Initial commit

.gitignore

@@ -0,0 +1,60 @@
+*~
+*.cxx
+*.o
+*.a
+*moc_*
+*_automoc*
+*qrc_*
+*qm
+*.tar.gz
+*.zip
+*.exe
+*.json
+log.txt
+manifest*
+.excludes
+*__*
+Makefile
+bin/
+dementia.pro.user
+dementia.pro.user.2.1pre1
+engine.txt
+header.txt
+src/editor/Makefile
+src/editor/editor
+src/game/Makefile
+src/game/Makefile.Debug
+src/game/Makefile.Release
+src/game/MiniCore/Core/genincludeheaders.sh
+*.cbp
+dementia-editor
+dementia-game
+test/
+unittests/
+CTestTestfile.cmake
+cmake_install.cmake
+src/editor/CTestTestfile.cmake
+src/editor/cmake_install.cmake
+src/game/CTestTestfile.cmake
+src/game/MiniCore/CTestTestfile.cmake
+src/game/MiniCore/UnitTests/CTestTestfile.cmake
+src/game/MiniCore/UnitTests/MCForceRegistryTest/CTestTestfile.cmake
+src/game/MiniCore/UnitTests/MCForceRegistryTest/cmake_install.cmake
+src/game/MiniCore/UnitTests/MCObjectTest/CTestTestfile.cmake
+src/game/MiniCore/UnitTests/MCObjectTest/cmake_install.cmake
+src/game/MiniCore/UnitTests/cmake_install.cmake
+src/game/MiniCore/cmake_install.cmake
+src/game/cmake_install.cmake
+src/game/renderer.cpp.autosave
+CPackConfig.cmake
+CPackSourceConfig.cmake
+data/translations/
+dementia-1.4.6.zip
+release/
+src/game/dementia-game_fi.qm
+src/game/dementia-game_it.qm
+src/game/trackobjectfactory.cpp.orig
+*_plugin_import*
+*.Debug
+*.Release
+CMakeLists.txt.user

AUTHORS

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+People who have contributed to Dementia
+=======================================
+
+Programming:
+* Jussi Lind <jussi.lind@iki.fi>
+
+Graphics:
+* Jussi Lind
+
+Translations:
+* Jussi Lind (fi)
+

CHANGELOG

@@ -0,0 +1 @@
+

CMakeLists.txt

@@ -0,0 +1,72 @@
+project(Dementia)
+
+cmake_minimum_required(VERSION 2.8.12)
+cmake_policy(VERSION 2.8.12)
+
+if(POLICY CMP0005)
+    cmake_policy(SET CMP0005 NEW)
+endif()
+
+if(POLICY CMP0020)
+    cmake_policy(SET CMP0020 NEW)
+endif()
+
+if(POLICY CMP0043)
+    cmake_policy(SET CMP0043 NEW)
+endif()
+
+# Global game version
+set(VERSION_MAJOR "0")
+set(VERSION_MINOR "0")
+set(VERSION_PATCH "0")
+set(VERSION "${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
+
+option(ReleaseBuild "This should be used when creating DEB and RPM packages." OFF)
+
+option(DATA_PATH "Optional DATA_PATH for Linux release build." "")
+
+option(BIN_PATH "Optional BIN_PATH for Linux release build." "")
+
+option(DOC_PATH "Optional DOC_PATH for Linux release build." "")
+
+# Default to release C++ flags if CMAKE_BUILD_TYPE not set
+if(NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE Release CACHE STRING
+        "Choose the type of build, options are: None Debug Release RelWithDebInfo
+MinSizeRel." FORCE)
+endif()
+
+if(UNIX)
+    include("InstallLinux.cmake")
+elseif(WIN32)
+    include("InstallWindows.cmake")
+endif()
+
+if(CMAKE_COMPILER_IS_GNUCXX OR MINGW OR ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
+    add_compile_options("$<$<CONFIG:RELEASE>:-W;-Wall;-O3;-pedantic>")
+    add_compile_options("$<$<CONFIG:DEBUG>:-W;-Wall;-O0;-pedantic>")
+elseif(MSVC)
+    add_definitions(-DNOMINMAX)
+endif()
+
+set(BINARY_NAME "dementia")
+
+add_definitions(-DVERSION="${VERSION}")
+
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+set(QT_MIN_VER 5.2.1)
+find_package(Qt5Core ${QT_MIN_VER} REQUIRED)
+find_package(Qt5Xml ${QT_MIN_VER} REQUIRED)
+find_package(Qt5Widgets ${QT_MIN_VER} REQUIRED)
+find_package(Qt5LinguistTools ${QT_MIN_VER} REQUIRED)
+find_package(Qt5Test ${QT_MIN_VER} REQUIRED)
+
+# Install paths depend on the build type and target platform
+resolve_install_paths()
+
+add_subdirectory(src/editor)
+
+# Enable CMake's unit test framework
+enable_testing()
+add_subdirectory(src/UnitTests)

CONTRIBUTING

@@ -0,0 +1 @@
+

COPYING

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
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+
+  If you convey a covered work, knowingly relying on a patent license,
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+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
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+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
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+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
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+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
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+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

INSTALL

@@ -0,0 +1,131 @@
+Build & install instructions
+============================
+
+These are build & install instructions for Dementia.
+
+Build systems
+=============
+
+The "official" build system for Linux is CMake.
+
+There are also qmake project files for easier cross-compilation for Windows and Android. Qt5 is required.
+
+I used to make Windows releases also with CMake, but in the future I'll cross-compile for Windows on Ubuntu host by using MXE and qmake. MXE is a cool cross-compilation environment
+and all libraries are linked statically by default (no DLLs needed).
+
+Toolchains
+==========
+
+GCC/MinGW and Clang are the only "officially" supported toolchains on Linux.
+
+Windows builds are done on Ubuntu with MXE (web: mxe.cc). The build script
+also generates automatically an NSIS Windows installer and a ZIP-archive.
+See scripts/mxeWindowsBuild.sh.
+
+Building the project with Microsoft Visual C++ 2013 also works, but no automatic
+packaging/deployment currently exist. The runtime files (data/, Qt, OpenAL..) must be
+manually copied in place. See more detailed instructions below.
+
+Build dependencies
+==================
+
+Currently the build depends on Qt only.
+
+Dementia also exploits some features of the C++11 standard,
+so a somewhat compliant compiler is required (GCC >= 4.7).
+
+Building in the command line on Linux (tested on Ubuntu 16.04)
+==============================================================
+
+Development build (the app can be run without installing anything):
+-------------------------------------------------------------------
+
+1) Install Qt5 development files (qt5-default on Ubuntu).
+2) Install CMake (cmake on Debian/Ubuntu).
+3) Go to the source directory and run:
+
+$ mkdir build
+$ cd build
+$ cmake ..
+
+This runs CMake that generates the makefiles.
+
+You can also use Qt Creator to open the top-level CMakeLists.txt and build inside Qt Creator.
+There's also a convenience configure script which is just a wrapper for cmake.
+
+Anyway, if everything went ok with cmake, run:
+
+$ make
+
+This will build the application.
+
+Run Dementia:
+
+$ ./dementia
+
+Run unit tests:
+
+$ ctest
+
+Release build (in this example Dementia installs under /usr):
+--------------------------------------------------------
+
+$ mkdir build
+$ cd build
+$ cmake .. -DReleaseBuild=1 -DCMAKE_INSTALL_PREFIX=/usr
+
+This runs CMake that generates the makefiles.
+If everything went ok, run:
+
+$ make
+
+This will build the application.
+
+Install the binaries and data files:
+
+$ sudo make install
+
+This installs also the desktop files so Dementia should appear in your application menu.
+
+Cross-compiling for Windows with MXE on Linux (tested on Ubuntu 16.04)
+======================================================================
+
+1) Install MXE (http://mxe.cc)
+2) Install Qt5 with MXE
+3) Run <Your MXE installation dir>/usr/i686-pc-mingw32/qt5/bin/qmake dementia.pro
+4) make
+
+There's also a script to build the application with a Windows installer:
+1) export DEMENTIA_RELEASE_VERSION=x.y.z (use the latest version)
+2) source ./scripts/mxeEnv.sh (assumes that MXE is installed in /opt/mxe)
+3) ./scripts/mxeWindowsBuild.sh
+
+The script checks that needed binaries are found.
+
+CPack
+=====
+
+Dementia has a support for CPack. It's not complete, but can be used to generate
+some generic binary packages.
+
+After a successful build run CPack:
+
+$ cpack
+
+This will generate .tar.gz and .sh binary packages on Linux.
+
+For packagers
+=============
+
+The release build should be used when packaging (give
+-DReleaseBuild=1 to cmake).
+
+CMAKE_INSTALL_PREFIX usually defaults to /usr/local and
+can be changed by giving, for example, -DCMAKE_INSTALL_PREFIX=/usr
+to cmake (or to the configure script).
+
+There's an example Debian packaging in packaging/debian/.
+
+
+-- Jussi Lind <jussi.lind@iki.fi>
+

InstallLinux.cmake

@@ -0,0 +1,82 @@
+# **** Resolve install and data paths ****
+function(resolve_install_paths)
+
+    # Set default install paths for release builds.
+    set(DEFAULT_DATA_PATH_BASE share/applications/dementia)
+    if(NOT DATA_PATH)
+        set(DATA_PATH ${CMAKE_INSTALL_PREFIX}/${DEFAULT_DATA_PATH_BASE}/data)
+    endif()
+
+    if(NOT BIN_PATH)
+        set(BIN_PATH bin)
+    endif()
+
+    if(NOT DOC_PATH)
+        set(DOC_PATH ${CMAKE_INSTALL_PREFIX}/${DEFAULT_DATA_PATH_BASE}/)
+    endif()
+
+    if(ReleaseBuild)
+        message(STATUS "Linux release build with system install targets.")
+    else()
+        message(STATUS "Linux development build with local install targets.")
+        set(BIN_PATH .)
+        set(DATA_PATH ./data)
+        set(DOC_PATH .)
+
+        # Add target to copy runtime files to the binary dir.
+        add_custom_target(runtime ALL
+            COMMAND cmake -E copy_directory ${CMAKE_SOURCE_DIR}/data ${CMAKE_BINARY_DIR}/data
+            COMMAND cmake -E copy ${CMAKE_SOURCE_DIR}/AUTHORS ${CMAKE_BINARY_DIR}/AUTHORS
+            COMMAND cmake -E copy ${CMAKE_SOURCE_DIR}/CHANGELOG ${CMAKE_BINARY_DIR}/CHANGELOG
+            COMMAND cmake -E copy ${CMAKE_SOURCE_DIR}/COPYING ${CMAKE_BINARY_DIR}/COPYING
+            COMMAND cmake -E copy ${CMAKE_SOURCE_DIR}/README.md ${CMAKE_BINARY_DIR}/README.md
+            DEPENDS ${GAME_BINARY_NAME} ${QM_FILES})
+    endif()
+
+    message(STATUS "BIN_PATH: " ${BIN_PATH})
+    message(STATUS "DATA_PATH: " ${DATA_PATH})
+    message(STATUS "DOC_PATH:" ${DOC_PATH})
+
+    # This is the main data path
+    add_definitions(-DDATA_PATH="${DATA_PATH}")
+
+    setup_install_targets(${BIN_PATH} ${DATA_PATH} ${DOC_PATH})
+
+endfunction()
+
+# **** Install targets for Linux ****
+function(setup_install_targets BIN_PATH DATA_PATH DOC_PATH)
+
+    # Install binaries and data
+    install(PROGRAMS ${CMAKE_BINARY_DIR}/${BINARY_NAME} DESTINATION ${BIN_PATH})
+    install(FILES AUTHORS CHANGELOG COPYING README.md DESTINATION ${DOC_PATH})
+    install(DIRECTORY ${CMAKE_BINARY_DIR}/data/translations DESTINATION ${DATA_PATH} FILES_MATCHING PATTERN "*.qm")
+
+    if(ReleaseBuild)
+        # Install .desktop files
+        install(FILES ${CMAKE_BINARY_DIR}/dementia.desktop DESTINATION share/applications)
+
+        # Install app store meta data
+        install(FILES src/dementia.appdata.xml DESTINATION share/metainfo)
+
+        # Install icons
+        install(FILES data/icons/dementia.png DESTINATION share/pixmaps)
+        install(FILES data/icons/dementia.png DESTINATION share/icons/hicolor/64x64/apps)
+    endif()
+
+    # CPack config to create e.g. self-extracting packages
+    set(CPACK_BINARY_STGZ ON)
+    set(CPACK_BINARY_TGZ ON)
+    set(CPACK_BINARY_TZ OFF)
+
+    set(QT_VER_STR "qt5")
+
+    set(CPACK_PACKAGE_FILE_NAME "dementia-${VERSION}-linux-${CMAKE_HOST_SYSTEM_PROCESSOR}-${QT_VER_STR}")
+    set(CPACK_RESOURCE_FILE_LICENSE ${CMAKE_SOURCE_DIR}/COPYING)
+    set(CPACK_RESOURCE_FILE_README ${CMAKE_SOURCE_DIR}/README.md)
+
+    if(NOT ReleaseBuild)
+        include(CPack)
+    endif()
+
+endfunction()

InstallWindows.cmake

@@ -0,0 +1,43 @@
+# **** Resolve install and data paths ****
+function(resolve_install_paths)
+
+    message(STATUS "Windows build.")
+
+    set(BIN_PATH .)
+    set(DATA_PATH ./data)
+    set(DOC_PATH .)
+
+    # This is the main data path given to the game and editor binaries.
+    add_definitions(-DDATA_PATH="${DATA_PATH}")
+
+    # Add target to copy runtime files to the binary dir.
+    add_custom_target(runtimeData ALL
+        COMMAND cmake -E copy_directory ${CMAKE_SOURCE_DIR}/data ${CMAKE_BINARY_DIR}/data
+        COMMAND cmake -E copy ${CMAKE_SOURCE_DIR}/AUTHORS ${CMAKE_BINARY_DIR}/AUTHORS
+        COMMAND cmake -E copy ${CMAKE_SOURCE_DIR}/CHANGELOG ${CMAKE_BINARY_DIR}/CHANGELOG
+        COMMAND cmake -E copy ${CMAKE_SOURCE_DIR}/COPYING ${CMAKE_BINARY_DIR}/COPYING
+        COMMAND cmake -E copy ${CMAKE_SOURCE_DIR}/README.md ${CMAKE_BINARY_DIR}/README.md
+        DEPENDS ${GAME_BINARY_NAME} ${QM_FILES})
+
+    setup_install_targets(${BIN_PATH} ${DATA_PATH} ${DOC_PATH})
+
+endfunction()
+
+# **** Instal targets for Windows ****
+function(setup_install_targets BIN_PATH DATA_PATH DOC_PATH)
+
+    # Install binaries and game data
+    install(PROGRAMS ${CMAKE_BINARY_DIR}/${GAME_BINARY_NAME}.exe DESTINATION ${BIN_PATH})
+    install(PROGRAMS ${CMAKE_BINARY_DIR}/${EDITOR_BINARY_NAME}.exe DESTINATION ${BIN_PATH})
+    install(FILES data/editorModels.conf DESTINATION ${DATA_PATH})
+    install(FILES data/meshes.conf DESTINATION ${DATA_PATH})
+    install(FILES data/surfaces.conf DESTINATION ${DATA_PATH})
+    install(FILES AUTHORS CHANGELOG COPYING README.md DESTINATION ${DOC_PATH})
+    install(DIRECTORY data/images DESTINATION ${DATA_PATH} FILES_MATCHING PATTERN "*.jpg")
+    install(DIRECTORY data/images DESTINATION ${DATA_PATH} FILES_MATCHING PATTERN "*.png")
+    install(DIRECTORY data/levels DESTINATION ${DATA_PATH} FILES_MATCHING PATTERN "*.trk")
+    install(DIRECTORY data/models DESTINATION ${DATA_PATH} FILES_MATCHING PATTERN "*.obj")
+    install(DIRECTORY data/translations DESTINATION ${DATA_PATH} FILES_MATCHING PATTERN "*.qm")
+
+endfunction()
+

