mirror of
https://github.com/brl/mutter.git
synced 2025-06-14 01:09:30 +00:00
2006-10-03 Matthew Allum <mallum@openedhand.com>
* configure.ac:
* clutter/Makefile.am:
* clutter/clutter-actor.c:
* clutter/clutter-label.c:
* clutter/clutter-label.h:
* clutter/pango/Makefile.am:
* clutter/pango/pangoclutter-font.c:
* clutter/pango/pangoclutter-fontmap.c:
* clutter/pango/pangoclutter-private.h:
* clutter/pango/pangoclutter-render.c:
* clutter/pango/pangoclutter.h:
Add initial rough new pango renderer and clutter-label.
* examples/super-oh.c:
* examples/test.c:
Minor fixups
This commit is contained in:
Matthew Allum
467
clutter/pango/pangoclutter-font.c
Normal file
467
clutter/pango/pangoclutter-font.c
Normal file
@ -0,0 +1,467 @@
|
||||
/* Pango
|
||||
* Clutter Freetype2 handling
|
||||
*
|
||||
* Copyright (C) 1999 Red Hat Software
|
||||
* Copyright (C) 2000 Tor Lillqvist
|
||||
* Copyright (C) 2006 Marc Lehmann <pcg@goof.com>
|
||||
*
|
||||
* This file is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This file is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#define PANGO_ENABLE_BACKEND
|
||||
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include <math.h>
|
||||
#include <glib.h>
|
||||
#include <glib/gprintf.h>
|
||||
|
||||
#include "pangoclutter.h"
|
||||
#include "pangoclutter-private.h"
|
||||
#include <pango/pangofc-font.h>
|
||||
#include <pango/pangofc-fontmap.h>
|
||||
|
||||
#define PANGO_CLUTTER_FONT_CLASS(klass) \
|
||||
(G_TYPE_CHECK_CLASS_CAST ((klass), \
|
||||
PANGO_TYPE_CLUTTER_FONT, \
|
||||
PangoClutterFontClass))
|
||||
|
||||
#define PANGO_CLUTTER_IS_FONT_CLASS(klass) \
|
||||
(G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_CLUTTER_FONT))
|
||||
|
||||
#define PANGO_CLUTTER_FONT_GET_CLASS(obj) \
|
||||
(G_TYPE_INSTANCE_GET_CLASS ((obj), \
|
||||
PANGO_TYPE_CLUTTER_FONT, \
|
||||
PangoClutterFontClass))
|
||||
|
||||
typedef struct _PangoClutterFontClass PangoClutterFontClass;
|
||||
|
||||
struct _PangoClutterFontClass
|
||||
{
|
||||
PangoFcFontClass parent_class;
|
||||
};
|
||||
|
||||
static void pango_clutter_font_finalize (GObject *object);
|
||||
|
||||
static void pango_clutter_font_get_glyph_extents (PangoFont *font,
|
||||
PangoGlyph glyph,
|
||||
PangoRectangle *ink_rect,
|
||||
PangoRectangle *logical_rect);
|
||||
|
||||
static FT_Face pango_clutter_font_real_lock_face (PangoFcFont *font);
|
||||
static void pango_clutter_font_real_unlock_face (PangoFcFont *font);
|
||||
|
||||
PangoClutterFont *
|
||||
_pango_clutter_font_new (PangoClutterFontMap *fontmap_, FcPattern *pattern)
|
||||
{
|
||||
PangoFontMap *fontmap = PANGO_FONT_MAP (fontmap_);
|
||||
PangoClutterFont *font;
|
||||
double d;
|
||||
|
||||
g_return_val_if_fail (fontmap != NULL, NULL);
|
||||
g_return_val_if_fail (pattern != NULL, NULL);
|
||||
|
||||
