- Add Editor support
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//
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// CLSplashTool.h
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//
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// Created by sho yakushiji on 2014/06/21.
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// Copyright (c) 2014年 CALACULU. All rights reserved.
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//
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#import "CLImageToolBase.h"
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@interface CLSplashTool : CLImageToolBase
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@end
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//
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// CLSplashTool.m
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//
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// Created by sho yakushiji on 2014/06/21.
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// Copyright (c) 2014年 CALACULU. All rights reserved.
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//
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#import "CLSplashTool.h"
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static NSString* const kCLSplashToolEraserIconName = @"eraserIconAssetsName";
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@implementation CLSplashTool
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{
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UIImageView *_drawingView;
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UIImage *_maskImage;
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UIImage *_grayImage;
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CGSize _originalImageSize;
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CGPoint _prevDraggingPosition;
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UIView *_menuView;
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UISlider *_widthSlider;
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UIView *_strokePreview;
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UIView *_strokePreviewBackground;
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UIImageView *_eraserIcon;
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CLToolbarMenuItem *_colorBtn;
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}
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+ (NSArray*)subtools
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{
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return nil;
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}
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+ (NSString*)defaultTitle
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{
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return [CLImageEditorTheme localizedString:@"CLSplashTool_DefaultTitle" withDefault:@"Splash"];
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}
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+ (BOOL)isAvailable
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{
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return YES;
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}
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+ (CGFloat)defaultDockedNumber
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{
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return 4.6;
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}
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#pragma mark- optional info
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+ (NSDictionary*)optionalInfo
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{
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return @{
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kCLSplashToolEraserIconName : @"",
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};
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}
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#pragma mark- implementation
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- (void)setup
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{
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_originalImageSize = self.editor.imageView.image.size;
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_drawingView = [[UIImageView alloc] initWithFrame:self.editor.imageView.bounds];
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_drawingView.contentMode = UIViewContentModeScaleAspectFit;
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_grayImage = [[self.editor.imageView.image aspectFit:CGSizeMake(_drawingView.width*2, _drawingView.height*2)] grayScaleImage];
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_drawingView.image = _grayImage;
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UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(drawingViewDidPan:)];
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panGesture.maximumNumberOfTouches = 1;
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_drawingView.userInteractionEnabled = YES;
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[_drawingView addGestureRecognizer:panGesture];
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[self.editor.imageView addSubview:_drawingView];
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self.editor.imageView.userInteractionEnabled = YES;
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self.editor.scrollView.panGestureRecognizer.minimumNumberOfTouches = 2;
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self.editor.scrollView.panGestureRecognizer.delaysTouchesBegan = NO;
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self.editor.scrollView.pinchGestureRecognizer.delaysTouchesBegan = NO;
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_menuView = [[UIView alloc] initWithFrame:self.editor.menuView.frame];
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_menuView.backgroundColor = self.editor.menuView.backgroundColor;
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[self.editor.view addSubview:_menuView];
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[self setMenu];
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_menuView.transform = CGAffineTransformMakeTranslation(0, self.editor.view.height-_menuView.top);
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[UIView animateWithDuration:kCLImageToolAnimationDuration
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animations:^{
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self->_menuView.transform = CGAffineTransformIdentity;
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}];
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}
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- (void)cleanup
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{
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[_drawingView removeFromSuperview];
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self.editor.imageView.userInteractionEnabled = NO;
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self.editor.scrollView.panGestureRecognizer.minimumNumberOfTouches = 1;
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[UIView animateWithDuration:kCLImageToolAnimationDuration
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animations:^{
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self->_menuView.transform = CGAffineTransformMakeTranslation(0, self.editor.view.height-self->_menuView.top);
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}
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completion:^(BOOL finished) {
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[self->_menuView removeFromSuperview];
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}];
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}
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- (void)executeWithCompletionBlock:(void (^)(UIImage *, NSError *, NSDictionary *))completionBlock
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{
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UIImage *backgroundImage = self.editor.imageView.image;
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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UIImage *image = [self buildImageWithBackgroundImage:backgroundImage];
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dispatch_async(dispatch_get_main_queue(), ^{
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completionBlock(image, nil, nil);
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});
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});
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}
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#pragma mark-
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- (UISlider*)defaultSliderWithWidth:(CGFloat)width
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{
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UISlider *slider = [[UISlider alloc] initWithFrame:CGRectMake(0, 0, width, 34)];
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[slider setMaximumTrackImage:[UIImage new] forState:UIControlStateNormal];
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[slider setMinimumTrackImage:[UIImage new] forState:UIControlStateNormal];
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[slider setThumbImage:[UIImage new] forState:UIControlStateNormal];
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slider.thumbTintColor = [UIColor whiteColor];
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return slider;
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}
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- (UIImage*)widthSliderBackground
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{
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CGSize size = _widthSlider.frame.size;
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UIGraphicsBeginImageContextWithOptions(size, NO, 0.0);
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CGContextRef context = UIGraphicsGetCurrentContext();
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UIColor *color = [[[CLImageEditorTheme theme] toolbarTextColor] colorWithAlphaComponent:0.5];
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CGFloat strRadius = 1;
