Start implementation of CoreText backend

On Mac OS X systems where CoreText is available (that is, 10.5 or
higher), we will build the CoreText backend instead of the ATSUI
backend.  In this case, the ATSUI backend will not be built and
installed.  This change is necessary because since Mac OS 10.5
ATSUI has been marked as deprecated.

For older systems, we will have to continue to use the
ATSUI backend.

1 files changed, 107 insertions, 0 deletions

diff --git a/pango/pangocairo-coretextfontmap.c b/pango/pangocairo-coretextfontmap.c
new file mode 100644
index 00000000..e05a1d40
--- /dev/null
+++ b/pango/pangocairo-coretextfontmap.c
@@ -0,0 +1,107 @@
+/* Pango
+ * pangocairo-coretextfontmap.c
+ *
+ * Copyright (C) 2005 Imendio AB
+ * Copyright (C) 2010  Kristian Rietveld  <kris@gtk.org>
+ *
+ * This library 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 library 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.
+ */
+
+#include "config.h"
+
+#include "pangocoretext-private.h"
+#include "pangocairo.h"
+#include "pangocairo-private.h"
+#include "pangocairo-coretext.h"
+
+typedef struct _PangoCairoCoreTextFontMapClass PangoCairoCoreTextFontMapClass;
+
+struct _PangoCairoCoreTextFontMapClass
+{
+  PangoCoreTextFontMapClass parent_class;
+};
+
+static void
+pango_cairo_core_text_font_map_set_resolution (PangoCairoFontMap *cfontmap,
+                                               double             dpi)
+{
+  PangoCairoCoreTextFontMap *cafontmap = PANGO_CAIRO_CORE_TEXT_FONT_MAP (cfontmap);
+
+  cafontmap->dpi = dpi;
+}
+
+static double
+pango_cairo_core_text_font_map_get_resolution (PangoCairoFontMap *cfontmap)
+{
+  PangoCairoCoreTextFontMap *cafontmap = PANGO_CAIRO_CORE_TEXT_FONT_MAP (cfontmap);
+
+  return cafontmap->dpi;
+}
+
+static cairo_font_type_t
+pango_cairo_core_text_font_map_get_font_type (PangoCairoFontMap *cfontmap)
+{
+  /* This is a bit misleading, but Cairo takes a CoreGraphics font
+   * for rendering and does not use ATSUI.
+   */
+  return CAIRO_FONT_TYPE_ATSUI;
+}
+
+static void
+cairo_font_map_iface_init (PangoCairoFontMapIface *iface)
+{
+  iface->set_resolution = pango_cairo_core_text_font_map_set_resolution;
+  iface->get_resolution = pango_cairo_core_text_font_map_get_resolution;
+  iface->get_font_type  = pango_cairo_core_text_font_map_get_font_type;
+}
+
+G_DEFINE_TYPE_WITH_CODE (PangoCairoCoreTextFontMap, pango_cairo_core_text_font_map, PANGO_TYPE_CORE_TEXT_FONT_MAP,
+    { G_IMPLEMENT_INTERFACE (PANGO_TYPE_CAIRO_FONT_MAP, cairo_font_map_iface_init) });
+
+
+static PangoCoreTextFont *
+pango_cairo_core_text_font_map_create_font (PangoCoreTextFontMap       *fontmap,
+                                            PangoContext               *context,
+                                            PangoCoreTextFace          *face,
+                                            const PangoFontDescription *desc)
+
+{
+  return _pango_cairo_core_text_font_new (PANGO_CAIRO_CORE_TEXT_FONT_MAP (fontmap),
+                                          context, face, desc);
+}
+
+static void
+pango_cairo_core_text_font_map_finalize (GObject *object)
+{
+  G_OBJECT_CLASS (pango_cairo_core_text_font_map_parent_class)->finalize (object);
+}
+
+static void
+pango_cairo_core_text_font_map_class_init (PangoCairoCoreTextFontMapClass *class)
+{
+  PangoCoreTextFontMapClass *ctfontmapclass = (PangoCoreTextFontMapClass *)class;
+  GObjectClass *object_class = (GObjectClass *)class;
+
+  object_class->finalize = pango_cairo_core_text_font_map_finalize;
+
+  ctfontmapclass->create_font = pango_cairo_core_text_font_map_create_font;
+}
+
+static void
+pango_cairo_core_text_font_map_init (PangoCairoCoreTextFontMap *cafontmap)
+{
+  cafontmap->dpi = 72.;
+}