Good point. Thanks :P I'm happy now.
Gili
On Thu, 10 Mar 2005 10:22:58 -0800, Jonathan Locke wrote:
>
>just call setWidth()/setHeight() on the resource... ?
>
>Gili wrote:
>
>> Ok that works but now I ran into another problem. The
>>RenderedDynamicImageResource construct takes width, height arguments.
>>The problem is that the user can dynamically change the size of my
>>corners which makes it (yet again) impossible for me to use
>>RenderedDynamicImageResource. Grrr! I want to use it as much as you
>>want me to use it but it's not easy :)
>>
>> Is it possible to remove this limitation and have Image read
>>the dimensions out of the returned BufferedImage?
>>
>>Gili
>>
>>On Thu, 10 Mar 2005 08:50:13 -0800, Jonathan Locke wrote:
>>
>>
>>
>>>> The fact that it is transient does not solve the problem I
>>>>mentioned. What I am saying is that if I render the exact same corner
>>>>multiple times (by hitting refresh on my browser 1000 times) then
>>>>render(Graphics2D) will get triggered 1000 times and I will have to
>>>>repaint it. What I am saying is that I know for a fact when the image
>>>>needs to be regenerated and when it should use the cached version and
>>>>RenderedDynamicImageResource does not give me the capability to do much
>>>>about it. The most I can do is g2d.drawImage(cachedImage) I guess but I
>>>>doubt it is as efficient as just giving it the BufferedImage
>>>>directly... I don't want to be cloning the image contents on every
>>>>rendering if I don't have to.
>>>>
>>>>
>>>>
>>>>
>>>sorry, but you're wrong.
>>>
>>>what is checked into HEAD /does/ solve your problem.
>>>you get one shot to render your image and then it's cached until
>>>serialized. see for yourself:
>>>
>>> private transient byte[] imageData;
>>>
>>> /**
>>> * @return The image data for this dynamic image
>>> */
>>> protected byte[] getImageData()
>>> {
>>> if (imageData == null)
>>> {
>>> final BufferedImage image = new BufferedImage(width, height,
>>>BufferedImage.TYPE_INT_RGB);
>>> render((Graphics2D)image.getGraphics());
>>> imageData = toImageData(image);
>>> }
>>> return imageData;
>>> }
>>>
>>>to support your need to refresh on-demand, i just added an invalidate()
>>>method which clears the transient imageData cache:
>>>
>>> /**
>>> * Causes the image to be redrawn the next time its requested.
>>> */
>>> public void invalidate()
>>> {
>>> imageData = null;
>>> }
>>>
>>>boy, that was a tough piece of code to write! ;-)
>>>
>>> jon
>>>
>>>
>>>
>>>>Gili
>>>>
>>>>
>>>>
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>>>>
>>>>
>>>>
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>>
>>
>>
>>
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>>
>
>
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>Read honest & candid reviews on hundreds of IT Products from real users.
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