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Merge pull request #1484 from francescocretti/hotfix/minimapDrag

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preventDefaultAction in canvas-drag on minimap
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Ian Gilman 2018-06-29 10:26:45 -07:00 committed by GitHub
commit 7b73768b3b
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1 changed files with 31 additions and 2 deletions
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33
src/navigator.js
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@ -443,8 +443,37 @@ function onCanvasClick( event ) {
* @function
*/
function onCanvasDrag( event ) {
if ( this.viewer.viewport ) {
if( !this.panHorizontal ){
var canvasDragEventArgs = {
tracker: event.eventSource,
position: event.position,
delta: event.delta,
speed: event.speed,
direction: event.direction,
shift: event.shift,
originalEvent: event.originalEvent,
preventDefaultAction: event.preventDefaultAction
};
/**
* Raised when a drag event occurs on the {@link OpenSeadragon.Viewer#navigator} element.
*
* @event navigator-drag
* @memberof OpenSeadragon.Viewer
* @type {object}
* @property {OpenSeadragon.Viewer} eventSource - A reference to the Viewer which raised this event.
* @property {OpenSeadragon.MouseTracker} tracker - A reference to the MouseTracker which originated this event.
* @property {OpenSeadragon.Point} position - The position of the event relative to the tracked element.
* @property {OpenSeadragon.Point} delta - The x,y components of the difference between start drag and end drag.
* @property {Number} speed - Current computed speed, in pixels per second.
* @property {Number} direction - Current computed direction, expressed as an angle counterclockwise relative to the positive X axis (-pi to pi, in radians). Only valid if speed > 0.
* @property {Boolean} shift - True if the shift key was pressed during this event.
* @property {Object} originalEvent - The original DOM event.
* @property {?Object} userData - Arbitrary subscriber-defined object.
* @property {Boolean} preventDefaultAction - Set to true to prevent default click to zoom behaviour. Default: false.
*/
this.viewer.raiseEvent('navigator-drag', canvasDragEventArgs);
if ( !canvasDragEventArgs.preventDefaultAction && this.viewer.viewport ) {
if( !this.panHorizontal ){
event.delta.x = 0;
}
if( !this.panVertical ){