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602 lines
20 KiB
Java
602 lines
20 KiB
Java
/*
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* Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.java2d.pipe;
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import java.awt.BasicStroke;
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import java.awt.Polygon;
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import java.awt.Shape;
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import java.awt.geom.AffineTransform;
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import java.awt.geom.Arc2D;
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import java.awt.geom.Ellipse2D;
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import java.awt.geom.Path2D;
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import java.awt.geom.IllegalPathStateException;
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import java.awt.geom.PathIterator;
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import java.awt.geom.Rectangle2D;
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import java.awt.geom.RoundRectangle2D;
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import sun.java2d.SunGraphics2D;
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import sun.java2d.loops.ProcessPath;
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import static sun.java2d.pipe.BufferedOpCodes.*;
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/**
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* Base class for enqueuing rendering operations in a single-threaded
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* rendering environment. Instead of each operation being rendered
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* immediately by the underlying graphics library, the operation will be
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* added to the provided RenderQueue, which will be processed at a later
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* time by a single thread.
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*
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* This class provides implementations of drawLine(), drawRect(), drawPoly(),
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* fillRect(), draw(Shape), and fill(Shape), which are useful for a
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* hardware-accelerated renderer. The other draw*() and fill*() methods
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* simply delegate to draw(Shape) and fill(Shape), respectively.
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*/
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public abstract class BufferedRenderPipe
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implements PixelDrawPipe, PixelFillPipe, ShapeDrawPipe, ParallelogramPipe
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{
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ParallelogramPipe aapgrampipe = new AAParallelogramPipe();
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static final int BYTES_PER_POLY_POINT = 8;
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static final int BYTES_PER_SCANLINE = 12;
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static final int BYTES_PER_SPAN = 16;
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protected RenderQueue rq;
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protected RenderBuffer buf;
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private BufferedDrawHandler drawHandler;
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public BufferedRenderPipe(RenderQueue rq) {
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this.rq = rq;
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this.buf = rq.getBuffer();
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this.drawHandler = new BufferedDrawHandler();
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}
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public ParallelogramPipe getAAParallelogramPipe() {
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return aapgrampipe;
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}
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/**
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* Validates the state in the provided SunGraphics2D object and sets up
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* any special resources for this operation (e.g. enabling gradient
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* shading).
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*/
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protected abstract void validateContext(SunGraphics2D sg2d);
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protected abstract void validateContextAA(SunGraphics2D sg2d);
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public void drawLine(SunGraphics2D sg2d,
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int x1, int y1, int x2, int y2)
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{
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int transx = sg2d.transX;
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int transy = sg2d.transY;
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rq.lock();
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try {
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validateContext(sg2d);
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rq.ensureCapacity(20);
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buf.putInt(DRAW_LINE);
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buf.putInt(x1 + transx);
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buf.putInt(y1 + transy);
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buf.putInt(x2 + transx);
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buf.putInt(y2 + transy);
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} finally {
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rq.unlock();
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}
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}
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public void drawRect(SunGraphics2D sg2d,
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int x, int y, int width, int height)
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{
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rq.lock();
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try {
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validateContext(sg2d);
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rq.ensureCapacity(20);
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buf.putInt(DRAW_RECT);
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buf.putInt(x + sg2d.transX);
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buf.putInt(y + sg2d.transY);
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buf.putInt(width);
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buf.putInt(height);
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} finally {
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rq.unlock();
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}
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}
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public void fillRect(SunGraphics2D sg2d,
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int x, int y, int width, int height)
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{
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rq.lock();
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try {
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validateContext(sg2d);
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rq.ensureCapacity(20);
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buf.putInt(FILL_RECT);
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buf.putInt(x + sg2d.transX);
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buf.putInt(y + sg2d.transY);
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buf.putInt(width);
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buf.putInt(height);
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} finally {
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rq.unlock();
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}
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}
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public void drawRoundRect(SunGraphics2D sg2d,
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int x, int y, int width, int height,
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int arcWidth, int arcHeight)
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{
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draw(sg2d, new RoundRectangle2D.Float(x, y, width, height,
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arcWidth, arcHeight));
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}
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public void fillRoundRect(SunGraphics2D sg2d,
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int x, int y, int width, int height,
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int arcWidth, int arcHeight)
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{
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fill(sg2d, new RoundRectangle2D.Float(x, y, width, height,
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arcWidth, arcHeight));
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}
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public void drawOval(SunGraphics2D sg2d,
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int x, int y, int width, int height)
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{
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draw(sg2d, new Ellipse2D.Float(x, y, width, height));
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}
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public void fillOval(SunGraphics2D sg2d,
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int x, int y, int width, int height)
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{
