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- /*
- * 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.Color;
- import java.awt.Dimension;
- import java.awt.Graphics2D;
- import java.awt.Paint;
- import java.awt.Point;
- import java.awt.Rectangle;
- import java.awt.font.GlyphVector;
- import java.awt.geom.AffineTransform;
- import java.awt.geom.Point2D;
- import java.io.IOException;
- import java.util.Stack;
-
- import org.w3c.dom.Document;
-
- import org.apache.fop.fonts.Font;
- import org.apache.fop.fonts.FontInfo;
- import org.apache.fop.fonts.FontTriplet;
- import org.apache.fop.render.RenderingContext;
- import org.apache.fop.render.intermediate.AbstractIFPainter;
- import org.apache.fop.render.intermediate.BorderPainter;
- import org.apache.fop.render.intermediate.GraphicsPainter;
- import org.apache.fop.render.intermediate.IFContext;
- import org.apache.fop.render.intermediate.IFDocumentHandler;
- import org.apache.fop.render.intermediate.IFException;
- import org.apache.fop.render.intermediate.IFState;
- import org.apache.fop.traits.BorderProps;
- import org.apache.fop.traits.RuleStyle;
- import org.apache.fop.util.CharUtilities;
-
- /**
- * {@link org.apache.fop.render.intermediate.IFPainter} implementation that paints on a Graphics2D
- * instance.
- */
- public class Java2DPainter extends AbstractIFPainter<IFDocumentHandler> {
-
- /** the IF context */
- protected IFContext ifContext;
-
- /** The font information */
- protected FontInfo fontInfo;
-
- private final GraphicsPainter graphicsPainter;
-
- private final BorderPainter borderPainter;
-
- /** The current state, holds a Graphics2D and its context */
- protected Java2DGraphicsState g2dState;
- private Stack<Java2DGraphicsState> g2dStateStack = new Stack<Java2DGraphicsState>();
-
- /**
- * Main constructor.
- * @param g2d the target Graphics2D instance
- * @param context the IF context
- * @param fontInfo the font information
- */
- public Java2DPainter(Graphics2D g2d, IFContext context, FontInfo fontInfo) {
- this(g2d, context, fontInfo, new Java2DDocumentHandler());
- }
-
- public Java2DPainter(Graphics2D g2d, IFContext context, FontInfo fontInfo, IFDocumentHandler documentHandler) {
- this(g2d, context, fontInfo, null, documentHandler);
- }
-
- /**
- * Special constructor for embedded use (when another painter uses Java2DPainter
- * to convert part of a document into a bitmap, for example).
- * @param g2d the target Graphics2D instance
- * @param context the IF context
- * @param fontInfo the font information
- * @param state the IF state object
- */
- public Java2DPainter(Graphics2D g2d, IFContext context, FontInfo fontInfo, IFState state) {
- this(g2d, context, fontInfo, state, new Java2DDocumentHandler());
- }
-
- public Java2DPainter(Graphics2D g2d, IFContext context, FontInfo fontInfo, IFState state,
- IFDocumentHandler documentHandler) {
- super(documentHandler);
- this.ifContext = context;
- if (state != null) {
- this.state = state.push();
- } else {
- this.state = IFState.create();
- }
- this.fontInfo = fontInfo;
- this.g2dState = new Java2DGraphicsState(g2d, fontInfo, g2d.getTransform());
- graphicsPainter = new Java2DGraphicsPainter(this);
- this.borderPainter = new BorderPainter(graphicsPainter);
- }
-
- /** {@inheritDoc} */
- public IFContext getContext() {
- return this.ifContext;
- }
-
- /**
- * Returns the associated {@link FontInfo} object.
- * @return the font info
- */
- protected FontInfo getFontInfo() {
- return this.fontInfo;
- }
-
- /**
- * Returns the Java2D graphics state.
