*/
#define HB_FONT_FUNCS_IMPLEMENT_CALLBACKS \
- HB_FONT_FUNC_IMPLEMENT (glyph) \
+ HB_FONT_FUNC_IMPLEMENT (font_h_extents) \
+ HB_FONT_FUNC_IMPLEMENT (font_v_extents) \
+ HB_FONT_FUNC_IMPLEMENT (nominal_glyph) \
+ HB_FONT_FUNC_IMPLEMENT (variation_glyph) \
HB_FONT_FUNC_IMPLEMENT (glyph_h_advance) \
HB_FONT_FUNC_IMPLEMENT (glyph_v_advance) \
HB_FONT_FUNC_IMPLEMENT (glyph_h_origin) \
hb_bool_t immutable;
- /* Don't access these directly. Call hb_font_get_*() instead. */
-
- struct {
-#define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_func_t name;
- HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
-#undef HB_FONT_FUNC_IMPLEMENT
- } get;
-
struct {
#define HB_FONT_FUNC_IMPLEMENT(name) void *name;
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_FONT_FUNC_IMPLEMENT
} destroy;
+
+ /* Don't access these directly. Call font->get_*() instead. */
+ union get_t {
+ struct get_funcs_t {
+#define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_func_t name;
+ HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
+#undef HB_FONT_FUNC_IMPLEMENT
+ } f;
+ void (*array[0
+#define HB_FONT_FUNC_IMPLEMENT(name) +1
+ HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
+#undef HB_FONT_FUNC_IMPLEMENT
+ ]) (void);
+ } get;
};
unsigned int x_ppem;
unsigned int y_ppem;
+ float ptem;
+
+ /* Font variation coordinates. */
+ unsigned int num_coords;
+ int *coords;
+
hb_font_funcs_t *klass;
void *user_data;
hb_destroy_func_t destroy;
/* Convert from font-space to user-space */
- inline hb_position_t em_scale_x (int16_t v) { return em_scale (v, this->x_scale); }
- inline hb_position_t em_scale_y (int16_t v) { return em_scale (v, this->y_scale); }
+ inline int dir_scale (hb_direction_t direction)
+ { return HB_DIRECTION_IS_VERTICAL(direction) ? y_scale : x_scale; }
+ inline hb_position_t em_scale_x (int16_t v) { return em_scale (v, x_scale); }
+ inline hb_position_t em_scale_y (int16_t v) { return em_scale (v, y_scale); }
+ inline hb_position_t em_scalef_x (float v) { return em_scalef (v, this->x_scale); }
+ inline hb_position_t em_scalef_y (float v) { return em_scalef (v, this->y_scale); }
+ inline float em_fscale_x (int16_t v) { return em_fscale (v, x_scale); }
+ inline float em_fscale_y (int16_t v) { return em_fscale (v, y_scale); }
+ inline hb_position_t em_scale_dir (int16_t v, hb_direction_t direction)
+ { return em_scale (v, dir_scale (direction)); }
/* Convert from parent-font user-space to our user-space */
inline hb_position_t parent_scale_x_distance (hb_position_t v) {
/* Public getters */
- inline hb_bool_t has_glyph (hb_codepoint_t unicode)
+ HB_INTERNAL bool has_func (unsigned int i);
+
+ /* has_* ... */
+#define HB_FONT_FUNC_IMPLEMENT(name) \
+ bool \
+ has_##name##_func (void) \
+ { \
+ hb_font_funcs_t *funcs = this->klass; \
+ unsigned int i = offsetof (hb_font_funcs_t::get_t::get_funcs_t, name) / sizeof (funcs->get.array[0]); \
+ return has_func (i); \
+ }
+ HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
+#undef HB_FONT_FUNC_IMPLEMENT
+
+ inline hb_bool_t get_font_h_extents (hb_font_extents_t *extents)
