New features

The pre-release of v1.0.2 has been released. And Changlog.md under the dev-v7 branch will record all the new features of the version starting from v1.01

1.0.2

• Auto-save function only keeps three stored files per page
• Support event function modification
• Completed all event functions
• Add test cases for all events
• Support for reading relative path files (The configuration file and the picture need to be in the same directory)

1.0.1

• Added auto save file function
• When the simulation stops running, widgets are restored to their original state immediately
• Added btn, checkbox, ddlist, img, imgbtn and label event functions
• undo/redo supports multiple pages
• Label adds the event function of dynamically displaying time

Pre Release

• Windows: builded by msvc201564 and msvc201732
• Macos: builder by Clang64
• ubuntu20: builder by gcc8_64

LVGL Simulator

program: https://github.com/mrQzs/Lvgl_Simulator

• support msvc 32/64 and mingw 32/64

• Put the code file generated by lvglbuilder in the testcode folder

• Just load the source code and modify the resolution in the lvconf.h

  

Move Animation

• If the value is empty, its value is not changed

Event&Style select

• arc bar slider switch screen

  

New version

Now, the dev-7 branch based on lvgl7.11.0 has completed most of the todo list, so everyone can switch to the dev-7 branch for testing.

LVGLBuilder

GUI Builder for littlevgl release 6.0+ written in C++ and using LVGL for preview of the created GUI and Qt for the higher-level user interface for drag and drop of widgets as well as editing of properties and styles.

Prerequisites

• Qt 5.11+ - The Qt framework
• C++11
• LVGL 6.1 (included in source since a few adaptions are applied)

Tested:

• Windows 10 + MSVC 2019 + Qt 5.15.1
• Windows 10 + MinGW 8.1 + Qt 5.15.2
• Ubuntu 18.04.4 + Qt 5.14.2
• Ubuntu 20.04 + Qt 5.12.8

Build

Building with console:

• Move to the cloned LVGLBuild directory
• Run qmake LVGLBuilder.pro
• For gcc (Mac/Linux): make
• For mingw: mingw32-make
• For windows: jom (make sure that jom.exe is in the environment path)

Building with QtCreator:

• Download Qt from https://www.qt.io/download-open-source
• Install Qt with QtCreator
• Open the LVGLBuilder.pro file with QtCreator
• Click build project
• There are no special requironments, therefor it should build with QtCreator out of the box.

Usage

• Create a new project and select the screen resolution
• Simply drag and drop widgets from the list into the canvas
• Widgets can be moved with the arrow keys or by dragging
• Lock widgets to prevent editing (Unlock via right click context menu)
• Drop a widget into another widget to set the parent
• Save and load a project as json file using the menu or tool buttons
• Mark widgets within the property editor as accessable via the c header
• Export the project as c code using the menu (File -> Export -> C Project ...)

ToDo General

• Saving GUI as JSON
• Loading GUI as JSON
• Export C-project
• Change style of single widgets
• Support different display formats
• Fix object inspector (insertion and deletion of widgets)
• Fix absolute and relative positions of widgets
• Undo and redo
• Default values for widgets
• Support multiple screens
• Dialog for changing keyboard layout
• Preview for widgets
• Icons for widgets
• Support for lvgl 7.x

Wishlist

• C code driver generator (Touch, Buttons, Displays for µC)

ToDo Widgets

• Arc (lv_arc)
• Bar (lv_bar)
• Button (lv_btn)
• Button matrix (lv_btnm)
• Calendar (lv_calendar)
• Canvas (lv_canvas)
• Checkbox (lv_cb)
• Chart (lv_chart)
• Container (lv_cont)
• Color picker (lv_cpicker)
• Drop-down list (lv_ddlist)
• Gauge (lv_gauge)
• Image (lv_img)
• Image button (lv_imgbtn)
• Keyboard (lv_kb)
• Label (lv_label)
• LED (lv_led)
• Line (lv_line)
• List (lv_list)
• Line meter (lv_lmeter)
• Message box (lv_mbox)
• Page (lv_page)
• Preloader (lv_preload)
• Roller (lv_roller)
• Slider (lv_slider)
• Spinbox (lv_spinbox)
• Switch (lv_sw)
• Table (lv_table)
• Tabview (lv_tabview)
• Text area (lv_ta)
• Tile view (lv_tileview)
• Window (lv_win)