--- a/project_files/HedgewarsMobile/Classes/UIImageExtra.m Sat Jul 31 10:52:43 2010 +0200
+++ b/project_files/HedgewarsMobile/Classes/UIImageExtra.m Sat Jul 31 11:24:53 2010 +0200
@@ -10,22 +10,22 @@
@implementation UIImage (extra)
-
+
-(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
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;
}
@@ -38,19 +38,19 @@
-(UIImage *)mergeWith:(UIImage *)secondImage atPoint:(CGPoint) secondImagePoint atSize:(CGSize) resultingSize {
// Create a bitmap graphics context; this will also set it as the current context
UIGraphicsBeginImageContext(resultingSize);
-
+
// draw the background image in the current context
[self drawAtPoint:CGPointMake(0,0)];
-
+
// draw the image on top of the first image (because the context is the same)
[secondImage drawAtPoint:secondImagePoint];
-
+
// create an image from the current contex (not thread safe)
UIImage *resultImage = UIGraphicsGetImageFromCurrentImageContext();
-
+
// free drawing contex
UIGraphicsEndImageContext();
-
+
// return the resulting autoreleased image
return resultImage;
}
@@ -58,17 +58,17 @@
-(id) initWithContentsOfFile:(NSString *)path andCutAt:(CGRect) rect {
// load image from path
UIImage *image = [[UIImage alloc] initWithContentsOfFile: path];
-
+
if (nil != image) {
// get its CGImage representation with a give size
CGImageRef cgImage = CGImageCreateWithImageInRect([image CGImage], rect);
-
+
// clean memory
[image release];
-
+
// create a UIImage from the CGImage (memory must be allocated already)
UIImage *sprite = [self initWithCGImage:cgImage];
-
+
// clean memory
CGImageRelease(cgImage);
@@ -82,38 +82,38 @@
-(UIImage *)cutAt:(CGRect) rect {
CGImageRef cgImage = CGImageCreateWithImageInRect([self CGImage], rect);
-
+
UIImage *res = [UIImage imageWithCGImage:cgImage];
CGImageRelease(cgImage);
-
+
return res;
}
-(UIImage *)convertToGrayScale {
// Create image rectangle with current image width/height
CGRect imageRect = CGRectMake(0, 0, self.size.width, self.size.height);
-
+
// Grayscale color space
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceGray();
-
+
// Create bitmap content with current image size and grayscale colorspace
CGContextRef context = CGBitmapContextCreate(nil, self.size.width, self.size.height, 8, 0, colorSpace, kCGImageAlphaNone);
-
+
// Draw image into current context, with specified rectangle
// using previously defined context (with grayscale colorspace)
CGContextDrawImage(context, imageRect, [self CGImage]);
-
+
// Create bitmap image info from pixel data in current context
CGImageRef imageRef = CGBitmapContextCreateImage(context);
-
- // Create a new UIImage object
+
+ // Create a new UIImage object
UIImage *newImage = [UIImage imageWithCGImage:imageRef];
-
+
// Release colorspace, context and bitmap information
CGColorSpaceRelease(colorSpace);
CGContextRelease(context);
CFRelease(imageRef);
-
+
// Return the new grayscale image
return newImage;
}
@@ -122,7 +122,7 @@
-(UIImage*) maskImageWith:(UIImage *)maskImage {
// prepare the reference image
CGImageRef maskRef = [maskImage CGImage];
-
+
// create the mask using parameters of the mask reference
CGImageRef mask = CGImageMaskCreate(CGImageGetWidth(maskRef),
CGImageGetHeight(maskRef),
@@ -130,14 +130,14 @@
CGImageGetBitsPerPixel(maskRef),
CGImageGetBytesPerRow(maskRef),
CGImageGetDataProvider(maskRef), NULL, false);
-
+
// create an image in the current context
CGImageRef masked = CGImageCreateWithMask([self CGImage], mask);
CGImageRelease(mask);
-
+
UIImage* retImage = [UIImage imageWithCGImage:masked];
CGImageRelease(masked);
-
+
return retImage;
}
@@ -162,30 +162,30 @@
CGContextRestoreGState(context);
}
--(UIImage *)makeRoundCornersOfSize:(CGSize) sizewh {
+-(UIImage *)makeRoundCornersOfSize:(CGSize) sizewh {
CGFloat cornerWidth = sizewh.width;
CGFloat cornerHeight = sizewh.height;
CGFloat w = self.size.width;
CGFloat h = self.size.height;
-
+
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGContextRef context = CGBitmapContextCreate(NULL, w, h, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst);
-
+
CGContextBeginPath(context);
CGRect rect = CGRectMake(0, 0, w, h);
addRoundedRectToPath(context, rect, cornerWidth, cornerHeight);
CGContextClosePath(context);
CGContextClip(context);
-
+
CGContextDrawImage(context, CGRectMake(0, 0, w, h), [self CGImage]);
-
+
CGImageRef imageMasked = CGBitmapContextCreateImage(context);
CGContextRelease(context);
CGColorSpaceRelease(colorSpace);
-
+
UIImage *newImage = [UIImage imageWithCGImage:imageMasked];
CGImageRelease(imageMasked);
-
+
return newImage;
}