GwyDataViewLayer

GwyDataViewLayer — Layer GwyDataView is composed of

Synopsis




                    GwyDataViewLayer;
                    GwyDataViewLayerClass;
void                gwy_data_view_layer_plugged         (GwyDataViewLayer *layer);
void                gwy_data_view_layer_unplugged       (GwyDataViewLayer *layer);
void                gwy_data_view_layer_updated         (GwyDataViewLayer *layer);
void                gwy_data_view_layer_realize         (GwyDataViewLayer *layer);
void                gwy_data_view_layer_unrealize       (GwyDataViewLayer *layer);

Object Hierarchy


  GObject
   +----GInitiallyUnowned
         +----GtkObject
               +----GwyDataViewLayer
                     +----GwyPixmapLayer
                     +----GwyVectorLayer

Signals


  "plugged"                                        : Run First
  "unplugged"                                      : Run First
  "updated"                                        : Run First

Description

GwyDataViewLayer's are parts of GwyDataView. They are not widgets and they are not normally usable outside of a data view. The perform a specific visualization task: drawing the data, drawing mask, or drawing selection.

Details

GwyDataViewLayer

typedef struct _GwyDataViewLayer GwyDataViewLayer;


GwyDataViewLayerClass

typedef struct {
    GtkObjectClass parent_class;

    /* Virtual table */
    void (*realize)(GwyDataViewLayer *layer);
    void (*unrealize)(GwyDataViewLayer *layer);

    /* Signals */
    void (*plugged)(GwyDataViewLayer *layer);
    void (*unplugged)(GwyDataViewLayer *layer);
    void (*updated)(GwyDataViewLayer *layer);

    void (*reserved1)(void);
    void (*reserved2)(void);
} GwyDataViewLayerClass;


gwy_data_view_layer_plugged ()

void                gwy_data_view_layer_plugged         (GwyDataViewLayer *layer);

Emits a "plugged" singal on a layer.

Primarily intended for GwyDataView implementation.

layer : A data view layer.

gwy_data_view_layer_unplugged ()

void                gwy_data_view_layer_unplugged       (GwyDataViewLayer *layer);

Emits a "unplugged" singal on a layer.

Primarily intended for GwyDataView implementation.

layer : A data view layer.

gwy_data_view_layer_updated ()

void                gwy_data_view_layer_updated         (GwyDataViewLayer *layer);

Emits a "updated" singal on a layer.

layer : A data view layer.

gwy_data_view_layer_realize ()

void                gwy_data_view_layer_realize         (GwyDataViewLayer *layer);

Tells a data view layer its parent was realized and it can create display-specific resources.

layer : A data view layer.

gwy_data_view_layer_unrealize ()

void                gwy_data_view_layer_unrealize       (GwyDataViewLayer *layer);

Tells a data view layer its parent was unrealized and it should destroy display-specific resources.

layer : A data view layer.

Signal Details

The "plugged" signal

void                user_function                      (GwyDataViewLayer *gwydataviewlayer,
                                                        gpointer          user_data)             : Run First

The ::plugged signal is emitted when a GwyDataViewLayer is plugged into a GwyDataView.

gwydataviewlayer : The GwyDataViewLayer which received the signal.
user_data : user data set when the signal handler was connected.

The "unplugged" signal

void                user_function                      (GwyDataViewLayer *gwydataviewlayer,
                                                        gpointer          user_data)             : Run First

The ::unplugged signal is emitted when a GwyDataViewLayer is removed from its GwyDataView.

gwydataviewlayer : The GwyDataViewLayer which received the signal.
user_data : user data set when the signal handler was connected.

The "updated" signal

void                user_function                      (GwyDataViewLayer *gwydataviewlayer,
                                                        gpointer          user_data)             : Run First

The ::updated signal is emitted when a GwyDataViewLayer is updated; the exact means how a layer can be updated depends its type.

gwydataviewlayer : The GwyDataViewLayer which received the signal.
user_data : user data set when the signal handler was connected.

See Also

GwyDataView -- data display widget, gwypixfield -- low level functions for painting data fields,