RGtk2: GtkLayout – R documentation

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Documentation

RGtk2

GtkLayout

Description

Infinite scrollable area containing child widgets and/or custom drawing

Methods and Functions

gtkLayoutNew(hadjustment = NULL, vadjustment = NULL, show = TRUE)
gtkLayoutPut(object, child.widget, x, y)
gtkLayoutMove(object, child.widget, x, y)
gtkLayoutSetSize(object, width, height)
gtkLayoutGetSize(object)
gtkLayoutFreeze(object)
gtkLayoutThaw(object)
gtkLayoutGetHadjustment(object)
gtkLayoutGetVadjustment(object)
gtkLayoutSetHadjustment(object, adjustment = NULL)
gtkLayoutSetVadjustment(object, adjustment = NULL)
gtkLayoutGetBinWindow(object)
gtkLayout(hadjustment = NULL, vadjustment = NULL, show = TRUE)

Hierarchy

GObject
   +----GInitiallyUnowned
         +----GtkObject
               +----GtkWidget
                     +----GtkContainer
                           +----GtkLayout

Interfaces

GtkLayout implements AtkImplementorIface and GtkBuildable.

Detailed Description

GtkLayout is similar to GtkDrawingArea in that it's a "blank slate" and doesn't do anything but paint a blank background by default. It's different in that it supports scrolling natively (you can add it to a GtkScrolledWindow), and it can contain child widgets, since it's a GtkContainer. However if you're just going to draw, a GtkDrawingArea is a better choice since it has lower overhead.

When handling expose events on a GtkLayout, you must draw to GTK_LAYOUT (layout)->bin_window, rather than to GTK_WIDGET (layout)->window, as you would for a drawing area.

Structures

GtkLayout

undocumented

binWindow: [GdkWindow]

Convenient Construction

gtkLayout is the equivalent of gtkLayoutNew.

Signals

set-scroll-adjustments(horizontal, vertical, user.data)

Set the scroll adjustments for the layout. Usually scrolled containers like GtkScrolledWindow will emit this signal to connect two instances of GtkScrollbar to the scroll directions of the GtkLayout.

horizontal: the horizontal GtkAdjustment
vertical: the vertical GtkAdjustment
user.data: user data set when the signal handler was connected.

Properties

hadjustment [GtkAdjustment : * : Read / Write]: The GtkAdjustment for the horizontal position.
height [numeric : Read / Write]: The height of the layout. Allowed values: <= G_MAXINT Default value: 100
vadjustment [GtkAdjustment : * : Read / Write]: The GtkAdjustment for the vertical position.
width [numeric : Read / Write]: The width of the layout. Allowed values: <= G_MAXINT Default value: 100

Author(s)

Derived by RGtkGen from GTK+ documentation

References

https://developer.gnome.org/gtk2/stable/GtkLayout.html