README.md

@@ -0,0 +1,21 @@
+## Dementia
+
+Dementia is an application for creating mind maps.
+
+It's currently under development and CANNOT BE USED FOR ANYTHING!
+
+## License
+
+Dementia's source code is licensed under GNU GPLv3. 
+See COPYING for the complete license text.
+
+All image files, except where otherwise noted, are licensed under
+CC BY-SA 3.0: http://creativecommons.org/licenses/by-sa/3.0/
+
+## Building the project
+
+Please refer to the INSTALL document for build/install instructions if you're
+going to build Dementia from sources.
+
+-- Jussi Lind <jussi.lind@iki.fi>
+

RELEASES

@@ -0,0 +1 @@
+

configure

@@ -0,0 +1,3 @@
+#!/bin/sh
+rm -f CMakeCache.txt
+cmake . $@ && echo "Configuring compeleted. Now run \"make\"."

data/icons/WindowsDementia.rc

@@ -0,0 +1 @@
+IDI_ICON1 ICON DISCARDABLE "Dementia.ico"

data/icons/icons.qrc

@@ -0,0 +1,5 @@
+<RCC>
+    <qresource prefix="/">
+        <file>dementia.png</file>
+    </qresource>
+</RCC>

data/images/images.qrc

@@ -0,0 +1,6 @@
+<RCC>
+    <qresource prefix="/">
+        <file>about.png</file>
+        <file>add.png</file>
+    </qresource>
+</RCC>

dementia.pro

@@ -0,0 +1,8 @@
+# Top-level Qt project file
+
+TEMPLATE = subdirs
+SUBDIRS += src/editor
+
+data.path = $$OUT_PWD/
+data.files = AUTHORS CHANGELOG COPYING README
+

packaging/README

@@ -0,0 +1,8 @@
+README
+======
+
+debian  : Example packaging for Ubuntu/Debian.
+windows : Packaging script for NSIS.
+
+-- Jussi Lind <jussi.lind@iki.fi>
+

packaging/debian/changelog

@@ -0,0 +1,2 @@
+
+

packaging/debian/compat

@@ -0,0 +1 @@
+8

packaging/debian/control

@@ -0,0 +1,14 @@
+Source: dementia
+Section: education
+Priority: extra
+Maintainer: Jussi Lind <jussi.lind@iki.fi>
+Build-Depends: debhelper (>= 8.0.0), cmake (>= 2.8.0), pkg-config, qt5-default (>= 5.2.0), qttools5-dev (>= 5.2.0), qttools5-dev-tools (>= 5.2.0)
+Standards-Version: 3.9.2
+Homepage: http://juzzlin.github.io/Dementia/index.html
+Vcs-Git: git@github.com:juzzlin/Dementia.git
+
+Package: dementia
+Architecture: any
+Depends: ${shlibs:Depends}, ${misc:Depends}
+Description: An application for creating and managing mind maps
+

packaging/debian/copyright

@@ -0,0 +1,42 @@
+Format: http://dep.debian.net/deps/dep5
+Upstream-Name: dementia
+Source: https://sourceforge.net/projects/dementia/
+
+Files: *
+Copyright: 2018 Jussi Lind <jussi.lind@iki.fi>
+License: GPL-3.0+
+
+Files: data/images/*
+Copyright: 2018 Jussi Lind <jussi.lind@iki.fi>
+License: CC BY-SA 3.0
+
+Files: data/icons/*
+Copyright: 2018 Jussi Lind <jussi.lind@iki.fi>
+License: CC BY-SA 3.0
+
+Files: debian/*
+Copyright: 2018 Jussi Lind <jussi.lind@iki.fi>
+License: GPL-3.0+
+
+License: GPL-3.0+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+ .
+ This package is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+ .
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+ .
+ On Debian systems, the complete text of the GNU General
+ Public License version 3 can be found in "/usr/share/common-licenses/GPL-3".
+
+License: CC BY-SA 3.0
+ http://creativecommons.org/licenses/by-sa/3.0/
+
+# Please also look if there are files or directories which have a
+# different copyright/license attached and list them here.

packaging/debian/rules

@@ -0,0 +1,78 @@
+#!/usr/bin/make -f
+# Sample debian/rules that uses debhelper.
+# This file is public domain software, originally written by Joey Hess.
+#
+# This version is for packages that are architecture dependent.
+
+# Uncomment this to turn on verbose mode.
+#export DH_VERBOSE=1
+
+build: build-stamp
+build-stamp:
+	dh_testdir
+
+	# Add here commands to compile the package.
+	cmake . -DReleaseBuild=1 -DUSC=1 -DCMAKE_INSTALL_PREFIX=/usr && $(MAKE) -j$(shell cat /proc/cpuinfo | grep processor | wc -l)
+	touch build-stamp
+
+clean:
+	dh_testdir
+	dh_testroot
+	rm -f build-stamp
+
+	# Add here commands to clean up after the build process.
+	dh_clean
+	$(test -r Makefile && $MAKE clean)
+
+install: build
+	dh_testdir
+	dh_testroot
+	dh_prep
+	dh_installdirs
+
+	# Add here commands to install the package into debian/<packagename>
+	DESTDIR=`pwd`/debian/`dh_listpackages` $(MAKE) install
+
+# Build architecture-independent files here.
+binary-indep: build install
+# We have nothing to do by default.
+
+# Build architecture-dependent files here.
+binary-arch: build install
+	dh_testdir
+	dh_testroot
+	dh_installchangelogs
+	dh_installdocs
+	dh_installexamples
+#	dh_install
+#	dh_installmenu
+#	dh_installdebconf
+#	dh_installlogrotate
+#	dh_installemacsen
+#	dh_installcatalogs
+#	dh_installpam
+#	dh_installmime
+#	dh_installinit
+#	dh_installcron
+#	dh_installinfo
+#	dh_installwm
+#	dh_installudev
+#	dh_lintian
+#	dh_bugfiles
+#	dh_undocumented
+#	dh_installman
+	dh_link
+	dh_strip
+	dh_compress
+	dh_fixperms
+#	dh_perl
+#	dh_makeshlibs
+	dh_installdeb
+	dh_shlibdeps
+	dh_gencontrol
+	dh_md5sums
+	dh_builddeb
+
+binary: binary-indep binary-arch
+.PHONY: build clean binary-indep binary-arch binary install
+

packaging/windows/dementia.nsi

@@ -0,0 +1,148 @@
+; Script for NSIS packaging.
+
+!define PRODUCTNAME            "Dementia"
+!define APPNAME                "Dementia"
+!define COMPANYNAME            "Jussi Lind"
+!define DESCRIPTION            "An application for mind map creation and management."
+!define VERSIONMAJOR           0
+!define VERSIONMINOR           0
+!define VERSIONBUILD           0
+!define HELPURL                "http://juzzlin.github.io/Dementia/"
+!define UPDATEURL              "https://github.com/juzzlin/Dementia/releases"
+!define ABOUTURL               "http://juzzlin.github.io/Dementia/"
+
+!define MUI_FILE               ""
+!define MUI_BRANDINGTEXT       ${PRODUCTNAME}
+;!define MUI_HEADERIMAGE
+;!define MUI_HEADERIMAGE_BITMAP "${NSISDIR}\Contrib\Graphics\Header\orange.bmp"
+!define MUI_ICON               "data\icons\Dementia.ico"
+!define MUI_UNICON             "data\icons\Dementia.ico"
+!define MUI_SPECIALBITMAP      "data\icons\Dementia.ico"
+
+!define MUI_WELCOMEPAGE  
+!define MUI_LICENSEPAGE
+!define MUI_DIRECTORYPAGE
+!define MUI_ABORTWARNING
+!define MUI_UNINSTALLER
+!define MUI_UNCONFIRMPAGE
+!define MUI_FINISHPAGE  
+
+CRCCheck On
+
+!include MUI2.nsh
+!include LogicLib.nsh
+  
+RequestExecutionLevel admin
+ 
+InstallDir "$PROGRAMFILES\${PRODUCTNAME}"
+ 
+Name "${PRODUCTNAME}"
+Icon "data\icons\Dementia.ico"
+OutFile "dementia-${VERSIONMAJOR}.${VERSIONMINOR}.${VERSIONBUILD}-windows-x86-qt5_setup.exe"
+
+!insertmacro MUI_LANGUAGE "English"
+ 
+LicenseData "COPYING" 
+
+Page license
+Page directory
+Page instfiles
+
+!macro VerifyUserIsAdmin
+UserInfo::GetAccountType
+pop $0
+${If} $0 != "admin" ;Require admin rights on NT4+
+    messageBox mb_iconstop "Administrator rights required!"
+    setErrorLevel 740 ;ERROR_ELEVATION_REQUIRED
+    quit
+${EndIf}
+!macroend
+
+Function .onInit
+	SetShellVarContext all
+	!insertmacro VerifyUserIsAdmin
+FunctionEnd
+ 
+Section "install"
+	SetOutPath $INSTDIR
+
+	File dementia.exe
+	File CHANGELOG
+	File COPYING
+	File AUTHORS
+	File README.md
+	
+	WriteUninstaller "$INSTDIR\uninstall.exe"
+ 
+	CreateDirectory "$SMPROGRAMS\${PRODUCTNAME}"
+	CreateShortCut "$SMPROGRAMS\${PRODUCTNAME}\${APPNAME}.lnk" \
+	    "$INSTDIR\dementia.exe" "" "$INSTDIR\data\icons\Dementia.ico"
+	CreateShortCut "$SMPROGRAMS\${PRODUCTNAME}\Uninstall.lnk" "$INSTDIR\uninstall.exe" "" ""
+ 
+	CreateShortCut "$DESKTOP\${APPNAME}.lnk" "$INSTDIR\dementia.exe" "" "$INSTDIR\data\icons\Dementia.ico"
+ 
+	# Registry information for add/remove programs
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} \
+	    ${PRODUCTNAME}" "DisplayName" "${PRODUCTNAME} - ${DESCRIPTION}"
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} \
+	    ${PRODUCTNAME}" "UninstallString" "$\"$INSTDIR\uninstall.exe$\""
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} \
+	    ${PRODUCTNAME}" "QuietUninstallString" "$\"$INSTDIR\uninstall.exe$\" /S"
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} \
+	    ${PRODUCTNAME}" "InstallLocation" "$\"$INSTDIR$\""
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} \
+	    ${PRODUCTNAME}" "DisplayIcon" "$\"$INSTDIR\logo.ico$\""
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} \
+	    ${PRODUCTNAME}" "Publisher" "$\"${COMPANYNAME}$\""
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} \
+	    ${PRODUCTNAME}" "HelpLink" "$\"${HELPURL}$\""
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} \
+	    ${PRODUCTNAME}" "URLUpdateInfo" "$\"${UPDATEURL}$\""
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} \
+	    ${PRODUCTNAME}" "URLInfoAbout" "$\"${ABOUTURL}$\""
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} \
+	    ${PRODUCTNAME}" "DisplayVersion" "$\"${VERSIONMAJOR}.${VERSIONMINOR}.${VERSIONBUILD}$\""
+	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} \
+	    ${PRODUCTNAME}" "VersionMajor" ${VERSIONMAJOR}
+	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} \
+	    ${PRODUCTNAME}" "VersionMinor" ${VERSIONMINOR}
+
+	# There is no option for modifying or repairing the install
+	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} ${PRODUCTNAME}" "NoModify" 1
+	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} ${PRODUCTNAME}" "NoRepair" 1
+
+SectionEnd
+ 
+# Uninstaller
+ 
+Function un.onInit
+
+	SetShellVarContext all
+ 
+	#Verify the uninstaller - last chance to back out
+	MessageBox MB_OKCANCEL "Permanently remove ${PRODUCTNAME}?" IDOK next
+		Abort
+	next:
+	!insertmacro VerifyUserIsAdmin
+	
+FunctionEnd
+ 
+Section "uninstall"
+ 
+	RmDir /r "$SMPROGRAMS\${PRODUCTNAME}"
+	 
+	Delete "$DESKTOP\${APPNAME}.lnk"
+	 
+	Delete   $INSTDIR\dementia.exe
+	Delete   $INSTDIR\CHANGELOG
+	Delete   $INSTDIR\COPYING
+	Delete   $INSTDIR\AUTHORS
+	Delete   $INSTDIR\README.md
+ 
+	Delete   $INSTDIR\uninstall.exe
+ 
+	RmDir $INSTDIR
+ 
+	DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${COMPANYNAME} ${PRODUCTNAME}"
+	
+SectionEnd

scripts/archive.sh

@@ -0,0 +1,4 @@
+VERSION=$(git log | grep -m 1 "^\s*[0-9]\.[0-9]*\.[0-9]*" | awk '{print $1}')
+git archive --format=tar --prefix=dementia-$VERSION/ HEAD | gzip > dementia-$VERSION.tar.gz
+git archive --format=zip --prefix=dementia-$VERSION/ HEAD > dementia-$VERSION.zip
+

scripts/ci/jenkins-cmake-debug.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+# Simple build script that can be run from Jenkins
+
+(mkdir -p build && cd build && cmake .. -DCMAKE_BUILD_TYPE=Debug && make) || exit 1
+

scripts/ci/jenkins-cmake-linux-install.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+# Simple build script that can be run from Jenkins
+
+(mkdir -p build && cd build && cmake .. -DCMAKE_BUILD_TYPE=Release -DReleaseBuild=ON && make) || exit 1
+

scripts/ci/jenkins-cmake.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+# Simple build script that can be run from Jenkins
+
+(mkdir -p build && cd build && cmake .. && make) || exit 1
+

scripts/ci/jenkins-qmake.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+# Simple build script that can be run from Jenkins
+
+(mkdir -p build && cd build && qmake .. && make) || exit 1
+

