Update for the changes to PangoCairoFontMap and PangoCairoFont.

2007-06-12  Richard Hult  <richard@imendio.com>

	* pango/pangocairo-atsuifont.c:
	* pango/pangocairo-atsuifontmap.c: Update for the changes to
	PangoCairoFontMap and PangoCairoFont.

svn path=/trunk/; revision=2341

1 files changed, 52 insertions, 230 deletions

diff --git a/pango/pangocairo-atsuifont.c b/pango/pangocairo-atsuifont.c
index a5501439..e477a036 100644
--- a/pango/pangocairo-atsuifont.c
+++ b/pango/pangocairo-atsuifont.c
@@ -33,18 +33,12 @@
 struct _PangoCairoATSUIFont
 {
   PangoATSUIFont font;
+  PangoCairoFontPrivate cf_priv;
 
   ATSUFontID font_id;
-  cairo_font_face_t *font_face;
-  cairo_scaled_font_t *scaled_font;
-  cairo_matrix_t font_matrix;
-  cairo_matrix_t ctm;
-  cairo_font_options_t *options;
 
   double size;
   int absolute_size;
-
-  GSList *metrics_by_lang;
 };
 
 struct _PangoCairoATSUIFontClass
@@ -54,7 +48,10 @@ struct _PangoCairoATSUIFontClass
 
 
 
-static cairo_font_face_t *pango_cairo_atsui_font_get_font_face (PangoCairoFont *font);
+static cairo_font_face_t *pango_cairo_atsui_font_create_font_face           (PangoCairoFont *font);
+static PangoFontMetrics  *pango_cairo_atsui_font_create_metrics_for_context (PangoCairoFont *font,
+                                                                            PangoContext    *context);
+
 
 /**
  * pango_cairo_atsui_font_get_atsu_font_id:
@@ -72,137 +69,40 @@ pango_cairo_atsui_font_get_atsu_font_id (PangoCairoATSUIFont *cafont)
   return cafont->font_id;
 }
 
-static gboolean
-pango_cairo_atsui_font_install (PangoCairoFont *font,
-				cairo_t        *cr)
-{
-  PangoCairoATSUIFont *cafont = PANGO_CAIRO_ATSUI_FONT (font);
-
-  cairo_set_font_face (cr,
-		       pango_cairo_atsui_font_get_font_face (font));
-
-  cairo_set_font_matrix (cr, &cafont->font_matrix);
-  cairo_set_font_options (cr, cafont->options);
-
-  return TRUE;
-}
-
-static cairo_font_face_t *
-pango_cairo_atsui_font_get_font_face (PangoCairoFont *font)
-{
-  PangoCairoATSUIFont *cafont = PANGO_CAIRO_ATSUI_FONT (font);
-
-  if (!cafont->font_face)
-    {
-      cafont->font_face = cairo_atsui_font_face_create_for_atsu_font_id (cafont->font_id);
-
-      /* Failure of the above should only occur for out of memory,
-       * we can't proceed at that point
-       */
-      if (!cafont->font_face)
-	g_error ("Unable to create ATSUI cairo font face.\nThis means out of memory or a cairo/fontconfig/FreeType bug");
-    }
-
-  return cafont->font_face;
-}
-
-static cairo_scaled_font_t *
-pango_cairo_atsui_font_get_scaled_font (PangoCairoFont *font)
-{
-  PangoCairoATSUIFont *cafont = PANGO_CAIRO_ATSUI_FONT (font);
-
-  if (!cafont->scaled_font)
-    {
-      cairo_font_face_t *font_face;
-
-      font_face = pango_cairo_atsui_font_get_font_face (font);
-      cafont->scaled_font = cairo_scaled_font_create (font_face,
-						      &cafont->font_matrix,
-						      &cafont->ctm,
-						      cafont->options);
-
-      /* Failure of the above should only occur for out of memory,
-       * we can't proceed at that point
-       */
-      if (!cafont->scaled_font)
-	g_error ("Unable to create ATSUI cairo scaled font.\nThis means out of memory or a cairo/fontconfig/FreeType bug");
-    }
-
-  return cafont->scaled_font;
-}
-
 static void
 cairo_font_iface_init (PangoCairoFontIface *iface)
 {
-  iface->install = pango_cairo_atsui_font_install;
-  iface->get_font_face = pango_cairo_atsui_font_get_font_face;
-  iface->get_scaled_font = pango_cairo_atsui_font_get_scaled_font;
+  iface->create_font_face = pango_cairo_atsui_font_create_font_face;
+  iface->create_metrics_for_context = pango_cairo_atsui_font_create_metrics_for_context;
+  iface->cf_priv_offset = G_STRUCT_OFFSET (PangoCairoATSUIFont, cf_priv);
 }
 
