author | Wuzzy <Wuzzy2@mail.ru> |
Wed, 15 May 2019 04:06:47 +0200 | |
changeset 14974 | 6c17ef373079 |
parent 12872 | 00215a7ec5f5 |
permissions | -rw-r--r-- |
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/* |
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* Hedgewars-iOS, a Hedgewars port for iOS devices |
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* Copyright (c) 2009-2012 Vittorio Giovara <vittorio.giovara@gmail.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; version 2 of the License |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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*/ |
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#import "UIImageExtra.h" |
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@implementation UIImage (extra) |
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|
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parents:
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- (UIImage *)scaleToSize:(CGSize)size { |
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// Create a bitmap graphics context; this will also set it as the current context |
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CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); |
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CGContextRef context = CGBitmapContextCreate(NULL, size.width, size.height, 8, 4 * size.width, colorSpace, kCGImageAlphaPremultipliedFirst); |
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// draw the image inside the context |
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CGFloat screenScale = [[UIScreen mainScreen] safeScale]; |
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CGContextDrawImage(context, CGRectMake(0, 0, size.width*screenScale, size.height*screenScale), self.CGImage); |
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// Create bitmap image info from pixel data in current context |
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CGImageRef imageRef = CGBitmapContextCreateImage(context); |
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// Create a new UIImage object |
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UIImage *resultImage; |
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if ([UIImage respondsToSelector:@selector(imageWithCGImage:scale:orientation:)]) |
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resultImage = [UIImage imageWithCGImage:imageRef scale:screenScale orientation:UIImageOrientationUp]; |
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else |
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resultImage = [UIImage imageWithCGImage:imageRef]; |
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// Release colorspace, context and bitmap information |
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CGColorSpaceRelease(colorSpace); |
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CGContextRelease(context); |
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CFRelease(imageRef); |
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return resultImage; |
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} |
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12872
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antonc27 <antonc27@mail.ru>
parents:
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- (UIImage *)mergeWith:(UIImage *)secondImage atPoint:(CGPoint)secondImagePoint { |
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if (secondImage == nil) { |
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DLog(@"Warning, secondImage == nil"); |
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return self; |
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} |
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CGFloat screenScale = [[UIScreen mainScreen] safeScale]; |
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int w = self.size.width * screenScale; |
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int h = self.size.height * screenScale; |
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int yOffset = self.size.height - secondImage.size.height + secondImagePoint.y; |
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if (w == 0 || h == 0) { |
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DLog(@"Cannot have 0 dimesions"); |
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return self; |
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} |
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// Create a bitmap graphics context; this will also set it as the current context |
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CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); |
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koda
parents:
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CGContextRef context = CGBitmapContextCreate(NULL, w, h+yOffset, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst); |
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// draw the two images in the current context |
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CGContextDrawImage(context, CGRectMake(0, 0, self.size.width*screenScale, self.size.height*screenScale), [self CGImage]); |
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CGContextDrawImage(context, CGRectMake(secondImagePoint.x*screenScale, secondImagePoint.y*screenScale, secondImage.size.width*screenScale, secondImage.size.height*screenScale), [secondImage CGImage]); |
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// Create bitmap image info from pixel data in current context |
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CGImageRef imageRef = CGBitmapContextCreateImage(context); |
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// Create a new UIImage object |
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UIImage *resultImage; |
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if ([UIImage respondsToSelector:@selector(imageWithCGImage:scale:orientation:)]) |
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resultImage = [UIImage imageWithCGImage:imageRef scale:screenScale orientation:UIImageOrientationUp]; |
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else |
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resultImage = [UIImage imageWithCGImage:imageRef]; |
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// Release colorspace, context and bitmap information |
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koda
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CGColorSpaceRelease(colorSpace); |
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CGContextRelease(context); |
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koda
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CFRelease(imageRef); |
