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- /*
- * Copyright 1999-2005 The Apache Software Foundation.
- *
- * Licensed 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.awt;
-
- /*
- * originally contributed by
- * Juergen Verwohlt: Juergen.Verwohlt@jCatalog.com,
- * Rainer Steinkuhle: Rainer.Steinkuhle@jCatalog.com,
- * Stanislav Gorkhover: Stanislav.Gorkhover@jCatalog.com
- */
-
- // Java
- import java.awt.Dimension;
- import java.awt.geom.Rectangle2D;
- import java.awt.Toolkit;
- import java.awt.event.WindowAdapter;
- import java.awt.event.WindowEvent;
- import java.awt.print.PageFormat;
- import java.awt.print.Pageable;
- import java.awt.print.Paper;
- import java.awt.print.Printable;
- import java.io.IOException;
-
- import org.apache.fop.apps.FOPException;
- import org.apache.fop.apps.FOUserAgent;
- import org.apache.fop.apps.MimeConstants;
- import org.apache.fop.area.Area;
- import org.apache.fop.area.PageViewport;
- import org.apache.fop.datatypes.ColorType;
- import org.apache.fop.fo.properties.ColorTypeProperty;
- import org.apache.fop.render.awt.viewer.PreviewDialog;
- import org.apache.fop.render.awt.viewer.Renderable;
- import org.apache.fop.render.awt.viewer.Translator;
- import org.apache.fop.render.java2d.Java2DRenderer;
-
- /**
- * The AWTRender outputs the pages generated by the layout engine to a Swing
- * window. This Swing window serves as default viewer for the -awt switch and as
- * an example of how to embed the AWTRenderer into an AWT/Swing application.
- */
- public class AWTRenderer extends Java2DRenderer implements Pageable {
-
- /** The MIME type for AWT-Rendering */
- public static final String MIME_TYPE = MimeConstants.MIME_FOP_AWT_PREVIEW;
-
- /** The resource bundle used for AWT messages. */
- protected Translator translator = null;
-
- /** flag for debugging */
- public boolean debug;
-
- /** If true, preview dialog is shown. */
- public boolean dialogDisplay = true;
-
- /**
- * The preview dialog frame used for display of the documents. Also used as
- * the AWT Component for FontSetup in generating valid font measures.
- */
- protected PreviewDialog frame;
-
- /**
- * Renderable instance that can be used to reload and re-render a document after
- * modifications.
- */
- protected Renderable renderable;
-
- /**
- * Creates a new AWTRenderer instance.
- */
- public AWTRenderer() {
- translator = new Translator();
- }
-
- /** @see org.apache.fop.render.Renderer#setUserAgent(org.apache.fop.apps.FOUserAgent) */
- public void setUserAgent(FOUserAgent foUserAgent) {
- super.setUserAgent(foUserAgent);
- if (dialogDisplay) {
- createPreviewDialog();
- }
- }
-
- /**
- * A Renderable instance can be set so the Preview Dialog can enable the "Reload" button
- * which causes the current document to be reprocessed and redisplayed.
- * @param renderable the Renderable instance.
- */
- public void setRenderable(Renderable renderable) {
- this.renderable = renderable;
- }
-
- /**
- * Sets whether the preview dialog should be created and displayed when
- * the rendering is finished.
- * @param show If false, preview dialog is not shown. True by default
- */
- public void setPreviewDialogDisplayed(boolean show) {
- dialogDisplay = show;
- }
-
- /** @see org.apache.fop.render.Renderer#renderPage(org.apache.fop.area.PageViewport) */
- public void renderPage(PageViewport pageViewport)
- throws IOException, FOPException {
-
- super.renderPage(pageViewport);
- if (frame != null) {
- frame.setInfo();
- }
- }
-
- /** @see org.apache.fop.render.Renderer#stopRenderer() */
- public void stopRenderer() throws IOException {
- super.stopRenderer();
- if (frame != null) {
- frame.setStatus(translator.getString("Status.Show"));
- frame.reload(); // Refreshes view of page
- }
- }
-
- /**
- * @return the dimensions of the specified page
- * @param pageNum the page number
- * @exception FOPException If the page is out of range or has not been rendered.
