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Merge pull request #2702 from achu1998/expose-nav-button

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Exposed Zoom In and Out methods for end users
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Ian Gilman 2025-04-02 09:33:44 -07:00 • committed by GitHub
commit 479ef0ec82
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1 changed files with 68 additions and 49 deletions
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117
src/viewer.js
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@ -2005,11 +2005,11 @@ $.extend( $.Viewer.prototype, $.EventSource.prototype, $.ControlDock.prototype,
//////////////////////////////////////////////////////////////////////////
// Navigation Controls
//////////////////////////////////////////////////////////////////////////
var beginZoomingInHandler = $.delegate( this, beginZoomingIn ),
endZoomingHandler = $.delegate( this, endZooming ),
doSingleZoomInHandler = $.delegate( this, doSingleZoomIn ),
beginZoomingOutHandler = $.delegate( this, beginZoomingOut ),
doSingleZoomOutHandler = $.delegate( this, doSingleZoomOut ),
var beginZoomingInHandler = $.delegate( this, this.startZoomInAction ),
endZoomingHandler = $.delegate( this, this.endZoomAction ),
doSingleZoomInHandler = $.delegate( this, this.singleZoomInAction ),
beginZoomingOutHandler = $.delegate( this, this.startZoomOutAction ),
doSingleZoomOutHandler = $.delegate( this, this.singleZoomOutAction ),
onHomeHandler = $.delegate( this, onHome ),
onFullScreenHandler = $.delegate( this, onFullScreen ),
onRotateLeftHandler = $.delegate( this, onRotateLeft ),
@ -2625,6 +2625,69 @@ $.extend( $.Viewer.prototype, $.EventSource.prototype, $.ControlDock.prototype,
isAnimating: function () {
return THIS[ this.hash ].animating;
},
/**
* Starts continuous zoom-in animation (typically bound to mouse-down on the zoom-in button).
* @function
* @memberof OpenSeadragon.Viewer.prototype
*/
startZoomInAction: function () {
THIS[ this.hash ].lastZoomTime = $.now();
THIS[ this.hash ].zoomFactor = this.zoomPerSecond;
THIS[ this.hash ].zooming = true;
scheduleZoom( this );
},
/**
* Starts continuous zoom-out animation (typically bound to mouse-down on the zoom-out button).
* @function
* @memberof OpenSeadragon.Viewer.prototype
*/
startZoomOutAction: function () {
THIS[ this.hash ].lastZoomTime = $.now();
THIS[ this.hash ].zoomFactor = 1.0 / this.zoomPerSecond;
THIS[ this.hash ].zooming = true;
scheduleZoom( this );
},
/**
* Stops any continuous zoom animation (typically bound to mouse-up/leave events on a button).
* @function
* @memberof OpenSeadragon.Viewer.prototype
*/
endZoomAction: function () {
THIS[ this.hash ].zooming = false;
},
/**
* Performs single-step zoom-in operation (typically bound to click/enter on the zoom-in button).
* @function
* @memberof OpenSeadragon.Viewer.prototype
*/
singleZoomInAction: function () {
if ( this.viewport ) {
THIS[ this.hash ].zooming = false;
this.viewport.zoomBy(
this.zoomPerClick / 1.0
);
this.viewport.applyConstraints();
}
},
/**
* Performs single-step zoom-out operation (typically bound to click/enter on the zoom-out button).
* @function
* @memberof OpenSeadragon.Viewer.prototype
*/
singleZoomOutAction: function () {
if ( this.viewport ) {
THIS[ this.hash ].zooming = false;
this.viewport.zoomBy(
1.0 / this.zoomPerClick
);
this.viewport.applyConstraints();
}
},
});
@ -3957,28 +4020,6 @@ function resolveUrl( prefix, url ) {
}
function beginZoomingIn() {
THIS[ this.hash ].lastZoomTime = $.now();
THIS[ this.hash ].zoomFactor = this.zoomPerSecond;
THIS[ this.hash ].zooming = true;
scheduleZoom( this );
}
function beginZoomingOut() {
THIS[ this.hash ].lastZoomTime = $.now();
THIS[ this.hash ].zoomFactor = 1.0 / this.zoomPerSecond;
THIS[ this.hash ].zooming = true;
scheduleZoom( this );
}
function endZooming() {
THIS[ this.hash ].zooming = false;
}
function scheduleZoom( viewer ) {
$.requestAnimationFrame( $.delegate( viewer, doZoom ) );
}
@ -4002,28 +4043,6 @@ function doZoom() {
}
function doSingleZoomIn() {
if ( this.viewport ) {
THIS[ this.hash ].zooming = false;
this.viewport.zoomBy(
this.zoomPerClick / 1.0
);
this.viewport.applyConstraints();
}
}
function doSingleZoomOut() {
if ( this.viewport ) {
THIS[ this.hash ].zooming = false;
this.viewport.zoomBy(
1.0 / this.zoomPerClick
);
this.viewport.applyConstraints();
}
}
function lightUp() {
if (this.buttonGroup) {
this.buttonGroup.emulateEnter();