diff options
Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/VolatileImageGraphics.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/VolatileImageGraphics.java | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/VolatileImageGraphics.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/VolatileImageGraphics.java new file mode 100644 index 000000000..b5858f905 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/VolatileImageGraphics.java @@ -0,0 +1,326 @@ +/* VolatileImageGraphics.java + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.java.awt.peer.gtk; + +import java.awt.AlphaComposite; +import java.awt.Color; +import java.awt.Composite; +import java.awt.Graphics; +import java.awt.Graphics2D; +import java.awt.GraphicsConfiguration; +import java.awt.Image; +import java.awt.Point; +import java.awt.Shape; +import java.awt.Toolkit; +import java.awt.font.GlyphVector; +import java.awt.geom.AffineTransform; +import java.awt.geom.Point2D; +import java.awt.geom.Rectangle2D; +import java.awt.image.BufferedImage; +import java.awt.image.ColorModel; +import java.awt.image.ImageObserver; +import java.awt.image.ImageProducer; +import java.awt.image.Raster; +import java.awt.image.WritableRaster; +import java.util.Hashtable; + +public class VolatileImageGraphics extends ComponentGraphics +{ + private GtkVolatileImage owner; + private BufferedImage buffer; + + public VolatileImageGraphics(GtkVolatileImage img) + { + this.owner = img; + cairo_t = initFromVolatile( owner.nativePointer ); + setup( cairo_t ); + } + + private VolatileImageGraphics(VolatileImageGraphics copy) + { + this.owner = copy.owner; + cairo_t = initFromVolatile(owner.nativePointer); + copy( copy, cairo_t ); + } + + public void copyAreaImpl(int x, int y, int width, int height, int dx, int dy) + { + owner.copyArea(x, y, width, height, dx, dy); + } + + public GraphicsConfiguration getDeviceConfiguration() + { + GraphicsConfiguration conf; + if (owner.component != null) + { + conf = owner.component.getGraphicsConfiguration(); + } + else + { + return java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment() + .getDefaultScreenDevice().getDefaultConfiguration(); + } + return conf; + } + + public Graphics create() + { + return new VolatileImageGraphics( this ); + } + + public void draw(Shape s) + { + if (comp == null || comp instanceof AlphaComposite) + super.draw(s); + + // Custom composite + else + { + // Draw operation to temporary buffer + createBuffer(); + + Graphics2D g2d = (Graphics2D)buffer.getGraphics(); + g2d.setColor(this.getColor()); + g2d.setStroke(this.getStroke()); + g2d.draw(s); + + drawComposite(s.getBounds2D(), null); + } + } + + public void fill(Shape s) + { + if (comp == null || comp instanceof AlphaComposite) + super.fill(s); + + // Custom composite + else + { + // Draw operation to temporary buffer + createBuffer(); + + Graphics2D g2d = (Graphics2D)buffer.getGraphics(); + g2d.setPaint(this.getPaint()); + g2d.setColor(this.getColor()); + g2d.fill(s); + + drawComposite(s.getBounds2D(), null); + } + } + + public void drawGlyphVector(GlyphVector gv, float x, float y) + { + if (comp == null || comp instanceof AlphaComposite) + super.drawGlyphVector(gv, x, y); + + // Custom composite + else + { + // Draw operation to temporary buffer + createBuffer(); + + Graphics2D g2d = (Graphics2D)buffer.getGraphics(); + + g2d.setPaint(this.getPaint()); + g2d.setColor(this.getColor()); + g2d.drawGlyphVector(gv, x, y); + + Rectangle2D bounds = gv.getLogicalBounds(); + bounds = new Rectangle2D.Double(x + bounds.getX(), y + bounds.getY(), + bounds.getWidth(), bounds.getHeight()); + drawComposite(bounds, null); + } + } + + protected boolean drawImage(Image img, AffineTransform xform, + Color bgcolor, ImageObserver obs) + { + if (comp == null || comp instanceof AlphaComposite) + return super.drawImage(img, xform, bgcolor, obs); + + // Custom composite + else + { + // Get buffered image of source + if( !