mirror/openseadragon
1
0
Fork 0
mirror of https://github.com/openseadragon/openseadragon.git synced 2024-11-23 05:36:09 +03:00
Code Issues Projects Releases Wiki Activity

Viewport.zoomTo and zoomBy now respect ref point even when immediately = true

Browse Source
This commit is contained in:
Ian Gilman 2016-02-18 15:44:00 -08:00
parent 458bbd61b6
commit de9fa90fac
1 changed files with 33 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
src/viewport.js
View File

@ -765,7 +765,9 @@ $.Viewport.prototype = {
null;
if ( immediately ) {
this.zoomSpring.resetTo( zoom );
this._updateZoom({
resetTo: zoom
});
} else {
this.zoomSpring.springTo( zoom );
}
@ -891,27 +893,7 @@ $.Viewport.prototype = {
* @function
*/
update: function() {
var oldZoomPixel,
newZoomPixel,
deltaZoomPixels,
deltaZoomPoints;
if (this.zoomPoint) {
oldZoomPixel = this.pixelFromPoint( this.zoomPoint, true );
}
this.zoomSpring.update();
if (this.zoomPoint && this.zoomSpring.current.value != this._oldZoom) {
newZoomPixel = this.pixelFromPoint( this.zoomPoint, true );
deltaZoomPixels = newZoomPixel.minus( oldZoomPixel );
deltaZoomPoints = this.deltaPointsFromPixels( deltaZoomPixels, true );
this.centerSpringX.shiftBy( deltaZoomPoints.x );
this.centerSpringY.shiftBy( deltaZoomPoints.y );
} else {
this.zoomPoint = null;
}
this._updateZoom();
this.centerSpringX.update();
this.centerSpringY.update();
@ -927,6 +909,35 @@ $.Viewport.prototype = {
return changed;
},
// private
_updateZoom: function(options) {
var oldZoomPixel,
newZoomPixel,
deltaZoomPixels,
deltaZoomPoints;
if (this.zoomPoint) {
oldZoomPixel = this.pixelFromPoint( this.zoomPoint, true );
}
if (options && options.resetTo) {
this.zoomSpring.resetTo(options.resetTo);
} else {
this.zoomSpring.update();
}
if (this.zoomPoint && this.zoomSpring.current.value != this._oldZoom) {
newZoomPixel = this.pixelFromPoint( this.zoomPoint, true );
deltaZoomPixels = newZoomPixel.minus( oldZoomPixel );
deltaZoomPoints = this.deltaPointsFromPixels( deltaZoomPixels, true );
this.centerSpringX.shiftBy( deltaZoomPoints.x );
this.centerSpringY.shiftBy( deltaZoomPoints.y );
} else {
this.zoomPoint = null;
}
},
/**
* Convert a delta (translation vector) from viewport coordinates to pixels
* coordinates. This method does not take rotation into account.