GwyDataViewLayer (HEAD)

GwyDataViewLayer — Layer GwyDataView is composed of

Functions

void	gwy_data_view_layer_plugged ()
void	gwy_data_view_layer_unplugged ()
void	gwy_data_view_layer_updated ()
void	gwy_data_view_layer_realize ()
void	gwy_data_view_layer_unrealize ()

Signals

void	plugged	Run First
void	unplugged	Run First
void	updated	Run First

Types and Values

struct	GwyDataViewLayer
struct	GwyDataViewLayerClass

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GtkObject
            ╰── GwyDataViewLayer
                ├── GwyPixmapLayer
                ╰── GwyVectorLayer

Includes

#include <libgwydgets/gwydgets.h>

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.

Functions

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.

Parameters

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.

Parameters

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.

Parameters

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.

Parameters

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.

Parameters

layer

A data view layer.

Types and Values

struct GwyDataViewLayer

struct GwyDataViewLayer;

struct GwyDataViewLayerClass

struct GwyDataViewLayerClass {
    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);
};

Signal Details

The “plugged” signal

void
user_function (GwyDataViewLayer *gwydataviewlayer,
               gpointer          user_data)

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

Parameters

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

Flags: Run First

The “unplugged” signal

void
user_function (GwyDataViewLayer *gwydataviewlayer,
               gpointer          user_data)

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

Parameters

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

Flags: Run First

The “updated” signal

void
user_function (GwyDataViewLayer *gwydataviewlayer,
               gpointer          user_data)

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

Parameters

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

Flags: Run First

See Also

GwyDataView -- data display widget,

gwypixfield --

low level functions for painting data fields,