scripts/ci/jenkins-tests.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+# Simple build script that can be run from Jenkins
+
+(mkdir -p build && cd build && cmake .. && make && ctest) || exit 1
+

scripts/genericLinuxBuildQt5.sh

@@ -0,0 +1,88 @@
+#!/bin/bash
+
+# Assumes, that you have installed (static) qt5 to ~/qt5.
+
+QT5_QMAKE=~/qt5/bin/qmake
+if ! which $QT5_QMAKE; then
+    echo "$QT5_QMAKE not found."
+    exit 1
+fi
+
+TAR=tar
+if ! which $TAR; then
+    echo "$TAR not found."
+    exit 1
+fi
+
+LRELEASE=lrelease
+if ! which $LRELEASE; then
+    echo "$LRELEASE not found."
+    exit 1
+fi
+
+NUM_CPUS=$(cat /proc/cpuinfo | grep processor | wc -l)
+
+# Package naming
+
+NAME=dementia
+VERSION=${DUSTRAC_RELEASE_VERSION?"DUSTRAC_RELEASE_VERSION_NOT_SET"}
+ARCH=linux-x86_64
+QT=qt5
+
+# Build
+
+$QT5_QMAKE && make -j$NUM_CPUS || exit 1
+
+# Update translations
+
+$LRELEASE ./src/game/game.pro && $LRELEASE ./src/editor/editor.pro || exit 1
+
+# Install to packaging dir
+
+PACKAGE_PATH=$NAME-$VERSION-$ARCH-$QT
+rm -rf $PACKAGE_PATH
+mkdir $PACKAGE_PATH
+
+mkdir -p data/translations
+cp -v ./src/game/translations/*.qm data/translations   &&
+cp -v ./src/editor/translations/*.qm data/translations &&
+cp -v ./src/game/dementia-game $PACKAGE_PATH            &&
+cp -v ./src/editor/dementia-editor $PACKAGE_PATH        &&
+cp -rv data $PACKAGE_PATH                              || exit 1
+
+TEXT_FILES="AUTHORS CHANGELOG COPYING README.md"
+cp -v $TEXT_FILES $PACKAGE_PATH || exit 1
+
+# Copy some needed dependecies
+
+DEPS="ogg vorbis openal"
+for lib in $DEPS; do
+cp -v $(ldd $PACKAGE_PATH/dementia-game | grep $lib | awk '{print $3}') $PACKAGE_PATH
+done
+
+# Create start script for the game
+
+cp $PACKAGE_PATH/dementia-game $PACKAGE_PATH/g.bin
+SCRIPT=$PACKAGE_PATH/dementia-game
+echo "#!/bin/sh" > $SCRIPT
+echo "LD_LIBRARY_PATH=. ./g.bin" >> $SCRIPT
+chmod 755 $SCRIPT
+
+# Create start script for the editor
+
+cp $PACKAGE_PATH/dementia-editor $PACKAGE_PATH/e.bin
+SCRIPT=$PACKAGE_PATH/dementia-editor
+echo "#!/bin/sh" > $SCRIPT
+echo "LD_LIBRARY_PATH=. ./e.bin" >> $SCRIPT
+chmod 755 $SCRIPT
+
+# Create tgz archive
+
+TGZ_ARCHIVE=$PACKAGE_PATH.tar.gz
+rm -f $TGZ_ARCHIVE
+$TAR czvf $TGZ_ARCHIVE $PACKAGE_PATH
+
+ls -ltr
+
+echo "Done."
+

scripts/license.py

@@ -0,0 +1,73 @@
+#!/usr/bin/python
+
+# This file is part of Dust Racing (DustRAC).
+# Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+# 
+# DustRAC is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+# DustRAC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with DustRAC. If not, see <http://www.gnu.org/licenses/>.
+# 
+# Usage:
+#
+# This script replaces the license plate of the given file(s) with
+# the given new license plate. license lines MUST begin with "//".
+#
+# e.g. python license.py gpl_header.txt `find . -name "*.hh"`
+
+import sys
+
+def main(argv):
+
+    if len(argv) < 3:
+        print("Usage: python license.py [licenseHeaderFile] [sourceFiles]")
+        return 1
+
+    # Read the new license
+    fName = argv[1]
+    print("Opening " + fName + " for read..")
+    f = open(fName, 'r')
+    licenseLines = f.readlines()
+    f.close()
+
+    for j in xrange(2, len(argv)):
+        fName = argv[j]
+
+        # Read the original file
+        print("Opening " + fName + " for read..")
+        f = open(fName, 'r')
+        origLines = f.readlines()
+        f.close()
+
+        # Skip the current license plate
+        headerSkip = True
+        newLines   = []
+        for i in origLines:
+            if (i.find('//') == 0 or i.find('\n') == 0) and headerSkip:
+                pass
+            else:
+                headerSkip = False
+                newLines.append(i)
+
+        # Add the new license
+        newLines = licenseLines + newLines 
+
+        # Modify the source file
+        print("Opening " + fName + " for write..")
+        f = open(fName, 'w')    
+        f.writelines(newLines)
+        f.close()
+
+    print("Done.")
+    return 0
+
+if __name__ == '__main__':
+    main(sys.argv)
+

scripts/qt5StaticConfigure.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+#
+# This for configuring static build of Qt5 itself, not the game.
+#
+
+PREFIX='/home/juzzlin/qt5'
+./configure \
+            -opensource \
+            -confirm-license \
+            -force-pkg-config \
+            -fontconfig \
+            -release \
+            -static \
+            -prefix $PREFIX \
+            -no-icu \
+            -opengl desktop \
+            -no-glib \
+            -accessibility \
+            -nomake examples \
+            -nomake tests \
+            -qt-zlib \
+            -qt-libpng \
+            -qt-libjpeg \
+            -qt-sql-sqlite \
+            -qt-xcb \
+            -qt-pcre \
+            -pulseaudio \
+            -v
+

scripts/updatePPA.sh

@@ -0,0 +1,14 @@
+VERSION=${DUSTRAC_RELEASE_VERSION?"is not set."}
+
+# $VERSION-1 for xenial
+# $VERSION-2 for artful
+
+DEBIAN_VERSION=$VERSION-1
+rm -rf *${VERSION}*
+cp ../DustRacing2D/dementia-$VERSION.tar.gz .
+tar xzvf dementia-$VERSION.tar.gz
+mv dementia-$VERSION dementia-$DEBIAN_VERSION
+cd dementia-$DEBIAN_VERSION
+cp -rv packaging/debian .
+debuild -S -sa && cd .. && dput ppa:jussi-lind/dementia "dementia_${DEBIAN_VERSION}_source.changes"
+

scripts/updateTranslationFiles.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+LUPDATE=lupdate
+if ! which ${LUPDATE}; then
+    echo "${LUPDATE} not found."
+    exit 1
+fi
+
+for LANG in cs de fi fr it; do
+    ${LUPDATE} src/game/*.cpp src/game/menu/*.cpp -ts src/game/translations/dementia-game_${LANG}.ts
+    ${LUPDATE} src/editor/*.cpp -ts src/editor/translations/dementia-editor_${LANG}.ts
+done
+
+echo "Done."
+

src/UnitTests/CMakeLists.txt

@@ -0,0 +1,2 @@
+add_subdirectory(GraphTest)
+

src/UnitTests/GraphTest/CMakeLists.txt

@@ -0,0 +1,13 @@
+set(EDITOR_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../editor)
+include_directories(${EDITOR_DIR})
+
+set(NAME GraphTest)
+set(SRC ${NAME}.cpp ${EDITOR_DIR}/graph.cpp ${EDITOR_DIR}/nodebase.cpp)
+
+set(EXECUTABLE_OUTPUT_PATH ${CMAKE_SOURCE_DIR}/unittests)
+add_executable(${NAME} ${SRC} ${MOC_SRC})
+add_test(${NAME} ${CMAKE_SOURCE_DIR}/unittests/${NAME})
+
+qt5_use_modules(${NAME} Test)
+
+set_property(TARGET ${NAME} PROPERTY CXX_STANDARD 11)

src/UnitTests/GraphTest/GraphTest.cpp

@@ -0,0 +1,78 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "GraphTest.hpp"
+
+#include "../editor/graph.hpp"
+#include "../editor/nodebase.hpp"
+
+GraphTest::GraphTest()
+{
+}
+
+void GraphTest::testAddNode()
+{
+    Graph dut;
+    NodeBasePtr node(new NodeBase);
+
+    QVERIFY(node->index() == -1);
+
+    dut.addNode(node);
+
+    QVERIFY(dut.numNodes() == 1);
+    QVERIFY(node->index() == 0);
+}
+
+void GraphTest::testAddTwoNodes()
+{
+    Graph dut;
+    NodeBasePtr node0(new NodeBase);
+    NodeBasePtr node1(new NodeBase);
+
+    dut.addNode(node0);
+
+    QVERIFY(dut.numNodes() == 1);
+
+    dut.addNode(node1);
+
+    QVERIFY(dut.numNodes() == 2);
+
+    QVERIFY(node0->index() == 0);
+    QVERIFY(node1->index() == 1);
+}
+
+void GraphTest::testGetNodeByIndex()
+{
+    Graph dut;
+    NodeBasePtr node(new NodeBase);
+
+    dut.addNode(node);
+
+    auto nodeByIndex = dut.get(0);
+    QVERIFY(node == nodeByIndex);
+}
+
+void GraphTest::testGetNodeByIndex_NotFound()
+{
+    Graph dut;
+    NodeBasePtr node(new NodeBase);
+
+    dut.addNode(node);
+
+    auto nodeByIndex = dut.get(1);
+    QVERIFY(nodeByIndex == nullptr);
+}
+
+QTEST_GUILESS_MAIN(GraphTest)

src/UnitTests/GraphTest/GraphTest.hpp

@@ -0,0 +1,35 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include <QTest>
+
+class GraphTest : public QObject
+{
+    Q_OBJECT
+
+public:
+
+    GraphTest();
+
+private slots:
+
+    void testAddNode();
+
+    void testAddTwoNodes();
+
+    void testGetNodeByIndex();
+
+    void testGetNodeByIndex_NotFound();
+};

src/dementia.appdata.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop">
+  <id>dementia.desktop</id>
+  <metadata_license>CC0-1.0</metadata_license>
+  <project_license>GPL-3.0 and CC BY-SA-3.0</project_license>
+  <name>Dementia</name>
+  <summary>An application for mind map creation and management.</summary>
+  <description>
+    <p>
+      Dementia is an application for mind map creation and management written in Qt (C++).
+    </p>
+  </description>
+  <screenshots>
+  </screenshots>
+  <url type="homepage">https://juzzlin.github.io/Dementia/</url>
+  <update_contact>jussi.lind@iki.fi</update_contact>
+</component>

src/dementia.desktop.in

@@ -0,0 +1,10 @@
+[Desktop Entry]
+Name=Dementia
+GenericName=Mind map application
+Comment=Mind map application
+Exec=dementia
+Icon=dementia
+Type=Application
+Categories=Education;
+StartupNotify=true
+

src/editor/CMakeLists.txt

@@ -0,0 +1,81 @@
+# Translation files in src/editor/translations (without .ts)
+#set(TS dementia_fi)
+set(TS_FILES)
+set(QM_FILES)
+foreach(TS_FILE ${TS})
+    list(APPEND TS_FILES ${CMAKE_SOURCE_DIR}/src/editor/translations/${TS_FILE}.ts)
+    list(APPEND QM_FILES ${CMAKE_BINARY_DIR}/src/editor/${TS_FILE}.qm)
+endforeach()
+# Set sources
+set(SRC
+    aboutdlg.cpp
+    application.cpp
+    config.cpp
+    draganddropstore.cpp
+    edge.cpp
+    graph.cpp
+    editordata.cpp
+    editorview.cpp
+    main.cpp
+    mainwindow.cpp
+    mediator.cpp
+    mindmapdata.cpp
+    mindmapdatabase.cpp
+    node.cpp
+    nodebase.cpp
+    nodehandle.cpp
+    undostack.cpp
+    contrib/mclogger.cc
+)
+
+set(RCS ${CMAKE_SOURCE_DIR}/data/images/images.qrc ${CMAKE_SOURCE_DIR}/data/icons/icons.qrc)
+
+include_directories(${CMAKE_CURRENT_SOURCE_DIR}/contrib)
+
+qt5_add_resources(RC_SRC ${RCS})
+qt5_add_translation(QM ${TS_FILES})
+qt5_wrap_ui(UI_HDRS ${UIS})
+
+# We need this to be able to include headers produced by uic in our code
+include_directories(${CMAKE_BINARY_DIR})
+
+# Resource compilation for MinGW
+if(MINGW)
+    add_custom_command(
+        OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/windowsrc.o
+        COMMAND
+            ${CMAKE_RC_COMPILER}
+            -I${CMAKE_SOURCE_DIR} -i${CMAKE_SOURCE_DIR}/data/icons/WindowsDementia.rc
+            -o ${CMAKE_CURRENT_BINARY_DIR}/windowsrc.o)
+    set(SRC ${SRC} ${CMAKE_CURRENT_BINARY_DIR}/windowsrc.o)
+endif()
+
+# Copy desktop file
+if(ReleaseBuild AND UNIX)
+    set(DesktopFileSourcePath)
+    if(USC)
+        set(DesktopFileSourcePath ${CMAKE_SOURCE_DIR}/src/dementia.desktop.opt.in)
+    else()
+        set(DesktopFileSourcePath ${CMAKE_SOURCE_DIR}/src/dementia.desktop.in)
+    endif()
+    add_custom_target(desktop-file ALL
+        COMMAND cmake -E copy ${DesktopFileSourcePath}
+            ${CMAKE_BINARY_DIR}/dementia.desktop
+    DEPENDS ${BINARY_NAME})
+endif()
+
+# Add the executable
+set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR})
+add_executable(${BINARY_NAME} WIN32 ${SRC} ${MOC_SRC} ${RC_SRC} ${UI_HDRS} ${QM})
+
+target_link_libraries(${BINARY_NAME} Qt5::Widgets Qt5::Xml)
+set_property(TARGET ${BINARY_NAME} PROPERTY CXX_STANDARD 11)
+
+foreach(TS_FILE ${TS})
+    # Make targets to copy generated qm files to data dir. This is done the hard
+    # way, because qt5_add_translation() generates the qm files to ${CMAKE_CURRENT_SOURCE_DIR}
+    add_custom_target(copy-translation-file-${TS_FILE} ALL
+        COMMAND cmake -E copy ${CMAKE_BINARY_DIR}/src/editor/${TS_FILE}.qm
+            ${CMAKE_BINARY_DIR}/data/translations/${TS_FILE}.qm
+        DEPENDS ${BINARY_NAME})
+endforeach()

src/editor/README

@@ -0,0 +1 @@
+These are common files shared between the editor and the game.

