Adjust darwin build configuration to new project structure.

platform-darwin/Source/Mac/MPGradientView.m

@@ -0,0 +1,81 @@
+//
+// Created by Maarten Billemont on 2016-05-15.
+// Copyright (c) 2016 Lyndir. All rights reserved.
+//
+
+#import "MPGradientView.h"
+
+@implementation MPGradientView {
+    NSGradient *gradient;
+}
+
+- (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;
+    gradient = nil;
+    [self setNeedsDisplay:YES];
+}
+
+- (void)setEndingColor:(NSColor *)endingColor {
+
+    _endingColor = endingColor;
+    gradient = nil;
+    [self setNeedsDisplay:YES];
+}
+
+- (void)setAngle:(NSInteger)angle {
+
+    _angle = angle;
+    gradient = nil;
+    [self setNeedsDisplay:YES];
+}
+
+- (void)setRatio:(CGFloat)ratio {
+
+    _ratio = ratio;
+    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;
+    }
+
+    [(gradient?: (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