goocanvasmm: Goocanvas::Canvas Class Reference

The main canvas widget, containing a number of canvas items. More...

Inheritance diagram for Goocanvas::Canvas:

Public Member Functions
	Canvas (Canvas&& src) noexcept

Canvas&	operator= (Canvas&& src) noexcept

	Canvas (const Canvas&)=delete

Canvas&	operator= (const Canvas&)=delete

virtual	~Canvas () noexcept

GooCanvas*	gobj ()
	Provides access to the underlying C GtkObject. More...

const GooCanvas*	gobj () const
	Provides access to the underlying C GtkObject. More...

	Canvas ()

Glib::RefPtr< Item >	get_root_item ()
	Gets the root item of the canvas, usually a Goo::CanvasGroup. More...

Glib::RefPtr< const Item >	get_root_item () const
	Gets the root item of the canvas, usually a Goo::CanvasGroup. More...

void	set_root_item (const Glib::RefPtr< Item >& item)
	Sets the root item of the canvas. More...

Glib::RefPtr< ItemModel >	get_root_item_model ()
	Gets the root item model of the canvas. More...

Glib::RefPtr< const ItemModel >	get_root_item_model () const
	Gets the root item model of the canvas. More...

void	set_root_item_model (const Glib::RefPtr< ItemModel >& model)
	Sets the root item model of the canvas. More...

Glib::RefPtr< Item >	get_static_root_item ()

Glib::RefPtr< const Item >	get_static_root_item () const

void	set_static_root_item (const Glib::RefPtr< Item >& item)

Glib::RefPtr< ItemModel >	get_static_root_item_model ()

Glib::RefPtr< const ItemModel >	get_static_root_item_model () const

void	set_static_root_item_model (const Glib::RefPtr< ItemModel >& model)

Glib::RefPtr< Item >	get_item (const Glib::RefPtr< ItemModel >& model)
	Gets the canvas item associated with the given Goo::CanvasItemModel. More...

Glib::RefPtr< const Item >	get_item (const Glib::RefPtr< ItemModel >& model) const
	Gets the canvas item associated with the given Goo::CanvasItemModel. More...

Glib::RefPtr< Item >	get_item_at (double x, double y, bool is_pointer_event)
	Gets the item at the given point. More...

Glib::RefPtr< const Item >	get_item_at (double x, double y, bool is_pointer_event) const
	Gets the item at the given point. More...

std::vector< Glib::RefPtr< Item > >	get_items_at (double x, double y, bool is_pointer_event)
	Gets all items at the given point. More...

std::vector< Glib::RefPtr< const Item > >	get_items_at (double x, double y, bool is_pointer_event) const
	Gets all items at the given point. More...

std::vector< Glib::RefPtr< Item > >	get_items_in_area (const Bounds& area, bool inside_area, bool allow_overlaps, bool include_containers)
	Gets a list of items inside or outside a given area. More...

std::vector< Glib::RefPtr< const Item > >	get_items_in_area (const Bounds& area, bool inside_area, bool allow_overlaps, bool include_containers) const
	Gets a list of items inside or outside a given area. More...

double	get_scale () const
	Gets the current scale of the canvas. More...

void	set_scale (double scale)
	Sets the scale of the canvas. More...

void	get_bounds (double&left, double& top, double&right, double& bottom) const
	Gets the bounds of the canvas, in canvas units. More...

void	get_bounds (Bounds& bounds) const

void	set_bounds (double left, double top, double right, double bottom)
	Sets the bounds of the Goo::Canvas, in canvas units. More...

void	set_bounds (const Bounds& bounds)

void	scroll_to (double left, double top)
	Scrolls the canvas, placing the given point as close to the top-left of the view as possible. More...

void	grab_focus (const Glib::RefPtr< Item >& item)
	Grabs the keyboard focus for the given item. More...

void	render (const Cairo::RefPtr< Cairo::Context >& context, const Bounds& bounds, double scale=0.0)
	Renders all or part of a canvas to the given cairo context. More...

void	render (const Cairo::RefPtr< Cairo::Context >& context, double scale=0.0)

void	convert_to_pixels (double& x, double& y) const
	Converts a coordinate from the canvas coordinate space to pixels. More...

void	convert_from_pixels (double& x, double& y) const
	Converts a coordinate from pixels to the canvas coordinate space. More...

void	convert_to_item_space (const Glib::RefPtr< Item >& item, double& x, double& y) const
	Converts a coordinate from the canvas coordinate space to the given item's coordinate space, applying all transformation matrices including the item's own transformation matrix, if it has one. More...

void	convert_from_item_space (const Glib::RefPtr< Item >& item, double& x, double& y) const
	Converts a coordinate from the given item's coordinate space to the canvas coordinate space, applying all transformation matrices including the item's own transformation matrix, if it has one. More...

void	convert_bounds_to_item_space (const Glib::RefPtr< Item >& item, Bounds& bounds) const

Gdk::GrabStatus	pointer_grab (const Glib::RefPtr< Item >& item, Gdk::EventMask mask, const Glib::RefPtr< Gdk::Cursor >& cursor, guint32 time)
	Attempts to grab the pointer for the given item. More...

Gdk::GrabStatus	pointer_grab (const Glib::RefPtr< Item >& item, Gdk::EventMask mask, guint32 time)

void	pointer_ungrab (const Glib::RefPtr< Item >& item, guint32 time)
	Ungrabs the pointer, if the given item has the pointer grab. More...

GdkGrabStatus	keyboard_grab (const Glib::RefPtr< Item >& item, bool owner_events, guint32 time)
	Attempts to grab the keyboard for the given item. More...

void	keyboard_ungrab (const Glib::RefPtr< Item >& item, guint32 time)
	Ungrabs the keyboard, if the given item has the keyboard grab. More...

Cairo::RefPtr< Cairo::Context >	create_cairo_context ()
	Creates a cairo context, initialized with the default canvas settings. More...

Glib::RefPtr< Item >	create_item (const Glib::RefPtr< ItemModel >& model)
	This function is only intended to be used when implementing new canvas items, typically container items such as Goo::CanvasGroup. More...

void	unregister_item (const Glib::RefPtr< ItemModel >& model)
	This function is only intended to be used when implementing new canvas items. More...

void	update ()
	This function is only intended to be used by subclasses of Goo::Canvas or Goo::CanvasItem implementations. More...

void	request_update ()
	This function is only intended to be used by subclasses of Goo::Canvas or Goo::CanvasItem implementations. More...

void	request_redraw (const Bounds& bounds)
	This function is only intended to be used by subclasses of Goo::Canvas or Goo::CanvasItem implementations. More...

void	request_item_redraw (const Bounds& bounds, bool is_static=false)

double	get_default_line_width () const
	Gets the default line width, which depends on the current units setting. More...

void	register_widget_item (const Glib::RefPtr< Goocanvas::Widget >& widget)
	This function should only be used by Goo::CanvasWidget and subclass implementations. More...

void	unregister_widget_item (const Glib::RefPtr< Goocanvas::Widget >& widget)
	This function should only be used by Goo::CanvasWidget and subclass implementations. More...

Glib::SignalProxy2< void, const Glib::RefPtr< Item >&, const Glib::RefPtr< ItemModel >& >	signal_item_created ()

Glib::PropertyProxy< double >	property_scale ()
	The magnification factor of the canvas. More...

Glib::PropertyProxy_ReadOnly< double >	property_scale () const
	The magnification factor of the canvas. More...

Glib::PropertyProxy< double >	property_scale_x ()
	The horizontal magnification factor of the canvas. More...

Glib::PropertyProxy_ReadOnly< double >	property_scale_x () const
	The horizontal magnification factor of the canvas. More...

Glib::PropertyProxy< double >	property_scale_y ()
	The vertical magnification factor of the canvas. More...

Glib::PropertyProxy_ReadOnly< double >	property_scale_y () const
	The vertical magnification factor of the canvas. More...

Glib::PropertyProxy< AnchorType >	property_anchor ()
	Where to place the canvas when it is smaller than the widget's allocated area. More...

Glib::PropertyProxy_ReadOnly< AnchorType >	property_anchor () const
	Where to place the canvas when it is smaller than the widget's allocated area. More...

Glib::PropertyProxy< double >	property_x1 ()
	The x coordinate of the left edge of the canvas bounds, in canvas units. More...

Glib::PropertyProxy_ReadOnly< double >	property_x1 () const
	The x coordinate of the left edge of the canvas bounds, in canvas units. More...

Glib::PropertyProxy< double >	property_y1 ()
	The y coordinate of the top edge of the canvas bounds, in canvas units. More...

Glib::PropertyProxy_ReadOnly< double >	property_y1 () const
	The y coordinate of the top edge of the canvas bounds, in canvas units. More...

Glib::PropertyProxy< double >	property_x2 ()
	The x coordinate of the right edge of the canvas bounds, in canvas units. More...

Glib::PropertyProxy_ReadOnly< double >	property_x2 () const
	The x coordinate of the right edge of the canvas bounds, in canvas units. More...

Glib::PropertyProxy< double >	property_y2 ()
	The y coordinate of the bottom edge of the canvas bounds, in canvas units. More...

