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HarfBuzz: Update to version 4.0.0
This commit is contained in:
bruvzg
163
thirdparty/harfbuzz/src/hb-font.cc
vendored
163
thirdparty/harfbuzz/src/hb-font.cc
vendored
@@ -29,6 +29,7 @@
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#include "hb.hh"
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#include "hb-font.hh"
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#include "hb-draw.hh"
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#include "hb-machinery.hh"
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#include "hb-ot.h"
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@@ -501,6 +502,136 @@ hb_font_get_glyph_from_name_default (hb_font_t *font,
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return font->parent->get_glyph_from_name (name, len, glyph);
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}
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static void
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hb_font_get_glyph_shape_nil (hb_font_t *font HB_UNUSED,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph,
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hb_draw_funcs_t *draw_funcs,
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void *draw_data,
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void *user_data HB_UNUSED)
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{
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}
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typedef struct hb_font_get_glyph_shape_default_adaptor_t {
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hb_draw_funcs_t *draw_funcs;
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void *draw_data;
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float x_scale;
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float y_scale;
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} hb_font_get_glyph_shape_default_adaptor_t;
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static void
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hb_draw_move_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED,
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void *draw_data,
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hb_draw_state_t *st,
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float to_x, float to_y,
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void *user_data HB_UNUSED)
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{
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hb_font_get_glyph_shape_default_adaptor_t *adaptor = (hb_font_get_glyph_shape_default_adaptor_t *) draw_data;
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float x_scale = adaptor->x_scale;
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float y_scale = adaptor->y_scale;
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adaptor->draw_funcs->emit_move_to (adaptor->draw_data, *st,
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x_scale * to_x, y_scale * to_y);
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}
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static void
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hb_draw_line_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data,
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hb_draw_state_t *st,
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float to_x, float to_y,
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void *user_data HB_UNUSED)
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{
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hb_font_get_glyph_shape_default_adaptor_t *adaptor = (hb_font_get_glyph_shape_default_adaptor_t *) draw_data;
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float x_scale = adaptor->x_scale;
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float y_scale = adaptor->y_scale;
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st->current_x *= x_scale;
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st->current_y *= y_scale;
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adaptor->draw_funcs->emit_line_to (adaptor->draw_data, *st,
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x_scale * to_x, y_scale * to_y);
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}
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static void
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hb_draw_quadratic_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data,
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hb_draw_state_t *st,
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float control_x, float control_y,
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float to_x, float to_y,
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void *user_data HB_UNUSED)
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{
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hb_font_get_glyph_shape_default_adaptor_t *adaptor = (hb_font_get_glyph_shape_default_adaptor_t *) draw_data;
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float x_scale = adaptor->x_scale;
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float y_scale = adaptor->y_scale;
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st->current_x *= x_scale;
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st->current_y *= y_scale;
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adaptor->draw_funcs->emit_quadratic_to (adaptor->draw_data, *st,
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x_scale * control_x, y_scale * control_y,
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x_scale * to_x, y_scale * to_y);
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}
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static void
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hb_draw_cubic_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data,
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hb_draw_state_t *st,
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float control1_x, float control1_y,
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float control2_x, float control2_y,
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float to_x, float to_y,
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void *user_data HB_UNUSED)
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{
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hb_font_get_glyph_shape_default_adaptor_t *adaptor = (hb_font_get_glyph_shape_default_adaptor_t *) draw_data;
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float x_scale = adaptor->x_scale;
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float y_scale = adaptor->y_scale;
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st->current_x *= x_scale;
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st->current_y *= y_scale;
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adaptor->draw_funcs->emit_cubic_to (adaptor->draw_data, *st,
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x_scale * control1_x, y_scale * control1_y,
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x_scale * control2_x, y_scale * control2_y,
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x_scale * to_x, y_scale * to_y);
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}
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static void
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hb_draw_close_path_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data,
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hb_draw_state_t *st,
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void *user_data HB_UNUSED)
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{
