author | erikj |
Tue, 12 Sep 2017 19:03:39 +0200 | |
changeset 47216 | 71c04702a3d5 |
parent 30948 | jdk/src/java.desktop/share/classes/sun/java2d/pipe/PixelToParallelogramConverter.java@0a0972d3b58d |
child 52248 | 2e330da7cbf4 |
permissions | -rw-r--r-- |
887 | 1 |
/* |
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* Copyright (c) 2008, 2011, 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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||
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package sun.java2d.pipe; |
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import java.awt.Shape; |
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import java.awt.BasicStroke; |
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import java.awt.geom.Line2D; |
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import java.awt.geom.Rectangle2D; |
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import java.awt.geom.AffineTransform; |
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import sun.java2d.SunGraphics2D; |
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import sun.awt.SunHints; |
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/** |
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* This class converts calls to the basic pixel rendering methods |
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* into calls to the methods on a ParallelogramPipe. |
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* Most calls are transformed into calls to the fill(Shape) method |
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* by the parent PixelToShapeConverter class, but some calls are |
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* transformed into calls to fill/drawParallelogram(). |
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*/ |
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public class PixelToParallelogramConverter extends PixelToShapeConverter |
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implements ShapeDrawPipe |
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{ |
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ParallelogramPipe outrenderer; |
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double minPenSize; |
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double normPosition; |
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double normRoundingBias; |
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boolean adjustfill; |
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/** |
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* @param shapepipe pipeline to forward shape calls to |
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* @param pgrampipe pipeline to forward parallelogram calls to |
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* (and drawLine calls if possible) |
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* @param minPenSize minimum pen size for dropout control |
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* @param normPosition sub-pixel location to normalize endpoints |
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* for STROKE_NORMALIZE cases |
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* @param adjustfill boolean to control whethere normalization |
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* constants are also applied to fill operations |
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* (normally true for non-AA, false for AA) |
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*/ |
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public PixelToParallelogramConverter(ShapeDrawPipe shapepipe, |
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ParallelogramPipe pgrampipe, |
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double minPenSize, |
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double normPosition, |
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boolean adjustfill) |
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{ |
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super(shapepipe); |
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outrenderer = pgrampipe; |
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this.minPenSize = minPenSize; |
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this.normPosition = normPosition; |
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this.normRoundingBias = 0.5 - normPosition; |
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this.adjustfill = adjustfill; |
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} |
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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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if (!drawGeneralLine(sg2d, x1, y1, x2, y2)) { |
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super.drawLine(sg2d, x1, y1, x2, y2); |
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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 w, int h) |
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{ |
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if (w >= 0 && h >= 0) { |
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if (sg2d.strokeState < SunGraphics2D.STROKE_CUSTOM) { |
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BasicStroke bs = ((BasicStroke) sg2d.stroke); |
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if (w > 0 && h > 0) { |
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if (bs.getLineJoin() == BasicStroke.JOIN_MITER && |
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bs.getDashArray() == null) |
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{ |
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double lw = bs.getLineWidth(); |
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drawRectangle(sg2d, x, y, w, h, lw); |
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return; |
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} |
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} else { |
