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Code Issues Projects Releases Wiki Activity

'wheel' Event Support Fixes

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Whitespace, cancel handling
This commit is contained in:
Mark Salsbery 2013-10-23 13:55:52 -07:00
parent e76c9e65ab
commit 755c4752c0
2 changed files with 33 additions and 52 deletions
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63
src/mousetracker.js
View File

@ -440,9 +440,10 @@
/**
* Detect available mouse wheel event.
*/
$.MouseTracker.wheelEventName = (($.Browser.vendor == $.BROWSERS.IE && $.Browser.version > 8) || ("onwheel" in document.createElement("div"))) ? "wheel" : // Modern browsers support "wheel"
document.onmousewheel !== undefined ? "mousewheel" : // Webkit and IE support at least "mousewheel"
"DOMMouseScroll"; // Assume old Firefox
$.MouseTracker.wheelEventName = ( $.Browser.vendor == $.BROWSERS.IE && $.Browser.version > 8 ) ||
( 'onwheel' in document.createElement( 'div' ) ) ? 'wheel' : // Modern browsers support 'wheel'
document.onmousewheel !== undefined ? 'mousewheel' : // Webkit and IE support at least 'mousewheel'
'DOMMouseScroll'; // Assume old Firefox
/**
* Starts tracking mouse events on this element.
@ -1088,39 +1089,32 @@
* @private
* @inner
*/
function onMouseWheel( tracker, originalEvent ) {
function onMouseWheel( tracker, event ) {
// For legacy IE, access the global (window) event object
originalEvent = originalEvent || window.event;
event = event || window.event;
// Simulate a 'wheel' event
var event = {
target: originalEvent.target || originalEvent.srcElement,
var simulatedEvent = {
target: event.target || event.srcElement,
type: "wheel",
shiftKey: originalEvent.shiftKey || false,
clientX: originalEvent.clientX,
clientY: originalEvent.clientY,
pageX: originalEvent.pageX ? originalEvent.pageX : originalEvent.clientX,
pageY: originalEvent.pageY ? originalEvent.pageY : originalEvent.clientY,
deltaMode: originalEvent.type == "MozMousePixelScroll" ? 0 : 1, // 0=pixel, 1=line, 2=page
shiftKey: event.shiftKey || false,
clientX: event.clientX,
clientY: event.clientY,
pageX: event.pageX ? event.pageX : event.clientX,
pageY: event.pageY ? event.pageY : event.clientY,
deltaMode: event.type == "MozMousePixelScroll" ? 0 : 1, // 0=pixel, 1=line, 2=page
deltaX: 0,
deltaZ: 0,
preventDefault: function() {
if ( originalEvent.preventDefault ) {
originalEvent.preventDefault();
} else {
originalEvent.returnValue = false;
}
}
deltaZ: 0
};
// Calculate event.deltaY
// Calculate deltaY
if ( $.MouseTracker.wheelEventName == "mousewheel" ) {
event.deltaY = - 1 / $.DEFAULT_SETTINGS.pixelsPerWheelLine * originalEvent.wheelDelta;
simulatedEvent.deltaY = - 1 / $.DEFAULT_SETTINGS.pixelsPerWheelLine * event.wheelDelta;
} else {
event.deltaY = originalEvent.detail;
simulatedEvent.deltaY = event.detail;
}
handleWheelEvent( tracker, event, originalEvent, false );
handleWheelEvent( tracker, simulatedEvent, event, false );
}
@ -1157,7 +1151,7 @@
}
);
if ( propagate === false ) {
$.cancelEvent( event );
$.cancelEvent( originalEvent );
}
}
}
@ -1281,21 +1275,14 @@
target: event.target || event.srcElement,
type: "wheel",
shiftKey: event.shiftKey || false,
clientX: event.clientX,
clientY: event.clientY,
pageX: event.pageX ? event.pageX : event.clientX,
pageY: event.pageY ? event.pageY : event.clientY,
clientX: THIS[ tracker.hash ].pinchMidpoint.x,
clientY: THIS[ tracker.hash ].pinchMidpoint.y,
pageX: THIS[ tracker.hash ].pinchMidpoint.x,
pageY: THIS[ tracker.hash ].pinchMidpoint.y,
deltaMode: 1, // 0=pixel, 1=line, 2=page
deltaX: 0,
deltaY: ( THIS[ tracker.hash ].lastPinchDelta > pinchDelta ) ? 1 : -1,
deltaZ: 0,
preventDefault: function() {
if ( event.preventDefault ) {
event.preventDefault();
} else {
event.returnValue = false;
}
}
deltaZ: 0
};
handleWheelEvent( tracker, simulatedEvent, event, true );

6
src/openseadragon.js
View File

@ -390,15 +390,11 @@ window.OpenSeadragon = window.OpenSeadragon || function( options ){
* Detect event model and create appropriate _addEvent/_removeEvent methods
*/
if ( window.addEventListener ) {
//$._addEventListener = 'addEventListener';
//$._eventNamePrefix = '';
$._addEvent = function ( element, eventName, handler, useCapture ) {
element = $.getElement( element );
element.addEventListener( eventName, handler, useCapture );
};
} else if ( window.attachEvent ) {
//$._addEventListener = 'attachEvent';
//$._eventNamePrefix = 'on';
$._addEvent = function ( element, eventName, handler, useCapture ) {
element = $.getElement( element );
element.attachEvent( 'on' + eventName, handler );
@ -411,13 +407,11 @@ window.OpenSeadragon = window.OpenSeadragon || function( options ){
}
if ( window.removeEventListener ) {
//$._removeEventListener = 'removeEventListener';
$._removeEvent = function ( element, eventName, handler, useCapture ) {
element = $.getElement( element );
element.removeEventListener( eventName, handler, useCapture );
};
} else if ( window.detachEvent ) {
//$._removeEventListener = 'detachEvent';
$._removeEvent = function( element, eventName, handler, useCapture ) {
element = $.getElement( element );
element.detachEvent( 'on' + eventName, handler );