717b209147
2004-07-12 Scott Gilbertson <scottg@mantatest.com> * gnu/awt/xlib/XCanvasPeer.java (createImage): Implement. * gnu/awt/xlib/XOffScreenImage.java (XOffScreenImage): Add ImageConsumer interface. Add ColorModel constructor argument. Add constructor using ImageProducer. (getSource): Implement. (imageComplete): New method. (setColorModel): New method. (setDimensions): New method. (setHints): New method. (setPixels): New method. (setProperties): New method. * gnu/gcj/xlib/GC.java (drawPoint): New native method. * gnu/gcj/xlib/natGC.cc (drawPoint): New native method. From-SVN: r84564
281 lines
8.8 KiB
Java
281 lines
8.8 KiB
Java
/* Copyright (C) 2000, 2003 Free Software Foundation
|
|
|
|
This file is part of libgcj.
|
|
|
|
This software is copyrighted work licensed under the terms of the
|
|
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
|
|
details. */
|
|
|
|
package gnu.awt.xlib;
|
|
|
|
import java.awt.Image;
|
|
import java.awt.Graphics;
|
|
import java.awt.Graphics2D;
|
|
import java.awt.GraphicsConfiguration;
|
|
import java.awt.image.ColorModel;
|
|
import java.awt.image.ImageObserver;
|
|
import java.awt.image.ImageProducer;
|
|
import java.awt.image.ImageConsumer;
|
|
import java.util.Hashtable;
|
|
import gnu.awt.j2d.DirectRasterGraphics;
|
|
import gnu.awt.j2d.Graphics2DImpl;
|
|
import gnu.awt.j2d.IntegerGraphicsState;
|
|
import gnu.gcj.xlib.Drawable;
|
|
import gnu.gcj.xlib.Pixmap;
|
|
import gnu.gcj.xlib.Screen;
|
|
import gnu.gcj.xlib.Visual;
|
|
import gnu.gcj.xlib.GC;
|
|
|
|
/** Image class for xlib off-screen buffers.
|
|
* The image is stored in a server-side pixmap for best performance.
|
|
* This class supports getGraphics, so you can draw on the pixmap, and is
|
|
* specially handled when doing drawImage, so that the image copy is done
|
|
* entirely in the X server.
|
|
* This class does not support rasterization, for which you'd need an XImage.
|
|
*
|
|
* @author scott gilbertson <scottg@mantatest.com> <sgilbertson@cogeco.ca>
|
|
*/
|
|
public class XOffScreenImage extends Image
|
|
implements IntegerGraphicsState.ScreenCoupledImage,
|
|
ImageConsumer
|
|
{
|
|
private Pixmap pixmap;
|
|
private XGraphicsConfiguration config;
|
|
private int width;
|
|
private int height;
|
|
private Drawable drawable;
|
|
private ImageProducer prod;
|
|
private GC gc;
|
|
private ColorModel pixmapColorModel;
|
|
|
|
/** Create a new XOffScreenImage
|
|
* @param config Graphics configuration, to compare against on-screen
|
|
* components and to create the appropriate Graphics
|
|
* @param drawable The drawable with which the image is compatible
|
|
* @param width The width of the image
|
|
* @param height The height of the image
|
|
* @param cm The ColorModel associated with drawable
|
|
*/
|
|
XOffScreenImage (XGraphicsConfiguration config, Drawable drawable, int width, int height, ColorModel cm)
|
|
{
|
|
this.config = config;
|
|
this.width = width;
|
|
this.height = height;
|
|
this.drawable = drawable;
|
|
pixmapColorModel = cm;
|
|
pixmap = new Pixmap (drawable, width, height, drawable.getDepth ());
|
|
gc = GC.create (pixmap);
|
|
}
|
|
|
|
/** Create a new XOffScreenImage and obtain image data from an ImageProducer
|
|
* @param config Graphics configuration, to compare against on-screen
|
|
* components and to create the appropriate Graphics
|
|
* @param drawable The drawable with which the image is compatible
|
|
* @param prod The source of image data for this image
|
|
* @param cm The ColorModel associated with drawable
|
|
*/
|
|
XOffScreenImage (XGraphicsConfiguration config, Drawable drawable, ImageProducer prod, ColorModel cm)
|
|
{
|
|
this.config = config;
|
|
this.width = 0; // size will be overridden in a moment
|
|
this.height = 0;
|
|
this.drawable = drawable;
|
|
this.prod = prod;
|
|
pixmapColorModel = cm;
|
|
prod.startProduction (this);
|
|
}
|
|
|
|
/** Get the pixmap which contains this image
|
|
* @return The pixmap
|
|
*/
|
|
public Pixmap getPixmap ()
|
|
{
|
|
return pixmap;
|
|
}
|
|
|
|
/** Flushes (that is, destroys) any resources used for this image. This
|
|
* includes the actual image data.
