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#include "bitmap.h"
int main (int argc, char const *argv[])
{
FT_Library library;
FT_Face face;
FT_GlyphSlot slot;
FT_Bitmap* bitmap;
FT_Error error;
const char* font_file;
int size;
int render_mode; // argument
int load_flag; // FT_LOAD_XXX
int render_flag; // FT_RENDER_MODE_XXX
int target_flag; // FT_LOAD_TARGET_XXX
char* render_type; // for file_name
char name[100]; // hashes file name
int i; // for loop
if (argc != 4)
{
printf("\nTo generate 32-bit RGBA PNG(s) of all glyphs in a font\n");
printf("Images will be saved in a file named \n\
$(font)_$(pt_size)_$(render_mode)_$(glyph_index).png \n\n");
printf("Default: hashes of 256-level gray bitmaps will be generated\n\n");
printf("Usage ./<exe> <font_file> <pt_size> <render_mode>\n\n");
printf("Values for render_mode 0 - monochrome\n");
printf(" 1 - anti-aliased\n");
printf(" 2 - lcd horizontal-RGB\n");
printf(" 3 - lcd horizontal-BGR\n");
printf(" 4 - lcd vertical-RGB\n");
printf(" 5 - lcd vertical-BGR\n");
return 1;
}
font_file = argv[1];
size = atof(argv[2]);
render_mode = atoi(argv[3]);
error = FT_Init_FreeType( &library );
if(error){
printf("Error while initialising library\n");
}
if (render_mode > 1 )
{
error = FT_Library_SetLcdFilter( library,
FT_LCD_FILTER_DEFAULT );
if(error){
printf("Error while setting LCD filter\n");
}
}
error = FT_New_Face( library,
font_file,
0,
&face );
if(error){
printf("Error loading new face\n");
}
error = FT_Set_Char_Size( face,
size * 64,
0,
DPI,
0 );
if(error){
printf("Error setting character size\n");
}
switch ( render_mode ) {
case 0: render_flag = FT_RENDER_MODE_MONO;
load_flag = FT_LOAD_MONOCHROME;
target_flag = FT_LOAD_TARGET_MONO;
render_type = "mono";
break;
case 1: render_flag = FT_RENDER_MODE_NORMAL;
load_flag = FT_LOAD_DEFAULT;
target_flag = FT_LOAD_TARGET_NORMAL;
render_type = "gray";
break;
case 2: render_flag = FT_RENDER_MODE_LCD;
load_flag = FT_LOAD_DEFAULT;
target_flag = FT_LOAD_TARGET_LCD;
render_type = "lcd_rgb";
break;
case 3: render_flag = FT_RENDER_MODE_LCD;
load_flag = FT_LOAD_DEFAULT;
target_flag = FT_LOAD_TARGET_LCD;
render_type = "lcd_bgr";
break;
case 4: render_flag = FT_RENDER_MODE_LCD_V;
load_flag = FT_LOAD_DEFAULT;
target_flag = FT_LOAD_TARGET_LCD_V;
render_type = "lcd_ver_rgb";
break;
case 5: render_flag = FT_RENDER_MODE_LCD_V;
load_flag = FT_LOAD_DEFAULT;
target_flag = FT_LOAD_TARGET_LCD_V;
render_type = "lcd_ver_bgr";
break;
default:render_flag = FT_RENDER_MODE_NORMAL;
load_flag = FT_LOAD_DEFAULT;
target_flag = FT_LOAD_TARGET_NORMAL;
render_type = "gray";
}
slot = face->glyph;
sprintf(name,"./images/%s_%d_%s", font_file,
size,
render_type);
for (i = 0; i <face->num_glyphs; ++i)
{
error = FT_Load_Glyph( face,
i,
load_flag | target_flag);
if(error){
printf("Error loading glyph\n");
}
FT_Render_Glyph( slot,
render_flag);
if(error){
printf("Error rendering the glyph\n");
}
bitmap = &slot->bitmap;
if (bitmap->width == 0 || bitmap->rows == 0)
{
continue;
}
FT_Bitmap target;
FT_Bitmap_Init( &target );
int alignment = 4;
error = FT_Bitmap_Convert( library,
bitmap,
&target,
alignment);
if(error){
printf("Error converting the bitmap\n");
}
if (render_mode == 0)
{
Make_PNG(&target,name,i,render_mode);
}else{
Make_PNG(bitmap,name,i,render_mode);
}
}
FT_Done_Face ( face );
FT_Done_FreeType( library );
return 0;
}
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