Class
GtkVncDisplay
Constructors
vnc_display_new
Create a new widget capable of connecting to a VNC server and displaying its contents.
Functions
vnc_display_get_option_entries
Get the array of command line option entries containing VNC specific otions.
Instance methods
vnc_display_close
Request that the connection to the remote display is closed. The actual close will complete asynchronously and the “vnc-disconnected” signal will be emitted once complete.
vnc_display_force_grab
If enable
is TRUE, immediately grab the pointer.
If enable
is FALSE, immediately ungrab the pointer.
This overrides any automatic grabs that may have
been done.
vnc_display_get_allow_resize
Determine whether widget size is used to request rsize of the remote desktop.
vnc_display_get_force_size
Determine whether the widget size is being forced to match the desktop size.
vnc_display_get_height
Get the height of the remote desktop. This is only valid after the “vnc-initialized” signal has been emitted.
vnc_display_get_keep_aspect_ratio
Determine whether the framebuffer aspect ratio is preserved when scaling.
vnc_display_get_keyboard_grab
Determine if the keyboard will be grabbed when the widget has input focus.
vnc_display_get_name
Get the name of the remote desktop. This is only valid after the “vnc-initialized” signal has been emitted.
vnc_display_get_read_only
Determine if the widget will operate in read-only mode, denying keyboard/mouse inputs.
vnc_display_get_scaling
Determine whether the widget is permitted to scale the remote desktop to fit the current widget size.
vnc_display_get_width
Get the width of the remote desktop. This is only valid after the “vnc-initialized” signal has been emitted.
vnc_display_is_pointer_absolute
Determine if the pointer is operating in absolute mode. This is only valid after the “vnc-initialized” signal has been emitted.
vnc_display_open_addr
Open a socket connection to server identified by addr
.
addr
may refer to either a TCP address (IPv4/6) or
a UNIX socket address. The hostname
provided should
reflect the name of the host that the addr
provides a
connection to, if it is not already available in addr
.
For example, if addr
points to a proxy server, then
hostname
can be used to provide the name of the final
endpoint. This will be used by some authentication
schemes, for example x509 certificate validation
against hostname
.
vnc_display_open_fd
Open a connection using fd
as the transport. If fd
refers to a TCP connection, it is recommended to use
vnc_display_open_fd_with_hostname instead, to
provide the remote hostname. This allows use of
x509 based authentication which requires a hostname
to be available.
vnc_display_open_fd_with_hostname
Open a connection using fd
as the transport. The
hostname
provided should reflect the name of the
host that the fd
provides a connection to. This
will be used by some authentication schemes, for
example x509 certificate validation against hostname
.
vnc_display_send_keys
Send keyval click events to the display. Al the key press events will be sent first and then all the key release events.
vnc_display_send_keys_ex
Sends key events to the remote server. keyvals
should contain X11 key code values. These will
be automatically converted to XT scancodes if needed.
vnc_display_send_pointer
Move the remote pointer to position (x
, y
) and set the
button state to button_mask
. This method will only
work if the desktop is using absolute pointer mode. It
will be a no-op if in relative pointer mode.
vnc_display_set_allow_resize
Set whether changes in the widget size will be translated into requests to resize the remote desktop. Resizing of the remote desktop is not guaranteed to be honoured by servers, but when it is, it will avoid the need to do scaling.
vnc_display_set_depth
Set the desired colour depth. Higher quality colour depths will require greater network bandwidth. The colour depth must be set prior to connecting to the remote server.
vnc_display_set_force_size
Set whether the widget size will be forced to match the remote desktop size. If the widget size does not match the remote desktop size, and scaling is disabled, some of the remote desktop may be hidden, or black borders may be drawn.
vnc_display_set_grab_keys
Set the sequence of keys that must be pressed to activate keyborad and pointer grab.
vnc_display_set_keep_aspect_ratio
Set whether the aspect ratio of the framebuffer is preserved when scaling.
vnc_display_set_keyboard_grab
Set whether the widget will grab the keyboard when it has focus. Grabbing the keyboard allows it to intercept special key sequences, ensuring they get sent to the remote desktop, rather than intepreted locally.
vnc_display_set_lossy_encoding
Set whether the client is willing to accept lossy framebuffer update encodings. Lossy encodings can improve performance by lowering network bandwidth requirements, with a cost that the display received by the client will not be pixel perfect.
vnc_display_set_pointer_force_visible
If enable
is TRUE, then when the remote cursor has
no visible pixels, it will be replaced with a visible
cursor. If enable
is FALSE, the empty remote cursor
will be honoured.
