Curtis Hard
110 lines
2.9 KiB
Objective-C
110 lines
2.9 KiB
Objective-C
//
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// IJSVGImage.m
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// IJSVGExample
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//
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// Created by Curtis Hard on 28/05/2016.
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// Copyright © 2016 Curtis Hard. All rights reserved.
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//
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#import "IJSVGImage.h"
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#import "IJSVGPath.h"
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#import "IJSVGTransform.h"
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@implementation IJSVGImage
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- (void)dealloc
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{
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(void)(CGImageRelease(CGImage)), CGImage = nil;
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(void)([imagePath release]), imagePath = nil;
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(void)([image release]), image = nil;
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[super dealloc];
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}
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- (void)loadFromBase64EncodedString:(NSString*)encodedString
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{
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if ([encodedString hasPrefix:@"data:"]) {
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encodedString = [encodedString stringByReplacingOccurrencesOfString:@"\\s+"
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withString:@""
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options:NSRegularExpressionSearch
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range:NSMakeRange(0, encodedString.length)];
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}
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NSURL* URL = [NSURL URLWithString:encodedString];
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NSData* data = [NSData dataWithContentsOfURL:URL];
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// no data, just ignore...invalid probably
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if (data == nil) {
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return;
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}
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// set the image against the container
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NSImage* anImage = [[[NSImage alloc] initWithData:data] autorelease];
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[self setImage:anImage];
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}
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- (IJSVGPath*)path
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{
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if (imagePath == nil) {
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// lazy load the path as it might not be needed
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imagePath = [[IJSVGPath alloc] init];
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[imagePath.path appendBezierPathWithRect:NSMakeRect(0.f, 0.f, self.width.value, self.height.value)];
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[imagePath close];
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}
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return imagePath;
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}
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- (void)setImage:(NSImage*)anImage
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{
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if (image != nil) {
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(void)([image release]), image = nil;
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}
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image = [anImage retain];
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if (CGImage != nil) {
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CGImageRelease(CGImage);
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CGImage = nil;
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}
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NSRect rect = NSMakeRect(0.f, 0.f, self.width.value, self.height.value);
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CGImage = [image CGImageForProposedRect:&rect
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context:nil
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hints:nil];
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// be sure to retain (some reason this is required in Xcode 8 beta 5?)
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CGImageRetain(CGImage);
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}
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- (CGImageRef)CGImage
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{
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return CGImage;
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}
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- (void)drawInContextRef:(CGContextRef)context
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path:(IJSVGPath*)path
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{
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// run the transforms
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// draw the image
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if (self.width.value == 0.f || self.height.value == 0.f) {
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return;
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}
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// make sure path is set
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if (path == nil) {
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path = [self path];
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}
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CGRect rect = path.path.bounds;
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CGRect bounds = CGRectMake(0.f, 0.f, rect.size.width, rect.size.height);
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// save the state of the context
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CGContextSaveGState(context);
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{
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// flip the coordinates
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CGContextTranslateCTM(context, rect.origin.x, (rect.origin.y) + rect.size.height);
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CGContextScaleCTM(context, 1.f, -1.f);
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CGContextDrawImage(context, bounds, CGImage);
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}
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CGContextRestoreGState(context);
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}
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@end
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