source: trunk/third/librsvg/rsvg-private.h @ 18805

/* vim: set sw=4: -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/*
   rsvg-private.h: Internals of RSVG

   Copyright (C) 2000 Eazel, Inc.
   Copyright (C) 2002 Dom Lachowicz <cinamod@hotmail.com>

   This program 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 program 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 program; if not, write to the
   Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.

   Author: Raph Levien <raph@artofcode.com>
*/

#ifndef RSVG_PRIVATE_H
#define RSVG_PRIVATE_H

#include "rsvg.h"
#include "rsvg-styles.h"

#include <libxml/SAX.h>
#include <libxml/xmlmemory.h>

G_BEGIN_DECLS

typedef struct RsvgSaxHandler RsvgSaxHandler;

struct RsvgSaxHandler {
        void (*free) (RsvgSaxHandler *self);
        void (*start_element) (RsvgSaxHandler *self, const xmlChar *name, const xmlChar **atts);
        void (*end_element) (RsvgSaxHandler *self, const xmlChar *name);
        void (*characters) (RsvgSaxHandler *self, const xmlChar *ch, int len);
};

struct RsvgHandle {
        RsvgSizeFunc size_func;
        gpointer user_data;
        GDestroyNotify user_data_destroy;
        GdkPixbuf *pixbuf;
        
        /* stack; there is a state for each element */
        RsvgState *state;
        int n_state;
        int n_state_max;
        
        RsvgDefs *defs;
        gboolean in_defs;
        GHashTable *css_props;
        
        /* not a handler stack. each nested handler keeps
         * track of its parent
         */
        RsvgSaxHandler *handler;
        int handler_nest;
        
        GHashTable *entities; /* g_malloc'd string -> xmlEntityPtr */
        
        PangoContext *pango_context;
        xmlParserCtxtPtr ctxt;
        GError **error;
        
        int width;
        int height;
        double dpi;
        
        /* virtual fns */
        gboolean (* write) (RsvgHandle    *handle,
                                                const guchar  *buf,
                                                gsize          count,
                                                GError       **error);
        
        gboolean (* close) (RsvgHandle  *handle,
                                                GError     **error);

        void (* free) (RsvgHandle * handle);
};

void rsvg_linear_gradient_free (RsvgDefVal *self);
void rsvg_radial_gradient_free (RsvgDefVal *self);

/* "super"/parent calls */
void rsvg_handle_init (RsvgHandle * handle);
gboolean rsvg_handle_write_impl (RsvgHandle    *handle,
                                                                 const guchar  *buf,
                                                                 gsize          count,
                                                                 GError       **error);
gboolean rsvg_handle_close_impl (RsvgHandle  *handle, 
                                                                 GError     **error);
void rsvg_handle_free_impl (RsvgHandle *handle);

G_END_DECLS

#endif