Socket

Together with GtkPlug, GtkSocket provides the ability to embed widgets from one process into another process in a fashion that is transparent to the user. One process creates a GtkSocket widget and passes that widget's window ID to the other process, which then creates a GtkPlug with that window ID. Any widgets contained in the GtkPlug then will appear inside the first application's window.

The socket's window ID is obtained by using gtk_socket_get_id(). Before using this function, the socket must have been realized, and for hence, have been added to its parent.

Note that if you pass the window ID of the socket to another process that will create a plug in the socket, you must make sure that the socket widget is not destroyed until that plug is created. Violating this rule will cause unpredictable consequences, the most likely consequence being that the plug will appear as a separate toplevel window. You can check if the plug has been created by using gtk_socket_get_plug_window(). If it returns a non-NULL value, then the plug has been successfully created inside of the socket.

When GTK+ is notified that the embedded window has been destroyed, then it will destroy the socket as well. You should always, therefore, be prepared for your sockets to be destroyed at any time when the main event loop is running. To prevent this from happening, you can connect to the "plug-removed" signal.

The communication between a GtkSocket and a GtkPlug follows the XEmbed protocol. This protocol has also been implemented in other toolkits, e.g. Qt, allowing the same level of integration when embedding a Qt widget in GTK or vice versa.

Note

The GtkPlug and GtkSocket widgets are only available when GTK+ is compiled for the X11 platform and GDK_WINDOWING_X11 is defined. They can only be used on a GdkX11Display. To use GtkPlug and GtkSocket, you need to include the gtk/gtkx.h header.

Constructors

this
this(GtkSocket* gtkSocket)

Sets our main struct and passes it to the parent class

this
this()

Create a new empty GtkSocket.

Members

Functions

addId
void addId(gulong window)

Adds an XEMBED client, such as a GtkPlug, to the GtkSocket. The client may be in the same process or in a different process. To embed a GtkPlug in a GtkSocket, you can either create the GtkPlug with gtk_plug_new (0), call gtk_plug_get_id() to get the window ID of the plug, and then pass that to the gtk_socket_add_id(), or you can call gtk_socket_get_id() to get the window ID for the socket, and call gtk_plug_new() passing in that ID. The GtkSocket must have already be added into a toplevel window before you can make this call.

addOnPlugAdded
void addOnPlugAdded(void delegate(Socket) dlg, ConnectFlags connectFlags)

This signal is emitted when a client is successfully added to the socket.

addOnPlugRemoved
void addOnPlugRemoved(bool delegate(Socket) dlg, ConnectFlags connectFlags)

This signal is emitted when a client is removed from the socket. The default action is to destroy the GtkSocket widget, so if you want to reuse it you must add a signal handler that returns TRUE. TRUE to stop other handlers from being invoked. See Also GtkPlug, XEmbed

getId
gulong getId()

Gets the window ID of a GtkSocket widget, which can then be used to create a client embedded inside the socket, for instance with gtk_plug_new(). The GtkSocket must have already be added into a toplevel window before you can make this call.

getPlugWindow
GdkWindow* getPlugWindow()

Retrieves the window of the plug. Use this to check if the plug has been created inside of the socket. Since 2.14 Signal Details The "plug-added" signal void user_function (GtkSocket *socket_, gpointer user_data) : Run Last This signal is emitted when a client is successfully added to the socket.

getSocketStruct
GtkSocket* getSocketStruct()

Get the main Gtk struct

getStruct
void* getStruct()

the main Gtk struct as a void*

setStruct
void setStruct(GObject* obj)
Undocumented in source. Be warned that the author may not have intended to support it.

Static functions

callBackPlugAdded
void callBackPlugAdded(GtkSocket* socketStruct, Socket _socket)
Undocumented in source. Be warned that the author may not have intended to support it.
callBackPlugRemoved
gboolean callBackPlugRemoved(GtkSocket* socketStruct, Socket _socket)
Undocumented in source. Be warned that the author may not have intended to support it.

Variables

connectedSignals
int[string] connectedSignals;
gtkSocket
GtkSocket* gtkSocket;

the main Gtk struct

onPlugAddedListeners
void delegate(Socket)[] onPlugAddedListeners;
Undocumented in source.
onPlugRemovedListeners
bool delegate(Socket)[] onPlugRemovedListeners;
Undocumented in source.