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// Note: This calls the integer version which |
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// will verify that the local drawLine optimizations |
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// work and call super.drawLine(), if not. |
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drawLine(sg2d, x, y, x+w, y+h); |
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return; |
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} |
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} |
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super.drawRect(sg2d, x, y, w, h); |
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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 w, int h) |
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{ |
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if (w > 0 && h > 0) { |
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fillRectangle(sg2d, x, y, w, h); |
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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_CUSTOM) { |
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BasicStroke bs = ((BasicStroke) sg2d.stroke); |
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if (s instanceof Rectangle2D) { |
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if (bs.getLineJoin() == BasicStroke.JOIN_MITER && |
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bs.getDashArray() == null) |
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{ |
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Rectangle2D r2d = (Rectangle2D) s; |
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double w = r2d.getWidth(); |
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double h = r2d.getHeight(); |
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double x = r2d.getX(); |
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double y = r2d.getY(); |
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if (w >= 0 && h >= 0) { |
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double lw = bs.getLineWidth(); |
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drawRectangle(sg2d, x, y, w, h, lw); |
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} |
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return; |
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} |
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} else if (s instanceof Line2D) { |
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Line2D l2d = (Line2D) s; |
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if (drawGeneralLine(sg2d, |
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l2d.getX1(), l2d.getY1(), |
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l2d.getX2(), l2d.getY2())) |
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{ |
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return; |
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} |
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} |
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} |
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outpipe.draw(sg2d, s); |
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} |
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public void fill(SunGraphics2D sg2d, Shape s) { |
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if (s instanceof Rectangle2D) { |
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Rectangle2D r2d = (Rectangle2D) s; |
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double w = r2d.getWidth(); |
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double h = r2d.getHeight(); |
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if (w > 0 && h > 0) { |
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double x = r2d.getX(); |
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double y = r2d.getY(); |
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fillRectangle(sg2d, x, y, w, h); |
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} |
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return; |
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} |
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outpipe.fill(sg2d, s); |
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} |
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static double len(double x, double y) { |
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return ((x == 0) ? Math.abs(y) |
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: ((y == 0) ? Math.abs(x) |
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: Math.sqrt(x * x + y * y))); |
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} |
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double normalize(double v) { |
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return Math.floor(v + normRoundingBias) + normPosition; |
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} |
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public boolean drawGeneralLine(SunGraphics2D sg2d, |
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double ux1, double uy1, |
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double ux2, double uy2) |
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{ |
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if (sg2d.strokeState == SunGraphics2D.STROKE_CUSTOM || |
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sg2d.strokeState == SunGraphics2D.STROKE_THINDASHED) |
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{ |
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return false; |
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} |
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BasicStroke bs = (BasicStroke) sg2d.stroke; |
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int cap = bs.getEndCap(); |
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if (cap == BasicStroke.CAP_ROUND || bs.getDashArray() != null) { |
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// TODO: we could construct the GeneralPath directly |
