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//
// ZDStickerView.m
//
// Created by Seonghyun Kim on 5/29/13.
// Copyright (c) 2013 scipi. All rights reserved.
//
#import <QuartzCore/QuartzCore.h>
#import "ZDStickerView.h"
#import "SPGripViewBorderView.h"
#define kSPUserResizableViewGlobalInset 5.0
#define kSPUserResizableViewDefaultMinWidth 48.0
#define kSPUserResizableViewInteractiveBorderSize 10.0
#define kZDStickerViewControlSize 36.0
@interface ZDStickerView ()
@property (nonatomic, strong) SPGripViewBorderView *borderView;
@property (strong, nonatomic) UIImageView *resizingControl;
@property (strong, nonatomic) UIImageView *deleteControl;
@property (strong, nonatomic) UIImageView *customControl;
@property (nonatomic) BOOL preventsLayoutWhileResizing;
@property (nonatomic) CGFloat deltaAngle;
@property (nonatomic) CGPoint prevPoint;
@property (nonatomic) CGAffineTransform startTransform;
@property (nonatomic) CGPoint touchStart;
@end
@implementation ZDStickerView
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
// Drawing code
}
*/
#ifdef ZDSTICKERVIEW_LONGPRESS
- (void)longPress:(UIPanGestureRecognizer *)recognizer
{
if (recognizer.state == UIGestureRecognizerStateBegan)
{
if ([self.stickerViewDelegate respondsToSelector:@selector(stickerViewDidLongPressed:)])
{
[self.stickerViewDelegate stickerViewDidLongPressed:self];
}
}
}
#endif
- (void)singleTap:(UIPanGestureRecognizer *)recognizer
{
if ([self.stickerViewDelegate respondsToSelector:@selector(stickerViewDidClose:)])
{
[self.stickerViewDelegate stickerViewDidClose:self];
}
if (NO == self.preventsDeleting)
{
UIView *close = (UIView *)[recognizer view];
[close.superview removeFromSuperview];
}
}
- (void)customTap:(UIPanGestureRecognizer *)recognizer
{
if (NO == self.preventsCustomButton)
{
if ([self.stickerViewDelegate respondsToSelector:@selector(stickerViewDidCustomButtonTap:)])
{
[self.stickerViewDelegate stickerViewDidCustomButtonTap:self];
}
}
}
- (void)resizeTranslate:(UIPanGestureRecognizer *)recognizer
{
if ([recognizer state] == UIGestureRecognizerStateBegan)
{
[self enableTransluceny:YES];
self.prevPoint = [recognizer locationInView:self];
[self setNeedsDisplay];
}
else if ([recognizer state] == UIGestureRecognizerStateChanged)
{
[self enableTransluceny:YES];
// preventing from the picture being shrinked too far by resizing
if (self.bounds.size.width < self.minWidth || self.bounds.size.height < self.minHeight)
{
self.bounds = CGRectMake(self.bounds.origin.x,
self.bounds.origin.y,
self.minWidth+1,
self.minHeight+1);
self.resizingControl.frame =CGRectMake(self.bounds.size.width-kZDStickerViewControlSize,
self.bounds.size.height-kZDStickerViewControlSize,
kZDStickerViewControlSize,
kZDStickerViewControlSize);
self.deleteControl.frame = CGRectMake(0, 0,
kZDStickerViewControlSize, kZDStickerViewControlSize);
self.customControl.frame =CGRectMake(self.bounds.size.width-kZDStickerViewControlSize,
0,
kZDStickerViewControlSize,
kZDStickerViewControlSize);
self.prevPoint = [recognizer locationInView:self];
}
// Resizing
else
{
CGPoint point = [recognizer locationInView:self];
float wChange = 0.0, hChange = 0.0;
wChange = (point.x - self.prevPoint.x);
float wRatioChange = (wChange/(float)self.bounds.size.width);
hChange = wRatioChange * self.bounds.size.height;
if (ABS(wChange) > 50.0f || ABS(hChange) > 50.0f)
{
self.prevPoint = [recognizer locationOfTouch:0 inView:self];
return;
}
self.bounds = CGRectMake(self.bounds.origin.x, self.bounds.origin.y,
