93 lines
3.0 KiB
Objective-C
93 lines
3.0 KiB
Objective-C
#import "GBImageView.h"
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@implementation GBImageViewGridConfiguration
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- (instancetype)initWithColor:(NSColor *)color size:(NSUInteger)size
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{
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self = [super init];
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self.color = color;
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self.size = size;
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return self;
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}
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@end
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@implementation GBImageView
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{
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NSTrackingArea *trackingArea;
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}
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- (void)drawRect:(NSRect)dirtyRect
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{
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CGContextRef context = [[NSGraphicsContext currentContext] CGContext];
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CGContextSetInterpolationQuality(context, kCGInterpolationNone);
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[super drawRect:dirtyRect];
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CGFloat y_ratio = self.frame.size.height / self.image.size.height;
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CGFloat x_ratio = self.frame.size.width / self.image.size.width;
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for (GBImageViewGridConfiguration *conf in self.verticalGrids) {
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[conf.color set];
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for (CGFloat y = conf.size * y_ratio; y < self.frame.size.height; y += conf.size * y_ratio) {
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NSBezierPath *line = [NSBezierPath bezierPath];
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[line moveToPoint:NSMakePoint(0, y + 0.5)];
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[line lineToPoint:NSMakePoint(self.frame.size.width, y + 0.5)];
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[line setLineWidth:1.0];
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[line stroke];
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}
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}
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for (GBImageViewGridConfiguration *conf in self.horizontalGrids) {
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[conf.color set];
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for (CGFloat x = conf.size * x_ratio; x < self.frame.size.width; x += conf.size * x_ratio) {
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NSBezierPath *line = [NSBezierPath bezierPath];
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[line moveToPoint:NSMakePoint(x + 0.5, 0)];
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[line lineToPoint:NSMakePoint(x + 0.5, self.frame.size.height)];
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[line setLineWidth:1.0];
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[line stroke];
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}
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}
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}
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- (void)setHorizontalGrids:(NSArray *)horizontalGrids
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{
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self->_horizontalGrids = horizontalGrids;
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[self setNeedsDisplay];
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}
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- (void)setVerticalGrids:(NSArray *)verticalGrids
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{
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self->_verticalGrids = verticalGrids;
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[self setNeedsDisplay];
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}
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- (void)updateTrackingAreas
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{
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if(trackingArea != nil) {
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[self removeTrackingArea:trackingArea];
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}
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trackingArea = [ [NSTrackingArea alloc] initWithRect:[self bounds]
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options:NSTrackingMouseEnteredAndExited | NSTrackingActiveAlways | NSTrackingMouseMoved
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owner:self
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userInfo:nil];
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[self addTrackingArea:trackingArea];
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}
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- (void)mouseExited:(NSEvent *)theEvent
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{
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if ([self.delegate respondsToSelector:@selector(mouseDidLeaveImageView:)]) {
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[self.delegate mouseDidLeaveImageView:self];
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}
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}
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- (void)mouseMoved:(NSEvent *)theEvent
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{
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if ([self.delegate respondsToSelector:@selector(imageView:mouseMovedToX:Y:)]) {
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NSPoint location = [self convertPoint:theEvent.locationInWindow fromView:nil];
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location.x /= self.bounds.size.width;
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location.y /= self.bounds.size.height;
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location.y = 1 - location.y;
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location.x *= self.image.size.width;
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location.y *= self.image.size.height;
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[self.delegate imageView:self mouseMovedToX:(NSUInteger)location.x Y:(NSUInteger)location.y];
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}
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}
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@end
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