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hb_font_get_glyph_shape_default_adaptor_t *adaptor = (hb_font_get_glyph_shape_default_adaptor_t *) draw_data;
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adaptor->draw_funcs->emit_close_path (adaptor->draw_data, *st);
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}
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static const hb_draw_funcs_t _hb_draw_funcs_default = {
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HB_OBJECT_HEADER_STATIC,
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{
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#define HB_DRAW_FUNC_IMPLEMENT(name) hb_draw_##name##_default,
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HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS
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#undef HB_DRAW_FUNC_IMPLEMENT
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}
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};
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static void
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hb_font_get_glyph_shape_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph,
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hb_draw_funcs_t *draw_funcs,
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void *draw_data,
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void *user_data HB_UNUSED)
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{
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hb_font_get_glyph_shape_default_adaptor_t adaptor = {
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draw_funcs,
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draw_data,
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(float) font->x_scale / (float) font->parent->x_scale,
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(float) font->y_scale / (float) font->parent->y_scale
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};
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font->parent->get_glyph_shape (glyph,
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const_cast<hb_draw_funcs_t *> (&_hb_draw_funcs_default),
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&adaptor);
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}
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DEFINE_NULL_INSTANCE (hb_font_funcs_t) =
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{
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HB_OBJECT_HEADER_STATIC,
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@@ -1168,6 +1299,26 @@ hb_font_get_glyph_from_name (hb_font_t *font,
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return font->get_glyph_from_name (name, len, glyph);
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}
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/**
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* hb_font_get_glyph_shape:
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* @font: #hb_font_t to work upon
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* @glyph: : The glyph ID
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* @dfuncs: #hb_draw_funcs_t to draw to
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* @draw_data: User data to pass to draw callbacks
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*
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* Fetches the glyph shape that corresponds to a glyph in the specified @font.
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* The shape is returned by way of calls to the callsbacks of the @dfuncs
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* objects, with @draw_data passed to them.
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*
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* Since: 4.0.0
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**/
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void
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hb_font_get_glyph_shape (hb_font_t *font,
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hb_codepoint_t glyph,
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hb_draw_funcs_t *dfuncs, void *draw_data)
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{
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font->get_glyph_shape (glyph, dfuncs, draw_data);
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}
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/* A bit higher-level, and with fallback */
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@@ -1190,7 +1341,7 @@ hb_font_get_extents_for_direction (hb_font_t *font,
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hb_direction_t direction,
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hb_font_extents_t *extents)
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{
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return font->get_extents_for_direction (direction, extents);
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font->get_extents_for_direction (direction, extents);
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}
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/**
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* hb_font_get_glyph_advance_for_direction:
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@@ -1215,7 +1366,7 @@ hb_font_get_glyph_advance_for_direction (hb_font_t *font,
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hb_position_t *x,
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hb_position_t *y)
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{
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return font->get_glyph_advance_for_direction (glyph, direction, x, y);
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font->get_glyph_advance_for_direction (glyph, direction, x, y);
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}
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/**
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* hb_font_get_glyph_advances_for_direction:
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@@ -2044,12 +2195,16 @@ hb_font_get_ptem (hb_font_t *font)
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* @slant: synthetic slant value.
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*
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* Sets the "synthetic slant" of a font. By default is zero.
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* Synthetic slant is the graphical skew that the renderer
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* applies to the font at rendering time.
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* Synthetic slant is the graphical skew applied to the font
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* at rendering time.
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*
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* HarfBuzz needs to know this value to adjust shaping results,
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* metrics, and style values to match the slanted rendering.
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*
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* <note>Note: The glyph shape fetched via the
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* hb_font_get_glyph_shape() is slanted to reflect this value
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* as well.</note>
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*
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* <note>Note: The slant value is a ratio. For example, a
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* 20% slant would be represented as a 0.2 value.</note>
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*
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