self.bounds.size.width + (wChange),
self.bounds.size.height + (hChange));
self.resizingControl.frame =CGRectMake(self.bounds.size.width-kZDStickerViewControlSize,
self.bounds.size.height-kZDStickerViewControlSize,
kZDStickerViewControlSize, kZDStickerViewControlSize);
self.deleteControl.frame = CGRectMake(0, 0,
kZDStickerViewControlSize, kZDStickerViewControlSize);
self.customControl.frame =CGRectMake(self.bounds.size.width-kZDStickerViewControlSize,
0,
kZDStickerViewControlSize,
kZDStickerViewControlSize);
self.prevPoint = [recognizer locationOfTouch:0 inView:self];
}
/* Rotation */
float ang = atan2([recognizer locationInView:self.superview].y - self.center.y,
[recognizer locationInView:self.superview].x - self.center.x);
float angleDiff = self.deltaAngle - ang;
if (NO == self.preventsResizing)
{
self.transform = CGAffineTransformMakeRotation(-angleDiff);
}
self.borderView.frame = CGRectInset(self.bounds, kSPUserResizableViewGlobalInset, kSPUserResizableViewGlobalInset);
[self.borderView setNeedsDisplay];
[self setNeedsDisplay];
}
else if ([recognizer state] == UIGestureRecognizerStateEnded)
{
[self enableTransluceny:NO];
self.prevPoint = [recognizer locationInView:self];
[self setNeedsDisplay];
}
}
- (void)setupDefaultAttributes
{
self.borderView = [[SPGripViewBorderView alloc] initWithFrame:CGRectInset(self.bounds, kSPUserResizableViewGlobalInset, kSPUserResizableViewGlobalInset)];
[self.borderView setHidden:YES];
[self addSubview:self.borderView];
if (kSPUserResizableViewDefaultMinWidth > self.bounds.size.width*0.5)
{
self.minWidth = kSPUserResizableViewDefaultMinWidth;
self.minHeight = self.bounds.size.height * (kSPUserResizableViewDefaultMinWidth/self.bounds.size.width);
}
else
{
self.minWidth = self.bounds.size.width*0.5;
self.minHeight = self.bounds.size.height*0.5;
}
self.preventsPositionOutsideSuperview = YES;
self.preventsLayoutWhileResizing = YES;
self.preventsResizing = NO;
self.preventsDeleting = NO;
self.preventsCustomButton = YES;
self.translucencySticker = YES;
#ifdef ZDSTICKERVIEW_LONGPRESS
UILongPressGestureRecognizer*longpress = [[UILongPressGestureRecognizer alloc]
initWithTarget:self
action:@selector(longPress:)];
[self addGestureRecognizer:longpress];
#endif
self.deleteControl = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0,
kZDStickerViewControlSize, kZDStickerViewControlSize)];
self.deleteControl.backgroundColor = [UIColor clearColor];
self.deleteControl.image = [UIImage imageNamed:@"ZDStickerView.bundle/ZDBtn3.png"];
self.deleteControl.userInteractionEnabled = YES;
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc]
initWithTarget:self
action:@selector(singleTap:)];
[self.deleteControl addGestureRecognizer:singleTap];
[self addSubview:self.deleteControl];
self.resizingControl = [[UIImageView alloc]initWithFrame:CGRectMake(self.frame.size.width-kZDStickerViewControlSize,
self.frame.size.height-kZDStickerViewControlSize,
kZDStickerViewControlSize, kZDStickerViewControlSize)];
self.resizingControl.backgroundColor = [UIColor clearColor];
self.resizingControl.userInteractionEnabled = YES;
self.resizingControl.image = [UIImage imageNamed:@"ZDStickerView.bundle/ZDBtn2.png.png"];
UIPanGestureRecognizer*panResizeGesture = [[UIPanGestureRecognizer alloc]
initWithTarget:self
action:@selector(resizeTranslate:)];
[self.resizingControl addGestureRecognizer:panResizeGesture];
[self addSubview:self.resizingControl];
