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Use ol.dom.createCanvasContext2D in ol.source.ImageStatic

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This commit is contained in:
Frederic Junod
2016-04-05 11:20:42 +02:00
parent 38718ee5e6
commit f645d81fee
1 changed files with 7 additions and 7 deletions
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14
src/ol/source/imagestaticsource.js
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@@ -5,6 +5,7 @@ goog.require('ol.events.EventType');
goog.require('ol.Image');
goog.require('ol.ImageLoadFunctionType');
goog.require('ol.ImageState');
goog.require('ol.dom');
goog.require('ol.extent');
goog.require('ol.proj');
goog.require('ol.source.Image');
@@ -78,17 +79,16 @@ ol.source.ImageStatic.prototype.handleImageChange = function(evt) {
imageWidth = this.imageSize_[0];
imageHeight = this.imageSize_[1];
} else {
imageWidth = image.width;
imageHeight = image.height;
// TODO: remove the type cast when a closure-compiler > 20160315 is used.
// see: https://github.com/google/closure-compiler/pull/1664
imageWidth = /** @type {number} */ (image.width);
imageHeight = /** @type {number} */ (image.height);
}
var resolution = ol.extent.getHeight(imageExtent) / imageHeight;
var targetWidth = Math.ceil(ol.extent.getWidth(imageExtent) / resolution);
if (targetWidth != imageWidth) {
var canvas = /** @type {HTMLCanvasElement} */
(document.createElement('canvas'));
canvas.width = targetWidth;
canvas.height = /** @type {number} */ (imageHeight);
var context = canvas.getContext('2d');
var context = ol.dom.createCanvasContext2D(targetWidth, imageHeight);
var canvas = context.canvas;
context.drawImage(image, 0, 0, imageWidth, imageHeight,
0, 0, canvas.width, canvas.height);
this.image_.setImage(canvas);