libfoocanvas/foo-canvas-widget.h

   1 /*
   2  * Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation
   3  * All rights reserved.
   4  *
   5  * This file is part of the Gnome Library.
   6  *
   7  * The Gnome Library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public License as
   9  * published by the Free Software Foundation; either version 2 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * The Gnome Library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public
  18  * License along with the Gnome Library; see the file COPYING.LIB.  If not,
  19  * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22 /*
  23   @NOTATION@
  24  */
  25 /* Widget item type for FooCanvas widget
  26  *
  27  * FooCanvas is basically a port of the Tk toolkit's most excellent canvas widget.  Tk is
  28  * copyrighted by the Regents of the University of California, Sun Microsystems, and other parties.
  29  *
  30  *
  31  * Author: Federico Mena <federico@nuclecu.unam.mx>
  32  */
  33
  34 #ifndef FOO_CANVAS_WIDGET_H
  35 #define FOO_CANVAS_WIDGET_H
  36
  37
  38 #include <libfoocanvas/foo-canvas.h>
  39
  40
  41 G_BEGIN_DECLS
  42
  43
  44 /* Widget item for canvas.  The widget is positioned with respect to an anchor point.
  45  * The following object arguments are available:
  46  *
  47  * name                 type                    read/write      description
  48  * ------------------------------------------------------------------------------------------
  49  * widget               GtkWidget*              RW              Pointer to the widget
  50  * x                    double                  RW              X coordinate of anchor point
  51  * y                    double                  RW              Y coordinate of anchor point
  52  * width                double                  RW              Width of widget (see below)
  53  * height               double                  RW              Height of widget (see below)
  54  * anchor               GtkAnchorType           RW              Anchor side for widget
  55  * size_pixels          boolean                 RW              Specifies whether the widget size
  56  *                                                              is specified in pixels or canvas units.
  57  *                                                              If it is in pixels, then the widget will not
  58  *                                                              be scaled when the canvas zoom factor changes.
  59  *                                                              Otherwise, it will be scaled.
  60  */
  61
  62
  63 #define FOO_TYPE_CANVAS_WIDGET            (foo_canvas_widget_get_type ())
  64 #define FOO_CANVAS_WIDGET(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), FOO_TYPE_CANVAS_WIDGET, FooCanvasWidget))
  65 #define FOO_CANVAS_WIDGET_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), FOO_TYPE_CANVAS_WIDGET, FooCanvasWidgetClass))
  66 #define FOO_IS_CANVAS_WIDGET(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), FOO_TYPE_CANVAS_WIDGET))
  67 #define FOO_IS_CANVAS_WIDGET_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), FOO_TYPE_CANVAS_WIDGET))
  68 #define FOO_CANVAS_WIDGET_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), FOO_TYPE_CANVAS_WIDGET, FooCanvasWidgetClass))
  69
  70
  71 typedef struct _FooCanvasWidget FooCanvasWidget;
  72 typedef struct _FooCanvasWidgetClass FooCanvasWidgetClass;
  73
  74 struct _FooCanvasWidget {
  75         FooCanvasItem item;
  76
  77         GtkWidget *widget;              /* The child widget */
  78
  79         double x, y;                    /* Position at anchor */
  80         double width, height;           /* Dimensions of widget */
  81         GtkAnchorType anchor;           /* Anchor side for widget */
  82
  83         int cx, cy;                     /* Top-left canvas coordinates for widget */
  84         int cwidth, cheight;            /* Size of widget in pixels */
  85
  86         guint destroy_id;               /* Signal connection id for destruction of child widget */
  87
  88         guint size_pixels : 1;          /* Is size specified in (unchanging) pixels or units (get scaled)? */
  89         guint in_destroy : 1;           /* Is child widget being destroyed? */
  90 };
  91
  92 struct _FooCanvasWidgetClass {
  93         FooCanvasItemClass parent_class;
  94 };
  95
  96
  97 /* Standard Gtk function */
  98 GType foo_canvas_widget_get_type (void) G_GNUC_CONST;
  99
 100
 101 G_END_DECLS
 102
 103 #endif