<AWT Dev> RFR: 7183828: Invalid Image Variant when using anything other than BufferedImage
prr at openjdk.java.net
Wed Sep 9 16:52:43 UTC 2020
On Tue, 8 Sep 2020 21:16:10 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:
> It is intended that our draw machinery works only on specific image formats that we know we support.
> But the user still able to create some image subclasses for their purpose and according to our spec of
> Graphics2D.drawImage() we should not throw any exceptions.
> I suggest handling this situation in a similar way as we handle some errors during rendering when
> the pipeline is in the wrong state, or the ToolkitImage is not loaded yet, just ignore the request and
> return false.
> All our pipelines have a special meaning of InvalidPipeException, if the pipeline found that it cannot complete the draw
> operation throws this exception which is handled by all methods in the SunGraphics2D class.
> So as a fix I suggest changing the IllegalArgumentException to the InvalidPipeException.
> Also, we need to add a try/catch block to the drawHiDPIImage(it uses the SurfaceManager.getManager method directly)
> Old review request:
I have very mixed feelings about this whole idea.
InvalidPipeException is being co-opted for a different purpose.
The user no longer gets a clear message that their image type isn't supported.
Is there any specification we can point to ?
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