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return resultImage; |
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} |
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||
12872
00215a7ec5f5
- BIG CHANGE: Convert iOS project to use ARC
antonc27 <antonc27@mail.ru>
parents:
10108
diff
changeset
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- (id)initWithContentsOfFile:(NSString *)path andCutAt:(CGRect)rect { |
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// load image from path |
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UIImage *image = [[UIImage alloc] initWithContentsOfFile: path]; |
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if (nil != image) { |
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// get its CGImage representation with a give size |
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CGImageRef cgImage = CGImageCreateWithImageInRect([image CGImage], rect); |
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// clean memory |
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// create a UIImage from the CGImage (memory must be allocated already) |
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UIImage *sprite = [self initWithCGImage:cgImage]; |
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// clean memory |
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CGImageRelease(cgImage); |
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// return resulting image |
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return sprite; |
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} else { |
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DLog(@"error - image == nil"); |
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return nil; |
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} |
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} |
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12872
00215a7ec5f5
- BIG CHANGE: Convert iOS project to use ARC
antonc27 <antonc27@mail.ru>
parents:
10108
diff
changeset
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- (UIImage *)cutAt:(CGRect)rect { |
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CGImageRef cgImage = CGImageCreateWithImageInRect([self CGImage], rect); |
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UIImage *res = [UIImage imageWithCGImage:cgImage]; |
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CGImageRelease(cgImage); |
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return res; |
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} |
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12872
00215a7ec5f5
- BIG CHANGE: Convert iOS project to use ARC
antonc27 <antonc27@mail.ru>
parents:
10108
diff
changeset
|
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- (UIImage *)convertToGrayScale { |
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// Create image rectangle with current image width/height |
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CGRect imageRect = CGRectMake(0, 0, self.size.width, self.size.height); |
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// Grayscale color space |
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CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceGray(); |
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// Create bitmap content with current image size and grayscale colorspace |
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CGContextRef context = CGBitmapContextCreate(nil, self.size.width, self.size.height, 8, 0, colorSpace, kCGImageAlphaNone); |
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// Draw image into current context, with specified rectangle |
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// using previously defined context (with grayscale colorspace) |
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CGContextDrawImage(context, imageRect, [self CGImage]); |
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// Create bitmap image info from pixel data in current context |
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CGImageRef imageRef = CGBitmapContextCreateImage(context); |
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// Create a new UIImage object |
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UIImage *newImage = [UIImage imageWithCGImage:imageRef]; |
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// Release colorspace, context and bitmap information |
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CFRelease(imageRef); |
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CGContextRelease(context); |
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CGColorSpaceRelease(colorSpace); |
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// Return the new grayscale image |
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return newImage; |
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} |
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155 |
// by http://iphonedevelopertips.com/cocoa/how-to-mask-an-image.html turned into a category by koda |
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156 |
-(UIImage*) maskImageWith:(UIImage *)maskImage { |
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// prepare the reference image |
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CGImageRef maskRef = [maskImage CGImage]; |
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// create the mask using parameters of the mask reference |
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CGImageRef mask = CGImageMaskCreate(CGImageGetWidth(maskRef), |
162 |
CGImageGetHeight(maskRef), |
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CGImageGetBitsPerComponent(maskRef), |
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CGImageGetBitsPerPixel(maskRef), |
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CGImageGetBytesPerRow(maskRef), |
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CGImageGetDataProvider(maskRef), NULL, false); |
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// create an image in the current context |
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CGImageRef masked = CGImageCreateWithMask([self CGImage], mask); |
170 |
CGImageRelease(mask); |
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UIImage* retImage = [UIImage imageWithCGImage:masked]; |
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CGImageRelease(masked); |
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return retImage; |
176 |
} |
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// by http://blog.sallarp.com/iphone-uiimage-round-corners/ turned into a category by koda |
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void addRoundedRectToPath(CGContextRef context, CGRect rect, CGFloat ovalWidth, CGFloat ovalHeight) { |