font = (PangoClutterFont *)g_object_new (PANGO_TYPE_CLUTTER_FONT,
|
||||
"pattern", pattern,
|
||||
NULL);
|
||||
|
||||
if (FcPatternGetDouble (pattern, FC_PIXEL_SIZE, 0, &d) == FcResultMatch)
|
||||
font->size = d * PANGO_SCALE;
|
||||
|
||||
return font;
|
||||
}
|
||||
|
||||
static void
|
||||
load_fallback_face (PangoClutterFont *font, const char *original_file)
|
||||
{
|
||||
PangoFcFont *fcfont = PANGO_FC_FONT (font);
|
||||
FcPattern *sans;
|
||||
FcPattern *matched;
|
||||
FcResult result;
|
||||
FT_Error error;
|
||||
FcChar8 *filename2 = NULL;
|
||||
gchar *name;
|
||||
int id;
|
||||
|
||||
sans = FcPatternBuild
|
||||
(NULL,
|
||||
FC_FAMILY, FcTypeString, "sans",
|
||||
FC_PIXEL_SIZE, FcTypeDouble, (double)font->size / PANGO_SCALE,
|
||||
NULL);
|
||||
|
||||
matched = FcFontMatch (NULL, sans, &result);
|
||||
|
||||
if (FcPatternGetString (matched, FC_FILE, 0, &filename2) != FcResultMatch)
|
||||
goto bail1;
|
||||
|
||||
if (FcPatternGetInteger (matched, FC_INDEX, 0, &id) != FcResultMatch)
|
||||
goto bail1;
|
||||
|
||||
error = FT_New_Face (_pango_clutter_font_map_get_library (fcfont->fontmap),
|
||||
(char *) filename2, id, &font->face);
|
||||
|
||||
if (error)
|
||||
{
|
||||
bail1:
|
||||
name = pango_font_description_to_string (fcfont->description);
|
||||
g_warning ("Unable to open font file %s for font %s, exiting\n",
|
||||
filename2, name);
|
||||
exit (1);
|
||||
}
|
||||
else
|
||||
{
|
||||
name = pango_font_description_to_string (fcfont->description);
|
||||
g_warning ("Unable to open font file %s for font %s, falling back to %s\n", original_file, name, filename2);
|
||||
g_free (name);
|
||||
}
|
||||
|
||||
FcPatternDestroy (sans);
|
||||
FcPatternDestroy (matched);
|
||||
}
|
||||
|
||||
static void
|
||||
set_transform (PangoClutterFont *font)
|
||||
{
|
||||
PangoFcFont *fcfont = (PangoFcFont *)font;
|
||||
FcMatrix *fc_matrix;
|
||||
|
||||
if (FcPatternGetMatrix (fcfont->font_pattern,
|
||||
FC_MATRIX,
|
||||
0,
|
||||
&fc_matrix) == FcResultMatch)
|
||||
{
|
||||
FT_Matrix ft_matrix;
|
||||
|
||||
ft_matrix.xx = 0x10000L * fc_matrix->xx;
|
||||
ft_matrix.yy = 0x10000L * fc_matrix->yy;
|
||||
ft_matrix.xy = 0x10000L * fc_matrix->xy;
|
||||
ft_matrix.yx = 0x10000L * fc_matrix->yx;
|
||||
|
||||
FT_Set_Transform (font->face, &ft_matrix, NULL);
|
||||
}
|
||||
}
|
||||
|
||||
FT_Face
|
||||
pango_clutter_font_get_face (PangoFont *font)
|
||||
{
|
||||
PangoClutterFont *glfont = (PangoClutterFont *)font;
|
||||
PangoFcFont *fcfont = (PangoFcFont *)font;
|
||||
FcPattern *pattern;
|
||||
FcChar8 *filename;
|
||||
FcBool antialias, hinting, autohint;
|
||||
FT_Error error;
|
||||
int id;
|
||||
|
||||
pattern = fcfont->font_pattern;
|
||||
|
||||
if (!glfont->face)
|
||||
{
|
||||
glfont->load_flags = 0;
|
||||
|
||||
/* disable antialiasing if requested */
|
||||