Glib::PropertyProxy_ReadOnly< double >	property_y2 () const
	The y coordinate of the bottom edge of the canvas bounds, in canvas units. More...

Glib::PropertyProxy< bool >	property_automatic_bounds ()
	If the bounds are automatically calculated based on the bounds of all the items in the canvas. More...

Glib::PropertyProxy_ReadOnly< bool >	property_automatic_bounds () const
	If the bounds are automatically calculated based on the bounds of all the items in the canvas. More...

Glib::PropertyProxy< bool >	property_bounds_from_origin ()
	If the automatic bounds are calculated from the origin. More...

Glib::PropertyProxy_ReadOnly< bool >	property_bounds_from_origin () const
	If the automatic bounds are calculated from the origin. More...

Glib::PropertyProxy< double >	property_bounds_padding ()
	The padding added to the automatic bounds. More...

Glib::PropertyProxy_ReadOnly< double >	property_bounds_padding () const
	The padding added to the automatic bounds. More...

Glib::PropertyProxy< Gtk::Unit >	property_units ()
	The units to use for the canvas. More...

Glib::PropertyProxy_ReadOnly< Gtk::Unit >	property_units () const
	The units to use for the canvas. More...

Glib::PropertyProxy< double >	property_resolution_x ()
	The horizontal resolution of the display, in dots per inch. More...

Glib::PropertyProxy_ReadOnly< double >	property_resolution_x () const
	The horizontal resolution of the display, in dots per inch. More...

Glib::PropertyProxy< double >	property_resolution_y ()
	The vertical resolution of the display, in dots per inch. More...

Glib::PropertyProxy_ReadOnly< double >	property_resolution_y () const
	The vertical resolution of the display, in dots per inch. More...

Glib::PropertyProxy_WriteOnly< Glib::ustring >	property_background_color ()
	The color to use for the canvas background. More...

Glib::PropertyProxy_WriteOnly< guint >	property_background_color_rgb ()
	The color to use for the canvas background, specified as a 24-bit integer value, 0xRRGGBB. More...

Glib::PropertyProxy_WriteOnly< Gdk::RGBA >	property_background_color_gdk_rgba ()
	The color to use for the canvas background, specified as a GdkRGBA. More...

Glib::PropertyProxy< bool >	property_integer_layout ()
	If all item layout is done to the nearest integer. More...

Glib::PropertyProxy_ReadOnly< bool >	property_integer_layout () const
	If all item layout is done to the nearest integer. More...

Glib::PropertyProxy< bool >	property_clear_background ()
	If the background is cleared before the canvas is painted. More...

Glib::PropertyProxy_ReadOnly< bool >	property_clear_background () const
	If the background is cleared before the canvas is painted. More...

Public Member Functions inherited from Gtk::Container
	Container (Container &&src) noexcept

Container &	operator= (Container &&src) noexcept

	Container (const Container &)=delete

Container &	operator= (const Container &)=delete

virtual	~Container () noexcept

GtkContainer *	gobj ()

const GtkContainer *	gobj () const

void	set_border_width (guint border_width)

guint	get_border_width () const

virtual void	add (Widget &widget)

void	remove (Widget &widget)

void	set_resize_mode (ResizeMode resize_mode)

ResizeMode	get_resize_mode () const

void	check_resize ()

void	foreach (const ForeachSlot &slot)

void	forall (const ForeachSlot &slot)

std::vector< Widget * >	get_children ()

std::vector< const Widget * >	get_children () const

void	propagate_draw (Widget &child, const ::Cairo::RefPtr< ::Cairo::Context > &cr)

void	set_focus_chain (const std::vector< Widget * > &focusable_widgets)

bool	has_focus_chain () const

std::vector< Widget * >	get_focus_chain ()

std::vector< const Widget * >	get_focus_chain () const

void	unset_focus_chain ()

void	set_reallocate_redraws (bool needs_redraws=true)

void	set_focus_child (Widget &widget)

Widget *	get_focus_child ()

const Widget *	get_focus_child () const

void	set_focus_vadjustment (const Glib::RefPtr< Adjustment > &adjustment)

Glib::RefPtr< Adjustment >	get_focus_vadjustment ()

Glib::RefPtr< const Adjustment >	get_focus_vadjustment () const

void	set_focus_hadjustment (const Glib::RefPtr< Adjustment > &adjustment)

Glib::RefPtr< Adjustment >	get_focus_hadjustment ()

Glib::RefPtr< const Adjustment >	get_focus_hadjustment () const

void	resize_children ()

GType	child_type () const

WidgetPath	get_path_for_child (const Widget &child) const

Glib::SignalProxy1< void, Widget * >	signal_add ()

Glib::SignalProxy1< void, Widget * >	signal_remove ()

Glib::SignalProxy0< void >	signal_check_resize ()

Glib::SignalProxy1< void, Widget * >	signal_set_focus_child ()

void	show_all_children (bool recursive=true)

Gtk::Container *	wrap (GtkContainer *object, bool take_copy=false)

Public Member Functions inherited from Gtk::Widget
	Widget (Widget &&src) noexcept

Widget &	operator= (Widget &&src) noexcept

	Widget (const Widget &)=delete

Widget &	operator= (const Widget &)=delete

virtual	~Widget () noexcept

GtkWidget *	gobj ()

const GtkWidget *	gobj () const

void	show ()

void	show_now ()

void	hide ()

void	show_all ()

void	queue_draw ()

void	queue_draw_area (int x, int y, int width, int height)

void	queue_draw_region (const ::Cairo::RefPtr< const ::Cairo::Region > &region)

void	queue_resize ()

void	size_allocate (const Allocation &allocation)

void	size_allocate (const Allocation &allocation, int baseline)

SizeRequestMode	get_request_mode () const

void	get_preferred_width (int &minimum_width, int &natural_width) const

void	get_preferred_height_for_width (int width, int &minimum_height, int &natural_height) const

void	get_preferred_height_for_width (int width, int &minimum_height, int &natural_height, int &minimum_baseline, int &natural_baseline) const

void	get_preferred_height (int &minimum_height, int &natural_height) const

void	get_preferred_width_for_height (int height, int &minimum_width, int &natural_width) const

void	get_preferred_size (Requisition &minimum_size, Requisition &natural_size) const

void	add_accelerator (const Glib::ustring &accel_signal, const Glib::RefPtr< AccelGroup > &accel_group, guint accel_key, Gdk::ModifierType accel_mods, AccelFlags accel_flags)

bool	remove_accelerator (const Glib::RefPtr< AccelGroup > &accel_group, guint accel_key, Gdk::ModifierType accel_mods)

void	set_accel_path (const Glib::ustring &accel_path, const Glib::RefPtr< AccelGroup > &accel_group)

bool	mnemonic_activate (bool group_cycling)

bool	event (GdkEvent *gdk_event)

int	send_expose (GdkEvent *gdk_event)

bool	send_focus_change (GdkEvent *gdk_event)

bool	activate ()

void	reparent (Widget &new_parent)

bool	intersect (const Gdk::Rectangle &area) const

bool	intersect (const Gdk::Rectangle &area, Gdk::Rectangle &intersection) const

::Cairo::RefPtr< ::Cairo::Region >	region_intersect (const ::Cairo::RefPtr< ::Cairo::Region > &region) const

void	freeze_child_notify ()

void	child_notify (const Glib::ustring &child_property)

void	thaw_child_notify ()

void	set_can_focus (bool can_focus=true)

bool	get_can_focus () const

bool	has_focus () const

bool	is_focus () const

bool	has_visible_focus () const

void	grab_focus ()

void	set_can_default (bool can_default=true)

bool	get_can_default () const

bool	has_default () const

void	grab_default ()

void	set_receives_default (bool receives_default=true)

bool	get_receives_default () const

bool	has_grab () const

bool	device_is_shadowed (const Glib::RefPtr< const Gdk::Device > &device)

void	add_modal_grab ()

void	remove_modal_grab ()

void	set_name (const Glib::ustring &name)

void	unset_name ()

Glib::ustring	get_name () const

void	set_state (StateType state)

StateType	get_state () const

void	set_state_flags (StateFlags flags, bool clear=true)

void	unset_state_flags (StateFlags flags)

StateFlags	get_state_flags () const

void	set_sensitive (bool sensitive=true)

bool	get_sensitive () const

bool	is_sensitive () const

void	set_visible (bool visible=true)

bool	get_visible () const

bool	is_visible () const

bool	get_has_window () const

bool	get_is_toplevel () const

bool	get_is_drawable () const

bool	get_realized () const

bool	get_mapped () const

void	set_app_paintable (bool app_paintable=true)

bool	get_app_paintable () const

void	set_double_buffered (bool double_buffered=true)

bool	get_double_buffered () const

void	set_redraw_on_allocate (bool redraw_on_allocate=true)

void	set_child_visible (bool visible=true)

bool	get_child_visible () const

Glib::RefPtr< Gdk::Window >	get_window ()

Glib::RefPtr< const Gdk::Window >	get_window () const

void	register_window (const Glib::RefPtr< Gdk::Window > &window)

void	unregister_window (const Glib::RefPtr< Gdk::Window > &window)

int	get_allocated_width () const

int	get_allocated_height () const

int	get_allocated_baseline () const

Allocation	get_allocation () const

void	set_allocation (const Allocation &allocation)

void	set_clip (const Allocation &clip)

