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Diffstat (limited to 'src/java/org/apache/fop/render/java2d/Java2DGraphicsPainter.java')
-rw-r--r-- | src/java/org/apache/fop/render/java2d/Java2DGraphicsPainter.java | 333 |
1 files changed, 333 insertions, 0 deletions
diff --git a/src/java/org/apache/fop/render/java2d/Java2DGraphicsPainter.java b/src/java/org/apache/fop/render/java2d/Java2DGraphicsPainter.java new file mode 100644 index 000000000..b485daf3d --- /dev/null +++ b/src/java/org/apache/fop/render/java2d/Java2DGraphicsPainter.java @@ -0,0 +1,333 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/* $Id$ */ + +package org.apache.fop.render.java2d; + +import java.awt.BasicStroke; +import java.awt.Color; +import java.awt.Graphics2D; +import java.awt.Point; +import java.awt.Rectangle; +import java.awt.geom.GeneralPath; +import java.awt.geom.Line2D; +import java.io.IOException; + +import org.apache.commons.logging.Log; +import org.apache.commons.logging.LogFactory; + +import org.apache.fop.fo.Constants; +import org.apache.fop.render.intermediate.GraphicsPainter; +import org.apache.fop.traits.RuleStyle; +import org.apache.fop.util.ColorUtil; + +class Java2DGraphicsPainter implements GraphicsPainter { + + /** logging instance */ + static final Log log = LogFactory.getLog(Java2DGraphicsPainter.class); + + + private GeneralPath currentPath; + + private final Java2DPainter painter; + + + Java2DGraphicsPainter(Java2DPainter painter) { + this.painter = painter; + } + + private Java2DGraphicsState getG2DState() { + return this.painter.g2dState; + } + + + private Graphics2D getG2D() { + return getG2DState().getGraph(); + } + + public void drawBorderLine(int x1, int y1, int x2, int y2, + boolean horz, boolean startOrBefore, int style, Color color) + throws IOException { + float w = x2 - x1; + float h = y2 - y1; + if ((w < 0) || (h < 0)) { + log.error("Negative extent received. Border won't be painted."); + return; + } + switch (style) { + case Constants.EN_DASHED: + getG2D().setColor(color); + if (horz) { + float unit = Math.abs(2 * h); + int rep = (int)(w / unit); + if (rep % 2 == 0) { + rep++; + } + unit = w / rep; + float ym = y1 + (h / 2); + BasicStroke s = new BasicStroke(h, BasicStroke.CAP_BUTT, + BasicStroke.JOIN_MITER, 10.0f, new float[] {unit}, 0); + getG2D().setStroke(s); + getG2D().draw(new Line2D.Float(x1, ym, x2, ym)); + } else { + float unit = Math.abs(2 * w); + int rep = (int)(h / unit); + if (rep % 2 == 0) { + rep++; + } + unit = h / rep; + float xm = x1 + (w / 2); + BasicStroke s = new BasicStroke(w, BasicStroke.CAP_BUTT, + BasicStroke.JOIN_MITER, 10.0f, new float[] {unit}, 0); + getG2D().setStroke(s); + getG2D().draw(new Line2D.Float(xm, y1, xm, y2)); + } + break; + case Constants.EN_DOTTED: + getG2D().setColor(color); + if (horz) { + float unit = Math.abs(2 * h); + int rep = (int)(w / unit); + if (rep % 2 == 0) { + rep++; + } + unit = w / rep; + float ym = y1 + (h / 2); + BasicStroke s = new BasicStroke(h, BasicStroke.CAP_ROUND, + BasicStroke.JOIN_MITER, 10.0f, new float[] {0, unit}, 0); + getG2D().setStroke(s); + getG2D().draw(new Line2D.Float(x1, ym, x2, ym)); + } else { + float unit = Math.abs(2 * w); + int rep = (int)(h / unit); + if (rep % 2 == 0) { + rep++; + } + unit = h / rep; + float xm = x1 + (w / 2); + BasicStroke s = new BasicStroke(w, BasicStroke.CAP_ROUND, + BasicStroke.JOIN_MITER, 10.0f, new float[] {0, unit}, 0); + getG2D().setStroke(s); + getG2D().draw(new Line2D.Float(xm, y1, xm, y2)); + } + break; + case Constants.EN_DOUBLE: + getG2D().setColor(color); + if (horz) { + float h3 = h / 3; + float ym1 = y1 + (h3 / 2); + float ym2 = ym1 + h3 + h3; + BasicStroke s = new BasicStroke(h3); + getG2D().setStroke(s); + getG2D().draw(new Line2D.Float(x1, ym1, x2, ym1)); + getG2D().draw(new Line2D.Float(x1, ym2, x2, ym2)); + } else { + float w3 = w / 3; + float xm1 = x1 + (w3 / 2); + float xm2 = xm1 + w3 + w3; + BasicStroke s = new BasicStroke(w3); + getG2D().setStroke(s); + getG2D().draw(new Line2D.Float(xm1, y1, xm1, y2)); + getG2D().draw(new Line2D.Float(xm2, y1, xm2, y2)); + } + break; + case Constants.EN_GROOVE: + case Constants.EN_RIDGE: + float colFactor = (style == Constants.EN_GROOVE ? 0.4f : -0.4f); + if (horz) { + Color uppercol = ColorUtil.lightenColor(color, -colFactor); + Color lowercol = ColorUtil.lightenColor(color, colFactor); + float h3 = h / 3; + float ym1 = y1 + (h3 / 2); + getG2D().setStroke(new BasicStroke(h3)); + getG2D().setColor(uppercol); + getG2D().draw(new Line2D.Float(x1, ym1, x2, ym1)); + getG2D().setColor(color); + getG2D().draw(new Line2D.Float(x1, ym1 + h3, x2, ym1 + h3)); + getG2D().setColor(lowercol); + getG2D().draw(new Line2D.Float(x1, ym1 + h3 + h3, x2, ym1 + h3 + h3)); + } else { + Color leftcol = ColorUtil.lightenColor(color, -colFactor); + Color rightcol = ColorUtil.lightenColor(color, colFactor); + float w3 = w / 3; + float xm1 = x1 + (w3 / 2); + getG2D().setStroke(new BasicStroke(w3)); + getG2D().setColor(leftcol); + getG2D().draw(new Line2D.Float(xm1, y1, xm1, y2)); + getG2D().setColor(color); + getG2D().draw(new Line2D.Float(xm1 + w3, y1, xm1 + w3, y2)); + getG2D().setColor(rightcol); + getG2D().draw(new Line2D.Float(xm1 + w3 + w3, y1, xm1 + w3 + w3, y2)); + } + break; + case Constants.EN_INSET: + case Constants.EN_OUTSET: + colFactor = (style == Constants.EN_OUTSET ? 0.4f : -0.4f); + if (horz) { + color = ColorUtil.lightenColor(color, (startOrBefore ? 1 : -1) * colFactor); + getG2D().setStroke(new BasicStroke(h)); + float ym1 = y1 + (h / 2); + getG2D().setColor(color); + getG2D().draw(new Line2D.Float(x1, ym1, x2, ym1)); + } else { + color = ColorUtil.lightenColor(color, (startOrBefore ? 1 : -1) * colFactor); + float xm1 = x1 + (w / 2); + getG2D().setStroke(new BasicStroke(w)); + getG2D().setColor(color); + getG2D().draw(new Line2D.Float(xm1, y1, xm1, y2)); + } + break; + case Constants.EN_HIDDEN: + break; + default: + getG2D().setColor(color); + if (horz) { + float ym = y1 + (h / 2); + getG2D().setStroke(new BasicStroke(h)); + getG2D().draw(new Line2D.Float(x1, ym, x2, ym)); + } else { + float xm = x1 + (w / 2); + getG2D().setStroke(new BasicStroke(w)); + getG2D().draw(new Line2D.Float(xm, y1, xm, y2)); + } + } + } + + public void drawLine(Point start, Point end, int width, Color color, + RuleStyle style) throws IOException { + if (start.y != end.y) { + //TODO Support arbitrary lines if necessary + throw new