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Code Issues Projects Releases Wiki Activity

Enhanced pointer capture implementation, IE bug workarounds

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This commit is contained in:
Mark Salsbery 2020-07-30 21:08:02 -07:00
parent e47f629a9e
commit e7a62c2717
3 changed files with 390 additions and 179 deletions
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2
changelog.txt
View File

@ -20,6 +20,8 @@ OPENSEADRAGON CHANGELOG
* MouseTracker: IE 10 - MSPointerEnter/MSPointerLeave didn't exist then, simulated with MSPointerOver/MSPointerOut * MouseTracker: IE 10 - MSPointerEnter/MSPointerLeave didn't exist then, simulated with MSPointerOver/MSPointerOut
* MouseTracker: Simulate mouseover/mouseout on IE < 9 * MouseTracker: Simulate mouseover/mouseout on IE < 9
* Added pointerType property to Viewer container-enter, container-exit, canvas-drag, canvas-drag-end, canvas-pinch events * Added pointerType property to Viewer container-enter, container-exit, canvas-drag, canvas-drag-end, canvas-pinch events
* MouseTracker: Fire dragEndHandler event even if release point same as initial contact point (#1459)
* MouseTracker: Pointer capture implemented with capture APIs where available. Only fallback to emulated capture on extremely old browsers
2.4.2: 2.4.2:

559
src/mousetracker.js
View File

@ -216,6 +216,7 @@
DOMMouseScroll: function ( event ) { onMouseWheel( _this, event ); }, DOMMouseScroll: function ( event ) { onMouseWheel( _this, event ); },
MozMousePixelScroll: function ( event ) { onMouseWheel( _this, event ); }, MozMousePixelScroll: function ( event ) { onMouseWheel( _this, event ); },
losecapture: function ( event ) { onLoseCapture( _this, event ); },
mouseenter: function ( event ) { onMouseEnter( _this, event ); }, mouseenter: function ( event ) { onMouseEnter( _this, event ); },
mouseleave: function ( event ) { onMouseLeave( _this, event ); }, mouseleave: function ( event ) { onMouseLeave( _this, event ); },
mouseover: function ( event ) { onMouseOver( _this, event ); }, // IE9+ only mouseover: function ( event ) { onMouseOver( _this, event ); }, // IE9+ only
@ -236,6 +237,10 @@
gesturestart: function ( event ) { onGestureStart( _this, event ); }, gesturestart: function ( event ) { onGestureStart( _this, event ); },
gesturechange: function ( event ) { onGestureChange( _this, event ); }, gesturechange: function ( event ) { onGestureChange( _this, event ); },
gotpointercapture: function ( event ) { onGotPointerCapture( _this, event ); },
MSGotPointerCapture: function ( event ) { onGotPointerCapture( _this, event ); },
lostpointercapture: function ( event ) { onLostPointerCapture( _this, event ); },
MSLostPointerCapture: function ( event ) { onLostPointerCapture( _this, event ); },
pointerenter: function ( event ) { onPointerEnter( _this, event ); }, pointerenter: function ( event ) { onPointerEnter( _this, event ); },
pointerleave: function ( event ) { onPointerLeave( _this, event ); }, pointerleave: function ( event ) { onPointerLeave( _this, event ); },
pointerover: function ( event ) { onPointerOver( _this, event ); }, pointerover: function ( event ) { onPointerOver( _this, event ); },
@ -989,20 +994,50 @@
}; };
/** /**
* Resets all active mousetrakers. (Added to patch issue #697 "Mouse up outside map will cause "canvas-drag" event to stick") * True if inside an iframe, otherwise false.
* * @member {Boolean} isInIframe
* @private * @private
* @member resetAllMouseTrackers * @inner
* @memberof OpenSeadragon.MouseTracker
*/ */
$.MouseTracker.resetAllMouseTrackers = function(){ var isInIframe = (function() {
for(var i = 0; i < MOUSETRACKERS.length; i++){ try {
if (MOUSETRACKERS[i].isTracking()){ return window.self !== window.top;
MOUSETRACKERS[i].setTracking(false); } catch (e) {
MOUSETRACKERS[i].setTracking(true); return true;
}
} }
}; })();
/**
* @function
* @private
* @inner
* @returns {Boolean} True if the target supports DOM Level 2 event subscription methods, otherwise false.
*/
function canAccessEvents (target) {
try {
return target.addEventListener && target.removeEventListener;
} catch (e) {
return false;
}
}
//TODO Revisit this if there's still an issue. The PointerEvent model should have no problems
// like the issue this code attempts to fix.