if (FcPatternGetBool (pattern, FC_ANTIALIAS,
|
||||
0, &antialias) != FcResultMatch)
|
||||
antialias = FcTrue;
|
||||
|
||||
glfont->load_flags |= FT_LOAD_NO_BITMAP;
|
||||
|
||||
/* disable hinting if requested */
|
||||
if (FcPatternGetBool (pattern, FC_HINTING,
|
||||
0, &hinting) != FcResultMatch)
|
||||
hinting = FcTrue;
|
||||
|
||||
if (!hinting)
|
||||
glfont->load_flags |= FT_LOAD_NO_HINTING;
|
||||
|
||||
/* force autohinting if requested */
|
||||
if (FcPatternGetBool (pattern, FC_AUTOHINT,
|
||||
0, &autohint) != FcResultMatch)
|
||||
autohint = FcFalse;
|
||||
|
||||
if (autohint)
|
||||
glfont->load_flags |= FT_LOAD_FORCE_AUTOHINT;
|
||||
|
||||
if (FcPatternGetString (pattern, FC_FILE, 0, &filename) != FcResultMatch)
|
||||
goto bail0;
|
||||
|
||||
if (FcPatternGetInteger (pattern, FC_INDEX, 0, &id) != FcResultMatch)
|
||||
goto bail0;
|
||||
|
||||
error
|
||||
= FT_New_Face (_pango_clutter_font_map_get_library (fcfont->fontmap),
|
||||
(char *)filename, id, &glfont->face);
|
||||
|
||||
if (error != FT_Err_Ok)
|
||||
{
|
||||
bail0:
|
||||
load_fallback_face (glfont, (char *)filename);
|
||||
}
|
||||
|
||||
g_assert (glfont->face);
|
||||
|
||||
set_transform (glfont);
|
||||
|
||||
error = FT_Set_Char_Size (glfont->face,
|
||||
PANGO_PIXELS_26_6 (glfont->size),
|
||||
PANGO_PIXELS_26_6 (glfont->size),
|
||||
0, 0);
|
||||
if (error)
|
||||
g_warning ("Error in FT_Set_Char_Size: %d", error);
|
||||
}
|
||||
|
||||
return glfont->face;
|
||||
}
|
||||
|
||||
G_DEFINE_TYPE (PangoClutterFont, pango_clutter_font, PANGO_TYPE_FC_FONT)
|
||||
|
||||
static void
|
||||
pango_clutter_font_init (PangoClutterFont *font)
|
||||
{
|
||||
font->face = NULL;
|
||||
font->size = 0;
|
||||
font->glyph_info = g_hash_table_new (NULL, NULL);
|
||||
}
|
||||
|
||||
static void
|
||||
pango_clutter_font_class_init (PangoClutterFontClass *class)
|
||||
{
|
||||
GObjectClass *object_class = G_OBJECT_CLASS (class);
|
||||
PangoFontClass *font_class = PANGO_FONT_CLASS (class);
|
||||
PangoFcFontClass *fc_font_class = PANGO_FC_FONT_CLASS (class);
|
||||
|
||||
object_class->finalize = pango_clutter_font_finalize;
|
||||
|
||||
font_class->get_glyph_extents = pango_clutter_font_get_glyph_extents;
|
||||
|
||||
fc_font_class->lock_face = pango_clutter_font_real_lock_face;
|
||||
fc_font_class->unlock_face = pango_clutter_font_real_unlock_face;
|
||||
}
|
||||
|
||||
static PangoClutterGlyphInfo *
|
||||
pango_clutter_font_get_glyph_info (PangoFont *font_,
|
||||
PangoGlyph glyph,
|
||||
gboolean create)
|
||||
{
|
||||
PangoClutterFont *font = (PangoClutterFont *)font_;
|
||||
PangoFcFont *fcfont = (PangoFcFont *)font;
|
||||
PangoClutterGlyphInfo *info;
|
||||
|
||||
info = g_hash_table_lookup (font->glyph_info, GUINT_TO_POINTER (glyph));
|
||||
|
||||
if ((info == NULL) && create)
|
||||
{
|
||||
