FreeTypeGL-0.0.1: src/demo/demo-markup.c
/* ============================================================================
* Freetype GL - A C OpenGL Freetype engine
* Platform: Any
* WWW: http://code.google.com/p/freetype-gl/
* ----------------------------------------------------------------------------
* Copyright 2011,2012 Nicolas P. Rougier. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY NICOLAS P. ROUGIER ''AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL NICOLAS P. ROUGIER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are
* those of the authors and should not be interpreted as representing official
* policies, either expressed or implied, of Nicolas P. Rougier.
* ============================================================================
*
* Example demonstrating markup usage
*
* ============================================================================
*/
#include <fontconfig/fontconfig.h>
#include "freetype-gl.h"
#include "font-manager.h"
#include "vertex-buffer.h"
#include "text-buffer.h"
#include "markup.h"
#include "shader.h"
// ------------------------------------------------------- global variables ---
text_buffer_t * buffer;
// ------------------------------------------------------ match_description ---
char *
match_description( char * family, float size, int bold, int italic )
{
#if defined _WIN32 || defined _WIN64
fprintf( stderr, "\"font_manager_match_description\" "
"not implemented for windows.\n" );
return 0;
#endif
char *filename = 0;
int weight = FC_WEIGHT_REGULAR;
int slant = FC_SLANT_ROMAN;
if ( bold )
{
weight = FC_WEIGHT_BOLD;
}
if( italic )
{
slant = FC_SLANT_ITALIC;
}
FcInit();
FcPattern *pattern = FcPatternCreate();
FcPatternAddDouble( pattern, FC_SIZE, size );
FcPatternAddInteger( pattern, FC_WEIGHT, weight );
FcPatternAddInteger( pattern, FC_SLANT, slant );
FcPatternAddString( pattern, FC_FAMILY, (FcChar8*) family );
FcConfigSubstitute( 0, pattern, FcMatchPattern );
FcDefaultSubstitute( pattern );
FcResult result;
FcPattern *match = FcFontMatch( 0, pattern, &result );
FcPatternDestroy( pattern );
if ( !match )
{
fprintf( stderr, "fontconfig error: could not match family '%s'", family );
return 0;
}
else
{
FcValue value;
FcResult result = FcPatternGet( match, FC_FILE, 0, &value );
if ( result )
{
fprintf( stderr, "fontconfig error: could not match family '%s'", family );
}
else
{
filename = strdup( (char *)(value.u.s) );
}
}
FcPatternDestroy( match );
return filename;
}
// ---------------------------------------------------------------- display ---
void display( void )
{
glClearColor(0.40,0.40,0.45,1.00);
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
text_buffer_render( buffer );
glutSwapBuffers( );
}
// --------------------------------------------------------------- reshape ---
void reshape(int width, int height)
{
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, width, 0, height, -1, 1);
glMatrixMode(GL_MODELVIEW);
glutPostRedisplay();
}
// --------------------------------------------------------------- keyboard ---
void keyboard( unsigned char key, int x, int y )
{
if ( key == 27 )
{
exit( EXIT_SUCCESS );
}
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
glutInit( &argc, argv );
glutInitWindowSize( 500, 220 );
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutCreateWindow( argv[0] );
glutReshapeFunc( reshape );
glutDisplayFunc( display );
glutKeyboardFunc( keyboard );
ivec2 atlas_size = {{ 512, 512 }};
buffer = text_buffer_new( &atlas_size, LCD_FILTERING_ON );
vec4 black = {{0.0, 0.0, 0.0, 1.0}};
vec4 white = {{1.0, 1.0, 1.0, 1.0}};
vec4 yellow = {{1.0, 1.0, 0.0, 1.0}};
vec4 grey = {{0.5, 0.5, 0.5, 1.0}};
vec4 none = {{1.0, 1.0, 1.0, 0.0}};
char *f_normal = match_description("Droid Serif", 24, 0, 0);
char *f_bold = match_description("Droid Serif", 24, 1, 0);
char *f_italic = match_description("Droid Serif", 24, 0, 1);
char *f_japanese = match_description("Droid Sans Japanese", 18, 0, 0);
char *f_math = match_description("DejaVu Sans", 24, 0, 0);
markup_t normal = {
.family = f_normal,
.size = 24.0, .bold = 0, .italic = 0,
.rise = 0.0, .spacing = 0.0, .gamma = 1.5,
.foreground_color = white, .background_color = none,
.underline = 0, .underline_color = white,
.overline = 0, .overline_color = white,
.strikethrough = 0, .strikethrough_color = white,
.font = 0,
};
markup_t highlight = normal; highlight.background_color = grey;
markup_t reverse = normal; reverse.foreground_color = black;
reverse.background_color = white;
reverse.gamma = 1.0;
markup_t overline = normal; overline.overline = 1;
markup_t underline = normal; underline.underline = 1;
markup_t small = normal; small.size = 10.0;
markup_t big = normal; big.size = 48.0;
big.italic = 1;
big.foreground_color = yellow;
markup_t bold = normal; bold.bold = 1; bold.family = f_bold;
markup_t italic = normal; italic.italic = 1; italic.family = f_italic;
markup_t japanese = normal; japanese.family = f_japanese;
japanese.size = 18.0;
markup_t math = normal; math.family = f_math;
vec2 pen = {{20, 200}};
text_buffer_printf( buffer, &pen,
&underline, L"The",
&normal, L" Quick",
&big, L" brown ",
&reverse, L" fox \n",
&italic, L"jumps over ",
&bold, L"the lazy ",
&normal, L"dog.\n",
&small, L"Now is the time for all good men "
L"to come to the aid of the party.\n",
&italic, L"Ég get etið gler án þess að meiða mig.\n",
&japanese, L"私はガラスを食べられます。 それは私を傷つけません\n",
&math, L"ℕ ⊆ ℤ ⊂ ℚ ⊂ ℝ ⊂ ℂ", NULL );
glutMainLoop( );
return 0;
}