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Screenshots of unit tests:
<http://jogamp.org/files/screenshots/printing/test01-awt/>
Unit test producing the results:
Base Test Class:
<http://jogamp.org/git/?p=jogl.git;a=blob;f=src/test/com/jogamp/opengl/test/junit/jogl/tile/TiledPrintingAWTBase.java;hb=HEAD>
AWT:
<http://jogamp.org/git/?p=jogl.git;a=blob;f=src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingGearsAWT.java;hb=HEAD>
Swing:
<http://jogamp.org/git/?p=jogl.git;a=blob;f=src/test/com/jogamp/opengl/test/junit/jogl/tile/TestTiledPrintingGearsSwingAWT.java;hb=HEAD>
Print code:
AWTPrintLifecycle:
<http://jogamp.org/git/?p=jogl.git;a=blob;f=src/nativewindow/classes/com/jogamp/nativewindow/awt/AWTPrintLifecycle.java;hb=HEAD>
GLCanvas:
<http://jogamp.org/git/?p=jogl.git;a=blob;f=src/jogl/classes/com/jogamp/opengl/awt/GLCanvas.java;hb=HEAD#l731>
...
AWTTilePainter (common code):
<http://jogamp.org/git/?p=jogl.git;a=blob;f=src/jogl/classes/jogamp/opengl/awt/AWTTilePainter.java;hb=HEAD>
+++
Enhance lifecycle for AWT printing via AWTPrintLifecycle:
We fit the frame into the imageable area with for 72 dpi,
assuming that is the default AWT painting density.
The frame borders are considered.
The frame's scale factor 'scaleComp72' is used for the graphics print matrix
of the overall print-job, hence no frame resize is required.
The GL scale factor 'scaleGLMatXY', 72dpi/glDPI, is passed to the GL object
which locally scales the print matrix and renders the scene with 1/scaleGLMatXY pixels.
Before printing, we setup the GLCanvas, ..:
- move GLContext and GLEventListener -> offscreen
- offscreen is of tile-size
this is performed w/ AWTPrintLifecycle.setupPrint(..).
Impl. in GLCanvas, etc.
After printing, AWTPrintLifecycle.releasePrint() shall be called. Impl. in GLCanvas .. etc.
To perform AWTPrintLifecycle on all components in one container decorating PrinterJob.job(),
one may use:
Container cont;
double scaleGLMatXY = 72.0/glDPI;
int numSamples = 0; // leave multisampling as-is
PrinterJob job;
...
final AWTPrintLifecycle.Context ctx = AWTPrintLifecycle.Context.setupPrint(cont, scaleGLMatXY, scaleGLMatXY, numSamples);
try {
AWTEDTExecutor.singleton.invoke(true, new Runnable() {
public void run() {
try {
job.print();
} catch (PrinterException ex) {
ex.printStackTrace();
}
} });
} finally {
ctx.releasePrint();
}
+++
Tiled rendering is used, i.e. at print(Graphics g),
the clip bounds is used to setup the TiledRenderer's
image size and the impl. renders all tiles.
For the tiled reshape, a user component,
i.e. GLEventListener reshape(x, y, width, height),
needs to know about the current tile's position and image size.
The tile size itself is passed as width and height
as this is being used to set the current viewport.
Hence the GLEventListener shall implement the
TileRendererBase.TileRendererNotify interface!
+++
Bugs:
- None in results
- GLCanvas: Workaround Bug 830 where onscreen MSAA cannot switch to offscreen FBO,
i.e. stay 'onscreen'
+++
OSX local 'virtual' printer installation,
i.e. print-to-file printer using cups:
cupsctl FileDevice=Yes
killall -HUP cupsd
mkdir /data/lp
chown jogamp /data/lp
chmod ugo+rwx /data/lp
lpadmin -p lprint -E -v file:/data/lp/out.ps -P /Library/Printers/PPDs/Contents/Resources/HP\ LaserJet\ 4\ Plus.gz
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