vnc_display_set_pointer_grab
Set whether the widget will automatically grab the mouse pointer upon a button click.
vnc_display_set_pointer_local
If enable
is TRUE, then a local mouse cursor will be
made visible. If enable
is FALSE, the local mouse
cursor will be hidden.
vnc_display_set_read_only
Set whether the widget is running in read-only mode. In read-only mode, keyboard and mouse events will not be sent to the remote desktop server. The widget will merely display activity from the server.
vnc_display_set_rotation
Set the rotation angle to view the display of the remote desktop, in clockwise direction.
vnc_display_set_scaling
Set whether the remote desktop contents is automatically scaled to fit the available widget size, or whether it will be rendered at 1:1 size.
vnc_display_set_shared_flag
Set the shared state for the connection. A TRUE value allow allow this client to co-exist with other existing clients. A FALSE value will cause other clients to be dropped.
vnc_display_set_smoothing
Set whether pixels are smoothly interpolated when scaling, to avoid aliasing.
vnc_display_set_zoom_level
Requests a constant scaling factor to be applied to the remote
desktop. The zoom
value is a percentage in the range 10-400.
Methods inherited from GtkBuildable (10)
gtk_buildable_add_child
Adds a child to buildable
. type
is an optional string
describing how the child should be added.
gtk_buildable_construct_child
Constructs a child of buildable
with the name name
.
gtk_buildable_custom_finished
This is similar to gtk_buildable_parser_finished()
but is
called once for each custom tag handled by the buildable
.
gtk_buildable_custom_tag_end
This is called at the end of each custom element handled by the buildable.
gtk_buildable_custom_tag_start
This is called for each unknown element under <child>
.
gtk_buildable_get_internal_child
Get the internal child called childname
of the buildable
object.
gtk_buildable_get_name
Gets the name of the buildable
object.
gtk_buildable_parser_finished
Called when the builder finishes the parsing of a
[GtkBuilder UI definition][BUILDER-UI].
Note that this will be called once for each time
gtk_builder_add_from_file()
or gtk_builder_add_from_string()
is called on a builder.
gtk_buildable_set_buildable_property
Sets the property name name
to value
on the buildable
object.
gtk_buildable_set_name
Sets the name of the buildable
object.
Properties
Properties inherited from GtkWidget (39)
Gtk.Widget:app-paintable
Gtk.Widget:can-default
Gtk.Widget:can-focus
Gtk.Widget:composite-child
Gtk.Widget:double-buffered
Whether the widget is double buffered.
Gtk.Widget:events
Gtk.Widget:expand
Whether to expand in both directions. Setting this sets both GtkWidget:hexpand
and GtkWidget:vexpand
.
Gtk.Widget:focus-on-click
Whether the widget should grab focus when it is clicked with the mouse.
Gtk.Widget:halign
How to distribute horizontal space if widget gets extra space, see GtkAlign
.
Gtk.Widget:has-default
Gtk.Widget:has-focus
Gtk.Widget:has-tooltip
Enables or disables the emission of GtkWidget::query-tooltip
on widget
.
A value of TRUE
indicates that widget
can have a tooltip, in this case
the widget will be queried using GtkWidget::query-tooltip
to determine
whether it will provide a tooltip or not.
Gtk.Widget:height-request
Gtk.Widget:hexpand
Whether to expand horizontally. See gtk_widget_set_hexpand().
Gtk.Widget:hexpand-set
Whether to use the GtkWidget:hexpand
property. See gtk_widget_get_hexpand_set().
Gtk.Widget:is-focus
Gtk.Widget:margin
Sets all four sides’ margin at once. If read, returns max margin on any side.
Gtk.Widget:margin-bottom
Margin on bottom side of widget.
Gtk.Widget:margin-end
Margin on end of widget, horizontally. This property supports left-to-right and right-to-left text directions.
Gtk.Widget:margin-left
Margin on left side of widget.
Gtk.Widget:margin-right
Margin on right side of widget.
Gtk.Widget:margin-start
Margin on start of widget, horizontally. This property supports left-to-right and right-to-left text directions.
Gtk.Widget:margin-top
Margin on top side of widget.
Gtk.Widget:name
Gtk.Widget:no-show-all
Gtk.Widget:opacity
The requested opacity of the widget. See gtk_widget_set_opacity()
for
more details about window opacity.
Gtk.Widget:parent
Gtk.Widget:receives-default
Gtk.Widget:scale-factor
The scale factor of the widget. See gtk_widget_get_scale_factor()
for
more details about widget scaling.
