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Slightly improve Fl_Quartz_Graphics_Driver::copy_offscreen() when macOS ≥ 10.4

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This commit is contained in:
ManoloFLTK 2020-01-15 18:18:59 +01:00
parent afcc79c3f7
commit 3265d439f3
1 changed files with 17 additions and 10 deletions
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27
src/drivers/Quartz/Fl_Quartz_Graphics_Driver.cxx
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@ -92,16 +92,23 @@ void Fl_Quartz_Graphics_Driver::copy_offscreen(int x, int y, int w, int h, Fl_Of
void *data = CGBitmapContextGetData(src);
int sw = CGBitmapContextGetWidth(src);
int sh = CGBitmapContextGetHeight(src);
CGImageAlphaInfo alpha = CGBitmapContextGetAlphaInfo(src);
CGColorSpaceRef lut = CGColorSpaceCreateDeviceRGB();
// when output goes to a Quartz printercontext, release of the bitmap must be
// delayed after the end of the printed page
CFRetain(src);
CGDataProviderRef src_bytes = CGDataProviderCreateWithData( src, data, sw*sh*4, bmProviderRelease);
CGImageRef img = CGImageCreate( sw, sh, 8, 4*8, 4*sw, lut, alpha,
src_bytes, 0L, false, kCGRenderingIntentDefault);
CGDataProviderRelease(src_bytes);
CGColorSpaceRelease(lut);
CGImageRef img;
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
if (fl_mac_os_version >= 100400) img = CGBitmapContextCreateImage(src); // requires 10.4
else
#endif
{
CGImageAlphaInfo alpha = CGBitmapContextGetAlphaInfo(src);
CGColorSpaceRef lut = CGColorSpaceCreateDeviceRGB();
// when output goes to a Quartz printercontext, release of the bitmap must be
// delayed after the end of the printed page
CFRetain(src);
CGDataProviderRef src_bytes = CGDataProviderCreateWithData( src, data, sw*sh*4, bmProviderRelease);
img = CGImageCreate( sw, sh, 8, 4*8, 4*sw, lut, alpha,
src_bytes, 0L, false, kCGRenderingIntentDefault);
CGDataProviderRelease(src_bytes);
CGColorSpaceRelease(lut);
}
float s = scale();
Fl_Surface_Device *current = Fl_Surface_Device::surface();
// test whether osrc was created by fl_create_offscreen()