 G_DEFINE_TYPE_WITH_CODE (PangoCairoATSUIFont, pango_cairo_atsui_font, PANGO_TYPE_ATSUI_FONT,
     { G_IMPLEMENT_INTERFACE (PANGO_TYPE_CAIRO_FONT, cairo_font_iface_init) });
 
+/* we want get_glyph_extents extremely fast, so we use a small wrapper here
+ * to avoid having to lookup the interface data like we do for get_metrics
+ * in _pango_cairo_font_get_metrics(). */
 static void
-pango_cairo_atsui_font_get_glyph_extents (PangoFont        *font,
-					  PangoGlyph        glyph,
-					  PangoRectangle   *ink_rect,
-					  PangoRectangle   *logical_rect)
+pango_cairo_atsui_font_get_glyph_extents (PangoFont      *font,
+                                          PangoGlyph      glyph,
+                                          PangoRectangle *ink_rect,
+                                          PangoRectangle *logical_rect)
 {
-  PangoCairoFont *cfont = (PangoCairoFont *)font;
-  cairo_scaled_font_t *scaled_font;
-  cairo_font_extents_t font_extents;
-  cairo_text_extents_t extents;
-  cairo_glyph_t cairo_glyph;
-
-  scaled_font = pango_cairo_atsui_font_get_scaled_font (PANGO_CAIRO_FONT (font));
-
-  if (logical_rect)
-    cairo_scaled_font_extents (scaled_font, &font_extents);
-
-  cairo_glyph.index = glyph;
-  cairo_glyph.x = 0;
-  cairo_glyph.y = 0;
+  PangoCairoATSUIFont *cafont = (PangoCairoATSUIFont *) (font);
 
-  if (glyph == PANGO_GLYPH_EMPTY)
-    {
-      if (ink_rect)
-	{
-	  ink_rect->x = ink_rect->y = ink_rect->width = ink_rect->height = 0;
-	}
-      if (logical_rect)
-	{
-	  logical_rect->x = 0;
-	  logical_rect->y = - font_extents.ascent * PANGO_SCALE;
-	  logical_rect->width = 0;
-	  logical_rect->height = (font_extents.ascent + font_extents.descent) * PANGO_SCALE;
-	}
-    }
-  else if (glyph & PANGO_GLYPH_UNKNOWN_FLAG)
-    {
-      /* space for the hex box */
-      _pango_cairo_get_glyph_extents_missing(cfont, glyph, ink_rect, logical_rect);
-    }
-  else
-    {
-      cairo_scaled_font_glyph_extents (scaled_font,
-				       &cairo_glyph, 1, &extents);
+  _pango_cairo_font_private_get_glyph_extents (&cafont->cf_priv,
+					       glyph,
+					       ink_rect,
+					       logical_rect);
+}
 
-      if (ink_rect)
-	{
-	  ink_rect->x = extents.x_bearing * PANGO_SCALE;
-	  ink_rect->y = extents.y_bearing * PANGO_SCALE;
-	  ink_rect->width = extents.width * PANGO_SCALE;
-	  ink_rect->height = extents.height * PANGO_SCALE;
-	}
+static cairo_font_face_t *
+pango_cairo_atsui_font_create_font_face (PangoCairoFont *font)
+{
+  PangoCairoATSUIFont *cafont = (PangoCairoATSUIFont *) (font);
 