180 |
CGFloat fw, fh; |
|
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if (ovalWidth == 0 || ovalHeight == 0) { |
182 |
CGContextAddRect(context, rect); |
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return; |
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} |
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CGContextSaveGState(context); |
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CGContextTranslateCTM (context, CGRectGetMinX(rect), CGRectGetMinY(rect)); |
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CGContextScaleCTM (context, ovalWidth, ovalHeight); |
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fw = CGRectGetWidth (rect) / ovalWidth; |
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fh = CGRectGetHeight (rect) / ovalHeight; |
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CGContextMoveToPoint(context, fw, fh/2); |
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CGContextAddArcToPoint(context, fw, fh, fw/2, fh, 1); |
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CGContextAddArcToPoint(context, 0, fh, 0, fh/2, 1); |
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CGContextAddArcToPoint(context, 0, 0, fw/2, 0, 1); |
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CGContextAddArcToPoint(context, fw, 0, fw, fh/2, 1); |
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CGContextClosePath(context); |
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CGContextRestoreGState(context); |
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} |
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||
12872
00215a7ec5f5
- BIG CHANGE: Convert iOS project to use ARC
antonc27 <antonc27@mail.ru>
parents:
10108
diff
changeset
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- (UIImage *)makeRoundCornersOfSize:(CGSize)sizewh { |
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CGFloat cornerWidth = sizewh.width; |
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CGFloat cornerHeight = sizewh.height; |
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CGFloat screenScale = [[UIScreen mainScreen] safeScale]; |
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koda
parents:
4461
diff
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CGFloat w = self.size.width * screenScale; |
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parents:
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204 |
CGFloat h = self.size.height * screenScale; |
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CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); |
207 |
CGContextRef context = CGBitmapContextCreate(NULL, w, h, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst); |
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|
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CGContextBeginPath(context); |
210 |
CGRect rect = CGRectMake(0, 0, w, h); |
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211 |
addRoundedRectToPath(context, rect, cornerWidth, cornerHeight); |
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212 |
CGContextClosePath(context); |
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213 |
CGContextClip(context); |
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CGContextDrawImage(context, CGRectMake(0, 0, w, h), [self CGImage]); |
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CGImageRef imageMasked = CGBitmapContextCreateImage(context); |
218 |
CGContextRelease(context); |
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CGColorSpaceRelease(colorSpace); |
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UIImage *resultImage; |
222 |
if ([UIImage respondsToSelector:@selector(imageWithCGImage:scale:orientation:)]) |
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223 |
resultImage = [UIImage imageWithCGImage:imageMasked scale:screenScale orientation:UIImageOrientationUp]; |
|
224 |
else |
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225 |
resultImage = [UIImage imageWithCGImage:imageMasked]; |
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CGImageRelease(imageMasked); |
3697 | 227 |
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return resultImage; |
3547 | 229 |
} |
230 |
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// by http://www.sixtemia.com/journal/2010/06/23/uiimage-negative-color-effect/ |
12872
00215a7ec5f5
- BIG CHANGE: Convert iOS project to use ARC
antonc27 <antonc27@mail.ru>
parents:
10108
diff
changeset
|
232 |
- (UIImage *)convertToNegative { |
3903 | 233 |
UIGraphicsBeginImageContext(self.size); |
234 |
CGContextSetBlendMode(UIGraphicsGetCurrentContext(), kCGBlendModeCopy); |
|
235 |
[self drawInRect:CGRectMake(0, 0, self.size.width, self.size.height)]; |
|
236 |
CGContextSetBlendMode(UIGraphicsGetCurrentContext(), kCGBlendModeDifference); |
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237 |
CGContextSetFillColorWithColor(UIGraphicsGetCurrentContext(),[UIColor whiteColor].CGColor); |
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238 |
CGContextFillRect(UIGraphicsGetCurrentContext(), CGRectMake(0, 0, self.size.width, self.size.height)); |
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koda
parents:
3910
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changeset
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239 |
// create an image from the current contex (not thread safe) |
3903 | 240 |
UIImage *result = UIGraphicsGetImageFromCurrentImageContext(); |
241 |
UIGraphicsEndImageContext(); |
|
242 |
return result; |
|
243 |
} |
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244 |
||
12872
00215a7ec5f5
- BIG CHANGE: Convert iOS project to use ARC
antonc27 <antonc27@mail.ru>
parents:
10108
diff
changeset
|
245 |
+ (UIImage *)whiteImage:(CGSize)ofSize { |
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CGFloat w = ofSize.width; |
247 |
CGFloat h = ofSize.height; |
|
4478 | 248 |
DLog(@"w: %f, h: %f", w, h); |
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249 |
|
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CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); |
251 |
CGContextRef context = CGBitmapContextCreate(NULL, w, h, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst); |
|
252 |
||
253 |
CGContextBeginPath(context); |
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changeset
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254 |
CGContextSetRGBFillColor(context, 1.0, 1.0, 1.0, 1.0); |
dd47efbdec46
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koda
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changeset
|
255 |
CGContextFillRect(context,CGRectMake(0,0,ofSize.width,ofSize.height)); |
dd47efbdec46
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koda
