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//
// UIImage+Common.m
// Coding_iOS
//
// Created by 王 原闯 on 14-8-4.
// Copyright (c) 2014年 Coding. All rights reserved.
//
#import "UIImage+Common.h"
@implementation UIImage (Common)
+(UIImage *)imageWithColor:(UIColor *)aColor{
return [UIImage imageWithColor:aColor withFrame:CGRectMake(0, 0, 1, 1)];
}
+(UIImage *)imageWithColor:(UIColor *)aColor withFrame:(CGRect)aFrame{
UIGraphicsBeginImageContext(aFrame.size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [aColor CGColor]);
CGContextFillRect(context, aFrame);
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return img;
}
//对图片尺寸进行压缩--
-(UIImage*)scaledToSize:(CGSize)targetSize
{
UIImage *sourceImage = self;
UIImage *newImage = nil;
CGSize imageSize = sourceImage.size;
CGFloat scaleFactor = 0.0;
if (CGSizeEqualToSize(imageSize, targetSize) == NO)
{
CGFloat widthFactor = targetSize.width / imageSize.width;
CGFloat heightFactor = targetSize.height / imageSize.height;
if (widthFactor < heightFactor)
scaleFactor = heightFactor; // scale to fit height
else
scaleFactor = widthFactor; // scale to fit width
}
scaleFactor = MIN(scaleFactor, 1.0);
CGFloat targetWidth = imageSize.width* scaleFactor;
CGFloat targetHeight = imageSize.height* scaleFactor;
targetSize = CGSizeMake(floorf(targetWidth), floorf(targetHeight));
UIGraphicsBeginImageContext(targetSize); // this will crop
[sourceImage drawInRect:CGRectMake(0, 0, ceilf(targetWidth), ceilf(targetHeight))];
newImage = UIGraphicsGetImageFromCurrentImageContext();
if(newImage == nil){
DebugLog(@"could not scale image");
newImage = sourceImage;
}
UIGraphicsEndImageContext();
return newImage;
}
-(UIImage*)scaledToSize:(CGSize)targetSize highQuality:(BOOL)highQuality{
if (highQuality) {
targetSize = CGSizeMake(2*targetSize.width, 2*targetSize.height);
}
return [self scaledToSize:targetSize];
}
-(UIImage *)scaledToMaxSize:(CGSize)size{
CGFloat width = size.width;
CGFloat height = size.height;
CGFloat oldWidth = self.size.width;
CGFloat oldHeight = self.size.height;
CGFloat scaleFactor = (oldWidth > oldHeight) ? width / oldWidth : height / oldHeight;
// 如果不需要缩放
if (scaleFactor > 1.0) {
return self;
}
CGFloat newHeight = oldHeight * scaleFactor;
CGFloat newWidth = oldWidth * scaleFactor;
CGSize newSize = CGSizeMake(newWidth, newHeight);
UIGraphicsBeginImageContextWithOptions(newSize, NO, 0.0);
[self drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)];
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
}
+ (UIImage *)fullResolutionImageFromALAsset:(ALAsset *)asset{
ALAssetRepresentation *assetRep = [asset defaultRepresentation];
CGImageRef imgRef = [assetRep fullResolutionImage];
UIImage *img = [UIImage imageWithCGImage:imgRef scale:assetRep.scale orientation:(UIImageOrientation)assetRep.orientation];
return img;
}
+ (UIImage *)fullScreenImageALAsset:(ALAsset *)asset{
ALAssetRepresentation *assetRep = [asset defaultRepresentation];
CGImageRef imgRef = [assetRep fullScreenImage];//fullScreenImage已经调整过方向了
UIImage *img = [UIImage imageWithCGImage:imgRef];
return img;
}
+ (UIImage *)imageWithFileType:(NSString *)fileType{
fileType = [fileType lowercaseString];
NSString *iconName;
//XXX(s)
if ([fileType hasPrefix:@"doc"]) {
iconName = @"icon_file_doc";
}else if ([fileType hasPrefix:@"ppt"]) {
iconName = @"icon_file_ppt";
}else if ([fileType hasPrefix:@"pdf"]) {
iconName = @"icon_file_pdf";
}else if ([fileType hasPrefix:@"xls"]) {
iconName = @"icon_file_xls";
}
//XXX
else if ([fileType isEqualToString:@"txt"]) {
iconName = @"icon_file_txt";
}else if ([fileType isEqualToString:@"ai"]) {
iconName = @"icon_file_ai";
}else if ([fileType isEqualToString:@"apk"]) {
iconName = @"icon_file_apk";
}else if ([fileType isEqualToString:@"md"]) {
iconName = @"icon_file_md";
}else if ([fileType isEqualToString:@"psd"]) {
iconName = @"icon_file_psd";
}
//XXX||YYY
else if ([fileType isEqualToString:@"zip"] || [fileType isEqualToString:@"rar"] || [fileType isEqualToString:@"arj"]) {
iconName = @"icon_file_zip";
}else if ([fileType isEqualToString:@"html"]
|| [fileType isEqualToString:@"xml"]
|| [fileType isEqualToString:@"java"]
|| [fileType isEqualToString:@"h"]
|| [fileType isEqualToString:@"m"]
|| [fileType isEqualToString:@"cpp"]
|| [fileType isEqualToString:@"json"]
|| [fileType isEqualToString:@"cs"]
|| [fileType isEqualToString:@"go"]) {
iconName = @"icon_file_code";
}else if ([fileType isEqualToString:@"avi"]
|| [fileType isEqualToString:@"rmvb"]
|| [fileType isEqualToString:@"rm"]
|| [fileType isEqualToString:@"asf"]
|| [fileType isEqualToString:@"divx"]
|| [fileType isEqualToString:@"mpeg"]
|| [fileType isEqualToString:@"mpe"]
|| [fileType isEqualToString:@"wmv"]
|| [fileType isEqualToString:@"mp4"]
|| [fileType isEqualToString:@"mkv"]
|| [fileType isEqualToString:@"vob"]) {
iconName = @"icon_file_movie";
}else if ([fileType isEqualToString:@"mp3"]
|| [fileType isEqualToString:@"wav"]
|| [fileType isEqualToString:@"mid"]
|| [fileType isEqualToString:@"asf"]
|| [fileType isEqualToString:@"mpg"]
|| [fileType isEqualToString:@"tti"]) {
iconName = @"icon_file_music";
}
//unknown
else{
iconName = @"icon_file_unknown";
}
return [UIImage imageNamed:iconName];
}
@end