src/editor/aboutdlg.cpp

@@ -0,0 +1,59 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "aboutdlg.hpp"
+#include "config.hpp"
+
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QPixmap>
+#include <QPushButton>
+#include <QVBoxLayout>
+
+AboutDlg::AboutDlg(QWidget * parent)
+: QDialog(parent)
+{
+    setWindowTitle(tr("About ") + Config::Editor::EDITOR_NAME);
+    initWidgets();
+}
+
+void AboutDlg::initWidgets()
+{
+    QVBoxLayout * vLayout = new QVBoxLayout(this);
+    QLabel * pixmapLabel = new QLabel(this);
+
+    pixmapLabel->setPixmap(QPixmap(":/about.png").scaled(512, 512));
+    vLayout->addWidget(pixmapLabel);
+
+    QLabel * infoLabel = new QLabel(this);
+    infoLabel->setText(
+        QString("<h2>") + Config::Editor::EDITOR_NAME + " v" + Config::Editor::EDITOR_VERSION + "</h2>"
+        + "<p>" + Config::Editor::EDITOR_NAME + " is licenced under GNU GPLv3.</p>"
+        + "<p>" + Config::Common::COPYRIGHT + "</p>"
+        + "<a href='" + Config::Common::WEB_SITE_URL + "'>"
+        + Config::Common::WEB_SITE_URL + "</a>");
+
+    vLayout->addWidget(infoLabel);
+
+    QHBoxLayout * buttonLayout = new QHBoxLayout();
+    QPushButton * button = new QPushButton("&Ok", this);
+
+    connect(button, SIGNAL(clicked()), this, SLOT(accept()));
+
+    buttonLayout->addWidget(button);
+    buttonLayout->insertStretch(0);
+
+    vLayout->addLayout(buttonLayout);
+}

src/editor/aboutdlg.hpp

@@ -0,0 +1,36 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef ABOUTDLG_HPP
+#define ABOUTDLG_HPP
+
+#include <QDialog>
+
+//! The about dialog.
+class AboutDlg : public QDialog
+{
+    Q_OBJECT
+
+public:
+
+    //! Constructor.
+    explicit AboutDlg(QWidget * parent = 0);
+
+private:
+
+    void initWidgets();
+};
+
+#endif // ABOUTDLG_HPP

src/editor/application.cpp

@@ -0,0 +1,98 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "application.hpp"
+#include "mainwindow.hpp"
+
+#include "config.hpp"
+#include "userexception.hpp"
+
+#include <QLocale>
+#include <QSettings>
+
+#include <iostream>
+
+static void printHelp()
+{
+    std::cout << std::endl << "Dementia version " << VERSION << std::endl;
+    std::cout << Config::Common::COPYRIGHT.toStdString() << std::endl << std::endl;
+    std::cout << "Usage: dementia [options] [mindMapFile]" << std::endl << std::endl;
+    std::cout << "Options:" << std::endl;
+    std::cout << "--help        Show this help." << std::endl;
+    std::cout << "--lang [lang] Force language: fi." << std::endl;
+    std::cout << std::endl;
+}
+
+static void initTranslations(QTranslator & appTranslator, QGuiApplication & app, QString lang = "")
+{
+    if (lang == "")
+    {
+        lang = QLocale::system().name();
+    }
+
+    if (appTranslator.load(QString(DATA_PATH) + "/translations/dementia_" + lang))
+    {
+        app.installTranslator(&appTranslator);
+        std::cout << "Loaded translations for " << lang.toStdString() << std::endl;
+    }
+    else
+    {
+        std::cerr << "Failed to load translations for " << lang.toStdString() << std::endl;
+    }
+}
+
+void Application::parseArgs(int argc, char ** argv)
+{
+    QString lang = "";
+
+    const std::vector<QString> args(argv, argv + argc);
+    for (unsigned int i = 1; i < args.size(); i++)
+    {
+        if (args[i] == "-h" || args[i] == "--help")
+        {
+            printHelp();
+            throw UserException("Exit due to help.");
+        }
+        else if (args[i] == "--lang" && (i + i) < args.size())
+        {
+            lang = args[i + 1];
+        }
+        else
+        {
+            m_mindMapFile = args[i];
+        }
+    }
+
+    initTranslations(m_appTranslator, m_app, lang);
+}
+
+Application::Application(int & argc, char ** argv)
+    : m_app(argc, argv)
+{
+    parseArgs(argc, argv);
+
+    m_mainWindow = new MainWindow(m_mindMapFile);
+    m_mainWindow->show();
+}
+
+int Application::run()
+{
+    return m_app.exec();
+}
+
+Application::~Application()
+{
+    delete m_mainWindow;
+}

src/editor/application.hpp

@@ -0,0 +1,47 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef APPLICATION_HPP
+#define APPLICATION_HPP
+
+#include <QApplication>
+#include <QTranslator>
+
+class MainWindow;
+
+class Application
+{
+public:
+
+    Application(int & argc, char ** argv);
+
+    ~Application();
+
+    int run();
+
+private:
+
+    void parseArgs(int argc, char ** argv);
+
+    QApplication m_app;
+
+    QTranslator m_appTranslator;
+
+    QString m_mindMapFile;
+
+    MainWindow * m_mainWindow;
+};
+
+#endif // APPLICATION_HPP

src/editor/config.cpp

@@ -0,0 +1,33 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "config.hpp"
+
+namespace Config {
+
+const QString Common::dataPath                = DATA_PATH;
+
+const QString Common::COPYRIGHT               = "Copyright (c) 2018 Jussi Lind";
+const QString Common::QSETTINGS_COMPANY_NAME  = "dementia";
+const QString Common::WEB_SITE_URL            = "http://juzzlin.github.io/Dementia";
+
+const QString Editor::SELECT_ICON_PATH        = ":/cursor.png";
+const QString Editor::ERASE_ICON_PATH         = ":/cross.png";
+const QString Editor::CLEAR_ICON_PATH         = ":/clear.png";
+const QString Editor::EDITOR_NAME             = "Dementia";
+const QString Editor::EDITOR_VERSION          = VERSION;
+const QString Editor::QSETTINGS_SOFTWARE_NAME = "Dementia";
+
+} // Config

src/editor/config.hpp

@@ -0,0 +1,53 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include <QString>
+
+//! Config variables for editor and for the game.
+namespace Config
+{
+    class Common
+    {
+    public:
+        //! The base data path given by -DDATA_PATH.
+        static const QString dataPath;
+
+        static const QString COPYRIGHT;
+
+        //! "Company" name used in QSettings.
+        static const QString QSETTINGS_COMPANY_NAME;
+
+        static const QString WEB_SITE_URL;
+    };
+
+    class Editor
+    {
+    public:
+        static const QString EDITOR_NAME;
+
+        static const QString EDITOR_VERSION;
+
+        static const QString QSETTINGS_SOFTWARE_NAME;
+
+        static const QString SELECT_ICON_PATH;
+
+        static const QString ERASE_ICON_PATH;
+
+        static const QString CLEAR_ICON_PATH;
+    };
+
+} // Config
+
+

src/editor/contrib/mclogger.cc

@@ -0,0 +1,136 @@
+// This file belongs to the "MiniCore" game engine.
+// Copyright (C) 2012 Jussi Lind <jussi.lind@iki.fi>
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA  02110-1301, USA.
+//
+
+#define _CRT_SECURE_NO_WARNINGS
+
+#include "mclogger.hh"
+#include <ctime>
+
+#ifdef Q_OS_ANDROID
+#include <QDebug>
+#else
+#include <cstdio>
+#endif
+
+bool   MCLogger::m_echoMode = false;
+bool   MCLogger::m_dateTime = true;
+FILE * MCLogger::m_file     = nullptr;
+
+MCLogger::MCLogger()
+{
+}
+
+bool MCLogger::init(const char * fileName, bool append)
+{
+    MCLogger::m_file = nullptr;
+    if (fileName)
+    {
+        if (append)
+        {
+            MCLogger::m_file = fopen(fileName, "a+");
+        }
+        else
+        {
+            MCLogger::m_file = fopen(fileName, "w+");
+        }
+
+        if (!m_file)
+        {
+#ifdef Q_OS_ANDROID
+            qDebug() << "ERROR!!: Couldn't open '" << fileName << "' for write.";
+#else
+            fprintf(stderr, "ERROR!!: Couldn't open '%s' for write.\n", fileName);
+#endif
+            return false;
+        }
+    }
+
+    return true;
+}
+
+void MCLogger::enableEchoMode(bool enable)
+{
+    MCLogger::m_echoMode = enable;
+}
+
+void MCLogger::enableDateTimePrefix(bool enable)
+{
+    MCLogger::m_dateTime = enable;
+}
+
+void MCLogger::prefixDateTime()
+{
+    if (MCLogger::m_dateTime)
+    {
+        time_t rawTime;
+        time(&rawTime);
+        std::string timeStr(ctime(&rawTime));
+        timeStr.erase(timeStr.length() - 1);
+        m_oss << "[" << timeStr << "] ";
+    }
+}
+
+std::ostringstream & MCLogger::info()
+{
+    MCLogger::prefixDateTime();
+    m_oss << "I: ";
+    return m_oss;
+}
+
+std::ostringstream & MCLogger::warning()
+{
+    MCLogger::prefixDateTime();
+    m_oss << "W: ";
+    return m_oss;
+}
+
+std::ostringstream & MCLogger::error()
+{
+    MCLogger::prefixDateTime();
+    m_oss << "E: ";
+    return m_oss;
+}
+
+std::ostringstream & MCLogger::fatal()
+{
+    MCLogger::prefixDateTime();
+    m_oss << "F: ";
+    return m_oss;
+}
+
+MCLogger::~MCLogger()
+{
+    if (MCLogger::m_file)
+    {
+        fprintf(MCLogger::m_file, "%s", m_oss.str().c_str());
+        fprintf(MCLogger::m_file, "\n");
+        fflush(MCLogger::m_file);
+    }
+
+    if (MCLogger::m_echoMode)
+    {
+#ifdef Q_OS_ANDROID
+        qDebug() << m_oss.str().c_str();
+#else
+        fprintf(stdout, "%s", m_oss.str().c_str());
+        fprintf(stdout, "\n");
+        fflush(stdout);
+#endif
+    }
+}

src/editor/contrib/mclogger.hh

@@ -0,0 +1,90 @@
+// This file belongs to the "MiniCore" game engine.
+// Copyright (C) 2012 Jussi Lind <jussi.lind@iki.fi>
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA  02110-1301, USA.
+//
+
+#ifndef MCLOGGER_HH
+#define MCLOGGER_HH
+
+#include <cstdio>
+#include <sstream>
+
+/*! A logging class. A MCLogger instance flushes on destruction.
+ *
+ * Example initialization:
+ *
+ * MCLogger::init("myLog.txt");
+ * MCLogger::enableEchoMode(true);
+ *
+ * Example logging:
+ *
+ * MCLogger().info() << "Initialization finished.";
+ * MCLogger().error() << "Foo happened!";
+ */
+class MCLogger
+{
+public:
+
+    //! Constructor.
+    MCLogger();
+
+    //! Destructor.
+    ~MCLogger();
+
+    /*! Initialize the logger.
+     *  \param fileName Log to fileName. Can be nullptr.
+     *  \param append The existing log will be appended if true.
+     *  \return false if file couldn't be opened. */
+    static bool init(const char * fileName, bool append = false);
+
+    //! Enable/disable echo mode.
+    //! \param enable Echo everything if true. Default is false.
+    static void enableEchoMode(bool enable);
+
+    //! Enable/disable date and time prefix.
+    //! \param enable Prefix with date and time if true. Default is true.
+    static void enableDateTimePrefix(bool enable);
+
+    //! Get stream to the info log message.
+    std::ostringstream & info();
+
+    //! Get stream to the warning log message.
+    std::ostringstream & warning();
+
+    //! Get stream to the error log message.
+    std::ostringstream & error();
+
+    //! Get stream to the fatal log message.
+    std::ostringstream & fatal();
+
+private:
+
+    MCLogger(const MCLogger & r) = delete;
+    MCLogger & operator=(const MCLogger & r) = delete;
+
+    void prefixDateTime();
+
+    static bool m_echoMode;
+
+    static bool m_dateTime;
+
+    static FILE * m_file;
+
+    std::ostringstream m_oss;
+};
+
+#endif // MCLOGGER_HH

src/editor/draganddropstore.cpp

@@ -0,0 +1,58 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dust Racing 2D is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dust Racing 2D is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dust Racing 2D. If not, see <http://www.gnu.org/licenses/>.
+
+#include "draganddropstore.hpp"
+
+#include "node.hpp"
+
+DragAndDropStore::DragAndDropStore()
+{
+}
+
+void DragAndDropStore::clear()
+{
+    m_dragAndDropNode = nullptr;
+    m_dragAndDropNodeHandle = nullptr;
+}
+
+void DragAndDropStore::setDragAndDropNode(Node * tnode)
+{
+    m_dragAndDropNode = tnode;
+}
+
+Node * DragAndDropStore::dragAndDropNode() const
+{
+    return m_dragAndDropNode;
+}
+
+void DragAndDropStore::setDragAndDropSourcePos(QPointF pos)
+{
+    m_dragAndDropSourcePos = pos;
+}
+
+NodeHandle *DragAndDropStore::dragAndDropNodeHandle() const
+{
+    return m_dragAndDropNodeHandle;
+}
+
+void DragAndDropStore::setDragAndDropNodeHandle(NodeHandle * dragAndDropNodeHandle)
+{
+    m_dragAndDropNodeHandle = dragAndDropNodeHandle;
+}
+
+QPointF DragAndDropStore::dragAndDropSourcePos() const
+{
+    return m_dragAndDropSourcePos;
+}

src/editor/draganddropstore.hpp

@@ -0,0 +1,51 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dust Racing 2D is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dust Racing 2D is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dust Racing 2D. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef DRAGANDDROPSTORE_HPP
+#define DRAGANDDROPSTORE_HPP
+
+#include <QPointF>
+
+class Node;
+class NodeHandle;
+
+class DragAndDropStore
+{
+public:
+
+    DragAndDropStore();
+
+    void clear();
+
+    void setDragAndDropNode(Node * tnode);
+
+    Node * dragAndDropNode() const;
+    QPointF dragAndDropSourcePos() const;
+
+    void setDragAndDropSourcePos(QPointF pos);
+
+    NodeHandle *dragAndDropNodeHandle() const;
+    void setDragAndDropNodeHandle(NodeHandle * dragAndDropNodeHandle);
+
+private:
+
+    Node * m_dragAndDropNode = nullptr;
+
+    NodeHandle * m_dragAndDropNodeHandle = nullptr;
+
+    QPointF m_dragAndDropSourcePos;
+};
+
+#endif // DRAGANDDROPSTORE_HPP

