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MasterPassword/platform-darwin/Source/Mac/MPGradientView.m
2017-05-07 18:44:09 -04:00

99 lines
2.6 KiB
Objective-C

//==============================================================================
// This file is part of Master Password.
// Copyright (c) 2011-2017, Maarten Billemont.
//
// Master Password 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 3 of the License, or
// (at your option) any later version.
//
// Master Password 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 can find a copy of the GNU General Public License in the
// LICENSE file. Alternatively, see <http://www.gnu.org/licenses/>.
//==============================================================================
#import "MPGradientView.h"
@interface MPGradientView()
@property(nonatomic, strong) NSGradient *gradient;
@end
@implementation MPGradientView
- (id)initWithFrame:(NSRect)frame {
if (!(self = [super initWithFrame:frame]))
return nil;
[self defaults];
return self;
}
- (instancetype)initWithCoder:(NSCoder *)coder {
if (!(self = [super initWithCoder:coder]))
return nil;
[self defaults];
return self;
}
- (void)defaults {
self.startingColor = [NSColor colorWithCalibratedWhite:0.0 alpha:0.0];
self.endingColor = [NSColor colorWithCalibratedWhite:0.0 alpha:1.0];
self.angle = 270;
self.ratio = 0.5f;
}
- (void)setStartingColor:(NSColor *)startingColor {
_startingColor = startingColor;
self.gradient = nil;
[self setNeedsDisplay:YES];
}
- (void)setEndingColor:(NSColor *)endingColor {
_endingColor = endingColor;
self.gradient = nil;
[self setNeedsDisplay:YES];
}
- (void)setAngle:(NSInteger)angle {
_angle = angle;
self.gradient = nil;
[self setNeedsDisplay:YES];
}
- (void)setRatio:(CGFloat)ratio {
_ratio = ratio;
self.gradient = nil;
[self setNeedsDisplay:YES];
}
- (void)drawRect:(NSRect)dirtyRect {
if (!self.startingColor || !self.endingColor || [self.startingColor isEqual:self.endingColor]) {
[(self.startingColor?: self.endingColor) set];
NSRectFill( dirtyRect );
return;
}
[(self.gradient?: (self.gradient = [[NSGradient alloc] initWithColorsAndLocations:
self.startingColor, (CGFloat)0.f,
[self.startingColor blendedColorWithFraction:0.5f ofColor:self.endingColor], self.ratio,
self.endingColor, (CGFloat)1.f, nil]))
drawInRect:self.bounds angle:self.angle];
}
@end