-      if (logical_rect)
-	{
-	  logical_rect->x = 0;
-	  logical_rect->y = - font_extents.ascent * PANGO_SCALE;
-	  logical_rect->width = extents.x_advance * PANGO_SCALE;
-	  logical_rect->height = (font_extents.ascent + font_extents.descent) * PANGO_SCALE;
-	}
-    }
+  return cairo_atsui_font_face_create_for_atsu_font_id (cafont->font_id);
 }
 
 static int
@@ -230,10 +130,10 @@ max_glyph_width (PangoLayout *layout)
 }
 
 static PangoFontMetrics *
-create_metrics_for_context (PangoFont    *font,
-			    PangoContext *context)
+pango_cairo_atsui_font_create_metrics_for_context (PangoCairoFont *font,
+                                                   PangoContext   *context)
 {
-  PangoCairoATSUIFont *cafont = PANGO_CAIRO_ATSUI_FONT (font);
+  PangoCairoATSUIFont *cafont = (PangoCairoATSUIFont *) font;
   ATSFontRef ats_font;
   ATSFontMetrics ats_metrics;
   PangoFontMetrics *metrics;
@@ -259,7 +159,7 @@ create_metrics_for_context (PangoFont    *font,
   metrics->strikethrough_thickness = ats_metrics.underlineThickness * cafont->size * PANGO_SCALE;
 
   layout = pango_layout_new (context);
-  font_desc = pango_font_describe_with_absolute_size (font);
+  font_desc = pango_font_describe_with_absolute_size ((PangoFont *) font);
   pango_layout_set_font_description (layout, font_desc);
   pango_layout_set_text (layout, sample_str, -1);
   pango_layout_get_extents (layout, NULL, &extents);
@@ -275,65 +175,12 @@ create_metrics_for_context (PangoFont    *font,
   return metrics;
 }
 
-typedef struct
-{
-  const char *sample_str;
-  PangoFontMetrics *metrics;
-} PangoATSUIMetricsInfo;
-
-static PangoFontMetrics *
-pango_cairo_atsui_font_get_metrics (PangoFont        *font,
-				    PangoLanguage    *language)
-{
-  PangoCairoATSUIFont *cafont = PANGO_CAIRO_ATSUI_FONT (font);
-  PangoATSUIMetricsInfo *info;
-  GSList *tmp_list;
-  const char *sample_str = pango_language_get_sample_string (language);
-
-  tmp_list = cafont->metrics_by_lang;
-  while (tmp_list)
-    {
-      info = tmp_list->data;
-
-      if (info->sample_str == sample_str)    /* We _don't_ need strcmp */
-	break;
-
-      tmp_list = tmp_list->next;
-    }
-
-  if (!tmp_list)
-    {
-      PangoContext *context;
-
-      if (!pango_font_get_font_map (font))
-	return pango_font_metrics_new ();
-
-      info = g_slice_new0 (PangoATSUIMetricsInfo);
-
-      cafont->metrics_by_lang = g_slist_prepend (cafont->metrics_by_lang,
-						 info);
-
-      info->sample_str = sample_str;
-
-      context = pango_context_new ();
-      pango_context_set_font_map (context, pango_font_get_font_map (font));
-      pango_context_set_language (context, language);
-      pango_cairo_context_set_font_options (context, cafont->options);
-
-      info->metrics = create_metrics_for_context (font, context);
-
-      g_object_unref (context);
-    }
-
-  return pango_font_metrics_ref (info->metrics);
-}
-
 static PangoFontDescription *
 pango_cairo_atsui_font_describe_absolute (PangoFont *font)
 {
   PangoFontDescription *desc;
-  PangoATSUIFont *afont = PANGO_ATSUI_FONT (font);
-  PangoCairoATSUIFont *cafont = PANGO_CAIRO_ATSUI_FONT (font);
+  PangoATSUIFont *afont = (PangoATSUIFont *) font;
+  PangoCairoATSUIFont *cafont = (PangoCairoATSUIFont *) font;
 
   desc = pango_font_description_copy (afont->desc);
   pango_font_description_set_absolute_size (desc, cafont->absolute_size);
@@ -342,24 +189,8 @@ pango_cairo_atsui_font_describe_absolute (PangoFont *font)
 }
 
 static void
-free_metrics_info (PangoATSUIMetricsInfo *info)
-{
-  pango_font_metrics_unref (info->metrics);
-  g_slice_free (PangoATSUIMetricsInfo, info);
-}
-
-static void
 pango_cairo_atsui_font_finalize (GObject *object)
 {
-  PangoCairoATSUIFont *cafont = PANGO_CAIRO_ATSUI_FONT (object);
-
-  g_slist_foreach (cafont->metrics_by_lang, (GFunc)free_metrics_info, NULL);
-  g_slist_free (cafont->metrics_by_lang);
-
-  cairo_font_face_destroy (cafont->font_face);
-  cairo_scaled_font_destroy (cafont->scaled_font);
-  cairo_font_options_destroy (cafont->options);
-
   G_OBJECT_CLASS (pango_cairo_atsui_font_parent_class)->finalize (object);
 }
 
