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Add animated zoom to keyboard zoom interaction

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This commit is contained in:
Tom Payne
2013-01-17 15:37:32 +01:00
parent 90b7cfb330
commit 9428a94968
1 changed files with 8 additions and 1 deletions
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9
src/ol/interaction/keyboardzoominteraction.js
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@@ -8,6 +8,12 @@ goog.require('ol.View2D');
goog.require('ol.interaction.Interaction');
/**
* @define {number} Zoom duration.
*/
ol.interaction.KEYBOARD_ZOOM_DURATION = 100;
/**
* @constructor
@@ -31,10 +37,11 @@ ol.interaction.KeyboardZoom.prototype.handleMapBrowserEvent =
if (charCode == '+'.charCodeAt(0) || charCode == '-'.charCodeAt(0)) {
var map = mapBrowserEvent.map;
var delta = (charCode == '+'.charCodeAt(0)) ? 4 : -4;
map.requestRenderFrame();
// FIXME works for View2D only
var view = map.getView();
goog.asserts.assert(view instanceof ol.View2D);
view.zoom(map, delta);
view.zoom(map, delta, undefined, ol.interaction.KEYBOARD_ZOOM_DURATION);
keyEvent.preventDefault();
mapBrowserEvent.preventDefault();
}