src/editor/edge.cpp

@@ -0,0 +1,34 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "edge.hpp"
+#include "node.hpp"
+
+#include <QGraphicsDropShadowEffect>
+
+Edge::Edge(Node & sourceNode, Node & targetNode)
+    : m_sourceNode(sourceNode)
+    , m_targetNode(targetNode)
+{
+    QGraphicsDropShadowEffect * shadow = new QGraphicsDropShadowEffect();
+    shadow->setOffset(QPointF(3, 3));
+    shadow->setBlurRadius(5);
+    setGraphicsEffect(shadow);
+}
+
+void Edge::updateLine()
+{
+    setLine(m_sourceNode.pos().x(), m_sourceNode.pos().y(), m_targetNode.pos().x(), m_targetNode.pos().y());
+}

src/editor/edge.hpp

@@ -0,0 +1,42 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef EDGE_HPP
+#define EDGE_HPP
+
+#include <QGraphicsLineItem>
+#include <memory>
+
+class Node;
+
+//! A graphic representation of a graph edge between nodes.
+class Edge : public QGraphicsLineItem
+{
+public:
+
+    Edge(Node & sourceNode, Node & targetNode);
+
+    void updateLine();
+
+private:
+
+    Node & m_sourceNode;
+
+    Node & m_targetNode;
+};
+
+using EdgePtr = std::shared_ptr<Edge>;
+
+#endif // EDGE_HPP

src/editor/editor.pro

@@ -0,0 +1,67 @@
+# Qt project file to cross-compile the editor for Windows with MXE
+
+TEMPLATE = app
+TARGET   = dementia-editor
+
+DEFINES += DATA_PATH=\\\"./data\\\" VERSION=\\\"0.0.0\\\"
+QMAKE_CXXFLAGS += -std=gnu++11
+
+# Qt version check
+contains(QT_VERSION, ^5\\..*) {
+    message("Building for Qt version $${QT_VERSION}.")
+    QT += widgets xml
+} else {
+    error("Qt5 is required!")
+}
+
+INCLUDEPATH += . contrib
+
+# Input
+HEADERS +=  \
+    aboutdlg.hpp \
+    application.hpp \
+    config.hpp \
+    draganddropstore.hpp \
+    graph.hpp \
+    edge.hpp \
+    editordata.hpp \
+    editorview.hpp \
+    mainwindow.hpp \
+    mediator.hpp \
+    mindmapdata.hpp \
+    mindmapdatabase.hpp \
+    node.hpp \
+    nodebase.hpp \
+    nodehandle.hpp \
+    undostack.hpp \
+    contrib/mclogger.hh \
+
+SOURCES += \
+    aboutdlg.cpp \
+    application.cpp \
+    config.cpp \
+    draganddropstore.cpp \
+    graph.cpp \
+    edge.cpp \
+    editordata.cpp \
+    editorview.cpp \
+    main.cpp \
+    mainwindow.cpp \
+    mediator.cpp \
+    mindmapdata.cpp \
+    mindmapdatabase.cpp \
+    node.cpp \
+    nodebase.cpp \
+    nodehandle.cpp \
+    undostack.cpp \
+    contrib/mclogger.cc \
+
+
+RESOURCES += ../../data/icons/icons.qrc ../../data/images/images.qrc
+RC_FILE = ../../data/icons/WindowsDementia.rc
+//TRANSLATIONS += \
+//    translations/dementia_fi.ts
+
+target.path = $$OUT_PWD/../..
+INSTALLS += target
+

src/editor/editordata.cpp

@@ -0,0 +1,206 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "editordata.hpp"
+#include "mediator.hpp"
+#include "node.hpp"
+
+#include <cassert>
+#include <memory>
+
+using std::dynamic_pointer_cast;
+
+EditorData::EditorData(Mediator & mediator)
+    : m_mediator(mediator)
+{}
+
+void EditorData::clearScene()
+{
+    removeNodesFromScene();
+}
+
+DragAndDropStore & EditorData::dadStore()
+{
+    return m_dadStore;
+}
+
+bool EditorData::loadMindMapData(QString fileName)
+{
+    m_undoStack.clear();
+
+    clearScene();
+
+    //m_mindMapData = m_mindMapIO.open(fileName);
+    //return static_cast<bool>(m_mindMapData);
+    return false;
+}
+
+bool EditorData::isUndoable() const
+{
+    return m_undoStack.isUndoable();
+}
+
+void EditorData::undo()
+{
+    if (m_undoStack.isUndoable())
+    {
+        m_selectedNode = nullptr;
+
+        m_dragAndDropNode = nullptr;
+
+        saveRedoPoint();
+
+        clearScene();
+
+        m_mindMapData = m_undoStack.undo();
+    }
+}
+
+bool EditorData::isRedoable() const
+{
+    return m_undoStack.isRedoable();
+}
+
+void EditorData::redo()
+{
+    if (m_undoStack.isRedoable())
+    {
+        m_selectedNode = nullptr;
+
+        m_dragAndDropNode = nullptr;
+
+        saveUndoPoint();
+
+        clearScene();
+
+        m_mindMapData = m_undoStack.redo();
+    }
+}
+
+bool EditorData::saveMindMapData()
+{
+    assert(m_mindMapData);
+    return false;
+}
+
+void EditorData::saveUndoPoint()
+{
+    assert(m_mindMapData);
+    m_undoStack.pushUndoPoint(m_mindMapData);
+
+    m_mediator.enableUndo(m_undoStack.isUndoable());
+}
+
+void EditorData::saveRedoPoint()
+{
+    assert(m_mindMapData);
+    m_undoStack.pushRedoPoint(m_mindMapData);
+}
+
+bool EditorData::saveMindMapDataAs(QString fileName)
+{
+    // TODO
+
+    return false;
+}
+
+void EditorData::setMindMapData(MindMapDataPtr mindMapData)
+{
+    clearScene();
+
+    m_mindMapData = mindMapData;
+}
+
+void EditorData::addExistingGraphToScene()
+{
+    std::vector<NodeBasePtr> temp;
+    m_mindMapData->graph().getAll(temp);
+    for (auto node : temp)
+    {
+        addNodeToScene(node);
+    }
+}
+
+NodeBasePtr EditorData::createAndAddNodeToGraph(QPointF pos)
+{
+    NodeBasePtr node(new Node);
+    node->setLocation(pos);
+    m_mindMapData->graph().addNode(node);
+    return node;
+}
+
+NodeBasePtr EditorData::getNodeByIndex(int index)
+{
+    return m_mindMapData->graph().get(index);
+}
+
+void EditorData::addNodeToScene(NodeBasePtr node)
+{
+    auto ptr = std::dynamic_pointer_cast<Node>(node);
+    if (!ptr->scene())
+    {
+        m_mediator.addItem(*ptr); // The scene wants a raw pointer
+    }
+}
+
+void EditorData::removeGraphFromScene()
+{
+    for (auto && nodeIter : m_mindMapData->graph())
+    {
+        auto node = dynamic_pointer_cast<Node>(nodeIter.second);
+        assert(node);
+
+        m_mediator.removeItem(*node); // The scene wants a raw pointer
+    }
+
+    m_mediator.updateView();
+}
+
+MindMapDataPtr EditorData::mindMapData()
+{
+    return m_mindMapData;
+}
+
+void EditorData::setSelectedNode(Node * node)
+{
+    m_selectedNode = node;
+}
+
+Node * EditorData::selectedNode() const
+{
+    return m_selectedNode;
+}
+
+void EditorData::removeNodesFromScene()
+{
+    if (m_mindMapData)
+    {
+        for (auto nodeIter : m_mindMapData->graph())
+        {
+            auto node = dynamic_pointer_cast<Node>(nodeIter.second);
+            assert(node);
+
+            m_mediator.removeItem(*node); // The scene wants a raw pointer
+        }
+    }
+}
+
+void EditorData::clearGraph()
+{
+    assert(m_mindMapData);
+
+    removeGraphFromScene();
+    m_mindMapData->graph().clear();
+}

src/editor/editordata.hpp

@@ -0,0 +1,111 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef EDITORDATA_HPP
+#define EDITORDATA_HPP
+
+#include <memory>
+#include <vector>
+
+#include <QString>
+#include <QPointF>
+
+#include "draganddropstore.hpp"
+#include "undostack.hpp"
+#include "mindmapdata.hpp"
+
+class Mediator;
+class Node;
+class NodeBase;
+class MindMapTile;
+class QGraphicsLineItem;
+
+class EditorData
+{
+public:
+
+    EditorData(Mediator & mediator);
+
+    void addExistingGraphToScene();
+
+    void clearGraph();
+
+    NodeBasePtr createAndAddNodeToGraph(QPointF pos);
+
+    DragAndDropStore & dadStore();
+
+    NodeBasePtr getNodeByIndex(int index);
+
+    bool isUndoable() const;
+
+    bool isRedoable() const;
+
+    bool loadMindMapData(QString fileName);
+
+    MindMapDataPtr mindMapData();
+
+    void redo();
+
+    void removeGraphFromScene();
+
+    bool saveMindMapData();
+
+    bool saveMindMapDataAs(QString fileName);
+
+    void saveUndoPoint();
+
+    void saveRedoPoint();
+
+    void setMindMapData(MindMapDataPtr newMindMapData);
+
+    void setSelectedNode(Node * node);
+
+    Node * selectedNode() const;
+
+    void undo();
+
+private:
+
+    EditorData(const EditorData & e) = delete;
+    EditorData & operator= (const EditorData & e) = delete;
+
+    void addNodeToScene(NodeBasePtr node);
+
+    void clearScene();
+
+    void removeNodesFromScene();
+
+    DragAndDropStore m_dadStore;
+
+    MindMapDataPtr m_mindMapData;
+
+    UndoStack m_undoStack;
+
+    Node * m_selectedNode = nullptr;
+
+    Node * m_dragAndDropNode = nullptr;
+
+    QPointF m_dragAndDropSourcePos;
+
+    Mediator & m_mediator;
+
+    std::vector<QGraphicsLineItem *> m_targetNodes;
+
+    unsigned int m_activeColumn = 0;
+
+    unsigned int m_activeRow = 0;
+};
+
+#endif // EDITORDATA_HPP

src/editor/editorview.cpp

@@ -0,0 +1,273 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include <QApplication>
+#include <QGraphicsItem>
+#include <QMouseEvent>
+#include <QStatusBar>
+#include <QString>
+#include <QTransform>
+#include <iostream>
+#include "editorview.hpp"
+
+#include "draganddropstore.hpp"
+#include "mediator.hpp"
+#include "mindmapdata.hpp"
+#include "node.hpp"
+#include "nodehandle.hpp"
+
+#include <cassert>
+#include <cstdlib>
+
+EditorView::EditorView(Mediator & mediator)
+    : m_mediator(mediator)
+{
+    createNodeContextMenuActions();
+
+    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+}
+
+void EditorView::createNodeContextMenuActions()
+{
+    const QString dummy1(QString(QWidget::tr("Set size..")));
+    auto setSize = new QAction(dummy1, &m_targetNodeContextMenu);
+    QObject::connect(setSize, &QAction::triggered, [this] () {
+    });
+
+    // Populate the menu
+    m_targetNodeContextMenu.addAction(setSize);
+}
+
+void EditorView::handleMousePressEventOnNode(QMouseEvent & event, Node & node)
+{
+    if (event.button() == Qt::RightButton)
+    {
+        handleRightButtonClickOnNode(node);
+    }
+    else if (event.button() == Qt::LeftButton)
+    {
+        handleLeftButtonClickOnNode(node);
+    }
+
+    QWidget::mousePressEvent(&event);
+}
+
+void EditorView::handleMousePressEventOnNodeHandle(QMouseEvent & event, NodeHandle & nodeHandle)
+{
+    if (event.button() == Qt::LeftButton)
+    {
+        handleLeftButtonClickOnNodeHandle(nodeHandle);
+    }
+
+    QWidget::mousePressEvent(&event);
+}
+
+void EditorView::handleLeftButtonClickOnNode(Node & node)
+{
+    // User is initiating a drag'n'drop
+
+    m_mediator.saveUndoPoint();
+
+    node.setZValue(node.zValue() + 1);
+    m_mediator.dadStore().setDragAndDropNode(&node);
+
+    // Change cursor to the closed hand cursor.
+    QApplication::setOverrideCursor(QCursor(Qt::ClosedHandCursor));
+}
+
+void EditorView::handleLeftButtonClickOnNodeHandle(NodeHandle & nodeHandle)
+{
+    // User is initiating a drag'n'drop
+
+    m_mediator.saveUndoPoint();
+
+    m_mediator.dadStore().setDragAndDropNodeHandle(&nodeHandle);
+
+    // Change cursor to the closed hand cursor.
+    QApplication::setOverrideCursor(QCursor(Qt::ClosedHandCursor));
+}
+
+void EditorView::handleRightButtonClickOnNode(Node & node)
+{
+    m_mediator.setSelectedNode(&node);
+
+    openNodeContextMenu();
+}
+
+void EditorView::handleNodeDragRelease(QMouseEvent * event)
+{
+    if (auto node = m_mediator.dadStore().dragAndDropNode())
+    {
+        node->setLocation(mapToScene(event->pos()));
+        node->setZValue(node->zValue() - 1);
+
+        update();
+
+        m_mediator.dadStore().clear();
+
+        QApplication::restoreOverrideCursor();
+    }
+}
+
+void EditorView::handleNodeHandleDragRelease(QMouseEvent *)
+{
+    if (auto handle = m_mediator.dadStore().dragAndDropNodeHandle())
+    {
+        auto parentItem = dynamic_cast<Node *>(handle->parentItem());
+        assert(parentItem);
+
+        m_mediator.createAndAddNode(parentItem->index(), m_mappedPos - handle->pos());
+
+        hideDummyDragNode();
+
+        m_mediator.dadStore().clear();
+
+        QApplication::restoreOverrideCursor();
+    }
+}
+
+void EditorView::hideDummyDragNode()
+{
+    if (m_dummyDragNode)
+    {
+        m_dummyDragNode->setVisible(false);
+    }
+}
+
+void EditorView::keyPressEvent(QKeyEvent * event)
+{
+    if (!event->isAutoRepeat())
+    {
+        switch (event->key())
+        {
+        default:
+            break;
+        }
+    }
+}
+
+void EditorView::mouseMoveEvent(QMouseEvent * event)
+{
+    m_mappedPos = mapToScene(event->pos());
+    if (auto node = m_mediator.dadStore().dragAndDropNode())
+    {
+        node->setLocation(m_mappedPos);
+    }
+    else if (auto handle = m_mediator.dadStore().dragAndDropNodeHandle())
+    {
+        showDummyDragNode();
+
+        m_dummyDragNode->setPos(m_mappedPos - handle->pos());
+    }
+
+    QGraphicsView::mouseMoveEvent(event);
+}
+
+void EditorView::mousePressEvent(QMouseEvent * event)
+{
+    m_clickedPos = event->pos();
+    m_clickedScenePos = mapToScene(m_clickedPos);
+
+    // Fetch all items at the location
+    QList<QGraphicsItem *> items = scene()->items(
+                m_clickedScenePos, Qt::IntersectsItemShape, Qt::DescendingOrder);
+
+    if (items.size())
+    {
+        auto item = *items.begin();
+        if (auto node = dynamic_cast<Node *>(item))
+        {
+            handleMousePressEventOnNode(*event, *node);
+        }
+        else if (auto node = dynamic_cast<NodeHandle *>(item))
+        {
+            handleMousePressEventOnNodeHandle(*event, *node);
+        }
+    }
+}
+
+void EditorView::mouseReleaseEvent(QMouseEvent * event)
+{
+    handleNodeDragRelease(event);
+
+    handleNodeHandleDragRelease(event);
+
+    QGraphicsView::mouseReleaseEvent(event);
+}
+
+void EditorView::openNodeContextMenu()
+{
+    const QPoint globalPos = mapToGlobal(m_clickedPos);
+    m_targetNodeContextMenu.exec(globalPos);
+}
+
+void EditorView::showDummyDragNode()
+{
+    if (!m_dummyDragNode)
+    {
+        m_dummyDragNode = new Node;
+        scene()->addItem(m_dummyDragNode);
+    }
+
+    m_dummyDragNode->setVisible(true);
+    m_dummyDragNode->setOpacity(0.5f);
+}
+
+void EditorView::updateSceneRect()
+{
+    const QRectF newSceneRect(-1000, -1000, 2000, 2000);
+
+    setSceneRect(newSceneRect);
+
+    assert(scene());
+    scene()->setSceneRect(newSceneRect);
+}
+
+void EditorView::updateScale(int value)
+{
+    qreal scale = static_cast<qreal>(value) / 100;
+
+    QTransform transform;
+    transform.scale(scale, scale);
+    setTransform(transform);
+}
+
+void EditorView::wheelEvent(QWheelEvent * event)
+{
+    if (event->modifiers() & Qt::ControlModifier)
+    {
+        const int sensitivity = 10;
+        if (event->delta() > 0)
+        {
+            m_scaleValue += sensitivity;
+        }
+        else if (m_scaleValue > sensitivity)
+        {
+            m_scaleValue -= sensitivity;
+        }
+
+        updateScale(m_scaleValue);
+    }
+    else
+    {
+        QGraphicsView::wheelEvent(event);
+    }
+}
+
+EditorView::~EditorView()
+{
+    delete m_dummyDragNode;
+}