Gtk.Widget:sensitive
Gtk.Widget:style
The style of the widget, which contains information about how it will look (colors, etc).
Gtk.Widget:tooltip-markup
Sets the text of tooltip to be the given string, which is marked up with the [Pango text markup language][PangoMarkupFormat]. Also see gtk_tooltip_set_markup().
Gtk.Widget:tooltip-text
Sets the text of tooltip to be the given string.
Gtk.Widget:valign
How to distribute vertical space if widget gets extra space, see GtkAlign
.
Gtk.Widget:vexpand
Whether to expand vertically. See gtk_widget_set_vexpand().
Gtk.Widget:vexpand-set
Whether to use the GtkWidget:vexpand
property. See gtk_widget_get_vexpand_set().
Gtk.Widget:visible
Gtk.Widget:width-request
Gtk.Widget:window
The widget’s window if it is realized, NULL
otherwise.
Signals
Signals inherited from GtkWidget (69)
GtkWidget::accel-closures-changed
GtkWidget::button-press-event
The ::button-press-event signal will be emitted when a button (typically from a mouse) is pressed.
GtkWidget::button-release-event
The ::button-release-event signal will be emitted when a button (typically from a mouse) is released.
GtkWidget::can-activate-accel
Determines whether an accelerator that activates the signal
identified by signal_id
can currently be activated.
This signal is present to allow applications and derived
widgets to override the default GtkWidget
handling
for determining whether an accelerator can be activated.
GtkWidget::child-notify
The ::child-notify signal is emitted for each [child property][child-properties] that has changed on an object. The signal’s detail holds the property name.
GtkWidget::composited-changed
The ::composited-changed signal is emitted when the composited
status of widgets
screen changes.
See gdk_screen_is_composited().
GtkWidget::configure-event
The ::configure-event signal will be emitted when the size, position or
stacking of the widget
‘s window has changed.
GtkWidget::damage-event
Emitted when a redirected window belonging to widget
gets drawn into.
The region/area members of the event shows what area of the redirected
drawable was drawn into.
GtkWidget::delete-event
The ::delete-event signal is emitted if a user requests that
a toplevel window is closed. The default handler for this signal
destroys the window. Connecting gtk_widget_hide_on_delete()
to
this signal will cause the window to be hidden instead, so that
it can later be shown again without reconstructing it.
GtkWidget::destroy
Signals that all holders of a reference to the widget should release the reference that they hold. May result in finalization of the widget if all references are released.
GtkWidget::destroy-event
The ::destroy-event signal is emitted when a GdkWindow
is destroyed.
You rarely get this signal, because most widgets disconnect themselves
from their window before they destroy it, so no widget owns the
window at destroy time.
GtkWidget::direction-changed
The ::direction-changed signal is emitted when the text direction of a widget changes.
GtkWidget::drag-begin
The ::drag-begin signal is emitted on the drag source when a drag is started. A typical reason to connect to this signal is to set up a custom drag icon with e.g. gtk_drag_source_set_icon_pixbuf().
GtkWidget::drag-data-delete
The ::drag-data-delete signal is emitted on the drag source when a drag
with the action GDK_ACTION_MOVE
is successfully completed. The signal
handler is responsible for deleting the data that has been dropped. What
“delete” means depends on the context of the drag operation.
GtkWidget::drag-data-get
The ::drag-data-get signal is emitted on the drag source when the drop
site requests the data which is dragged. It is the responsibility of
the signal handler to fill data
with the data in the format which
is indicated by info
. See gtk_selection_data_set()
and gtk_selection_data_set_text().
GtkWidget::drag-data-received
The ::drag-data-received signal is emitted on the drop site when the
dragged data has been received. If the data was received in order to
determine whether the drop will be accepted, the handler is expected
to call gdk_drag_status()
and not finish the drag.
If the data was received in response to a GtkWidget::drag-drop
signal
(and this is the last target to be received), the handler for this
signal is expected to process the received data and then call
gtk_drag_finish(), setting the success
parameter depending on
whether the data was processed successfully.
GtkWidget::drag-drop
The ::drag-drop signal is emitted on the drop site when the user drops
the data onto the widget. The signal handler must determine whether
the cursor position is in a drop zone or not. If it is not in a drop
zone, it returns FALSE
and no further processing is necessary.
Otherwise, the handler returns TRUE
. In this case, the handler must
ensure that gtk_drag_finish()
is called to let the source know that
the drop is done. The call to gtk_drag_finish()
can be done either
directly or in a GtkWidget::drag-data-received
handler which gets
triggered by calling gtk_drag_get_data()
to receive the data for one
or more of the supported targets.
