The gWidgets2 package provides a programming interface for making graphical user interfaces within R. The package is a rewrite of the gWidgets package, introducing a few external changes but a significant number of internal ones. The package relies on one of several underlying toolkit packages providing access to the graphical libraries. This package provides the implementation to interface with the underlying RGtk2 package.
GComponent is a parent class for both GContainer and GWidget and inherits its primary interface from gWidgets2::BasicToolkitInterface.
GContainer is the base class for container objects. The main
method is add_child, but there is also book-keepingn code
to keep track of the child components of the container
GWidget is the Base class for widget objects
GWidgetWithItems is Base class for selection widgets based on a set of items. The key here is the handlers apply to each item, but the handler is assigned to the class member.
For RGtk2, the GButton class has the extra reference method
set_border. The border argument has been deprecated.
This GTable class for RGtk2 implements a few additional reference
methods: hide_names to hide the header names;
remove_popup_menu to remove the popup menu;
add_popup to add a popup menu
Passing in a value freeze_attributes = TRUE will make it so
there are no menu items to resize frame, change variable types,
relabel factors, .... Values of "row" or "column"
will remove popup menus just for the row or columns.
The label class for RGtk2 has the extra method
set_angle to set the angle for the
text. A value of 90 will rotate ccw to read bottom to top
For RGtk2, the Gprogressbar class has the extra reference method
set_border. The border argument has been deprecated.
The main reference methods GTimer are start_timer and stop_timer
passed to constructor
add_drag_motion(handler, action = NULL, ...)Called when motion over widget occurs
add_to_parent(parent, child, expand = NULL, fill = NULL, anchor = NULL,
...)Add a child to parent if it is ia container and non null. Dispatches to add_child method of parent
get_enabled()is widget sensistive to user input
set_enabled(value, ...)specify with logical if widget is sensistive to user input
set_rgtk2_font(obj, value)Set font on a gtkWidget instance
set_size(value, ...)Set widget size (size request), value=c(width=-1, height=-1)
child_bookkeeping(child)Update parent property of child and children property of parent container
set_child_align(child, alt_child, anchor)Set child alignment, if a GtkMisc or GtkAlignment object
set_child_fill(child, fill, horizontal = TRUE)Fill can be NULL, TRUE, FALSE, '', 'both', 'x', 'y'...
connect_to_toolkit_signal(signal, decorator, emitter = .self$handler_widget())Connect signal of toolkit to notify observer
get_value(drop = NULL, ...)Get main value of widget. From `svalue` when index = FALSE or NULL
remove_border()Remove border by setting relief to none
set_value(value, ..., drop = NULL)for `svalue<-` when index = FALSE or NULL
add_popup(menu_fun = NULL)Add a popup menu to the columns. Function should generate list of actions, ...
clear_columns()Clear out old treeview columns in preparation of new
default_popup_menu(col_index)Provide default popup menu (passed to gmenu(..., popup=TRUE))
get_index(drop = NULL, ...)svalue; index=TRUE
get_length(...)Get length of object. Needed for sapply.
get_model()Helper: get rGtkDataFrame model, which is filtered
get_selected()Get selected indices or numeric(0)
get_valid_columns()Helper: get column indices less those for icons, tooltips, visible
get_value(drop = NULL, ...)Get main value of widget. From `svalue` when index = FALSE or NULL
get_view_columns()Helper: get non-icon columns to iterate over
hide_names(value)adjust visibility of header
make_columns()Make new columns, watching out for icons, tooltips, visible
make_icon_column()Make column for icons
not_these()Helper: Remove these indices due to icon_col, ...
remove_popup_menu()remove popup menu from column headers
set_focus(value)If we can focus, do so, then raise
set_selected(ind)Set selected rows by index
set_selection_mode(mode = c("none", "single", "browse", "multiple",
"extended"))Helper: Set the selection mode
set_size(value, ...)Set widget size (size request), value=c(width=-1, height=-1)
set_value(value, ..., drop = NULL)for `svalue<-` when index = FALSE or NULL
get_value(drop = NULL, ...)Get main value of widget. From `svalue` when index = FALSE or NULL
set_angle(angle)Rotate text by angle degrees ccw
set_value(value, ..., drop = NULL)for `svalue<-` when index = FALSE or NULL
get_value(drop = NULL, ...)Get main value of widget. From `svalue` when index = FALSE or NULL
set_value(value, ..., drop = NULL)for `svalue<-` when index = FALSE or NULL
set_interval(ms)Set the interval. Need to stop and start active timer to implement.
start_timer()Start the timer
stop_timer()stop the timer