Tesseract 3.02

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svshowim.cpp
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1 // Copyright 2006 Google Inc. All Rights Reserved.
2 // Author: <rays@google.com> (Ray Smith)
3 //
4
5 #ifdef HAVE_CONFIG_H
6 #include "config_auto.h"
7 #endif
8
9 #ifndef GRAPHICS_DISABLED
10 #include "allheaders.h"
11
12 #include "svshowim.h"
13 #include "scrollview.h"
14
15 // Override of a tesseract function to display an image in a window.
16 // This function redirects the display to ScrollView instead of the
17 // stubbed-out functions in tesseract.
18
19 void sv_show_sub_image(IMAGE* source, // Image to show.
20 inT32 xstart, // Start image coords.
21 inT32 ystart,
22 inT32 xext, // Size of rectangle to show.
23 inT32 yext,
24 ScrollView* window, // Window to draw in.
25 inT32 xpos, // Place to show bottom-left.
26 inT32 ypos) { // Y position.
27 Pix* pix;
28 if (xstart != 0 || ystart != 0 ||
29 xext != source->get_xsize() || yext != source->get_ysize()) {
30 IMAGE sub_im;
31 sub_im.create(xext, yext, source->get_bpp());
32 copy_sub_image(source, xstart, ystart, xext, yext, &sub_im, 0, 0, false);
33 pix = sub_im.ToPix();
34 } else {
35 pix = source->ToPix();
36 }
37 window->Image(pix, xpos, window->TranslateYCoordinate(yext) + ypos);
38 pixDestroy(&pix);
39 }
40
41 #endif // GRAPHICS_DISABLED
42