GtkWidget::drag-end
The ::drag-end signal is emitted on the drag source when a drag is
finished. A typical reason to connect to this signal is to undo
things done in GtkWidget::drag-begin
.
GtkWidget::drag-failed
The ::drag-failed signal is emitted on the drag source when a drag has
failed. The signal handler may hook custom code to handle a failed DnD
operation based on the type of error, it returns TRUE
is the failure has
been already handled (not showing the default “drag operation failed”
animation), otherwise it returns FALSE
.
GtkWidget::drag-leave
The ::drag-leave signal is emitted on the drop site when the cursor
leaves the widget. A typical reason to connect to this signal is to
undo things done in GtkWidget::drag-motion
, e.g. undo highlighting
with gtk_drag_unhighlight().
GtkWidget::drag-motion
The ::drag-motion signal is emitted on the drop site when the user
moves the cursor over the widget during a drag. The signal handler
must determine whether the cursor position is in a drop zone or not.
If it is not in a drop zone, it returns FALSE
and no further processing
is necessary. Otherwise, the handler returns TRUE
. In this case, the
handler is responsible for providing the necessary information for
displaying feedback to the user, by calling gdk_drag_status().
GtkWidget::draw
This signal is emitted when a widget is supposed to render itself.
The widget
‘s top left corner must be painted at the origin of
the passed in context and be sized to the values returned by
gtk_widget_get_allocated_width()
and gtk_widget_get_allocated_height().
GtkWidget::enter-notify-event
The ::enter-notify-event will be emitted when the pointer enters
the widget
‘s window.
GtkWidget::event
The GTK+ main loop will emit three signals for each GDK event delivered
to a widget: one generic ::event signal, another, more specific,
signal that matches the type of event delivered (e.g.
GtkWidget::key-press-event
) and finally a generic
GtkWidget::event-after
signal.
GtkWidget::event-after
After the emission of the GtkWidget::event
signal and (optionally)
the second more specific signal, ::event-after will be emitted
regardless of the previous two signals handlers return values.
GtkWidget::focus
GtkWidget::focus-in-event
The ::focus-in-event signal will be emitted when the keyboard focus
enters the widget
‘s window.
GtkWidget::focus-out-event
The ::focus-out-event signal will be emitted when the keyboard focus
leaves the widget
‘s window.
GtkWidget::grab-broken-event
Emitted when a pointer or keyboard grab on a window belonging
to widget
gets broken.
GtkWidget::grab-focus
GtkWidget::grab-notify
The ::grab-notify signal is emitted when a widget becomes shadowed by a GTK+ grab (not a pointer or keyboard grab) on another widget, or when it becomes unshadowed due to a grab being removed.
GtkWidget::hide
The ::hide signal is emitted when widget
is hidden, for example with gtk_widget_hide().
GtkWidget::hierarchy-changed
The ::hierarchy-changed signal is emitted when the
anchored state of a widget changes. A widget is
“anchored” when its toplevel
ancestor is a GtkWindow
. This signal is emitted when
a widget changes from un-anchored to anchored or vice-versa.
GtkWidget::key-press-event
The ::key-press-event signal is emitted when a key is pressed. The signal emission will reoccur at the key-repeat rate when the key is kept pressed.
GtkWidget::key-release-event
The ::key-release-event signal is emitted when a key is released.
GtkWidget::keynav-failed
Gets emitted if keyboard navigation fails.
See gtk_widget_keynav_failed()
for details.
GtkWidget::leave-notify-event
The ::leave-notify-event will be emitted when the pointer leaves
the widget
‘s window.
GtkWidget::map
The ::map signal is emitted when widget
is going to be mapped, that is
when the widget is visible (which is controlled with
gtk_widget_set_visible()) and all its parents up to the toplevel widget
are also visible. Once the map has occurred, GtkWidget::map-event
will
be emitted.
GtkWidget::map-event
The ::map-event signal will be emitted when the widget
‘s window is
mapped. A window is mapped when it becomes visible on the screen.
GtkWidget::mnemonic-activate
The default handler for this signal activates widget
if group_cycling
is FALSE
, or just makes widget
grab focus if group_cycling
is TRUE
.
GtkWidget::motion-notify-event
The ::motion-notify-event signal is emitted when the pointer moves
over the widget’s GdkWindow
.
GtkWidget::move-focus
GtkWidget::parent-set
The ::parent-set signal is emitted when a new parent has been set on a widget.