info = g_slice_new0 (PangoClutterGlyphInfo);
|
||||
|
||||
pango_fc_font_get_raw_extents (fcfont, font->load_flags,
|
||||
glyph,
|
||||
&info->ink_rect,
|
||||
&info->logical_rect);
|
||||
|
||||
g_hash_table_insert (font->glyph_info, GUINT_TO_POINTER(glyph), info);
|
||||
}
|
||||
|
||||
return info;
|
||||
}
|
||||
|
||||
PangoGlyph
|
||||
pango_clutter_get_unknown_glyph (PangoFont *font)
|
||||
{
|
||||
FT_Face face = pango_clutter_font_get_face (font);
|
||||
|
||||
if (face && FT_IS_SFNT (face))
|
||||
/* TrueType fonts have an 'unknown glyph' box on glyph index 0 */
|
||||
return 0;
|
||||
else
|
||||
return PANGO_GLYPH_EMPTY;
|
||||
}
|
||||
|
||||
static void
|
||||
pango_clutter_font_get_glyph_extents (PangoFont *font,
|
||||
PangoGlyph glyph,
|
||||
PangoRectangle *ink_rect,
|
||||
PangoRectangle *logical_rect)
|
||||
{
|
||||
PangoClutterGlyphInfo *info;
|
||||
|
||||
if (glyph == PANGO_GLYPH_EMPTY)
|
||||
{
|
||||
if (ink_rect)
|
||||
ink_rect->x = ink_rect->y =
|
||||
ink_rect->height = ink_rect->width = 0;
|
||||
if (logical_rect)
|
||||
logical_rect->x = logical_rect->y =
|
||||
logical_rect->height = logical_rect->width = 0;
|
||||
return;
|
||||
}
|
||||
|
||||
if (glyph & PANGO_GLYPH_UNKNOWN_FLAG)
|
||||
{
|
||||
glyph = pango_clutter_get_unknown_glyph (font);
|
||||
if (glyph == PANGO_GLYPH_EMPTY)
|
||||
{
|
||||
/* No unknown glyph found for the font, draw a box */
|
||||
PangoFontMetrics *metrics = pango_font_get_metrics (font, NULL);
|
||||
|
||||
if (metrics)
|
||||
{
|
||||
if (ink_rect)
|
||||
{
|
||||
ink_rect->x = PANGO_SCALE;
|
||||
ink_rect->width = metrics->approximate_char_width - 2 * PANGO_SCALE;
|
||||
ink_rect->y = - (metrics->ascent - PANGO_SCALE);
|
||||
ink_rect->height = metrics->ascent + metrics->descent - 2 * PANGO_SCALE;
|
||||
}
|
||||
if (logical_rect)
|
||||
{
|
||||
logical_rect->x = 0;
|
||||
logical_rect->width = metrics->approximate_char_width;
|
||||
logical_rect->y = -metrics->ascent;
|
||||
logical_rect->height = metrics->ascent + metrics->descent;
|
||||
}
|
||||
|
||||
pango_font_metrics_unref (metrics);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (ink_rect)
|
||||
ink_rect->x = ink_rect->y =
|
||||
ink_rect->height = ink_rect->width = 0;
|
||||
if (logical_rect)
|
||||
logical_rect->x = logical_rect->y =
|
||||
logical_rect->height = logical_rect->width = 0;
|
||||
}
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
info = pango_clutter_font_get_glyph_info (font, glyph, TRUE);
|
||||
|
||||
if (ink_rect)
|
||||
*ink_rect = info->ink_rect;
|
||||
if (logical_rect)
|
||||
*logical_rect = info->logical_rect;
|
||||
}
|
||||
|
||||
int
|
||||
pango_clutter_font_get_kerning (PangoFont *font,
|
||||
PangoGlyph left,
|
||||
PangoGlyph right)
|
||||
{
|
||||
PangoFcFont *fc_font = PANGO_FC_FONT (font);
|
||||
|
||||
FT_Face face;
|
||||
FT_Error error;
