061854990f
Also renamed as many references to OS X as possible to macOS in documentation.
Cherry-picked from b9702ef41a.
35 lines
1.2 KiB
Objective-C
35 lines
1.2 KiB
Objective-C
#import "MGLCompassCell.h"
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@implementation MGLCompassCell
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- (instancetype)init {
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if (self = [super init]) {
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self.sliderType = NSCircularSlider;
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// A tick mark for each cardinal direction.
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self.numberOfTickMarks = 4;
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// This slider goes backwards!
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self.minValue = -360;
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self.maxValue = 0;
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}
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return self;
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}
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- (void)drawKnob:(NSRect)knobRect {
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// Draw a red triangle pointing whichever way the slider is facing.
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NSBezierPath *trianglePath = [NSBezierPath bezierPath];
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[trianglePath moveToPoint:NSMakePoint(NSMinX(knobRect), NSMaxY(knobRect))];
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[trianglePath lineToPoint:NSMakePoint(NSMaxX(knobRect), NSMaxY(knobRect))];
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[trianglePath lineToPoint:NSMakePoint(NSMidX(knobRect), NSMinY(knobRect))];
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[trianglePath closePath];
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NSAffineTransform *transform = [NSAffineTransform transform];
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[transform translateXBy:NSMidX(knobRect) yBy:NSMidY(knobRect)];
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[transform scaleBy:0.8];
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[transform rotateByDegrees:self.doubleValue];
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[transform translateXBy:-NSMidX(knobRect) yBy:-NSMidY(knobRect)];
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[trianglePath transformUsingAffineTransform:transform];
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[[NSColor redColor] setFill];
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[trianglePath fill];
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}
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@end
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