UnsupportedOperationException( + "Can only deal with horizontal lines right now"); + } + + saveGraphicsState(); + int half = width / 2; + int starty = start.y - half; + Rectangle boundingRect = new Rectangle(start.x, start.y - half, end.x - start.x, width); + getG2DState().updateClip(boundingRect); + + switch (style.getEnumValue()) { + case Constants.EN_SOLID: + case Constants.EN_DASHED: + case Constants.EN_DOUBLE: + drawBorderLine(start.x, start.y - half, end.x, end.y + half, + true, true, style.getEnumValue(), color); + break; + case Constants.EN_DOTTED: + int shift = half; //This shifts the dots to the right by half a dot's width + drawBorderLine(start.x + shift, start.y - half, end.x + shift, end.y + half, + true, true, style.getEnumValue(), color); + break; + case Constants.EN_GROOVE: + case Constants.EN_RIDGE: + getG2DState().updateColor(ColorUtil.lightenColor(color, 0.6f)); + moveTo(start.x, starty); + lineTo(end.x, starty); + lineTo(end.x, starty + 2 * half); + lineTo(start.x, starty + 2 * half); + closePath(); + getG2D().fill(currentPath); + currentPath = null; + getG2DState().updateColor(color); + if (style.getEnumValue() == Constants.EN_GROOVE) { + moveTo(start.x, starty); + lineTo(end.x, starty); + lineTo(end.x, starty + half); + lineTo(start.x + half, starty + half); + lineTo(start.x, starty + 2 * half); + } else { + moveTo(end.x, starty); + lineTo(end.x, starty + 2 * half); + lineTo(start.x, starty + 2 * half); + lineTo(start.x, starty + half); + lineTo(end.x - half, starty + half); + } + closePath(); + getG2D().fill(currentPath); + currentPath = null; + + case Constants.EN_NONE: + // No rule is drawn + break; + default: + } // end switch + restoreGraphicsState(); + } + + /** {@inheritDoc} */ + public void moveTo(int x, int y) throws IOException { + if (currentPath == null) { + currentPath = new GeneralPath(); + } + currentPath.moveTo(x, y); + } + + /** {@inheritDoc} */ + public void lineTo(int x, int y) throws IOException { + if (currentPath == null) { + currentPath = new GeneralPath(); + } + currentPath.lineTo(x, y); + } + + /** {@inheritDoc} */ + public void arcTo(double startAngle, double endAngle, int cx, int cy, + int width, int height) throws IOException { + } + + /** {@inheritDoc} */ + public void rotateCoordinates(double angle) throws IOException { + } + + /** {@inheritDoc} */ + public void translateCoordinates(int xTranslate, int yTranslate) + throws IOException { + } + + /** {@inheritDoc} */ + public void scaleCoordinates(float xScale, float yScale) + throws IOException { + } + + /** {@inheritDoc} */ + public void closePath() throws IOException { + currentPath.closePath(); + } + + /** {@inheritDoc} */ + public void clip() throws IOException { + if (currentPath == null) { + throw new IllegalStateException("No current path available!"); + } + getG2DState().updateClip(currentPath); + currentPath = null; + } + + /** {@inheritDoc} */ + public void saveGraphicsState() throws IOException { + this.painter.saveGraphicsState(); + } + + /** {@inheritDoc} */ + public void restoreGraphicsState() throws IOException { + this.painter.restoreGraphicsState(); + this.currentPath = null; + } + +}
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