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Pass features down

This commit is contained in:
Behdad Esfahbod 2009-12-20 19:01:14 +01:00
parent 51f141a7f3
commit 196610ba4c
1 changed files with 33 additions and 16 deletions
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49
src/hb-shape.c
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@ -110,7 +110,9 @@ hb_map_glyphs (hb_font_t *font,
static void
hb_substitute_default (hb_font_t *font,
hb_face_t *face,
hb_buffer_t *buffer)
hb_buffer_t *buffer,
hb_feature_t *features,
unsigned int num_features)
{
hb_mirror_chars (buffer);
hb_map_glyphs (font, face, buffer);
@ -119,7 +121,9 @@ hb_substitute_default (hb_font_t *font,
static gboolean
hb_substitute_complex (hb_font_t *font,
hb_face_t *face,
hb_buffer_t *buffer)
hb_buffer_t *buffer,
hb_feature_t *features,
unsigned int num_features)
{
/* TODO GSUB */
return FALSE;
@ -128,7 +132,9 @@ hb_substitute_complex (hb_font_t *font,
static void
hb_substitute_fallback (hb_font_t *font,
hb_face_t *face,
hb_buffer_t *buffer)
hb_buffer_t *buffer,
hb_feature_t *features,
unsigned int num_features)
{
/* TODO Arabic */
}
@ -139,7 +145,9 @@ hb_substitute_fallback (hb_font_t *font,
static void
hb_position_default (hb_font_t *font,
hb_face_t *face,
hb_buffer_t *buffer)
hb_buffer_t *buffer,
hb_feature_t *features,
unsigned int num_features)
{
unsigned int count;
@ -157,7 +165,9 @@ hb_position_default (hb_font_t *font,
static gboolean
hb_position_complex (hb_font_t *font,
hb_face_t *face,
hb_buffer_t *buffer)
hb_buffer_t *buffer,
hb_feature_t *features,
unsigned int num_features)
{
/* TODO GPOS */
return FALSE;
@ -166,7 +176,9 @@ hb_position_complex (hb_font_t *font,
static void
hb_position_fallback (hb_font_t *font,
hb_face_t *face,
hb_buffer_t *buffer)
hb_buffer_t *buffer,
hb_feature_t *features,
unsigned int num_features)
{
/* TODO Mark pos */
}
@ -174,10 +186,13 @@ hb_position_fallback (hb_font_t *font,
static void
hb_truetype_kern (hb_font_t *font,
hb_face_t *face,
hb_buffer_t *buffer)
hb_buffer_t *buffer,
hb_feature_t *features,
unsigned int num_features)
{
unsigned int count;
/* TODO Check for kern=0 */
count = buffer->in_length;
for (buffer->in_pos = 1; buffer->in_pos < count; buffer->in_pos++) {
hb_position_t kern, kern1, kern2;
@ -193,9 +208,11 @@ hb_truetype_kern (hb_font_t *font,
static void
hb_position_fallback_visual (hb_font_t *font,
hb_face_t *face,
hb_buffer_t *buffer)
hb_buffer_t *buffer,
hb_feature_t *features,
unsigned int num_features)
{
hb_truetype_kern (font, face, buffer);
hb_truetype_kern (font, face, buffer, features, num_features);
}
@ -214,25 +231,25 @@ hb_shape (hb_font_t *font,
hb_form_clusters (buffer);
original_direction = hb_ensure_native_direction (buffer);
hb_substitute_default (font, face, buffer);
hb_substitute_default (font, face, buffer, features, num_features);
substitute_fallback = !hb_substitute_complex (font, face, buffer);
substitute_fallback = !hb_substitute_complex (font, face, buffer, features, num_features);
if (substitute_fallback)
hb_substitute_fallback (font, face, buffer);
hb_substitute_fallback (font, face, buffer, features, num_features);
hb_position_default (font, face, buffer);
hb_position_default (font, face, buffer, features, num_features);
position_fallback = !hb_position_complex (font, face, buffer);
position_fallback = !hb_position_complex (font, face, buffer, features, num_features);
if (position_fallback)
hb_position_fallback (font, face, buffer);
hb_position_fallback (font, face, buffer, features, num_features);
if (HB_DIRECTION_IS_BACKWARD (buffer->direction))
hb_buffer_reverse (buffer);
if (position_fallback)
hb_position_fallback_visual (font, face, buffer);
hb_position_fallback_visual (font, face, buffer, features, num_features);
buffer->direction = original_direction;
}