GtkWidget::popup-menu
This signal gets emitted whenever a widget should pop up a context
menu. This usually happens through the standard key binding mechanism;
by pressing a certain key while a widget is focused, the user can cause
the widget to pop up a menu. For example, the GtkEntry
widget creates
a menu with clipboard commands. See the
[Popup Menu Migration Checklist][checklist-popup-menu]
for an example of how to use this signal.
GtkWidget::property-notify-event
The ::property-notify-event signal will be emitted when a property on
the widget
‘s window has been changed or deleted.
GtkWidget::proximity-in-event
To receive this signal the GdkWindow
associated to the widget needs
to enable the #GDK_PROXIMITY_IN_MASK mask.
GtkWidget::proximity-out-event
To receive this signal the GdkWindow
associated to the widget needs
to enable the #GDK_PROXIMITY_OUT_MASK mask.
GtkWidget::query-tooltip
Emitted when GtkWidget:has-tooltip
is TRUE
and the hover timeout
has expired with the cursor hovering “above” widget
; or emitted when widget
got
focus in keyboard mode.
GtkWidget::realize
The ::realize signal is emitted when widget
is associated with a
GdkWindow
, which means that gtk_widget_realize()
has been called or the
widget has been mapped (that is, it is going to be drawn).
GtkWidget::screen-changed
The ::screen-changed signal gets emitted when the screen of a widget has changed.
GtkWidget::scroll-event
The ::scroll-event signal is emitted when a button in the 4 to 7 range is pressed. Wheel mice are usually configured to generate button press events for buttons 4 and 5 when the wheel is turned.
GtkWidget::selection-clear-event
The ::selection-clear-event signal will be emitted when the
the widget
‘s window has lost ownership of a selection.
GtkWidget::selection-get
GtkWidget::selection-notify-event
GtkWidget::selection-received
GtkWidget::selection-request-event
The ::selection-request-event signal will be emitted when
another client requests ownership of the selection owned by
the widget
‘s window.
GtkWidget::show
The ::show signal is emitted when widget
is shown, for example with gtk_widget_show().
GtkWidget::show-help
GtkWidget::size-allocate
GtkWidget::state-changed
The ::state-changed signal is emitted when the widget state changes. See gtk_widget_get_state().
GtkWidget::state-flags-changed
The ::state-flags-changed signal is emitted when the widget state changes, see gtk_widget_get_state_flags().
GtkWidget::style-set
The ::style-set signal is emitted when a new style has been set
on a widget. Note that style-modifying functions like
gtk_widget_modify_base()
also cause this signal to be emitted.
GtkWidget::style-updated
The ::style-updated signal is a convenience signal that is emitted when the
GtkStyleContext::changed
signal is emitted on the widget
‘s associated
GtkStyleContext
as returned by gtk_widget_get_style_context().
GtkWidget::touch-event
GtkWidget::unmap
The ::unmap signal is emitted when widget
is going to be unmapped, which
means that either it or any of its parents up to the toplevel widget have
been set as hidden.
GtkWidget::unmap-event
The ::unmap-event signal will be emitted when the widget
‘s window is
unmapped. A window is unmapped when it becomes invisible on the screen.
GtkWidget::unrealize
The ::unrealize signal is emitted when the GdkWindow
associated with
widget
is destroyed, which means that gtk_widget_unrealize()
has been
called or the widget has been unmapped (that is, it is going to be hidden).
GtkWidget::visibility-notify-event
The ::visibility-notify-event will be emitted when the widget
‘s
window is obscured or unobscured.
GtkWidget::window-state-event
The ::window-state-event will be emitted when the state of the
toplevel window associated to the widget
changes.
Signals inherited from GObject (1)
GObject::notify
The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.
Class structure
struct GtkVncDisplayClass {
GtkDrawingAreaClass parent_class;
void (* vnc_connected) (
VncDisplay* display
);
void (* vnc_initialized) (
VncDisplay* display
);
void (* vnc_disconnected) (
VncDisplay* display
);
void (* vnc_auth_credential) (
VncDisplay* display,
GValueArray* credList
);
}
No description available.
Class members
parent_class: GtkDrawingAreaClass
No description available.
vnc_connected: void (* vnc_connected) ( VncDisplay* display )
No description available.
vnc_initialized: void (* vnc_initialized) ( VncDisplay* display )
No description available.
vnc_disconnected: void (* vnc_disconnected) ( VncDisplay* display )
No description available.
vnc_auth_credential: void (* vnc_auth_credential) ( VncDisplay* display, GValueArray* credList )
No description available.