AFPopupView.m

//
//  AFPopupView.m
//  AFPopup
//
//  Created by Alvaro Franco on 3/7/14.
//  Copyright (c) 2014 AlvaroFranco. All rights reserved.
//

#import "AFPopupView.h"
#import <QuartzCore/QuartzCore.h>

#define CATransform3DPerspective(t, x, y) (CATransform3DConcat(t, CATransform3DMake(1, 0, 0, x, 0, 1, 0, y, 0, 0, 1, 0, 0, 0, 0, 1)))
#define CATransform3DMakePerspective(x, y) (CATransform3DPerspective(CATransform3DIdentity, x, y))

CG_INLINE CATransform3D
CATransform3DMake(CGFloat m11, CGFloat m12, CGFloat m13, CGFloat m14,
				  CGFloat m21, CGFloat m22, CGFloat m23, CGFloat m24,
				  CGFloat m31, CGFloat m32, CGFloat m33, CGFloat m34,
				  CGFloat m41, CGFloat m42, CGFloat m43, CGFloat m44)
{
	CATransform3D t;
	t.m11 = m11; t.m12 = m12; t.m13 = m13; t.m14 = m14;
	t.m21 = m21; t.m22 = m22; t.m23 = m23; t.m24 = m24;
	t.m31 = m31; t.m32 = m32; t.m33 = m33; t.m34 = m34;
	t.m41 = m41; t.m42 = m42; t.m43 = m43; t.m44 = m44;
	return t;
}

@interface AFPopupView ()

@property (nonatomic, strong) UIView *modalView;
@property (nonatomic, strong) UIView *blackView;
@property (nonatomic, strong) UIView *backgroundShadowView;
@property (nonatomic, strong) UIImageView *renderImage;

@end

@implementation AFPopupView

+(AFPopupView *)popupWithView:(UIView *)popupView {
    
    UIWindow *keyWindow = [[UIApplication sharedApplication] keyWindow];
    UIView *rootView = keyWindow.rootViewController.view;
    CGRect rect = CGRectMake(0, 0, rootView.frame.size.width, rootView.frame.size.height);
    
    if (rootView.transform.b != 0 && rootView.transform.c != 0) {
        rect = CGRectMake(0, 0, rootView.frame.size.height, rootView.frame.size.width);
    }
    
    AFPopupView *view = [[AFPopupView alloc] initWithFrame:rect];
    
    view.modalView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, [[UIScreen mainScreen]bounds].size.width, [[UIScreen mainScreen]bounds].size.height - (50 * 2))];
    view.modalView.backgroundColor = [UIColor clearColor];
    view.modalView.autoresizingMask = UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleHeight |
    UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin |
    UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleWidth;
    
    view.blackView = [[UIView alloc] initWithFrame:view.frame];
    view.blackView.backgroundColor = [UIColor blackColor];
    view.blackView.autoresizingMask = view.modalView.autoresizingMask;
    
    view.backgroundShadowView = [[UIView alloc] initWithFrame:view.frame];
    view.backgroundShadowView.backgroundColor = [UIColor blackColor];
    view.backgroundShadowView.alpha = 0.0;
    view.backgroundShadowView.autoresizingMask = view.modalView.autoresizingMask;
    
    view.renderImage = [[UIImageView alloc] initWithFrame:view.frame];
    view.renderImage.autoresizingMask = view.modalView.autoresizingMask;
    view.renderImage.contentMode = UIViewContentModeScaleToFill;
    
    [view.modalView addSubview:popupView];
    [view addSubview:view.blackView];
    [view addSubview:view.renderImage];
    [view addSubview:view.backgroundShadowView];
    [view addSubview:view.modalView];
    
    UITapGestureRecognizer *hideGesture = [[UITapGestureRecognizer alloc] initWithTarget:view action:@selector(hideByTap)];
    [view.backgroundShadowView addGestureRecognizer:hideGesture];
    
    return view;
}

-(void)show {
    
    UIWindow *keyWindow = [[UIApplication sharedApplication] keyWindow];
    UIView *rootView = keyWindow.rootViewController.view;
    
    CGRect rect = CGRectMake(0, 0, rootView.frame.size.width, rootView.frame.size.height);
    if(rootView.transform.b != 0 && rootView.transform.c != 0)
        rect = CGRectMake(0, 0, rootView.frame.size.height, rootView.frame.size.width);
    self.frame = rect;
    
    UIImage *rootViewRenderImage = [self imageWithView:rootView];
    _renderImage.image = rootViewRenderImage;
    
    _backgroundShadowView.alpha = 0.0;
    [rootView addSubview:self];
    _modalView.center = CGPointMake(self.frame.size.width/2.0, _modalView.frame.size.height * 1.5);
    
    [UIView animateWithDuration:0.2
                          delay:0
                        options:UIViewAnimationOptionCurveEaseInOut
                     animations:^{
                         
                         _backgroundShadowView.alpha = 0.4;
                         _renderImage.layer.transform = CATransform3DMakePerspective(0, -0.0007);
                     }
     
                     completion:^(BOOL finished) {
                         
                         [UIView animateWithDuration:0.2 animations:^{
                             
                             float newWidht = _renderImage.frame.size.width * 0.7;
                             float newHeight = _renderImage.frame.size.height * 0.7;
                             _renderImage.frame = CGRectMake(([[UIScreen mainScreen]bounds].size.width - newWidht) / 2, 22, newWidht, newHeight);
                             _renderImage.layer.transform = CATransform3DMakePerspective(0, 0);
                         } completion:^(BOOL finished) {
                             [UIView animateWithDuration:0.1 animations:^{
                             }];
                         }];
                     }];
    
    [UIView animateWithDuration:0.4 delay:0
                        options:UIViewAnimationOptionCurveEaseInOut
                     animations:^{
                         _modalView.center = self.center;
                     }
                     completion:^(BOOL finished) {
                         
                     }];

}

-(void)hide {
    
    [UIView animateWithDuration:0.4
                          delay:0
                        options:UIViewAnimationOptionCurveEaseInOut
                     animations:^{
                         _modalView.center = CGPointMake(self.frame.size.width/2.0, _modalView.frame.size.height * 1.5);
                     }
                     completion:^(BOOL finished) {
                         
                     }];
    
    [UIView animateWithDuration:0.2
                          delay:0
                        options:UIViewAnimationOptionCurveEaseInOut
                     animations:^{
                         
                         _backgroundShadowView.alpha = 0.0;
                         _renderImage.layer.transform = CATransform3DMakePerspective(0, -0.0007);
                     }
     
                     completion:^(BOOL finished) {

                         [UIView animateWithDuration:0.2 animations:^{
                             
                             _renderImage.frame = [[UIScreen mainScreen]bounds];
                             _renderImage.layer.transform = CATransform3DMakePerspective(0, 0);
                         } completion:^(BOOL finished) {
                             [self removeFromSuperview];
                         }];
                     }];
}

-(void)hideByTap {
    if (_hideOnBackgroundTap) {
        [self hide];
    }
}

-(UIImage *)imageWithView:(UIView *)view {
    
    UIGraphicsBeginImageContextWithOptions(_renderImage.frame.size, view.opaque, [[UIScreen mainScreen] scale]);
    [view.layer renderInContext:UIGraphicsGetCurrentContext()];
    
    UIImage *backgroundImage = UIGraphicsGetImageFromCurrentImageContext();
    
    UIGraphicsEndImageContext();
    
    return backgroundImage;
}

@end