1.7.4版本 加入对圆形裁剪的支持

TZImagePickerController.podspec

 Pod::Spec.new do |s|
   s.name         = "TZImagePickerController"
-  s.version      = "1.7.3"
+  s.version      = "1.7.4"
   s.summary      = "A clone of UIImagePickerController, support picking multiple photos、original photo and video"
   s.homepage     = "https://github.com/banchichen/TZImagePickerController"
   s.license      = "MIT"
   s.author       = { "banchichen" => "tanzhenios@foxmail.com" }
   s.platform     = :ios
   s.ios.deployment_target = "6.0"
-  s.source       = { :git => "https://github.com/banchichen/TZImagePickerController.git", :tag => "1.7.3" }
+  s.source       = { :git => "https://github.com/banchichen/TZImagePickerController.git", :tag => "1.7.4" }
   s.requires_arc = true
   s.resources    = "TZImagePickerController/TZImagePickerController/*.{png,xib,nib,bundle}"
   s.source_files = "TZImagePickerController/TZImagePickerController/*.{h,m}"

TZImagePickerController/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.7.3</string>
+	<string>1.7.4</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>

TZImagePickerController/TZImagePickerController/TZImageCropManager.h

@@ -12,7 +12,7 @@
 @interface TZImageCropManager : NSObject
 
 /// 裁剪框背景的处理
-+ (void)overlayClippingWithView:(UIView *)view cropRect:(CGRect)cropRect containerView:(UIView *)containerView;
++ (void)overlayClippingWithView:(UIView *)view cropRect:(CGRect)cropRect containerView:(UIView *)containerView needCircleCrop:(BOOL)needCircleCrop;
 
 /*
  1.7.2 为了解决多位同学对于图片裁剪的需求，我这两天有空便在研究图片裁剪
@@ -24,4 +24,7 @@
 /// 获得裁剪后的图片
 + (UIImage *)cropImageView:(UIImageView *)imageView toRect:(CGRect)rect zoomScale:(double)zoomScale containerView:(UIView *)containerView;
 
+/// 获取圆形图片
++ (UIImage *)circularClipImage:(UIImage *)image;
+
 @end

TZImagePickerController/TZImagePickerController/TZImageCropManager.m

@@ -12,22 +12,19 @@
 @implementation TZImageCropManager
 
 /// 裁剪框背景的处理
-+ (void)overlayClippingWithView:(UIView *)view cropRect:(CGRect)cropRect containerView:(UIView *)containerView {
-    CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
-    CGMutablePathRef path = CGPathCreateMutable();
-    
-    // Left side of _cropBgView
-    CGPathAddRect(path, nil, CGRectMake(0, 0, cropRect.origin.x, containerView.tz_height));
-    // Right side of _cropBgView
-    CGPathAddRect(path, nil, CGRectMake(CGRectGetMaxX(cropRect), 0, view.tz_width - cropRect.origin.x - cropRect.size.width, containerView.tz_height));
-    // Top side of _cropBgView
-    CGPathAddRect(path, nil, CGRectMake(0, 0, view.tz_width, cropRect.origin.y));
-    // Bottom side _cropBgView
-    CGPathAddRect(path, nil, CGRectMake(0, CGRectGetMaxY(cropRect), view.tz_width, containerView.tz_height - cropRect.origin.y + cropRect.size.height));
-    
-    maskLayer.path = path;
-    view.layer.mask = maskLayer;
-    CGPathRelease(path);
++ (void)overlayClippingWithView:(UIView *)view cropRect:(CGRect)cropRect containerView:(UIView *)containerView needCircleCrop:(BOOL)needCircleCrop {
+    UIBezierPath *path= [UIBezierPath bezierPathWithRect:[UIScreen mainScreen].bounds];
+    CAShapeLayer *layer = [CAShapeLayer layer];
+    if (needCircleCrop) { // 圆形裁剪框
+        [path appendPath:[UIBezierPath bezierPathWithArcCenter:containerView.center radius:cropRect.size.width / 2 startAngle:0 endAngle: 2 * M_PI clockwise:NO]];
+    } else { // 矩形裁剪框
+        [path appendPath:[UIBezierPath bezierPathWithRect:cropRect]];
+    }
+    layer.path = path.CGPath;
+    layer.fillRule = kCAFillRuleEvenOdd;
+    layer.fillColor = [[UIColor blackColor] CGColor];
+    layer.opacity = 0.5;
+    [view.layer addSublayer:layer];
 }
 