// /**
// * Resets all active mousetrakers. (Added to patch issue #697 "Mouse up outside map will cause "canvas-drag" event to stick")
// *
// * @private
// * @member resetAllMouseTrackers
// * @memberof OpenSeadragon.MouseTracker
// */
// $.MouseTracker.resetAllMouseTrackers = function(){
// for(var i = 0; i < MOUSETRACKERS.length; i++){
// if (MOUSETRACKERS[i].isTracking()){
// MOUSETRACKERS[i].setTracking(false);
// MOUSETRACKERS[i].setTracking(true);
// }
// }
// };
/** /**
* Provides continuous computation of velocity (speed and direction) of active pointers. * Provides continuous computation of velocity (speed and direction) of active pointers.
@ -1130,6 +1165,9 @@
var divElement = document.createElement( 'div' ); var divElement = document.createElement( 'div' );
return $.isFunction( divElement.setPointerCapture ) && $.isFunction( divElement.releasePointerCapture ); return $.isFunction( divElement.setPointerCapture ) && $.isFunction( divElement.releasePointerCapture );
}()); }());
if ( $.MouseTracker.havePointerCapture ) {
$.MouseTracker.subscribeEvents.push( "gotpointercapture", "lostpointercapture" );
}
} else if ( window.MSPointerEvent && window.navigator.msPointerEnabled ) { } else if ( window.MSPointerEvent && window.navigator.msPointerEnabled ) {
// IE10 (MSPointerEnter/MSPointerLeave simulated with MSPointerOver/MSPointerOut) // IE10 (MSPointerEnter/MSPointerLeave simulated with MSPointerOver/MSPointerOut)
$.MouseTracker.havePointerEvents = true; $.MouseTracker.havePointerEvents = true;
@ -1141,9 +1179,13 @@
var divElement = document.createElement( 'div' ); var divElement = document.createElement( 'div' );
return $.isFunction( divElement.msSetPointerCapture ) && $.isFunction( divElement.msReleasePointerCapture ); return $.isFunction( divElement.msSetPointerCapture ) && $.isFunction( divElement.msReleasePointerCapture );
}()); }());
if ( $.MouseTracker.havePointerCapture ) {
$.MouseTracker.subscribeEvents.push( "MSGotPointerCapture", "MSLostPointerCapture" );
}
} else { } else {
// Legacy W3C mouse events // Legacy W3C mouse events
$.MouseTracker.havePointerEvents = false; $.MouseTracker.havePointerEvents = false;
$.MouseTracker.unprefixedPointerEvents = true;
$.MouseTracker.subscribeEvents.push( "mouseenter", "mouseleave" ); $.MouseTracker.subscribeEvents.push( "mouseenter", "mouseleave" );
if ( $.Browser.vendor !== $.BROWSERS.IE || $.Browser.version > 8 ) { if ( $.Browser.vendor !== $.BROWSERS.IE || $.Browser.version > 8 ) {
$.MouseTracker.subscribeEvents.push( "mouseover", "mouseout" ); $.MouseTracker.subscribeEvents.push( "mouseover", "mouseout" );
@ -1153,11 +1195,14 @@
} }
$.MouseTracker.subscribeEvents.push( "mousedown", "mouseup", "mousemove" ); $.MouseTracker.subscribeEvents.push( "mousedown", "mouseup", "mousemove" );
$.MouseTracker.mousePointerId = "legacy-mouse"; $.MouseTracker.mousePointerId = "legacy-mouse";
// Legacy mouse events capture support // Legacy mouse events capture support (IE/Firefox only?)
$.MouseTracker.havePointerCapture = (function () { $.MouseTracker.havePointerCapture = (function () {
var divElement = document.createElement( 'div' ); var divElement = document.createElement( 'div' );
return $.isFunction( divElement.setCapture ) && $.isFunction( divElement.releaseCapture ); return $.isFunction( divElement.setCapture ) && $.isFunction( divElement.releaseCapture );
}()); }());
if ( $.MouseTracker.havePointerCapture ) {
$.MouseTracker.subscribeEvents.push( "losecapture" );
}
// Legacy touch events // Legacy touch events
if ( 'ontouchstart' in window ) { if ( 'ontouchstart' in window ) {
// iOS, Android, and other W3c Touch Event implementations // iOS, Android, and other W3c Touch Event implementations
@ -1522,42 +1567,51 @@
* @private * @private
* @inner * @inner
*/ */
function capturePointer( tracker, pointerType, pointerCount ) { function capturePointer( tracker, gPoint ) {
var pointsList = tracker.getActivePointersListByType( pointerType ), var eventParams;
eventParams;
pointsList.captureCount += (pointerCount || 1); if ( $.MouseTracker.havePointerCapture ) {
if ( $.MouseTracker.havePointerEvents ) {
if ( pointsList.captureCount === 1 ) { if ( $.MouseTracker.unprefixedPointerEvents ) {
if ( $.Browser.vendor === $.BROWSERS.IE && $.Browser.version < 9 ) { tracker.element.setPointerCapture( gPoint.id );
tracker.element.setCapture( true ); $.console.log('element.setPointerCapture() called');
} else { } else {
eventParams = getCaptureEventParams( tracker, $.MouseTracker.havePointerEvents ? 'pointerevent' : pointerType ); tracker.element.msSetPointerCapture( gPoint.id );
// We emulate mouse capture by hanging listeners on the document object. $.console.log('element.msSetPointerCapture() called');
// (Note we listen on the capture phase so the captured handlers will get called first)
// eslint-disable-next-line no-use-before-define
if (isInIframe && canAccessEvents(window.top)) {
$.addEvent(
window.top,
eventParams.upName,
eventParams.upHandler,
true
);
} }
} else {
tracker.element.setCapture( true );
$.console.log('element.setCapture() called');
}
} else {
// Emulate mouse capture by hanging listeners on the document object.
