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https://issues.apache.org/jira/browse/CB-54?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13158869#comment-13158869
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Shazron Abdullah commented on CB-54:
------------------------------------
by: https://github.com/patdenice
I finally wrote a phonegap plugin to extend camera API:
In my app, I call camera.getResizedPicture method instead of camera.getPicture
with same parameters. With targetWidth and targetHeight parameters, my image is
just resized and not cropped.
cameraExtended.js
Camera.prototype.getResizedPicture = function(successCallback,
errorCallback, options) {
// successCallback required
if (typeof successCallback != "function") {
console.log("Camera Error: successCallback is not a function");
return;
}
// errorCallback optional
if (errorCallback && (typeof errorCallback != "function")) {
console.log("Camera Error: errorCallback is not a function");
return;
}
PhoneGap.exec(successCallback, errorCallback,
"com.phonegap.cameraExtended","getPicture",[options]);
};
cameraExtended.h
#import "PhoneGap/Camera.h"
@interface PGCameraExtended : PGCamera<UIImagePickerControllerDelegate,
UINavigationControllerDelegate,
UIPopoverControllerDelegate>
{
}
- (UIImage*)imageByScalingAndCroppingForSize:(UIImage*)anImage
toSize:(CGSize)targetSize;
@end
cameraExtended.m
#import "cameraExtended.h"
@implementation PGCameraExtended
- (UIImage*)imageByScalingAndCroppingForSize:(UIImage*)anImage
toSize:(CGSize)targetSize
{
UIImage *sourceImage = anImage;
UIImage *newImage = nil;
CGSize imageSize = sourceImage.size;
CGFloat width = imageSize.width;
CGFloat height = imageSize.height;
CGFloat targetWidth = targetSize.width;
CGFloat targetHeight = targetSize.height;
CGFloat scaledWidth = targetWidth;
CGFloat scaledHeight = targetHeight;
CGFloat ratio_width = width / targetWidth;
CGFloat ratio_height = height / targetHeight;
// maximal size exceeded ?
if (ratio_width > 1 || ratio_height > 1)
{
if (ratio_width < ratio_height)
{
scaledWidth = ceil(width / ratio_height);
}
else
{
scaledHeight = ceil(height / ratio_width);
}
targetSize = CGSizeMake(scaledWidth, scaledHeight);
self.pickerController.targetSize = targetSize;
}
else
{
return sourceImage;
}
UIGraphicsBeginImageContext(targetSize);
CGRect thumbnailRect = CGRectZero;
thumbnailRect.size.width = scaledWidth;
thumbnailRect.size.height = scaledHeight;
[sourceImage drawInRect:thumbnailRect];
newImage = UIGraphicsGetImageFromCurrentImageContext();
if(newImage == nil)
NSLog(@"could not scale image");
//pop the context to get back to the default
UIGraphicsEndImageContext();
return newImage;
}
@end
> Feature request: ability to downsize pictures with camera.getPicture (no crop)
> ------------------------------------------------------------------------------
>
> Key: CB-54
> URL: https://issues.apache.org/jira/browse/CB-54
> Project: Apache Callback
> Issue Type: New Feature
> Components: iOS
> Reporter: Shazron Abdullah
>
> reported at: https://github.com/phonegap/phonegap-iphone/issues/287
> by: https://github.com/patdenice
> Hi,
> We're working on a mobile application using phonegap. The application is
> designed to upload photos from the smartphone/tablet to a Piwigo gallery.
> Piwigo is a popular open source web application to create photo galleries.
> The application "Piwigo for iOS/Android" is nearly complete, we just need the
> ability to downsize photos before upload. Unfortunately, targetWidth and
> targetHeight parameters on camera.getPicture method are designed to crop the
> photo, which is what we're seeking. Would it be possible to add
> maxWidth/maxHeight parameters and resize algorithm ?
> Thanks.
> P@t
> Piwigo Team.
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