- * @return the graphics state
- */
- protected Java2DGraphicsState getState() {
- return this.g2dState;
- }
-
- //----------------------------------------------------------------------------------------------
-
-
- /** {@inheritDoc} */
- public void startViewport(AffineTransform transform, Dimension size, Rectangle clipRect)
- throws IFException {
- saveGraphicsState();
- try {
- concatenateTransformationMatrix(transform);
- if (clipRect != null) {
- clipRect(clipRect);
- }
- } catch (IOException ioe) {
- throw new IFException("I/O error in startViewport()", ioe);
- }
- }
-
- /** {@inheritDoc} */
- public void endViewport() throws IFException {
- restoreGraphicsState();
- }
-
- /** {@inheritDoc} */
- public void startGroup(AffineTransform transform, String layer) throws IFException {
- saveGraphicsState();
- try {
- concatenateTransformationMatrix(transform);
- } catch (IOException ioe) {
- throw new IFException("I/O error in startGroup()", ioe);
- }
- }
-
- /** {@inheritDoc} */
- public void endGroup() throws IFException {
- restoreGraphicsState();
- }
-
- /** {@inheritDoc} */
- public void drawImage(String uri, Rectangle rect) throws IFException {
- drawImageUsingURI(uri, rect);
- }
-
- /** {@inheritDoc} */
- protected RenderingContext createRenderingContext() {
- Java2DRenderingContext java2dContext = new Java2DRenderingContext(
- getUserAgent(), g2dState.getGraph(), getFontInfo());
- return java2dContext;
- }
-
- /** {@inheritDoc} */
- public void drawImage(Document doc, Rectangle rect) throws IFException {
- drawImageUsingDocument(doc, rect);
- }
-
- /** {@inheritDoc} */
- public void clipRect(Rectangle rect) throws IFException {
- getState().updateClip(rect);
- }
-
- /** {@inheritDoc} */
- public void clipBackground(Rectangle rect, BorderProps bpsBefore, BorderProps bpsAfter,
- BorderProps bpsStart, BorderProps bpsEnd) throws IFException {
- // TODO Auto-generated method stub
-
- }
-
- /** {@inheritDoc} */
- public void fillRect(Rectangle rect, Paint fill) throws IFException {
- if (fill == null) {
- return;
- }
- if (rect.width != 0 && rect.height != 0) {
- g2dState.updatePaint(fill);
- g2dState.getGraph().fill(rect);
- }
- }
-
- /** {@inheritDoc} */
- public void drawBorderRect(Rectangle rect, BorderProps top, BorderProps bottom,
- BorderProps left, BorderProps right) throws IFException {
- if (top != null || bottom != null || left != null || right != null) {
- this.borderPainter.drawBorders(rect, top, bottom, left, right, null);
- }
- }
-
- /** {@inheritDoc} */
- public void drawLine(Point start, Point end, int width, Color color, RuleStyle style)
- throws IFException {
- try {
- this.graphicsPainter.drawLine(start, end, width, color, style);
- } catch (IOException ioe) {
- throw new IFException("Unexpected error drawing line", ioe);
- }
- }
-
- /** {@inheritDoc} */
- public void drawText(int x, int y, int letterSpacing, int wordSpacing, int[][] dp, String text)
- throws IFException {
- g2dState.updateColor(state.getTextColor());
- FontTriplet triplet = new FontTriplet(
- state.getFontFamily(), state.getFontStyle(), state.getFontWeight());
- //TODO Ignored: state.getFontVariant()
- //TODO Opportunity for font caching if font state is more heavily used
- Font font = getFontInfo().getFontInstance(triplet, state.getFontSize());
- //String fontName = font.getFontName();
- //float fontSize = state.getFontSize() / 1000f;
- g2dState.updateFont(font.getFontName(), state.getFontSize() * 1000);
-
- Graphics2D g2d = this.g2dState.getGraph();
- GlyphVector gv = Java2DUtil.createGlyphVector(text, g2d, font, fontInfo);
- Point2D cursor = new Point2D.Float(0, 0);
-
- int l = text.length();
-
- if (dp != null && dp[0] != null && (dp[0][0] != 0 || dp[0][1] != 0)) {
- cursor.setLocation(cursor.getX() + dp[0][0], cursor.getY() - dp[0][1]);
- gv.setGlyphPosition(0, cursor);
- }
-
- int currentIdx = 0;
- for (int i = 0; i < l; i++) {
- int orgChar = text.codePointAt(i);
- // The dp (GPOS/kerning adjustment) is performed over glyphs and not
- // characters (GlyphMapping.processWordMapping). The length of dp is
- // adjusted later to fit the length of the String adding trailing 0.
- // This means that it's probably ok to consume one of the 2 surrogate
- // pairs.
- i += CharUtilities.incrementIfNonBMP(orgChar);
-
- float xGlyphAdjust = 0;
- float yGlyphAdjust = 0;
- int cw = font.getCharWidth(orgChar);
-
- if ((wordSpacing != 0) && CharUtilities.isAdjustableSpace(orgChar)) {
- xGlyphAdjust += wordSpacing;
- }
- xGlyphAdjust += letterSpacing;
- if (dp != null && i < dp.length && dp[i] != null) {
- xGlyphAdjust += dp[i][2] - dp[i][0];
- yGlyphAdjust += dp[i][3] - dp[i][1];
- }
- if (dp != null && i < dp.length - 1 && dp[i + 1] != null) {
- xGlyphAdjust += dp[i + 1][0];
- yGlyphAdjust += dp[i + 1][1];
- }
-
- cursor.setLocation(cursor.getX() + cw + xGlyphAdjust, cursor.getY() - yGlyphAdjust);
- gv.setGlyphPosition(++currentIdx, cursor);
- }
- g2d.drawGlyphVector(gv, x, y);
- }
-
- /** Saves the current graphics state on the stack. */
- protected void saveGraphicsState() {
- g2dStateStack.push(g2dState);
- g2dState = new Java2DGraphicsState(g2dState);
- }
-
- /** Restores the last graphics state from the stack. */
- protected void restoreGraphicsState() {
- g2dState.dispose();
- g2dState = g2dStateStack.pop();
- }
-
- private void concatenateTransformationMatrix(AffineTransform transform) throws IOException {
- g2dState.transform(transform);
- }
-
- }
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