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fill(sg2d, new Ellipse2D.Float(x, y, width, height));
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}
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public void drawArc(SunGraphics2D sg2d,
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int x, int y, int width, int height,
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int startAngle, int arcAngle)
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{
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draw(sg2d, new Arc2D.Float(x, y, width, height,
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startAngle, arcAngle,
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Arc2D.OPEN));
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}
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public void fillArc(SunGraphics2D sg2d,
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int x, int y, int width, int height,
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int startAngle, int arcAngle)
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{
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fill(sg2d, new Arc2D.Float(x, y, width, height,
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startAngle, arcAngle,
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Arc2D.PIE));
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}
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protected void drawPoly(final SunGraphics2D sg2d,
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final int[] xPoints, final int[] yPoints,
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final int nPoints, final boolean isClosed)
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{
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if (xPoints == null || yPoints == null) {
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throw new NullPointerException("coordinate array");
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}
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if (xPoints.length < nPoints || yPoints.length < nPoints) {
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throw new ArrayIndexOutOfBoundsException("coordinate array");
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}
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if (nPoints < 2) {
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// render nothing
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return;
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} else if (nPoints == 2 && !isClosed) {
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// render a simple line
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drawLine(sg2d, xPoints[0], yPoints[0], xPoints[1], yPoints[1]);
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return;
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}
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rq.lock();
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try {
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validateContext(sg2d);
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int pointBytesRequired = nPoints * BYTES_PER_POLY_POINT;
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int totalBytesRequired = 20 + pointBytesRequired;
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if (totalBytesRequired <= buf.capacity()) {
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if (totalBytesRequired > buf.remaining()) {
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// process the queue first and then enqueue the points
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rq.flushNow();
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}
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buf.putInt(DRAW_POLY);
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// enqueue parameters
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buf.putInt(nPoints);
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buf.putInt(isClosed ? 1 : 0);
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buf.putInt(sg2d.transX);
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buf.putInt(sg2d.transY);
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// enqueue the points
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buf.put(xPoints, 0, nPoints);
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buf.put(yPoints, 0, nPoints);
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} else {
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// queue is too small to accommodate all points; perform the
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// operation directly on the queue flushing thread
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rq.flushAndInvokeNow(new Runnable() {
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public void run() {
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drawPoly(xPoints, yPoints,
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nPoints, isClosed,
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sg2d.transX, sg2d.transY);
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}
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});
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}
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} finally {
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rq.unlock();
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}
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}
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protected abstract void drawPoly(int[] xPoints, int[] yPoints,
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int nPoints, boolean isClosed,
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int transX, int transY);
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public void drawPolyline(SunGraphics2D sg2d,
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int[] xPoints, int[] yPoints,
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int nPoints)
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{
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drawPoly(sg2d, xPoints, yPoints, nPoints, false);
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}
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public void drawPolygon(SunGraphics2D sg2d,
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int[] xPoints, int[] yPoints,
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int nPoints)
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{
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drawPoly(sg2d, xPoints, yPoints, nPoints, true);
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}
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public void fillPolygon(SunGraphics2D sg2d,
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int[] xPoints, int[] yPoints,
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int nPoints)
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{
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fill(sg2d, new Polygon(xPoints, yPoints, nPoints));
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}
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private class BufferedDrawHandler
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extends ProcessPath.DrawHandler
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{
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BufferedDrawHandler() {
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// these are bogus values; the caller will use validate()
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// to ensure that they are set properly prior to each usage
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super(0, 0, 0, 0);
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}
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/**
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* This method needs to be called prior to each draw/fillPath()
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* operation to ensure the clip bounds are up to date.
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*/
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void validate(SunGraphics2D sg2d) {
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Region clip = sg2d.getCompClip();
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setBounds(clip.getLoX(), clip.getLoY(),
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clip.getHiX(), clip.getHiY(),
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sg2d.strokeHint);
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}
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/**
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* drawPath() support...
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*/
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public void drawLine(int x1, int y1, int x2, int y2) {
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// assert rq.lock.isHeldByCurrentThread();
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rq.ensureCapacity(20);
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buf.putInt(DRAW_LINE);
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buf.putInt(x1);
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buf.putInt(y1);
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buf.putInt(x2);
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buf.putInt(y2);
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}
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public void drawPixel(int x, int y) {
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// assert rq.lock.isHeldByCurrentThread();
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rq.ensureCapacity(12);
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buf.putInt(DRAW_PIXEL);
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buf.putInt(x);
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buf.putInt(y);
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}
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/**
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* fillPath() support...
