Add beginning of NxWM NxConsole application

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4681 42af7a65-404d-4744-a932-0658087f49c3

README.txt

@@ -49,3 +49,43 @@ o Many Graphic Objects
 Note:  Many of the fundamental classed in NxWidgets derive from the Antony
 Dzeryn's "Woopsi" project: http://woopsi.org/ which also has a BSD style
 license.  See the COPYING file for details.
+
+Directory Structure
+===================
+
+libnxwidgets
+
+  The source code, header files, and build environment for NxWidgets is
+  provided in this directory. 
+
+UnitTests
+
+  Provides a collection of unit-level tests for many of the individual
+  widgets provided by libnxwidgets.
+
+nxwm
+
+  This directory holds a tiny desktop for small embedded devices with a
+  touchscreen,. NxWM.  NxWM is truly multiple window manager but only one
+  window is displayed at a time.  This simplification helps performance on
+  LCD based products (in the same way that a tiled window manager helps)
+  and also makes the best use of small displays.  It is awkward from a
+  human factors point-of-view trying to manage multiple windows on a
+  small display.
+
+  The window manager consists of a task bar with icons representing the
+  running tasks.  If you touch the tasks icon, it comes to the top.  Each
+  window has a toolbar with (1) a title, (2) a minimize button, and (3) a
+  stop application button using the standard icons for these things.
+
+  There is always a start window that is available in the task bar.  When
+  you touch the start window icon, it brings up the start window containing
+  icons representing all of the available applications.  If you touch an
+  icon in the start window, it will be started and added to the task bar.
+
+  There is a base class that defines an add-on application and an
+  interface that supports incorporation of new application.  The only
+  application that is provided is NxConsole.  This is an  NSH session
+  running in a window.  I should be able to select the NX icon in the start
+  menu and create as many NSH sessions in windows as I want. (keybard input
+  still comes through serial).

UnitTests/nxwm/main.cxx

@@ -38,6 +38,7 @@
 /////////////////////////////////////////////////////////////////////////////
 
 #include <nuttx/config.h>
+#include <nuttx/arch.h>
 
 #include "ctaskbar.hxx"
 #include "cstartwindow.hxx"
@@ -90,6 +91,12 @@ extern "C" int MAIN_NAME(int argc, char *argv[]);
 
 int MAIN_NAME(int argc, char *argv[])
 {
+  // Call all C++ static constructors
+
+#if defined(CONFIG_HAVE_CXX) && defined(CONFIG_HAVE_CXXINITIALIZE)
+  up_cxxinitialize();
+#endif
+
   // Create an instance of the Task Bar.
   //
   // The general sequence for initializing the task bar is:

nxwm/include/cnxconsole.hxx

@@ -42,7 +42,13 @@
  
 #include <nuttx/config.h>
 
+#include <sys/types.h>
+#include <nuttx/nx/nxtk.h>
+#include <nuttx/nx/nxconsole.h>
+
 #include "iapplication.hxx"
+#include "capplicationwindow.hxx"
+#include "ctaskbar.hxx"
 
 /****************************************************************************
  * Pre-Processor Definitions
@@ -56,37 +62,110 @@
 
 namespace NxWM
 {
+  /**
+   * One time NSH initialization. This function must be called exactly
+   * once during the boot-up sequence to initialize the NSH library.
+   *
+   * @return True on successful initialization
+   */
+
+  bool nshlibInitialize(void);
+
   /**
    * This class implements the NxConsole application.
    */
 
-  class CNxConsole : public IApplication
+  class CNxConsole : public IApplication, private IApplicationCallback
   {
-    protected:
+  protected:
-      /**
+    CTaskbar            *m_taskbar;  /**< Reference to the "parent" taskbar */
-       * CNxConsole destructor
+    CApplicationWindow  *m_window;   /**< Reference to the application window */
-       */
+    NXCONSOLE            m_nxcon;    /**< NxConsole handle */
+    pid_t                m_pid;      /**< Task ID of the NxConsole thread */
 
-      ~CNxConsole(void);
+    /**
+     * Called when the window minimize button is pressed.
+     */
 
