Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/docs/examples/bbox-device.js @ 23:3b13504f9d89

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Use the official packaging.version.Version to parse version strings. While there revert the previons change to _int_rc(): it is not needed now.
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 12:40:07 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
1 function BBoxDevice(bbox) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
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2 function extend(x,y) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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3 if (x < bbox[0]) bbox[0] = x;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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4 if (x > bbox[2]) bbox[2] = x;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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5 if (y < bbox[1]) bbox[1] = y;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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6 if (y > bbox[3]) bbox[3] = y;
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7 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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8 function extendPoint(m, px, py) {
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9 var x = px * m[0] + py * m[2] + m[4];
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10 var y = px * m[1] + py * m[3] + m[5];
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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11 extend(x, y);
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12 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
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13 function extendRect(m, r) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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14 var x0 = r[0], y0 = r[1];
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15 var x1 = r[2], y1 = r[3];
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16 extendPoint(m, x0, y0);
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17 extendPoint(m, x1, y0);
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18 extendPoint(m, x0, y1);
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19 extendPoint(m, x1, y1);
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20 }
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21 function PathBounder(ctm) {
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22 return {
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23 moveTo: function (x,y) { extendPoint(ctm, x, y) },
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24 lineTo: function (x,y) { extendPoint(ctm, x, y) },
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25 curveTo: function (x1,y1,x2,y2,x3,y3) {
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26 extendPoint(ctm, x1, y1);
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27 extendPoint(ctm, x2, y2);
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28 extendPoint(ctm, x3, y3);
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29 },
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30 };
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31 }
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32 function TextBounder(ctm) {
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33 return {
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34 showGlyph: function (font,trm,gid,ucs,wmode,bidi) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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35 var bbox = [ 0, -0.2, font.advanceGlyph(gid, 0), 0.8 ];
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36 extendRect(Matrix.concat(trm, ctm), bbox);
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37 },
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38 };
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39 }
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40 return {
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41 fillPath: function (path, evenOdd, ctm, colorSpace, color, alpha) {
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42 path.walk(new PathBounder(ctm));
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43 },
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44 clipPath: function (path, evenOdd, ctm) {
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45 path.walk(new PathBounder(ctm));
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46 },
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47 strokePath: function (path, stroke, ctm, colorSpace, color, alpha) {
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48 path.walk(new PathBounder(ctm));
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49 },
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50 clipStrokePath: function (path, stroke, ctm) {
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51 path.walk(new PathBounder(ctm));
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52 },
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53 fillText: function (text, ctm, colorSpace, color, alpha) {
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54 text.walk(new TextBounder(ctm));
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55 },
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56 clipText: function (text, ctm) {
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57 text.walk(new TextBounder(ctm));
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58 },
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59 strokeText: function (text, stroke, ctm, colorSpace, color, alpha) {
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60 text.walk(new TextBounder(ctm));
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61 },
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62 clipStrokeText: function (text, stroke, ctm) {
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63 text.walk(new TextBounder(ctm));
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64 },
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65 ignoreText: function (text, ctm) {
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66 text.walk(new TextBounder(ctm));
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67 },
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68 fillShade: function (shade, ctm, alpha) {
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69 var bbox = shade.getBounds(ctm);
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70 extend(bbox[0], bbox[1]);
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71 extend(bbox[2], bbox[3]);
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72 },
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73 fillImage: function (image, ctm, alpha) {
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74 extendRect(ctm, [0,0,1,1]);
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75 },
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76 fillImageMask: function (image, ctm, colorSpace, color, alpha) {
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77 extendRect(ctm, [0,0,1,1]);
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78 },
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79 };
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80 }
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81
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82 if (scriptArgs.length != 2)
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83 print("usage: mutool run bbox-device.js document.pdf pageNumber")
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84 else {
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85 var doc = Document.openDocument(scriptArgs[0]);
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86 var page = doc.loadPage(parseInt(scriptArgs[1])-1);
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87 var bbox = [Infinity, Infinity, -Infinity, -Infinity];
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88 page.run(new BBoxDevice(bbox), Matrix.identity);
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89 print("original bbox:", page.getBounds());
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90 print("computed bbox:", bbox.map(function (x) { return Math.round(x); }));
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91 }