Closed
Bug 531064
Opened 16 years ago
Closed 14 years ago
context.drawWindow strangeness when height > 2048
Categories
(Core :: Graphics: Canvas2D, defect)
Tracking
()
RESOLVED
WORKSFORME
People
(Reporter: nicolas, Unassigned)
Details
Attachments
(2 files, 1 obsolete file)
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.5) Gecko/20091109 Ubuntu/9.10 (karmic) Firefox/3.5.5
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.5) 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
Reporter | ||
Comment 1•16 years ago
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Reporter | ||
Comment 2•16 years ago
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Reporter | ||
Comment 3•16 years ago
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Attachment #414498 -
Attachment is obsolete: true
Reporter | ||
Comment 4•16 years ago
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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.
Reporter | ||
Comment 5•16 years ago
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Comment on attachment 414503 [details]
Test case reduced to canvas resize
This test case requires chrome privileges.
Comment 6•14 years ago
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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
Closed: 14 years ago
Resolution: --- → WORKSFORME
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Description
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