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Merge pull request #1690 from byCedric/fix/canvas-dimensions-ie10-ie9

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Updated retina scale to allow rendering in IE10 and IE9.
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Evert Timberg
2015-11-24 08:00:41 -05:00
parent 830cf33c1f ae51789c32
commit e6ea34e453
1 changed files with 6 additions and 6 deletions
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12
src/core/core.helpers.js
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@@ -741,12 +741,12 @@
var ctx = chart.ctx;
var width = chart.canvas.width;
var height = chart.canvas.height;
chart.currentDevicePixelRatio = window.devicePixelRatio || 1;
var pixelRatio = chart.currentDevicePixelRatio = window.devicePixelRatio || 1;
if (window.devicePixelRatio !== 1) {
ctx.canvas.height = height * window.devicePixelRatio;
ctx.canvas.width = width * window.devicePixelRatio;
ctx.scale(window.devicePixelRatio, window.devicePixelRatio);
if (pixelRatio !== 1) {
ctx.canvas.height = height * pixelRatio;
ctx.canvas.width = width * pixelRatio;
ctx.scale(pixelRatio, pixelRatio);
ctx.canvas.style.width = width + 'px';
ctx.canvas.style.height = height + 'px';
@@ -754,7 +754,7 @@
// Store the device pixel ratio so that we can go backwards in `destroy`.
// The devicePixelRatio changes with zoom, so there are no guarantees that it is the same
// when destroy is called
chart.originalDevicePixelRatio = chart.originalDevicePixelRatio || window.devicePixelRatio;
chart.originalDevicePixelRatio = chart.originalDevicePixelRatio || pixelRatio;
}
},
//-- Canvas methods