// (Note we listen on the capture phase so the captured handlers will get called first)
// eslint-disable-next-line no-use-before-define
$.console.log('Emulated mouse capture set');
eventParams = getCaptureEventParams( tracker, $.MouseTracker.havePointerEvents ? 'pointerevent' : gPoint.type );
if (isInIframe && canAccessEvents(window.top)) {
$.addEvent( $.addEvent(
$.MouseTracker.captureElement, window.top,
eventParams.upName, eventParams.upName,
eventParams.upHandler, eventParams.upHandler,
true true
); );
$.addEvent(
$.MouseTracker.captureElement,
eventParams.moveName,
eventParams.moveHandler,
true
);
} }
$.addEvent(
$.MouseTracker.captureElement,
eventParams.upName,
eventParams.upHandler,
true
);
$.addEvent(
$.MouseTracker.captureElement,
eventParams.moveName,
eventParams.moveHandler,
true
);
} }
updatePointerCaptured( tracker, gPoint, true );
} }
@ -1566,42 +1620,50 @@
* @private * @private
* @inner * @inner
*/ */
function releasePointer( tracker, pointerType, pointerCount ) { function releasePointer( tracker, gPoint ) {
var pointsList = tracker.getActivePointersListByType( pointerType ), var eventParams;
eventParams;
pointsList.captureCount -= (pointerCount || 1); if ( $.MouseTracker.havePointerCapture ) {
if ( $.MouseTracker.havePointerEvents ) {
if ( pointsList.captureCount === 0 ) { if ( $.MouseTracker.unprefixedPointerEvents ) {
if ( $.Browser.vendor === $.BROWSERS.IE && $.Browser.version < 9 ) { tracker.element.releasePointerCapture( gPoint.id );
tracker.element.releaseCapture(); $.console.log('element.releasePointerCapture() called');
} else { } else {
eventParams = getCaptureEventParams( tracker, $.MouseTracker.havePointerEvents ? 'pointerevent' : pointerType ); tracker.element.msReleasePointerCapture( gPoint.id );
// We emulate mouse capture by hanging listeners on the document object. $.console.log('element.msReleasePointerCapture() called');
// (Note we listen on the capture phase so the captured handlers will get called first)
// eslint-disable-next-line no-use-before-define
if (isInIframe && canAccessEvents(window.top)) {
$.removeEvent(
window.top,
eventParams.upName,
eventParams.upHandler,
true
);
} }
} else {
tracker.element.releaseCapture();
$.console.log('element.releaseCapture() called');
}
} else {
// Emulate mouse capture by hanging listeners on the document object.
