Fix STR#2641: true fullscreen windows that cover all their screen including menu bar, task bar, dock.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@9299 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

5 files changed, 32 insertions, 5 deletions

diff --git a/FL/Enumerations.H b/FL/Enumerations.H
index f0d24aca4..32825ecd0 100644
--- a/FL/Enumerations.H
+++ b/FL/Enumerations.H
@@ -3,7 +3,7 @@
 //
 // Enumerations for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 1998-2011 by Bill Spitzak and others.
+// Copyright 1998-2012 by Bill Spitzak and others.
 //
 // This library is free software. Distribution and use rights are outlined in
 // the file "COPYING" which should have been included with this file.  If this
@@ -293,7 +293,10 @@ enum Fl_Event {	// events
   /** The screen configuration (number, positions) was changed.
    Use Fl::add_handler() to be notified of this event.
    */
-  FL_SCREEN_CONFIGURATION_CHANGED = 24
+  FL_SCREEN_CONFIGURATION_CHANGED = 24,
+  /** The fullscreen state of the window has changed
+   */
+   FL_FULLSCREEN         = 25
 };
 
 /** \name When Conditions */
diff --git a/FL/Fl_Widget.H b/FL/Fl_Widget.H
index 7e7ed615a..27e6801c2 100644
--- a/FL/Fl_Widget.H
+++ b/FL/Fl_Widget.H
@@ -3,7 +3,7 @@
 //
 // Widget header file for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 1998-2010 by Bill Spitzak and others.
+// Copyright 1998-2012 by Bill Spitzak and others.
 //
 // This library is free software. Distribution and use rights are outlined in
 // the file "COPYING" which should have been included with this file.  If this
@@ -170,6 +170,7 @@ protected:
         NO_OVERLAY      = 1<<15,  ///< window not using a hardware overlay plane (Fl_Menu_Window)
         GROUP_RELATIVE  = 1<<16,  ///< position this widget relative to the parent group, not to the window
         COPIED_TOOLTIP  = 1<<17,  ///< the widget tooltip is internally copied, its destruction is handled by the widget
+        FULLSCREEN      = 1<<18,  ///< a fullscreen window (Fl_Window)
         // (space for more flags)
         USERFLAG3       = 1<<29,  ///< reserved for 3rd party extensions
         USERFLAG2       = 1<<30,  ///< reserved for 3rd party extensions
@@ -843,6 +844,9 @@ public:
   static unsigned int label_shortcut(const char *t);
   /* Internal use only. */
   static int test_shortcut(const char*, const bool require_alt = false);
+  /* Internal use only. */
+  void _set_fullscreen() {flags_ |= FULLSCREEN;}
+  void _clear_fullscreen() {flags_ &= ~FULLSCREEN;}
 
   /** Checks if w is a child of this widget.
       \param[in] w potential child widget
diff --git a/FL/Fl_Window.H b/FL/Fl_Window.H
index b6717f2e1..624e4b733 100644
--- a/FL/Fl_Window.H
+++ b/FL/Fl_Window.H
@@ -3,7 +3,7 @@
 //
 // Window header file for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 1998-2010 by Bill Spitzak and others.
+// Copyright 1998-2012 by Bill Spitzak and others.
 //
 // This library is free software. Distribution and use rights are outlined in
 // the file "COPYING" which should have been included with this file.  If this
@@ -49,6 +49,10 @@ class Fl_X;
 class FL_EXPORT Fl_Window : public Fl_Group {
 
   static char *default_xclass_;
+#if FLTK_ABI_VERSION < 10302
+  static // when these members are static, ABI compatibility with 1.3.0 is respected
+#endif
+  int no_fullscreen_x, no_fullscreen_y, no_fullscreen_w, no_fullscreen_h;
 
   friend class Fl_X;
   Fl_X *i; // points at the system-specific stuff
@@ -65,6 +69,8 @@ class FL_EXPORT Fl_Window : public Fl_Group {
   Fl_Color cursor_fg, cursor_bg;
   void size_range_();
   void _Fl_Window(); // constructor innards
+  void fullscreen_x(); // platform-specific part of sending a window to full screen
+  void fullscreen_off_x(int X, int Y, int W, int H);// platform-specific part of leaving full screen
 
   // unimplemented copy ctor and assignment operator
   Fl_Window(const Fl_Window&);
@@ -375,15 +381,27 @@ public:
   /**
     Makes the window completely fill the screen, without any window
     manager border visible.  You must use fullscreen_off() to undo
-    this. This may not work with all window managers.
+    this. 
+
+    \note On some platforms, this can result in the keyboard being
+    grabbed. The window may also be recreated, meaning hide() and
+    show() will be called.
   */
   void fullscreen();
   /**
+    Turns off any side effects of fullscreen()
+  */
+  void fullscreen_off();
+  /**
     Turns off any side effects of fullscreen() and does 
     resize(x,y,w,h).
   */
   void fullscreen_off(int,int,int,int);
   /**
+    Returns non zero if FULLSCREEN flag is set, 0 otherwise. 
+  */
+  unsigned int fullscreen_active() const { return flags() & FULLSCREEN; }
+  /**
     Iconifies the window.  If you call this when shown() is false
     it will show() it as an icon.  If the window is already
     iconified this does nothing.
diff --git a/FL/names.h b/FL/names.h
index 09000c47e..5f653791e 100644
--- a/FL/names.h
+++ b/FL/names.h
@@ -67,6 +67,7 @@ const char * const fl_eventnames[] =
   "FL_DND_LEAVE",
   "FL_DND_RELEASE",
   "FL_SCREEN_CONFIGURATION_CHANGED",
+  "FL_FULLSCREEN"
 };
 
 /**
diff --git a/FL/x.H b/FL/x.H
index 189c8050a..110f92d38 100644
--- a/FL/x.H
+++ b/FL/x.H
@@ -160,6 +160,7 @@ public:
   void flush() {w->flush();}
   static void x(Fl_Window* wi, int X) {wi->x(X);}
   static void y(Fl_Window* wi, int Y) {wi->y(Y);}
+  static int ewmh_supported();
 };
 
 extern FL_EXPORT char fl_override_redirect; // hack into Fl_X::make_xid()