static cairo_status_t
cr_user_font_face_unicode_to_glyph_func (cairo_scaled_font_t *scaled_font,
unsigned long unicode,
unsigned long *glyph_index)
{
cairo_status_t status = CAIRO_STATUS_SUCCESS;
cairo_font_face_t *face;
VALUE self;
VALUE receiver = Qnil;
ID id_method_name = cr_id_call;
face = cairo_scaled_font_get_font_face (scaled_font);
self = (VALUE)cairo_font_face_get_user_data (face, &ruby_object_key);
receiver = rb_ivar_get (self, cr_id_unicode_to_glyph);
if (NIL_P (receiver) &&
rb_obj_respond_to (self, cr_id_unicode_to_glyph, Qtrue))
{
receiver = self;
id_method_name = cr_id_unicode_to_glyph;
}
if (NIL_P (receiver))
{
*glyph_index = unicode;
}
else
{
cr_user_font_face_invoke_data_t data;
VALUE argv[2];
argv[0] = CRSCALEDFONT2RVAL (scaled_font);
argv[1] = ULONG2NUM (unicode);
data.receiver = receiver;
data.method = id_method_name;
data.argc = 2;
data.argv = argv;
data.status = &status;
data.after_hook = cr_user_font_face_unicode_to_glyph_func_after;
data.after_hook_data = glyph_index;
rb_cairo__invoke_callback (cr_user_font_face_invoke_func, (VALUE)&data);
}
return status;
}
static cairo_status_t
cr_user_font_face_render_glyph_func (cairo_scaled_font_t *scaled_font,
unsigned long glyph,
cairo_t *cr,
cairo_text_extents_t *extents)
{
cairo_status_t status = CAIRO_STATUS_SUCCESS;
cairo_font_face_t *face;
VALUE self;
VALUE receiver = Qnil;
ID id_method_name = cr_id_call;
face = cairo_scaled_font_get_font_face (scaled_font);
self = (VALUE)cairo_font_face_get_user_data (face, &ruby_object_key);
receiver = rb_ivar_get (self, cr_id_render_glyph);
if (NIL_P (receiver) && rb_obj_respond_to (self, cr_id_render_glyph, Qtrue))
{
receiver = self;
id_method_name = cr_id_render_glyph;
}
if (!NIL_P (receiver))
{
cr_user_font_face_invoke_data_t data;
VALUE argv[4];
argv[0] = CRSCALEDFONT2RVAL (scaled_font);
argv[1] = ULONG2NUM (glyph);
argv[2] = CRCONTEXT2RVAL (cr);
argv[3] = CRTEXTEXTENTS2RVAL (extents);
data.receiver = receiver;
data.method = id_method_name;
data.argc = 4;
data.argv = argv;
data.status = &status;
data.after_hook = cr_user_font_face_render_glyph_func_after;
data.after_hook_data = extents;
rb_cairo__invoke_callback (cr_user_font_face_invoke_func, (VALUE)&data);
}
return status;
}
static VALUE
cr_get_scaled_font (VALUE self)
{
return CRSCALEDFONT2RVAL (cairo_get_scaled_font (_SELF));
}
static cairo_status_t
cr_user_font_face_text_to_glyphs_func (cairo_scaled_font_t *scaled_font,
const char *utf8, int utf8_len,
cairo_glyph_t **glyphs, int *num_glyphs,
cairo_text_cluster_t **clusters,
int *num_clusters,
cairo_text_cluster_flags_t *cluster_flags)
{
cairo_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
cairo_font_face_t *face;
VALUE self;
VALUE receiver = Qnil;
ID id_method_name = cr_id_call;
face = cairo_scaled_font_get_font_face (scaled_font);
self = (VALUE)cairo_font_face_get_user_data (face, &ruby_object_key);
receiver = rb_ivar_get (self, cr_id_text_to_glyphs);
if (NIL_P (receiver) && rb_obj_respond_to (self, cr_id_text_to_glyphs, Qtrue))
{
receiver = self;
id_method_name = cr_id_text_to_glyphs;
}
if (NIL_P (receiver))
{
if (num_glyphs)
*num_glyphs = -1;
}
else
{
cr_user_font_face_invoke_data_t data;
cr_text_to_glyphs_after_hook_data_t after_hook_data;
VALUE text_to_glyphs_data;
VALUE argv[3];
argv[0] = CRSCALEDFONT2RVAL (scaled_font);
argv[1] = rb_str_new (utf8, utf8_len);
text_to_glyphs_data = rb_funcall (rb_cCairo_UserFontFace_TextToGlyphsData,
cr_id_new,
3,
CBOOL2RVAL (glyphs != NULL),
CBOOL2RVAL (clusters != NULL),
CBOOL2RVAL (cluster_flags != NULL));
argv[2] = text_to_glyphs_data;
data.receiver = receiver;
data.method = id_method_name;
data.argc = 3;
data.argv = argv;
data.status = &status;
data.after_hook = cr_user_font_face_text_to_glyphs_func_after;
data.after_hook_data = &after_hook_data;
after_hook_data.text_to_glyphs_data = text_to_glyphs_data;
after_hook_data.glyphs = glyphs;
after_hook_data.num_glyphs = num_glyphs;
after_hook_data.clusters = clusters;
after_hook_data.num_clusters = num_clusters;
after_hook_data.cluster_flags = cluster_flags;
rb_cairo__invoke_callback (cr_user_font_face_invoke_func, (VALUE)&data);
}
return status;
}