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*/
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private int scanlineCount;
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private int scanlineCountIndex;
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private int remainingScanlines;
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private void resetFillPath() {
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buf.putInt(DRAW_SCANLINES);
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scanlineCountIndex = buf.position();
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buf.putInt(0);
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scanlineCount = 0;
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remainingScanlines = buf.remaining() / BYTES_PER_SCANLINE;
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}
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private void updateScanlineCount() {
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buf.putInt(scanlineCountIndex, scanlineCount);
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}
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/**
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* Called from fillPath() to indicate that we are about to
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* start issuing drawScanline() calls.
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*/
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public void startFillPath() {
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rq.ensureCapacity(20); // to ensure room for at least a scanline
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resetFillPath();
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}
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public void drawScanline(int x1, int x2, int y) {
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if (remainingScanlines == 0) {
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updateScanlineCount();
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rq.flushNow();
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resetFillPath();
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}
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buf.putInt(x1);
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buf.putInt(x2);
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buf.putInt(y);
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scanlineCount++;
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remainingScanlines--;
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}
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/**
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* Called from fillPath() to indicate that we are done
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* issuing drawScanline() calls.
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*/
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public void endFillPath() {
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updateScanlineCount();
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}
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}
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protected void drawPath(SunGraphics2D sg2d,
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Path2D.Float p2df, int transx, int transy)
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{
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rq.lock();
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try {
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validateContext(sg2d);
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drawHandler.validate(sg2d);
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ProcessPath.drawPath(drawHandler, p2df, transx, transy);
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} finally {
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rq.unlock();
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}
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}
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protected void fillPath(SunGraphics2D sg2d,
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Path2D.Float p2df, int transx, int transy)
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{
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rq.lock();
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try {
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validateContext(sg2d);
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drawHandler.validate(sg2d);
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drawHandler.startFillPath();
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ProcessPath.fillPath(drawHandler, p2df, transx, transy);
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drawHandler.endFillPath();
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} finally {
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rq.unlock();
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}
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}
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private native int fillSpans(RenderQueue rq, long buf,
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int pos, int limit,
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SpanIterator si, long iterator,
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int transx, int transy);
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protected void fillSpans(SunGraphics2D sg2d, SpanIterator si,
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int transx, int transy)
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{
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rq.lock();
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try {
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validateContext(sg2d);
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rq.ensureCapacity(24); // so that we have room for at least a span
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int newpos = fillSpans(rq, buf.getAddress(),
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buf.position(), buf.capacity(),
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si, si.getNativeIterator(),
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transx, transy);
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buf.position(newpos);
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} finally {
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rq.unlock();
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}
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}
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public void fillParallelogram(SunGraphics2D sg2d,
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double ux1, double uy1,
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double ux2, double uy2,
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double x, double y,
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double dx1, double dy1,
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double dx2, double dy2)
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{
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rq.lock();
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try {
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validateContext(sg2d);
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rq.ensureCapacity(28);
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buf.putInt(FILL_PARALLELOGRAM);
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buf.putFloat((float) x);
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buf.putFloat((float) y);
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buf.putFloat((float) dx1);
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buf.putFloat((float) dy1);
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buf.putFloat((float) dx2);
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buf.putFloat((float) dy2);
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} finally {
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rq.unlock();
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}
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}
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public void drawParallelogram(SunGraphics2D sg2d,
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double ux1, double uy1,
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double ux2, double uy2,
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double x, double y,
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double dx1, double dy1,
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double dx2, double dy2,
