DiaCanvasViewItem

Name

DiaCanvasViewItem -- Object that contains the visual representation of a DiaCanvasItem.

Synopsis



#define     DIA_CANVAS_VIEW_ITEM            (obj)
struct      DiaCanvasViewItem;
void        dia_canvas_view_item_add_items  (GnomeCanvasGroup *vitem,
                                             DiaCanvasItem *item);
gint        (*DiaCanvasViewItemForeachFunc) (DiaCanvasViewItem *item,
                                             gpointer data);
gint        dia_canvas_view_item_foreach    (DiaCanvasViewItem *item,
                                             DiaCanvasViewItemForeachFunc func,
                                             gpointer data);
gboolean    dia_canvas_view_item_has_focus  (DiaCanvasViewItem *item);
gboolean    dia_canvas_view_item_is_selected
                                            (DiaCanvasViewItem *item);

Object Hierarchy


  GObject
   +----GtkObject
         +----GnomeCanvasItem
               +----GnomeCanvasGroup
                     +----DiaCanvasViewItem

Properties


  "item"                 DiaCanvasItem        : Read / Write

Description

See DiaCanvasViewItem.

Details

DIA_CANVAS_VIEW_ITEM()

#define DIA_CANVAS_VIEW_ITEM(obj)	(GTK_CHECK_CAST ((obj), DIA_TYPE_CANVAS_VIEW_ITEM, DiaCanvasViewItem))

Cast an object to a DiaCanvasViewItem.

obj :


struct DiaCanvasViewItem

struct DiaCanvasViewItem;

A DiaCanvasViewItem holds information about a DiaCanvasItem that is specific for one view (e.g. a cursor position for text, an object is selected, rendering information).

Information about the DiaShapes that have to be rendered are held in DiaCanvasItem::shapes. The shapes contain a list of DiaShapeItemInfo objects, which contain some DiaCanvasViewItem specific rendering data (like SVP's and scaled images).


dia_canvas_view_item_add_items ()

void        dia_canvas_view_item_add_items  (GnomeCanvasGroup *vitem,
                                             DiaCanvasItem *item);

Add an item to the DiaCanvasView's tree and connect some signals so it can automatically update itself when something changes

vitem is of type GnomeCanvasGroup, since the real root item of the DiaCanvasView is actually a GnomeCanvasGroup.

This function is used internally.

So, item is added to the canvas and now we should create a new child to vitem in order to update the DiaCanvasView (GnomeCanvas).

vitem :

item :


DiaCanvasViewItemForeachFunc ()

gint        (*DiaCanvasViewItemForeachFunc) (DiaCanvasViewItem *item,
                                             gpointer data);

Prototype of the function used by dia_canvas_view_item_foreach().

item :

data :

Returns :


dia_canvas_view_item_foreach ()

gint        dia_canvas_view_item_foreach    (DiaCanvasViewItem *item,
                                             DiaCanvasViewItemForeachFunc func,
                                             gpointer data);

Call func for each canvas view item. If func returns FALSE, no more items are called.

Call every DiaCanvasViewItem starting with item and processing all children until func returns TRUE.

item :

func :

data :

Returns :


dia_canvas_view_item_has_focus ()

gboolean    dia_canvas_view_item_has_focus  (DiaCanvasViewItem *item);

item :

Returns :


dia_canvas_view_item_is_selected ()

gboolean    dia_canvas_view_item_is_selected
                                            (DiaCanvasViewItem *item);

item :

Returns :

Properties

"item" (DiaCanvasItem : Read / Write)

See Also

DiaCanvasView.