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Posted to dev@cordova.apache.org by "Shazron Abdullah (Commented) (JIRA)" <ji...@apache.org> on 2012/04/11 09:20:24 UTC
[jira] [Commented] (CB-183) ios camera targetWidth/Height don't
match the documentation
[ https://issues.apache.org/jira/browse/CB-183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13251385#comment-13251385 ]
Shazron Abdullah commented on CB-183:
-------------------------------------
see https://github.com/apache/incubator-cordova-ios/pull/12
> ios camera targetWidth/Height don't match the documentation
> -----------------------------------------------------------
>
> Key: CB-183
> URL: https://issues.apache.org/jira/browse/CB-183
> Project: Apache Callback
> Issue Type: Bug
> Components: iOS
> Affects Versions: 1.0.0
> Reporter: Durham
> Assignee: Shazron Abdullah
> Fix For: 1.7.0
>
>
> According to the [phonegap camera documentation|http://docs.phonegap.com/en/1.3.0/phonegap_camera_camera.md.html#cameraOptions] using targetWidth and targetHeight should maintain the aspect ratio of the original photo . The ios implementation does not do this. Instead it makes the shortest side match the desired target, and crops the rest.
> For example, if I take a 1920x1200 picture, and say targetWidth=1024 and targetHeight=1024, it results in a 1024x1024 square picture with the excess removed. On android it results in something like 1024x640, and nothing is cropped.
> I'm don't know objective-c, but I believe the fix is to use the following code inside Camera.m imageByScalingAndCroppingForSize. This is based off the android implementation.
> {code:title=Camera.m}
> ...
> if (CGSizeEqualToSize(imageSize, targetSize) == NO)
> {
> CGFloat newRatio = targetWidth / targetHeight;
> CGFloat origRatio = width / height;
> if (origRatio > newRatio)
> {
> targetHeight = (targetWidth * height) / width
> }
> else
> {
> targetWidth = (targetHeight * width) / height;
> }
> }
> CGSize finalSize = CGSizeMake(targetWidth, targetHeight);
> UIGraphicsBeginImageContext(finalSize);
> CGRect thumbnailRect = CGRectZero;
> thumbnailRect.size.width = targetWidth;
> thumbnailRect.size.height = targetHeight;
> [sourceImage drawInRect:thumbnailRect];
> ...
> {code}
> I'm currently seeing the problem in 1.0, but from looking at the code it still looks like a problem in 1.3.
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