-    public:
+    void minimize(void);
-      /**
-       * CNxConsole constructor
-       *
-       * @param window.  The application window
-       */
 
-      CNxConsole(NXWidgets::INxWindow *window);
+    /**
+     * Called when the window minimize close is pressed.
+     */
 
-      /**
+    void close(void);
-       * Get the icon associated with the application
-       *
-       * @return An instance if IBitmap that may be used to rend the
-       *   application's icon.  This is an new IBitmap instance that must
-       *   be deleted by the caller when it is no long needed.
-       */
 
-      NXWidgets::IBitmap *getIcon(void);
+    /**
+     * CNxConsole destructor
+     */
+
+    ~CNxConsole(void);
+
+  public:
+    /**
+     * CNxConsole constructor
+     *
+     * @param window.  The application window
+     *
+     * @param taskbar.  A pointer to the parent task bar instance
+     * @param window.  The window to be used by this application.
+     */
+
+    CNxConsole(CTaskbar *taskbar, CApplicationWindow *window);
+
+    /**
+     * Each implementation of IApplication must provide a method to recover
+     * the contained CApplicationWindow instance.
+     */
+
+    CApplicationWindow *getWindow(void) const;
+
+    /**
+     * Get the icon associated with the application
+     *
+     * @return An instance if IBitmap that may be used to rend the
+     *   application's icon.  This is an new IBitmap instance that must
+     *   be deleted by the caller when it is no long needed.
+     */
+
+    NXWidgets::IBitmap *getIcon(void);
+
+    /**
+     * Get the name string associated with the application
+     *
+     * @return A copy if CNxString that contains the name of the application.
+     */
+
+    NXWidgets::CNxString getName(void);
+
+    /**
+     * Start the application (perhaps in the minimized state).
+     *
+     * @return True if the application was successfully started.
+     */
+
+    bool run(void);
+
+    /**
+     * Stop the application.
+     */
+
+    void stop(void);
+
+    /**
+     * The application window is hidden (either it is minimized or it is
+     * maximized, but not at the top of the hierarchy
+     */
+
+    void hide(void);
+
+    /**
+     * Redraw the entire window.  The application has been maximized or
+     * otherwise moved to the top of the hierarchy.  This method is call from
+     * CTaskbar when the application window must be displayed
+     */
+
+    void redraw(void);
   };
 }
 #endif // __cplusplus

nxwm/include/cstartwindow.hxx

@@ -160,9 +160,11 @@ namespace NxWM
 
     /**
      * Start the application.
+     *
+     * @return True if the application was successfully started.
      */
 
-    void run(void);
+    bool run(void);
 
     /**
      * Stop the application.

nxwm/include/iapplication.hxx

@@ -99,10 +99,12 @@ namespace NxWM
       virtual NXWidgets::CNxString getName(void) = 0;
 
       /**
-       * Start the application (pehaps in the minimized state).
+       * Start the application (perhaps in the minimized state).
+       *
+       * @return True if the application was successfully started.
        */
 
-      virtual void run(void) = 0;
+      virtual bool run(void) = 0;
 
       /**
        * Stop the application.

nxwm/include/nxwmconfig.hxx

@@ -198,4 +198,26 @@
 #  define CONFIG_NXWM_STARTWINDOW_HSPACING (2)
 #endif
 
+/* NxConsole Window *********************************************************/
+
+#ifndef CONFIG_NXWM_NXCONSOLE_PRIO
+#  define CONFIG_NXWM_NXCONSOLE_PRIO  SCHED_PRIORITY_DEFAULT
+#endif
+
+#ifndef CONFIG_NXWM_NXCONSOLE_STACKSIZE
+#  define CONFIG_NXWM_NXCONSOLE_STACKSIZE  2048
+#endif
+
+#ifndef CONFIG_NXWM_NXCONSOLE_WCOLOR
+#  define CONFIG_NXWM_NXCONSOLE_WCOLOR  MKRGB(192,192,192)
+#endif
+
+#ifndef CONFIG_NXWM_NXCONSOLE_FONTCOLOR
+#  define CONFIG_NXWM_NXCONSOLE_FONTCOLOR  MKRGB(0,0,0)
+#endif
+
+#ifndef CONFIG_NXWM_NXCONSOLE_FONTID
+#  define CONFIG_NXWM_NXCONSOLE_FONTID  CONFIG_NXWM_DEFAULT_FONTID
+#endif
+
 #endif // __INCLUDE_NXWMCONFIG_HXX