(img instanceof BufferedImage) ) + { + ImageProducer source = img.getSource(); + if (source == null) + return false; + img = Toolkit.getDefaultToolkit().createImage(source); + } + BufferedImage bImg = (BufferedImage) img; + + // Find dimensions of translation + Point2D origin = new Point2D.Double(bImg.getMinX(), bImg.getMinY()); + Point2D pt = new Point2D.Double(bImg.getWidth(), bImg.getHeight()); + if (xform != null) + { + origin = xform.transform(origin, origin); + pt = xform.transform(pt, pt); + } + + // Create buffer and draw image + createBuffer(); + + Graphics2D g2d = (Graphics2D)buffer.getGraphics(); + g2d.setRenderingHints(this.getRenderingHints()); + g2d.drawImage(img, xform, obs); + + // Perform compositing from buffer to screen + return drawComposite(new Rectangle2D.Double((int)origin.getX(), + (int)origin.getY(), + (int)pt.getX(), + (int)pt.getY()), + obs); + } + } + + public boolean drawImage(Image img, int x, int y, ImageObserver observer) + { + if (img instanceof GtkVolatileImage + && (comp == null || comp instanceof AlphaComposite)) + { + owner.drawVolatile( ((GtkVolatileImage)img).nativePointer, + x, y, + ((GtkVolatileImage)img).width, + ((GtkVolatileImage)img).height ); + return true; + } + return super.drawImage( img, x, y, observer ); + } + + public boolean drawImage(Image img, int x, int y, int width, int height, + ImageObserver observer) + { + if ((img instanceof GtkVolatileImage) + && (comp == null || comp instanceof AlphaComposite)) + { + owner.drawVolatile( ((GtkVolatileImage)img).nativePointer, + x, y, width, height ); + return true; + } + return super.drawImage( img, x, y, width, height, observer ); + } + + protected Rectangle2D getRealBounds() + { + return new Rectangle2D.Double(0, 0, owner.width, owner.height); + } + + private boolean drawComposite(Rectangle2D bounds, ImageObserver observer) + { + // Clip source to visible areas that need updating + Rectangle2D clip = this.getClipBounds(); + Rectangle2D.intersect(bounds, clip, bounds); + + BufferedImage buffer2 = buffer; + if (!bounds.equals(buffer2.getRaster().getBounds())) + buffer2 = buffer2.getSubimage((int)bounds.getX(), (int)bounds.getY(), + (int)bounds.getWidth(), + (int)bounds.getHeight()); + + // Get current on-screen pixels (destination) and clip to bounds + BufferedImage current = owner.getSnapshot(); + + double[] points = new double[] {bounds.getX(), bounds.getY(), + bounds.getMaxX(), bounds.getMaxY()}; + transform.transform(points, 0, points, 0, 2); + + Rectangle2D deviceBounds = new Rectangle2D.Double(points[0], points[1], + points[2] - points[0], + points[3] - points[1]); + Rectangle2D.intersect(deviceBounds, this.getClipInDevSpace(), deviceBounds); + + current = current.getSubimage((int)deviceBounds.getX(), + (int)deviceBounds.getY(), + (int)deviceBounds.getWidth(), + (int)deviceBounds.getHeight()); + + // Perform actual composite operation + compCtx.compose(buffer2.getRaster(), current.getRaster(), + buffer2.getRaster()); + + // This MUST call directly into the "action" method in CairoGraphics2D, + // not one of the wrappers, to ensure that the composite isn't processed + // more than once! + Composite oldComp = comp; // so that ComponentGraphics doesn't + comp = null; // process the composite again + boolean rv = super.drawImage(buffer2, + AffineTransform.getTranslateInstance(bounds.getX(), + bounds.getY()), + null, null); + comp = oldComp; + + return rv; + } + + private void createBuffer() + { + if (buffer == null) + { + WritableRaster rst; + rst = Raster.createWritableRaster(GtkVolatileImage.createGdkSampleModel(owner.width, + owner.height), + new Point(0,0)); + + buffer = new BufferedImage(GtkVolatileImage.gdkColorModel, rst, + GtkVolatileImage.gdkColorModel.isAlphaPremultiplied(), + new Hashtable()); + } + else + { + Graphics2D g2d = ((Graphics2D)buffer.getGraphics()); + + g2d.setBackground(new Color(0,0,0,0)); + g2d.clearRect(0, 0, buffer.getWidth(), buffer.getHeight()); + } + } + + protected ColorModel getNativeCM() + { + // We should really return GtkVolatileImage.gdkColorModel , + // but CairoGraphics2D doesn't handle alpha premultiplication properly (see + // the fixme in drawImage) so we use the naive Cairo model instead to trick + // the compositing context. + // Because getNativeCM() == getBufferCM() for this peer, it doesn't break. + return CairoSurface.cairoCM_pre; + } +} + |