/****************************************************************************/ /* */ /* The FreeType project -- a free and portable quality TrueType renderer. */ /* */ /* Copyright 1996-1999 by */ /* D. Turner, R.Wilhelm, and W. Lemberg */ /* */ /* ftview: A simple font viewer. Now supports hinting and grayscaling */ /* with the '-g' option. */ /* */ /* */ /* Keys: */ /* */ /* x : fine counter-clockwise rotation */ /* c : fine clockwise rotation */ /* */ /* v : fast counter-clockwise rotation */ /* b : fast clockwise rotation */ /* */ /* + : fast scale up */ /* - : fast scale down */ /* u : fine scale down */ /* j : fine scale up */ /* */ /* l : go to next glyph */ /* k : go to previous glyph */ /* */ /* o : go to tenth next glyph */ /* i : go to tenth previous glyph */ /* */ /* 0 : go to hundredth next glyph */ /* 9 : go to hundredth previous glyph */ /* */ /* ) : go to 1000th next glyph */ /* ( : go to 1000th previous glyph */ /* */ /* } : go to 10000th next glyph */ /* { : go to 10000th previous glyph */ /* */ /* n : go to next (or last) .ttf file */ /* p : go to previous (or first) .ttf file */ /* */ /* h : toggle hinting */ /* */ /* B : toggle sbit */ /* */ /* ESC : exit */ /* */ /* */ /* NOTE: This is just a test program that is used to show off and */ /* debug the current engine. */ /* */ /****************************************************************************/ #include #include #include #include "blitter.h" #include "common.h" /* for Panic() only */ #include "display.h" #include "freetype.h" #include "ftxsbit.h" #include "gdriver.h" #include "gevents.h" #include "gmain.h" #define Pi 3.1415926535 #define MAXPTSIZE 500 /* dtp */ #define Center_X ( Bit.width / 2 ) /* dtp */ #define Center_Y ( Bit.rows / 2 ) /* dtp */ /* * If Ignore_Err_Not_SBit is not defined, * "Fail" increase when the glyph does not have sbit and * sbit_flag is 1. */ #define Ignore_Err_Not_SBit 1 char Header[128]; TT_Engine engine; TT_Face face; TT_Instance instance; TT_Glyph glyph; TT_CharMap char_map; TT_Big_Glyph_Metrics metrics; TT_Outline outline; TT_Face_Properties properties; TT_Instance_Metrics imetrics; TT_SBit_Image* sbit; int num_glyphs; int ptsize; int hinted; int Rotation; int Fail; int Num; unsigned char autorun; int gray_render; unsigned int sbit_flag; /* 0 if to display outlines * 1 if to use embedded bitmaps * 2 if to show sbit and outline glyphs */ int glyph_has_sbit; static TT_Error Reset_Scale( int pointSize ) { TT_Error error; TT_SBit_Strike strike; if ( (error = TT_Set_Instance_PointSize( instance, pointSize )) ) { RestoreScreen(); fprintf( stderr, "Error = 0x%x.\n", (int)error ); Panic( "Could not reset instance.\n" ); } TT_Get_Instance_Metrics( instance, &imetrics ); /* now re-allocates the small bitmap */ if ( gray_render ) { Init_Small( imetrics.x_ppem, imetrics.y_ppem ); Clear_Small(); } if ( TT_Get_SBit_Strike( face, instance, &strike ) ) glyph_has_sbit = 0; else glyph_has_sbit = 1; return TT_Err_Ok; } static TT_Error LoadTrueTypeChar( int idx, int hint ) { int flags; flags = TTLOAD_SCALE_GLYPH; if ( hint ) flags |= TTLOAD_HINT_GLYPH; return TT_Load_Glyph( instance, glyph, idx, flags ); } static TT_Error Render_All( int first_glyph, int ptsize ) { TT_F26Dot6 start_x, start_y, step_x, step_y, x, y; int i; TT_Error error = 0; start_x = 4; start_y = vio_Height - ( ( ptsize * 96 + 36 ) / 72 + 10 ); step_x = imetrics.x_ppem + 4; step_y = imetrics.y_ppem + 10; x = start_x; y = start_y; i = first_glyph; while ( i < num_glyphs ) { if ( ( glyph_has_sbit ) && ( ( sbit_flag + 1 ) & 2 ) && !