self.customControl = [[UIImageView alloc]initWithFrame:CGRectMake(self.frame.size.width-kZDStickerViewControlSize,
0,
kZDStickerViewControlSize, kZDStickerViewControlSize)];
self.customControl.backgroundColor = [UIColor clearColor];
self.customControl.userInteractionEnabled = YES;
self.customControl.image = nil;
UITapGestureRecognizer *customTapGesture = [[UITapGestureRecognizer alloc]
initWithTarget:self
action:@selector(customTap:)];
[self.customControl addGestureRecognizer:customTapGesture];
[self addSubview:self.customControl];
self.deltaAngle = atan2(self.frame.origin.y+self.frame.size.height - self.center.y,
self.frame.origin.x+self.frame.size.width - self.center.x);
}
- (id)initWithFrame:(CGRect)frame
{
if ((self = [super initWithFrame:frame]))
{
[self setupDefaultAttributes];
}
return self;
}
- (id)initWithCoder:(NSCoder *)aDecoder
{
if ((self = [super initWithCoder:aDecoder]))
{
[self setupDefaultAttributes];
}
return self;
}
- (void)setContentView:(UIView *)newContentView
{
[self.contentView removeFromSuperview];
_contentView = newContentView;
self.contentView.frame = CGRectInset(self.bounds,
kSPUserResizableViewGlobalInset + kSPUserResizableViewInteractiveBorderSize/2,
kSPUserResizableViewGlobalInset + kSPUserResizableViewInteractiveBorderSize/2);
self.contentView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
[self addSubview:self.contentView];
for (UIView *subview in [self.contentView subviews])
{
[subview setFrame:CGRectMake(0, 0,
self.contentView.frame.size.width,
self.contentView.frame.size.height)];
subview.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
}
[self bringSubviewToFront:self.borderView];
[self bringSubviewToFront:self.resizingControl];
[self bringSubviewToFront:self.deleteControl];
[self bringSubviewToFront:self.customControl];
}
- (void)setFrame:(CGRect)newFrame
{
[super setFrame:newFrame];
self.contentView.frame = CGRectInset(self.bounds,
kSPUserResizableViewGlobalInset + kSPUserResizableViewInteractiveBorderSize/2,
kSPUserResizableViewGlobalInset + kSPUserResizableViewInteractiveBorderSize/2);
self.contentView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
for (UIView *subview in [self.contentView subviews])
{
[subview setFrame:CGRectMake(0, 0,
self.contentView.frame.size.width,
self.contentView.frame.size.height)];
subview.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
}
self.borderView.frame = CGRectInset(self.bounds,
kSPUserResizableViewGlobalInset,
kSPUserResizableViewGlobalInset);
self.resizingControl.frame =CGRectMake(self.bounds.size.width-kZDStickerViewControlSize,
self.bounds.size.height-kZDStickerViewControlSize,
kZDStickerViewControlSize,
kZDStickerViewControlSize);
self.deleteControl.frame = CGRectMake(0, 0,
kZDStickerViewControlSize, kZDStickerViewControlSize);
self.customControl.frame =CGRectMake(self.bounds.size.width-kZDStickerViewControlSize,
0,
kZDStickerViewControlSize,
kZDStickerViewControlSize);
[self.borderView setNeedsDisplay];
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
if ([self isEditingHandlesHidden])
{
return;
}
[self enableTransluceny:YES];
UITouch *touch = [touches anyObject];
self.touchStart = [touch locationInView:self.superview];
if ([self.stickerViewDelegate respondsToSelector:@selector(stickerViewDidBeginEditing:)])
{
[self.stickerViewDelegate stickerViewDidBeginEditing:self];
}
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
[self enableTransluceny:NO];
// Notify the delegate we've ended our editing session.