src/editor/editorview.hpp

@@ -0,0 +1,112 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef EDITORVIEW_HPP
+#define EDITORVIEW_HPP
+
+#include <QGraphicsView>
+#include <QMenu>
+
+class QAction;
+class QMouseEvent;
+class QPaintEvent;
+class QWheelEvent;
+class Object;
+class ObjectModelLoaderoader;
+class Node;
+class NodeHandle;
+class Mediator;
+class MindMapTile;
+
+class EditorView : public QGraphicsView
+{
+    Q_OBJECT
+
+public:
+
+    explicit EditorView(Mediator & mediator);
+
+    ~EditorView();
+
+    void updateSceneRect();
+
+protected:
+
+    void mouseMoveEvent(QMouseEvent * event) override;
+
+    void mousePressEvent(QMouseEvent * event) override;
+
+    void mouseReleaseEvent(QMouseEvent * event) override;
+
+    void keyPressEvent(QKeyEvent * event) override;
+
+    void wheelEvent(QWheelEvent * event) override;
+
+private:
+
+    void createNodeContextMenuActions();
+
+    void handleMousePressEventOnNode(QMouseEvent & event, Node & node);
+
+    void handleMousePressEventOnNodeHandle(QMouseEvent & event, NodeHandle & nodeHandle);
+
+    void handleLeftButtonClickOnNode(Node & node);
+
+    void handleLeftButtonClickOnNodeHandle(NodeHandle & nodeHandle);
+
+    void handleRightButtonClickOnNode(Node & node);
+
+    void handleNodeDragRelease(QMouseEvent * event);
+
+    void handleNodeHandleDragRelease(QMouseEvent * event);
+
+    void hideDummyDragNode();
+
+    void openNodeContextMenu();
+
+    void showDummyDragNode();
+
+    void updateScale(int value);
+
+    QMenu m_targetNodeContextMenu;
+
+    QPoint m_clickedPos;
+
+    QPointF m_clickedScenePos;
+
+    QAction * m_clearComputerHint = nullptr;
+
+    QAction * m_setComputerHintBrakeHard = nullptr;
+
+    QAction * m_setComputerHintBrake = nullptr;
+
+    QAction * m_deleteRow = nullptr;
+
+    QAction * m_deleteCol = nullptr;
+
+    QAction * m_excludeFromMinimap = nullptr;
+
+    QAction * m_forceStationaryAction = nullptr;
+
+    QPointF m_mappedPos;
+
+    int m_scaleValue = 100;
+
+    Mediator & m_mediator;
+
+    Node * m_dummyDragNode = nullptr;
+};
+
+#endif // EDITORVIEW_HPP

src/editor/graph.cpp

@@ -0,0 +1,93 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "graph.hpp"
+#include "nodebase.hpp"
+
+#include <algorithm>
+#include <cassert>
+#include <cmath>
+
+Graph::Graph()
+{
+}
+
+void Graph::clear()
+{
+    m_nodes.clear();
+}
+
+void Graph::addNode(NodeBasePtr node)
+{
+    if (node && m_nodes.count(node->index()) == 0)
+    {
+        node->setIndex(m_count);
+        m_nodes.insert({node->index(), node});
+        m_count++;
+    }
+}
+
+void Graph::addEdge(NodeBasePtr node0, NodeBasePtr node1)
+{
+
+}
+
+int Graph::numNodes() const
+{
+    return m_nodes.size();
+}
+
+NodeBasePtr Graph::get(int id)
+{
+    if (m_nodes.count(id))
+    {
+        return m_nodes[id];
+    }
+
+    return NodeBasePtr();
+}
+
+void Graph::getAll(NodeVector & nodeVector) const
+{
+    nodeVector.clear();
+    for (auto const & iter : m_nodes)
+    {
+        nodeVector.push_back(iter.second);
+    }
+}
+
+Graph::NodeMap::iterator Graph::begin()
+{
+    return m_nodes.begin();
+}
+
+Graph::NodeMap::iterator Graph::end()
+{
+    return m_nodes.end();
+}
+
+Graph::NodeMap::const_iterator Graph::cbegin() const
+{
+    return m_nodes.cbegin();
+}
+
+Graph::NodeMap::const_iterator Graph::cend() const
+{
+    return m_nodes.cend();
+}
+
+Graph::~Graph()
+{
+}

src/editor/graph.hpp

@@ -0,0 +1,71 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef GRAPH_HPP
+#define GRAPH_HPP
+
+#include "nodebase.hpp"
+
+#include <map>
+#include <set>
+
+class NodeBase;
+
+class Graph
+{
+public:
+
+    Graph();
+
+    Graph(const Graph & other) = delete;
+
+    Graph & operator= (const Graph & other) = delete;
+
+    virtual ~Graph();
+
+    using NodeVector = std::vector<NodeBasePtr>;
+
+    using NodeMap = std::map<int, NodeBasePtr>;
+
+    void clear();
+
+    void addNode(NodeBasePtr node);
+
+    void addEdge(NodeBasePtr node0, NodeBasePtr node1);
+
+    int numNodes() const;
+
+    NodeBasePtr get(int id);
+
+    void getAll(NodeVector & nodeVector) const;
+
+    NodeMap::iterator begin();
+
+    NodeMap::iterator end();
+
+    NodeMap::const_iterator cbegin() const;
+
+    NodeMap::const_iterator cend() const;
+
+private:
+
+    std::map<int, NodeBasePtr> m_nodes;
+
+    std::map<int, std::set<int> > m_edges;
+
+    int m_count = 0;
+};
+
+#endif // GRAPH_HPP

src/editor/images/about.svg

@@ -0,0 +1,187 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="312"
+   height="312"
+   viewBox="0 0 312 312"
+   id="svg2"
+   version="1.1"
+   inkscape:version="0.91 r13725"
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src/editor/main.cpp

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+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include <QApplication>
+#include <QSettings>
+
+#include "application.hpp"
+#include "config.hpp"
+#include "userexception.hpp"
+#include "mclogger.hh"
+
+#include <cstdlib>
+#include <iostream>
+#include <memory>
+
+#include <QDir>
+
+#if QT_VERSION < 0x50600
+extern Q_CORE_EXPORT QBasicAtomicInt qt_qhash_seed;
+#endif
+
+static void initLogger()
+{
+    QString logPath = QDir::tempPath() + QDir::separator() + "dementia.log";
+    MCLogger::init(logPath.toStdString().c_str());
+    MCLogger::enableEchoMode(true);
+    MCLogger::enableDateTimePrefix(true);
+    MCLogger().info() << Config::Editor::QSETTINGS_SOFTWARE_NAME.toStdString() << " version " << VERSION;
+    MCLogger().info() << "Compiled against Qt version " << QT_VERSION_STR;
+}
+
+int main(int argc, char ** argv)
+{
+#if QT_VERSION >= 0x50600
+    qSetGlobalQHashSeed(0);
+#else
+    qt_qhash_seed.store(0);
+#endif
+
+    QApplication::setOrganizationName(Config::Common::QSETTINGS_COMPANY_NAME);
+    QApplication::setApplicationName(Config::Editor::QSETTINGS_SOFTWARE_NAME);
+#ifdef Q_OS_WIN32
+    QSettings::setDefaultFormat(QSettings::IniFormat);
+#endif
+
+    std::unique_ptr<Application> app;
+
+    try
+    {
+        initLogger();
+
+        app.reset(new Application(argc, argv));
+
+        return app->run();
+    }
+    catch (std::exception & e)
+    {
+        if (!dynamic_cast<UserException *>(&e))
+        {
+            std::cerr << e.what() << std::endl;
+        }
+
+        app.reset();
+
+        return EXIT_FAILURE;
+    }
+}

src/editor/mainwindow.cpp

@@ -0,0 +1,310 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either Config::Editor 3 of the License, or
+// (at your option) any later Config::Editor.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "mainwindow.hpp"
+
+#include "config.hpp"
+#include "aboutdlg.hpp"
+#include "mediator.hpp"
+#include "mindmapdata.hpp"
+
+#include <QAction>
+#include <QApplication>
+#include <QDateTime>
+#include <QDesktopWidget>
+#include <QFileDialog>
+#include <QGraphicsLineItem>
+#include <QMenu>
+#include <QMenuBar>
+#include <QMessageBox>
+#include <QSettings>
+#include <QStandardPaths>
+#include <QTimer>
+#include <QToolBar>
+#include <QHBoxLayout>
+#include <QVBoxLayout>
+
+#include <cassert>
+
+MainWindow * MainWindow::m_instance = nullptr;
+
+MainWindow::MainWindow(QString mindMapFile)
+: m_aboutDlg(new AboutDlg(this))
+, m_argMindMapFile(mindMapFile)
+, m_mediator(new Mediator(*this))
+{
+    if (!m_instance)
+    {
+        m_instance = this;
+    }
+    else
+    {
+        qFatal("MainWindow already instantiated!");
+    }
+
+    setWindowIcon(QIcon(":/dementia-editor.png"));
+
+    init();
+
+    if (!m_argMindMapFile.isEmpty())
+    {
+        QTimer::singleShot(0, this, SLOT(openArgMindMap()));
+    }
+}
+
+void MainWindow::openArgMindMap()
+{
+    doOpenMindMap(m_argMindMapFile);
+}
+
+void MainWindow::init()
+{
+    setTitle(tr("New file"));
+
+    QSettings settings;
+
+    // Read dialog size data
+    settings.beginGroup(m_settingsGroup);
+    resize(settings.value("size", QSize(640, 480)).toSize());
+    settings.endGroup();
+
+    // Try to center the window.
+    QRect geometry(QApplication::desktop()->availableGeometry());
+    move(geometry.width() / 2 - width() / 2,
+        geometry.height() / 2 - height() / 2);
+
+    m_mediator->initScene();
+
+    populateMenuBar();
+}
+
+void MainWindow::setTitle(QString openFileName)
+{
+    setWindowTitle(
+        QString(Config::Editor::EDITOR_NAME) + " " + Config::Editor::EDITOR_VERSION + " - " +
+        openFileName);
+}
+
+MainWindow * MainWindow::instance()
+{
+    return MainWindow::m_instance;
+}
+
+void MainWindow::closeEvent(QCloseEvent * event)
+{
+    // Open settings file
+    QSettings settings;
+
+    // Save window size
+    settings.beginGroup(m_settingsGroup);
+    settings.setValue("size", size());
+    settings.endGroup();
+
+    event->accept();
+}
+
+void MainWindow::populateMenuBar()
+{
+    // Create "file"-menu
+    QMenu * fileMenu = menuBar()->addMenu(tr("&File"));
+
+    // Add "new"-action
+    QAction * newAct = new QAction(tr("&New..."), this);
+    newAct->setShortcut(QKeySequence("Ctrl+N"));
+    fileMenu->addAction(newAct);
+    connect(newAct, SIGNAL(triggered()), this, SLOT(initializeNewMindMap()));
+
+    // Add "open"-action
+    QAction * openAct = new QAction(tr("&Open..."), this);
+    openAct->setShortcut(QKeySequence("Ctrl+O"));
+    fileMenu->addAction(openAct);
+    connect(openAct, SIGNAL(triggered()), this, SLOT(openMindMap()));
+
+    // Add "save"-action
+    m_saveAction = new QAction(tr("&Save"), this);
+    m_saveAction->setShortcut(QKeySequence("Ctrl+S"));
+    fileMenu->addAction(m_saveAction);
+    connect(m_saveAction, SIGNAL(triggered()), this, SLOT(saveMindMap()));
+    m_saveAction->setEnabled(false);
+
+    // Add "save as"-action
+    m_saveAsAction = new QAction(tr("&Save as..."), this);
+    m_saveAsAction->setShortcut(QKeySequence("Ctrl+Shift+S"));
+    fileMenu->addAction(m_saveAsAction);
+    connect(m_saveAsAction, SIGNAL(triggered()), this, SLOT(saveAsMindMap()));
+    m_saveAsAction->setEnabled(false);
+
+    // Add "quit"-action
+    QAction * quitAct = new QAction(tr("&Quit"), this);
+    quitAct->setShortcut(QKeySequence("Ctrl+W"));
+    fileMenu->addAction(quitAct);
+    connect(quitAct, SIGNAL(triggered()), this, SLOT(close()));
+
+    // Create "edit"-menu
+    QMenu * editMenu = menuBar()->addMenu(tr("&Edit"));
+
+    // Add "undo"-action
+    m_undoAction = new QAction(tr("Undo"), this);
+    m_undoAction->setShortcut(QKeySequence("Ctrl+Z"));
+    editMenu->addAction(m_undoAction);
+    connect(m_undoAction, &QAction::triggered, [this](){
+        m_mediator->undo();
+
+        setupMindMapAfterUndoOrRedo();
+
+        m_undoAction->setEnabled(m_mediator->isUndoable());
+        m_redoAction->setEnabled(m_mediator->isRedoable());
+    });
+    m_undoAction->setEnabled(false);
+
+    // Add "redo"-action
+    m_redoAction = new QAction(tr("Redo"), this);
+    m_redoAction->setShortcut(QKeySequence("Ctrl+Shift+Z"));
+    editMenu->addAction(m_redoAction);
+    connect(m_redoAction, &QAction::triggered, [this](){
+        m_mediator->redo();
+
+        setupMindMapAfterUndoOrRedo();
+
+        m_undoAction->setEnabled(m_mediator->isUndoable());
+        m_redoAction->setEnabled(m_mediator->isRedoable());
+    });
+    m_redoAction->setEnabled(false);
+
+    // Create "help"-menu
+    QMenu * helpMenu = menuBar()->addMenu(tr("&Help"));
+
+    // Add "about"-action
+    QAction * aboutAct = new QAction(tr("&About"), this);
+    helpMenu->addAction(aboutAct);
+    connect(aboutAct, SIGNAL(triggered()), this, SLOT(showAboutDlg()));
+
+    // Add "about Qt"-action
+    QAction * aboutQtAct = new QAction(tr("About &Qt"), this);
+    helpMenu->addAction(aboutQtAct);
+    connect(aboutQtAct, SIGNAL(triggered()), this, SLOT(showAboutQtDlg()));
+}
+
+void MainWindow::openMindMap()
+{
+    // Load recent path
+    QSettings settings;
+
+    settings.beginGroup(m_settingsGroup);
+    QString path = settings.value("recentPath",
+    QStandardPaths::writableLocation(QStandardPaths::HomeLocation)).toString();
+    settings.endGroup();
+
+    const QString fileName = QFileDialog::getOpenFileName(
+        this, tr("Open a mindMap"), path, tr("MindMap Files (*.dm3)"));
+    if (!fileName.isEmpty())
+    {
+        doOpenMindMap(fileName);
+    }
+}
+
+void MainWindow::showAboutDlg()
+{
+    m_aboutDlg->exec();
+}
+
+void MainWindow::showAboutQtDlg()
+{
+    QMessageBox::aboutQt(this, tr("About Qt"));
+}
+
+bool MainWindow::doOpenMindMap(QString fileName)
+{
+    if (!QFile::exists(fileName))
+    {
+        return false;
+    }
+
+    // Undo stack will be cleared.
+    m_undoAction->setEnabled(false);
+    m_redoAction->setEnabled(false);
+
+    if (m_mediator->openMindMap(fileName))
+    {
+        setTitle(fileName);
+
+        // Save recent path
+        QSettings settings;
+
+        settings.beginGroup(m_settingsGroup);
+        settings.setValue("recentPath", fileName);
+        settings.endGroup();
+
+        m_saveAction->setEnabled(true);
+
+        setActionStatesOnNewMindMap();
+
+        m_saved = true;
+
+        return true;
+    }
+
+    return false;
+}
+
+void MainWindow::setupMindMapAfterUndoOrRedo()
+{
+    m_saveAction->setEnabled(true);
+
+    setActionStatesOnNewMindMap();
+
+    m_mediator->setupMindMapAfterUndoOrRedo();
+}
+
+void MainWindow::saveMindMap()
+{
+    // TODO
+}
+
+void MainWindow::saveAsMindMap()
+{
+    // TODO
+}
+
+void MainWindow::initializeNewMindMap()
+{
+    m_mediator->initializeNewMindMap();
+
+    // Undo stack has been cleared.
+    m_undoAction->setEnabled(false);
+    m_redoAction->setEnabled(false);
+
+    setActionStatesOnNewMindMap();
+
+    setTitle(tr("New file"));
+
+    m_saved = false;
+}
+
+void MainWindow::setActionStatesOnNewMindMap()
+{
+    m_saveAction->setEnabled(true);
+    m_saveAsAction->setEnabled(true);
+}
+
+void MainWindow::enableUndo(bool enable)
+{
+    m_undoAction->setEnabled(enable);
+}
+
+MainWindow::~MainWindow()
+{
+    delete m_mediator;
+}

