Set depth of image returned by Fl_Image_Surface::image() back to 3 on Mac OS X.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11119 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 5 insertions, 7 deletions

diff --git a/src/Fl_Image_Surface.cxx b/src/Fl_Image_Surface.cxx
index 6de588063..00abc747a 100644
--- a/src/Fl_Image_Surface.cxx
+++ b/src/Fl_Image_Surface.cxx
@@ -41,12 +41,14 @@ Fl_Image_Surface::Fl_Image_Surface(int w, int h) : Fl_Surface_Device(NULL) {
   width = w;
   height = h;
 #ifdef __APPLE__
-  offscreen = Fl_Quartz_Graphics_Driver::create_offscreen_with_alpha(w, h);
+  offscreen = fl_create_offscreen(w, h);
   helper = new Fl_Quartz_Flipped_Surface_(width, height);
   driver(helper->driver());
   CGContextSaveGState(offscreen);
   CGContextTranslateCTM(offscreen, 0, height);
   CGContextScaleCTM(offscreen, 1.0f, -1.0f);
+  CGContextSetRGBFillColor(offscreen, 1, 1, 1, 1);
+  CGContextFillRect(offscreen, CGRectMake(0,0,w,h));
 #elif defined(WIN32)
   offscreen = fl_create_offscreen(w, h);
   helper = new Fl_GDI_Surface_();
@@ -93,13 +95,9 @@ Fl_Image_Surface::~Fl_Image_Surface() {
 Fl_RGB_Image* Fl_Image_Surface::image()
 {
   unsigned char *data;
-  int depth = 3, ld = 0;
 #ifdef __APPLE__
   CGContextFlush(offscreen);
-  ld = CGBitmapContextGetBytesPerRow(offscreen);
-  data = (uchar*)malloc(ld * height);
-  memcpy(data, (uchar *)CGBitmapContextGetData(offscreen), ld * height);
-  depth = 4;
+  data = fl_read_image(NULL, 0, 0, width, height, 0);
   fl_gc = 0;
 #elif defined(WIN32)
   fl_pop_clip(); 
@@ -117,7 +115,7 @@ Fl_RGB_Image* Fl_Image_Surface::image()
   fl_window = pre_window; 
   previous->set_current();
 #endif
-  Fl_RGB_Image *image = new Fl_RGB_Image(data, width, height, depth, ld);
+  Fl_RGB_Image *image = new Fl_RGB_Image(data, width, height);
   image->alloc_array = 1;
   return image;
 }