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added iOS quick zoom gesture

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This commit is contained in:
Justin R. Miller
2014-02-07 21:18:16 -05:00
parent 7f30ca8763
commit 150d3ffdbe
1 changed files with 31 additions and 0 deletions
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31
ios/MBXViewController.mm
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@@ -24,6 +24,7 @@ NSString *const MBXNeedsRenderNotification = @"MBXNeedsRenderNotification";
@property (nonatomic) CGPoint center;
@property (nonatomic) CGFloat scale;
@property (nonatomic) CGFloat angle;
@property (nonatomic) CGFloat quickZoomStart;
@property (nonatomic) BOOL debug;
@end
@@ -112,6 +113,14 @@ class MBXMapView
threeFingerLongPress.numberOfTouchesRequired = 3;
[self.view addGestureRecognizer:threeFingerLongPress];
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)
{
UILongPressGestureRecognizer *quickZoom = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleQuickZoomGesture:)];
quickZoom.numberOfTapsRequired = 1;
quickZoom.minimumPressDuration = 0.25;
[self.view addGestureRecognizer:quickZoom];
}
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(startRender) name:MBXNeedsRenderNotification object:nil];
displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(render:)];
@@ -300,6 +309,28 @@ class MBXMapView
[self startRender];
}
- (void)handleQuickZoomGesture:(UILongPressGestureRecognizer *)quickZoom
{
mapView->map.cancelAnimations();
if (quickZoom.state == UIGestureRecognizerStateBegan)
{
self.scale = mapView->map.getScale();
self.quickZoomStart = [quickZoom locationInView:quickZoom.view].y;
}
else if (quickZoom.state == UIGestureRecognizerStateChanged)
{
CGFloat distance = self.quickZoomStart - [quickZoom locationInView:quickZoom.view].y;
CGFloat newZoom = log2f(self.scale) + (distance / 100);
mapView->map.scaleBy(powf(2, newZoom) / mapView->map.getScale(), self.view.bounds.size.width / 2, self.view.bounds.size.height / 2);
}
[self startRender];
}
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
NSArray *validSimultaneousGestures = @[ [UIPanGestureRecognizer class], [UIPinchGestureRecognizer class], [UIRotationGestureRecognizer class] ];