Online Timesheet Software – TiMeister – Weblog

    #import Foundation/Foundation.h
 
    @interface Utilities : NSObject {
 
    }
 
    // Methods
    - (void) cacheImage: (NSString *) ImageURLString;
    - (UIImage *) getCachedImage: (NSString *) ImageURLString;
    - (UIImage *) roundCorners: (UIImage*) img;
 
    @end

    #import "Utilities.h"
    #define TMP NSTemporaryDirectory()
 
    @implementation Utilities

    - (void) cacheImage: (NSString *) ImageURLString
    {
    NSURL *ImageURL = [NSURL URLWithString: ImageURLString];
 
    // Generate a unique path to a resource representing the image you want
    NSString *filename = [[something unique, perhaps the image name]];
    NSString *uniquePath = [TMP stringByAppendingPathComponent: filename];
 
    // Check for file existence
    if(![[NSFileManager defaultManager] fileExistsAtPath: uniquePath])
    {
    // The file doesn't exist, we should get a copy of it
 
    // Fetch image
    NSData *data = [[NSData alloc] initWithContentsOfURL: ImageURL];
    UIImage *image = [[UIImage alloc] initWithData: data];
 
    // Do we want to round the corners?
    image = [self roundCorners: image];
 
    // Is it PNG or JPG/JPEG?
    // Running the image representation function writes the data from the image to a file
    if([ImageURLString rangeOfString: @".png" options: NSCaseInsensitiveSearch].location != NSNotFound)
    {
    [UIImagePNGRepresentation(image) writeToFile: uniquePath atomically: YES];
    }
    else if(
    [ImageURLString rangeOfString: @".jpg" options: NSCaseInsensitiveSearch].location != NSNotFound ||
    [ImageURLString rangeOfString: @".jpeg" options: NSCaseInsensitiveSearch].location != NSNotFound
    )
    {
    [UIImageJPEGRepresentation(image, 100) writeToFile: uniquePath atomically: YES];
    }
    }
    }

  - (UIImage *) getCachedImage: (NSString *) ImageURLString
    {
    NSString *filename = [[something unique, perhaps the image name]];
    NSString *uniquePath = [TMP stringByAppendingPathComponent: filename];
 
    UIImage *image;
 
    // Check for a cached version
    if([[NSFileManager defaultManager] fileExistsAtPath: uniquePath])
    {
    image = [UIImage imageWithContentsOfFile: uniquePath]; // this is the cached image
    }
    else
    {
    // get a new one
    [self cacheImage: ImageURLString];
    image = [UIImage imageWithContentsOfFile: uniquePath];
    }
 
    return image;
    }

 static void addRoundedRectToPath(CGContextRef context, CGRect rect, float ovalWidth, float ovalHeight)
    {
    float fw, fh;
    if (ovalWidth == 0 || ovalHeight == 0)
    {
    CGContextAddRect(context, rect);
    return;
    }
    CGContextSaveGState(context);
    CGContextTranslateCTM (context, CGRectGetMinX(rect), CGRectGetMinY(rect));
    CGContextScaleCTM (context, ovalWidth, ovalHeight);
    fw = CGRectGetWidth (rect) / ovalWidth;
    fh = CGRectGetHeight (rect) / ovalHeight;
    CGContextMoveToPoint(context, fw, fh/2);
    CGContextAddArcToPoint(context, fw, fh, fw/2, fh, 1);
    CGContextAddArcToPoint(context, 0, fh, 0, fh/2, 1);
    CGContextAddArcToPoint(context, 0, 0, fw/2, 0, 1);
    CGContextAddArcToPoint(context, fw, 0, fw, fh/2, 1);
    CGContextClosePath(context);
    CGContextRestoreGState(context);
    }
 
    - (UIImage *) roundCorners: (UIImage*) img
    {
    int w = img.size.width;
    int h = img.size.height;
 
    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
    CGContextRef context = CGBitmapContextCreate(NULL, w, h, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst);
 
    CGContextBeginPath(context);
    CGRect rect = CGRectMake(0, 0, img.size.width, img.size.height);
    addRoundedRectToPath(context, rect, 5, 5);
    CGContextClosePath(context);
    CGContextClip(context);
 
    CGContextDrawImage(context, CGRectMake(0, 0, w, h), img.CGImage);
 
    CGImageRef imageMasked = CGBitmapContextCreateImage(context);
    CGContextRelease(context);
    CGColorSpaceRelease(colorSpace);
    [img release];
 
    return [UIImage imageWithCGImage:imageMasked];
    }
 
    @end

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
delayBeforeDialing = [userDefaults floatForKey:@"delayBeforeDialing"];

- (void)loadImage:(NSString*)url frame:(CGRect)frame {
NSString* textHTML = @"
<!--
body {
background-color: transparent;
color: white;
}
-->
<img src="\" alt="" width="%0.0f" height="%0.0f" />
";
 
NSString* html = [NSString stringWithFormat:textHTML, url, frame.size.width, frame.size.height];
 
if(webView == nil) {
webView = [[UIWebView alloc] initWithFrame:frame];
[self.view addSubview:webView];
}
 
[webView loadHTMLString:html baseURL:nil];
}