- */
- public Dimension getPageImageSize(int pageNum) throws FOPException {
- Rectangle2D bounds = getPageViewport(pageNum).getViewArea();
- pageWidth = (int) Math.round(bounds.getWidth() / 1000f);
- pageHeight = (int) Math.round(bounds.getHeight() / 1000f);
- double scaleX = scaleFactor
- * (25.4 / FOUserAgent.DEFAULT_TARGET_RESOLUTION)
- / userAgent.getTargetPixelUnitToMillimeter();
- double scaleY = scaleFactor
- * (25.4 / FOUserAgent.DEFAULT_TARGET_RESOLUTION)
- / userAgent.getTargetPixelUnitToMillimeter();
- int bitmapWidth = (int) ((pageWidth * scaleX) + 0.5);
- int bitmapHeight = (int) ((pageHeight * scaleY) + 0.5);
- return new Dimension(bitmapWidth, bitmapHeight);
- }
-
- /** Creates and initialize the AWT Viewer main window */
- private PreviewDialog createPreviewDialog() {
- frame = new PreviewDialog(userAgent, this.renderable);
- frame.addWindowListener(new WindowAdapter() {
- public void windowClosed(WindowEvent we) {
- System.exit(0);
- }
- });
-
- // Centers the window
- Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
- Dimension frameSize = frame.getSize();
- if (frameSize.height > screenSize.height) {
- frameSize.height = screenSize.height;
- }
- if (frameSize.width > screenSize.width) {
- frameSize.width = screenSize.width;
- }
- frame.setLocation((screenSize.width - frameSize.width) / 2,
- (screenSize.height - frameSize.height) / 2);
- frame.setStatus(translator.getString("Status.Build.FO.tree"));
- frame.setVisible(true);
- return frame;
- }
-
- /** @see java.awt.print.Pageable#getPageFormat(int) */
- public PageFormat getPageFormat(int pageIndex)
- throws IndexOutOfBoundsException {
- try {
- if (pageIndex >= getNumberOfPages()) {
- return null;
- }
-
- PageFormat pageFormat = new PageFormat();
-
- Paper paper = new Paper();
- pageFormat.setPaper(paper);
-
- Rectangle2D dim = getPageViewport(pageIndex).getViewArea();
- double width = dim.getWidth();
- double height = dim.getHeight();
-
- // if the width is greater than the height assume lanscape mode
- // and swap the width and height values in the paper format
- if (width > height) {
- paper.setImageableArea(0, 0, height / 1000d, width / 1000d);
- paper.setSize(height / 1000d, width / 1000d);
- pageFormat.setOrientation(PageFormat.LANDSCAPE);
- } else {
- paper.setImageableArea(0, 0, width / 1000d, height / 1000d);
- paper.setSize(width / 1000d, height / 1000d);
- pageFormat.setOrientation(PageFormat.PORTRAIT);
- }
- return pageFormat;
- } catch (FOPException fopEx) {
- throw new IndexOutOfBoundsException(fopEx.getMessage());
- }
- }
-
- /** @see java.awt.print.Pageable#getPrintable(int) */
- public Printable getPrintable(int pageIndex)
- throws IndexOutOfBoundsException {
- return this;
- }
-
- /** @see org.apache.fop.render.Renderer */
- public boolean supportsOutOfOrder() {
- return true; // TODO true?
- }
-
- /** @return the Translator for this renderer */
- public Translator getTranslator() {
- return translator;
- }
-
- /** @see org.apache.fop.render.AbstractRenderer */
- public String getMimeType() {
- return MIME_TYPE;
- }
-
- /**
- * Draws the background and borders and adds a basic debug view // TODO
- * implement visual-debugging as standalone
- *
- * @see org.apache.fop.render.java2d.Java2DRenderer#drawBackAndBorders(org.apache.fop.area.Area,
- * float, float, float, float)
- *
- * @param area the area to get the traits from
- * @param startx the start x position
- * @param starty the start y position
- * @param width the width of the area
- * @param height the height of the area
- */
- protected void drawBackAndBorders(Area area, float startx, float starty,
- float width, float height) {
-
- if (debug) {
- debugBackAndBorders(area, startx, starty, width, height);
- }
-
- super.drawBackAndBorders(area, startx, starty, width, height);
- }
-
- /** Draws a thin border around every area to help debugging */
- private void debugBackAndBorders(Area area, float startx, float starty,
- float width, float height) {
-
- // saves the graphics state in a stack
- state.push();
-
- ColorType ct = new ColorTypeProperty(0.7f, 0.7f, 0.7f);
- state.updateColor(ct, true, null);
- state.updateStroke(0.4f, EN_SOLID);
- state.getGraph().draw(
- new Rectangle2D.Float(startx, starty, width, height));
-
- // restores the last graphics state from the stack
- state.pop();
- }
- }
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