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Added a pixelRatio adjust to the canvasTileLayer 'forEachLayerAtPixel' method

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This method was composing a frame that was only accurate for devices
with a pixelRatio of 1. Now the canvas widths and heights are
multiplied beforehand by the pixelRatio. #5601
This commit is contained in:
Benjamin
2016-08-15 10:15:17 -04:00
parent 3dd21af721
commit c3b66743fe
1 changed files with 3 additions and 2 deletions
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5
src/ol/renderer/canvas/tilelayer.js
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@@ -198,8 +198,9 @@ ol.renderer.canvas.TileLayer.prototype.forEachLayerAtPixel = function(
pixel, frameState, callback, thisArg) {
var canvas = this.context.canvas;
var size = frameState.size;
canvas.width = size[0];
canvas.height = size[1];
var pixelRatio = frameState.pixelRatio;
canvas.width = size[0] * pixelRatio;
canvas.height = size[1] * pixelRatio;
this.composeFrame(frameState, this.getLayer().getLayerState(), this.context);
var imageData = this.context.getImageData(