nxwm/src/cnxconsole.cxx

@@ -39,6 +39,19 @@
  
 #include <nuttx/config.h>
 
+#include <cstdio>
+#include <cstdlib>
+#include <ctime>
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <semaphore.h>
+#include <sched.h>
+
+#include <apps/nsh.h>
+
+#include "cwidgetcontrol.hxx"
+
 #include "nxwmconfig.hxx"
 #include "cnxconsole.hxx"
 #include "nxwmglyphs.hxx"
@@ -47,6 +60,125 @@
  * Pre-Processor Definitions
  ********************************************************************************************/
 
+/********************************************************************************************
+ * Private Types
+ ********************************************************************************************/
+
+namespace NxWM
+{
+  /**
+   * This structure is used to pass start up parameters to nxcon_task and to assure the
+   * the NxConsole is successfully started.
+   */
+
+  struct nxcon_task_s
+  {
+    sem_t      sem;     // Sem that will be posted when the task is successfully initialized
+    NXTKWINDOW hwnd;    // Window handle
+    NXCONSOLE  nxcon;   // NxConsole handle
+    int        minor;   // Next device minor number
+    bool       result;  // True if successfully initialized
+  };
+
+/********************************************************************************************
+ * Private Data
+ ********************************************************************************************/
+
+  /**
+   * This global data structure is used to pass start parameters to nxcon_task and to
+   * assure that the NxConsole is successfully started.
+   */
+
+  static struct nxcon_task_s g_nxconvars;
+
+/********************************************************************************************
+ * Private Functions
+ ********************************************************************************************/
+
+  /**
+   * This is the NxConsole task.  This function first redirects output to the console window.
+   */
+
+  static int nxcon_task(int argc, char *argv[])
+  {
+    // Configure NxConsole
+
+    struct nxcon_window_s wndo;      /* Describes the window */
+    wndo.wcolor[0] = CONFIG_NXWM_NXCONSOLE_WCOLOR;
+    wndo.fcolor[0] = CONFIG_NXWM_NXCONSOLE_FONTCOLOR;
+    wndo.fontid    = CONFIG_NXWM_NXCONSOLE_FONTID;
+
+    // To stop compiler complaining about "jump to label crosses initialization of 'int fd'
+
+    int fd = -1;
+
+    // Use the window handle to create the NX console
+
+    g_nxconvars.nxcon = nxtk_register(g_nxconvars.hwnd, &wndo, g_nxconvars.minor);
+    if (!g_nxconvars.nxcon)
+      {
+        goto errout;
+      }
+
+    // Construct the driver name using this minor number
+
+    char devname[32];
+    snprintf(devname, 32, "/dev/nxcon%d", g_nxconvars.minor);
+
+    // Increment the minor number while it is protect by the semaphore
+
+    g_nxconvars.minor++;
+
+    // Open the NxConsole driver
+
+    fd = open(devname, O_WRONLY);
+    if (fd < 0)
+      {
+        goto errout_with_nxcon;
+      }
+
+    // Now re-direct stdout and stderr so that they use the NX console driver.
+    // Note that stdin is retained (file descriptor 0, probably the the serial console).
+
+    (void)fflush(stdout);
+    (void)fflush(stderr);
+
+    (void)fclose(stdout);
+    (void)fclose(stderr);
+
+    (void)dup2(fd, 1);
+    (void)dup2(fd, 2);
+
+    // And we can close our original driver file descriptor
+
+    close(fd);
+
+    // Inform the parent thread that we successfully initialize
+
+    g_nxconvars.result = true;
+    sem_post(&g_nxconvars.sem);
+
+    // Run the NSH console
+
+#ifdef CONFIG_NSH_CONSOLE
+  (void)nsh_consolemain(argc, argv);
+#endif
+
+    // We get here if console exits
+#warning "Missing logic"
+    return EXIT_SUCCESS;
+
+  errout_with_nxcon:
+    nxcon_unregister(g_nxconvars.nxcon);
+
+  errout:
+    g_nxconvars.nxcon  = 0;
+    g_nxconvars.result = false;
+    sem_post(&g_nxconvars.sem);
+    return EXIT_FAILURE;
+  }
+}
+
 /********************************************************************************************
  * CNxConsole Method Implementations
  ********************************************************************************************/
@@ -59,8 +191,80 @@ using namespace NxWM;
  * @param window.  The application window
  */
 
