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//
// GTMNSColor+Theme.m
//
// Category for working with Themes and NSColor
//
// Copyright 2006-2008 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy
// of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
//
#import "GTMNSColor+Theme.h"
@implementation NSColor (GTMColorThemeAdditions)
/// Create up an NSColor based on a Theme Text Color
/// Colors will be in the device color space
+ (id)gtm_colorWithThemeTextColor:(ThemeTextColor)textColor {
NSColor *nsTextColor = nil;
RGBColor rgbTextColor;
OSStatus status = GetThemeTextColor(textColor, 32, true, &rgbTextColor);
if (status == noErr) {
float red = rgbTextColor.red / 65535.0f;
float green = rgbTextColor.green / 65535.0f;
float blue = rgbTextColor.blue / 65535.0f;
nsTextColor = [NSColor colorWithDeviceRed:red
green:green
blue:blue
alpha:1.0f];
} else {
#ifdef DEBUG
NSLog(@"Unable to create color for textcolor %d", textColor);
#endif
}
return nsTextColor;
}
/// Create up an NSColor based on a Theme Brush
/// Colors will be in the DeviceRGB color space
+ (id)gtm_colorWithThemeBrush:(ThemeBrush)brush {
NSColor *nsBrushColor = nil;
RGBColor rgbBrushColor;
OSStatus status = GetThemeBrushAsColor(brush, 32, true, &rgbBrushColor);
if (status == noErr) {
nsBrushColor = [NSColor colorWithDeviceRed:rgbBrushColor.red / 65535.0f
green:rgbBrushColor.green / 65535.0f
blue:rgbBrushColor.blue / 65535.0f
alpha:1.0f];
} else {
#ifdef DEBUG
NSLog(@"Unable to create color for brushcolor %d", brush);
#endif
}
return nsBrushColor;
}
+ (NSColor *)gtm_deviceBlackColor { /* 0.0f white */
return [NSColor colorWithDeviceWhite:0.0f alpha:1.0f];
}
+ (NSColor *)gtm_deviceDarkGrayColor { /* 0.333 white */
return [NSColor colorWithDeviceWhite:1.0f/3.0f alpha:1.0f];
}
+ (NSColor *)gtm_deviceLightGrayColor { /* 0.667 white */
return [NSColor colorWithDeviceWhite:2.0f/3.0f alpha:1.0f];
}
+ (NSColor *)gtm_deviceWhiteColor { /* 1.0f white */
return [NSColor colorWithDeviceWhite:1.0f alpha:1.0f];
}
+ (NSColor *)gtm_deviceGrayColor { /* 0.5 white */
return [NSColor colorWithDeviceWhite:0.5f alpha:1.0f];
}
+ (NSColor *)gtm_deviceRedColor { /* 1.0f, 0.0f, 0.0f RGB */
return [NSColor colorWithDeviceRed:1.0f green:0.0f blue: 0.0f alpha:1.0f];
}
+ (NSColor *)gtm_deviceGreenColor { /* 0.0f, 1.0f, 0.0f RGB */
return [NSColor colorWithDeviceRed:0.0f green:1.0f blue: 0.0f alpha:1.0f];
}
+ (NSColor *)gtm_deviceBlueColor { /* 0.0f, 0.0f, 1.0f RGB */
return [NSColor colorWithDeviceRed:0.0f green:0.0f blue: 1.0f alpha:1.0f];
}
+ (NSColor *)gtm_deviceCyanColor { /* 0.0f, 1.0f, 1.0f RGB */
return [NSColor colorWithDeviceRed:0.0f green:1.0f blue: 1.0f alpha:1.0f];
}
+ (NSColor *)gtm_deviceYellowColor { /* 1.0f, 1.0f, 0.0f RGB */
return [NSColor colorWithDeviceRed:1.0f green:1.0f blue: 0.0f alpha:1.0f];
}
+ (NSColor *)gtm_deviceMagentaColor { /* 1.0f, 0.0f, 1.0f RGB */
return [NSColor colorWithDeviceRed:1.0f green:0.0f blue: 1.0f alpha:1.0f];
}
+ (NSColor *)gtm_deviceOrangeColor { /* 1.0f, 0.5, 0.0f RGB */
return [NSColor colorWithDeviceRed:1.0f green:0.5f blue: 0.0f alpha:1.0f];
}
+ (NSColor *)gtm_devicePurpleColor { /* 0.5, 0.0f, 0.5 RGB */
return [NSColor colorWithDeviceRed:0.5f green:0.0f blue: 0.5f alpha:1.0f];
}
+ (NSColor *)gtm_deviceBrownColor { /* 0.6, 0.4, 0.2 RGB */
return [NSColor colorWithDeviceRed:0.6f green:0.4f blue: 0.2f alpha:1.0f];
}
+ (NSColor *)gtm_deviceClearColor { /* 0.0f white, 0.0f alpha */
return [NSColor colorWithDeviceWhite:0.0f alpha:0.0f];
}
- (NSColor *)gtm_safeColorWithAlphaComponent:(float)alpha {
// This mess is here because of
// Radar 5047862 [NSColor colorWithAlphaComponent] does NOT maintain colorspace.
// As of 10.4.8, colorWithAlphaComponent will return an NSCalibratedRGBColor
// instead of a NSDeviceRGBColor when you call colorWithAlphaComponent on
// a NSDeviceRGBColor even though the docs say "Creates and returns an NSColor
// object that has the same color space and component values as the receiver"
// We must use exceptions in case somebody attempts to put a pattern through
// here. The assumption being made is that alpha is the last color component
// which it is for all current cases.
NSColor *newColor = nil;
#if (MAC_OS_X_VERSION_MIN_REQUIRED <= MAC_OS_X_VERSION_10_4)
@try {
int componentCount = [self numberOfComponents];
float *components = (float*)calloc(componentCount, sizeof(float));
if (!components) {
NSException *exception = [NSException exceptionWithName:NSMallocException
reason:@"Unable to malloc components"
userInfo:nil];
@throw exception;
}
[self getComponents:components];
components[componentCount - 1] = alpha;
newColor = [NSColor colorWithColorSpace:[self colorSpace]
components:components count:componentCount];
free(components);
}
@catch (NSException *ex) {
// Probably passed us a pattern. I'm not even sure how Apple deals with
// changing the alpha of a pattern color.
newColor = [self colorWithAlphaComponent:alpha];
}
#else
// Radar 5047862 is fixed in Leopard.
newColor = [self colorWithAlphaComponent:alpha];
#endif
return newColor;
}
- (NSColor *)gtm_safeColorUsingColorSpaceName:(NSString *)colorSpaceName {
NSColor *outColor = [self colorUsingColorSpaceName:colorSpaceName];
if (!outColor) {
NSBitmapImageRep *rep = [[[NSBitmapImageRep alloc] initWithBitmapDataPlanes:NULL
pixelsWide:1
pixelsHigh:1
bitsPerSample:8
samplesPerPixel:4
hasAlpha:YES
isPlanar:NO
colorSpaceName:colorSpaceName
bytesPerRow:0
bitsPerPixel:0] autorelease];
NSGraphicsContext *context = [NSGraphicsContext graphicsContextWithBitmapImageRep:rep];
if (context) {
NSRect rect = NSMakeRect(0, 0, 1, 1);
[NSGraphicsContext saveGraphicsState];
[NSGraphicsContext setCurrentContext:context];
[self setFill];
NSRectFill(rect);
[NSGraphicsContext restoreGraphicsState];
outColor = [rep colorAtX:0 y:0];
}
}
return outColor;
}
@end
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