--- a/project_files/HedgewarsMobile/Classes/UIImageExtra.m Fri Oct 28 17:41:39 2011 +0200
+++ b/project_files/HedgewarsMobile/Classes/UIImageExtra.m Fri Oct 28 18:26:17 2011 +0200
@@ -24,63 +24,21 @@
@implementation UIImage (extra)
-CGFloat getScreenScale(void) {
- float scale = 1.0f;
- if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)])
- scale = [[UIScreen mainScreen] scale];
- return scale;
-}
-
-(UIImage *)scaleToSize:(CGSize) size {
- DLog(@"warning - this is a very expensive operation, you should avoid using it");
-
- // Create a bitmap graphics context; this will also set it as the current context
- if (UIGraphicsBeginImageContextWithOptions != NULL)
- UIGraphicsBeginImageContextWithOptions(size, NO, getScreenScale());
- else
- UIGraphicsBeginImageContext(size);
-
- // Draw the scaled image in the current context
- [self drawInRect:CGRectMake(0, 0, size.width, size.height)];
-
- // Create a new image from current context
- UIImage* scaledImage = UIGraphicsGetImageFromCurrentImageContext();
-
- // Pop the current context from the stack
- UIGraphicsEndImageContext();
-
- // Return our new scaled image (autoreleased)
- return scaledImage;
-}
-
--(UIImage *)mergeWith:(UIImage *)secondImage atPoint:(CGPoint) secondImagePoint {
- if (secondImage == nil) {
- DLog(@"Warning, secondImage == nil");
- return self;
- }
- CGFloat screenScale = getScreenScale();
- int w = self.size.width * screenScale;
- int h = self.size.height * screenScale;
-
- if (w == 0 || h == 0) {
- DLog(@"Can have 0 dimesions");
- return self;
- }
-
// Create a bitmap graphics context; this will also set it as the current context
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
- CGContextRef context = CGBitmapContextCreate(NULL, w, h, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst);
-
- // draw the two images in the current context
- CGContextDrawImage(context, CGRectMake(0, 0, self.size.width*screenScale, self.size.height*screenScale), [self CGImage]);
- CGContextDrawImage(context, CGRectMake(secondImagePoint.x*screenScale, secondImagePoint.y*screenScale, secondImage.size.width*screenScale, secondImage.size.height*screenScale), [secondImage CGImage]);
-
+ CGContextRef context = CGBitmapContextCreate(NULL, size.width, size.height, 8, 4 * size.width, colorSpace, kCGImageAlphaPremultipliedFirst);
+
+ // draw the image inside the context
+ CGFloat screenScale = [[UIScreen mainScreen] safeScale];
+ CGContextDrawImage(context, CGRectMake(0, 0, size.width*screenScale, size.height*screenScale), self.CGImage);
+
// Create bitmap image info from pixel data in current context
CGImageRef imageRef = CGBitmapContextCreateImage(context);
-
+
// Create a new UIImage object
UIImage *resultImage;
- if ([self respondsToSelector:@selector(imageWithCGImage:scale:orientation:)])
+ if ([UIImage respondsToSelector:@selector(imageWithCGImage:scale:orientation:)])
resultImage = [UIImage imageWithCGImage:imageRef scale:screenScale orientation:UIImageOrientationUp];
else
resultImage = [UIImage imageWithCGImage:imageRef];
@@ -89,7 +47,48 @@
CGColorSpaceRelease(colorSpace);
CGContextRelease(context);
CFRelease(imageRef);
-
+
+ return resultImage;
+}
+
+-(UIImage *)mergeWith:(UIImage *)secondImage atPoint:(CGPoint) secondImagePoint {
+ if (secondImage == nil) {
+ DLog(@"Warning, secondImage == nil");
+ return self;
+ }
+ CGFloat screenScale = [[UIScreen mainScreen] safeScale];
+ int w = self.size.width * screenScale;
+ int h = self.size.height * screenScale;
+ int yOffset = self.size.height - secondImage.size.height + secondImagePoint.y;
+
+ if (w == 0 || h == 0) {
+ DLog(@"Cannot have 0 dimesions");
+ return self;
+ }
+
+ // Create a bitmap graphics context; this will also set it as the current context
+ CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
+ CGContextRef context = CGBitmapContextCreate(NULL, w, h+yOffset, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst);
+
+ // draw the two images in the current context
+ CGContextDrawImage(context, CGRectMake(0, 0, self.size.width*screenScale, self.size.height*screenScale), [self CGImage]);
+ CGContextDrawImage(context, CGRectMake(secondImagePoint.x*screenScale, secondImagePoint.y*screenScale, secondImage.size.width*screenScale, secondImage.size.height*screenScale), [secondImage CGImage]);
+
+ // Create bitmap image info from pixel data in current context
+ CGImageRef imageRef = CGBitmapContextCreateImage(context);
+