|
|
*/
|
|
public void flush ()
|
|
{
|
|
// FIXME: should dispose pixmap
|
|
pixmap = null;
|
|
}
|
|
|
|
/** Returns a graphics context object for drawing an off-screen object.
|
|
* This method is only valid for off-screen objects.
|
|
*
|
|
* @return a graphics context object for an off-screen object
|
|
* @see Graphics#createImage(int, int)
|
|
*/
|
|
public Graphics getGraphics ()
|
|
{
|
|
DirectRasterGraphics gfxDevice = new XGraphics (pixmap, config);
|
|
IntegerGraphicsState igState = new IntegerGraphicsState (gfxDevice);
|
|
Graphics2DImpl gfx2d = new Graphics2DImpl (config);
|
|
gfx2d.setState (igState);
|
|
return gfx2d;
|
|
}
|
|
|
|
/** Returns the height of the image, or -1 if it is unknown. If the
|
|
* image height is unknown, the observer object will be notified when
|
|
* the value is known.
|
|
*
|
|
* @param observer the image observer for this object
|
|
* @return the height in pixels
|
|
* @see #getWidth(ImageObserver)
|
|
*/
|
|
public int getHeight (ImageObserver observer)
|
|
{
|
|
return height;
|
|
}
|
|
|
|
/** Returns the height of the image, or -1 if it is unknown. If the
|
|
* image height is unknown, the observer object will be notified when
|
|
* the value is known.
|
|
*
|
|
* @return the height in pixels
|
|
* @see #getWidth()
|
|
*/
|
|
public int getHeight ()
|
|
{
|
|
return height;
|
|
}
|
|
|
|
/** Returns the image producer object for this object. The producer is the
|
|
* object which generates pixels for this image.
|
|
*
|
|
* @return the image producer for this object
|
|
*/
|
|
public ImageProducer getSource ()
|
|
{
|
|
if (prod == null)
|
|
throw new UnsupportedOperationException ("getSource not supported");
|
|
else
|
|
return prod;
|
|
}
|
|
|
|
/** Returns the width of the image, or -1 if it is unknown. If the
|
|
* image width is unknown, the observer object will be notified when
|
|
* the value is known.
|
|
*
|
|
* @param observer the image observer for this object
|
|
* @return the width in pixels
|
|
* @see #getHeight(ImageObserver)
|
|
*/
|
|
public int getWidth (ImageObserver observer)
|
|
{
|
|
return width;
|
|
}
|
|
|
|
/** Returns the width of the image, or -1 if it is unknown. If the
|
|
* image width is unknown, the observer object will be notified when
|
|
* the value is known.
|
|
*
|
|
* @return the width in pixels
|
|
* @see #getHeight()
|
|
*/
|
|
public int getWidth ()
|
|
{
|
|
return width;
|
|
}
|
|
|
|
/** This method requests a named property for an object. The value of the
|
|
* property is returned. The value <code>UndefinedProperty</code> is
|
|
* returned if there is no property with the specified name. The value
|
|
* <code>null</code> is returned if the properties for the object are
|
|
* not yet known. In this case, the specified image observer is notified
|
|
* when the properties are known.
