Function SysFont_DrawText

src/SystemFonts.c:904–979

static FT_Vector shadow_delta = { 83, -83 };
void SysFont_DrawText(struct DrawTextArgs* args, struct Bitmap* bmp, int x, int y, cc_bool shadow) {
	struct SysFont* font  = (struct SysFont*)args->font->handle;
	FT_BitmapGlyph* glyphs = font->glyphs;

	FT_Face face   = font->face;
	cc_string text = args->text;
	int descender, height, begX = x;
	BitmapCol color;
	
	/* glyph state */
	FT_BitmapGlyph glyph;
	FT_Bitmap* img;
	int i, offset;
	FT_Error res;
	cc_unichar uc;

	if (shadow) {
		glyphs = font->shadow_glyphs;
		FT_Set_Transform(face, NULL, &shadow_delta);
	}

	height    = args->font->height;
	descender = TEXT_CEIL(face->size->metrics.descender);

	color = Drawer2D.Colors['f'];
	if (shadow) color = GetShadowColor(color);

	for (i = 0; i < text.length; i++) {
		char c = text.buffer[i];
		if (c == '&' && Drawer2D_ValidColorCodeAt(&text, i + 1)) {
			color = Drawer2D_GetColor(text.buffer[i + 1]);

			if (shadow) color = GetShadowColor(color);
			i++; continue; /* skip over the color code */
		}

		glyph = glyphs[(cc_uint8)c];
		if (!glyph) {
			uc  = Convert_CP437ToUnicode(c);
			res = FT_Load_Char(face, uc, FT_LOAD_RENDER);

			if (res) {
				Platform_Log2("Error %e drawing %r", &res, &text.buffer[i]);
				continue;
			}

			/* due to FT_LOAD_RENDER, glyph is always a bitmap one */
			FT_Get_Glyph(face->glyph, (FT_Glyph*)&glyph); /* TODO: Check error */
			glyphs[(cc_uint8)c] = glyph;
		}

		offset = (height + descender) - glyph->top;
		x += glyph->left; y += offset;

		img = &glyph->bitmap;
		if (img->num_grays == 2) {
			DrawBlackWhiteGlyph(img, bmp, x, y, color);
		} else {