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double lw1, double lw2)
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{
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rq.lock();
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try {
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validateContext(sg2d);
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rq.ensureCapacity(36);
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buf.putInt(DRAW_PARALLELOGRAM);
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buf.putFloat((float) x);
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buf.putFloat((float) y);
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buf.putFloat((float) dx1);
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buf.putFloat((float) dy1);
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buf.putFloat((float) dx2);
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buf.putFloat((float) dy2);
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buf.putFloat((float) lw1);
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buf.putFloat((float) lw2);
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} finally {
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rq.unlock();
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}
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}
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private class AAParallelogramPipe implements ParallelogramPipe {
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public void fillParallelogram(SunGraphics2D sg2d,
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double ux1, double uy1,
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double ux2, double uy2,
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double x, double y,
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double dx1, double dy1,
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double dx2, double dy2)
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{
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rq.lock();
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try {
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validateContextAA(sg2d);
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rq.ensureCapacity(28);
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buf.putInt(FILL_AAPARALLELOGRAM);
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buf.putFloat((float) x);
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buf.putFloat((float) y);
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buf.putFloat((float) dx1);
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buf.putFloat((float) dy1);
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buf.putFloat((float) dx2);
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buf.putFloat((float) dy2);
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} finally {
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rq.unlock();
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}
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}
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public void drawParallelogram(SunGraphics2D sg2d,
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double ux1, double uy1,
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double ux2, double uy2,
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double x, double y,
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double dx1, double dy1,
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double dx2, double dy2,
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double lw1, double lw2)
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{
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rq.lock();
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try {
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validateContextAA(sg2d);
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rq.ensureCapacity(36);
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buf.putInt(DRAW_AAPARALLELOGRAM);
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buf.putFloat((float) x);
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buf.putFloat((float) y);
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buf.putFloat((float) dx1);
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buf.putFloat((float) dy1);
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buf.putFloat((float) dx2);
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buf.putFloat((float) dy2);
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buf.putFloat((float) lw1);
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buf.putFloat((float) lw2);
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} finally {
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rq.unlock();
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}
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}
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}
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public void draw(SunGraphics2D sg2d, Shape s) {
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if (sg2d.strokeState == SunGraphics2D.STROKE_THIN) {
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if (s instanceof Polygon) {
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if (sg2d.transformState < SunGraphics2D.TRANSFORM_TRANSLATESCALE) {
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Polygon p = (Polygon)s;
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drawPolygon(sg2d, p.xpoints, p.ypoints, p.npoints);
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return;
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}
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}
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Path2D.Float p2df;
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int transx, transy;
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if (sg2d.transformState <= SunGraphics2D.TRANSFORM_INT_TRANSLATE) {
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if (s instanceof Path2D.Float) {
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p2df = (Path2D.Float)s;
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} else {
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p2df = new Path2D.Float(s);
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}
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transx = sg2d.transX;
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transy = sg2d.transY;
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} else {
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p2df = new Path2D.Float(s, sg2d.transform);
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|
transx = 0;
|
|
transy = 0;
|
|
}
|
|
drawPath(sg2d, p2df, transx, transy);
|
|
} else if (sg2d.strokeState < SunGraphics2D.STROKE_CUSTOM) {
|
|
ShapeSpanIterator si = LoopPipe.getStrokeSpans(sg2d, s);
|
|
try {
|
|
fillSpans(sg2d, si, 0, 0);
|
|
} finally {
|
|
si.dispose();
|
|
}
|
|
} else {
|
|
fill(sg2d, sg2d.stroke.createStrokedShape(s));
|
|
}
|
|
}
|
|
|
|
public void fill(SunGraphics2D sg2d, Shape s) {
|
|
int transx, transy;
|
|
|
|
if (sg2d.strokeState == SunGraphics2D.STROKE_THIN) {
|
|
// Here we are able to use fillPath() for
|
|
// high-quality fills.
|
|
Path2D.Float p2df;
|
|
if (sg2d.transformState <= SunGraphics2D.TRANSFORM_INT_TRANSLATE) {
|
|
if (s instanceof Path2D.Float) {
|
|
p2df = (Path2D.Float)s;
|
|
} else {
|
|
p2df = new Path2D.Float(s);
|
|
}
|
|
transx = sg2d.transX;
|
|
transy = sg2d.transY;
|
|
} else {
|
|
p2df = new Path2D.Float(s, sg2d.transform);
|
|
transx = 0;
|
|
transy = 0;
|
|
}
|
|
fillPath(sg2d, p2df, transx, transy);
|
|
return;
|
|
}
|
|
|
|
AffineTransform at;
|
|
if (sg2d.transformState <= SunGraphics2D.TRANSFORM_INT_TRANSLATE) {
|
|
// Transform (translation) will be done by FillSpans (we could
|
|
// delegate to fillPolygon() here, but most hardware accelerated
|
|
// libraries cannot handle non-convex polygons, so we will use
|
|
// the FillSpans approach by default)
|
|
at = null;
|
|
transx = sg2d.transX;
|
|
transy = sg2d.transY;
|
|
} else {
|
|
// Transform will be done by the PathIterator
|
|
at = sg2d.transform;
|
|
transx = transy = 0;
|
|
}
|
|
|
|
ShapeSpanIterator ssi = LoopPipe.getFillSSI(sg2d);
|
|
try {
|
|
// Subtract transx/y from the SSI clip to match the
|
|
// (potentially untranslated) geometry fed to it
|
|
Region clip = sg2d.getCompClip();
|
|
ssi.setOutputAreaXYXY(clip.getLoX() - transx,
|
|
clip.getLoY() - transy,
|
|
clip.getHiX() - transx,
|
|
clip.getHiY() - transy);
|
|
ssi.appendPath(s.getPathIterator(at));
|
|
fillSpans(sg2d, ssi, transx, transy);
|
|
} finally {
|
|
ssi.dispose();
|
|
}
|
|
}
|
|
}
|