|
||||
FT_Vector kerning;
|
||||
|
||||
face = pango_fc_font_lock_face (fc_font);
|
||||
if (!face)
|
||||
return 0;
|
||||
|
||||
if (!FT_HAS_KERNING (face))
|
||||
{
|
||||
pango_fc_font_unlock_face (fc_font);
|
||||
return 0;
|
||||
}
|
||||
|
||||
error = FT_Get_Kerning (face, left, right, ft_kerning_default, &kerning);
|
||||
if (error != FT_Err_Ok)
|
||||
{
|
||||
pango_fc_font_unlock_face (fc_font);
|
||||
return 0;
|
||||
}
|
||||
|
||||
pango_fc_font_unlock_face (fc_font);
|
||||
return PANGO_UNITS_26_6 (kerning.x);
|
||||
}
|
||||
|
||||
static FT_Face
|
||||
pango_clutter_font_real_lock_face (PangoFcFont *font)
|
||||
{
|
||||
return pango_clutter_font_get_face ((PangoFont *)font);
|
||||
}
|
||||
|
||||
static void
|
||||
pango_clutter_font_real_unlock_face (PangoFcFont *font)
|
||||
{
|
||||
}
|
||||
|
||||
static gboolean
|
||||
pango_clutter_free_glyph_info_callback (gpointer key,
|
||||
gpointer value,
|
||||
gpointer data)
|
||||
{
|
||||
PangoClutterFont *font = PANGO_CLUTTER_FONT (data);
|
||||
PangoClutterGlyphInfo *info = value;
|
||||
|
||||
if (font->glyph_cache_destroy && info->cached_glyph)
|
||||
(*font->glyph_cache_destroy) (info->cached_glyph);
|
||||
|
||||
g_slice_free (PangoClutterGlyphInfo, info);
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
pango_clutter_font_finalize (GObject *object)
|
||||
{
|
||||
PangoClutterFont *font = (PangoClutterFont *)object;
|
||||
|
||||
if (font->face)
|
||||
{
|
||||
FT_Done_Face (font->face);
|
||||
font->face = NULL;
|
||||
}
|
||||
|
||||
g_hash_table_foreach_remove (font->glyph_info,
|
||||
pango_clutter_free_glyph_info_callback, object);
|
||||
g_hash_table_destroy (font->glyph_info);
|
||||
|
||||
G_OBJECT_CLASS (pango_clutter_font_parent_class)->finalize (object);
|
||||
}
|
||||
|
||||
PangoCoverage*
|
||||
pango_clutter_font_get_coverage (PangoFont *font, PangoLanguage *language)
|
||||
{
|
||||
return pango_font_get_coverage (font, language);
|
||||
}
|
||||
|
||||
void*
|
||||
_pango_clutter_font_get_cache_glyph_data (PangoFont *font, int glyph_index)
|
||||
{
|
||||
PangoClutterGlyphInfo *info;
|
||||
|
||||
info = pango_clutter_font_get_glyph_info (font, glyph_index, FALSE);
|
||||
|
||||
return info ? info->cached_glyph : 0;
|
||||
}
|
||||
|
||||
void
|
||||
_pango_clutter_font_set_cache_glyph_data (PangoFont *font,
|
||||
int glyph_index,
|
||||
void *cached_glyph)
|
||||
{
|
||||
PangoClutterGlyphInfo *info;
|
||||
|
||||
info = pango_clutter_font_get_glyph_info (font, glyph_index, TRUE);
|
||||
|
||||
info->cached_glyph = cached_glyph;
|
||||
}
|
||||
|
||||
void
|
||||
_pango_clutter_font_set_glyph_cache_destroy (PangoFont *font,
|
||||
GDestroyNotify destroy_notify)
|
||||
{
|
||||
PANGO_CLUTTER_FONT (font)->glyph_cache_destroy = destroy_notify;
|
||||
}
|
||||
Reference in New Issue
Block a user