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Bug 779942 - Make GimpPickButton honor monitor profile. 

Quartz/macOS implementation for the color picker.
This is untested but I am trying to advance our 2.10 blockers by
implementing the base code for this feature. Please anyone with macOS
machine access, review and fix if needed!
This commit is contained in:
Jehan 2018-03-16 17:06:32 +01:00
parent b279c2d217
commit 6c8300923d
1 changed files with 60 additions and 5 deletions
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65
libgimpwidgets/gimppickbutton-quartz.c
View File

@ -155,11 +155,13 @@
- (void)pickColor:(NSEvent *)event
{
CGImageRef root_image_ref;
CFDataRef pixel_data;
const guchar *data;
GimpRGB rgb;
NSPoint point;
CGImageRef root_image_ref;
CFDataRef pixel_data;
const guchar *data;
GimpRGB rgb;
NSPoint point;
GimpColorProfile *profile = NULL;
CGColorSpaceRef color_space = NULL;
/* The event gives us a point in Cocoa window coordinates. The function
* CGWindowListCreateImage expects a rectangle in screen coordinates
@ -182,7 +184,60 @@
pixel_data = CGDataProviderCopyData (CGImageGetDataProvider (root_image_ref));
data = CFDataGetBytePtr (pixel_data);
color_space = CGImageGetColorSpace (root_image_ref);
if (color_space)
{
CFDataRef icc_data = NULL;
icc_data = CGColorSpaceCopyICCData (color_space);
if (icc_data)
{
UInt8 *buffer = g_malloc (CFDataGetLength (icc_data));
CFDataGetBytes (icc_data, CFRangeMake (0, CFDataGetLength (icc_data)),
buffer);
profile = gimp_color_profile_new_from_icc_profile (buffer,
CFDataGetLength (icc_data),
NULL);
g_free (buffer);
CFRelease (icc_data);
}
CFRelease (color_space);
}
gimp_rgba_set_uchar (&rgb, data[2], data[1], data[0], 255);
if (profile)
{
GimpColorProfile *srgb_profile;
GimpColorTransform *transform;
const Babl *format;
GimpColorTransformFlags flags = 0;
format = babl_format ("R'G'B'A double");
flags |= GIMP_COLOR_TRANSFORM_FLAGS_NOOPTIMIZE;
flags |= GIMP_COLOR_TRANSFORM_FLAGS_BLACK_POINT_COMPENSATION;
srgb_profile = gimp_color_profile_new_rgb_srgb ();
transform = gimp_color_transform_new (profile, format,
srgb_profile, format,
GIMP_COLOR_RENDERING_INTENT_PERCEPTUAL,
flags);
if (transform)
{
gimp_color_transform_process_pixels (transform,
format, &rgb,
format, &rgb,
1);
gimp_rgb_clamp (&rgb);
g_object_unref (transform);
}
g_object_unref (srgb_profile);
g_object_unref (profile);
}
CGImageRelease (root_image_ref);
CFRelease (pixel_data);