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Libmergeant Reference Manual | ![]() |
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MgCanvasItemMgCanvasItem — Base class for all the GnomeCanvasItem derived widgets in libmergeant. |
MgCanvasItem; guint mg_canvas_item_get_type (void); MgCanvas* mg_canvas_item_get_canvas (MgCanvasItem *item); MgGraphItem* mg_canvas_item_get_graph_item (MgCanvasItem *item);
GObject +----GInitiallyUnowned +----GtkObject +----GnomeCanvasItem +----GnomeCanvasGroup +----MgCanvasItem +----MgCanvasCursor +----MgCanvasText +----MgCanvasEntity
"allow-drag" gboolean : Read / Write "allow-move" gboolean : Read / Write "graph-item" gpointer : Read / Write "tip-text" gchararray : Read / Write
"drag-action" void user_function (MgCanvasItem *mgcanvasitem, gpointer arg1, gpointer arg2, gpointer user_data) : Run first "moved" void user_function (MgCanvasItem *mgcanvasitem, gpointer user_data) : Run first "moving" void user_function (MgCanvasItem *mgcanvasitem, gpointer user_data) : Run first "shifted" void user_function (MgCanvasItem *mgcanvasitem, gpointer user_data) : Run first
This object adds some functionnalities on top of the GnomeCanvasItem objects such as synchronisation with a MgGraphItem 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.
MgCanvas* mg_canvas_item_get_canvas (MgCanvasItem *item);
Get the MgCanvas on which item
is drawn
item : |
a MgCanvasItem object |
Returns : | the MgCanvas widget |
MgGraphItem* mg_canvas_item_get_graph_item (MgCanvasItem *item);
Get the associated MgGraphItem to item
.
item : |
a MgCanvasItem object |
Returns : | the MgGraphItem, or NULL
|
void user_function (MgCanvasItem *mgcanvasitem, gpointer arg1, gpointer arg2, gpointer user_data) : Run first
mgcanvasitem : |
the object which received the signal. |
arg1 : |
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user_data : |
user data set when the signal handler was connected. |
void user_function (MgCanvasItem *mgcanvasitem, gpointer user_data) : Run first
mgcanvasitem : |
the object which received the signal. |
user_data : |
user data set when the signal handler was connected. |
void user_function (MgCanvasItem *mgcanvasitem, gpointer user_data) : Run first
mgcanvasitem : |
the object which received the signal. |
user_data : |
user data set when the signal handler was connected. |
void user_function (MgCanvasItem *mgcanvasitem, gpointer user_data) : Run first
mgcanvasitem : |
the object which received the signal. |
user_data : |
user data set when the signal handler was connected. |