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Mac OS: simpler algorithm for function NSBitmapImageRep* GL_rect_to_nsbitmap()

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git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10834 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Manolo Gouy 2015-08-17 17:05:32 +00:00
parent 60a78880d5
commit daeed067c8
1 changed files with 10 additions and 9 deletions
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19
src/Fl_cocoa.mm
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@ -4142,16 +4142,17 @@ static NSBitmapImageRep* GL_rect_to_nsbitmap(Fl_Window *win, int x, int y, int w
Fl_Device_Plugin *pi = (Fl_Device_Plugin*)pm.plugin("opengl.device.fltk.org");
if (!pi) return nil;
Fl_RGB_Image *img = pi->rectangle_capture(win, x, y, w, h);
Fl_Offscreen offscreen = fl_create_offscreen(img->w(), img->h());
fl_begin_offscreen(offscreen);
CGRect rect = CGRectMake(0, 0, img->w(), img->h());
Fl_X::q_begin_image(rect, 0, 0, img->w(), img->h()); // flip the image
img->draw(0, 0);
Fl_X::q_end_image();
fl_end_offscreen();
NSBitmapImageRep* bitmap = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:NULL pixelsWide:img->w() pixelsHigh:img->h() bitsPerSample:8 samplesPerPixel:4 hasAlpha:YES isPlanar:NO colorSpaceName:NSDeviceRGBColorSpace bytesPerRow:4*img->w() bitsPerPixel:32];
memcpy([bitmap bitmapData], CGBitmapContextGetData(offscreen), CGBitmapContextGetBytesPerRow(offscreen)*CGBitmapContextGetHeight(offscreen));
fl_delete_offscreen(offscreen);
memset([bitmap bitmapData], 0xFF, [bitmap bytesPerPlane]);
const uchar *from = img->array;
for (int r = img->h() - 1; r >= 0; r--) {
uchar *to = [bitmap bitmapData] + r * [bitmap bytesPerRow];
for (int c = 0; c < img->w(); c++) {
memcpy(to, from, 3);
from += 3;
to += 4;
}
}
delete img;
return bitmap;
}