82 lines
1.8 KiB
Mathematica
82 lines
1.8 KiB
Mathematica
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//
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// Created by Maarten Billemont on 2016-05-15.
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// Copyright (c) 2016 Lyndir. All rights reserved.
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//
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#import "MPGradientView.h"
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@implementation MPGradientView {
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NSGradient *gradient;
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}
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- (id)initWithFrame:(NSRect)frame {
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if (!(self = [super initWithFrame:frame]))
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return nil;
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[self defaults];
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return self;
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}
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- (instancetype)initWithCoder:(NSCoder *)coder {
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if (!(self = [super initWithCoder:coder]))
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return nil;
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[self defaults];
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return self;
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}
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- (void)defaults {
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self.startingColor = [NSColor colorWithCalibratedWhite:0.0 alpha:0.0];
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self.endingColor = [NSColor colorWithCalibratedWhite:0.0 alpha:1.0];
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self.angle = 270;
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self.ratio = 0.5f;
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}
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- (void)setStartingColor:(NSColor *)startingColor {
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_startingColor = startingColor;
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gradient = nil;
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[self setNeedsDisplay:YES];
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}
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- (void)setEndingColor:(NSColor *)endingColor {
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_endingColor = endingColor;
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gradient = nil;
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[self setNeedsDisplay:YES];
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}
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- (void)setAngle:(NSInteger)angle {
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_angle = angle;
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gradient = nil;
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[self setNeedsDisplay:YES];
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}
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- (void)setRatio:(CGFloat)ratio {
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_ratio = ratio;
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gradient = nil;
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[self setNeedsDisplay:YES];
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}
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- (void)drawRect:(NSRect)dirtyRect {
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if (!self.startingColor || !self.endingColor || [self.startingColor isEqual:self.endingColor]) {
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[(self.startingColor?: self.endingColor) set];
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NSRectFill( dirtyRect );
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return;
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}
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[(gradient?: (gradient = [[NSGradient alloc] initWithColorsAndLocations:
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self.startingColor, (CGFloat)0.f,
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[self.startingColor blendedColorWithFraction:0.5f ofColor:self.endingColor], self.ratio,
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self.endingColor, (CGFloat)1.f, nil]))
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drawInRect:self.bounds angle:self.angle];
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}
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@end
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