Allocation	get_clip () const

Container *	get_parent ()

const Container *	get_parent () const

Glib::RefPtr< Gdk::Window >	get_parent_window ()

Glib::RefPtr< const Gdk::Window >	get_parent_window () const

void	set_parent_window (const Glib::RefPtr< const Gdk::Window > &parent_window)

bool	child_focus (DirectionType direction)

bool	keynav_failed (DirectionType direction)

void	error_bell ()

void	set_size_request (int width=-1, int height=-1)

void	get_size_request (int &width, int &height) const

void	set_events (Gdk::EventMask events)

void	add_events (Gdk::EventMask events)

void	set_device_events (const Glib::RefPtr< const Gdk::Device > &device, Gdk::EventMask events)

void	add_device_events (const Glib::RefPtr< const Gdk::Device > &device, Gdk::EventMask events)

void	set_opacity (double opacity)

double	get_opacity () const

void	set_device_enabled (const Glib::RefPtr< Gdk::Device > &device, bool enabled=true)

bool	get_device_enabled (const Glib::RefPtr< const Gdk::Device > &device) const

Container *	get_toplevel ()

const Container *	get_toplevel () const

Widget *	get_ancestor (GType widget_type)

const Widget *	get_ancestor (GType widget_type) const

Glib::RefPtr< Gdk::Visual >	get_visual ()

Glib::RefPtr< Gdk::Screen >	get_screen ()

Glib::RefPtr< const Gdk::Screen >	get_screen () const

bool	has_screen () const

int	get_scale_factor () const

Glib::RefPtr< Gdk::Display >	get_display ()

Glib::RefPtr< const Gdk::Display >	get_display () const

Glib::RefPtr< Gdk::Window >	get_root_window ()

Glib::RefPtr< const Gdk::Window >	get_root_window () const

Glib::RefPtr< Settings >	get_settings ()

Glib::RefPtr< Clipboard >	get_clipboard (const Glib::ustring &selection)

Glib::RefPtr< const Clipboard >	get_clipboard (const Glib::ustring &selection) const

bool	get_hexpand () const

void	set_hexpand (bool expand=true)

bool	get_hexpand_set () const

void	set_hexpand_set (bool set=true)

bool	get_vexpand () const

void	set_vexpand (bool expand=true)

bool	get_vexpand_set () const

void	set_vexpand_set (bool set=true)

void	queue_compute_expand ()

bool	compute_expand (Orientation orientation)

bool	get_support_multidevice () const

void	set_support_multidevice (bool support_multidevice=true)

Glib::RefPtr< Atk::Object >	get_accessible ()

Glib::RefPtr< const Atk::Object >	get_accessible () const

Align	get_halign () const

void	set_halign (Align align)

Align	get_valign () const

Align	get_valign_with_baseline () const

void	set_valign (Align align)

int	get_margin_left () const

void	set_margin_left (int margin)

int	get_margin_right () const

void	set_margin_right (int margin)

int	get_margin_start () const

void	set_margin_start (int margin)

int	get_margin_end () const

void	set_margin_end (int margin)

int	get_margin_top () const

void	set_margin_top (int margin)

int	get_margin_bottom () const

void	set_margin_bottom (int margin)

Gdk::EventMask	get_events () const

Gdk::EventMask	get_device_events (const Glib::RefPtr< const Gdk::Device > &device) const

void	get_pointer (int &x, int &y) const

bool	is_ancestor (Widget &ancestor) const

bool	translate_coordinates (Widget &dest_widget, int src_x, int src_y, int &dest_x, int &dest_y)

void	override_color (const Gdk::RGBA &color, StateFlags state=STATE_FLAG_NORMAL)

void	unset_color (StateFlags state=STATE_FLAG_NORMAL)

void	override_background_color (const Gdk::RGBA &color, StateFlags state=STATE_FLAG_NORMAL)

void	unset_background_color (StateFlags state=STATE_FLAG_NORMAL)

void	override_font (const Pango::FontDescription &font_desc)

void	unset_font ()

void	override_symbolic_color (const Glib::ustring &name, const Gdk::RGBA &color)

void	unset_symbolic_color (const Glib::ustring &name)

void	override_cursor (const Gdk::RGBA &cursor, const Gdk::RGBA &secondary_cursor)

void	unset_cursor ()

void	reset_style ()

void	get_style_property (const Glib::ustring &the_property_name, PropertyType &value) const

Glib::RefPtr< Pango::Context >	create_pango_context ()

Glib::RefPtr< Pango::Context >	get_pango_context ()

Glib::RefPtr< Pango::Layout >	create_pango_layout (const Glib::ustring &text)

Glib::RefPtr< Gdk::Pixbuf >	render_icon_pixbuf (const StockID &stock_id, IconSize size)

void	set_composite_name (const Glib::ustring &name)

void	unset_composite_name ()

Glib::ustring	get_composite_name () const

void	set_direction (TextDirection dir)

TextDirection	get_direction () const

void	shape_combine_region (const ::Cairo::RefPtr< const ::Cairo::Region > &region)

void	input_shape_combine_region (const ::Cairo::RefPtr< const ::Cairo::Region > &region)

WidgetPath	get_path () const

std::vector< Widget * >	list_mnemonic_labels ()

std::vector< const Widget * >	list_mnemonic_labels () const

void	add_mnemonic_label (Widget &label)

void	remove_mnemonic_label (Widget &label)

void	drag_get_data (const Glib::RefPtr< Gdk::DragContext > &context, const Glib::ustring &target, guint32 time)

void	drag_highlight ()

void	drag_unhighlight ()

void	drag_dest_set (DestDefaults flags=DestDefaults(0), Gdk::DragAction actions=Gdk::DragAction(0))

void	drag_dest_set (const std::vector< TargetEntry > &targets, DestDefaults flags=DEST_DEFAULT_ALL, Gdk::DragAction actions=Gdk::ACTION_COPY)

void	drag_dest_set_proxy (const Glib::RefPtr< Gdk::Window > &proxy_window, Gdk::DragProtocol protocol, bool use_coordinates)

void	drag_dest_unset ()

Glib::ustring	drag_dest_find_target (const Glib::RefPtr< Gdk::DragContext > &context, const Glib::RefPtr< TargetList > &target_list) const

Glib::ustring	drag_dest_find_target (const Glib::RefPtr< Gdk::DragContext > &context) const

Glib::RefPtr< TargetList >	drag_dest_get_target_list ()

Glib::RefPtr< const TargetList >	drag_dest_get_target_list () const

void	drag_dest_set_target_list (const Glib::RefPtr< TargetList > &target_list)

void	drag_dest_add_text_targets ()

void	drag_dest_add_image_targets ()

void	drag_dest_add_uri_targets ()

void	drag_source_set (const std::vector< TargetEntry > &targets, Gdk::ModifierType start_button_mask=Gdk::MODIFIER_MASK, Gdk::DragAction actions=Gdk::ACTION_COPY)

void	drag_source_unset ()

void	drag_source_set_icon (const Glib::RefPtr< Gdk::Pixbuf > &pixbuf)

void	drag_source_set_icon (const StockID &stock_id)

void	drag_source_set_icon (const Glib::ustring &icon_name)

void	drag_source_add_text_targets ()

void	drag_source_add_uri_targets ()

void	drag_source_add_image_targets ()

Glib::RefPtr< Gdk::DragContext >	drag_begin (const Glib::RefPtr< TargetList > &targets, Gdk::DragAction actions, int button, GdkEvent *gdk_event)

Glib::RefPtr< Gdk::DragContext >	drag_begin (const Glib::RefPtr< TargetList > &targets, Gdk::DragAction actions, int button, GdkEvent *gdk_event, int x, int y)

bool	drag_check_threshold (int start_x, int start_y, int current_x, int current_y)

void	drag_set_as_icon (const Glib::RefPtr< Gdk::DragContext > &context, int hot_x, int hot_y)

void	queue_resize_no_redraw ()

bool	get_no_show_all () const

void	set_no_show_all (bool no_show_all=true)

void	set_parent (Widget &parent)

void	unparent ()

void	map ()

void	unmap ()

void	draw_insertion_cursor (const ::Cairo::RefPtr< ::Cairo::Context > &cr, const Gdk::Rectangle &location, bool is_primary, TextDirection direction, bool draw_arrow=true)

void	set_tooltip_window (Window &custom_window)

Window *	get_tooltip_window ()

void	trigger_tooltip_query ()

void	set_tooltip_text (const Glib::ustring &text)

Glib::ustring	get_tooltip_text () const

void	set_tooltip_markup (const Glib::ustring &markup)

Glib::ustring	get_tooltip_markup () const

void	set_has_tooltip (bool has_tooltip=TRUE)

bool	get_has_tooltip () const

int	get_width () const

int	get_height () const

bool	is_composited () const

bool	in_destruction () const

Glib::RefPtr< StyleContext >	get_style_context ()

