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Open HTML to PDF is a CSS 2.1 renderer written in Java. This artifact contains the core rendering and layout code.
/*
* {{{ header & license
* Copyright (c) 2006 Wisconsin Court System
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* }}}
*/
package com.openhtmltopdf.swing;
import com.openhtmltopdf.bidi.BidiReorderer;
import com.openhtmltopdf.css.parser.FSColor;
import com.openhtmltopdf.css.parser.FSRGBColor;
import com.openhtmltopdf.extend.*;
import com.openhtmltopdf.render.*;
import javax.swing.*;
import java.awt.*;
import java.awt.RenderingHints.Key;
import java.awt.font.GlyphVector;
import java.awt.geom.AffineTransform;
import java.awt.geom.Point2D;
import java.awt.image.BufferedImage;
import java.util.Collections;
import java.util.List;
import java.util.Stack;
public class Java2DOutputDevice extends AbstractOutputDevice implements OutputDevice {
private final Graphics2D _graphics;
private AWTFSFont _font;
public Java2DOutputDevice(Graphics2D graphics) {
_graphics = graphics;
}
public Java2DOutputDevice(BufferedImage outputImage) {
this(outputImage.createGraphics());
}
public void drawSelection(RenderingContext c, InlineText inlineText) {
if (inlineText.isSelected()) {
InlineLayoutBox iB = inlineText.getParent();
String text = inlineText.getSubstring();
if (text != null && text.length() > 0) {
FSFont font = iB.getStyle().getFSFont(c);
FSGlyphVector glyphVector = c.getTextRenderer().getGlyphVector(
c.getOutputDevice(),
font,
inlineText.getSubstring());
Rectangle start = c.getTextRenderer().getGlyphBounds(
c.getOutputDevice(),
font,
glyphVector,
inlineText.getSelectionStart(),
iB.getAbsX() + inlineText.getX(),
iB.getAbsY() + iB.getBaseline());
Rectangle end = c.getTextRenderer().getGlyphBounds(
c.getOutputDevice(),
font,
glyphVector,
inlineText.getSelectionEnd() - 1,
iB.getAbsX() + inlineText.getX(),
iB.getAbsY() + iB.getBaseline());
Graphics2D graphics = getGraphics();
double scaleX = graphics.getTransform().getScaleX();
boolean allSelected = (text.length() == inlineText.getSelectionEnd()-inlineText.getSelectionStart());
int startX = (inlineText.getSelectionStart() == inlineText.getStart())?iB.getAbsX() + inlineText.getX():(int)Math.round(start.x/scaleX);
int endX = (allSelected)?startX+inlineText.getWidth():(int)Math.round((end.x + end.width)/scaleX);
_graphics.setColor(UIManager.getColor("TextArea.selectionBackground")); // FIXME
fillRect(
startX,
iB.getAbsY(),
endX - startX,
iB.getHeight());
_graphics.setColor(Color.WHITE); // FIXME
setFont(iB.getStyle().getFSFont(c));
drawSelectedText(c, inlineText, iB, glyphVector);
}
}
}
private void drawSelectedText(RenderingContext c, InlineText inlineText, InlineLayoutBox iB, FSGlyphVector glyphVector) {
GlyphVector vector = ((AWTFSGlyphVector)glyphVector).getGlyphVector();
// We'd like to draw only the characters that are actually selected, but
// unfortunately vector.getGlyphPixelBounds() doesn't give us accurate
// results with the result that text can appear to jump around as it's
// selected. To work around this, we draw the whole string, but move
// non-selected characters offscreen.
for (int i = 0; i < inlineText.getSelectionStart(); i++) {
vector.setGlyphPosition(i, new Point2D.Float(-100000, -100000));
}
for (int i = inlineText.getSelectionEnd(); i < inlineText.getSubstring().length(); i++) {
vector.setGlyphPosition(i, new Point2D.Float(-100000, -100000));
}
if(inlineText.getParent().getStyle().isTextJustify()) {
JustificationInfo info = inlineText.getParent().getLineBox().getJustificationInfo();
if(info!=null) {
String string = inlineText.getSubstring();
float adjust = 0.0f;
for (int i = inlineText.getSelectionStart(); i < inlineText.getSelectionEnd(); i++) {
char ch = string.charAt(i);
if (i != 0) {
Point2D point = vector.getGlyphPosition(i);
vector.setGlyphPosition(
i, new Point2D.Double(point.getX() + adjust, point.getY()));
}
if (ch == ' ' || ch == '\u00a0' || ch == '\u3000') {
adjust += info.getSpaceAdjust();
} else {
adjust += info.getNonSpaceAdjust();
}
}
}
}
c.getTextRenderer().drawGlyphVector(
c.getOutputDevice(),
glyphVector,
iB.getAbsX() + inlineText.getX(),
iB.getAbsY() + iB.getBaseline());
}
public void drawBorderLine(
Shape bounds, int side, int lineWidth, boolean solid) {
/* int x = bounds.x;
int y = bounds.y;
int w = bounds.width;
int h = bounds.height;
int adj = solid ? 1 : 0;
if (side == BorderPainter.TOP) {
drawLine(x, y + (int) (lineWidth / 2), x + w - adj, y + (int) (lineWidth / 2));
} else if (side == BorderPainter.LEFT) {
drawLine(x + (int) (lineWidth / 2), y, x + (int) (lineWidth / 2), y + h - adj);
