mirror/openseadragon
1
0
Fork 0
mirror of https://github.com/openseadragon/openseadragon.git synced 2024-11-25 06:36:11 +03:00
Code Issues Projects Releases Wiki Activity

Pinch zoom fix

Browse Source 
The existing code failed on iPhone Safari iOS 6.x - event.detail was
always 0 causing only zoom out behavior.
This commit is contained in:
Mark Salsbery 2013-10-03 15:30:40 -07:00
parent 5ce3da2548
commit d55b2e7703
1 changed files with 8 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/mousetracker.js
View File

@ -1229,13 +1229,15 @@
if ( Math.abs( THIS[ tracker.hash ].lastPinchDelta - pinchDelta ) > 75 ) {
//$.console.debug( "pinch delta : " + pinchDelta + " | previous : " + THIS[ tracker.hash ].lastPinchDelta);
// Adjust the original event enough to simulate a mouse wheel scroll
event.shiftKey = event.shiftKey || false;
event.pageX = THIS[ tracker.hash ].pinchMidpoint.x;
event.pageY = THIS[ tracker.hash ].pinchMidpoint.y;
event.detail = ( THIS[ tracker.hash ].lastPinchDelta > pinchDelta ) ? 1 : -1;
// Simulate a mouse wheel scroll event
var simulatedEvent = {
shiftKey: event.shiftKey || false,
pageX: THIS[ tracker.hash ].pinchMidpoint.x,
pageY: THIS[ tracker.hash ].pinchMidpoint.y,
detail: ( THIS[ tracker.hash ].lastPinchDelta > pinchDelta ) ? 1 : -1
};
onMouseWheelSpin( tracker, event, true );
onMouseWheelSpin( tracker, simulatedEvent, true );
THIS[ tracker.hash ].lastPinchDelta = pinchDelta;
}