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// for CAP_ROUND and save a lot of processing in that case... |
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// And again, we would need to deal with dropout control... |
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return false; |
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} |
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double lw = bs.getLineWidth(); |
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// Save the original dx, dy in case we need it to transform |
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// the linewidth as a perpendicular vector below |
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double dx = ux2 - ux1; |
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double dy = uy2 - uy1; |
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double x1, y1, x2, y2; |
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switch (sg2d.transformState) { |
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case SunGraphics2D.TRANSFORM_GENERIC: |
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case SunGraphics2D.TRANSFORM_TRANSLATESCALE: |
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{ |
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double coords[] = {ux1, uy1, ux2, uy2}; |
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sg2d.transform.transform(coords, 0, coords, 0, 2); |
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x1 = coords[0]; |
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y1 = coords[1]; |
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x2 = coords[2]; |
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y2 = coords[3]; |
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} |
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break; |
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case SunGraphics2D.TRANSFORM_ANY_TRANSLATE: |
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case SunGraphics2D.TRANSFORM_INT_TRANSLATE: |
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{ |
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double tx = sg2d.transform.getTranslateX(); |
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double ty = sg2d.transform.getTranslateY(); |
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x1 = ux1 + tx; |
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y1 = uy1 + ty; |
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x2 = ux2 + tx; |
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y2 = uy2 + ty; |
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} |
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break; |
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case SunGraphics2D.TRANSFORM_ISIDENT: |
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x1 = ux1; |
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y1 = uy1; |
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x2 = ux2; |
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y2 = uy2; |
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break; |
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default: |
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throw new InternalError("unknown TRANSFORM state..."); |
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} |
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if (sg2d.strokeHint != SunHints.INTVAL_STROKE_PURE) { |
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if (sg2d.strokeState == SunGraphics2D.STROKE_THIN && |
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outrenderer instanceof PixelDrawPipe) |
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{ |
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// PixelDrawPipes will add sg2d.transXY so we need to factor |
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// that out... |
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int ix1 = (int) Math.floor(x1 - sg2d.transX); |
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int iy1 = (int) Math.floor(y1 - sg2d.transY); |
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int ix2 = (int) Math.floor(x2 - sg2d.transX); |
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int iy2 = (int) Math.floor(y2 - sg2d.transY); |
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((PixelDrawPipe)outrenderer).drawLine(sg2d, ix1, iy1, ix2, iy2); |
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return true; |
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} |
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x1 = normalize(x1); |
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y1 = normalize(y1); |
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x2 = normalize(x2); |
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y2 = normalize(y2); |
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} |
|
250 |
if (sg2d.transformState >= SunGraphics2D.TRANSFORM_TRANSLATESCALE) { |
|
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// Transform the linewidth... |
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252 |
// calculate the scaling factor for a unit vector |
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253 |
// perpendicular to the original user space line. |
|
254 |
double len = len(dx, dy); |
|
255 |
if (len == 0) { |
|
256 |
dx = len = 1; |
|
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// dy = 0; already |
|
258 |
} |
|
259 |
// delta transform the transposed (90 degree rotated) unit vector |
|
260 |
double unitvector[] = {dy/len, -dx/len}; |
|
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sg2d.transform.deltaTransform(unitvector, 0, unitvector, 0, 1); |
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262 |
lw *= len(unitvector[0], unitvector[1]); |
|
263 |
} |
|
264 |
lw = Math.max(lw, minPenSize); |
|
265 |
dx = x2 - x1; |
|
266 |
dy = y2 - y1; |
|
267 |
double len = len(dx, dy); |
|
268 |
double udx, udy; |
|
269 |
if (len == 0) { |
|
270 |
if (cap == BasicStroke.CAP_BUTT) { |
|
271 |
return true; |
|
272 |
} |
|
273 |
udx = lw; |
|
274 |
udy = 0; |
|
275 |
