|
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332 |
- /*
- * 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;
- }
- }
|