 /// 获得裁剪后的图片
@@ -46,7 +43,7 @@
     CGImageRef imageRef = [self newTransformedImage:transform
                                         sourceImage:imageView.image.CGImage
                                          sourceSize:imageView.image.size
-                                        outputWidth:imageView.image.size.width
+                                        outputWidth:rect.size.width * [UIScreen mainScreen].scale
                                            cropSize:rect.size
                                       imageViewSize:imageView.frame.size];
     UIImage *cropedImage = [UIImage imageWithCGImage:imageRef];
@@ -95,4 +92,20 @@
     return resultRef;
 }
 
+/// 获取圆形图片
++ (UIImage *)circularClipImage:(UIImage *)image {
+    UIGraphicsBeginImageContextWithOptions(image.size, NO, [UIScreen mainScreen].scale);
+    
+    CGContextRef ctx = UIGraphicsGetCurrentContext();
+    CGRect rect = CGRectMake(0, 0, image.size.width, image.size.height);
+    CGContextAddEllipseInRect(ctx, rect);
+    CGContextClip(ctx);
+    
+    [image drawInRect:rect];
+    UIImage *circleImage = UIGraphicsGetImageFromCurrentImageContext();
+    
+    UIGraphicsEndImageContext();
+    return circleImage;
+}
+
 @end

TZImagePickerController/TZImagePickerController/TZImagePickerController.h

@@ -4,7 +4,7 @@
 //
 //  Created by 谭真 on 15/12/24.
 //  Copyright © 2015年 谭真. All rights reserved.
-//  version 1.7.3 - 2016.12.6
+//  version 1.7.4 - 2016.12.6
 
 /*
  经过测试，比起xib的方式，把TZAssetCell改用纯代码的方式来写，滑动帧数明显提高了（约提高10帧左右）
@@ -94,11 +94,12 @@
 
 /// Single selection mode, valid when maxImagesCount = 1
 /// 单选模式,maxImagesCount为1时才生效
-@property (nonatomic, assign) BOOL showSelectBtn; ///< 在单选模式下，照片列表页中，显示选择按钮,默认为NO
-@property (nonatomic, assign) BOOL allowCrop;     ///< 允许裁剪,默认为YES，showSelectBtn为NO才生效
-@property (nonatomic, assign) CGRect cropRect;    ///< 裁剪框的尺寸
+@property (nonatomic, assign) BOOL showSelectBtn;   ///< 在单选模式下，照片列表页中，显示选择按钮,默认为NO
+@property (nonatomic, assign) BOOL allowCrop;       ///< 允许裁剪,默认为YES，showSelectBtn为NO才生效
+@property (nonatomic, assign) CGRect cropRect;      ///< 裁剪框的尺寸
+@property (nonatomic, assign) BOOL needCircleCrop;  ///< 需要圆形裁剪框
+@property (nonatomic, assign) NSInteger circleCropRadius;  ///< 圆形裁剪框半径大小
 @property (nonatomic, copy) void (^cropViewSettingBlock)(UIView *cropView);     ///< 自定义裁剪框的其他属性
-@property (nonatomic, copy) void (^cropBgViewSettingBlock)(UIView *cropBgView); ///< 自定义裁剪框背景的其他属性
 
 - (void)showAlertWithTitle:(NSString *)title;
 - (void)showProgressHUD;

TZImagePickerController/TZImagePickerController/TZImagePickerController.m

@@ -4,7 +4,7 @@
 //
 //  Created by 谭真 on 15/12/24.
 //  Copyright © 2015年 谭真. All rights reserved.
-//  version 1.7.3 - 2016.12.6
+//  version 1.7.4 - 2016.12.6
 
 #import "TZImagePickerController.h"
 #import "TZPhotoPickerController.h"
@@ -302,6 +302,11 @@
     }
 }
 
