sysrap/tests/STTFTest.cc

0001
0002 /**
0003 STTFTest.cc
0004 =============
0005
0006 ~/o/sysrap/tests/STTFTest.sh
0007
0008 Note that SIMG.h now has annotation methods using
0009 an internal STTF instance, so most annotation does
0010 need to directly using STTF.h
0011
0012
0013 **/
0014
0015 #include <string>
0016 #include <sstream>
0017
0018 #include "spath.h"
0019 #include "ssys.h"
0020
0021 #define STTF_IMPLEMENTATION 1
0022 #include "STTF.h"
0023
0024 #define SIMG_IMPLEMENTATION 1
0025 #include "SIMG.h"
0026
0027
0028 std::string formTEXT()
0029 {
0030     double value = 1.23456789 ;
0031     std::stringstream ss ;
0032     ss << "the quick brown fox jumps over the lazy dog " ;
0033     ss << value  ;
0034     ss << std::endl ;   // <-- newline renders as an open rectangle
0035     ss << "the quick brown fox jumps over the lazy dog " ;
0036     ss << value  ;
0037
0038     std::string text = ss.str();
0039     return text ;
0040 }
0041
0042
0043 int main(int argc, char** argv)
0044 {
0045     const char* path = argc > 1 ? argv[1] : spath::Resolve("$TMP/STTFTest/STTFTest.jpg") ;
0046     std::string _text = formTEXT();
0047     const char* text = _text.c_str();
0048
0049     STTF* ttf = STTF::Create();
0050
0051
0052     int width = 1280;
0053     int height = 720;
0054     int channels = 4 ;
0055     int line_height = ssys::getenvint("LINE_HEIGHT", 32 ) ;
0056     int offset = 0 ;
0057
0058     printf("STTFTest line_height %d \n", line_height );
0059
0060     int magenta[4] = {255,0,255,0} ;
0061     int black[4] = {0,0,0,0} ;
0062
0063     unsigned char* data = (unsigned char*)calloc(width * height * channels, sizeof(unsigned char));
0064     ttf->render_background( data,        channels, width, height,      magenta ) ;
0065
0066     ttf->render_background( data+offset, channels, width, line_height, black ) ;
0067     ttf->render_text(       data+offset, channels, width, line_height, text ) ;
0068
0069     offset = width*height*channels/2 ;
0070     ttf->render_background( data+offset, channels, width, line_height, black ) ;
0071     ttf->render_text(       data+offset, channels, width, line_height, text ) ;
0072
0073     bool lowlevel = false ;
0074
0075     if( lowlevel )
0076     {
0077         offset = width*(height-line_height-1)*channels ;    // -1 to avoid stepping off the end and segmenting
0078         ttf->render_background( data+offset, channels, width, line_height, black ) ;
0079         ttf->render_text(       data+offset, channels, width, line_height, text ) ;
0080     }
0081     else
0082     {
0083         ttf->annotate( data , channels, width, height, line_height, text, true );
0084         ttf->annotate( data , channels, width, height, line_height, text, false );
0085     }
0086
0087
0088
0089
0090     SIMG img(width, height, channels, data );
0091
0092     int quality = 50 ;
0093     printf("STTFTest : writing to %s quality %d \n", path, quality );
0094     img.writeJPG(path, quality );
0095
0096     free(data);
0097
0098     return 0 ;
0099 }