#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_OUTLINE_H
#include FT_SIZES_H
#include FT_GLYPH_H

static void eerror(const char *msg, FT_Error e)
{
	printf("%s 0x%0x\n", msg, e);
	exit(1);
}

int main(int argc, char *argv[])
{
	FT_Face face;
	FT_Vector offset;
	FT_GlyphSlot slot;
	FT_UInt gid;
	FT_Matrix matrix;
	FT_Library lib;
	FT_Error e;

	if (e = FT_Init_FreeType(&lib))
		eerror("1", e);
	
	if (e = FT_New_Face(lib, "font.ttf", 0, &face))
		eerror("2", e);
	
	if (e = FT_New_Size(face, &face->size))
		eerror("3", e);
	
	if (e = FT_Set_Pixel_Sizes(face, 0, 28))
		eerror("6", e);
	
	matrix.xx = (FT_Fixed)(0);
	matrix.yx = (FT_Fixed)(65536);
	matrix.xy = (FT_Fixed)(-65536);
	matrix.yy = (FT_Fixed)(0);
	offset.x = 0;
	offset.y = 0;
	
	FT_Set_Transform(face, &matrix, &offset);
	slot = face->glyph;

	gid = (FT_UInt)45;

	if (e = FT_Load_Glyph(face, gid, FT_LOAD_NO_BITMAP))
		eerror("4", e);

	FT_Glyph_Metrics *glyphMetrics = &(face->glyph->metrics);
	int x = -glyphMetrics->horiBearingX / 64.0;
	int y = glyphMetrics->horiBearingY / 64.0;
	int w = glyphMetrics->width / 64.0;
	int h = glyphMetrics->height / 64.0;

	if (e = FT_Render_Glyph(slot, ft_render_mode_normal))
		eerror("5", e);

	int x2 = -slot->bitmap_left;
	int y2 = slot->bitmap_top;
	int w2 = slot->bitmap.width;
	int h2 = slot->bitmap.rows;
	
	printf("%d %d\n", x, x2);
	printf("%d %d\n", y, y2);
	printf("%d %d\n", w, w2);
	printf("%d %d\n", h, h2);
}