<Swing Dev> [9] Review request for JDK-8150176 [hidpi] wrong resolution variant of multi-res. image is used for TrayIcon
Alexandr Scherbatiy
alexandr.scherbatiy at oracle.com
Tue Jun 14 09:51:01 UTC 2016
On 6/13/2016 3:18 PM, Rajeev Chamyal wrote:
>
> Hello Alexandr,
>
> Thanks for the review. I have updated the webrev as per review comments.
>
> http://cr.openjdk.java.net/~rchamyal/8150176/webrev.01/
> <http://cr.openjdk.java.net/%7Erchamyal/8150176/webrev.01/>
>
> I tried drawing the image directly to paint graphics without buffered
> image and it was getting cropped.
>
Did you paint it using non scaled width and height?
g.drawImage(image, 0, 0, curW, curH, null);
Is the g transform already scaled?
XTrayIconPeer:
606 if (scaleX > 1.0 && scaleY > 1.0) {
607 resolutionVariant = ((MultiResolutionImage) image).
It is better to change the condition to "image instanceof
MultiResolutionImage". It is necessary to not get CCE for non
multi-resolution image and the multi-resolution image should return the
best resolution variant for any scale.
618 gr.drawImage(resolutionVariant, 0, 0,
619 curW, curH, observer);
The width and height should be scaled here to draw to whole buffered
image.
WTrayIconPeer:
133 BufferedImage bufImage = new
BufferedImage(TRAY_ICON_WIDTH, TRAY_ICON_HEIGHT,
134 BufferedImage.TYPE_INT_ARGB);
The size for the buffered image should be scaled in the same was as
for XTrayIconPeer.
It may require to update the native code as well to set proper
high-resolution icon.
Thanks,
Alexandr.
> Regards,
>
> Rajeev Chamyal
>
> *From:*Alexandr Scherbatiy
> *Sent:* 09 June 2016 20:43
> *To:* Rajeev Chamyal; swing-dev at openjdk.java.net; Sergey Bylokhov
> *Subject:* Re: <Swing Dev> [9] Review request for JDK-8150176 [hidpi]
> wrong resolution variant of multi-res. image is used for TrayIcon
>
> On 6/9/2016 11:55 AM, Rajeev Chamyal wrote:
>
> Hello All,
>
> Please review the following fix.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8150176
>
> Webrev: http://cr.openjdk.java.net/~rchamyal/8150176/webrev.00/
> <http://cr.openjdk.java.net/%7Erchamyal/8150176/webrev.00/>
>
> Issue: Wrong resolution variant image is used in Tray Icon.
>
> Fix : Applying the device transform to graphics object to select
> the correct image.
>
> The image could be cropped on Linux because the high resolution
> icon which size is bigger that the original image is drawn to the
> buffered image with un-scaled size curW x CurH.
> It is better to get a resolution variant from the multi-resolution
> image, draw it to a buffered image with the same scaled size and then
> draw the buffered image to the paint graphics using original size:
> -------
> Image resolutionVariant = ((MultiResolutionImage)
> image).getResolutionVariant(scaleX * curW, scaleY * curH);
> BufferedImage bufImage = new BufferedImage(scaleX * curW, scaleY *
> curH, BufferedImage.TYPE_INT_ARGB);
> // ...
> gr.drawImage(image, 0, 0, scaleX * curW, scaleY * curH, observer);
> // ...
> g.drawImage(bufImage, 0, 0, curW, curH, observer); // non scaled
> width and height
> -------
>
> By the way, is the buffered image necessary in this case? Is it
> possible to draw the image directly to the paint graphics?
> -------
> g.drawImage(image, 0, 0, curW, curH, null);
> -------
>
> Thanks,
> Alexandr.
>
> Regards,
>
> Rajeev Chamyal
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.openjdk.java.net/pipermail/swing-dev/attachments/20160614/0b6d7bc9/attachment.html>
More information about the swing-dev
mailing list