if ([self.stickerViewDelegate respondsToSelector:@selector(stickerViewDidEndEditing:)])
{
[self.stickerViewDelegate stickerViewDidEndEditing:self];
}
}
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
[self enableTransluceny:NO];
// Notify the delegate we've ended our editing session.
if ([self.stickerViewDelegate respondsToSelector:@selector(stickerViewDidCancelEditing:)])
{
[self.stickerViewDelegate stickerViewDidCancelEditing:self];
}
}
- (void)translateUsingTouchLocation:(CGPoint)touchPoint
{
CGPoint newCenter = CGPointMake(self.center.x + touchPoint.x - self.touchStart.x,
self.center.y + touchPoint.y - self.touchStart.y);
if (self.preventsPositionOutsideSuperview)
{
// Ensure the translation won't cause the view to move offscreen.
CGFloat midPointX = CGRectGetMidX(self.bounds);
if (newCenter.x > self.superview.bounds.size.width - midPointX)
{
newCenter.x = self.superview.bounds.size.width - midPointX;
}
if (newCenter.x < midPointX)
{
newCenter.x = midPointX;
}
CGFloat midPointY = CGRectGetMidY(self.bounds);
if (newCenter.y > self.superview.bounds.size.height - midPointY)
{
newCenter.y = self.superview.bounds.size.height - midPointY;
}
if (newCenter.y < midPointY)
{
newCenter.y = midPointY;
}
}
self.center = newCenter;
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
if ([self isEditingHandlesHidden])
{
return;
}
[self enableTransluceny:YES];
CGPoint touchLocation = [[touches anyObject] locationInView:self];
if (CGRectContainsPoint(self.resizingControl.frame, touchLocation))
{
return;
}
CGPoint touch = [[touches anyObject] locationInView:self.superview];
[self translateUsingTouchLocation:touch];
self.touchStart = touch;
}
- (void)hideDelHandle
{
self.deleteControl.hidden = YES;
}
- (void)showDelHandle
{
self.deleteControl.hidden = NO;
}
- (void)hideEditingHandles
{
self.resizingControl.hidden = YES;
self.deleteControl.hidden = YES;
self.customControl.hidden = YES;
[self.borderView setHidden:YES];
}
- (void)showEditingHandles
{
if (NO == self.preventsCustomButton)
{
self.customControl.hidden = NO;
}
else
{
self.customControl.hidden = YES;
}
if (NO == self.preventsDeleting)
{
self.deleteControl.hidden = NO;
}
else
{
self.deleteControl.hidden = YES;
}
if (NO == self.preventsResizing)
{
self.resizingControl.hidden = NO;
}
else
{
self.resizingControl.hidden = YES;
}
[self.borderView setHidden:NO];
}
- (void)showCustomHandle
{
self.customControl.hidden = NO;
}
- (void)hideCustomHandle
{
self.customControl.hidden = YES;
}
- (void)setButton:(ZDSTICKERVIEW_BUTTONS)type image:(UIImage*)image
{
switch (type)
{
case ZDSTICKERVIEW_BUTTON_RESIZE:
self.resizingControl.image = image;
break;
case ZDSTICKERVIEW_BUTTON_DEL:
self.deleteControl.image = image;
break;
case ZDSTICKERVIEW_BUTTON_CUSTOM:
self.customControl.image = image;
break;
default:
break;
}
}
- (BOOL)isEditingHandlesHidden
{
return self.borderView.hidden;
}
- (void)enableTransluceny:(BOOL)state
{
if (self.translucencySticker == YES)
{
if (state == YES)
{
self.alpha = 0.65;
}
else
{
self.alpha = 1.0;
}
}
}
@end
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