// (Note we listen on the capture phase so the captured handlers will get called first)
$.console.log('Emulated mouse capture release');
eventParams = getCaptureEventParams( tracker, $.MouseTracker.havePointerEvents ? 'pointerevent' : gPoint.type );
if (isInIframe && canAccessEvents(window.top)) {
$.removeEvent( $.removeEvent(
$.MouseTracker.captureElement, window.top,
eventParams.moveName,
eventParams.moveHandler,
true
);
$.removeEvent(
$.MouseTracker.captureElement,
eventParams.upName, eventParams.upName,
eventParams.upHandler, eventParams.upHandler,
true true
); );
} }
$.removeEvent(
$.MouseTracker.captureElement,
eventParams.moveName,
eventParams.moveHandler,
true
);
$.removeEvent(
$.MouseTracker.captureElement,
eventParams.upName,
eventParams.upHandler,
true
);
} }
updatePointerCaptured( tracker, gPoint, false );
} }
@ -1612,9 +1674,12 @@
* @inner * @inner
*/ */
function getPointerType( event ) { function getPointerType( event ) {
// Note: IE pointer events bug - sends invalid pointerType on lostpointercapture events
// and possibly other events. We rely on sane, valid property values in DOM events, so for
// IE, when the pointerType is missing, we'll default to 'mouse'...should be right most of the time
var pointerTypeStr; var pointerTypeStr;
if ( $.MouseTracker.unprefixedPointerEvents ) { if ( $.MouseTracker.unprefixedPointerEvents ) {
pointerTypeStr = event.pointerType; pointerTypeStr = event.pointerType || (( $.Browser.vendor === $.BROWSERS.IE ) ? 'mouse' : '');
} else { } else {
// IE10 // IE10
// MSPOINTER_TYPE_TOUCH: 0x00000002 // MSPOINTER_TYPE_TOUCH: 0x00000002
@ -1632,7 +1697,7 @@
pointerTypeStr = 'mouse'; pointerTypeStr = 'mouse';
break; break;
default: default:
pointerTypeStr = ''; pointerTypeStr = 'mouse';
} }
} }
return pointerTypeStr; return pointerTypeStr;
@ -1934,6 +1999,24 @@
} }
/**
* TODO Never actually seen this event fired, documentation is tough to find
* @private
* @inner
*/
function onLoseCapture( tracker, event ) {
$.console.log('losecapture ' + (tracker.userData ? tracker.userData.toString() : '') + ' ' + (event.target === tracker.element ? 'tracker.element' : ''));
event = $.getEvent( event );
var gPoint = {
id: $.MouseTracker.mousePointerId,
type: 'mouse'
};
updatePointerCaptured( tracker, gPoint, false );
}
/** /**
* @private * @private
* @inner * @inner
@ -2072,6 +2155,8 @@
event = $.getEvent( event ); event = $.getEvent( event );
//$.console.log('onMouseDown ' + (tracker.userData ? tracker.userData.toString() : ''));
gPoint = { gPoint = {
id: $.MouseTracker.mousePointerId, id: $.MouseTracker.mousePointerId,
type: 'mouse', type: 'mouse',
@ -2080,14 +2165,16 @@
currentTime: $.now() currentTime: $.now()
}; };
if ( updatePointersDown( tracker, event, [ gPoint ], getStandardizedButton( event.button ) ) ) { $.cancelEvent( event );
$.stopEvent( event ); $.stopEvent( event );
capturePointer( tracker, 'mouse' ); // if ( updatePointersDown( tracker, event, [ gPoint ], getStandardizedButton( event.button ) ) ) {
} // $.stopEvent( event );
capturePointer( tracker, gPoint );
// }
if ( tracker.clickHandler || tracker.dblClickHandler || tracker.pressHandler || tracker.dragHandler || tracker.dragEndHandler ) { // if ( tracker.clickHandler || tracker.dblClickHandler || tracker.pressHandler || tracker.dragHandler || tracker.dragEndHandler ) {
$.cancelEvent( event ); // $.cancelEvent( event );
} // }
} }
@ -2121,6 +2208,8 @@
event = $.getEvent( event ); event = $.getEvent( event );
//$.console.log('onMouseUp ' + (tracker.userData ? tracker.userData.toString() : ''));
gPoint = { gPoint = {
id: $.MouseTracker.mousePointerId, id: $.MouseTracker.mousePointerId,
type: 'mouse', type: 'mouse',
@ -2129,9 +2218,11 @@
currentTime: $.now() currentTime: $.now()
}; };
if ( updatePointersUp( tracker, event, [ gPoint ], getStandardizedButton( event.button ) ) ) { $.cancelEvent( event );
releasePointer( tracker, 'mouse' ); $.stopEvent( event );
} // if ( updatePointersUp( tracker, event, [ gPoint ], getStandardizedButton( event.button ) ) ) {
releasePointer( tracker, gPoint );
// }
} }
@ -2140,7 +2231,9 @@
* @inner * @inner
*/ */
function onMouseMove( tracker, event ) { function onMouseMove( tracker, event ) {
handleMouseMove( tracker, event ); // handleMouseMove( tracker, event );
$.cancelEvent( event );
$.stopEvent( event );
} }
@ -2178,32 +2271,34 @@
} }
/** //TODO Revisit this if there's still an issue. The PointerEvent model should have no problems
* @private // like the issue this code attempts to fix.