src/editor/mainwindow.hpp

@@ -0,0 +1,107 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef MAINWINDOW_HPP
+#define MAINWINDOW_HPP
+
+#include <QMainWindow>
+#include <QCloseEvent>
+#include <QGraphicsScene>
+#include <QString>
+
+class AboutDlg;
+class EditorData;
+class EditorView;
+class QAction;
+class QCheckBox;
+class QSlider;
+class QTextEdit;
+class Mediator;
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+
+    explicit MainWindow(QString mindMapFile = "");
+
+    ~MainWindow();
+
+    static MainWindow * instance();
+
+    void console(QString text);
+
+    void setTitle(QString openFileName);
+
+public slots:
+
+    void enableUndo(bool enable);
+
+protected:
+
+    void closeEvent(QCloseEvent * event) override;
+
+private slots:
+
+    bool doOpenMindMap(QString fileName);
+
+    void initializeNewMindMap();
+
+    void saveMindMap();
+
+    void saveAsMindMap();
+
+    void setupMindMapAfterUndoOrRedo();
+
+    void showAboutDlg();
+
+    void showAboutQtDlg();
+
+    void openArgMindMap();
+
+    void openMindMap();
+
+private:
+
+    void init();
+
+    void populateMenuBar();
+
+    void setActionStatesOnNewMindMap();
+
+    AboutDlg * m_aboutDlg;
+
+    QAction * m_saveAction = nullptr;
+
+    QAction * m_saveAsAction = nullptr;
+
+    QAction * m_undoAction = nullptr;
+
+    QAction * m_redoAction = nullptr;
+
+    QString m_argMindMapFile;
+
+    bool m_saved = false;
+
+    const char * m_settingsGroup = "MainWindow";
+
+    Mediator * m_mediator;
+
+    static MainWindow * m_instance;
+};
+
+#endif // MAINWINDOW_HPP
+

src/editor/mediator.cpp

@@ -0,0 +1,188 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "mediator.hpp"
+
+#include "draganddropstore.hpp"
+#include "editordata.hpp"
+#include "editorview.hpp"
+#include "mainwindow.hpp"
+
+#include <QGraphicsItem>
+#include <QGraphicsScene>
+#include <QSizePolicy>
+
+#include <cassert>
+
+Mediator::Mediator(MainWindow & mainWindow)
+    : m_editorData(new EditorData(*this))
+    , m_editorScene(new QGraphicsScene)
+    , m_editorView(new EditorView(*this))
+    , m_mainWindow(mainWindow)
+{
+    m_editorView->setParent(&mainWindow);
+}
+
+void Mediator::addItem(QGraphicsItem & item)
+{
+    m_editorScene->addItem(&item);
+}
+
+NodeBasePtr Mediator::createAndAddNode(int sourceNodeIndex, QPointF pos)
+{
+    auto targetNode = std::dynamic_pointer_cast<Node>(m_editorData->createAndAddNodeToGraph(pos));
+    assert(targetNode);
+
+    auto sourceNode = std::dynamic_pointer_cast<Node>(getNodeByIndex(sourceNodeIndex));
+    assert(sourceNode);
+
+    auto graphicsEgde = sourceNode->createAndAddEdge(targetNode);
+    targetNode->addEdge(graphicsEgde);
+
+    addItem(*graphicsEgde); // QGraphicsScene needs the raw pointer
+
+    m_editorData->addExistingGraphToScene();
+
+    return targetNode;
+}
+
+DragAndDropStore & Mediator::dadStore()
+{
+    return m_editorData->dadStore();
+}
+
+void Mediator::enableUndo(bool enable)
+{
+    m_mainWindow.enableUndo(enable);
+}
+
+int Mediator::fitScale()
+{
+    m_editorView->centerOn(m_editorView->sceneRect().center());
+    return m_editorView->viewport()->height() * 100 / m_editorView->sceneRect().height();
+}
+
+NodeBasePtr Mediator::getNodeByIndex(int index)
+{
+    return m_editorData->getNodeByIndex(index);
+}
+
+void Mediator::initializeNewMindMap()
+{
+    assert(m_editorData);
+
+    m_editorData->setMindMapData(MindMapDataPtr(new MindMapData));
+
+    delete m_editorScene;
+    m_editorScene = new QGraphicsScene;
+
+    m_editorView->setScene(m_editorScene);
+    m_editorView->updateSceneRect();
+
+    m_editorData->createAndAddNodeToGraph(QPointF(0, 0));
+    m_editorData->addExistingGraphToScene();
+
+    fitScale();
+}
+
+void Mediator::initScene()
+{
+    // Set scene to the view
+    m_editorView->setScene(m_editorScene);
+    m_editorView->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding);
+    m_editorView->setMouseTracking(true);
+    m_editorView->setBackgroundBrush(QBrush(QColor(128, 200, 255, 255)));
+
+    m_mainWindow.setCentralWidget(m_editorView);
+    m_mainWindow.setContentsMargins(0, 0, 0, 0);
+}
+
+bool Mediator::isRedoable() const
+{
+    return m_editorData->isRedoable();
+}
+
+bool Mediator::isUndoable() const
+{
+    return m_editorData->isUndoable();
+}
+
+bool Mediator::openMindMap(QString fileName)
+{
+    assert(m_editorData);
+
+    if (m_editorData->loadMindMapData(fileName))
+    {
+        delete m_editorScene;
+        m_editorScene = new QGraphicsScene;
+
+        m_editorView->setScene(m_editorScene);
+        m_editorView->updateSceneRect();
+
+        m_editorData->addExistingGraphToScene();
+
+        fitScale();
+
+        return true;
+    }
+
+    return false;
+}
+
+void Mediator::redo()
+{
+    m_editorData->redo();
+}
+
+void Mediator::removeItem(QGraphicsItem & item)
+{
+    m_editorScene->removeItem(&item);
+}
+
+void Mediator::saveUndoPoint()
+{
+    m_editorData->saveUndoPoint();
+}
+
+void Mediator::setSelectedNode(Node * node)
+{
+    m_editorData->setSelectedNode(node);
+}
+
+void Mediator::setupMindMapAfterUndoOrRedo()
+{
+    delete m_editorScene;
+    m_editorScene = new QGraphicsScene;
+
+    m_editorView->setScene(m_editorScene);
+    m_editorView->updateSceneRect();
+
+    m_editorData->addExistingGraphToScene();
+}
+
+void Mediator::undo()
+{
+    m_editorData->undo();
+}
+
+void Mediator::updateView()
+{
+    m_editorView->update();
+}
+
+Mediator::~Mediator()
+{
+    delete m_editorData;
+}

src/editor/mediator.hpp

@@ -0,0 +1,91 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef MEDIATOR_HPP
+#define MEDIATOR_HPP
+
+#include <QString>
+#include <QPointF>
+
+#include "node.hpp"
+
+class DragAndDropStore;
+class EditorData;
+class EditorView;
+class MainWindow;
+class QGraphicsItem;
+class QGraphicsScene;
+
+/*! Acts as a communication channel between MainWindow and editor components:
+ *
+ *  - MainWindow <-> Mediator <-> QGraphicsScene / EditorView / EditorData
+ *  - EditorView <-> Mediator <-> EditorData
+ */
+class Mediator
+{
+public:
+
+    explicit Mediator(MainWindow & mainWindow);
+
+    ~Mediator();
+
+    void addItem(QGraphicsItem & item);
+
+    NodeBasePtr createAndAddNode(int sourceNodeIndex, QPointF pos);
+
+    DragAndDropStore & dadStore();
+
+    void enableUndo(bool enable);
+
+    int fitScale();
+
+    NodeBasePtr getNodeByIndex(int index);
+
+    void initializeNewMindMap();
+
+    void initScene();
+
+    bool isUndoable() const;
+
+    bool isRedoable() const;
+
+    bool openMindMap(QString fileName);
+
+    void redo();
+
+    void removeItem(QGraphicsItem & item);
+
+    void saveUndoPoint();
+
+    void setSelectedNode(Node * node);
+
+    void setupMindMapAfterUndoOrRedo();
+
+    void undo();
+
+    void updateView();
+
+private:
+
+    EditorData * m_editorData;
+
+    QGraphicsScene * m_editorScene;
+
+    EditorView * m_editorView;
+
+    MainWindow & m_mainWindow;
+};
+
+#endif // MEDIATOR_HPP

src/editor/mindmapdata.cpp

@@ -0,0 +1,69 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "mindmapdata.hpp"
+
+#include "node.hpp"
+
+#include <memory>
+
+MindMapData::MindMapData(QString name)
+    : MindMapDataBase(name)
+{}
+
+MindMapData::MindMapData(const MindMapData & other)
+    : MindMapDataBase(other)
+    , m_fileName(other.m_fileName)
+{
+    copyGraph(other);
+}
+
+void MindMapData::copyGraph(const MindMapData & other)
+{
+    m_graph.clear();
+
+    // TODO
+    //for (auto iter = other.m_graph.cbegin(); iter != other.m_graph.cend(); iter++)
+    //{
+    //    auto node = std::dynamic_pointer_cast<Node>(*iter);
+    //    auto newNode = new Node(*(node.get()));
+    //
+    //    m_graph.add(NodeBasePtr(newNode));
+    //}
+}
+
+QString MindMapData::fileName() const
+{
+    return m_fileName;
+}
+
+void MindMapData::setFileName(QString newFileName)
+{
+    m_fileName = newFileName;
+}
+
+Graph & MindMapData::graph()
+{
+    return m_graph;
+}
+
+const Graph & MindMapData::graph() const
+{
+    return m_graph;
+}
+
+MindMapData::~MindMapData()
+{
+}

src/editor/mindmapdata.hpp

@@ -0,0 +1,55 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef MINDMAPDATA_HPP
+#define MINDMAPDATA_HPP
+
+#include <QString>
+
+#include "mindmapdatabase.hpp"
+#include "graph.hpp"
+
+class ObjectModelLoader;
+
+class MindMapData : public MindMapDataBase
+{
+public:
+
+    MindMapData(QString name = "");
+
+    MindMapData(const MindMapData & other);
+
+    virtual ~MindMapData();
+
+    QString fileName() const;
+
+    void setFileName(QString fileName);
+
+    Graph & graph();
+
+    const Graph & graph() const;
+
+private:
+
+    void copyGraph(const MindMapData & other);
+
+    QString m_fileName;
+
+    Graph m_graph;
+};
+
+typedef std::shared_ptr<MindMapData> MindMapDataPtr;
+
+#endif // MINDMAPDATA_HPP

