Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/docs/examples/bbox-device.js @ 25:575f70dbc259

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Do not expose local directory names in mupdf_location in _build.py.
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 18:20:23 +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>
parents:
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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;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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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];
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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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 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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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 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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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 }