Glib::RefPtr< Gtk::StyleContext >	get_style_context () const

Gdk::ModifierType	get_modifier_mask (Gdk::ModifierIntent intent)

void	insert_action_group (const Glib::ustring &name, const Glib::RefPtr< Gio::ActionGroup > &group)

void	remove_action_group (const Glib::ustring &name)

Glib::RefPtr< Gio::ActionGroup >	get_action_group (const Glib::ustring &prefix)

Glib::RefPtr< const Gio::ActionGroup >	get_action_group (const Glib::ustring &prefix) const

std::vector< Glib::ustring >	list_action_prefixes () const

Glib::SignalProxy0< void >	signal_show ()

Glib::SignalProxy0< void >	signal_hide ()

Glib::SignalProxy0< void >	signal_map ()

Glib::SignalProxy0< void >	signal_unmap ()

Glib::SignalProxy0< void >	signal_realize ()

Glib::SignalProxy0< void >	signal_unrealize ()

Glib::SignalProxy1< void, Allocation & >	signal_size_allocate ()

Glib::SignalProxy1< void, Gtk::StateType >	signal_state_changed ()

Glib::SignalProxy1< void, Gtk::StateFlags >	signal_state_flags_changed ()

Glib::SignalProxy1< void, Widget * >	signal_parent_changed ()

Glib::SignalProxy1< void, Widget * >	signal_hierarchy_changed ()

Glib::SignalProxy0< void >	signal_style_updated ()

Glib::SignalProxy1< void, TextDirection >	signal_direction_changed ()

Glib::SignalProxy1< void, bool >	signal_grab_notify ()

Glib::SignalProxy1< void, GParamSpec * >	signal_child_notify ()

Glib::SignalProxy1< bool, bool >	signal_mnemonic_activate ()

Glib::SignalProxy0< void >	signal_grab_focus ()

Glib::SignalProxy1< bool, DirectionType >	signal_focus ()

Glib::SignalProxy1< bool, GdkEvent * >	signal_event ()

Glib::SignalProxy1< void, GdkEvent * >	signal_event_after ()

Glib::SignalProxy1< bool, GdkEventButton * >	signal_button_press_event ()

Glib::SignalProxy1< bool, GdkEventButton * >	signal_button_release_event ()

Glib::SignalProxy1< bool, GdkEventScroll * >	signal_scroll_event ()

Glib::SignalProxy1< bool, GdkEventMotion * >	signal_motion_notify_event ()

Glib::SignalProxy1< bool, GdkEventAny * >	signal_delete_event ()

Glib::SignalProxy1< bool, const ::Cairo::RefPtr< ::Cairo::Context > & >	signal_draw ()

Glib::SignalProxy1< bool, GdkEventKey * >	signal_key_press_event ()

Glib::SignalProxy1< bool, GdkEventKey * >	signal_key_release_event ()

Glib::SignalProxy1< bool, GdkEventCrossing * >	signal_enter_notify_event ()

Glib::SignalProxy1< bool, GdkEventCrossing * >	signal_leave_notify_event ()

Glib::SignalProxy1< bool, GdkEventConfigure * >	signal_configure_event ()

Glib::SignalProxy1< bool, GdkEventFocus * >	signal_focus_in_event ()

Glib::SignalProxy1< bool, GdkEventFocus * >	signal_focus_out_event ()

Glib::SignalProxy1< bool, GdkEventAny * >	signal_map_event ()

Glib::SignalProxy1< bool, GdkEventAny * >	signal_unmap_event ()

Glib::SignalProxy1< bool, GdkEventProperty * >	signal_property_notify_event ()

Glib::SignalProxy1< bool, GdkEventSelection * >	signal_selection_clear_event ()

Glib::SignalProxy1< bool, GdkEventSelection * >	signal_selection_request_event ()

Glib::SignalProxy1< bool, GdkEventSelection * >	signal_selection_notify_event ()

Glib::SignalProxy1< bool, GdkEventProximity * >	signal_proximity_in_event ()

Glib::SignalProxy1< bool, GdkEventProximity * >	signal_proximity_out_event ()

Glib::SignalProxy1< bool, GdkEventVisibility * >	signal_visibility_notify_event ()

Glib::SignalProxy1< bool, GdkEventWindowState * >	signal_window_state_event ()

Glib::SignalProxy3< void, SelectionData &, guint, guint >	signal_selection_get ()

Glib::SignalProxy2< void, const SelectionData &, guint >	signal_selection_received ()

Glib::SignalProxy1< void, const Glib::RefPtr< Gdk::DragContext > & >	signal_drag_begin ()

Glib::SignalProxy1< void, const Glib::RefPtr< Gdk::DragContext > & >	signal_drag_end ()

Glib::SignalProxy4< void, const Glib::RefPtr< Gdk::DragContext > &, SelectionData &, guint, guint >	signal_drag_data_get ()

Glib::SignalProxy1< void, const Glib::RefPtr< Gdk::DragContext > & >	signal_drag_data_delete ()

Glib::SignalProxy2< bool, const Glib::RefPtr< Gdk::DragContext > &, DragResult >	signal_drag_failed ()

Glib::SignalProxy2< void, const Glib::RefPtr< Gdk::DragContext > &, guint >	signal_drag_leave ()

Glib::SignalProxy4< bool, const Glib::RefPtr< Gdk::DragContext > &, int, int, guint >	signal_drag_motion ()

Glib::SignalProxy4< bool, const Glib::RefPtr< Gdk::DragContext > &, int, int, guint >	signal_drag_drop ()

Glib::SignalProxy6< void, const Glib::RefPtr< Gdk::DragContext > &, int, int, const SelectionData &, guint, guint >	signal_drag_data_received ()

Glib::SignalProxy1< void, const Glib::RefPtr< Gdk::Screen > & >	signal_screen_changed ()

Glib::SignalProxy0< void >	signal_composited_changed ()

Glib::SignalProxy0< bool >	signal_popup_menu ()

Glib::SignalProxy4< bool, int, int, bool, const Glib::RefPtr< Tooltip > & >	signal_query_tooltip ()

Glib::SignalProxy1< bool, GdkEventGrabBroken * >	signal_grab_broken_event ()

Glib::SignalProxy1< bool, GdkEventExpose * >	signal_damage_event ()

Glib::SignalProxy1< bool, GdkEventTouch * >	signal_touch_event ()

Glib::PropertyProxy< Glib::ustring >	property_name ()

Glib::PropertyProxy_ReadOnly< Glib::ustring >	property_name () const

Glib::PropertyProxy< Container * >	property_parent ()

Glib::PropertyProxy_ReadOnly< Container * >	property_parent () const

Glib::PropertyProxy< int >	property_width_request ()

Glib::PropertyProxy_ReadOnly< int >	property_width_request () const

Glib::PropertyProxy< int >	property_height_request ()

Glib::PropertyProxy_ReadOnly< int >	property_height_request () const

Glib::PropertyProxy< bool >	property_visible ()

Glib::PropertyProxy_ReadOnly< bool >	property_visible () const

Glib::PropertyProxy< bool >	property_sensitive ()

Glib::PropertyProxy_ReadOnly< bool >	property_sensitive () const

Glib::PropertyProxy< bool >	property_app_paintable ()

Glib::PropertyProxy_ReadOnly< bool >	property_app_paintable () const

Glib::PropertyProxy< bool >	property_can_focus ()

Glib::PropertyProxy_ReadOnly< bool >	property_can_focus () const

Glib::PropertyProxy< bool >	property_has_focus ()

Glib::PropertyProxy_ReadOnly< bool >	property_has_focus () const

Glib::PropertyProxy< bool >	property_is_focus ()

Glib::PropertyProxy_ReadOnly< bool >	property_is_focus () const

Glib::PropertyProxy< bool >	property_can_default ()

Glib::PropertyProxy_ReadOnly< bool >	property_can_default () const

Glib::PropertyProxy< bool >	property_has_default ()

Glib::PropertyProxy_ReadOnly< bool >	property_has_default () const

Glib::PropertyProxy< bool >	property_receives_default ()

Glib::PropertyProxy_ReadOnly< bool >	property_receives_default () const

Glib::PropertyProxy_ReadOnly< bool >	property_composite_child () const

Glib::PropertyProxy< Glib::RefPtr< Style > >	property_style ()

Glib::PropertyProxy_ReadOnly< Glib::RefPtr< Style > >	property_style () const

Glib::PropertyProxy< Gdk::EventMask >	property_events ()

Glib::PropertyProxy_ReadOnly< Gdk::EventMask >	property_events () const

Glib::PropertyProxy< bool >	property_has_tooltip ()

Glib::PropertyProxy_ReadOnly< bool >	property_has_tooltip () const

Glib::PropertyProxy< Glib::ustring >	property_tooltip_markup ()

Glib::PropertyProxy_ReadOnly< Glib::ustring >	property_tooltip_markup () const

Glib::PropertyProxy< Glib::ustring >	property_tooltip_text ()

Glib::PropertyProxy_ReadOnly< Glib::ustring >	property_tooltip_text () const

Glib::PropertyProxy_ReadOnly< Glib::RefPtr< Gdk::Window > >	property_window () const

Glib::PropertyProxy< bool >	property_no_show_all ()