-CNxConsole::CNxConsole(NXWidgets::INxWindow *window)
+CNxConsole::CNxConsole(CTaskbar *taskbar, CApplicationWindow *window)
 {
+  // Save the constructor data
+
+  m_taskbar = taskbar;
+  m_window  = window;
+
+  // The NxConsole is not runing
+
+  m_pid    = -1;
+  m_nxcon   = 0;
+
+  // Add our callbacks to the application window
+
+  window->registerCallbacks(static_cast<IApplicationCallback *>(this));
+}
+
+/**
+ * CNxConsole destructor
+ *
+ * @param window.  The application window
+ */
+
+CNxConsole::~CNxConsole(void)
+{
+  // Although we didn't create it, we are responsible for deleting the
+  // application window
+
+  if (m_window)
+    {
+      delete m_window;
+    }
+}
+
+/**
+ * One time NSH initialization. This function must be called exactly
+ * once during the boot-up sequence to initialize the NSH library.
+ *
+ * @return True on successful initialization
+ */
+
+bool nshlibInitialize(void)
+{
+  // Initialize the global data structure
+
+  sem_init(&g_nxconvars.sem, 0, 0);
+
+  // Initialize the NSH library
+
+  nsh_initialize();
+
+  // If the Telnet console is selected as a front-end, then start the
+  // Telnet daemon.
+
+#ifdef CONFIG_NSH_TELNET
+  int ret = nsh_telnetstart();
+  if (ret < 0)
+    {
+      // The daemon is NOT running!
+
+      return false;
+   }
+#endif
+  return true;
+}
+
+/**
+ * Each implementation of IApplication must provide a method to recover
+ * the contained CApplicationWindow instance.
+ */
+
+CApplicationWindow *CNxConsole::getWindow(void) const
+{
+  return m_window;
 }
 
 /**
@@ -73,7 +277,169 @@ CNxConsole::CNxConsole(NXWidgets::INxWindow *window)
 
 NXWidgets::IBitmap *CNxConsole::getIcon(void)
 {
-  NXWidgets::CRlePaletteBitmap *bitmap = new NXWidgets::CRlePaletteBitmap(&g_nshBitmap);
+  NXWidgets::CRlePaletteBitmap *bitmap =
-  return static_cast<NXWidgets::IBitmap *>(bitmap);
+    new NXWidgets::CRlePaletteBitmap(&g_nshBitmap);
+
+  return bitmap;
 }
 
