source: trunk/third/libgnomecanvas/libgnomecanvas/gnome-canvas-shape-private.h @ 18323

#ifndef GNOME_CANVAS_SHAPE_PRIVATE_H
#define GNOME_CANVAS_SHAPE_PRIVATE_H

/* Bpath item type for GnomeCanvas widget
 *
 * GnomeCanvas is basically a port of the Tk toolkit's most excellent canvas widget.  Tk is
 * copyrighted by the Regents of the University of California, Sun Microsystems, and other parties.
 *
 * Copyright (C) 1998,1999 The Free Software Foundation
 *
 * Authors: Federico Mena <federico@nuclecu.unam.mx>
 *          Raph Levien <raph@acm.org>
 *          Lauris Kaplinski <lauris@ariman.ee>
 */

#include <gdk/gdk.h>
#include <libart_lgpl/art_vpath.h>
#include <libart_lgpl/art_svp.h>
#include <libart_lgpl/art_vpath_dash.h>
#include <libart_lgpl/art_svp_wind.h>
#include <libgnomecanvas/gnome-canvas.h>

#include <libgnomecanvas/gnome-canvas-path-def.h>

G_BEGIN_DECLS

typedef struct _GnomeCanvasShapePrivGdk GnomeCanvasShapePrivGdk;
typedef struct _GCBPDrawCtx GCBPDrawCtx;

/* Per canvas private structure, holding necessary data for rendering
 * temporary masks, which are needed for drawing multipart bpaths.
 * As canvas cannot multithread, we can be sure, that masks are used
 * serially, also one set of masks per canvas is sufficent to guarantee,
 * that masks are created on needed X server. Masks grow as needed.
 * Full structure is refcounted in Bpath implementation
 */

struct _GCBPDrawCtx {
        gint refcount;

        GnomeCanvas * canvas;

        gint width;
        gint height;

        GdkBitmap * mask;
        GdkBitmap * clip;

        GdkGC * clear_gc;
        GdkGC * xor_gc;
};

/* Per Bpath private structure, holding Gdk specific data */

struct _GnomeCanvasShapePrivGdk {
        gulong fill_pixel;              /* Color for fill */
        gulong outline_pixel;           /* Color for outline */

        GdkBitmap *fill_stipple;        /* Stipple for fill */
        GdkBitmap *outline_stipple;     /* Stipple for outline */

        GdkGC * fill_gc;                /* GC for filling */
        GdkGC * outline_gc;             /* GC for outline */

        gint len_points;                /* Size of allocated points array */
        gint num_points;                /* Gdk points in canvas coords */
        GdkPoint * points;              /* Ivariant: closed paths are before open ones */
        GSList * closed_paths;          /* List of lengths */
        GSList * open_paths;            /* List of lengths */

        GCBPDrawCtx * ctx;              /* Pointer to per-canvas drawing context */
};

struct _GnomeCanvasShapePriv {
        GnomeCanvasPathDef * path;      /* Our bezier path representation */

        gdouble scale;                  /* CTM scaling (for pen) */

        guint fill_set : 1;             /* Is fill color set? */
        guint outline_set : 1;          /* Is outline color set? */
        guint width_pixels : 1;         /* Is outline width specified in pixels or units? */

        double width;                   /* Width of outline, in user coords */

        guint32 fill_rgba;              /* Fill color, RGBA */
        guint32 outline_rgba;           /* Outline color, RGBA */

        GdkCapStyle cap;                /* Cap style for line */
        GdkJoinStyle join;              /* Join style for line */
        ArtWindRule wind;               /* Winding rule */
        double miterlimit;              /* Miter limit */

        ArtVpathDash dash;              /* Dashing pattern */

        ArtSVP * fill_svp;              /* The SVP for the filled shape */
        ArtSVP * outline_svp;           /* The SVP for the outline shape */

        GnomeCanvasShapePrivGdk * gdk;  /* Gdk specific things */
};

G_END_DECLS

#endif