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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 */
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