* @inner // /**
*/ // * @private
function abortContacts( tracker, event, pointsList ) { // * @inner
var i, // */
gPointCount = pointsList.getLength(), // function abortContacts( tracker, event, pointsList ) {
abortGPoints = []; // var i,
// gPointCount = pointsList.getLength(),
// abortGPoints = [];
// Check contact count for hoverable pointer types before aborting // // Check contact count for hoverable pointer types before aborting
if (pointsList.type === 'touch' || pointsList.contacts > 0) { // if (pointsList.type === 'touch' || pointsList.contacts > 0) {
for ( i = 0; i < gPointCount; i++ ) { // for ( i = 0; i < gPointCount; i++ ) {
abortGPoints.push( pointsList.getByIndex( i ) ); // abortGPoints.push( pointsList.getByIndex( i ) );
} // }
if ( abortGPoints.length > 0 ) { // if ( abortGPoints.length > 0 ) {
// simulate touchend/mouseup // // simulate touchend/mouseup
updatePointersUp( tracker, event, abortGPoints, 0 ); // 0 means primary button press/release or touch contact // updatePointersUp( tracker, event, abortGPoints, 0 ); // 0 means primary button press/release or touch contact
// release pointer capture // // release pointer capture
pointsList.captureCount = 1; // pointsList.captureCount = 1;
releasePointer( tracker, pointsList.type ); // //releasePointer( tracker, pointsList.type );
// simulate touchleave/mouseout // // simulate touchleave/mouseout
updatePointersLeave( tracker, event, abortGPoints ); // updatePointersLeave( tracker, event, abortGPoints );
} // }
} // }
} // }
/** /**
@ -2221,9 +2316,16 @@
time = $.now(); time = $.now();
//$.console.log('onTouchStart ' + (tracker.userData ? tracker.userData.toString() : ''));
//TODO Revisit this if there's still an issue. The PointerEvent model should have no problems
// like the issue this code attempts to fix.
// if ( pointsList.getLength() > event.touches.length - touchCount ) {
// $.console.warn('Tracked touch contact count doesn\'t match event.touches.length. Removing all tracked touch pointers.');
// abortContacts( tracker, event, pointsList );
// }
if ( pointsList.getLength() > event.touches.length - touchCount ) { if ( pointsList.getLength() > event.touches.length - touchCount ) {
$.console.warn('Tracked touch contact count doesn\'t match event.touches.length. Removing all tracked touch pointers.'); $.console.warn('Tracked touch contact count doesn\'t match event.touches.length');
abortContacts( tracker, event, pointsList );
} }
for ( i = 0; i < touchCount; i++ ) { for ( i = 0; i < touchCount; i++ ) {
@ -2256,12 +2358,17 @@
} }
} }
if ( updatePointersDown( tracker, event, gPoints, 0 ) ) { // 0 means primary button press/release or touch contact $.cancelEvent( event );
$.stopEvent( event ); $.stopEvent( event );
capturePointer( tracker, 'touch', touchCount ); // if ( updatePointersDown( tracker, event, gPoints, 0 ) ) { // 0 means primary button press/release or touch contact
// $.stopEvent( event );
// }
for ( i = 0; i < touchCount; i++ ) {
updatePointerCaptured( tracker, gPoints[ i ], true );
} }
$.cancelEvent( event ); // $.cancelEvent( event );
} }
@ -2301,6 +2408,8 @@
time = $.now(); time = $.now();
//$.console.log('onTouchEnd ' + (tracker.userData ? tracker.userData.toString() : ''));
for ( i = 0; i < touchCount; i++ ) { for ( i = 0; i < touchCount; i++ ) {
gPoints.push( { gPoints.push( {
id: event.changedTouches[ i ].identifier, id: event.changedTouches[ i ].identifier,
@ -2311,8 +2420,13 @@
} ); } );
} }
if ( updatePointersUp( tracker, event, gPoints, 0 ) ) { $.cancelEvent( event );
releasePointer( tracker, 'touch', touchCount ); $.stopEvent( event );
// //if ( updatePointersUp( tracker, event, gPoints, 0 ) ) {}
// updatePointersUp( tracker, event, gPoints, 0 );
for ( i = 0; i < touchCount; i++ ) {
updatePointerCaptured( tracker, gPoints[ i ], false );
} }
// simulate touchleave on our tracked element // simulate touchleave on our tracked element
@ -2335,7 +2449,7 @@
} }
} }
$.cancelEvent( event ); // $.cancelEvent( event );
} }
@ -2344,7 +2458,9 @@
* @inner * @inner
*/ */
function onTouchMove( tracker, event ) { function onTouchMove( tracker, event ) {
handleTouchMove( tracker, event ); // handleTouchMove( tracker, event );
$.cancelEvent( event );
$.stopEvent( event );
} }
@ -2391,9 +2507,12 @@
* @inner * @inner
*/ */
function onTouchCancel( tracker, event ) { function onTouchCancel( tracker, event ) {
var pointsList = tracker.getActivePointersListByType('touch'); //var pointsList = tracker.getActivePointersListByType('touch');
abortContacts( tracker, event, pointsList ); $.console.log('onTouchCancel ' + (tracker.userData ? tracker.userData.toString() : ''));
//TODO handle only the canceled touches
//abortContacts( tracker, event, pointsList );
} }
@ -2419,6 +2538,44 @@
} }
/**
* @private
* @inner
*/
function onGotPointerCapture( tracker, event ) {
$.console.log('gotpointercapture ' + (tracker.userData ? tracker.userData.toString() : '') + ' ' + (event.target === tracker.element ? 'tracker.element' : ''));
if ( event.target === tracker.element ) {
//$.console.log('gotpointercapture ' + (tracker.userData ? tracker.userData.toString() : ''));
////$.cancelEvent( event ); not cancelable!