+/**
+ * Get the name string associated with the application
+ *
+ * @return A copy if CNxString that contains the name of the application.
+ */
+
+NXWidgets::CNxString CNxConsole::getName(void)
+{
+  return NXWidgets::CNxString("NuttShell");
+}
+
+/**
+ * Start the application (perhaps in the minimized state).
+ *
+ * @return True if the application was successfully started.
+ */
+
+bool CNxConsole::run(void)
+{
+  // Some sanity checking
+
+  if (m_pid >= 0 || m_nxcon != 0)
+    {
+      return false;
+    }
+
+  // Recover the NXTK window instance contained in the application window
+
+  NXWidgets::CNxTkWindow *window = m_window->getWindow();
+
+  // Get the widget control associated with the NXTK window
+
+  NXWidgets::CWidgetControl *control =  window->getWidgetControl();
+
+  // Get the window handle from the widget control
+
+  g_nxconvars.hwnd = control->getWindowHandle();
+
+  // Start the NxConsole task
+
+  g_nxconvars.result = false;
+  g_nxconvars.nxcon  = 0;
+
+  sched_lock();
+  m_pid = TASK_CREATE("NxConsole", CONFIG_NXWM_NXCONSOLE_PRIO,
+                      CONFIG_NXWM_NXCONSOLE_STACKSIZE, nxcon_task,
+                      (FAR const char **)0);
+
+  // Did we successfully start the NxConsole task?
+
+  if (m_pid < 0)
+    {
+      return false;
+    }
+
+  // Wait for up to two second for the task to initialize
+
+  struct timespec abstime;
+  clock_gettime(CLOCK_REALTIME, &abstime);
+  abstime.tv_sec += 2;
+
+  int ret = sem_timedwait(&g_nxconvars.sem, &abstime);
+  if (ret == OK && g_nxconvars.result)
+    {
+      // Save the handle to use in the stop method
+
+      m_nxcon = g_nxconvars.nxcon;
+      return true;
+    }
+  else
+    {
+      // Stop the application
+
+      stop();
+      return false;
+    }
+}
+
+/**
+ * Stop the application.
+ */
+
+void CNxConsole::stop(void)
+{
+  // Delete the NxConsole task if it is still running (this could strand resources)
+
+  if (m_pid >= 0)
+    {
+      task_delete(m_pid);
+      m_pid = -1;
+    }
+ 
+  // Destroy the NX console device
+ 
+  if (m_nxcon)
+    {
+      nxcon_unregister(m_nxcon);
+      m_nxcon = 0;
+    }
+}
+
+/**
+ * The application window is hidden (either it is minimized or it is
+ * maximized, but not at the top of the hierarchy
+ */
+
+void CNxConsole::hide(void)
+{
+  // Disable drawing and events
+#warning "Missing logic"
+}
+
+/**
+ * Redraw the entire window.  The application has been maximized or
+ * otherwise moved to the top of the hierarchy.  This method is call from
+ * CTaskbar when the application window must be displayed
+ */
+
+void CNxConsole::redraw(void)
+{
+  // Recover the NXTK window instance contained in the application window
+
+  NXWidgets::CNxTkWindow *window = m_window->getWindow();
+
+  // Get the size of the window
+
+  struct nxgl_size_s windowSize;
+  (void)window->getSize(&windowSize);
+
+  // Redraw the entire NxConsole window
+
+  struct nxgl_rect_s rect;
+  rect.pt1.x = 0;
+  rect.pt1.y = 0;
+  rect.pt2.x = windowSize.w - 1;
+  rect.pt2.y = windowSize.h - 1;
+
+  nxcon_redraw(m_nxcon, &rect, false);
+}
+
+/**
+ * Called when the window minimize button is pressed.
+ */
+
+void CNxConsole::minimize(void)
+{
+  m_taskbar->minimizeApplication(static_cast<IApplication*>(this));
+}
+
+/**
+ * Called when the window minimize close is pressed.
+ */
+
+void CNxConsole::close(void)
+{
+  m_taskbar->stopApplication(static_cast<IApplication*>(this));
+}
+
+
+

nxwm/src/cstartwindow.cxx

@@ -70,7 +70,7 @@ CStartWindow::CStartWindow(CTaskbar *taskbar, CApplicationWindow *window)
   m_taskbar = taskbar;
   m_window  = window;
 
-  // Add out callbacks to the application window
+  // Add our callbacks to the application window
 
   window->registerCallbacks(static_cast<IApplicationCallback *>(this));
 }
@@ -133,11 +133,15 @@ NXWidgets::CNxString CStartWindow::getName(void)
 
 /**
  * Start the application.
+ *
+ * @return True if the application was successfully started.
  */
 
-void CStartWindow::run(void)
+bool CStartWindow::run(void)
 {
   // We don't have a thread of execution.  We only respond to button presses
+
+  return true;
 }
 
 /**

nxwm/src/ctaskbar.cxx

@@ -267,7 +267,12 @@ bool CTaskbar::startApplication(IApplication *app, bool minimized)
 
   // Then start the application (whatever that means)
 
-  app->run();
+  if (!app->run())
+    {
+      stopApplication(app);
+      return false;
+    }
+
   return true;
 }