Revision: 12572
http://sourceforge.net/p/skim-app/code/12572
Author: hofman
Date: 2021-11-21 15:56:58 +0000 (Sun, 21 Nov 2021)
Log Message:
-----------
Invert colors in dark mode in color space with gamma 1.6, so intermediate
colors get darker bias
Modified Paths:
--------------
trunk/NSGraphics_SKExtensions.m
Modified: trunk/NSGraphics_SKExtensions.m
===================================================================
--- trunk/NSGraphics_SKExtensions.m 2021-11-19 15:03:18 UTC (rev 12571)
+++ trunk/NSGraphics_SKExtensions.m 2021-11-21 15:56:58 UTC (rev 12572)
@@ -184,9 +184,9 @@
#pragma mark -
-#define LR 0.2126 * 1.987
-#define LG 0.7152 * 1.987
-#define LB 0.0722 * 1.987
+#define LR 0.2126 * 1.9337
+#define LG 0.7152 * 1.9337
+#define LB 0.0722 * 1.9337
extern NSArray *SKColorEffectFilters(void) {
NSMutableArray *filters = [NSMutableArray array];
@@ -200,8 +200,12 @@
// This is like CIColorInvert + CIHueAdjust, modified to map white to
dark gray rather than black
// Inverts a linear luminocity with weights from the CIE standards
// see
https://wiki.preterhuman.net/Matrix_Operations_for_Image_Processingand
https://beesbuzz.biz/code/16-hsv-color-transforms
+ if ((filter = [CIFilter filterWithName:@"CIGammaAdjust"
keysAndValues:@"inputPower", [NSNumber numberWithDouble:0.625], nil]))
+ [filters addObject:filter];
if ((filter = [CIFilter filterWithName:@"CIColorMatrix"
keysAndValues:@"inputRVector", [CIVector vectorWithX:1.0-LR Y:-LG Z:-LB],
@"inputGVector", [CIVector vectorWithX:-LR Y:1.0-LG Z:-LB], @"inputBVector",
[CIVector vectorWithX:-LR Y:-LG Z:1.0-LB], @"inputBiasVector", [CIVector
vectorWithX:1.0 Y:1.0 Z:1.0], nil]))
[filters addObject:filter];
+ if ((filter = [CIFilter filterWithName:@"CIGammaAdjust"
keysAndValues:@"inputPower", [NSNumber numberWithDouble:1.6], nil]))
+ [filters addObject:filter];
}
return filters;
}
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