+- (void)setCircleCropRadius:(NSInteger)circleCropRadius {
+    _circleCropRadius = circleCropRadius;
+    _cropRect = CGRectMake(self.view.tz_width / 2 - circleCropRadius, self.view.tz_height / 2 - _circleCropRadius, _circleCropRadius * 2, _circleCropRadius * 2);
+}
+
 - (CGRect)cropRect {
     if (_cropRect.size.width > 0) {
         return _cropRect;

TZImagePickerController/TZImagePickerController/TZPhotoPreviewController.m

@@ -183,15 +183,10 @@
     if (!_tzImagePickerVc.showSelectBtn && _tzImagePickerVc.allowCrop) {
         _cropBgView = [UIView new];
         _cropBgView.userInteractionEnabled = NO;
-        static CGFloat rgb = 34 / 255.0;
-        _cropBgView.backgroundColor = [UIColor colorWithRed:rgb green:rgb blue:rgb alpha:1.0];
-        _cropBgView.alpha = 0.5;
+        _cropBgView.backgroundColor = [UIColor clearColor];
         _cropBgView.frame = self.view.bounds;
         [self.view addSubview:_cropBgView];
-        if (_tzImagePickerVc.cropBgViewSettingBlock) {
-            _tzImagePickerVc.cropBgViewSettingBlock(_cropBgView);
-        }
-        [TZImageCropManager overlayClippingWithView:_cropBgView cropRect:_tzImagePickerVc.cropRect containerView:self.view];
+        [TZImageCropManager overlayClippingWithView:_cropBgView cropRect:_tzImagePickerVc.cropRect containerView:self.view needCircleCrop:_tzImagePickerVc.needCircleCrop];
         
         _cropView = [UIView new];
         _cropView.userInteractionEnabled = NO;
@@ -199,6 +194,10 @@
         _cropView.frame = _tzImagePickerVc.cropRect;
         _cropView.layer.borderColor = [UIColor whiteColor].CGColor;
         _cropView.layer.borderWidth = 1.0;
+        if (_tzImagePickerVc.needCircleCrop) {
+            _cropView.layer.cornerRadius = _tzImagePickerVc.cropRect.size.width / 2;
+            _cropView.clipsToBounds = YES;
+        }
         [self.view addSubview:_cropView];
         if (_tzImagePickerVc.cropViewSettingBlock) {
             _tzImagePickerVc.cropViewSettingBlock(_cropView);
@@ -294,6 +293,9 @@
         NSIndexPath *indexPath = [NSIndexPath indexPathForItem:_currentIndex inSection:0];
         TZPhotoPreviewCell *cell = (TZPhotoPreviewCell *)[_collectionView cellForItemAtIndexPath:indexPath];
         UIImage *cropedImage = [TZImageCropManager cropImageView:cell.imageView toRect:_tzImagePickerVc.cropRect zoomScale:cell.scrollView.zoomScale containerView:self.view];
+        if (_tzImagePickerVc.needCircleCrop) {
+            cropedImage = [TZImageCropManager circularClipImage:cropedImage];
+        }
         if (self.doneButtonClickBlockCropMode) {
             TZAssetModel *model = _models[_currentIndex];
             self.doneButtonClickBlockCropMode(cropedImage,model.asset);

TZImagePickerController/ViewController.m

@@ -223,15 +223,12 @@
     /// 5. 单选模式,maxImagesCount为1时才生效
     imagePickerVc.showSelectBtn = NO;
     imagePickerVc.allowCrop = YES;
-    // NSInteger cropWH = self.view.tz_width - 150;
-    // imagePickerVc.cropRect = CGRectMake(20, (self.view.tz_height - cropWH) / 2 + 50, cropWH, cropWH - 100);
+    imagePickerVc.needCircleCrop = YES;
+    imagePickerVc.circleCropRadius = 100;
+    /*
     [imagePickerVc setCropViewSettingBlock:^(UIView *cropView) {
         cropView.layer.borderColor = [UIColor redColor].CGColor;
         cropView.layer.borderWidth = 2.0;
-    }];
-    /*
-    [imagePickerVc setCropBgViewSettingBlock:^(UIView *cropBgView) {
-        cropBgView.alpha = 0.5;
     }];*/
 #pragma mark - 到这里为止