Glib::PropertyProxy_ReadOnly< bool >	property_no_show_all () const

Glib::PropertyProxy< bool >	property_double_buffered ()

Glib::PropertyProxy_ReadOnly< bool >	property_double_buffered () const

Glib::PropertyProxy< Align >	property_halign ()

Glib::PropertyProxy_ReadOnly< Align >	property_halign () const

Glib::PropertyProxy< Align >	property_valign ()

Glib::PropertyProxy_ReadOnly< Align >	property_valign () const

Glib::PropertyProxy< int >	property_margin_left ()

Glib::PropertyProxy_ReadOnly< int >	property_margin_left () const

Glib::PropertyProxy< int >	property_margin_right ()

Glib::PropertyProxy_ReadOnly< int >	property_margin_right () const

Glib::PropertyProxy< int >	property_margin_start ()

Glib::PropertyProxy_ReadOnly< int >	property_margin_start () const

Glib::PropertyProxy< int >	property_margin_end ()

Glib::PropertyProxy_ReadOnly< int >	property_margin_end () const

Glib::PropertyProxy< int >	property_margin_top ()

Glib::PropertyProxy_ReadOnly< int >	property_margin_top () const

Glib::PropertyProxy< int >	property_margin_bottom ()

Glib::PropertyProxy_ReadOnly< int >	property_margin_bottom () const

Glib::PropertyProxy< int >	property_margin ()

Glib::PropertyProxy_ReadOnly< int >	property_margin () const

Glib::PropertyProxy< bool >	property_hexpand ()

Glib::PropertyProxy_ReadOnly< bool >	property_hexpand () const

Glib::PropertyProxy< bool >	property_hexpand_set ()

Glib::PropertyProxy_ReadOnly< bool >	property_hexpand_set () const

Glib::PropertyProxy< bool >	property_vexpand ()

Glib::PropertyProxy_ReadOnly< bool >	property_vexpand () const

Glib::PropertyProxy< bool >	property_vexpand_set ()

Glib::PropertyProxy_ReadOnly< bool >	property_vexpand_set () const

Glib::PropertyProxy< bool >	property_expand ()

Glib::PropertyProxy_ReadOnly< bool >	property_expand () const

Glib::PropertyProxy< double >	property_opacity ()

Glib::PropertyProxy_ReadOnly< double >	property_opacity () const

Glib::PropertyProxy_ReadOnly< int >	property_scale_factor () const

Gtk::Widget *	wrap (GtkWidget *object, bool take_copy=false)

Public Member Functions inherited from Gtk::Object
	Object (Object &&src) noexcept

Object &	operator= (Object &&src) noexcept

virtual	~Object () noexcept

GObject *	gobj ()

const GObject *	gobj () const

Public Member Functions inherited from Glib::Object
	Object (const Object &)=delete

Object &	operator= (const Object &)=delete

	Object (Object &&src) noexcept

Object &	operator= (Object &&src) noexcept

void *	get_data (const QueryQuark &key)

void	set_data (const Quark &key, void *data)

void	set_data (const Quark &key, void *data, DestroyNotify notify)

void	remove_data (const QueryQuark &quark)

void *	steal_data (const QueryQuark &quark)

Glib::RefPtr< Glib::Object >	wrap (GObject *object, bool take_copy=false)

Public Member Functions inherited from Glib::ObjectBase
	ObjectBase (const ObjectBase &)=delete

ObjectBase &	operator= (const ObjectBase &)=delete

void	set_property_value (const Glib::ustring &property_name, const Glib::ValueBase &value)

void	get_property_value (const Glib::ustring &property_name, Glib::ValueBase &value) const

void	set_property (const Glib::ustring &property_name, const PropertyType &value)

void	get_property (const Glib::ustring &property_name, PropertyType &value) const

void	connect_property_changed (const Glib::ustring &property_name, const sigc::slot< void > &slot)

sigc::connection	connect_property_changed_with_return (const Glib::ustring &property_name, const sigc::slot< void > &slot)

void	freeze_notify ()

void	thaw_notify ()

virtual void	reference () const

virtual void	unreference () const

GObject *	gobj ()

const GObject *	gobj () const

GObject *	gobj_copy () const

Public Member Functions inherited from sigc::trackable
	trackable ()

	trackable (const trackable &src)

	trackable (trackable &&src) noexcept

	~trackable ()

void	add_destroy_notify_callback (void *data, func_destroy_notify func) const

void	notify_callbacks ()

trackable &	operator= (const trackable &src)

trackable &	operator= (trackable &&src) noexcept

void	remove_destroy_notify_callback (void *data) const

Public Member Functions inherited from Gtk::Buildable
	Buildable (Buildable &&src) noexcept

Buildable &	operator= (Buildable &&src) noexcept

virtual	~Buildable () noexcept

GtkBuildable *	gobj ()

const GtkBuildable *	gobj () const

void	set_name (const Glib::ustring &name)

Glib::ustring	get_name () const

Glib::RefPtr< Gtk::Buildable >	wrap (GtkBuildable *object, bool take_copy=false)

Public Member Functions inherited from Glib::Interface
	Interface ()

	Interface (Interface &&src) noexcept

Interface &	operator= (Interface &&src) noexcept

	Interface (const Glib::Interface_Class &interface_class)

	Interface (GObject *castitem)

virtual	~Interface () noexcept

	Interface (const Interface &)=delete

Interface &	operator= (const Interface &)=delete

GObject *	gobj ()

const GObject *	gobj () const

Static Public Member Functions
static GType	get_type ()
	Get the GType for this class, for use with the underlying GObject type system. More...

Static Public Member Functions inherited from Gtk::Container
static GType	get_type ()

Static Public Member Functions inherited from Gtk::Widget
static GType	get_type ()

static Widget *	get_current_modal_grab ()

static void	push_composite_child ()

static void	pop_composite_child ()

static void	set_default_direction (TextDirection dir)

static TextDirection	get_default_direction ()

static Widget *	drag_get_source_widget (const Glib::RefPtr< Gdk::DragContext > &context)

Static Public Member Functions inherited from Gtk::Buildable
static void	add_interface (GType gtype_implementer)

static GType	get_type ()

Protected Member Functions
virtual void	on_item_created (const Glib::RefPtr< Item >& item, const Glib::RefPtr< ItemModel >& model)
	This is a default handler for the signal signal_item_created(). More...

virtual Glib::RefPtr< Item >	create_item_vfunc (const Glib::RefPtr< ItemModel >& model)

Protected Member Functions inherited from Gtk::Container
virtual void	on_add (Widget *widget)

virtual void	on_remove (Widget *widget)

virtual void	on_check_resize ()

virtual void	on_set_focus_child (Widget *widget)

	Container ()

virtual GType	child_type_vfunc () const

virtual void	forall_vfunc (gboolean include_internals, GtkCallback callback, gpointer callback_data)

virtual char *	composite_name_vfunc (GtkWidget *child)

virtual void	set_child_property_vfunc (GtkWidget child, guint property_id, const GValue value, GParamSpec *pspec)

virtual void	get_child_property_vfunc (GtkWidget child, guint property_id, GValue value, GParamSpec *pspec) const

Glib::PropertyProxy< guint >	property_border_width ()

Glib::PropertyProxy_ReadOnly< guint >	property_border_width () const

Glib::PropertyProxy< ResizeMode >	property_resize_mode ()

Glib::PropertyProxy_ReadOnly< ResizeMode >	property_resize_mode () const

Glib::PropertyProxy_WriteOnly< Widget * >	property_child ()

Protected Member Functions inherited from Gtk::Widget
virtual void	on_show ()

virtual void	on_hide ()

virtual void	on_map ()

virtual void	on_unmap ()

virtual void	on_realize ()

virtual void	on_unrealize ()

virtual void	on_size_allocate (Allocation &allocation)

virtual void	on_state_changed (Gtk::StateType previous_state)

virtual void	on_parent_changed (Widget *previous_parent)

virtual void	on_hierarchy_changed (Widget *previous_toplevel)

virtual void	on_style_updated ()

virtual void	on_direction_changed (TextDirection direction)

virtual void	on_grab_notify (bool was_grabbed)

virtual void	on_child_notify (GParamSpec *pspec)

virtual bool	on_mnemonic_activate (bool group_cycling)

virtual void	on_grab_focus ()

virtual bool	on_focus (DirectionType direction)

virtual bool	on_event (GdkEvent *gdk_event)

virtual bool	on_button_press_event (GdkEventButton *button_event)

virtual bool	on_button_release_event (GdkEventButton *release_event)

virtual bool	on_scroll_event (GdkEventScroll *scroll_event)

virtual bool	on_motion_notify_event (GdkEventMotion *motion_event)

virtual bool	on_delete_event (GdkEventAny *any_event)

virtual bool	on_draw (const ::Cairo::RefPtr< ::Cairo::Context > &cr)

virtual bool	on_key_press_event (GdkEventKey *key_event)

virtual bool	on_key_release_event (GdkEventKey *key_event)

virtual bool	on_enter_notify_event (GdkEventCrossing *crossing_event)

virtual bool	on_leave_notify_event (GdkEventCrossing *crossing_event)

virtual bool	on_configure_event (GdkEventConfigure *configure_event)

