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issue:

Browse Source 
canvas pans when tap on touch screen

reason:
    onTouchStart calls onMouseDown which registers 'mousemove' event handler.
    when I tap on touch screen, even though browser did not dispatch 'touchmove' event, it dispatched 'mousemove' event.
    therefore, the 'mousemove' handler pans canvas.

fix:
    stop onTouchStart handler registering 'mousemove' handler as onMouseMove will be properly triggered by onTouchMove
This commit is contained in:
ethan.li 2013-07-23 16:40:04 +10:00
parent 0ef98be0b7
commit 0bb9c5be97
1 changed files with 17 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
src/mousetracker.js
View File

@ -663,7 +663,7 @@
* @private
* @inner
*/
function onMouseDown( tracker, event ) {
function onMouseDown( tracker, event, noCapture ) {
var delegate = THIS[ tracker.hash ],
propagate;
@ -693,6 +693,10 @@
$.cancelEvent( event );
}
if ( noCapture ) {
return;
}
if ( !( $.Browser.vendor == $.BROWSERS.IE && $.Browser.version < 9 ) ||
!IS_CAPTURING ) {
captureMouse( tracker );
@ -719,7 +723,9 @@
THIS[ tracker.hash ].lastTouch = event.touches[ 0 ];
onMouseOver( tracker, event.changedTouches[ 0 ] );
onMouseDown( tracker, event.touches[ 0 ] );
// call with no capture as the onMouseMove will
// be triggered by onTouchMove
onMouseDown( tracker, event.touches[ 0 ], true );
}
if( event.touches.length == 2 ){
@ -790,7 +796,9 @@
THIS[ tracker.hash ].lastTouch = null;
onMouseUpWindow( tracker, event.changedTouches[ 0 ] );
// call with no release, as the mouse events are
// not registered in onTouchStart
onMouseUpWindow( tracker, event.changedTouches[ 0 ], true );
onMouseOut( tracker, event.changedTouches[ 0 ] );
}
if( event.touches.length + event.changedTouches.length == 2 ){
@ -849,10 +857,15 @@
* @private
* @inner
*/
function onMouseUpWindow( tracker, event ) {
function onMouseUpWindow( tracker, event, noRelease ) {
if ( ! THIS[ tracker.hash ].insideElement ) {
onMouseUp( tracker, event );
}
if (noRelease) {
return;
}
releaseMouse( tracker );
}