Fix a problem seen in fluid on the Mac OS platform.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11285 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 16 insertions, 3 deletions

diff --git a/src/drivers/Quartz/Fl_Quartz_Graphics_Driver_image.cxx b/src/drivers/Quartz/Fl_Quartz_Graphics_Driver_image.cxx
index 0e1f777f1..668bb434f 100644
--- a/src/drivers/Quartz/Fl_Quartz_Graphics_Driver_image.cxx
+++ b/src/drivers/Quartz/Fl_Quartz_Graphics_Driver_image.cxx
@@ -25,6 +25,7 @@
 #include <FL/fl_draw.H>
 #include <FL/Fl_Printer.H>
 #include <FL/x.H>
+#include <FL/Fl_Image_Surface.H>
 
 #define MAXBUFFER 0x40000 // 256k
 
@@ -272,13 +273,25 @@ fl_uintptr_t Fl_Quartz_Graphics_Driver::cache(Fl_Bitmap*, int w, int h, const uc
 }
 
 fl_uintptr_t Fl_Quartz_Graphics_Driver::cache(Fl_Pixmap *img, int w, int h, const char *const*data) {
-  Fl_Offscreen id = fl_create_offscreen(w, h);
-  fl_begin_offscreen(id);
+  Fl_Image_Surface *surface = new Fl_Image_Surface(w,h);
+  surface->set_current();
   fl_draw_pixmap(data, 0, 0, FL_BLACK);
-  fl_end_offscreen();
+  surface->end_current();
+  Fl_Offscreen id = surface->get_offscreen_before_delete();
+  delete surface;
   return (fl_uintptr_t)id;
 }
 
+void Fl_Quartz_Graphics_Driver::uncache(Fl_Pixmap *img)
+{
+  if (img->id_) {
+    void *data = CGBitmapContextGetData((CGContextRef)img->id_);
+    free(data);
+    CGContextRelease((CGContextRef)img->id_);
+    img->id_ = NULL;
+  }
+}
+
 void Fl_Quartz_Graphics_Driver::draw_CGImage(CGImageRef cgimg, int x, int y, int w, int h, int srcx, int srcy, int sw, int sh)
 {
   CGRect rect = CGRectMake(x, y, w, h);