//============================================================================== // 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