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gtk-canvas-widget.h

/* Widget item type for GtkCanvas widget
 *
 * GtkCanvas 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 The Free Software Foundation
 *
 * Author: Federico Mena <federico@nuclecu.unam.mx>
 */

#ifndef GTK_CANVAS_WIDGET_H
#define GTK_CANVAS_WIDGET_H

#include <gtk-canvas/gtk-canvas-defs.h>
#include <gtk/gtkpacker.h> /* why the hell is GtkAnchorType here and not in gtkenums.h? */
#include "gtk-canvas/gtk-canvas.h"


BEGIN_GTK_CANVAS_DECLS


/* Widget item for canvas.  The widget is positioned with respect to an anchor point.
 * The following object arguments are available:
 *
 * name                 type              read/write  description
 * ------------------------------------------------------------------------------------------
 * widget         GtkWidget*        RW          Pointer to the widget
 * x              double                  RW          X coordinate of anchor point
 * y              double                  RW          Y coordinate of anchor point
 * width          double                  RW          Width of widget (see below)
 * height         double                  RW          Height of widget (see below)
 * anchor         GtkAnchorType           RW          Anchor side for widget
 * size_pixels          boolean                 RW          Specifies whether the widget size
 *                                              is specified in pixels or canvas units.
 *                                              If it is in pixels, then the widget will not
 *                                              be scaled when the canvas zoom factor changes.
 *                                              Otherwise, it will be scaled.
 */


#define GTK_CANVAS_TYPE_CANVAS_WIDGET            (gtk_canvas_widget_get_type ())
#define GTK_CANVAS_WIDGET(obj)            (GTK_CHECK_CAST ((obj), GTK_CANVAS_TYPE_CANVAS_WIDGET, GtkCanvasWidget))
#define GTK_CANVAS_WIDGET_CLASS(klass)    (GTK_CHECK_CLASS_CAST ((klass), GTK_CANVAS_TYPE_CANVAS_WIDGET, GtkCanvasWidgetClass))
#define GTK_CANVAS_IS_CANVAS_WIDGET(obj)         (GTK_CHECK_TYPE ((obj), GTK_CANVAS_TYPE_CANVAS_WIDGET))
#define GTK_CANVAS_IS_CANVAS_WIDGET_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GTK_CANVAS_TYPE_CANVAS_WIDGET))


typedef struct _GtkCanvasWidget GtkCanvasWidget;
typedef struct _GtkCanvasWidgetClass GtkCanvasWidgetClass;

struct _GtkCanvasWidget {
      GtkCanvasItem item;

      GtkWidget *widget;            /* The child widget */

      double x, y;                  /* Position at anchor */
      double width, height;         /* Dimensions of widget */
      GtkAnchorType anchor;         /* Anchor side for widget */

      int cx, cy;             /* Top-left canvas coordinates for widget */
      int cwidth, cheight;          /* Size of widget in pixels */

      guint destroy_id;       /* Signal connection id for destruction of child widget */

      guint size_pixels : 1;        /* Is size specified in (unchanging) pixels or units (get scaled)? */
      guint in_destroy : 1;         /* Is child widget being destroyed? */
};

struct _GtkCanvasWidgetClass {
      GtkCanvasItemClass parent_class;
};


/* Standard Gtk function */
GtkType gtk_canvas_widget_get_type (void);


END_GTK_CANVAS_DECLS

#endif

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