virtual bool	on_focus_in_event (GdkEventFocus *focus_event)

virtual bool	on_focus_out_event (GdkEventFocus *gdk_event)

virtual bool	on_map_event (GdkEventAny *any_event)

virtual bool	on_unmap_event (GdkEventAny *any_event)

virtual bool	on_property_notify_event (GdkEventProperty *property_event)

virtual bool	on_selection_clear_event (GdkEventSelection *selection_event)

virtual bool	on_selection_request_event (GdkEventSelection *selection_event)

virtual bool	on_selection_notify_event (GdkEventSelection *selection_event)

virtual bool	on_proximity_in_event (GdkEventProximity *proximity_event)

virtual bool	on_proximity_out_event (GdkEventProximity *proximity_event)

virtual bool	on_visibility_notify_event (GdkEventVisibility *visibility_event)

virtual bool	on_window_state_event (GdkEventWindowState *window_state_event)

virtual void	on_selection_get (SelectionData &selection_data, guint info, guint time)

virtual void	on_selection_received (const SelectionData &selection_data, guint time)

virtual void	on_drag_begin (const Glib::RefPtr< Gdk::DragContext > &context)

virtual void	on_drag_end (const Glib::RefPtr< Gdk::DragContext > &context)

virtual void	on_drag_data_get (const Glib::RefPtr< Gdk::DragContext > &context, SelectionData &selection_data, guint info, guint time)

virtual void	on_drag_data_delete (const Glib::RefPtr< Gdk::DragContext > &context)

virtual void	on_drag_leave (const Glib::RefPtr< Gdk::DragContext > &context, guint time)

virtual bool	on_drag_motion (const Glib::RefPtr< Gdk::DragContext > &context, int x, int y, guint time)

virtual bool	on_drag_drop (const Glib::RefPtr< Gdk::DragContext > &context, int x, int y, guint time)

virtual void	on_drag_data_received (const Glib::RefPtr< Gdk::DragContext > &context, int x, int y, const SelectionData &selection_data, guint info, guint time)

virtual void	on_screen_changed (const Glib::RefPtr< Gdk::Screen > &previous_screen)

virtual void	dispatch_child_properties_changed_vfunc (guint p1, GParamSpec **p2)

virtual void	show_all_vfunc ()

virtual Glib::RefPtr< Atk::Object >	get_accessible_vfunc ()

virtual SizeRequestMode	get_request_mode_vfunc () const

virtual void	get_preferred_width_vfunc (int &minimum_width, int &natural_width) const

virtual void	get_preferred_height_for_width_vfunc (int width, int &minimum_height, int &natural_height) const

virtual void	get_preferred_height_vfunc (int &minimum_height, int &natural_height) const

virtual void	get_preferred_width_for_height_vfunc (int height, int &minimum_width, int &natural_width) const

	Widget ()

void	realize ()

void	unrealize ()

void	draw (const ::Cairo::RefPtr< ::Cairo::Context > &cr)

void	set_mapped (bool mapped=true)

void	set_realized (bool realized=true)

void	set_has_window (bool has_window=true)

void	set_window (const Glib::RefPtr< Gdk::Window > &window)

void	transform_cairo_context_to_window (const ::Cairo::RefPtr< ::Cairo::Context > &cr, const Glib::RefPtr< const Gdk::Window > &window)

Requisition	get_requisition () const

void	get_style_property_value (const Glib::ustring &the_property_name, Glib::ValueBase &value) const

void	realize_if_needed ()

Protected Member Functions inherited from Glib::Object
	Object ()

	Object (const Glib::ConstructParams &construct_params)

	Object (GObject *castitem)

Protected Member Functions inherited from Glib::ObjectBase
	ObjectBase ()

	ObjectBase (const char *custom_type_name)

	ObjectBase (const std::type_info &custom_type_info)

	ObjectBase (ObjectBase &&src) noexcept

ObjectBase &	operator= (ObjectBase &&src) noexcept

virtual	~ObjectBase () noexcept=0

void	initialize (GObject *castitem)

void	initialize_move (GObject castitem, Glib::ObjectBase previous_wrapper)

Protected Member Functions inherited from Gtk::Buildable
	Buildable ()

Related Functions
(Note that these are not member functions.)
Goocanvas::Canvas*	wrap (GooCanvas* object, bool take_copy=false)
	A Glib::wrap() method for this object. More...

Additional Inherited Members
Public Types inherited from Gtk::Container
typedef sigc::slot< void, Widget & >	ForeachSlot

Public Types inherited from Glib::Object
typedef void(*	DestroyNotify) (gpointer data)

Public Types inherited from sigc::trackable
typedef internal::func_destroy_notify	func_destroy_notify

Static Protected Member Functions inherited from Gtk::Widget
static bool	should_draw_window (const ::Cairo::RefPtr< const ::Cairo::Context > &cr, const Glib::RefPtr< const Gdk::Window > &window)

Detailed Description

The main canvas widget, containing a number of canvas items.

Add child items (see Item) to the root item (see get_root_item()), for instance with Item::add_child().

Constructor & Destructor Documentation

Goocanvas::Canvas::Canvas ( Canvas&& src )

noexcept

Goocanvas::Canvas::Canvas ( const Canvas& )

delete

virtual Goocanvas::Canvas::~Canvas ( )

virtualnoexcept

Goocanvas::Canvas::Canvas ( )

Member Function Documentation

void Goocanvas::Canvas::convert_bounds_to_item_space	(	const Glib::RefPtr< Item >&	item,
		Bounds&	bounds
	)		const

void Goocanvas::Canvas::convert_from_item_space	(	const Glib::RefPtr< Item >&	item,
		double &	x,
		double &	y
	)		const

Converts a coordinate from the given item's coordinate space to the canvas coordinate space, applying all transformation matrices including the item's own transformation matrix, if it has one.

Parameters

item	A Goo::CanvasItem.
x	A pointer to the x coordinate to convert.
y	A pointer to the y coordinate to convert.

void Goocanvas::Canvas::convert_from_pixels	(	double &	x,
		double &	y
	)		const

Converts a coordinate from pixels to the canvas coordinate space.

The pixel coordinate space specifies pixels from the top-left of the entire canvas window, according to the current scale setting. See set_scale().

The canvas coordinate space is specified in the call to set_bounds().

Parameters

x	A pointer to the x coordinate to convert.
y	A pointer to the y coordinate to convert.

void Goocanvas::Canvas::convert_to_item_space	(	const Glib::RefPtr< Item >&	item,
		double &	x,
		double &	y
	)		const

Converts a coordinate from the canvas coordinate space to the given item's coordinate space, applying all transformation matrices including the item's own transformation matrix, if it has one.

Parameters

item	A Goo::CanvasItem.
x	A pointer to the x coordinate to convert.
y	A pointer to the y coordinate to convert.

void Goocanvas::Canvas::convert_to_pixels	(	double &	x,
		double &	y
	)		const

Converts a coordinate from the canvas coordinate space to pixels.

The canvas coordinate space is specified in the call to set_bounds().

The pixel coordinate space specifies pixels from the top-left of the entire canvas window, according to the current scale setting. See set_scale().

Parameters

x	A pointer to the x coordinate to convert.
y	A pointer to the y coordinate to convert.

Cairo::RefPtr<Cairo::Context> Goocanvas::Canvas::create_cairo_context ( )

Creates a cairo context, initialized with the default canvas settings.

Returns: A new cairo context. It should be freed with cairo_destroy().

Glib::RefPtr<Item> Goocanvas::Canvas::create_item ( const Glib::RefPtr< ItemModel >& model )

This function is only intended to be used when implementing new canvas items, typically container items such as Goo::CanvasGroup.

It creates a new canvas item for the given item model, and recursively creates items for any children.

It uses the create_item() virtual method if it has been set. Subclasses of Goo::Canvas can define this method if they want to use custom views for items.

It emits the Goo::Canvas::signal_item_created() signal after creating the view, so application code can connect signal handlers to the new view if desired.

Parameters

model The item model to create a canvas item for.

Returns: A new canvas item.

virtual Glib::RefPtr<Item> Goocanvas::Canvas::create_item_vfunc ( const Glib::RefPtr< ItemModel >& model )

protectedvirtual

void Goocanvas::Canvas::get_bounds	(	double &	left,
		double &	top,
		double &	right,
		double &	bottom
	)		const

Gets the bounds of the canvas, in canvas units.

By default, canvas units are pixels, though the Goo::Canvas::property_units() property can be used to change the units to points, inches or millimeters.

Parameters

left	A pointer to a #gdouble to return the left edge, or `0`.
top	A pointer to a #gdouble to return the top edge, or `0`.
right	A pointer to a #gdouble to return the right edge, or `0`.
bottom	A pointer to a #gdouble to return the bottom edge, or `0`.

void Goocanvas::Canvas::get_bounds ( Bounds& bounds ) const

double Goocanvas::Canvas::get_default_line_width ( ) const

Gets the default line width, which depends on the current units setting.

Returns: The default line width of the canvas.

Glib::RefPtr<Item> Goocanvas::Canvas::get_item ( const Glib::RefPtr< ItemModel >& model )

Gets the canvas item associated with the given Goo::CanvasItemModel.