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CGFloat endRadius = size.height/2 * 0.6;
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CGPoint strPoint = CGPointMake(strRadius + 5, size.height/2 - 2);
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CGPoint endPoint = CGPointMake(size.width-endRadius - 1, strPoint.y);
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CGMutablePathRef path = CGPathCreateMutable();
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CGPathAddArc(path, NULL, strPoint.x, strPoint.y, strRadius, -M_PI/2, M_PI-M_PI/2, YES);
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CGPathAddLineToPoint(path, NULL, endPoint.x, endPoint.y + endRadius);
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CGPathAddArc(path, NULL, endPoint.x, endPoint.y, endRadius, M_PI/2, M_PI+M_PI/2, YES);
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CGPathAddLineToPoint(path, NULL, strPoint.x, strPoint.y - strRadius);
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CGPathCloseSubpath(path);
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CGContextAddPath(context, path);
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CGContextSetFillColorWithColor(context, color.CGColor);
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CGContextFillPath(context);
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UIImage *tmp = UIGraphicsGetImageFromCurrentImageContext();
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CGPathRelease(path);
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UIGraphicsEndImageContext();
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return tmp;
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}
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- (void)setMenu
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{
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CGFloat W = 70;
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_widthSlider = [self defaultSliderWithWidth:_menuView.width - W - 20];
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_widthSlider.left = 10;
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_widthSlider.top = _menuView.height/2 - _widthSlider.height/2;
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[_widthSlider addTarget:self action:@selector(widthSliderDidChange:) forControlEvents:UIControlEventValueChanged];
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_widthSlider.value = 0.1;
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_widthSlider.backgroundColor = [UIColor colorWithPatternImage:[self widthSliderBackground]];
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[_menuView addSubview:_widthSlider];
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_strokePreview = [[UIView alloc] initWithFrame:CGRectMake(0, 0, W - 5, W - 5)];
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_strokePreview.layer.cornerRadius = _strokePreview.height/2;
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_strokePreview.layer.borderWidth = 1;
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_strokePreview.layer.borderColor = [[[CLImageEditorTheme theme] toolbarTextColor] CGColor];
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_strokePreview.center = CGPointMake(_menuView.width-W/2, _menuView.height/2);
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[_menuView addSubview:_strokePreview];
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_strokePreviewBackground = [[UIView alloc] initWithFrame:_strokePreview.frame];
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_strokePreviewBackground.layer.cornerRadius = _strokePreviewBackground.height/2;
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_strokePreviewBackground.alpha = 0.3;
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[_strokePreviewBackground addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(strokePreviewDidTap:)]];
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[_menuView insertSubview:_strokePreviewBackground aboveSubview:_strokePreview];
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_strokePreview.backgroundColor = [[CLImageEditorTheme theme] toolbarTextColor];
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_strokePreviewBackground.backgroundColor = _strokePreview.backgroundColor;
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_eraserIcon = [[UIImageView alloc] initWithFrame:_strokePreview.frame];
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_eraserIcon.image = [self imageForKey:kCLSplashToolEraserIconName defaultImageName:@"btn_eraser.png"];
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_eraserIcon.hidden = YES;
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[_menuView addSubview:_eraserIcon];
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[self widthSliderDidChange:_widthSlider];
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_menuView.clipsToBounds = NO;
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}
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- (void)widthSliderDidChange:(UISlider*)sender
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{
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CGFloat scale = MAX(0.05, _widthSlider.value);
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_strokePreview.transform = CGAffineTransformMakeScale(scale, scale);
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_strokePreview.layer.borderWidth = 2/scale;
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}
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- (void)strokePreviewDidTap:(UITapGestureRecognizer*)sender
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{
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_eraserIcon.hidden = !_eraserIcon.hidden;
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}
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- (void)drawingViewDidPan:(UIPanGestureRecognizer*)sender
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{
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CGPoint currentDraggingPosition = [sender locationInView:_drawingView];
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if(sender.state == UIGestureRecognizerStateBegan){
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_prevDraggingPosition = currentDraggingPosition;
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}
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if(sender.state != UIGestureRecognizerStateEnded){
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[self drawLine:_prevDraggingPosition to:currentDraggingPosition];
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_drawingView.image = [_grayImage maskedImage:_maskImage];
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}
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_prevDraggingPosition = currentDraggingPosition;
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}
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-(void)drawLine:(CGPoint)from to:(CGPoint)to
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{
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CGSize size = _drawingView.frame.size;
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UIGraphicsBeginImageContextWithOptions(size, NO, 0.0);
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CGContextRef context = UIGraphicsGetCurrentContext();
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CGFloat strokeWidth = MAX(1, _widthSlider.value * 65);
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if(_maskImage==nil){
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CGContextSetFillColorWithColor(context, [[UIColor blackColor] CGColor]);
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CGContextFillRect(context, CGRectMake(0, 0, size.width, size.height));
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}
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else{
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[_maskImage drawAtPoint:CGPointZero];
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}
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CGContextSetLineWidth(context, strokeWidth);
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CGContextSetLineCap(context, kCGLineCapRound);
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if(!_eraserIcon.hidden){
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CGContextSetStrokeColorWithColor(context, [[UIColor blackColor] CGColor]);
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}
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else{
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CGContextSetStrokeColorWithColor(context, [[UIColor whiteColor] CGColor]);
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}
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CGContextMoveToPoint(context, from.x, from.y);
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CGContextAddLineToPoint(context, to.x, to.y);
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CGContextStrokePath(context);
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_maskImage = UIGraphicsGetImageFromCurrentImageContext();
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UIGraphicsEndImageContext();
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}
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- (UIImage*)buildImageWithBackgroundImage:(UIImage*)backgroundImage
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{
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_grayImage = [backgroundImage grayScaleImage];
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UIGraphicsBeginImageContextWithOptions(_originalImageSize, NO, backgroundImage.scale);
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[backgroundImage drawAtPoint:CGPointZero];
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[[_grayImage maskedImage:_maskImage] drawInRect:CGRectMake(0, 0, _originalImageSize.width, _originalImageSize.height)];
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UIImage *tmp = UIGraphicsGetImageFromCurrentImageContext();
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UIGraphicsEndImageContext();
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return tmp;
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}
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@end
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