User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:184.108.40.206) Gecko/20091109 Ubuntu/9.10 (karmic) Firefox/3.5.5 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:220.127.116.11) Gecko/20091109 Ubuntu/9.10 (karmic) Firefox/3.5.5 Loading a web page in an iframe, I want to copy its content to a canvas using the context2d.drawWindow method. Depending on the size on the region being copied (width x height), I get strange results. if height > 2048 and width <= 2048, it's looking like only the background layer (borders, background colors) is fully drawn in the canvas, with the upper part of the foreground layer (text, pictures) which is actually (height - 2048) pixels height. I tried to add 2048 to the page height, but it's all starting again at 4096... Reproducible: Always Steps to Reproduce: 1. Load the test case in chrome (need chrome privileges to use drawWindow) 2. Play with the width and height parameters Actual Results: 200x200 -> ok 200x2049 -> full background, 1px foreground 200x2148 -> full background, 100px foreground Expected Results: Always copy the requested area with background and foreground
Created attachment 414503 [details] Test case reduced to canvas resize
Attachment #414498 - Attachment is obsolete: true
The problems doesn't come from the selected area, but from the size of the canvas. Copying only 200x200 pixels from the iframe to a 300x300 canvas works, if the canvas is resized to 300x2049, it fails.
Comment on attachment 414503 [details] Test case reduced to canvas resize This test case requires chrome privileges.
I can't reproduce in Firefox 6.0.2. This has likely been fixed since reporting. Please re-open if this isn't the case. Sorry this took so long to triage.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 7 years ago
Resolution: --- → WORKSFORME
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