This is only useful when set_root_item_model() has been used to set a model for the canvas.

For simple applications you can use get_item() to set up signal handlers for your items, e.g.

<informalexample><programlisting> item = goo_canvas_get_item (GOO_CANVAS (canvas), my_item); g_signal_connect (item, "button_press_event", (GtkSignalFunc) on_my_item_button_press, 0); </programlisting></informalexample>

More complex applications may want to use the Goo::Canvas::signal_item_created() signal to hook up their signal handlers.

Parameters

model A Goo::CanvasItemModel.

Returns: The canvas item corresponding to the given Goo::CanvasItemModel, or 0 if no canvas item has been created for it yet.

Glib::RefPtr<const Item> Goocanvas::Canvas::get_item ( const Glib::RefPtr< ItemModel >& model ) const

Gets the canvas item associated with the given Goo::CanvasItemModel.

This is only useful when set_root_item_model() has been used to set a model for the canvas.

For simple applications you can use get_item() to set up signal handlers for your items, e.g.

More complex applications may want to use the Goo::Canvas::signal_item_created() signal to hook up their signal handlers.

Parameters

model A Goo::CanvasItemModel.

Returns: The canvas item corresponding to the given Goo::CanvasItemModel, or 0 if no canvas item has been created for it yet.

Glib::RefPtr<Item> Goocanvas::Canvas::get_item_at	(	double	x,
		double	y,
		bool	is_pointer_event
	)

Gets the item at the given point.

Parameters

x	The x coordinate of the point.
y	The y coordinate of the point.
is_pointer_event	`true` if the "pointer-events" property of items should be used to determine which parts of the item are tested.

Returns: The item found at the given point, or 0 if no item was found.

Glib::RefPtr<const Item> Goocanvas::Canvas::get_item_at	(	double	x,
		double	y,
		bool	is_pointer_event
	)		const

Gets the item at the given point.

Parameters

x	The x coordinate of the point.
y	The y coordinate of the point.
is_pointer_event	`true` if the "pointer-events" property of items should be used to determine which parts of the item are tested.

Returns: The item found at the given point, or 0 if no item was found.

std::vector< Glib::RefPtr<Item> > Goocanvas::Canvas::get_items_at	(	double	x,
		double	y,
		bool	is_pointer_event
	)

Gets all items at the given point.

Parameters

x	The x coordinate of the point.
y	The y coordinate of the point.
is_pointer_event	`true` if the "pointer-events" property of items should be used to determine which parts of the item are tested.

Returns: A list of items found at the given point, with the top item at the start of the list, or 0 if no items were found. The list must be freed with Glib::list_free().

std::vector< Glib::RefPtr<const Item> > Goocanvas::Canvas::get_items_at	(	double	x,
		double	y,
		bool	is_pointer_event
	)		const

Gets all items at the given point.

Parameters

x	The x coordinate of the point.
y	The y coordinate of the point.
is_pointer_event	`true` if the "pointer-events" property of items should be used to determine which parts of the item are tested.

Returns: A list of items found at the given point, with the top item at the start of the list, or 0 if no items were found. The list must be freed with Glib::list_free().

std::vector< Glib::RefPtr<Item> > Goocanvas::Canvas::get_items_in_area	(	const Bounds&	area,
		bool	inside_area,
		bool	allow_overlaps,
		bool	include_containers
	)

Gets a list of items inside or outside a given area.

Parameters

area	The area to compare with each item's bounds.
inside_area	`true` if items inside area should be returned, or `false` if items outside area should be returned.
allow_overlaps	`true` if items which are partly inside and partly outside should be returned.
include_containers	`true` if containers should be checked as well as normal items.

Returns: A list of items in the given area, or 0 if no items are found. The list should be freed with Glib::list_free().

std::vector< Glib::RefPtr<const Item> > Goocanvas::Canvas::get_items_in_area	(	const Bounds&	area,
		bool	inside_area,
		bool	allow_overlaps,
		bool	include_containers
	)		const

Gets a list of items inside or outside a given area.

Parameters

area	The area to compare with each item's bounds.
inside_area	`true` if items inside area should be returned, or `false` if items outside area should be returned.
allow_overlaps	`true` if items which are partly inside and partly outside should be returned.
include_containers	`true` if containers should be checked as well as normal items.

Returns: A list of items in the given area, or 0 if no items are found. The list should be freed with Glib::list_free().

Glib::RefPtr<Item> Goocanvas::Canvas::get_root_item ( )

Gets the root item of the canvas, usually a Goo::CanvasGroup.

Returns: The root item, or 0 if there is no root item.

Glib::RefPtr<const Item> Goocanvas::Canvas::get_root_item ( ) const

Gets the root item of the canvas, usually a Goo::CanvasGroup.

Returns: The root item, or 0 if there is no root item.

Glib::RefPtr<ItemModel> Goocanvas::Canvas::get_root_item_model ( )

Gets the root item model of the canvas.

Returns: The root item model, or 0 if there is no root item model.

Glib::RefPtr<const ItemModel> Goocanvas::Canvas::get_root_item_model ( ) const

Gets the root item model of the canvas.

Returns: The root item model, or 0 if there is no root item model.

double Goocanvas::Canvas::get_scale ( ) const

Gets the current scale of the canvas.

The scale specifies the magnification factor of the canvas, e.g. if an item has a width of 2 pixels and the scale is set to 3, it will be displayed with a width of 2 x 3 = 6 pixels.

Returns: The current scale setting.

Glib::RefPtr<Item> Goocanvas::Canvas::get_static_root_item ( )

Glib::RefPtr<const Item> Goocanvas::Canvas::get_static_root_item ( ) const

Glib::RefPtr<ItemModel> Goocanvas::Canvas::get_static_root_item_model ( )

Glib::RefPtr<const ItemModel> Goocanvas::Canvas::get_static_root_item_model ( ) const

static GType Goocanvas::Canvas::get_type ( )

static

Get the GType for this class, for use with the underlying GObject type system.

GooCanvas* Goocanvas::Canvas::gobj ( )

inline

Provides access to the underlying C GtkObject.

const GooCanvas* Goocanvas::Canvas::gobj ( ) const

inline

Provides access to the underlying C GtkObject.

void Goocanvas::Canvas::grab_focus ( const Glib::RefPtr< Item >& item )

Grabs the keyboard focus for the given item.

Parameters

item	The item to grab the focus.

GdkGrabStatus Goocanvas::Canvas::keyboard_grab	(	const Glib::RefPtr< Item >&	item,
		bool	owner_events,
		guint32	time
	)

Attempts to grab the keyboard for the given item.

Parameters

item	The item to grab the keyboard for.
owner_events	`true` if keyboard events for this application will be reported normally, or `false` if all keyboard events will be reported with respect to the grab item.
time	The time of the event that lead to the keyboard grab. This should come from the relevant Gdk::Event.

Returns: Gdk::GRAB_SUCCESS if the grab succeeded.

void Goocanvas::Canvas::keyboard_ungrab	(	const Glib::RefPtr< Item >&	item,
		guint32	time
	)

Ungrabs the keyboard, if the given item has the keyboard grab.

Parameters

item	The item that has the keyboard grab.
time	The time of the event that lead to the keyboard ungrab. This should come from the relevant Gdk::Event.

virtual void Goocanvas::Canvas::on_item_created	(	const Glib::RefPtr< Item >&	item,
		const Glib::RefPtr< ItemModel >&	model
	)

protectedvirtual

This is a default handler for the signal signal_item_created().

Canvas& Goocanvas::Canvas::operator= ( Canvas&& src )

noexcept

Canvas& Goocanvas::Canvas::operator= ( const Canvas& )

delete

Gdk::GrabStatus Goocanvas::Canvas::pointer_grab	(	const Glib::RefPtr< Item >&	item,
		Gdk::EventMask	mask,
		const Glib::RefPtr< Gdk::Cursor > &	cursor,
		guint32	time
	)

Attempts to grab the pointer for the given item.

Parameters

item	The item to grab the pointer for.
mask	The events to receive during the grab.
cursor	The cursor to display during the grab, or `0`.
time	The time of the event that lead to the pointer grab. This should come from the relevant Gdk::Event.

Returns: Gdk::GRAB_SUCCESS if the grab succeeded.

Gdk::GrabStatus Goocanvas::Canvas::pointer_grab	(	const Glib::RefPtr< Item >&	item,
		Gdk::EventMask	mask,
		guint32	time
	)

void Goocanvas::Canvas::pointer_ungrab	(	const Glib::RefPtr< Item >&	item,
		guint32	time
	)

Ungrabs the pointer, if the given item has the pointer grab.

Parameters

item	The item that has the grab.
time	The time of the event that lead to the pointer ungrab. This should come from the relevant Gdk::Event.

Glib::PropertyProxy< AnchorType > Goocanvas::Canvas::property_anchor ( )

Where to place the canvas when it is smaller than the widget's allocated area.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< AnchorType > Goocanvas::Canvas::property_anchor ( ) const

Where to place the canvas when it is smaller than the widget's allocated area.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< bool > Goocanvas::Canvas::property_automatic_bounds ( )

If the bounds are automatically calculated based on the bounds of all the items in the canvas.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< bool > Goocanvas::Canvas::property_automatic_bounds ( ) const

If the bounds are automatically calculated based on the bounds of all the items in the canvas.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_WriteOnly< Glib::ustring > Goocanvas::Canvas::property_background_color ( )

The color to use for the canvas background.

