<AWT Dev> [9] Review request for 8031573 [macosx] Checkmarks of JCheckBoxMenuItems aren't rendered in high resolution on Retina

Sergey Bylokhov Sergey.Bylokhov at oracle.com
Fri Feb 14 03:16:57 PST 2014

On 2/14/14 2:32 PM, Alexander Scherbatiy wrote:
> On 2/14/2014 2:12 AM, Sergey Bylokhov wrote:
>> Hi, Alexander.
>> Did you check option of loading of the picture on demand?Since most 
>> of the time x2 version is useless on non hdpi and vice versa.
Yes but in this particular case menu items will be painted in one 
particular scale only.
> It's not quite true.
>     MacOSX choses a necessary image representation based on the 
> current transformations. Setting current transformation to scale 2x leads
>     that the high resolution image is drawn even on non HiDPI display.
>     There is a similar mechanism for the MultiResolution toolkit 
> images. The base image is drawn in case if the high-resolution image 
> has not been loaded yet.
>     It has an issue that if there is no one more repaint event the 
> image with high resolution is not shown.
>    I would suggest to move this topic to a separate issue.
>   Thanks,
>   Alexandr.
>> On 13.02.2014 18:04, Alexander Scherbatiy wrote:
>>> Hello,
>>> Could you review the fix:
>>>   bug: https://bugs.openjdk.java.net/browse/JDK-8031573
>>>   webrev: http://cr.openjdk.java.net/~alexsch/8031573/webrev.00
>>>   The NSMenu* system icons are templates and do not have image 
>>> representations.
>>>   The fix retrieves images with original and double size from an 
>>> NSImage and put them to a MultiResolution image.
>>>   The fix also adds sun.awt.image.MultiResolutionBufferedImage class 
>>> which can be used uniformly for a Multiresolution image creation.
>>>   The fix is independent of the fix 8033534 Get MultiResolution 
>>> image from native system
>>> http://mail.openjdk.java.net/pipermail/awt-dev/2014-February/006991.html 
>>>   because CImage.createImageFromName(imageName) never returns a 
>>> MultiResolution image for templates.
>>>   But the fix 8033534 can be updated to use the 
>>> MultiResolutionBufferedImage.
>>> Thanks,
>>> Alexandr.

Best regards, Sergey.

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