} else { |
|
276 |
udx = lw * dx / len; |
|
277 |
udy = lw * dy / len; |
|
278 |
} |
|
279 |
double px = x1 + udy / 2.0; |
|
280 |
double py = y1 - udx / 2.0; |
|
281 |
if (cap == BasicStroke.CAP_SQUARE) { |
|
282 |
px -= udx / 2.0; |
|
283 |
py -= udy / 2.0; |
|
284 |
dx += udx; |
|
285 |
dy += udy; |
|
286 |
} |
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outrenderer.fillParallelogram(sg2d, ux1, uy1, ux2, uy2, |
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288 |
px, py, -udy, udx, dx, dy); |
887 | 289 |
return true; |
290 |
} |
|
291 |
||
292 |
public void fillRectangle(SunGraphics2D sg2d, |
|
293 |
double rx, double ry, |
|
294 |
double rw, double rh) |
|
295 |
{ |
|
296 |
double px, py; |
|
297 |
double dx1, dy1, dx2, dy2; |
|
298 |
AffineTransform txform = sg2d.transform; |
|
299 |
dx1 = txform.getScaleX(); |
|
300 |
dy1 = txform.getShearY(); |
|
301 |
dx2 = txform.getShearX(); |
|
302 |
dy2 = txform.getScaleY(); |
|
303 |
px = rx * dx1 + ry * dx2 + txform.getTranslateX(); |
|
304 |
py = rx * dy1 + ry * dy2 + txform.getTranslateY(); |
|
305 |
dx1 *= rw; |
|
306 |
dy1 *= rw; |
|
307 |
dx2 *= rh; |
|
308 |
dy2 *= rh; |
|
309 |
if (adjustfill && |
|
310 |
sg2d.strokeState < SunGraphics2D.STROKE_CUSTOM && |
|
311 |
sg2d.strokeHint != SunHints.INTVAL_STROKE_PURE) |
|
312 |
{ |
|
313 |
double newx = normalize(px); |
|
314 |
double newy = normalize(py); |
|
315 |
dx1 = normalize(px + dx1) - newx; |
|
316 |
dy1 = normalize(py + dy1) - newy; |
|
317 |
dx2 = normalize(px + dx2) - newx; |
|
318 |
dy2 = normalize(py + dy2) - newy; |
|
319 |
px = newx; |
|
320 |
py = newy; |
|
321 |
} |
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322 |
outrenderer.fillParallelogram(sg2d, rx, ry, rx+rw, ry+rh, |
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|
323 |
px, py, dx1, dy1, dx2, dy2); |
887 | 324 |
} |
325 |
||
326 |
public void drawRectangle(SunGraphics2D sg2d, |
|
327 |
double rx, double ry, |
|
328 |
double rw, double rh, |
|
329 |
double lw) |
|
330 |
{ |
|
331 |
double px, py; |
|
332 |
double dx1, dy1, dx2, dy2; |
|
333 |
double lw1, lw2; |
|
334 |
AffineTransform txform = sg2d.transform; |
|
335 |
dx1 = txform.getScaleX(); |
|
336 |
dy1 = txform.getShearY(); |
|
337 |
dx2 = txform.getShearX(); |
|
338 |
dy2 = txform.getScaleY(); |
|
339 |
px = rx * dx1 + ry * dx2 + txform.getTranslateX(); |
|
340 |
py = rx * dy1 + ry * dy2 + txform.getTranslateY(); |
|
341 |
// lw along dx1,dy1 scale by transformed length of dx2,dy2 vectors |
|
342 |
// and vice versa |
|
343 |
lw1 = len(dx1, dy1) * lw; |
|
344 |
lw2 = len(dx2, dy2) * lw; |
|
345 |
dx1 *= rw; |
|
346 |
dy1 *= rw; |
|
347 |
dx2 *= rh; |
|
348 |
dy2 *= rh; |
|
349 |
if (sg2d.strokeState < SunGraphics2D.STROKE_CUSTOM && |
|
350 |
sg2d.strokeHint != SunHints.INTVAL_STROKE_PURE) |
|
351 |
{ |
|
352 |
double newx = normalize(px); |
|
353 |
double newy = normalize(py); |
|
354 |
dx1 = normalize(px + dx1) - newx; |
|
355 |
dy1 = normalize(py + dy1) - newy; |
|
356 |
dx2 = normalize(px + dx2) - newx; |
|
357 |
dy2 = normalize(py + dy2) - newy; |
|
358 |
px = newx; |
|
359 |
py = newy; |
|
360 |
} |
|
361 |
lw1 = Math.max(lw1, minPenSize); |
|
362 |
lw2 = Math.max(lw2, minPenSize); |
|
363 |
double len1 = len(dx1, dy1); |
|
364 |
double len2 = len(dx2, dy2); |
|
365 |
if (lw1 >= len1 || lw2 >= len2) { |
|
366 |
// The line widths are large enough to consume the |
|
367 |
// entire hole in the middle of the parallelogram |
|
368 |
// so we can just fill the outer parallelogram. |
|
369 |
fillOuterParallelogram(sg2d, |
|
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370 |
rx, ry, rx+rw, ry+rh, |
887 | 371 |
px, py, dx1, dy1, dx2, dy2, |
372 |
len1, len2, lw1, lw2); |
|
373 |
} else { |
|
374 |
outrenderer.drawParallelogram(sg2d, |
|
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|
375 |
rx, ry, rx+rw, ry+rh, |
887 | 376 |
px, py, dx1, dy1, dx2, dy2, |
377 |
lw1 / len1, lw2 / len2); |
|
378 |
} |
|
379 |
} |
|
380 |
||
381 |
/** |
|
382 |
* This utility function handles the case where a drawRectangle |
|
383 |
* operation discovered that the interior hole in the rectangle |
|
384 |
* or parallelogram has been completely filled in by the stroke |
|
385 |
* width. It calculates the outer parallelogram of the stroke |
|
386 |
* and issues a single fillParallelogram request to fill it. |
|
387 |
*/ |
|
388 |
public void fillOuterParallelogram(SunGraphics2D sg2d, |
|
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|
389 |
double ux1, double uy1, |
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390 |
double ux2, double uy2, |
887 | 391 |
double px, double py, |
392 |
double dx1, double dy1, |
|
393 |
double dx2, double dy2, |
|
394 |
double len1, double len2, |
|
395 |
double lw1, double lw2) |
|
396 |
{ |
|
397 |
double udx1 = dx1 / len1; |
|
398 |
double udy1 = dy1 / len1; |
|
399 |
double udx2 = dx2 / len2; |
|
400 |
double udy2 = dy2 / len2; |
|
401 |
if (len1 == 0) { |
|
402 |
// len1 is 0, replace udxy1 with perpendicular of udxy2 |
|
403 |
if (len2 == 0) { |
|
404 |
// both are 0, use a unit Y vector for udxy2 |
|
405 |
udx2 = 0; |
|
406 |
udy2 = 1; |
|
407 |
} |
|
408 |
udx1 = udy2; |
|
409 |
udy1 = -udx2; |
|
410 |
} else if (len2 == 0) { |
|
411 |
// len2 is 0, replace udxy2 with perpendicular of udxy1 |
|
412 |
udx2 = udy1; |
|
413 |
udy2 = -udx1; |
|
414 |
} |
|
415 |
udx1 *= lw1; |
|
416 |
udy1 *= lw1; |
|
417 |
udx2 *= lw2; |
|
418 |
udy2 *= lw2; |
|
419 |
px -= (udx1 + udx2) / 2; |
|
420 |
py -= (udy1 + udy2) / 2; |
|
421 |
dx1 += udx1; |
|
422 |
dy1 += udy1; |
|
423 |
dx2 += udx2; |
|
424 |
dy2 += udy2; |
|
425 |
||
9653
6a1eff16874d
7043054: REGRESSION: JDK 7 b126 : Wrong userBounds in Paint.createContext()
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parents:
5506
diff
changeset
|
426 |
outrenderer.fillParallelogram(sg2d, ux1, uy1, ux2, uy2, |
6a1eff16874d
7043054: REGRESSION: JDK 7 b126 : Wrong userBounds in Paint.createContext()
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parents:
5506
diff
changeset
|
427 |
px, py, dx1, dy1, dx2, dy2); |
887 | 428 |
} |
429 |
} |