GnomeDbCanvasItem

GnomeDbCanvasItem — Base class for all the GnomeCanvasItem derived widgets in libgnomedb.

Synopsis




struct      GnomeDbCanvasItem;
GnomeDbCanvas* gnome_db_canvas_item_get_canvas
                                            (GnomeDbCanvasItem *item);
GdaGraphItem* gnome_db_canvas_item_get_graph_item
                                            (GnomeDbCanvasItem *item);

Object Hierarchy


  GObject
   +----GInitiallyUnowned
         +----GtkObject
               +----GnomeCanvasItem
                     +----GnomeCanvasGroup
                           +----GnomeDbCanvasItem
                                 +----GnomeDbCanvasCursor
                                 +----GnomeDbCanvasEntity
                                 +----GnomeDbCanvasText
                                 +----GnomeDbCanvasFkconstraint
                                 +----GnomeDbCanvasJoin

Properties


  "allow-drag"           gboolean             : Read / Write
  "allow-move"           gboolean             : Read / Write
  "graph-item"           gpointer             : Read / Write
  "tip-text"             gchararray           : Read / Write

Signal Prototypes


"drag-action"
            void        user_function      (GnomeDbCanvasItem *dbcanvasitem,
                                            gpointer arg1,
                                            gpointer arg2,
                                            gpointer user_data);
"moved"     void        user_function      (GnomeDbCanvasItem *dbcanvasitem,
                                            gpointer user_data);
"moving"    void        user_function      (GnomeDbCanvasItem *dbcanvasitem,
                                            gpointer user_data);
"shifted"   void        user_function      (GnomeDbCanvasItem *dbcanvasitem,
                                            gpointer user_data);

Description

This object adds some functionnalities on top of the GnomeCanvasItem objects such as synchronisation with a GdaGraphItem object (to have a persistent position on the canvas), the ability to be moved on the canvas, and the ability to initiate and report simple drag and drop within the canvas.

Details

struct GnomeDbCanvasItem

struct GnomeDbCanvasItem;

gnome_db_canvas_item_get_canvas ()

GnomeDbCanvas* gnome_db_canvas_item_get_canvas
                                            (GnomeDbCanvasItem *item);

Get the GnomeDbCanvas on which item is drawn

`item` :	a GnomeDbCanvasItem object
Returns :	the GnomeDbCanvas widget

gnome_db_canvas_item_get_graph_item ()

GdaGraphItem* gnome_db_canvas_item_get_graph_item
                                            (GnomeDbCanvasItem *item);

Get the associated GdaGraphItem to item.

`item` :	a GnomeDbCanvasItem object
Returns :	the GdaGraphItem, or `NULL`

Properties

"`allow-drag`" (gboolean : Read / Write)
"`allow-move`" (gboolean : Read / Write)
"`graph-item`" (gpointer : Read / Write)
"`tip-text`" (gchararray : Read / Write)

Signals

The "drag-action" signal

void        user_function                  (GnomeDbCanvasItem *dbcanvasitem,
                                            gpointer arg1,
                                            gpointer arg2,
                                            gpointer user_data);

`dbcanvasitem` :	the object which received the signal.
`arg1` :
`arg2` :
`user_data` :	user data set when the signal handler was connected.

The "moved" signal

void        user_function                  (GnomeDbCanvasItem *dbcanvasitem,
                                            gpointer user_data);

`dbcanvasitem` :	the object which received the signal.
`user_data` :	user data set when the signal handler was connected.

The "moving" signal

void        user_function                  (GnomeDbCanvasItem *dbcanvasitem,
                                            gpointer user_data);

`dbcanvasitem` :	the object which received the signal.
`user_data` :	user data set when the signal handler was connected.

The "shifted" signal

void        user_function                  (GnomeDbCanvasItem *dbcanvasitem,
                                            gpointer user_data);

`dbcanvasitem` :	the object which received the signal.
`user_data` :	user data set when the signal handler was connected.