Inherited Members

From Container

gtkContainer
GtkContainer* gtkContainer;

the main Gtk struct

getContainerStruct
GtkContainer* getContainerStruct()

Get the main Gtk struct

getStruct
void* getStruct()

the main Gtk struct as a void*

setStruct
void setStruct(GObject* obj)
Undocumented in source. Be warned that the author may not have intended to support it.
removeAll
void removeAll()

Removes all widgets from the container

connectedSignals
int[string] connectedSignals;
onAddListeners
void delegate(Widget, Container)[] onAddListeners;
Undocumented in source.
addOnAdd
void addOnAdd(void delegate(Widget, Container) dlg, ConnectFlags connectFlags)
callBackAdd
void callBackAdd(GtkContainer* containerStruct, GtkWidget* widget, Container _container)
Undocumented in source. Be warned that the author may not have intended to support it.
onCheckResizeListeners
void delegate(Container)[] onCheckResizeListeners;
Undocumented in source.
addOnCheckResize
void addOnCheckResize(void delegate(Container) dlg, ConnectFlags connectFlags)
callBackCheckResize
void callBackCheckResize(GtkContainer* containerStruct, Container _container)
Undocumented in source. Be warned that the author may not have intended to support it.
onRemoveListeners
void delegate(Widget, Container)[] onRemoveListeners;
Undocumented in source.
addOnRemove
void addOnRemove(void delegate(Widget, Container) dlg, ConnectFlags connectFlags)
callBackRemove
void callBackRemove(GtkContainer* containerStruct, GtkWidget* widget, Container _container)
Undocumented in source. Be warned that the author may not have intended to support it.
onSetFocusChildListeners
void delegate(Widget, Container)[] onSetFocusChildListeners;
Undocumented in source.
addOnSetFocusChild
void addOnSetFocusChild(void delegate(Widget, Container) dlg, ConnectFlags connectFlags)
callBackSetFocusChild
void callBackSetFocusChild(GtkContainer* containerStruct, GtkWidget* widget, Container _container)
Undocumented in source. Be warned that the author may not have intended to support it.
add
void add(Widget widget)

Adds widget to container. Typically used for simple containers such as GtkWindow, GtkFrame, or GtkButton; for more complicated layout containers such as GtkBox or GtkGrid, this function will pick default packing parameters that may not be correct. So consider functions such as gtk_box_pack_start() and gtk_grid_attach() as an alternative to gtk_container_add() in those cases. A widget may be added to only one container at a time; you can't place the same widget inside two different containers.

remove
void remove(Widget widget)

Removes widget from container. widget must be inside container. Note that container will own a reference to widget, and that this may be the last reference held; so removing a widget from its container can destroy that widget. If you want to use widget again, you need to add a reference to it while it's not inside a container, using g_object_ref(). If you don't want to use widget again it's usually more efficient to simply destroy it directly using gtk_widget_destroy() since this will remove it from the container and help break any circular reference count cycles.

getResizeMode
GtkResizeMode getResizeMode()

Returns the resize mode for the container. See gtk_container_set_resize_mode().

setResizeMode
void setResizeMode(GtkResizeMode resizeMode)

Sets the resize mode for the container. The resize mode of a container determines whether a resize request will be passed to the container's parent, queued for later execution or executed immediately.

checkResize
void checkResize()
foreac
void foreac(GtkCallback callback, void* callbackData)

Invokes callback on each non-internal child of container. See gtk_container_forall() for details on what constitutes an "internal" child. Most applications should use gtk_container_foreach(), rather than gtk_container_forall().

getChildren
ListG getChildren()

Returns the container's non-internal children. See gtk_container_forall() for details on what constitutes an "internal" child.

getPathForChild
WidgetPath getPathForChild(Widget child)

Returns a newly created widget path representing all the widget hierarchy from the toplevel down to and including child.

setReallocateRedraws
void setReallocateRedraws(int needsRedraws)

Sets the reallocate_redraws flag of the container to the given value. Containers requesting reallocation redraws get automatically redrawn if any of their children changed allocation.

getFocusChild
Widget getFocusChild()

Returns the current focus child widget inside container. This is not the currently focused widget. That can be obtained by calling gtk_window_get_focus(). Since 2.14

setFocusChild
void setFocusChild(Widget child)

Sets, or unsets if child is NULL, the focused child of container. This function emits the GtkContainer::set_focus_child signal of container. Implementations of GtkContainer can override the default behaviour by overriding the class closure of this signal. This is function is mostly meant to be used by widgets. Applications can use gtk_widget_grab_focus() to manualy set the focus to a specific widget.

getFocusVadjustment
Adjustment getFocusVadjustment()

Retrieves the vertical focus adjustment for the container. See gtk_container_set_focus_vadjustment().

setFocusVadjustment
void setFocusVadjustment(Adjustment adjustment)

Hooks up an adjustment to focus handling in a container, so when a child of the container is focused, the adjustment is scrolled to show that widget. This function sets the vertical alignment. See gtk_scrolled_window_get_vadjustment() for a typical way of obtaining the adjustment and gtk_container_set_focus_hadjustment() for setting the horizontal adjustment. The adjustments have to be in pixel units and in the same coordinate system as the allocation for immediate children of the container.