Returns: A PropertyProxy_WriteOnly that allows you to set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_WriteOnly< Gdk::RGBA > Goocanvas::Canvas::property_background_color_gdk_rgba ( )

The color to use for the canvas background, specified as a GdkRGBA.

Returns: A PropertyProxy_WriteOnly that allows you to set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_WriteOnly< guint > Goocanvas::Canvas::property_background_color_rgb ( )

The color to use for the canvas background, specified as a 24-bit integer value, 0xRRGGBB.

Returns: A PropertyProxy_WriteOnly that allows you to set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< bool > Goocanvas::Canvas::property_bounds_from_origin ( )

If the automatic bounds are calculated from the origin.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< bool > Goocanvas::Canvas::property_bounds_from_origin ( ) const

If the automatic bounds are calculated from the origin.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< double > Goocanvas::Canvas::property_bounds_padding ( )

The padding added to the automatic bounds.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< double > Goocanvas::Canvas::property_bounds_padding ( ) const

The padding added to the automatic bounds.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< bool > Goocanvas::Canvas::property_clear_background ( )

If the background is cleared before the canvas is painted.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< bool > Goocanvas::Canvas::property_clear_background ( ) const

If the background is cleared before the canvas is painted.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< bool > Goocanvas::Canvas::property_integer_layout ( )

If all item layout is done to the nearest integer.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< bool > Goocanvas::Canvas::property_integer_layout ( ) const

If all item layout is done to the nearest integer.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< double > Goocanvas::Canvas::property_resolution_x ( )

The horizontal resolution of the display, in dots per inch.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< double > Goocanvas::Canvas::property_resolution_x ( ) const

The horizontal resolution of the display, in dots per inch.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< double > Goocanvas::Canvas::property_resolution_y ( )

The vertical resolution of the display, in dots per inch.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< double > Goocanvas::Canvas::property_resolution_y ( ) const

The vertical resolution of the display, in dots per inch.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< double > Goocanvas::Canvas::property_scale ( )

The magnification factor of the canvas.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< double > Goocanvas::Canvas::property_scale ( ) const

The magnification factor of the canvas.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< double > Goocanvas::Canvas::property_scale_x ( )

The horizontal magnification factor of the canvas.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< double > Goocanvas::Canvas::property_scale_x ( ) const

The horizontal magnification factor of the canvas.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< double > Goocanvas::Canvas::property_scale_y ( )

The vertical magnification factor of the canvas.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< double > Goocanvas::Canvas::property_scale_y ( ) const

The vertical magnification factor of the canvas.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< Gtk::Unit > Goocanvas::Canvas::property_units ( )

The units to use for the canvas.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< Gtk::Unit > Goocanvas::Canvas::property_units ( ) const

The units to use for the canvas.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< double > Goocanvas::Canvas::property_x1 ( )

The x coordinate of the left edge of the canvas bounds, in canvas units.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< double > Goocanvas::Canvas::property_x1 ( ) const

The x coordinate of the left edge of the canvas bounds, in canvas units.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< double > Goocanvas::Canvas::property_x2 ( )

The x coordinate of the right edge of the canvas bounds, in canvas units.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< double > Goocanvas::Canvas::property_x2 ( ) const

The x coordinate of the right edge of the canvas bounds, in canvas units.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< double > Goocanvas::Canvas::property_y1 ( )

The y coordinate of the top edge of the canvas bounds, in canvas units.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< double > Goocanvas::Canvas::property_y1 ( ) const

The y coordinate of the top edge of the canvas bounds, in canvas units.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy< double > Goocanvas::Canvas::property_y2 ( )

The y coordinate of the bottom edge of the canvas bounds, in canvas units.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< double > Goocanvas::Canvas::property_y2 ( ) const

The y coordinate of the bottom edge of the canvas bounds, in canvas units.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

void Goocanvas::Canvas::register_widget_item ( const Glib::RefPtr< Goocanvas::Widget >& widget )

This function should only be used by Goo::CanvasWidget and subclass implementations.

It registers a widget item with the canvas, so that the canvas can do the necessary actions to move and resize the widget as needed.

Parameters

widget A Goo::CanvasWidget item.

void Goocanvas::Canvas::render	(	const Cairo::RefPtr< Cairo::Context > &	context,
		const Bounds&	bounds,
		double	scale = `0.0`
	)

Renders all or part of a canvas to the given cairo context.

Parameters

context	A cairo context.
bounds	The area to render, or `0` to render the entire canvas.
scale	The scale to compare with each item's visibility threshold to see if they should be rendered. This only affects items that have their visibility set to Goo::CANVAS_ITEM_VISIBLE_ABOVE_THRESHOLD.

void Goocanvas::Canvas::render	(	const Cairo::RefPtr< Cairo::Context > &	context,
		double	scale = `0.0`
	)

void Goocanvas::Canvas::request_item_redraw	(	const Bounds&	bounds,
		bool	is_static = `false`
	)

void Goocanvas::Canvas::request_redraw ( const Bounds& bounds )

This function is only intended to be used by subclasses of Goo::Canvas or Goo::CanvasItem implementations.

Requests that the given bounds be redrawn.

Parameters

bounds The bounds to redraw.

void Goocanvas::Canvas::request_update ( )

This function is only intended to be used by subclasses of Goo::Canvas or Goo::CanvasItem implementations.

It schedules an update of the Goo::Canvas. This will be performed in the idle loop, after all pending events have been handled, but before the canvas has been repainted.

void Goocanvas::Canvas::scroll_to	(	double	left,
		double	top
	)

Scrolls the canvas, placing the given point as close to the top-left of the view as possible.

Parameters

left	The x coordinate to scroll to.
top	The y coordinate to scroll to.

void Goocanvas::Canvas::set_bounds	(	double	left,
		double	top,
		double	right,
		double	bottom
	)

Sets the bounds of the Goo::Canvas, in canvas units.

By default, canvas units are pixels, though the Goo::Canvas::property_units() property can be used to change the units to points, inches or millimeters.

Parameters

left	The left edge.
top	The top edge.
right	The right edge.
bottom	The bottom edge.

void Goocanvas::Canvas::set_bounds ( const Bounds& bounds )

void Goocanvas::Canvas::set_root_item ( const Glib::RefPtr< Item >& item )

Sets the root item of the canvas.

Any existing canvas items are removed.

Parameters

item	The root canvas item.

void Goocanvas::Canvas::set_root_item_model ( const Glib::RefPtr< ItemModel >& model )

Sets the root item model of the canvas.

A hierarchy of canvas items will be created, corresponding to the hierarchy of items in the model. Any current canvas items will be removed.

Parameters

model A Goo::CanvasItemModel.

void Goocanvas::Canvas::set_scale ( double scale )

Sets the scale of the canvas.

The scale specifies the magnification factor of the canvas, e.g. if an item has a width of 2 pixels and the scale is set to 3, it will be displayed with a width of 2 x 3 = 6 pixels.

Parameters

scale The new scale setting.

void Goocanvas::Canvas::set_static_root_item ( const Glib::RefPtr< Item >& item )

void Goocanvas::Canvas::set_static_root_item_model ( const Glib::RefPtr< ItemModel >& model )

Glib::SignalProxy2< void,const Glib::RefPtr<Item>&,const Glib::RefPtr<ItemModel>& > Goocanvas::Canvas::signal_item_created ( )

Slot Prototype:: void on_my_item_created(const Glib::RefPtr<Item>& item, const Glib::RefPtr<ItemModel>& model)

void Goocanvas::Canvas::unregister_item ( const Glib::RefPtr< ItemModel >& model )

This function is only intended to be used when implementing new canvas items.

It should be called in the finalize method of Goo::CanvasItem objects, to remove the canvas item from the Goo::Canvas's hash table.

Parameters

model The item model whose canvas item is being finalized.

void Goocanvas::Canvas::unregister_widget_item ( const Glib::RefPtr< Goocanvas::Widget >& widget )

This function should only be used by Goo::CanvasWidget and subclass implementations.

It unregisters a widget item from the canvas, when the item is no longer in the canvas.

Parameters

widget A Goo::CanvasWidget item.

void Goocanvas::Canvas::update ( )

This function is only intended to be used by subclasses of Goo::Canvas or Goo::CanvasItem implementations.

It updates any items that need updating.

If the bounds of items change, they will request a redraw of the old and new bounds so the display is updated correctly.

Friends And Related Function Documentation

Goocanvas::Canvas* wrap	(	GooCanvas *	object,
		bool	take_copy = `false`
	)

A Glib::wrap() method for this object.

Parameters

object	The C instance.
take_copy	False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns: A C++ instance that wraps this C instance.

The documentation for this class was generated from the following file:

goocanvasmm/canvas.h

goocanvasmm: Goocanvas::Canvas Class Reference

Public Member Functions

Static Public Member Functions

Protected Member Functions

Related Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation