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Diffstat (limited to 'thirdparty/harfbuzz/src/hb-font.cc')
-rw-r--r--thirdparty/harfbuzz/src/hb-font.cc163
1 files changed, 159 insertions, 4 deletions
diff --git a/thirdparty/harfbuzz/src/hb-font.cc b/thirdparty/harfbuzz/src/hb-font.cc
index 350fcac139..db05f017a5 100644
--- a/thirdparty/harfbuzz/src/hb-font.cc
+++ b/thirdparty/harfbuzz/src/hb-font.cc
@@ -29,6 +29,7 @@
#include "hb.hh"
#include "hb-font.hh"
+#include "hb-draw.hh"
#include "hb-machinery.hh"
#include "hb-ot.h"
@@ -501,6 +502,136 @@ hb_font_get_glyph_from_name_default (hb_font_t *font,
return font->parent->get_glyph_from_name (name, len, glyph);
}
+static void
+hb_font_get_glyph_shape_nil (hb_font_t *font HB_UNUSED,
+ void *font_data HB_UNUSED,
+ hb_codepoint_t glyph,
+ hb_draw_funcs_t *draw_funcs,
+ void *draw_data,
+ void *user_data HB_UNUSED)
+{
+}
+
+
+typedef struct hb_font_get_glyph_shape_default_adaptor_t {
+ hb_draw_funcs_t *draw_funcs;
+ void *draw_data;
+ float x_scale;
+ float y_scale;
+} hb_font_get_glyph_shape_default_adaptor_t;
+
+static void
+hb_draw_move_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED,
+ void *draw_data,
+ hb_draw_state_t *st,
+ float to_x, float to_y,
+ void *user_data HB_UNUSED)
+{
+ hb_font_get_glyph_shape_default_adaptor_t *adaptor = (hb_font_get_glyph_shape_default_adaptor_t *) draw_data;
+ float x_scale = adaptor->x_scale;
+ float y_scale = adaptor->y_scale;
+
+ adaptor->draw_funcs->emit_move_to (adaptor->draw_data, *st,
+ x_scale * to_x, y_scale * to_y);
+}
+
+static void
+hb_draw_line_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data,
+ hb_draw_state_t *st,
+ float to_x, float to_y,
+ void *user_data HB_UNUSED)
+{
+ hb_font_get_glyph_shape_default_adaptor_t *adaptor = (hb_font_get_glyph_shape_default_adaptor_t *) draw_data;
+ float x_scale = adaptor->x_scale;
+ float y_scale = adaptor->y_scale;
+
+ st->current_x *= x_scale;
+ st->current_y *= y_scale;
+
+ adaptor->draw_funcs->emit_line_to (adaptor->draw_data, *st,
+ x_scale * to_x, y_scale * to_y);
+}
+
+static void
+hb_draw_quadratic_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data,
+ hb_draw_state_t *st,
+ float control_x, float control_y,
+ float to_x, float to_y,
+ void *user_data HB_UNUSED)
+{
+ hb_font_get_glyph_shape_default_adaptor_t *adaptor = (hb_font_get_glyph_shape_default_adaptor_t *) draw_data;
+ float x_scale = adaptor->x_scale;
+ float y_scale = adaptor->y_scale;
+
+ st->current_x *= x_scale;
+ st->current_y *= y_scale;
+
+ adaptor->draw_funcs->emit_quadratic_to (adaptor->draw_data, *st,
+ x_scale * control_x, y_scale * control_y,
+ x_scale * to_x, y_scale * to_y);
+}
+
+static void
+hb_draw_cubic_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data,
+ hb_draw_state_t *st,
+ float control1_x, float control1_y,
+ float control2_x, float control2_y,
+ float to_x, float to_y,
+ void *user_data HB_UNUSED)
+{
+ hb_font_get_glyph_shape_default_adaptor_t *adaptor = (hb_font_get_glyph_shape_default_adaptor_t *) draw_data;
+ float x_scale = adaptor->x_scale;
+ float y_scale = adaptor->y_scale;
+
+ st->current_x *= x_scale;
+ st->current_y *= y_scale;
+
+ adaptor->draw_funcs->emit_cubic_to (adaptor->draw_data, *st,
+ x_scale * control1_x, y_scale * control1_y,
+ x_scale * control2_x, y_scale * control2_y,
+ x_scale * to_x, y_scale * to_y);
+}
+
+static void
+hb_draw_close_path_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data,
+ hb_draw_state_t *st,
+ void *user_data HB_UNUSED)
+{
+ hb_font_get_glyph_shape_default_adaptor_t *adaptor = (hb_font_get_glyph_shape_default_adaptor_t *) draw_data;
+
+ adaptor->draw_funcs->emit_close_path (adaptor->draw_data, *st);
+}
+
+static const hb_draw_funcs_t _hb_draw_funcs_default = {
+ HB_OBJECT_HEADER_STATIC,
+
+ {
+#define HB_DRAW_FUNC_IMPLEMENT(name) hb_draw_##name##_default,
+ HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS
+#undef HB_DRAW_FUNC_IMPLEMENT
+ }
+};
+
+static void
+hb_font_get_glyph_shape_default (hb_font_t *font,
+ void *font_data HB_UNUSED,
+ hb_codepoint_t glyph,
+ hb_draw_funcs_t *draw_funcs,
+ void *draw_data,
+ void *user_data HB_UNUSED)
+{
+ hb_font_get_glyph_shape_default_adaptor_t adaptor = {
+ draw_funcs,
+ draw_data,
+ (float) font->x_scale / (float) font->parent->x_scale,
+ (float) font->y_scale / (float) font->parent->y_scale
+ };
+
+ font->parent->get_glyph_shape (glyph,
+ const_cast<hb_draw_funcs_t *> (&_hb_draw_funcs_default),
+ &adaptor);
+}
+
DEFINE_NULL_INSTANCE (hb_font_funcs_t) =
{
HB_OBJECT_HEADER_STATIC,
@@ -1168,6 +1299,26 @@ hb_font_get_glyph_from_name (hb_font_t *font,
return font->get_glyph_from_name (name, len, glyph);
}
+/**
+ * hb_font_get_glyph_shape:
+ * @font: #hb_font_t to work upon
+ * @glyph: : The glyph ID
+ * @dfuncs: #hb_draw_funcs_t to draw to
+ * @draw_data: User data to pass to draw callbacks
+ *
+ * Fetches the glyph shape that corresponds to a glyph in the specified @font.
+ * The shape is returned by way of calls to the callsbacks of the @dfuncs
+ * objects, with @draw_data passed to them.
+ *
+ * Since: 4.0.0
+ **/
+void
+hb_font_get_glyph_shape (hb_font_t *font,
+ hb_codepoint_t glyph,
+ hb_draw_funcs_t *dfuncs, void *draw_data)
+{
+ font->get_glyph_shape (glyph, dfuncs, draw_data);
+}
/* A bit higher-level, and with fallback */
@@ -1190,7 +1341,7 @@ hb_font_get_extents_for_direction (hb_font_t *font,
hb_direction_t direction,
hb_font_extents_t *extents)
{
- return font->get_extents_for_direction (direction, extents);
+ font->get_extents_for_direction (direction, extents);
}
/**
* hb_font_get_glyph_advance_for_direction:
@@ -1215,7 +1366,7 @@ hb_font_get_glyph_advance_for_direction (hb_font_t *font,
hb_position_t *x,
hb_position_t *y)
{
- return font->get_glyph_advance_for_direction (glyph, direction, x, y);
+ font->get_glyph_advance_for_direction (glyph, direction, x, y);
}
/**
* hb_font_get_glyph_advances_for_direction:
@@ -2044,12 +2195,16 @@ hb_font_get_ptem (hb_font_t *font)
* @slant: synthetic slant value.
*
* Sets the "synthetic slant" of a font. By default is zero.
- * Synthetic slant is the graphical skew that the renderer
- * applies to the font at rendering time.
+ * Synthetic slant is the graphical skew applied to the font
+ * at rendering time.
*
* HarfBuzz needs to know this value to adjust shaping results,
* metrics, and style values to match the slanted rendering.
*
+ * <note>Note: The glyph shape fetched via the
+ * hb_font_get_glyph_shape() is slanted to reflect this value
+ * as well.</note>
+ *
* <note>Note: The slant value is a ratio. For example, a
* 20% slant would be represented as a 0.2 value.</note>
*
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 12:38:26 +0000