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changeset
|
256 |
|
4356 | 257 |
CGImageRef image = CGBitmapContextCreateImage(context); |
258 |
CGContextRelease(context); |
|
259 |
CGColorSpaceRelease(colorSpace); |
|
260 |
||
261 |
UIImage *bkgImg = [UIImage imageWithCGImage:image]; |
|
262 |
CGImageRelease(image); |
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koda
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diff
changeset
|
263 |
return bkgImg; |
dd47efbdec46
move all preview drawing code into its own class (for a simplified and more readable MapConfigViewController)
koda
parents:
3903
diff
changeset
|
264 |
} |
dd47efbdec46
move all preview drawing code into its own class (for a simplified and more readable MapConfigViewController)
koda
parents:
3903
diff
changeset
|
265 |
|
12872
00215a7ec5f5
- BIG CHANGE: Convert iOS project to use ARC
antonc27 <antonc27@mail.ru>
parents:
10108
diff
changeset
|
266 |
+ (UIImage *)drawHogsRepeated:(NSInteger)manyTimes { |
6209 | 267 |
NSString *imgString = [[NSString alloc] initWithFormat:@"%@/hedgehog.png",[[NSBundle mainBundle] resourcePath]]; |
268 |
UIImage *hogSprite = [[UIImage alloc] initWithContentsOfFile:imgString]; |
|
269 |
CGFloat screenScale = [[UIScreen mainScreen] safeScale]; |
|
270 |
int w = hogSprite.size.width * screenScale; |
|
271 |
int h = hogSprite.size.height * screenScale; |
|
272 |
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); |
|
273 |
CGContextRef context = CGBitmapContextCreate(NULL, w * 3, h, 8, 4 * w * 3, colorSpace, kCGImageAlphaPremultipliedFirst); |
|
274 |
||
275 |
// draw the two images in the current context |
|
276 |
for (int i = 0; i < manyTimes; i++) |
|
277 |
CGContextDrawImage(context, CGRectMake(i*8*screenScale, 0, w, h), [hogSprite CGImage]); |
|
278 |
||
279 |
// Create bitmap image info from pixel data in current context |
|
280 |
CGImageRef imageRef = CGBitmapContextCreateImage(context); |
|
281 |
||
282 |
// Create a new UIImage object |
|
283 |
UIImage *resultImage; |
|
284 |
if ([UIImage respondsToSelector:@selector(imageWithCGImage:scale:orientation:)]) |
|
285 |
resultImage = [UIImage imageWithCGImage:imageRef scale:screenScale orientation:UIImageOrientationUp]; |
|
286 |
else |
|
287 |
resultImage = [UIImage imageWithCGImage:imageRef]; |
|
288 |
||
289 |
// Release colorspace, context and bitmap information |
|
290 |
CGColorSpaceRelease(colorSpace); |
|
291 |
CGContextRelease(context); |
|
292 |
CFRelease(imageRef); |
|
293 |
||
294 |
return resultImage; |
|
295 |
} |
|
296 |
||
6078
8c0cc07731e5
headers cleanup, converted some function-only sources into proper class method files, more use of OOP power, removed some 'respondsToSelector' calls, moved defines into their own header, more use of objc categories
koda
parents:
5503
diff
changeset
|
297 |
// this routine checks for the PNG size without loading it in memory |
8c0cc07731e5
headers cleanup, converted some function-only sources into proper class method files, more use of OOP power, removed some 'respondsToSelector' calls, moved defines into their own header, more use of objc categories
koda
parents:
5503
diff
changeset
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// https://github.com/steipete/PSFramework/blob/master/PSFramework%20Version%200.3/PhotoshopFramework/PSMetaDataFunctions.m |
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- BIG CHANGE: Convert iOS project to use ARC
antonc27 <antonc27@mail.ru>
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+ (CGSize)imageSizeFromMetadataOf:(NSString *)aFileName { |
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// File Name to C String. |
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const char *fileName = [aFileName UTF8String]; |
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// source file |
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FILE *infile = fopen(fileName, "rb"); |
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if (infile == NULL) { |
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DLog(@"Can't open the file: %@", aFileName); |
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return CGSizeZero; |
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} |
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|
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// Bytes Buffer. |
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unsigned char buffer[30]; |
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// Grab Only First Bytes. |
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fread(buffer, 1, 30, infile); |
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// Close File. |
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fclose(infile); |
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// PNG Signature. |
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unsigned char png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10}; |
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// Compare File signature. |
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if ((int)(memcmp(&buffer[0], &png_signature[0], 8))) { |
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DLog(@"The file (%@) is not a PNG file", aFileName); |
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return CGSizeZero; |
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} |
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|
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// Calc Sizes. Isolate only four bytes of each size (width, height). |
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int width[4]; |
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int height[4]; |
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for (int d = 16; d < (16 + 4); d++) { |
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width[d-16] = buffer[d]; |
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height[d-16] = buffer[d+4]; |
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} |
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|
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// Convert bytes to Long (Integer) |
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long resultWidth = (width[0] << (int)24) | (width[1] << (int)16) | (width[2] << (int)8) | width[3]; |
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long resultHeight = (height[0] << (int)24) | (height[1] << (int)16) | (height[2] << (int)8) | height[3]; |
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|
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// Return Size. |
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return CGSizeMake(resultWidth,resultHeight); |
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} |
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@end |