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TUIKit/TUIMultimediaPlugin/Common/TUIMultimediaImageUtil.m

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+// Copyright (c) 2024 Tencent. All rights reserved.
+// Author: eddardliu
+
+#import "TUIMultimediaImageUtil.h"
+
+@implementation TUIMultimediaImageUtil
++ (UIImage *)imageFromView:(UIView *)view {
+    UIGraphicsBeginImageContext(view.bounds.size);
+    CGContextRef ctx = UIGraphicsGetCurrentContext();
+    [view.layer renderInContext:ctx];
+    UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
+    UIGraphicsEndImageContext();
+    return img;
+}
+
++ (UIImage *)imageFromView:(UIView *)view withRotate:(CGFloat)rotate {
+    // view旋转后占用的矩形大小--最终画布大小
+    CGSize finalSize = CGSizeMake(CGRectGetWidth(view.frame), CGRectGetHeight(view.frame));
+    // view的原始大小
+    CGSize originSize = CGSizeMake(CGRectGetWidth(view.bounds), CGRectGetHeight(view.bounds));
+
+    UIGraphicsBeginImageContext(finalSize);
+    CGContextRef ctx = UIGraphicsGetCurrentContext();
+    // 根据画布大小，先移动到中心点
+    CGContextTranslateCTM(ctx, finalSize.width / 2, finalSize.height / 2);
+    // 旋转坐标系
+    CGContextRotateCTM(ctx, rotate);
+    // 根据原始大小确定绘制view的起始位置
+    CGContextTranslateCTM(ctx, -originSize.width / 2, -originSize.height / 2);
+    [view.layer renderInContext:ctx];
+    UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
+    UIGraphicsEndImageContext();
+    return img;
+}
+
++ (UIImage *)simpleImageFromImage:(UIImage *)img withTintColor:(UIColor *)tintColor {
+    // We want to keep alpha, set opaque to NO; Use 0.0f for scale to use the scale factor of the
+    // device’s main screen.
+    UIGraphicsBeginImageContextWithOptions(img.size, NO, 0.0f);
+    [tintColor setFill];
+    CGRect bounds = CGRectMake(0, 0, img.size.width, img.size.height);
+    UIRectFill(bounds);
+
+    // Draw the tinted image in context
+    [img drawInRect:bounds blendMode:kCGBlendModeDestinationIn alpha:1.0f];
+
+    UIImage *tintedImage = UIGraphicsGetImageFromCurrentImageContext();
+    UIGraphicsEndImageContext();
+
+    return tintedImage;
+}
+
++ (UIImage *)imageFromImage:(UIImage *)img withTintColor:(UIColor *)tintColor {
+    UIImage *imgWithTintColor = [self simpleImageFromImage:img withTintColor:tintColor];
+    if (img.imageAsset == nil) {
+        return imgWithTintColor;
+    }
+    UITraitCollection *const scaleTraitCollection = [UITraitCollection currentTraitCollection];
+    UITraitCollection *const darkUnscaledTraitCollection = [UITraitCollection traitCollectionWithUserInterfaceStyle:UIUserInterfaceStyleDark];
+    UITraitCollection *const darkScaledTraitCollection =
+        [UITraitCollection traitCollectionWithTraitsFromCollections:@[ scaleTraitCollection, darkUnscaledTraitCollection ]];
+
+    UIImage *imageDark = [img.imageAsset imageWithTraitCollection:darkScaledTraitCollection];
+    if (img != imageDark) {
+        [imgWithTintColor.imageAsset registerImage:[self simpleImageFromImage:imageDark withTintColor:tintColor] withTraitCollection:darkScaledTraitCollection];
+    }
+
+    return imgWithTintColor;
+}
+
++ (UIImage *)resizeImage:(UIImage *)img toSize:(CGSize)size {
+    UIGraphicsImageRenderer *renderer = [[UIGraphicsImageRenderer alloc] initWithSize:size];
+    return [renderer imageWithActions:^(UIGraphicsImageRendererContext *_Nonnull rendererContext) {
+      [img drawInRect:CGRectMake(0, 0, size.width, size.height)];
+    }];
+}
+
++ (UIImage *)rotateImage:(UIImage *)image angle:(float)angle {
+    CGFloat radians = angle * (M_PI / 180.0);
+    CGSize size = image.size;
+    UIGraphicsImageRenderer *renderer = [[UIGraphicsImageRenderer alloc] initWithSize:size];
+    UIImage *rotatedImage = [renderer imageWithActions:^(UIGraphicsImageRendererContext *context) {
+        CGContextRef cgContext = context.CGContext;
+        CGContextTranslateCTM(cgContext, size.width / 2, size.height / 2);
+        CGContextRotateCTM(cgContext, radians);
+        CGContextTranslateCTM(cgContext, -size.width / 2, -size.height / 2);
+        [image drawInRect:CGRectMake(0, 0, size.width, size.height)];
+    }];
+
+    return rotatedImage;
+}
+
+
++ (UIImage *)imageWithColor:(UIColor *)color {
+    return [self imageWithColor:color size:CGSizeMake(1, 1)];
+}
+
++ (UIImage *)imageWithColor:(UIColor *)color size:(CGSize)size {
+    UIGraphicsImageRenderer *renderer = [[UIGraphicsImageRenderer alloc] initWithSize:size];
+    return [renderer imageWithActions:^(UIGraphicsImageRendererContext *_Nonnull rendererContext) {
+      [color set];
+      [rendererContext fillRect:CGRectMake(0, 0, size.width, size.height)];
+    }];
+}
+
++ (UIImage *)createBlueCircleWithWhiteBorder : (CGSize)size withColor:(UIColor*) color{
+    UIGraphicsBeginImageContextWithOptions(size, NO, 0.0);
+    CGContextRef context = UIGraphicsGetCurrentContext();
+    if (!context) return nil;
+    
+
+    CGContextSetFillColorWithColor(context, [UIColor yellowColor].CGColor);
+    
+    
+    CGFloat centerX = size.width / 2;
+    CGFloat centerY = size.width / 2;
+    CGFloat radius = size.width / 2;
+
+    CGContextSetFillColorWithColor(context, [UIColor whiteColor].CGColor);
+    CGContextSetLineWidth(context, 0);
+    CGContextAddArc(context, centerX, centerY, radius, 0, 2 * M_PI, 0);
+    CGContextDrawPath(context, kCGPathFillStroke);
+    
+    
+    CGContextSetFillColorWithColor(context, color.CGColor);
+    CGContextSetLineWidth(context, 0);
+    CGContextAddArc(context, centerX, centerY, 5, 0, 2 * M_PI, 0);
+    CGContextDrawPath(context, kCGPathFillStroke);
+    
+    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
+    UIGraphicsEndImageContext();
+    
+    return image;
+}
+@end