Fluid printing used wrong colors under Windows (STR #2195)

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6784 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

CHANGES

@@ -1,5 +1,6 @@
 CHANGES IN FLTK 1.3.0
 
+	- Fluid printing used wrong colors under Windows (STR #2195)
 	- Updated documentation for Fl_Input_
 	- Fixed fl_draw_image to obey the alpha channel, hoping that 
 	  this has no adverse effect on existing software (OS X only)

fluid/fluid.cxx

@@ -1018,6 +1018,14 @@ void print_menu_cb(Fl_Widget *, void *) {
     win    = (Fl_Window *)(windows[winpage]->o);
     pixels = windows[winpage]->read_image(w, h);
 
+    // Swap colors: FLTK uses R-G-B --> Windows GDI uses B-G-R
+
+    { uchar *p = pixels;
+      for (int i=0; i<w*h; i++, p+=3) {
+	uchar temp = p[0]; p[0] = p[2]; p[2] = temp;
+      }
+    }
+
     // Figure out the window size, first at 100 PPI and then scaled
     // down if that is too big...
     ww = w * xdpi / 100;