Implement non-rectangular windows using the Window Driver mechanism.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11336 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 8 insertions, 1 deletions

diff --git a/FL/Fl_Window_Driver.H b/FL/Fl_Window_Driver.H
index e252d22bf..98934a3d4 100644
--- a/FL/Fl_Window_Driver.H
+++ b/FL/Fl_Window_Driver.H
@@ -28,14 +28,18 @@
 
 
 class Fl_Window;
+class Fl_Image;
 
 
 /**
  \brief A base class for platform specific window handling code.
   */
 class FL_EXPORT Fl_Window_Driver {
+  friend class Fl_Window;
 protected:
   Fl_Window *pWindow;
+  struct shape_data_type;
+  shape_data_type *shape_data_; ///< non-null means the window has a non-rectangular shape
 public:
   Fl_Window_Driver(Fl_Window *);
   virtual ~Fl_Window_Driver();
@@ -47,7 +51,10 @@ public:
   virtual void take_focus() { }
   virtual int double_flush(int eraseoverlay);
   virtual void destroy_double_buffer();
-  void draw();
+  virtual void draw();
+  void shape_pixmap_(Fl_Image* pixmap);
+  virtual void shape(const Fl_Image* img) {}
+  virtual void shape_alpha_(Fl_Image* img, int offset) {}
 };