A hopefully clearer implementation of the fl_XXX_offscreen() functions.

The Xlib driver is tricky because it uses two kinds of offscreen buffers.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11277 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

2 files changed, 2 insertions, 4 deletions

diff --git a/FL/Fl_Image_Surface.H b/FL/Fl_Image_Surface.H
index 3236addd5..f556ed549 100644
--- a/FL/Fl_Image_Surface.H
+++ b/FL/Fl_Image_Surface.H
@@ -47,9 +47,6 @@
 */
 class FL_EXPORT Fl_Image_Surface : public Fl_Widget_Surface {
   friend Fl_Offscreen fl_create_offscreen(int w, int h);
-#ifndef FL_DOXYGEN
-  friend Fl_Offscreen fl_create_offscreen_with_alpha(int, int);//X11 only
-#endif
   friend void fl_begin_offscreen(Fl_Offscreen ctx);
   friend void fl_end_offscreen(void);
   friend void fl_delete_offscreen(Fl_Offscreen ctx);
@@ -62,6 +59,7 @@ protected:
   void untranslate();
 public:
   Fl_Image_Surface(int w, int h, int high_res = 0);
+  Fl_Image_Surface(Fl_Offscreen off, int w, int h);
   ~Fl_Image_Surface();
   void set_current();
   void end_current();
@@ -70,6 +68,7 @@ public:
   void origin(int *x, int *y);
   void origin(int x, int y);
   int printable_rect(int *w, int *h);
+  Fl_Offscreen get_offscreen_before_delete();
 };
 
 #endif // Fl_Image_Surface_H
diff --git a/FL/x.H b/FL/x.H
index aca9749a4..7473df78b 100644
--- a/FL/x.H
+++ b/FL/x.H
@@ -96,7 +96,6 @@ extern FL_EXPORT const XEvent* fl_xevent;
 extern FL_EXPORT ulong fl_event_time;
 
 typedef ulong Fl_Offscreen;
-extern FL_EXPORT Fl_Offscreen fl_create_offscreen_with_alpha(int,int);
 
 // Bitmap masks
 typedef ulong Fl_Bitmask;