Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/ccstruct/debugpixa.h @ 41:71bcc18e306f

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MERGE: New upstream PyMuPDF v1.26.5 including MuPDF v1.26.10 BUGS: Needs some additional changes yet. Not yet tested.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 15:24:40 +0200
parents b50eed0cc0ef
children
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1 #ifndef TESSERACT_CCSTRUCT_DEBUGPIXA_H_
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2 #define TESSERACT_CCSTRUCT_DEBUGPIXA_H_
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4 #include "image.h"
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6 #include <allheaders.h>
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8 namespace tesseract {
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10 // Class to hold a Pixa collection of debug images with captions and save them
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11 // to a PDF file.
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12 class DebugPixa {
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13 public:
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14 // TODO(rays) add another constructor with size control.
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15 DebugPixa() {
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16 pixa_ = pixaCreate(0);
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17 #ifdef TESSERACT_DISABLE_DEBUG_FONTS
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18 fonts_ = NULL;
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19 #else
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20 fonts_ = bmfCreate(nullptr, 14);
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21 #endif
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22 }
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23 // If the filename_ has been set and there are any debug images, they are
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24 // written to the set filename_.
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25 ~DebugPixa() {
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26 pixaDestroy(&pixa_);
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27 bmfDestroy(&fonts_);
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28 }
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30 // Adds the given pix to the set of pages in the PDF file, with the given
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31 // caption added to the top.
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32 void AddPix(const Image pix, const char *caption) {
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33 int depth = pixGetDepth(pix);
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34 int color = depth < 8 ? 1 : (depth > 8 ? 0x00ff0000 : 0x80);
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35 Image pix_debug =
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36 pixAddSingleTextblock(pix, fonts_, caption, color, L_ADD_BELOW, nullptr);
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37 pixaAddPix(pixa_, pix_debug, L_INSERT);
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38 }
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40 // Sets the destination filename and enables images to be written to a PDF
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41 // on destruction.
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42 void WritePDF(const char *filename) {
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43 if (pixaGetCount(pixa_) > 0) {
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44 pixaConvertToPdf(pixa_, 300, 1.0f, 0, 0, "AllDebugImages", filename);
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45 pixaClear(pixa_);
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46 }
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47 }
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49 private:
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50 // The collection of images to put in the PDF.
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51 Pixa *pixa_;
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52 // The fonts used to draw text captions.
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53 L_Bmf *fonts_;
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54 };
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56 } // namespace tesseract
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58 #endif // TESSERACT_CCSTRUCT_DEBUGPIXA_H_