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Add _cairo_type3_glyph_surface_analyze_glyph()

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This function emits the glyph to a null stream with the side effect
that other glyphs referenced by this user-font glyph will be added to
the font subsets.
This commit is contained in:
Adrian Johnson 2008-09-11 08:38:39 +09:30
parent b74533b5a5
commit c3663324fd
4 changed files with 101 additions and 0 deletions
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28
src/cairo-pdf-surface.c
View file

@ -3480,6 +3480,28 @@ _cairo_pdf_emit_imagemask (cairo_image_surface_t *image,
return _cairo_output_stream_get_status (stream);
}
static cairo_status_t
_cairo_pdf_surface_analyze_user_font_subset (cairo_scaled_font_subset_t *font_subset,
void *closure)
{
cairo_status_t status = CAIRO_STATUS_SUCCESS;
unsigned int i;
cairo_surface_t *type3_surface;
type3_surface = _cairo_type3_glyph_surface_create (font_subset->scaled_font,
NULL,
_cairo_pdf_emit_imagemask);
for (i = 1; i < font_subset->num_glyphs; i++) {
status = _cairo_type3_glyph_surface_analyze_glyph (type3_surface,
font_subset->glyphs[i]);
if (status)
break;
}
cairo_surface_destroy (type3_surface);
return status;
}
static cairo_status_t
_cairo_pdf_surface_emit_type3_font_subset (cairo_pdf_surface_t *surface,
cairo_scaled_font_subset_t *font_subset)
@ -3713,6 +3735,12 @@ _cairo_pdf_surface_emit_font_subsets (cairo_pdf_surface_t *surface)
{
cairo_status_t status;
status = _cairo_scaled_font_subsets_foreach_user (surface->font_subsets,
_cairo_pdf_surface_analyze_user_font_subset,
surface);
if (status)
goto BAIL;
status = _cairo_scaled_font_subsets_foreach_unscaled (surface->font_subsets,
_cairo_pdf_surface_emit_unscaled_font_subset,
surface);

30
src/cairo-ps-surface.c
View file

@ -441,6 +441,30 @@ _cairo_ps_emit_imagemask (cairo_image_surface_t *image,
return _cairo_output_stream_get_status (stream);
}
static cairo_status_t
_cairo_ps_surface_analyze_user_font_subset (cairo_scaled_font_subset_t *font_subset,
void *closure)
{
cairo_status_t status = CAIRO_STATUS_SUCCESS;
unsigned int i;
cairo_surface_t *type3_surface;
type3_surface = _cairo_type3_glyph_surface_create (font_subset->scaled_font,
NULL,
_cairo_ps_emit_imagemask);
for (i = 1; i < font_subset->num_glyphs; i++) {
status = _cairo_type3_glyph_surface_analyze_glyph (type3_surface,
font_subset->glyphs[i]);
if (status)
break;
}
cairo_surface_destroy (type3_surface);
return status;
}
static cairo_status_t
_cairo_ps_surface_emit_type3_font_subset (cairo_ps_surface_t *surface,
cairo_scaled_font_subset_t *font_subset)
@ -601,6 +625,12 @@ _cairo_ps_surface_emit_font_subsets (cairo_ps_surface_t *surface)
"%% _cairo_ps_surface_emit_font_subsets\n");
#endif
status = _cairo_scaled_font_subsets_foreach_user (surface->font_subsets,
_cairo_ps_surface_analyze_user_font_subset,
surface);
if (status)
goto BAIL;
status = _cairo_scaled_font_subsets_foreach_unscaled (surface->font_subsets,
_cairo_ps_surface_emit_unscaled_font_subset,
surface);

4
src/cairo-type3-glyph-surface-private.h
View file

@ -62,6 +62,10 @@ _cairo_type3_glyph_surface_create (cairo_scaled_font_t *scaled_font,
cairo_output_stream_t *stream,
cairo_type3_glyph_surface_emit_image_t emit_image);
cairo_private cairo_status_t
_cairo_type3_glyph_surface_analyze_glyph (void *abstract_surface,
unsigned long glyph_index);
cairo_private cairo_status_t
_cairo_type3_glyph_surface_emit_notdef_glyph (void *abstract_surface,
cairo_output_stream_t *stream,

39
src/cairo-type3-glyph-surface.c
View file

@ -41,6 +41,7 @@
#include "cairo-type3-glyph-surface-private.h"
#include "cairo-output-stream-private.h"
#include "cairo-meta-surface-private.h"
#include "cairo-analysis-surface-private.h"
static const cairo_surface_backend_t cairo_type3_glyph_surface_backend;
@ -348,6 +349,44 @@ _cairo_type3_glyph_surface_emit_fallback_image (cairo_type3_glyph_surface_t *sur
return _cairo_type3_glyph_surface_emit_image (surface, image, &mat);
}
cairo_status_t
_cairo_type3_glyph_surface_analyze_glyph (void *abstract_surface,
unsigned long glyph_index)
{
cairo_type3_glyph_surface_t *surface = abstract_surface;
cairo_scaled_glyph_t *scaled_glyph;
cairo_status_t status, status2;
cairo_output_stream_t *null_stream;
null_stream = _cairo_null_stream_create ();
_cairo_type3_glyph_surface_set_stream (surface, null_stream);
status = _cairo_scaled_glyph_lookup (surface->scaled_font,
glyph_index,
CAIRO_SCALED_GLYPH_INFO_METRICS |
CAIRO_SCALED_GLYPH_INFO_META_SURFACE,
&scaled_glyph);
if (status && status != CAIRO_INT_STATUS_UNSUPPORTED)
goto cleanup;
if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
status = CAIRO_STATUS_SUCCESS;
goto cleanup;
}
status = _cairo_meta_surface_replay (scaled_glyph->meta_surface,
&surface->base);
if (status == CAIRO_INT_STATUS_IMAGE_FALLBACK)
status = CAIRO_STATUS_SUCCESS;
cleanup:
status2 = _cairo_output_stream_destroy (null_stream);
if (status)
return status;
return status2;
}
cairo_status_t
_cairo_type3_glyph_surface_emit_notdef_glyph (void *abstract_surface,
cairo_output_stream_t *stream,