//$.stopEvent( event );
updatePointerCaptured( tracker, {
id: event.pointerId,
type: getPointerType( event )
}, true );
}
}
/**
* @private
* @inner
*/
function onLostPointerCapture( tracker, event ) {
$.console.log('lostpointercapture ' + (tracker.userData ? tracker.userData.toString() : '') + ' ' + (event.target === tracker.element ? 'tracker.element' : ''));
if ( event.target === tracker.element ) {
//$.console.log('lostpointercapture ' + (tracker.userData ? tracker.userData.toString() : ''));
////$.cancelEvent( event ); not cancelable!
//$.stopEvent( event );
updatePointerCaptured( tracker, {
id: event.pointerId,
type: getPointerType( event )
}, false );
}
}
/** /**
* @private * @private
* @inner * @inner
@ -2541,6 +2698,18 @@
*/ */
function onPointerDown( tracker, event ) { function onPointerDown( tracker, event ) {
var gPoint; var gPoint;
// var shouldCapture;
//$.console.log('onPointerDown ' + (tracker.userData ? tracker.userData.toString() : ''));
// Most browsers implicitly capture touch pointer events...handle that appropriately
// Note IE10 with its prefixed PointerEvent model...no IE versions have
// element.hasPointerCapture() so no implicit pointer capture
var implicitlyCaptured = (tracker.element.hasPointerCapture && $.MouseTracker.unprefixedPointerEvents) ?
tracker.element.hasPointerCapture(event.pointerId) : false;
if (implicitlyCaptured) {
$.console.log('implicitlyCaptured ' + (tracker.userData ? tracker.userData.toString() : '') + ' ' + (event.target === tracker.element ? 'tracker.element' : ''));
}
gPoint = { gPoint = {
id: event.pointerId, id: event.pointerId,
@ -2550,14 +2719,31 @@
currentTime: $.now() currentTime: $.now()
}; };
if ( updatePointersDown( tracker, event, [ gPoint ], event.button ) ) { $.cancelEvent( event );
$.stopEvent( event ); $.stopEvent( event );
capturePointer( tracker, gPoint.type ); if (!implicitlyCaptured) {
capturePointer( tracker, gPoint );
} }
if ( tracker.clickHandler || tracker.dblClickHandler || tracker.pressHandler || tracker.dragHandler || tracker.dragEndHandler || tracker.pinchHandler ) { // shouldCapture = updatePointersDown( tracker, event, [ gPoint ], event.button );
$.cancelEvent( event );
} // if ( shouldCapture ) {
// $.cancelEvent( event );
// }
// if ( shouldCapture && !implicitlyCaptured ) {
// $.stopEvent( event );
// capturePointer( tracker, gPoint );
// } else if ( !shouldCapture && implicitlyCaptured ) {
// $.stopEvent( event );
// releasePointer( tracker, gPoint ); //TODO should we do this? Investigate when implementing bubble handling
// } else if ( shouldCapture && implicitlyCaptured ) {
// $.stopEvent( event );
// }
// if ( tracker.clickHandler || tracker.dblClickHandler || tracker.pressHandler || tracker.dragHandler || tracker.dragEndHandler || tracker.pinchHandler ) {
// $.cancelEvent( event );
// }
} }
@ -2593,6 +2779,8 @@
function handlePointerUp( tracker, event ) { function handlePointerUp( tracker, event ) {
var gPoint; var gPoint;
//$.console.log('onPointerUp ' + (tracker.userData ? tracker.userData.toString() : ''));
gPoint = { gPoint = {
id: event.pointerId, id: event.pointerId,
type: getPointerType( event ), type: getPointerType( event ),
@ -2601,9 +2789,11 @@
currentTime: $.now() currentTime: $.now()
}; };
if ( updatePointersUp( tracker, event, [ gPoint ], event.button ) ) { $.cancelEvent( event );
releasePointer( tracker, gPoint.type ); $.stopEvent( event );
} //if ( updatePointersUp( tracker, event, [ gPoint ], event.button ) ) {
releasePointer( tracker, gPoint );
//}
} }
@ -2612,7 +2802,9 @@
* @inner * @inner
*/ */
function onPointerMove( tracker, event ) { function onPointerMove( tracker, event ) {
handlePointerMove( tracker, event ); // handlePointerMove( tracker, event );
$.cancelEvent( event );
$.stopEvent( event );
} }
@ -2657,6 +2849,7 @@
* @inner * @inner
*/ */
function onPointerCancel( tracker, event ) { function onPointerCancel( tracker, event ) {
$.console.log('pointercancel ' + (tracker.userData ? tracker.userData.toString() : '') + ' ' + (event.isPrimary ? 'isPrimary' : ''));
var gPoint; var gPoint;
gPoint = { gPoint = {
@ -2772,7 +2965,7 @@
curGPoint = updateGPoint; curGPoint = updateGPoint;
} else { } else {
// Initialize for tracking and add to the tracking list // Initialize for tracking and add to the tracking list