(error = TT_Load_Glyph_Bitmap( face, instance, i, sbit )) ) { Blit_Bitmap( &Bit, &sbit->map, gray_render ? 8 : 1, x + (sbit->metrics.horiBearingX/64), Bit.rows - y - (sbit->metrics.horiBearingY/64), gray_palette[4] ); metrics = sbit->metrics; goto Step; } if ( ( ( !glyph_has_sbit ) || ( ( sbit_flag + 1 ) & 1 ) ) && !(error = LoadTrueTypeChar( i, hinted )) ) { TT_Get_Glyph_Outline( glyph, &outline ); TT_Get_Glyph_Big_Metrics( glyph, &metrics ); Render_Single_Glyph( gray_render, glyph, x, y ); } else { #ifdef Ignore_Err_Not_SBit if (!(( glyph_has_sbit ) && ( sbit_flag == 1 ) && ( error == TT_Err_Invalid_Glyph_Index ))) #endif Fail++; } Step: x += ( metrics.horiAdvance / 64 ) + 1; if ( x + imetrics.x_ppem > vio_Width ) { x = start_x; y -= step_y; if ( y < 10 ) return TT_Err_Ok; } i++; } return TT_Err_Ok; } static int Process_Event( TEvent* event ) { switch ( event->what ) { case event_Quit: /* ESC or q */ return 0; case event_Keyboard: if ( event->info == 'n' ) /* Next file */ return 'n'; if ( event->info == 'p' ) /* Previous file */ return 'p'; if ( event->info == 'h' ) /* Toggle hinting */ hinted = !hinted; if ( ( event->info == 'B' ) && ( glyph_has_sbit ) ) /* Toggle sbit */ sbit_flag = ( sbit_flag + 1 ) % 3; break; case event_Rotate_Glyph: Rotation = ( Rotation + event->info ) & 1023; break; case event_Scale_Glyph: ptsize += event->info; if ( ptsize < 1 ) ptsize = 1; if ( ptsize > MAXPTSIZE ) ptsize = MAXPTSIZE; break; case event_Change_Glyph: Num += event->info; if ( Num < 0 ) Num = 0; if ( Num >= num_glyphs ) Num = num_glyphs - 1; break; } return 1; } static void usage( char* execname ) { fprintf( stderr, "\n" ); fprintf( stderr, "ftview: simple TrueType interpreter tester -- part of the FreeType project\n" ); fprintf( stderr, "--------------------------------------------------------------------------\n" ); fprintf( stderr, "\n" ); fprintf( stderr, "Usage: %s [options below] ppem fontname[.ttf|.ttc] ...\n", execname ); fprintf( stderr, "\n" ); fprintf( stderr, " -g gray-level rendering (default: none)\n" ); fprintf( stderr, " -r R use resolution R dpi (default: 96)\n" ); fprintf( stderr, " -B use embedded bitmaps (default: none)\n" ); fprintf( stderr, "\n" ); exit( EXIT_FAILURE ); } int main( int argc, char** argv ) { int i, old_ptsize, orig_ptsize, file; int XisSetup = 0; char filename[128 + 4]; char alt_filename[128 + 4]; char* execname; int option; int res = 96; TT_Error error; TEvent event; TT_EBLC eblc_table; execname = ft_basename( argv[0] ); while ( 1 ) { option = ft_getopt( argc, argv, "gr:B" ); if ( option == -1 ) break; switch ( option ) { case 'g': gray_render = 1; sbit_flag = 0; break; case 'r': res = atoi( ft_optarg ); if ( res < 1 ) usage( execname ); break; case 'B': if (!gray_render) #if 0 sbit_flag = 1; #else sbit_flag = 2; #endif break; default: usage( execname ); break; } } argc -= ft_optind; argv += ft_optind; if ( argc <= 1 ) usage( execname ); if ( sscanf( argv[0], "%d", &orig_ptsize ) != 1 ) orig_ptsize = 64; file = 1; /* Initialize engine */ if ( (error = TT_Init_FreeType( &engine )) ) Panic( "Error while initializing engine, code = 0x%x.