src/editor/mindmapdatabase.cpp

@@ -0,0 +1,50 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "mindmapdatabase.hpp"
+
+MindMapDataBase::MindMapDataBase(QString name)
+    : m_name(name)
+{
+}
+
+MindMapDataBase::MindMapDataBase(const MindMapDataBase & other)
+    : m_name(other.m_name)
+{
+}
+
+QString MindMapDataBase::name() const
+{
+    return m_name;
+}
+
+unsigned int MindMapDataBase::index() const
+{
+    return m_index;
+}
+
+void MindMapDataBase::setName(QString name)
+{
+    m_name = name;
+}
+
+void MindMapDataBase::setIndex(unsigned int index)
+{
+    m_index = index;
+}
+
+MindMapDataBase::~MindMapDataBase()
+{
+}

src/editor/mindmapdatabase.hpp

@@ -0,0 +1,108 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef MINDMAPDATABASE_HPP
+#define MINDMAPDATABASE_HPP
+
+#include <QString>
+
+class Graph;
+
+//! Common base class for track data shared by the editor and the game.
+class MindMapDataBase
+{
+public:
+
+    /** Keywords used in the track data files.
+     *  TODO: Use constexpr when MSVC supports it properly. */
+    struct DataKeywords
+    {
+        struct Header
+        {
+            static QString ver()
+            {
+                return "version";
+            }
+
+            static QString name()
+            {
+                return "name";
+            }
+        };
+
+        struct Node
+        {
+            static QString index()
+            {
+                return "i";
+            }
+
+            static QString x()
+            {
+                return "x";
+            }
+
+            static QString y()
+            {
+                return "y";
+            }
+
+            static QString width()
+            {
+                return "w";
+            }
+
+            static QString height()
+            {
+                return "h";
+            }
+        };
+    };
+
+    //! Constructor.
+    MindMapDataBase(QString name);
+
+    //! Copy constructor.
+    MindMapDataBase(const MindMapDataBase & other);
+
+    MindMapDataBase & operator= (const MindMapDataBase & other) = delete;
+
+    //! Destructor.
+    virtual ~MindMapDataBase();
+
+    virtual QString name() const;
+
+    virtual void setName(QString name);
+
+    virtual QString fileName() const = 0;
+
+    virtual void setFileName(QString fileName) = 0;
+
+    virtual unsigned int index() const;
+
+    virtual void setIndex(unsigned int index);
+
+    virtual Graph & graph() = 0;
+
+    virtual const Graph & graph() const = 0;
+
+private:
+
+    QString m_name;
+
+    unsigned int m_index;
+};
+
+#endif // MINDMAPDATABASE_HPP

src/editor/node.cpp

@@ -0,0 +1,140 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "node.hpp"
+
+#include "edge.hpp"
+#include "nodehandle.hpp"
+
+#include <QGraphicsDropShadowEffect>
+#include <QPainter>
+#include <QPen>
+#include <QVector2D>
+
+Node::Node()
+{
+    setAcceptHoverEvents(true);
+
+    setSize(QSize(200, 150));
+
+    setZValue(10);
+
+    createHandles();
+
+    QGraphicsDropShadowEffect * shadow = new QGraphicsDropShadowEffect();
+    shadow->setOffset(QPointF(3, 3));
+    shadow->setBlurRadius(5);
+    setGraphicsEffect(shadow);
+}
+
+Node::Node(const Node & other)
+    : QGraphicsItem()
+    , NodeBase()
+{
+    setAcceptHoverEvents(true);
+
+    setIndex(other.index());
+
+    setLocation(other.location());
+
+    setSize(other.size());
+
+    setZValue(10);
+}
+
+void Node::addEdge(EdgePtr edge)
+{
+    m_edges.push_back(edge);
+}
+
+QRectF Node::boundingRect() const
+{
+    // The bounding rect has to cover also child nodes
+    const int margin = m_handleRadius;
+    return QRectF(-size().width() / 2 - margin, -size().height() / 2 - margin, size().width() + margin * 2, size().height() + margin * 2);
+}
+
+EdgePtr Node::createAndAddEdge(NodePtr targetNode)
+{
+    auto edge = EdgePtr(new Edge(*this, *targetNode));
+    edge->updateLine();
+    m_edges.push_back(edge);
+    return edge;
+}
+
+void Node::createHandles()
+{
+    const std::vector<QPointF> positions = {
+        {0, size().height() * 0.5f}
+    };
+
+    for (auto position : positions)
+    {
+        auto handle = new NodeHandle(m_handleRadius);
+        handle->setParentItem(this);
+        handle->setPos(position);
+        m_handles.push_back(handle);
+    }
+}
+
+void Node::hoverEnterEvent(QGraphicsSceneHoverEvent * event)
+{
+    setHandlesVisible(true);
+
+    QGraphicsItem::hoverEnterEvent(event);
+}
+
+void Node::hoverLeaveEvent(QGraphicsSceneHoverEvent * event)
+{
+    setHandlesVisible(false);
+
+    QGraphicsItem::hoverLeaveEvent(event);
+}
+
+void Node::paint(QPainter * painter,
+    const QStyleOptionGraphicsItem * option, QWidget * widget)
+{
+    Q_UNUSED(widget);
+    Q_UNUSED(option);
+
+    painter->save();
+
+    // Background
+    painter->fillRect(
+        -size().width() / 2, -size().height() / 2,
+        size().width(), size().height(),
+        QBrush(QColor(255, 255, 255, 255)));
+
+    painter->restore();
+}
+
+void Node::setHandlesVisible(bool visible)
+{
+    for (auto handle : m_handles)
+    {
+        handle->setVisible(visible);
+    }
+}
+
+void Node::setLocation(QPointF newLocation)
+{
+    NodeBase::setLocation(newLocation);
+    setPos(newLocation);
+
+    for (auto edge : m_edges)
+    {
+        edge->updateLine();
+    }
+}

src/editor/node.hpp

@@ -0,0 +1,70 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef NODE_HPP
+#define NODE_HPP
+
+#include <QGraphicsItem>
+#include <vector>
+
+#include "nodebase.hpp"
+#include "edge.hpp"
+
+class NodeHandle;
+
+//! Freely placeable target node.
+class Node : public QGraphicsItem, public NodeBase
+{
+public:
+
+    //! Constructor.
+    Node();
+
+    //! Copy constructor.
+    Node(const Node & other);
+
+    virtual void addEdge(EdgePtr edge);
+
+    virtual QRectF boundingRect () const override;
+
+    using NodePtr = std::shared_ptr<Node>;
+    virtual EdgePtr createAndAddEdge(NodePtr targetNode);
+
+    virtual void paint(QPainter * painter,
+        const QStyleOptionGraphicsItem * option, QWidget * widget = nullptr) override;
+
+    //! Sets the Node and QGraphicsItem locations.
+    virtual void setLocation(QPointF newLocation);
+
+    virtual void hoverEnterEvent(QGraphicsSceneHoverEvent * event) override;
+
+    virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent * event) override;
+
+private:
+
+    void createHandles();
+
+    void setHandlesVisible(bool visible);
+
+    std::vector<NodeHandle *> m_handles;
+
+    std::vector<EdgePtr> m_edges;
+
+    const int m_handleRadius = 32;
+};
+
+using NodePtr = std::shared_ptr<Node>;
+
+#endif // NODE_HPP

src/editor/nodebase.cpp

@@ -0,0 +1,54 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "nodebase.hpp"
+
+NodeBase::NodeBase()
+{
+}
+
+QSize NodeBase::size() const
+{
+    return m_size;
+}
+
+void NodeBase::setSize(QSize size)
+{
+    m_size = size;
+}
+
+QPointF NodeBase::location() const
+{
+    return m_location;
+}
+
+void NodeBase::setLocation(QPointF newLocation)
+{
+    m_location = newLocation;
+}
+
+int NodeBase::index() const
+{
+    return m_index;
+}
+
+void NodeBase::setIndex(int index)
+{
+    m_index = index;
+}
+
+NodeBase::~NodeBase()
+{
+}

src/editor/nodebase.hpp

@@ -0,0 +1,64 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef NODEBASE_HPP
+#define NODEBASE_HPP
+
+#include <QSizeF>
+#include <QString>
+#include <QPointF>
+
+#include <memory>
+#include <vector>
+
+//! Base class for freely placeable target nodes in the editor.
+class NodeBase
+{
+public:
+
+    using NodeBasePtr = std::shared_ptr<NodeBase>;
+
+    NodeBase();
+
+    NodeBase(NodeBase & other) = delete;
+
+    NodeBase & operator= (NodeBase & other) = delete;
+
+    virtual ~NodeBase();
+
+    virtual QPointF location() const;
+
+    virtual void setLocation(QPointF newLocation);
+
+    virtual QSize size() const;
+
+    virtual void setSize(QSize size);
+
+    virtual int index() const;
+
+    virtual void setIndex(int index);
+
+private:
+
+    QPointF m_location;
+
+    QSize m_size;
+
+    int m_index = -1;
+};
+
+using NodeBasePtr = std::shared_ptr<NodeBase>;
+
+#endif // NODEBASE_HPP

src/editor/nodehandle.cpp

@@ -0,0 +1,81 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "nodehandle.hpp"
+
+#include <QPainter>
+#include <QPen>
+
+NodeHandle::NodeHandle(int radius)
+    : m_radius(radius)
+    , m_sizeAnimation(this, "size")
+{
+    m_sizeAnimation.setDuration(125);
+
+    QGraphicsItem::setVisible(false);
+}
+
+QRectF NodeHandle::boundingRect() const
+{
+    const int margin = 1;
+    return QRectF(-size().width() / 2 - margin, - size().height() / 2 - margin, size().width() + margin * 2, size().height() + margin * 2);
+}
+
+void NodeHandle::paint(QPainter * painter,
+    const QStyleOptionGraphicsItem * option, QWidget * widget)
+{
+    Q_UNUSED(widget);
+    Q_UNUSED(option);
+
+    painter->save();
+    painter->drawPixmap(-size().width() / 2, -size().height() / 2, QPixmap(":/add.png").scaled(size().width(), size().height()));
+    painter->restore();
+}
+
+QSize NodeHandle::size() const
+{
+    return m_size;
+}
+
+void NodeHandle::setSize(const QSize & size)
+{
+    prepareGeometryChange();
+
+    m_size = size;
+}
+
+void NodeHandle::setVisible(bool visible)
+{
+    static const QSize away(0, 0);
+    static const QSize full(m_radius * 2, m_radius * 2);
+
+    if (visible)
+    {
+        QGraphicsItem::setVisible(true);
+        m_sizeAnimation.setStartValue(away);
+        m_sizeAnimation.setEndValue(full);
+    }
+    else
+    {
+        m_sizeAnimation.setStartValue(full);
+        m_sizeAnimation.setEndValue(away);
+    }
+
+    m_sizeAnimation.start();
+}
+
+NodeHandle::~NodeHandle()
+{
+}

src/editor/nodehandle.hpp

@@ -0,0 +1,54 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef NODEHANDLE_HPP
+#define NODEHANDLE_HPP
+
+#include <QGraphicsItem>
+#include <QPropertyAnimation>
+
+class Node;
+
+class NodeHandle : public QObject, public QGraphicsItem
+{
+    Q_OBJECT
+    Q_PROPERTY(QSize size READ size WRITE setSize)
+
+public:
+
+    explicit NodeHandle(int radius);
+
+    virtual ~NodeHandle();
+
+    virtual QRectF boundingRect () const override;
+
+    virtual void paint(QPainter * painter,
+        const QStyleOptionGraphicsItem * option, QWidget * widget = nullptr) override;
+
+    QSize size() const;
+    void setSize(const QSize & size);
+
+    void setVisible(bool visible);
+
+private:
+
+    int m_radius;
+
+    QPropertyAnimation m_sizeAnimation;
+
+    QSize m_size;
+};
+
+#endif // NODEHANDLE_HPP

src/editor/undostack.cpp

@@ -0,0 +1,83 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#include "undostack.hpp"
+
+UndoStack::UndoStack(unsigned int maxHistorySize)
+    : m_maxHistorySize(maxHistorySize)
+{
+}
+
+void UndoStack::pushUndoPoint(MindMapDataPtr mindMapData)
+{
+    auto copyData = new MindMapData(*mindMapData.get());
+    m_undoStack.push_back(MindMapDataPtr(copyData));
+
+    if (m_undoStack.size() > m_maxHistorySize)
+    {
+        m_undoStack.pop_front();
+    }
+}
+
+void UndoStack::pushRedoPoint(MindMapDataPtr mindMapData)
+{
+    auto copyData = new MindMapData(*mindMapData.get());
+    m_redoStack.push_back(MindMapDataPtr(copyData));
+
+    if (m_redoStack.size() > m_maxHistorySize)
+    {
+        m_redoStack.pop_front();
+    }
+}
+
+void UndoStack::clear()
+{
+    m_undoStack.clear();
+    m_redoStack.clear();
+}
+
+bool UndoStack::isUndoable() const
+{
+    return m_undoStack.size() > 0;
+}
+
+MindMapDataPtr UndoStack::undo()
+{
+    if (isUndoable())
+    {
+        auto head = m_undoStack.back();
+        m_undoStack.pop_back();
+        return head;
+    }
+
+    return MindMapDataPtr();
+}
+
+bool UndoStack::isRedoable() const
+{
+    return m_redoStack.size() > 0;
+}
+
+MindMapDataPtr UndoStack::redo()
+{
+    if (isRedoable())
+    {
+        auto head = m_redoStack.back();
+        m_redoStack.pop_back();
+        return head;
+    }
+
+    return MindMapDataPtr();
+}

src/editor/undostack.hpp

@@ -0,0 +1,54 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef UNDOSTACK_HPP
+#define UNDOSTACK_HPP
+
+#include "mindmapdata.hpp"
+
+#include <list>
+
+class UndoStack
+{
+public:
+
+    UndoStack(unsigned int maxHistorySize = 100);
+
+    void pushUndoPoint(MindMapDataPtr mindMapData);
+
+    void pushRedoPoint(MindMapDataPtr mindMapData);
+
+    void clear();
+
+    bool isUndoable() const;
+
+    MindMapDataPtr undo();
+
+    bool isRedoable() const;
+
+    MindMapDataPtr redo();
+
+private:
+
+    using MindMapDataVector = std::list<MindMapDataPtr>;
+
+    MindMapDataVector m_undoStack;
+
+    MindMapDataVector m_redoStack;
+
+    unsigned int m_maxHistorySize;
+};
+
+#endif // UNDOSTACK_HPP

src/editor/userexception.hpp

@@ -0,0 +1,31 @@
+// This file is part of Dementia.
+// Copyright (C) 2018 Jussi Lind <jussi.lind@iki.fi>
+//
+// Dementia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// Dementia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Dementia. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef USEREXCEPTION_HPP
+#define USEREXCEPTION_HPP
+
+#include <stdexcept>
+#include <string>
+
+class UserException : public std::runtime_error
+{
+public:
+    explicit UserException(std::string msg)
+        : runtime_error(msg)
+    {
+    }
+};
+
+#endif // USEREXCEPTION_HPP