curGPoint.captured = false; curGPoint.captured = false; // Handled by updatePointerCaptured()
curGPoint.insideElementPressed = false; curGPoint.insideElementPressed = false;
curGPoint.insideElement = true; curGPoint.insideElement = true;
startTrackingPointer( pointsList, curGPoint ); startTrackingPointer( pointsList, curGPoint );
@ -2894,7 +3087,7 @@
if ( updateGPoint ) { if ( updateGPoint ) {
curGPoint = updateGPoint; curGPoint = updateGPoint;
} else { } else {
//curGPoint.captured = false; // Tracked by updatePointersEnter //curGPoint.captured = false; // Handled by updatePointerCaptured()
curGPoint.insideElementPressed = false; curGPoint.insideElementPressed = false;
//curGPoint.insideElement = true; // Tracked by updatePointersEnter //curGPoint.insideElement = true; // Tracked by updatePointersEnter
} }
@ -3047,13 +3240,15 @@
} }
} }
// Some pointers may steal control from another pointer without firing the appropriate release events //TODO Revisit this if there's still an issue. The PointerEvent model should have no problems
// e.g. Touching a screen while click-dragging with certain mice. // like the issue this code attempts to fix.
var otherPointsLists = tracker.getActivePointersListsExceptType(gPoints[ 0 ].type); // // Some pointers may steal control from another pointer without firing the appropriate release events
for (i = 0; i < otherPointsLists.length; i++) { // // e.g. Touching a screen while click-dragging with certain mice.
//If another pointer has contact, simulate the release // var otherPointsLists = tracker.getActivePointersListsExceptType(gPoints[ 0 ].type);
abortContacts(tracker, event, otherPointsLists[i]); // No-op if no active pointer // for (i = 0; i < otherPointsLists.length; i++) {
} // //If another pointer has contact, simulate the release
// abortContacts(tracker, event, otherPointsLists[i]); // No-op if no active pointer
// }
// Only capture and track primary button, pen, and touch contacts // Only capture and track primary button, pen, and touch contacts
if ( buttonChanged !== 0 ) { if ( buttonChanged !== 0 ) {
@ -3086,7 +3281,7 @@
if ( updateGPoint ) { if ( updateGPoint ) {
// Already tracking the pointer...update it // Already tracking the pointer...update it
updateGPoint.captured = true; //updateGPoint.captured = true; // Handled by updatePointerCaptured()
updateGPoint.insideElementPressed = true; updateGPoint.insideElementPressed = true;
updateGPoint.insideElement = true; updateGPoint.insideElement = true;
updateGPoint.contactPos = curGPoint.currentPos; updateGPoint.contactPos = curGPoint.currentPos;
@ -3099,7 +3294,7 @@
curGPoint = updateGPoint; curGPoint = updateGPoint;
} else { } else {
// Initialize for tracking and add to the tracking list (no pointerover or pointermove event occurred before this) // Initialize for tracking and add to the tracking list (no pointerover or pointermove event occurred before this)
curGPoint.captured = true; curGPoint.captured = false; // Handled by updatePointerCaptured()
curGPoint.insideElementPressed = true; curGPoint.insideElementPressed = true;
curGPoint.insideElement = true; curGPoint.insideElement = true;
startTrackingPointer( pointsList, curGPoint ); startTrackingPointer( pointsList, curGPoint );
@ -3244,20 +3439,25 @@
} }
} }
// A primary mouse button may have been released while the non-primary button was down //TODO Revisit this if there's still an issue. The PointerEvent model should have no problems
var otherPointsList = tracker.getActivePointersListByType("mouse"); // like the issue this code attempts to fix.
// Stop tracking the mouse; see https://github.com/openseadragon/openseadragon/pull/1223 // // A primary mouse button may have been released while the non-primary button was down
abortContacts(tracker, event, otherPointsList); // No-op if no active pointer // var otherPointsList = tracker.getActivePointersListByType("mouse");
// // Stop tracking the mouse; see https://github.com/openseadragon/openseadragon/pull/1223
// abortContacts(tracker, event, otherPointsList); // No-op if no active pointer
return false; return false;
} }
// OS-specific gestures (e.g. swipe up with four fingers in iPadOS 13) //TODO Revisit this if there's still an issue. The PointerEvent model should have no problems
if (typeof gPoints[ 0 ].currentPos === "undefined") { // like the issue this code attempts to fix.
