Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/platform/java/example/PageCanvas.java @ 21:2f43e400f144

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Provide an "all" target to build both the sdist and the wheel
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 10:28:53 +0200
parents b50eed0cc0ef
children
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1 // Copyright (C) 2004-2022 Artifex Software, Inc.
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2 //
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3 // This file is part of MuPDF.
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4 //
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5 // MuPDF is free software: you can redistribute it and/or modify it under the
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6 // terms of the GNU Affero General Public License as published by the Free
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7 // Software Foundation, either version 3 of the License, or (at your option)
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8 // any later version.
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9 //
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10 // MuPDF is distributed in the hope that it will be useful, but WITHOUT ANY
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11 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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12 // FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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13 // details.
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14 //
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15 // You should have received a copy of the GNU Affero General Public License
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16 // along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
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17 //
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18 // Alternative licensing terms are available from the licensor.
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19 // For commercial licensing, see <https://www.artifex.com/> or contact
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20 // Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
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21 // CA 94129, USA, for further information.
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23 package example;
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25 import com.artifex.mupdf.fitz.*;
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27 import java.awt.*;
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28 import java.awt.event.*;
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29 import java.awt.image.*;
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31 public class PageCanvas extends Canvas
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32 {
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33 protected float pixelScale;
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34 protected BufferedImage image;
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35 protected Rect[] links;
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36 protected Quad[][] hits;
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38 public PageCanvas(float pixelScale) {
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39 this.pixelScale = pixelScale;
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40 }
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42 public void setPage(BufferedImage image, Rect[] links, Quad[][] hits) {
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43 this.image = image;
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44 this.links = links;
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45 this.hits = hits;
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46 repaint();
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47 }
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49 public Dimension getPreferredSize() {
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50 if (image == null)
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51 return new Dimension(600, 700);
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53 return new Dimension(image.getWidth(), image.getHeight());
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54 }
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56 public void paint(Graphics g) {
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57 if (image == null)
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58 return;
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60 float imageScale = 1 / pixelScale;
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61 final Graphics2D g2d = (Graphics2D)g.create(0, 0, image.getWidth(), image.getHeight());
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62 g2d.scale(imageScale, imageScale);
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63 g2d.drawImage(image, 0, 0, null);
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64
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65 if (hits != null) {
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66 g2d.setColor(new Color(1, 0, 0, 0.4f));
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68 for (Quad[] hit : hits)
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69 for (Quad q : hit) {
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70 int[] x = new int[]{(int)q.ul_x, (int)q.ur_x, (int)q.lr_x, (int)q.ll_x };
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71 int[] y = new int[]{(int)q.ul_y, (int)q.ur_y, (int)q.lr_y, (int)q.ll_y };
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72 g2d.fillPolygon(x, y, 4);
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73 }
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74 }
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75
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76 if (links != null) {
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77 g2d.setColor(new Color(0, 0, 1, 0.1f));
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78 for (Rect link : links)
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79 g2d.fillRect((int)link.x0, (int)link.y0, (int)(link.x1-link.x0), (int)(link.y1-link.y0));
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80 }
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81
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82 g2d.dispose();
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83 }
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84
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85 public Dimension getMinimumSize() { return getPreferredSize(); }
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86 public Dimension getMaximumSize() { return getPreferredSize(); }
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87 public void update(Graphics g) { paint(g); }
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88 }