@@ -371,8 +202,8 @@ pango_cairo_atsui_font_class_init (PangoCairoATSUIFontClass *class)
 
   object_class->finalize = pango_cairo_atsui_font_finalize;
 
-  font_class->get_metrics = pango_cairo_atsui_font_get_metrics;
   font_class->get_glyph_extents = pango_cairo_atsui_font_get_glyph_extents;
+  font_class->get_metrics = _pango_cairo_font_get_metrics;
   font_class->describe_absolute = pango_cairo_atsui_font_describe_absolute;
 }
 
@@ -393,9 +224,10 @@ _pango_cairo_atsui_font_new (PangoCairoATSUIFontMap     *cafontmap,
   PangoATSUIFont *afont;
   CFStringRef cfstr;
   ATSFontRef font_ref;
-  const PangoMatrix *pango_ctm;
   ATSUFontID font_id;
+  double size;
   double dpi;
+  cairo_matrix_t font_matrix;
 
   postscript_name = _pango_atsui_face_get_postscript_name (face);
   
@@ -415,7 +247,6 @@ _pango_cairo_atsui_font_new (PangoCairoATSUIFontMap     *cafontmap,
       NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
       NSString *nsname;
       NSFont *nsfont, *converted_font;
-      gdouble size;
 
       size = (double) pango_font_description_get_size (desc) / PANGO_SCALE;
 
@@ -447,7 +278,7 @@ _pango_cairo_atsui_font_new (PangoCairoATSUIFontMap     *cafontmap,
   afont->desc = pango_font_description_copy (desc);
   afont->face = face;
 
-  cafont->size = (double) pango_font_description_get_size (desc) / PANGO_SCALE;
+  size = (double) pango_font_description_get_size (desc) / PANGO_SCALE;
   cafont->font_id = font_id;
 
   if (context)
@@ -463,35 +294,26 @@ _pango_cairo_atsui_font_new (PangoCairoATSUIFontMap     *cafontmap,
   cafont->absolute_size = pango_font_description_get_size (desc);
 
   if (!pango_font_description_get_size_is_absolute (desc))
-    cafont->size *= dpi / 72.;
-
-  cairo_matrix_init_scale (&cafont->font_matrix, cafont->size, cafont->size);
-  pango_ctm = pango_context_get_matrix (context);
-  if (pango_ctm)
-    cairo_matrix_init (&cafont->ctm,
-		       pango_ctm->xx,
-		       pango_ctm->yx,
-		       pango_ctm->xy,
-		       pango_ctm->yy,
-		       0., 0.);
-  else
-    cairo_matrix_init_identity (&cafont->ctm);
+    size *= dpi / 72.;
 
-  if (synthesize_italic)
-    {
-      cairo_matrix_t shear, result;
+  cafont->size = size;
 
-      /* Apply a shear matrix, matching what Cocoa does. */
-      cairo_matrix_init (&shear,
-			 1, 0, 
-			 0.25, 1,
-			 0, 0);
+  /* If necessary, apply a shear matrix, matching what Cocoa does. */
+  if (synthesize_italic)
+    cairo_matrix_init (&font_matrix,
+                       1, 0, 
+                       0.25, 1,
+                       0, 0);
+  else
+    cairo_matrix_init_identity (&font_matrix);
 
-      cairo_matrix_multiply (&result, &shear, &cafont->font_matrix);
-      cafont->font_matrix = result;
-    }
+  cairo_matrix_scale (&font_matrix, size, size);
 
-  cafont->options = cairo_font_options_copy (_pango_cairo_context_get_merged_font_options (context));
+  _pango_cairo_font_private_initialize (&cafont->cf_priv,
+					(PangoCairoFont *) cafont,
+					context,
+					desc,
+					&font_matrix);
 
   return afont;
 }