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+ Added #63 (Moving drawn elements.)

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Moritz Haarmann 2014-03-18 23:46:49 +01:00
parent 474026f04e
commit b33ee9a61f
1 changed files with 34 additions and 0 deletions
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34
Classes/BITImageAnnotationViewController.m
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@ -19,11 +19,15 @@
@property (nonatomic, strong) NSMutableArray *objects;
@property (nonatomic, strong) UIPanGestureRecognizer *panRecognizer;
@property (nonatomic, strong) UITapGestureRecognizer *tapRecognizer;
@property (nonatomic, strong) UIPinchGestureRecognizer *pinchRecognizer;
@property (nonatomic) CGFloat scaleFactor;
@property (nonatomic) CGPoint panStart;
@property (nonatomic,strong) BITImageAnnotation *currentAnnotation;
@property (nonatomic) BOOL isDrawing;
@end
@implementation BITImageAnnotationViewController
@ -138,17 +142,47 @@
#pragma mark - Gesture Handling
- (void)panned:(UIPanGestureRecognizer *)gestureRecognizer {
if ([self.editingControls selectedSegmentIndex] != UISegmentedControlNoSegment || self.isDrawing ){
if (gestureRecognizer.state == UIGestureRecognizerStateBegan){
self.currentAnnotation = [self annotationForCurrentMode];
[self.objects addObject:self.currentAnnotation];
self.currentAnnotation.sourceImage = self.image;
[self.imageView insertSubview:self.currentAnnotation aboveSubview:self.imageView];
self.panStart = [gestureRecognizer locationInView:self.imageView];
[self.editingControls setSelectedSegmentIndex:UISegmentedControlNoSegment];
self.isDrawing = YES;
} else if (gestureRecognizer.state == UIGestureRecognizerStateChanged){
CGPoint bla = [gestureRecognizer locationInView:self.imageView];
self.currentAnnotation.frame = CGRectMake(self.panStart.x, self.panStart.y, bla.x - self.panStart.x, bla.y - self.panStart.y);
self.currentAnnotation.movedDelta = CGSizeMake(bla.x - self.panStart.x, bla.y - self.panStart.y);
self.currentAnnotation.imageFrame = [self.view convertRect:self.imageView.frame toView:self.currentAnnotation];
} else {
self.currentAnnotation = nil;
self.isDrawing = NO;
}
} else {
if (gestureRecognizer.state == UIGestureRecognizerStateBegan){
// find and possibly move an existing annotation.
BITImageAnnotation *selectedAnnotation = (BITImageAnnotation *)[self.view hitTest:[gestureRecognizer locationInView:self.view] withEvent:nil];
if ([self.objects indexOfObject:selectedAnnotation] != NSNotFound){
self.currentAnnotation = selectedAnnotation;
}
} else if (gestureRecognizer.state == UIGestureRecognizerStateChanged && self.currentAnnotation){
CGPoint delta = [gestureRecognizer translationInView:self.view];
CGRect annotationFrame = self.currentAnnotation.frame;
annotationFrame.origin.x += delta.x;
annotationFrame.origin.y += delta.y;
self.currentAnnotation.frame = annotationFrame;
[gestureRecognizer setTranslation:CGPointZero inView:self.view];
} else {
self.currentAnnotation = nil;
}
}
}