Get the canvas/screen of an object as a bitmap graphics? Help with post processing filter!

Let's say I want to create an effect of post-processing, such as changing the pixels of the screen in a color a little more red (AFTER this drawing), or do a screen wavey distortion.

I thought that my layout as follows:

final class MyPaintScreen extends FullScreen{
    //
    //... stuff here
    //
    public void paint(Graphics g){
        //all kinds of draw commands here, then
        //the post processing method is called
        PostProcesser.modify(g);
    }

}
final class PostProcesser{
    final static void modify(Graphics g){
        //here lies the problem.
    }
}

Ideally, the modify method would use the Graphics object as a parameter, and it would get her a bitmap or an array of bytes/int with the data drawn. Then she do all that the pixel values and then crush them to the Graphics object. Or maybe it would do all this without copying it in a bitmap/picture and just edit a graphic field directly.

I thought that it would be a way to get an article / a region which was drawn (I want my post method only affect an area of the screen), but there is no method to return the screen stretched somehow, it seems. There is no Bitmap field in class Graphics to mess with. No table with the pixel values. No getBitmap/getRegion method.

After thinking long and hard, I thought to use a sort of buffer to the screen. Have a Bitmap of the size of the screen and instead draw things on the screen, draw them on the Bitmap object, and then apply the post treatment methods he and then draws the Bitmap over together on the Graphics object... but it seems so memory intensive. Moreover, I have to use the thingies setARGB awful and messy the bitmap instead of the methods of the Graphics class Drawing.

Any advice on that? Comments? Help? Suggestions?

Just to confirm the approach of the buffer, you can create a bitmap image in the desired size, create a Graphics using the bitmap object, and then you can call 'paint' provide your own Bitmap, rather than the image of the screen image.

You can also get it current graph of the screen using . getGraphics().

Not sure this helps. Good luck.

Tags: BlackBerry Developers

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I'm trying to get the active screen of the BlackBerry application, for example the home menu.

I tried to use the screen ActiveScreen = getUiEngine () .getActiveScreen () in my code, but found error during execution.

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Regarding your second question

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For example, to call app2. ButtonField.click () or something. »

It is in fact just an extension to your first question. The difference is that you will find the UiApplication associated if both applications are on good terms, in fact you can "spend" the UiApplication via a Global event. Once you have the UiApplication, you can use

.invokeLater (...)

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-------------------------------------------------------------------------

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Look at the sites of the manufacturer for drivers - and the manufacturer of the device manually.
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How to install a device driver in Vista Device Manager
http://www.Vistax64.com/tutorials/193584-Device-Manager-install-driver.html

How to disable automatic driver Installation in Windows Vista - drivers
http://www.AddictiveTips.com/Windows-Tips/how-to-disable-automatic-driver-installation-in-Windows-Vista/
http://TechNet.Microsoft.com/en-us/library/cc730606 (WS.10) .aspx

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How to fix BlueScreen (STOP) errors that cause Windows Vista to shut down or restart unexpectedly
http://support.Microsoft.com/kb/958233

Troubleshooting, STOP error blue screen Vista
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Understanding and decoding BSOD (blue screen of death) Messages
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Windows - troubleshooting blue screen errors
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In some cases, it may be necessary.

The Options or Vista recovery disk Startup Repair

How to do a startup repair
http://www.Vistax64.com/tutorials/91467-startup-repair.html

This tells you how to access the System Recovery Options and/or a Vista DVD
http://windowshelp.Microsoft.com/Windows/en-us/help/326b756b-1601-435e-99D0-1585439470351033.mspx

I hope this helps.
Rob - bicycle - Mark Twain said it is good.

Get the canvas/screen of an object as a bitmap graphics? Help with post processing filter!

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