static void
event_help( void )
{
grEvent dummy_event;
FTDemo_Display_Clear( display );
grSetLineHeight( 10 );
grGotoxy( 0, 0 );
grSetMargin( 2, 1 );
grGotobitmap( display->bitmap );
grWriteln( "FreeType String Viewer - part of the FreeType test suite" );
grLn();
grWriteln( "This program is used to display a string of text using" );
grWriteln( "the new convenience API of the FreeType 2 library." );
grLn();
grWriteln( "Use the following keys :" );
grLn();
grWriteln( " F1 or ? : display this help screen" );
grLn();
grWriteln( " a : toggle anti-aliasing" );
grWriteln( " b : toggle embedded bitmaps (and disable rotation)" );
grWriteln( " f : toggle forced auto-hinting" );
grWriteln( " h : toggle outline hinting" );
grLn();
grWriteln( " 1-2 : select rendering mode" );
grWriteln( " k : cycle through kerning modes" );
grWriteln( " t : cycle through kerning degrees" );
grWriteln( " V : toggle vertical rendering" );
grLn();
grWriteln( " G : toggle gamma correction" );
grWriteln( " g : increase gamma by 0.1" );
grWriteln( " v : decrease gamma by 0.1" );
grLn();
grWriteln( " n : next font" );
grWriteln( " p : previous font" );
grLn();
grWriteln( " Up : increase pointsize by 1 unit" );
grWriteln( " Down : decrease pointsize by 1 unit" );
grWriteln( " Page Up : increase pointsize by 10 units" );
grWriteln( " Page Down : decrease pointsize by 10 units" );
grLn();
grWriteln( " Right : rotate counter-clockwise" );
grWriteln( " Left : rotate clockwise" );
grWriteln( " F7 : big rotate counter-clockwise" );
grWriteln( " F8 : big rotate clockwise" );
grLn();
grWriteln( "press any key to exit this help screen" );
grRefreshSurface( display->surface );
grListenSurface( display->surface, gr_event_key, &dummy_event );
}
static void
write_header( FT_Error error_code )
{
FT_Face face;
const char* basename;
error = FTC_Manager_LookupFace( handle->cache_manager,
handle->scaler.face_id, &face );
if ( error )
PanicZ( "can't access font file" );
if ( !status.header )
{
basename = ft_basename( handle->current_font->filepathname );
switch ( error_code )
{
case FT_Err_Ok:
sprintf( status.header_buffer,
"%.50s %.50s (file `%.100s')", face->family_name,
face->style_name, basename );
break;
case FT_Err_Invalid_Pixel_Size:
sprintf( status.header_buffer, "Invalid pixel size (file `%.100s')",
basename );
break;
case FT_Err_Invalid_PPem:
sprintf( status.header_buffer, "Invalid ppem value (file `%.100s')",
basename );
break;
default:
sprintf( status.header_buffer, "File `%.100s': error 0x%04x", basename,
(FT_UShort)error_code );
break;
}
status.header = status.header_buffer;
}
grWriteCellString( display->bitmap, 0, 0,
status.header, display->fore_color );
sprintf( status.header_buffer, "at %g points, angle = %d",
status.ptsize / 64.0, status.angle );
grWriteCellString( display->bitmap, 0, CELLSTRING_HEIGHT,
status.header_buffer, display->fore_color );
grRefreshSurface( display->surface );
}
int
main( void )
{
FTDemo_Display* display;
grEvent dummy;
display = FTDemo_Display_New( gr_pixel_mode_rgb24 );
if ( !display )
{
PanicZ( "could not allocate display surface" );
}
grSetTitle( display->surface, "FreeType Gamma Matcher" );
Render_GammaGrid( display->bitmap );
grRefreshSurface( display->surface );
grListenSurface( display->surface, 0, &dummy );
exit( 0 ); /* for safety reasons */
return 0; /* never reached */
}