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Save the context of the full image as well.

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This commit is contained in:
Antoine Vandecreme 2015-11-02 19:57:13 -05:00
parent 37ca9235f8
commit 0c75b45075
1 changed files with 3 additions and 11 deletions
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14
src/imagetilesource.js
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@ -234,12 +234,8 @@
return levels; return levels;
} }
var currentWidth = Math.floor(image.naturalWidth / 2); var currentWidth = image.naturalWidth;
var currentHeight = Math.floor(image.naturalHeight / 2); var currentHeight = image.naturalHeight;
if (currentWidth < minWidth || currentHeight < minHeight) {
return levels;
}
var bigCanvas = document.createElement("canvas"); var bigCanvas = document.createElement("canvas");
var bigContext = bigCanvas.getContext("2d"); var bigContext = bigCanvas.getContext("2d");
@ -247,16 +243,12 @@
bigCanvas.width = currentWidth; bigCanvas.width = currentWidth;
bigCanvas.height = currentHeight; bigCanvas.height = currentHeight;
bigContext.drawImage(image, 0, 0, currentWidth, currentHeight); bigContext.drawImage(image, 0, 0, currentWidth, currentHeight);
levels[0].context2D = bigContext;
if ($.isCanvasTainted(bigContext.canvas)) { if ($.isCanvasTainted(bigContext.canvas)) {
// If the canvas is tainted, we can't compute the pyramid. // If the canvas is tainted, we can't compute the pyramid.
return levels; return levels;
} }
levels.splice(0, 0, {
context2D: bigContext,
width: currentWidth,
height: currentHeight
});
while (currentWidth >= minWidth * 2 && currentHeight >= minHeight * 2) { while (currentWidth >= minWidth * 2 && currentHeight >= minHeight * 2) {
currentWidth = Math.floor(currentWidth / 2); currentWidth = Math.floor(currentWidth / 2);