GtkCurve: GtkCurve
In RGtk2: R Bindings for Gtk 2.8.0 and Above

Description Methods and Functions Hierarchy Interfaces Detailed Description Structures Convenient Construction Signals Properties Author(s) References

Allows direct editing of a curve

gtkCurveNew(show = TRUE)
gtkCurveReset(object)
gtkCurveSetGamma(object, gamma)
gtkCurveSetRange(object, min.x, max.x, min.y, max.y)
gtkCurveGetVector(object, veclen)
gtkCurveSetVector(object, vector)
gtkCurveSetCurveType(object, type)
gtkCurve(show = TRUE)

GObject
   +----GInitiallyUnowned
         +----GtkObject
               +----GtkWidget
                     +----GtkDrawingArea
                           +----GtkCurve

GtkCurve implements AtkImplementorIface and GtkBuildable.

The GtkCurve widget allows the user to edit a curve covering a range of values. It is typically used to fine-tune color balances in graphics applications like the Gimp.

The GtkCurve widget has 3 modes of operation - spline, linear and free. In spline mode the user places points on the curve which are automatically connected together into a smooth curve. In linear mode the user places points on the curve which are connected by straight lines. In free mode the user can draw the points of the curve freely, and they are not connected at all.

As of GTK+ 2.20, GtkCurve has been deprecated since it is too specialized.

GtkCurve: WARNING: GtkCurve is deprecated and should not be used in newly-written code. The GtkCurve struct contains private data only, and should be accessed using the functions below.

gtkCurve is the equivalent of gtkCurveNew.

curve-type-changed(curve, user.data)

Emitted when the curve type has been changed. The curve type can be changed explicitly with a call to gtkCurveSetCurveType. It is also changed as a side-effect of calling gtkCurveReset or gtkCurveSetGamma.

curve: the object which received the signal.
user.data: user data set when the signal handler was connected.

curve-type [GtkCurveType : Read / Write]: Is this curve linear, spline interpolated, or free-form. Default value: GTK_CURVE_TYPE_SPLINE
max-x [numeric : Read / Write]: Maximum possible X value. Default value: 1
max-y [numeric : Read / Write]: Maximum possible value for Y. Default value: 1
min-x [numeric : Read / Write]: Minimum possible value for X. Default value: 0
min-y [numeric : Read / Write]: Minimum possible value for Y. Default value: 0