getFocusHadjustment
Adjustment getFocusHadjustment()

Retrieves the horizontal focus adjustment for the container. See gtk_container_set_focus_hadjustment().

setFocusHadjustment
void setFocusHadjustment(Adjustment adjustment)

Hooks up an adjustment to focus handling in a container, so when a child of the container is focused, the adjustment is scrolled to show that widget. This function sets the horizontal alignment. See gtk_scrolled_window_get_hadjustment() for a typical way of obtaining the adjustment and gtk_container_set_focus_vadjustment() for setting the vertical adjustment. The adjustments have to be in pixel units and in the same coordinate system as the allocation for immediate children of the container.

resizeChildren
void resizeChildren()

Warning gtk_container_resize_children is deprecated and should not be used in newly-written code. 3.10

childType
GType childType()

Returns the type of the children supported by the container. Note that this may return G_TYPE_NONE to indicate that no more children can be added, e.g. for a GtkPaned which already has two children.

childGetProperty
void childGetProperty(Widget child, string propertyName, Value value)

Gets the value of a child property for child and container.

childSetProperty
void childSetProperty(Widget child, string propertyName, Value value)

Sets a child property for child and container.

childGetValist
void childGetValist(Widget child, string firstPropertyName, void* varArgs)

Gets the values of one or more child properties for child and container.

childSetValist
void childSetValist(Widget child, string firstPropertyName, void* varArgs)

Sets one or more child properties for child and container.

childNotify
void childNotify(Widget child, string childProperty)

Emits a "child-notify" signal for the child property child_property on widget. This is an analogue of g_object_notify() for child properties. Also see gtk_widget_child_notify().

forall
void forall(GtkCallback callback, void* callbackData)

Invokes callback on each child of container, including children that are considered "internal" (implementation details of the container). "Internal" children generally weren't added by the user of the container, but were added by the container implementation itself. Most applications should use gtk_container_foreach(), rather than gtk_container_forall(). Virtual: forall

getBorderWidth
uint getBorderWidth()

Retrieves the border width of the container. See gtk_container_set_border_width().

setBorderWidth
void setBorderWidth(uint borderWidth)

Sets the border width of the container. The border width of a container is the amount of space to leave around the outside of the container. The only exception to this is GtkWindow; because toplevel windows can't leave space outside, they leave the space inside. The border is added on all sides of the container. To add space to only one side, one approach is to create a GtkAlignment widget, call gtk_widget_set_size_request() to give it a size, and place it on the side of the container as a spacer.

propagateDraw
void propagateDraw(Widget child, Context cr)

When a container receives a call to the draw function, it must send synthetic "draw" calls to all children that don't have their own GdkWindows. This function provides a convenient way of doing this. A container, when it receives a call to its "draw" function, calls gtk_container_propagate_draw() once for each child, passing in the cr the container received. gtk_container_propagate_draw() takes care of translating the origin of cr, and deciding whether the draw needs to be sent to the child. It is a convenient and optimized way of getting the same effect as calling gtk_widget_draw() on the child directly. In most cases, a container can simply either inherit the "draw" implementation from GtkContainer, or do some drawing and then chain to the ::draw implementation from GtkContainer.

getFocusChain
int getFocusChain(ListG focusableWidgets)

Retrieves the focus chain of the container, if one has been set explicitly. If no focus chain has been explicitly set, GTK+ computes the focus chain based on the positions of the children. In that case, GTK+ stores NULL in focusable_widgets and returns FALSE.

setFocusChain
void setFocusChain(ListG focusableWidgets)

Sets a focus chain, overriding the one computed automatically by GTK+. In principle each widget in the chain should be a descendant of the container, but this is not enforced by this method, since it's allowed to set the focus chain before you pack the widgets, or have a widget in the chain that isn't always packed. The necessary checks are done when the focus chain is actually traversed.

unsetFocusChain
void unsetFocusChain()

Removes a focus chain explicitly set with gtk_container_set_focus_chain().

classFindChildProperty
ParamSpec classFindChildProperty(GObjectClass* cclass, string propertyName)

Finds a child property of a container class by name.

classInstallChildProperty
void classInstallChildProperty(GtkContainerClass* cclass, uint propertyId, ParamSpec pspec)

Installs a child property on a container class.

classListChildProperties
ParamSpec[] classListChildProperties(GObjectClass* cclass)

Returns all child properties of a container class.

classHandleBorderWidth
void classHandleBorderWidth(GtkContainerClass* klass)

Modifies a subclass of GtkContainerClass to automatically add and remove the border-width setting on GtkContainer. This allows the subclass to ignore the border width in its size request and allocate methods. The intent is for a subclass to invoke this in its class_init function. gtk_container_class_handle_border_width() is necessary because it would break API too badly to make this behavior the default. So subclasses must "opt in" to the parent class handling border_width for them.

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