+ // Create a new UIImage object
+ UIImage *resultImage;
+ if ([UIImage respondsToSelector:@selector(imageWithCGImage:scale:orientation:)])
+ resultImage = [UIImage imageWithCGImage:imageRef scale:screenScale orientation:UIImageOrientationUp];
+ else
+ resultImage = [UIImage imageWithCGImage:imageRef];
+
+ // Release colorspace, context and bitmap information
+ CGColorSpaceRelease(colorSpace);
+ CGContextRelease(context);
+ CFRelease(imageRef);
+
return resultImage;
}
@@ -203,7 +202,7 @@
-(UIImage *)makeRoundCornersOfSize:(CGSize) sizewh {
CGFloat cornerWidth = sizewh.width;
CGFloat cornerHeight = sizewh.height;
- CGFloat screenScale = getScreenScale();
+ CGFloat screenScale = [[UIScreen mainScreen] safeScale];
CGFloat w = self.size.width * screenScale;
CGFloat h = self.size.height * screenScale;
@@ -222,15 +221,14 @@
CGContextRelease(context);
CGColorSpaceRelease(colorSpace);
- UIImage *newImage;
- if ([self respondsToSelector:@selector(imageWithCGImage:scale:orientation:)])
- newImage = [UIImage imageWithCGImage:imageMasked scale:screenScale orientation:UIImageOrientationUp];
+ UIImage *resultImage;
+ if ([UIImage respondsToSelector:@selector(imageWithCGImage:scale:orientation:)])
+ resultImage = [UIImage imageWithCGImage:imageMasked scale:screenScale orientation:UIImageOrientationUp];
else
- newImage = [UIImage imageWithCGImage:imageMasked];
-
+ resultImage = [UIImage imageWithCGImage:imageMasked];
CGImageRelease(imageMasked);
- return newImage;
+ return resultImage;
}
// by http://www.sixtemia.com/journal/2010/06/23/uiimage-negative-color-effect/
@@ -268,4 +266,81 @@
return bkgImg;
}
++(UIImage *)drawHogsRepeated:(NSInteger) manyTimes {
+ NSString *imgString = [[NSString alloc] initWithFormat:@"%@/hedgehog.png",[[NSBundle mainBundle] resourcePath]];
+ UIImage *hogSprite = [[UIImage alloc] initWithContentsOfFile:imgString];
+ [imgString release];
+ CGFloat screenScale = [[UIScreen mainScreen] safeScale];
+ int w = hogSprite.size.width * screenScale;
+ int h = hogSprite.size.height * screenScale;
+ CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
+ CGContextRef context = CGBitmapContextCreate(NULL, w * 3, h, 8, 4 * w * 3, colorSpace, kCGImageAlphaPremultipliedFirst);
+
+ // draw the two images in the current context
+ for (int i = 0; i < manyTimes; i++)
+ CGContextDrawImage(context, CGRectMake(i*8*screenScale, 0, w, h), [hogSprite CGImage]);
+ [hogSprite release];
+
+ // Create bitmap image info from pixel data in current context
+ CGImageRef imageRef = CGBitmapContextCreateImage(context);
+
+ // Create a new UIImage object
+ UIImage *resultImage;
+ if ([UIImage respondsToSelector:@selector(imageWithCGImage:scale:orientation:)])
+ resultImage = [UIImage imageWithCGImage:imageRef scale:screenScale orientation:UIImageOrientationUp];
+ else
+ resultImage = [UIImage imageWithCGImage:imageRef];
+
+ // Release colorspace, context and bitmap information
+ CGColorSpaceRelease(colorSpace);
+ CGContextRelease(context);
+ CFRelease(imageRef);
+
+ return resultImage;
+}
+
+// this routine checks for the PNG size without loading it in memory
+// https://github.com/steipete/PSFramework/blob/master/PSFramework%20Version%200.3/PhotoshopFramework/PSMetaDataFunctions.m
++(CGSize) imageSizeFromMetadataOf:(NSString *)aFileName {
+ // File Name to C String.
+ const char *fileName = [aFileName UTF8String];
+ // source file
+ FILE *infile = fopen(fileName, "rb");
+ if (infile == NULL) {
+ DLog(@"Can't open the file: %@", aFileName);
+ return CGSizeZero;
+ }
+
+ // Bytes Buffer.
+ unsigned char buffer[30];
+ // Grab Only First Bytes.
+ fread(buffer, 1, 30, infile);
+ // Close File.
+ fclose(infile);
+
+ // PNG Signature.
+ unsigned char png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
+
+ // Compare File signature.
+ if ((int)(memcmp(&buffer[0], &png_signature[0], 8))) {
+ DLog(@"The file (%@) is not a PNG file", aFileName);
+ return CGSizeZero;
+ }
+
+ // Calc Sizes. Isolate only four bytes of each size (width, height).
+ int width[4];
+ int height[4];
+ for (int d = 16; d < (16 + 4); d++) {
+ width[d-16] = buffer[d];
+ height[d-16] = buffer[d+4];
+ }
+
+ // Convert bytes to Long (Integer)
+ long resultWidth = (width[0] << (int)24) | (width[1] << (int)16) | (width[2] << (int)8) | width[3];
+ long resultHeight = (height[0] << (int)24) | (height[1] << (int)16) | (height[2] << (int)8) | height[3];
+
+ // Return Size.
+ return CGSizeMake(resultWidth,resultHeight);
+}
+
@end