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GNOME Data Access 3.0 manual | ![]() |
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GdaGraphItemGdaGraphItem — Parts of data model used with the GdaGraph object. |
GdaGraphItem; GObject* gda_graph_item_new (GdaDict *dict, GdaObject *ref_obj); void gda_graph_item_set_position (GdaGraphItem *item, gdouble x, gdouble y); void gda_graph_item_get_position (GdaGraphItem *item, gdouble *x, gdouble *y); GdaObject* gda_graph_item_get_ref_object (GdaGraphItem *item);
Each graph item which needs to have its position kept in the GdaDict object (and written in the dictionary file) has a corresponding GdaGraphItem object. A graph item can hold a reference to any GdaObject object, meaning that the position it stores is the position where the references object's graphical representation will be on the canvas.
GObject* gda_graph_item_new (GdaDict *dict, GdaObject *ref_obj);
Creates a new GdaGraphItem object
void gda_graph_item_set_position (GdaGraphItem *item, gdouble x, gdouble y);
Sets the position to be remembered for item
.
item : |
a GdaGraphItemItem object |
x : |
|
y : |
void gda_graph_item_get_position (GdaGraphItem *item, gdouble *x, gdouble *y);
Get item
's position.
item : |
a GdaGraphItemItem object |
x : |
a place where to store the X part of the position, or NULL
|
y : |
a place where to store the Y part of the position, or NULL
|
GdaObject* gda_graph_item_get_ref_object (GdaGraphItem *item);
Get the referenced GdaObject object, if it exists.
item : |
a GdaGraphItem object |
Returns : | the referenced object, or NULL
|
void user_function (GdaGraphItem *gdagraphitem, gpointer user_data) : Run First
gdagraphitem : |
the object which received the signal. |
user_data : |
user data set when the signal handler was connected. |