+ {
+ memset (extents, 0, sizeof (*extents));
+ return klass->get.f.font_h_extents (this, user_data,
+ extents,
+ klass->user_data.font_h_extents);
+ }
+ inline hb_bool_t get_font_v_extents (hb_font_extents_t *extents)
+ {
+ memset (extents, 0, sizeof (*extents));
+ return klass->get.f.font_v_extents (this, user_data,
+ extents,
+ klass->user_data.font_v_extents);
+ }
+
+ inline bool has_glyph (hb_codepoint_t unicode)
{
hb_codepoint_t glyph;
- return get_glyph (unicode, 0, &glyph);
+ return get_nominal_glyph (unicode, &glyph);
}
- inline hb_bool_t get_glyph (hb_codepoint_t unicode, hb_codepoint_t variation_selector,
- hb_codepoint_t *glyph)
+ inline hb_bool_t get_nominal_glyph (hb_codepoint_t unicode,
+ hb_codepoint_t *glyph)
{
*glyph = 0;
- return klass->get.glyph (this, user_data,
- unicode, variation_selector, glyph,
- klass->user_data.glyph);
+ return klass->get.f.nominal_glyph (this, user_data,
+ unicode, glyph,
+ klass->user_data.nominal_glyph);
+ }
+
+ inline hb_bool_t get_variation_glyph (hb_codepoint_t unicode, hb_codepoint_t variation_selector,
+ hb_codepoint_t *glyph)
+ {
+ *glyph = 0;
+ return klass->get.f.variation_glyph (this, user_data,
+ unicode, variation_selector, glyph,
+ klass->user_data.variation_glyph);
}
inline hb_position_t get_glyph_h_advance (hb_codepoint_t glyph)
{
- return klass->get.glyph_h_advance (this, user_data,
- glyph,
- klass->user_data.glyph_h_advance);
+ return klass->get.f.glyph_h_advance (this, user_data,
+ glyph,
+ klass->user_data.glyph_h_advance);
}
inline hb_position_t get_glyph_v_advance (hb_codepoint_t glyph)
{
- return klass->get.glyph_v_advance (this, user_data,
- glyph,
- klass->user_data.glyph_v_advance);
+ return klass->get.f.glyph_v_advance (this, user_data,
+ glyph,
+ klass->user_data.glyph_v_advance);
}
inline hb_bool_t get_glyph_h_origin (hb_codepoint_t glyph,
hb_position_t *x, hb_position_t *y)
{
*x = *y = 0;
- return klass->get.glyph_h_origin (this, user_data,
- glyph, x, y,
- klass->user_data.glyph_h_origin);
+ return klass->get.f.glyph_h_origin (this, user_data,
+ glyph, x, y,
+ klass->user_data.glyph_h_origin);
}
inline hb_bool_t get_glyph_v_origin (hb_codepoint_t glyph,
hb_position_t *x, hb_position_t *y)
{
*x = *y = 0;
- return klass->get.glyph_v_origin (this, user_data,
- glyph, x, y,
- klass->user_data.glyph_v_origin);
+ return klass->get.f.glyph_v_origin (this, user_data,
+ glyph, x, y,
+ klass->user_data.glyph_v_origin);
}
inline hb_position_t get_glyph_h_kerning (hb_codepoint_t left_glyph, hb_codepoint_t right_glyph)
{
- return klass->get.glyph_h_kerning (this, user_data,
- left_glyph, right_glyph,
- klass->user_data.glyph_h_kerning);
+ return klass->get.f.glyph_h_kerning (this, user_data,
+ left_glyph, right_glyph,
+ klass->user_data.glyph_h_kerning);
}
inline hb_position_t get_glyph_v_kerning (hb_codepoint_t top_glyph, hb_codepoint_t bottom_glyph)
{
- return klass->get.glyph_v_kerning (this, user_data,
- top_glyph, bottom_glyph,
- klass->user_data.glyph_v_kerning);
+ return klass->get.f.glyph_v_kerning (this, user_data,
+ top_glyph, bottom_glyph,
