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Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/CairoSurfaceGraphics.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/CairoSurfaceGraphics.java | 355 |
1 files changed, 355 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/CairoSurfaceGraphics.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/CairoSurfaceGraphics.java new file mode 100644 index 000000000..35b015f32 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/CairoSurfaceGraphics.java @@ -0,0 +1,355 @@ +/* CairoSurfaceGraphics.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.GraphicsEnvironment; +import java.awt.Image; +import java.awt.Rectangle; +import java.awt.Shape; +import java.awt.Toolkit; +import java.awt.font.GlyphVector; +import java.awt.geom.AffineTransform; +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.RenderedImage; +import java.util.Hashtable; + +/** + * Implementation of Graphics2D on a Cairo surface. + */ +public class CairoSurfaceGraphics extends CairoGraphics2D +{ + protected CairoSurface surface; + private BufferedImage buffer; + private long cairo_t; + + /** + * Create a graphics context from a cairo surface + */ + public CairoSurfaceGraphics(CairoSurface surface) + { + this.surface = surface; + cairo_t = surface.newCairoContext(); + setup( cairo_t ); + setClip(0, 0, surface.width, surface.height); + } + + /** + * Creates another context from a surface. + * Used by create(). + */ + private CairoSurfaceGraphics(CairoSurfaceGraphics copyFrom) + { + surface = copyFrom.surface; + cairo_t = surface.newCairoContext(); + copy( copyFrom, cairo_t ); + } + + public Graphics create() + { + return new CairoSurfaceGraphics(this); + } + + public GraphicsConfiguration getDeviceConfiguration() + { + return GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getDefaultConfiguration(); + } + + protected Rectangle2D getRealBounds() + { + return new Rectangle2D.Double(0.0, 0.0, surface.width, surface.height); + } + + public void copyAreaImpl(int x, int y, int width, int height, int dx, int dy) + { + surface.copyAreaNative(x, y, width, height, dx, dy, surface.width); + } + + /** + * Overloaded methods that do actual drawing need to account for custom + * composites + */ + public void draw(Shape s) + { + if (!surface.sharedBuffer) + surface.syncJavaToNative(surface.surfacePointer, surface.getData()); + + // Find total bounds of shape + Rectangle r = findStrokedBounds(s); + if (shiftDrawCalls) + { + r.width++; + r.height++; + } + + // Do the drawing + if (comp == null || comp instanceof AlphaComposite) + super.draw(s); + + else + { + createBuffer(); + + Graphics2D g2d = (Graphics2D)buffer.getGraphics(); + g2d.setStroke(this.getStroke()); + g2d.setColor(this.getColor()); + g2d.setTransform(transform); + g2d.draw(s); + + drawComposite(r.getBounds2D(), null); + } + + if (!surface.sharedBuffer) + surface.syncNativeToJava(surface.surfacePointer, surface.getData()); + } + + public void fill(Shape s) + { + if (!surface.sharedBuffer) + surface.syncJavaToNative(surface.surfacePointer, surface.getData()); + + if (comp == null || comp instanceof AlphaComposite) + super.fill(s); + + else + { + createBuffer(); + + Graphics2D g2d = (Graphics2D)buffer.getGraphics(); + g2d.setPaint(this.getPaint()); + g2d.setColor(this.getColor()); + g2d.setTransform(transform); + g2d.fill(s); + + drawComposite(s.getBounds2D(), null); + } + + if (!surface.sharedBuffer) + surface.syncNativeToJava(surface.surfacePointer, surface.getData()); + } + + public void drawRenderedImage(RenderedImage image, AffineTransform xform) + { + if (!surface.sharedBuffer) + surface.syncJavaToNative(surface.surfacePointer, surface.getData()); + + if (comp == null || comp instanceof AlphaComposite) + super.drawRenderedImage(image, xform); + + else + { + createBuffer(); + + Graphics2D g2d = (Graphics2D)buffer.getGraphics(); + g2d.setRenderingHints(this.getRenderingHints()); + g2d.setTransform(transform); + g2d.drawRenderedImage(image, xform); + + drawComposite(buffer.getRaster().getBounds(), null); + } + + if (!surface.sharedBuffer) + surface.syncNativeToJava(surface.surfacePointer, surface.getData()); + } + + protected boolean drawImage(Image img, AffineTransform xform, + Color bgcolor, ImageObserver obs) + { + if (!surface.sharedBuffer) + surface.syncJavaToNative(surface.surfacePointer, surface.getData()); + + boolean ret; + if (comp == null || comp instanceof AlphaComposite) + ret = super.drawImage(img, xform, bgcolor, obs); + + 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 translated bounds + Rectangle2D bounds = new Rectangle(bImg.getMinX(), bImg.getMinY(), + bImg.getWidth(), bImg.getHeight()); + if (xform != null) + bounds = getTransformedBounds(bounds, xform); + + // Create buffer and draw image + createBuffer(); + + Graphics2D g2d = (Graphics2D)buffer.getGraphics(); + g2d.setRenderingHints(this.getRenderingHints()); + g2d.drawImage(img, xform, obs); + + // Perform compositing + ret = drawComposite(bounds, obs); + } + + if (!surface.sharedBuffer) + surface.syncNativeToJava(surface.surfacePointer, surface.getData()); + + return ret; + } + + public void drawGlyphVector(GlyphVector gv, float x, float y) + { + if (!surface.sharedBuffer) + surface.syncJavaToNative(surface.surfacePointer, surface.getData()); + + if (comp == null || comp instanceof AlphaComposite) + super.drawGlyphVector(gv, x, y); + + else + { + createBuffer(); + + Graphics2D g2d = (Graphics2D)buffer.getGraphics(); + g2d.setPaint(this.getPaint()); + g2d.setStroke(this.getStroke()); + 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); + } + + if (!surface.sharedBuffer) + surface.syncNativeToJava(surface.surfacePointer, surface.getData()); + } + + private boolean drawComposite(Rectangle2D bounds, ImageObserver observer) + { + // Find bounds in device space + bounds = getTransformedBounds(bounds, transform); + + // Clip bounds by the stored clip, and by the internal buffer + Rectangle2D devClip = this.getClipInDevSpace(); + Rectangle2D.intersect(bounds, devClip, bounds); + devClip = new Rectangle(buffer.getMinX(), buffer.getMinY(), + buffer.getWidth(), buffer.getHeight()); + Rectangle2D.intersect(bounds, devClip, bounds); + + // Round bounds as needed, but be careful in our rounding + // (otherwise it may leave unpainted stripes) + double x = bounds.getX(); + double y = bounds.getY(); + double maxX = x + bounds.getWidth(); + double maxY = y + bounds.getHeight(); + x = Math.round(x); + y = Math.round(y); + bounds.setRect(x, y, Math.round(maxX - x), Math.round(maxY - y)); + + // Find subimage of internal buffer for updating + BufferedImage buffer2 = buffer; + if (!bounds.equals(buffer2.getRaster().getBounds())) + buffer2 = buffer2.getSubimage((int)bounds.getX(), (int)bounds.getY(), + (int)bounds.getWidth(), + (int)bounds.getHeight()); + + // Find subimage of main image for updating + BufferedImage current = CairoSurface.getBufferedImage(surface); + current = current.getSubimage((int)bounds.getX(), (int)bounds.getY(), + (int)bounds.getWidth(), + (int)bounds.getHeight()); + + // Perform actual composite operation + compCtx.compose(buffer2.getRaster(), current.getRaster(), + buffer2.getRaster()); + + // Set cairo's composite to direct SRC, since we've already done our own + // compositing + Composite oldcomp = comp; + setComposite(AlphaComposite.Src); + + // 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! + boolean rv = super.drawImage(buffer2, + AffineTransform.getTranslateInstance(bounds.getX(), + bounds.getY()), + null, null); + setComposite(oldcomp); + updateColor(); + return rv; + } + + private void createBuffer() + { + if (buffer == null) + { + buffer = new BufferedImage(getBufferCM(), + surface.createCompatibleWritableRaster(), + getBufferCM().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() + { + return CairoSurface.cairoCM_pre; + } + + protected ColorModel getBufferCM() + { + return CairoSurface.cairoColorModel; + } +} |