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This is a class for macOS versions lower than 10.10, where some image buttons on dark backgrounds (or other colored backgrounds) would draw in a dark color (usually black, for template images). With this class, a tint color can be set for these buttons, it defaults to white. This class is only intended to be used with template images.
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| /***************************************************************************** | ||
| * VLCTintedImageButtonCell.h | ||
| ***************************************************************************** | ||
| * Copyright (C) 2017 VLC authors and VideoLAN | ||
| * $Id$ | ||
| * | ||
| * Authors: Marvin Scholz <epirat07 at gmail dot com> | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation; either version 2 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program; if not, write to the Free Software | ||
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. | ||
| *****************************************************************************/ | ||
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| #import <Cocoa/Cocoa.h> | ||
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| @interface VLCTintedImageButtonCell : NSButtonCell | ||
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| @property (nonatomic) IBInspectable NSColor *imageTintColor; | ||
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| @end |
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| /***************************************************************************** | ||
| * VLCTintedImageButtonCell.m | ||
| ***************************************************************************** | ||
| * Copyright (C) 2017 VLC authors and VideoLAN | ||
| * $Id$ | ||
| * | ||
| * Authors: Marvin Scholz <epirat07 at gmail dot com> | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation; either version 2 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program; if not, write to the Free Software | ||
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. | ||
| *****************************************************************************/ | ||
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| #import "VLCTintedImageButtonCell.h" | ||
| #import "CompatibilityFixes.h" | ||
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| @interface VLCTintedImageButtonCell () { | ||
| NSMutableDictionary *_imageCache; | ||
| } | ||
| @end | ||
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| @implementation VLCTintedImageButtonCell | ||
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| + (void)load | ||
| { | ||
| /* On 10.10+ we do not want custom drawing, therefore we swap out the implementation | ||
| * of the selectors below with their original implementations. | ||
| * Just calling super is not enough here, as the button would still draw in a different | ||
| * way, non vibrant with weird highlighting behaviour. | ||
| */ | ||
| if (OSX_YOSEMITE_AND_HIGHER) { | ||
| swapoutOverride([VLCTintedImageButtonCell class], @selector(initWithCoder:)); | ||
| swapoutOverride([VLCTintedImageButtonCell class], @selector(drawImage:withFrame:inView:)); | ||
| } | ||
| } | ||
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| - (instancetype)initWithCoder:(NSCoder *)coder | ||
| { | ||
| self = [super initWithCoder:coder]; | ||
| if (self) { | ||
| _imageCache = [NSMutableDictionary dictionary]; | ||
| _imageTintColor = [NSColor whiteColor]; | ||
| } | ||
| return self; | ||
| } | ||
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| - (NSImage *)image:(NSImage*)image tintedWithColor:(NSColor *)tint | ||
| { | ||
| image = [image copy]; | ||
| if (tint) { | ||
| [image lockFocus]; | ||
| [tint set]; | ||
| NSRect imageRect = {NSZeroPoint, [image size]}; | ||
| NSRectFillUsingOperation(imageRect, NSCompositeSourceAtop); | ||
| [image unlockFocus]; | ||
| [image setTemplate:NO]; | ||
| } | ||
| return image; | ||
| } | ||
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| - (NSImage*)tintedImage:(NSImage*)image | ||
| { | ||
| NSNumber *key = @((NSInteger)image); | ||
| if (![_imageCache objectForKey:key]) { | ||
| NSImage *tintedImg = [self image:image tintedWithColor:_imageTintColor]; | ||
| [_imageCache setObject:tintedImg forKey:key]; | ||
| } | ||
| return [_imageCache objectForKey:key]; | ||
| } | ||
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| - (void)drawImage:(NSImage *)image withFrame:(NSRect)frame inView:(NSView *)controlView | ||
| { | ||
| [super drawImage:image withFrame:frame inView:controlView]; | ||
| } | ||
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| @end |