+void init_freetype()
+{
+ FT_Library library;
+ if (FT_Init_FreeType(&library))
+ throw std::logic_error("FreeType init failed.");
+ if (FT_New_Face(library, "/usr/share/fonts/truetype/msttcorefonts/Georgia.ttf", 0, &font))
+ throw std::logic_error("Face opening failed.");
+ if (FT_New_Face(library, "/usr/share/fonts/truetype/freefont/FreeSerif.ttf", 0, &symbolfont))
+ throw std::logic_error("Face opening failed.");
+ if (FT_Set_Char_Size(font, 0, 12 * 64, 96, 96))
+ throw std::logic_error("Size set failed.");
+ if (FT_Set_Char_Size(symbolfont, 0, 12 * 64, 96, 96))
+ throw std::logic_error("Size set failed.");
+}
+
+int my_draw_text(const widestring &str, unsigned char *buf, int xpos, int ypos, bool real_render, int r, int g, int b, FT_Face face, FT_Face symbolface)
+{
+ FT_GlyphSlot slot;
+ int x = 0;
+
+ for (widestring::const_iterator i = str.begin(); i != str.end(); ++i) {
+ // try the normal font first, fall back if there's some special character
+ int glyph_index = FT_Get_Char_Index(face, *i);
+ if (glyph_index == 0) {
+ std::fprintf(stderr, "Couldn't find U+%x in primary face, falling back to symbol face\n",
+ *i);
+ glyph_index = FT_Get_Char_Index(symbolface, *i);
+ if (glyph_index == 0) {
+ std::fprintf(stderr, "Couldn't find U+%x in symbol face, ignoring\n", *i);
+ continue;
+ }
+ if (FT_Load_Glyph(symbolface, glyph_index, FT_LOAD_RENDER))
+ throw std::runtime_error("Couldn't load glyph from symbol face");
+ slot = symbolface->glyph;
+ } else {
+ if (FT_Load_Glyph(face, glyph_index, FT_LOAD_RENDER))
+ throw std::runtime_error("Couldn't load glyph from primary face");
+ slot = face->glyph;
+ }
+
+ if (real_render) {
+ int y;
+ FT_Bitmap *bm = &(slot->bitmap);
+ for (y = 0; y < bm->rows; y++) {
+ int xx;
+ int dsty = ypos - slot->bitmap_top + y;
+ if (dsty < 0 || dsty > 599) continue;
+
+ unsigned char *dst = buf + dsty * 800*4 + (x + xpos + slot->bitmap_left)*4;
+ unsigned char *src = bm->buffer + y * bm->width;
+ for (xx = 0; xx < bm->width; xx++) {
+ *dst = (*dst * (256-*src) + r * *src) >> 8;
+ *dst++;
+ *dst = (*dst * (256-*src) + g * *src) >> 8;
+ *dst++;
+ *dst = (*dst * (256-*src) + b * *src) >> 8;
+ *dst++;
+ *dst++ = 0;
+ src++;
+ }
+ }
+ }
+
+ x += slot->advance.x >> 6;
+ }
+
+ return x;
+}
+
+