+ klass->user_data.glyph_v_kerning);
}
inline hb_bool_t get_glyph_extents (hb_codepoint_t glyph,
hb_glyph_extents_t *extents)
{
memset (extents, 0, sizeof (*extents));
- return klass->get.glyph_extents (this, user_data,
- glyph,
- extents,
- klass->user_data.glyph_extents);
+ return klass->get.f.glyph_extents (this, user_data,
+ glyph,
+ extents,
+ klass->user_data.glyph_extents);
}
inline hb_bool_t get_glyph_contour_point (hb_codepoint_t glyph, unsigned int point_index,
hb_position_t *x, hb_position_t *y)
{
*x = *y = 0;
- return klass->get.glyph_contour_point (this, user_data,
- glyph, point_index,
- x, y,
- klass->user_data.glyph_contour_point);
+ return klass->get.f.glyph_contour_point (this, user_data,
+ glyph, point_index,
+ x, y,
+ klass->user_data.glyph_contour_point);
}
inline hb_bool_t get_glyph_name (hb_codepoint_t glyph,
char *name, unsigned int size)
{
if (size) *name = '\0';
- return klass->get.glyph_name (this, user_data,
- glyph,
- name, size,
- klass->user_data.glyph_name);
+ return klass->get.f.glyph_name (this, user_data,
+ glyph,
+ name, size,
+ klass->user_data.glyph_name);
}
inline hb_bool_t get_glyph_from_name (const char *name, int len, /* -1 means nul-terminated */
{
*glyph = 0;
if (len == -1) len = strlen (name);
- return klass->get.glyph_from_name (this, user_data,
- name, len,
- glyph,
- klass->user_data.glyph_from_name);
+ return klass->get.f.glyph_from_name (this, user_data,
+ name, len,
+ glyph,
+ klass->user_data.glyph_from_name);
}
/* A bit higher-level, and with fallback */
+ inline void get_h_extents_with_fallback (hb_font_extents_t *extents)
+ {
+ if (!get_font_h_extents (extents))
+ {
+ extents->ascender = y_scale * .8;
+ extents->descender = extents->ascender - y_scale;
+ extents->line_gap = 0;
+ }
+ }
+ inline void get_v_extents_with_fallback (hb_font_extents_t *extents)
+ {
+ if (!get_font_v_extents (extents))
+ {
+ extents->ascender = x_scale / 2;
+ extents->descender = extents->ascender - x_scale;
+ extents->line_gap = 0;
+ }
+ }
+
+ inline void get_extents_for_direction (hb_direction_t direction,
+ hb_font_extents_t *extents)
+ {
+ if (likely (HB_DIRECTION_IS_HORIZONTAL (direction)))
+ get_h_extents_with_fallback (extents);
+ else
+ get_v_extents_with_fallback (extents);
+ }
+
inline void get_glyph_advance_for_direction (hb_codepoint_t glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y)
}
}
- /* Internal only */
inline void guess_v_origin_minus_h_origin (hb_codepoint_t glyph,
hb_position_t *x, hb_position_t *y)
{
*x = get_glyph_h_advance (glyph) / 2;
- /* TODO use font_metics.ascent */
- *y = y_scale;
+ /* TODO cache this somehow?! */
+ hb_font_extents_t extents;
+ get_h_extents_with_fallback (&extents);
+ *y = extents.ascender;
+ }
+
+ inline void get_glyph_h_origin_with_fallback (hb_codepoint_t glyph,
+ hb_position_t *x, hb_position_t *y)
+ {
+ if (!get_glyph_h_origin (glyph, x, y) &&
+ get_glyph_v_origin (glyph, x, y))
+ {
+ hb_position_t dx, dy;
+ guess_v_origin_minus_h_origin (glyph, &dx, &dy);
+ *x -= dx; *y -= dy;
+ }
+ }
+ inline void get_glyph_v_origin_with_fallback (hb_codepoint_t glyph,
+ hb_position_t *x, hb_position_t *y)
+ {
+ if (!get_glyph_v_origin (glyph, x, y) &&
+ get_glyph_h_origin (glyph, x, y))
+ {
+ hb_position_t dx, dy;
+ guess_v_origin_minus_h_origin (glyph, &dx, &dy);
+ *x += dx; *y += dy;
+ }
}
inline void get_glyph_origin_for_direction (hb_codepoint_t glyph,
hb_position_t *x, hb_position_t *y)
{
if (likely (HB_DIRECTION_IS_HORIZONTAL (direction)))
- {
- if (!get_glyph_h_origin (glyph, x, y) &&
- get_glyph_v_origin (glyph, x, y))
- {
- hb_position_t dx, dy;
- guess_v_origin_minus_h_origin (glyph, &dx, &dy);
- *x -= dx; *y -= dy;
- }
- }
+ get_glyph_h_origin_with_fallback (glyph, x, y);
else
- {
- if (!get_glyph_v_origin (glyph, x, y) &&
- get_glyph_h_origin (glyph, x, y))
- {
- hb_position_t dx, dy;
- guess_v_origin_minus_h_origin (glyph, &dx, &dy);
- *x += dx; *y += dy;
- }
- }
+ get_glyph_v_origin_with_fallback (glyph, x, y);
}
+ inline void add_glyph_h_origin (hb_codepoint_t glyph,
+ hb_position_t *x, hb_position_t *y)
+ {
+ hb_position_t origin_x, origin_y;
+
+ get_glyph_h_origin_with_fallback (glyph, &origin_x, &origin_y);
+
+ *x += origin_x;
+ *y += origin_y;
+ }
+ inline void add_glyph_v_origin (hb_codepoint_t glyph,
+ hb_position_t *x, hb_position_t *y)
+ {
+ hb_position_t origin_x, origin_y;
+
+ get_glyph_v_origin_with_fallback (glyph, &origin_x, &origin_y);
+
+ *x += origin_x;
+ *y += origin_y;
+ }
inline void add_glyph_origin_for_direction (hb_codepoint_t glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y)
*y += origin_y;
}
+ inline void subtract_glyph_h_origin (hb_codepoint_t glyph,
+ hb_position_t *x, hb_position_t *y)
+ {
+ hb_position_t origin_x, origin_y;
+
+ get_glyph_h_origin_with_fallback (glyph, &origin_x, &origin_y);
+
+ *x -= origin_x;
+ *y -= origin_y;
+ }
+ inline void subtract_glyph_v_origin (hb_codepoint_t glyph,
+ hb_position_t *x, hb_position_t *y)
+ {
+ hb_position_t origin_x, origin_y;
+
+ get_glyph_v_origin_with_fallback (glyph, &origin_x, &origin_y);
+
+ *x -= origin_x;
+ *y -= origin_y;
+ }
inline void subtract_glyph_origin_for_direction (hb_codepoint_t glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y)
hb_codepoint_t unichar;
if (0 == strncmp (s, "uni", 3) &&
hb_codepoint_parse (s + 3, len - 3, 16, &unichar) &&
- get_glyph (unichar, 0, glyph))
+ get_nominal_glyph (unichar, glyph))
return true;
}
return false;
}
- private:
- inline hb_position_t em_scale (int16_t v, int scale) { return (hb_position_t) (v * (int64_t) scale / face->get_upem ()); }
+ inline hb_position_t em_scale (int16_t v, int scale)
+ {
+ int upem = face->get_upem ();
+ int64_t scaled = v * (int64_t) scale;
+ scaled += scaled >= 0 ? upem/2 : -upem/2; /* Round. */
+ return (hb_position_t) (scaled / upem);
+ }
+ inline hb_position_t em_scalef (float v, int scale)
+ {
+ return (hb_position_t) round (v * scale / face->get_upem ());
+ }
+ inline float em_fscale (int16_t v, int scale)
+ {
+ return (float) v * scale / face->get_upem ();
+ }
};
#define HB_SHAPER_DATA_CREATE_FUNC_EXTRA_ARGS
projects / platform / upstream / harfbuzz.git / blobdiff