abortContacts(tracker, event, pointsList); // // OS-specific gestures (e.g. swipe up with four fingers in iPadOS 13)
// if (typeof gPoints[ 0 ].currentPos === "undefined") {
// $.console.log('typeof gPoints[ 0 ].currentPos === "undefined" ' + (tracker.userData ? tracker.userData.toString() : ''));
// abortContacts(tracker, event, pointsList);
return false; // return false;
} // }
for ( i = 0; i < gPointCount; i++ ) { for ( i = 0; i < gPointCount; i++ ) {
curGPoint = gPoints[ i ]; curGPoint = gPoints[ i ];
@ -3265,7 +3465,7 @@
if ( updateGPoint ) { if ( updateGPoint ) {
// Update the pointer, stop tracking it if not still in this element // Update the pointer, stop tracking it if not still in this element
if ( updateGPoint.captured ) { if ( updateGPoint.captured ) {
updateGPoint.captured = false; //updateGPoint.captured = false; // Handled by updatePointerCaptured()
releaseCapture = true; releaseCapture = true;
wasCaptured = true; wasCaptured = true;
} }
@ -3314,7 +3514,7 @@
} }
// Drag End // Drag End
if ( tracker.dragEndHandler && !updateGPoint.currentPos.equals( updateGPoint.contactPos ) ) { if ( tracker.dragEndHandler ) {
propagate = tracker.dragEndHandler( propagate = tracker.dragEndHandler(
{ {
eventSource: tracker, eventSource: tracker,
@ -3432,6 +3632,41 @@
} }
/**
* Sets or resets the captured property on the tracked pointer matching the passed gPoint's id/type
*
* @function
* @private
* @inner
* @param {OpenSeadragon.MouseTracker} tracker
* A reference to the MouseTracker instance.
* @param {Object} gPoint
* An object with id and type properties describing the pointer to update.
* @param {Boolean} isCaptured
* Value to set the captured property to.
*/
function updatePointerCaptured( tracker, gPoint, isCaptured ) {
var pointsList = tracker.getActivePointersListByType( gPoint.type );
var updateGPoint = pointsList.getById( gPoint.id );
if ( updateGPoint ) {
if ( isCaptured && !updateGPoint.captured ) {
updateGPoint.captured = true;
pointsList.captureCount++;
} else if ( !isCaptured && updateGPoint.captured ) {
updateGPoint.captured = false;
pointsList.captureCount--;
if ( pointsList.captureCount < 0 ) {
pointsList.captureCount = 0;
$.console.warn('updatePointerCaptured() - pointsList.captureCount went negative');
}
}
} else {
$.console.warn('updatePointerCaptured() called on untracked pointer');
}
}
/** /**
* Call when pointer(s) change coordinates, button state, pressure, tilt, or contact geometry (e.g. width and height) * Call when pointer(s) change coordinates, button state, pressure, tilt, or contact geometry (e.g. width and height)
* *
@ -3475,7 +3710,7 @@
updateGPoint.currentTime = curGPoint.currentTime; updateGPoint.currentTime = curGPoint.currentTime;
} else { } else {
// Initialize for tracking and add to the tracking list (no pointerover or pointerdown event occurred before this) // Initialize for tracking and add to the tracking list (no pointerover or pointerdown event occurred before this)
curGPoint.captured = false; curGPoint.captured = false; // Handled by updatePointerCaptured()
curGPoint.insideElementPressed = false; curGPoint.insideElementPressed = false;
curGPoint.insideElement = true; curGPoint.insideElement = true;
startTrackingPointer( pointsList, curGPoint ); startTrackingPointer( pointsList, curGPoint );
@ -3643,32 +3878,4 @@
} }
} }
/**
* True if inside an iframe, otherwise false.
* @member {Boolean} isInIframe
* @private
* @inner
*/
var isInIframe = (function() {
try {
return window.self !== window.top;
} catch (e) {
return true;
}
})();
/**
* @function
* @private
* @inner
* @returns {Boolean} True if the target supports DOM Level 2 event subscription methods, otherwise false.
*/
function canAccessEvents (target) {
try {
return target.addEventListener && target.removeEventListener;
} catch (e) {
return false;
}
}
}(OpenSeadragon)); }(OpenSeadragon));

8
src/viewer.js
View File

@ -2933,9 +2933,11 @@ function onCanvasEnter( event ) {
function onCanvasLeave( event ) { function onCanvasLeave( event ) {
if (window.location !== window.parent.location){ //TODO Revisit this if there's still an issue. The PointerEvent model should have no problems
$.MouseTracker.resetAllMouseTrackers(); // like the issue this code attempts to fix.
} // if (window.location !== window.parent.location){
// $.MouseTracker.resetAllMouseTrackers();
// }
/** /**
* Raised when a pointer leaves the {@link OpenSeadragon.Viewer#canvas} element. * Raised when a pointer leaves the {@link OpenSeadragon.Viewer#canvas} element.