Rectangle mode avoidEmptySpaceAroundImage not working

[dyadenkor]

Hi gents, I've tried rectangle mode (for quick testing I've used square mode, but change this in source code CGSize maskSize = CGSizeMake(length, length * 0.75));

And here the result https://www.dropbox.com/s/lp2yuhx0lnzoubu/Screenshot%202015-03-13%2018.05.19.png?dl=0

avoidEmptySpaceAroundImage not working with rectangle mode for me, but perfect with square.

Or how should I create rectangle mode then? Thanks.

[ruslanskorb]

Hi @dyadenkor,

Rectangle mode is the custom mode.
You need to set cropMode to RSKImageCropModeCustom and implement data source methods.

To support the rotation when cropMode is RSKImageCropModeCustom you must implement the data source method imageCropViewControllerCustomMovementRect:.

Then avoidEmptySpaceAroundImage will work properly.

[dyadenkor]

Thanks, will try and will tell you the result. Thanks!

[dyadenkor]

I'he tried. https://www.dropbox.com/s/laralbs0d0fewjm/Screenshot%202015-03-13%2021.33.15.png?dl=0

What I am doing wrong?

#pragma mark - Action handling

• (void)onAddPhotoButtonTouch:(UIButton *)sender
  {
  UIImage *photo = [UIImage imageNamed:@"photo"];
  RSKImageCropViewController *imageCropVC = [[RSKImageCropViewController alloc] initWithImage:photo cropMode:RSKImageCropModeCustom];
  imageCropVC.avoidEmptySpaceAroundImage = YES;
  imageCropVC.rotationEnabled = YES;
  imageCropVC.dataSource = self;
  imageCropVC.delegate = self;
  [self.navigationController pushViewController:imageCropVC animated:YES];
  }

#pragma mark - RSKImageCropViewControllerDataSource

// Returns a custom rect for the mask.

• (CGRect)imageCropViewControllerCustomMaskRect:(RSKImageCropViewController *)controller
  {
  CGFloat viewWidth = CGRectGetWidth(self.view.frame);
  CGFloat viewHeight = CGRectGetHeight(self.view.frame);

  CGRect maskRect = CGRectMake(0,
  (viewHeight - viewWidth) * 0.25f,
  viewWidth,
  viewWidth * 0.75f);

  return maskRect;
  }

// Returns a custom path for the mask.

• (UIBezierPath *)imageCropViewControllerCustomMaskPath:(RSKImageCropViewController *)controller
  {
  CGRect rect = controller.maskRect;
  UIBezierPath *maskPath = [UIBezierPath bezierPathWithRect:rect];
  return maskPath;
  }

// Returns a custom rect in which the image can be moved.

• (CGRect)imageCropViewControllerCustomMovementRect:(RSKImageCropViewController *)controller
  {
  return [self imageCropViewControllerCustomMaskRect:controller];
  }

[ruslanskorb]

You should calculate and return the correct movement rect according to the current values of the parameters, such as the angle of rotation.
It's a usage question. You can ask about it on stack overflow.

[pronebird]

We should include rotation in sample app, I think not many understand what movement rect is.

[dyadenkor]

I understand what is this, but I can't understand how could I calculate it. I saw many calculations in sources, could you explain, please in words these processes. Thanks :)

[ruslanskorb]

@dyadenkor, you can read about these processes here

@pronebird, what kind of example would you add?