Created
October 11, 2010 22:47
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// Kosso imageAsCropped | |
// added to TiBlob.m | |
// requires 4 arguments : x, y, width, height | |
- (id)imageAsCropped:(id)args | |
{ | |
[self ensureImageLoaded]; | |
if (image!=nil) | |
{ | |
ENSURE_ARG_COUNT(args,4); | |
NSUInteger x = [TiUtils intValue:[args objectAtIndex:0]]; | |
NSUInteger y = [TiUtils intValue:[args objectAtIndex:1]]; | |
NSUInteger width = [TiUtils intValue:[args objectAtIndex:2]]; | |
NSUInteger height = [TiUtils intValue:[args objectAtIndex:3]]; | |
return [[[TiBlob alloc] initWithImage:[UIImageResize croppedImage:CGRectMake(x, y, width, height) | |
image:image]] | |
autorelease]; | |
} | |
return nil; | |
} | |
// end Kosso imageAsCropped |
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// Kosso screenshot | |
// replacement of takeScreenshot method in MediaModule.m | |
// | |
-(void)takeScreenshot:(id)arg | |
{ | |
ENSURE_UI_THREAD(takeScreenshot,arg); | |
ENSURE_SINGLE_ARG(arg,KrollCallback); | |
// Create a graphics context with the target size | |
// On iOS 4 and later, use UIGraphicsBeginImageContextWithOptions to take the scale into consideration | |
// On iOS prior to 4, fall back to use UIGraphicsBeginImageContext | |
float systemVersion = [[[UIDevice currentDevice] systemVersion] floatValue]; | |
CGSize imageSize = [[UIScreen mainScreen] bounds].size; | |
// this wasn't working properly in different iOS versions so just check for >= 4.0 | |
//if (NULL != UIGraphicsBeginImageContextWithOptions ) | |
if (systemVersion >= 4.0f) | |
UIGraphicsBeginImageContextWithOptions(imageSize, NO, 0); | |
else | |
UIGraphicsBeginImageContext(imageSize); | |
CGContextRef context = UIGraphicsGetCurrentContext(); | |
// Iterate over every window from back to front | |
for (UIWindow *window in [[UIApplication sharedApplication] windows]) | |
{ | |
if (![window respondsToSelector:@selector(screen)] || [window screen] == [UIScreen mainScreen]) | |
{ | |
// -renderInContext: renders in the coordinate space of the layer, | |
// so we must first apply the layer's geometry to the graphics context | |
CGContextSaveGState(context); | |
// Center the context around the window's anchor point | |
CGContextTranslateCTM(context, [window center].x, [window center].y); | |
// Apply the window's transform about the anchor point | |
CGContextConcatCTM(context, [window transform]); | |
// Offset by the portion of the bounds left of and above the anchor point | |
CGContextTranslateCTM(context, | |
-[window bounds].size.width * [[window layer] anchorPoint].x, | |
-[window bounds].size.height * [[window layer] anchorPoint].y); | |
// Render the layer hierarchy to the current context | |
[[window layer] renderInContext:context]; | |
// Restore the context | |
CGContextRestoreGState(context); | |
} | |
} | |
// Retrieve the screenshot image | |
UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); | |
UIGraphicsEndImageContext(); | |
TiBlob *blob = [[[TiBlob alloc] initWithImage:image] autorelease]; | |
NSDictionary *event = [NSDictionary dictionaryWithObject:blob forKey:@"media"]; | |
[self _fireEventToListener:@"screenshot" withObject:event listener:arg thisObject:nil]; | |
} | |
// end Kosso screenshot |
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Hi kosso, when using your module (or the most recent included in the SDK API) cropping big portrait images I get the result rotated 90 degrees to the left. I've been struggling to find a solution for that but I had not success so far, do you have any idea why this is happening?