} else if (side == BorderPainter.RIGHT) {
int offset = (int)(lineWidth / 2);
if (lineWidth % 2 != 0) {
offset += 1;
}
drawLine(x + w - offset, y, x + w - offset, y + h - adj);
} else if (side == BorderPainter.BOTTOM) {
int offset = (int)(lineWidth / 2);
if (lineWidth % 2 != 0) {
offset += 1;
}
drawLine(x, y + h - offset, x + w - adj, y + h - offset);
}*/
draw(bounds);
}
public void paintReplacedElement(RenderingContext c, BlockBox box) {
ReplacedElement replaced = box.getReplacedElement();
if (replaced instanceof SwingReplacedElement) {
Rectangle contentBounds = box.getContentAreaEdge(box.getAbsX(), box.getAbsY(), c);
JComponent component = ((SwingReplacedElement)box.getReplacedElement()).getJComponent();
RootPanel canvas = (RootPanel)c.getCanvas();
CellRendererPane pane = canvas.getCellRendererPane();
pane.paintComponent(_graphics, component, canvas, contentBounds.x, contentBounds.y, contentBounds.width, contentBounds.height,true);
} else if (replaced instanceof ImageReplacedElement) {
Image image = ((ImageReplacedElement)replaced).getImage();
Point location = replaced.getLocation();
_graphics.drawImage(
image, (int)location.getX(), (int)location.getY(), null);
}
}
public void setColor(FSColor color) {
if (color instanceof FSRGBColor) {
FSRGBColor rgb = (FSRGBColor)color;
_graphics.setColor(new Color(rgb.getRed(), rgb.getGreen(), rgb.getBlue()));
} else {
throw new RuntimeException("internal error: unsupported color class " + color.getClass().getName());
}
}
protected void drawLine(int x1, int y1, int x2, int y2) {
_graphics.drawLine(x1, y1, x2, y2);
}
public void drawRect(int x, int y, int width, int height) {
_graphics.drawRect(x, y, width, height);
}
public void fillRect(int x, int y, int width, int height) {
_graphics.fillRect(x, y, width, height);
}
public void setClip(Shape s) {
_graphics.setClip(s);
}
public Shape getClip() {
return _graphics.getClip();
}
public void clip(Shape s) {
_graphics.clip(s);
}
public void translate(double tx, double ty) {
_graphics.translate(tx, ty);
}
public Graphics2D getGraphics() {
return _graphics;
}
public void drawOval(int x, int y, int width, int height) {
_graphics.drawOval(x, y, width, height);
}
public void fillOval(int x, int y, int width, int height) {
_graphics.fillOval(x, y, width, height);
}
public Object getRenderingHint(Key key) {
return _graphics.getRenderingHint(key);
}
public void setRenderingHint(Key key, Object value) {
_graphics.setRenderingHint(key, value);
}
@Override
public void setFont(FSFont font) {
this._font = (AWTFSFont) font;
_graphics.setFont(this._font.getAWTFonts().get(0));
}
public AWTFSFont getFont() {
return this._font;
}
public void setStroke(Stroke s) {
_graphics.setStroke(s);
}
public Stroke getStroke() {
return _graphics.getStroke();
}
public void fill(Shape s) {
_graphics.fill(s);
}
public void draw(Shape s) {
_graphics.draw(s);
}
public void drawImage(FSImage image, int x, int y) {
_graphics.drawImage(((AWTFSImage)image).getImage(), x, y, null);
}
public boolean isSupportsSelection() {
return true;
}
public boolean isSupportsCMYKColors() {
return true;
}
@Override
public void drawWithGraphics(float x, float y, float width, float height, OutputDeviceGraphicsDrawer renderer) {
Graphics2D graphics = (Graphics2D) _graphics.create((int) x, (int) y, (int) width, (int) height);
renderer.render(graphics);
graphics.dispose();
}
private Stack transformStack = new Stack();
private Stack clipStack= new Stack();
@Override
public void setPaint(Paint paint) {
_graphics.setPaint(paint);
}
@Override
public void setAlpha(int alpha) {
// TODO Auto-generated method stub
}
@Override
public List pushTransforms(List transforms) {
// AffineTransform currentTransform = _graphics.getTransform();
// currentTransform.concatenate(transform);
// _graphics.setTransform(currentTransform);
// TODO
return Collections.emptyList();
}
@Override
public void popTransforms(List inverse) {
// TODO Auto-generated method stub
}
@Override
public float getAbsoluteTransformOriginX() {
// TODO Auto-generated method stub
return 0;
}
@Override
public float getAbsoluteTransformOriginY() {
// TODO Auto-generated method stub
return 0;
}
public void setBidiReorderer(BidiReorderer _reorderer) {
// TODO Auto-generated method stub
}
public void setRenderingContext(RenderingContext result) {
// TODO Auto-generated method stub
}
public void setRoot(BlockBox _root) {
// TODO Auto-generated method stub
}
public void initializePage(Graphics2D graphics2d) {
// TODO Auto-generated method stub
}
public void finish(RenderingContext c, BlockBox _root) {
// TODO Auto-generated method stub
}
}