\n", error ); if ( (error = TT_Init_SBit_Extension( engine )) ) Panic( "Error while initializing sbit extention, code = 0x%x.\n", error ); NewFile: ptsize = orig_ptsize; hinted = 1; i = strlen( argv[file] ); while ( i > 0 && argv[file][i] != '\\' && argv[file][i] != '/' ) { if ( argv[file][i] == '.' ) i = 0; i--; } filename[128] = '\0'; alt_filename[128] = '\0'; strncpy( filename, argv[file], 128 ); strncpy( alt_filename, argv[file], 128 ); if ( i >= 0 ) { strncpy( filename + strlen( filename ), ".ttf", 4 ); strncpy( alt_filename + strlen( alt_filename ), ".ttc", 4 ); } /* Load face */ error = TT_Open_Face( engine, filename, &face ); if ( error == TT_Err_Could_Not_Open_File ) { strcpy( filename, alt_filename ); error = TT_Open_Face( engine, alt_filename, &face ); } if ( error == TT_Err_Could_Not_Open_File ) Panic( "Could not find/open %s.\n", filename ); else if ( error ) Panic( "Error while opening %s, code = 0x%x.\n", filename, error ); /* get face properties and allocate preload arrays */ TT_Get_Face_Properties( face, &properties ); num_glyphs = properties.num_Glyphs; glyph_has_sbit = 0; error = TT_Get_Face_Bitmaps( face, &eblc_table ); if ( error == TT_Err_Ok ) glyph_has_sbit = 1; if ( sbit_flag && !glyph_has_sbit ) Panic( "%s does not have embedded bitmap glyphs.\n", filename ); /* create glyph */ error = TT_New_Glyph( face, &glyph ); if ( error ) Panic( "Could not create glyph container.\n" ); error = TT_New_SBit_Image( &sbit ); if ( error ) Panic( "Could not create sbit slot.\n" ); /* create instance */ error = TT_New_Instance( face, &instance ); if ( error ) Panic( "Could not create instance for %s.\n", filename ); error = TT_Set_Instance_Resolutions( instance, res, res ); if ( error ) Panic( "Could not set device resolutions." ); if ( !XisSetup ) { XisSetup = 1; if ( gray_render ) { if ( !SetGraphScreen( Graphics_Mode_Gray ) ) Panic( "Could not set up grayscale graphics mode.\n" ); TT_Set_Raster_Gray_Palette( engine, virtual_palette ); } else { if ( !SetGraphScreen( Graphics_Mode_Mono ) ) Panic( "Could not set up mono graphics mode.\n" ); } } Init_Display( gray_render ); Reset_Scale( ptsize ); old_ptsize = ptsize; Fail = 0; Num = 0; for ( ;; ) { int key; char* sbit_string; static char* sbit_messages[4] = { "off", "on", " if available", "NONE" }; sbit_string = sbit_messages[3]; if ( glyph_has_sbit ) { if (sbit_flag >= 0 && sbit_flag < 3) sbit_string = sbit_messages[sbit_flag]; } Clear_Display(); Render_All( Num, ptsize ); if ( gray_render ) Convert_To_Display_Palette(); sprintf( Header, "%s: Glyph: %4d ptsize: %4d hinting: %s sbit: %s", ft_basename( filename ), Num, ptsize, hinted ? "on" : "off", sbit_string ); Display_Bitmap_On_Screen( Bit.bitmap, Bit.rows, Bit.cols ); #ifndef X11 #ifndef OS2 Print_XY( 0, 0, Header ); #endif #endif Get_Event( &event ); if ( !( key = Process_Event( &event ) ) ) goto End; if ( key == 'n' ) { TT_Close_Face( face ); if ( file < argc - 1 ) file++; goto NewFile; } if ( key == 'p' ) { TT_Close_Face( face ); if ( file > 1 ) file--; goto NewFile; } if ( ptsize != old_ptsize ) { if ( Reset_Scale( ptsize ) ) Panic( "Could not resize font.\n" ); old_ptsize = ptsize; } } End: RestoreScreen(); TT_Done_FreeType( engine ); printf( "Execution completed successfully.\n" ); printf( "Fails = %d\n", Fail ); exit( EXIT_SUCCESS ); /* for safety reasons */ return 0; /* never reached */ } /* End */