1 files changed, 99 insertions, 0 deletions
diff --git a/pango-view/viewer.h b/pango-view/viewer.h
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+++ b/pango-view/viewer.h
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+/* viewer.h: PangoViewer class
+ *
+ * Copyright (C) 1999,2004,2005 Red Hat, Inc.
+ * Copyright (C) 2001 Sun Microsystems
+ *
+ * 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.
+ */
+#ifndef VIEWER_H
+#define VIEWER_H
+
+#include <stdio.h>
+#include <pango/pango.h>
+
+typedef struct _PangoViewer PangoViewer;
+
+struct _PangoViewer {
+
+  const char *name;
+
+  const char *id;
+
+  const char *write_suffix;
+
+  gpointer (*create) (const PangoViewer *klass);
+
+  void (*destroy) (gpointer instance);
+
+  PangoContext * (*get_context) (gpointer instance);
+
+  gpointer (*create_surface) (gpointer instance,
+			      int      width,
+			      int      height);
+
+  void (*destroy_surface) (gpointer instance,
+			   gpointer surface);
+
+  void (*render) (gpointer      instance,
+		  gpointer      surface,
+		  PangoContext *context,
+		  int           width,
+		  int           height,
+		  gpointer      state);
+
+  /* The following can be NULL */
+
+  void (*write) (gpointer instance,
+		 gpointer surface,
+		 FILE    *stream,
+		 int      width,
+		 int      height);
+
+  gpointer (*create_window) (gpointer    instance,
+			     const char *title,
+			     int         width,
+			     int         height);
+
+  void (*destroy_window) (gpointer instance,
+			  gpointer window);
+
+  gpointer (*display) (gpointer instance,
+		       gpointer surface,
+		       gpointer window,
+		       int      width,
+		       int      height,
+		       gpointer state);
+
+  void (*load) (gpointer instance,
+		gpointer surface,
+		guchar  *buffer,
+		int      width,
+		int      height,
+		int      stride);
+
+  void (*save) (gpointer instance,
+		gpointer surface,
+		guchar  *buffer,
+		int      width,
+		int      height,
+		int      stride);
+
+};
+
+extern const PangoViewer *fallback_viewer;
+extern const PangoViewer *viewers[];
+
+#endif /* VIEWER_H */