|
|
*
|
|
* @param name the requested property name
|
|
* @param observer the image observer for this object
|
|
* @return the named property, if available
|
|
* @see #UndefinedProperty
|
|
*/
|
|
public Object getProperty (String name, ImageObserver observer)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
/** Get the GraphicsConfiguration to which this image is coupled
|
|
* @return the GraphicsConfiguration
|
|
*/
|
|
public GraphicsConfiguration getGraphicsConfiguration ()
|
|
{
|
|
return config;
|
|
}
|
|
|
|
public void imageComplete (int status)
|
|
{
|
|
}
|
|
|
|
public void setColorModel (ColorModel model)
|
|
{
|
|
}
|
|
|
|
public void setDimensions (int width, int height)
|
|
{
|
|
this.width = width;
|
|
this.height = height;
|
|
pixmap = new Pixmap (drawable, width, height, drawable.getDepth ());
|
|
gc = GC.create (pixmap);
|
|
}
|
|
|
|
public void setHints (int flags)
|
|
{
|
|
}
|
|
|
|
public void setPixels (int x, int y, int w, int h, ColorModel model, int[] pixels, int offset, int scansize)
|
|
{
|
|
int idx = 0;
|
|
float[] normalizedComponents = new float [4];
|
|
int[] unnormalizedComponents = { 0, 0, 0, 0xff };
|
|
normalizedComponents[3] = 1;
|
|
for (int yp=y; yp < (y + h); yp++)
|
|
{
|
|
for (int xp=x; xp < (x + w); xp++)
|
|
{
|
|
int p = (yp - y) * scansize + (xp - x) + offset;
|
|
// FIXME: there HAS to be a more efficient mechanism for color mapping
|
|
normalizedComponents[0] = (float)model.getRed (pixels[p]) / 255F;
|
|
normalizedComponents[1] = (float)model.getGreen (pixels[p]) / 255F;
|
|
normalizedComponents[2] = (float)model.getBlue (pixels[p]) / 255F;
|
|
pixmapColorModel.getUnnormalizedComponents (normalizedComponents, 0,
|
|
unnormalizedComponents, 0);
|
|
int pixelColor = pixmapColorModel.getDataElement (unnormalizedComponents, 0);
|
|
gc.setForeground (pixelColor);
|
|
gc.drawPoint (xp, yp);
|
|
}
|
|
}
|
|
}
|
|
|
|
public void setPixels (int x, int y, int w, int h, ColorModel model, byte[] pixels, int offset, int scansize)
|
|
{
|
|
int idx = 0;
|
|
float[] normalizedComponents = new float [4];
|
|
int[] unnormalizedComponents = { 0, 0, 0, 0xff };
|
|
normalizedComponents[3] = 1;
|
|
for (int yp=y; yp < (y + h); yp++)
|
|
{
|
|
for (int xp=x; xp < (x + w); xp++)
|
|
{
|
|
// FIXME: there HAS to be a more efficient mechanism for color mapping
|
|
int p = (yp - y) * scansize + (xp - x) + offset;
|
|
normalizedComponents[0] = (float)model.getRed (pixels[p]) / 255F;
|
|
normalizedComponents[1] = (float)model.getGreen (pixels[p]) / 255F;
|
|
normalizedComponents[2] = (float)model.getBlue (pixels[p]) / 255F;
|
|
pixmapColorModel.getUnnormalizedComponents (normalizedComponents, 0,
|
|
unnormalizedComponents, 0);
|
|
int pixelColor = pixmapColorModel.getDataElement (unnormalizedComponents, 0);
|
|
gc.setForeground (pixelColor);
|
|
gc.drawPoint (xp, yp);
|
|
}
|
|
}
|
|
}
|
|
|
|
public void setProperties (Hashtable props)
|
|
{
|
|
}
|
|
|
|
}
|