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Merge pull request #291 from msalsbery/preserve-zoom-on-resize

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Added autoResize option
This commit is contained in:
iangilman 2013-11-26 10:45:27 -08:00
commit c11098326a
4 changed files with 19 additions and 11 deletions
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3
changelog.txt
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@ -57,7 +57,8 @@ OPENSEADRAGON CHANGELOG
* Viewer.innerTracker.scrollHandler: preventDefaultAction == true prevents viewer zooming on mousewheel/pinch
* Fixed: IE8 error with custom buttons - "Object doesn't support this action" (#279)
* Support IIIF servers that don't report tile dimensions (#286)
* Added a static 'version' property to OpenSeadragon. Useful for plugins that require specific OpenSeadragon versions.
* Added an autoResize option. Default is true. When set to false, the viewer takes no action when its container element is resized. (#291)
* Added a static 'version' property to OpenSeadragon. Useful for plugins that require specific OpenSeadragon versions. (#292)
0.9.131:

4
src/openseadragon.js
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@ -224,6 +224,9 @@
* image though it is less effective visually if the HTML5 Canvas is not
* availble on the viewing device.
*
* @property {Boolean} [autoResize=true]
* Set to false to prevent polling for viewer size changes. Useful for providing custom resize behavior.
*
* @property {Number} [pixelsPerWheelLine=40]
* For pixel-resolution scrolling devices, the number of pixels equal to one scroll line.
*
@ -691,6 +694,7 @@ window.OpenSeadragon = window.OpenSeadragon || function( options ){
minZoomImageRatio: 0.9, //-> closer to 0 allows zoom out to infinity
maxZoomPixelRatio: 1.1, //-> higher allows 'over zoom' into pixels
pixelsPerWheelLine: 40,
autoResize: true,
//DEFAULT CONTROL SETTINGS
showSequenceControl: true, //SEQUENCE

18
src/viewer.js
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@ -1896,14 +1896,16 @@ function updateOnce( viewer ) {
//viewer.profiler.beginUpdate();
containerSize = _getSafeElemSize( viewer.container );
if ( !containerSize.equals( THIS[ viewer.hash ].prevContainerSize ) ) {
// maintain image position
var oldBounds = viewer.viewport.getBounds();
var oldCenter = viewer.viewport.getCenter();
resizeViewportAndRecenter(viewer, containerSize, oldBounds, oldCenter);
THIS[ viewer.hash ].prevContainerSize = containerSize;
THIS[ viewer.hash ].forceRedraw = true;
if ( viewer.autoResize ) {
containerSize = _getSafeElemSize( viewer.container );
if ( !containerSize.equals( THIS[ viewer.hash ].prevContainerSize ) ) {
// maintain image position
var oldBounds = viewer.viewport.getBounds();
var oldCenter = viewer.viewport.getCenter();
resizeViewportAndRecenter(viewer, containerSize, oldBounds, oldCenter);
THIS[ viewer.hash ].prevContainerSize = containerSize;
THIS[ viewer.hash ].forceRedraw = true;
}
}
animated = viewer.viewport.update();

5
src/viewport.js
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@ -674,14 +674,15 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
resize: function( newContainerSize, maintain ) {
var oldBounds = this.getBounds(),
newBounds = oldBounds,
widthDeltaFactor = newContainerSize.x / this.containerSize.x;
widthDeltaFactor;
this.containerSize = new $.Point(
newContainerSize.x,
newContainerSize.y
);
if (maintain) {
if ( maintain ) {
widthDeltaFactor = newContainerSize.x / this.containerSize.x;
newBounds.width = oldBounds.width * widthDeltaFactor;
newBounds.height = newBounds.width / this.getAspectRatio();
}