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Gwyddion Widgets Library Reference Manual | ![]() |
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Top | Description | Object Hierarchy | Implemented Interfaces | Properties | Signals |
#include <libgwydgets/gwydgets.h> struct GwyCurve; struct GwyCurveClass; GwyPoint; GwyChannelData; GtkWidget * gwy_curve_new (void
); void gwy_curve_reset (GwyCurve *curve
); void gwy_curve_set_range (GwyCurve *curve
,gdouble min_x
,gdouble max_x
,gdouble min_y
,gdouble max_y
); void gwy_curve_set_curve_type (GwyCurve *curve
,GwyCurveType type
); void gwy_curve_set_channels (GwyCurve *curve
,gint num_channels
,GwyRGBA *colors
); void gwy_curve_set_control_points (GwyCurve *curve
,GwyChannelData *channel_data
,gboolean prune
); void gwy_curve_get_control_points (GwyCurve *curve
,GwyChannelData *channel_data
,gboolean triplets
);
GObject +----GInitiallyUnowned +----GtkObject +----GtkWidget +----GtkDrawingArea +----GwyCurve
"curve-type" GwyCurveType : Read / Write "max-x" gfloat : Read / Write "max-y" gfloat : Read / Write "min-x" gfloat : Read / Write "min-y" gfloat : Read / Write "snap" gboolean : Read / Write
GwyCurve is a widget that can display multiple curves. The user can edit these curves by clicking and dragging control points. New control points are created when a user clicks on a part of a curve where there are no control points. Control points can be deleted by dragging ontop of another control point.
struct GwyCurveClass { GtkDrawingAreaClass parent_class; /* Signals */ void (*curve_type_changed)(GwyCurve *curve); void (*curve_edited)(GwyCurve *curve); /* Padding for future expansion */ void (*_gwy_reserved1) (void); void (*_gwy_reserved2) (void); void (*_gwy_reserved3) (void); void (*_gwy_reserved4) (void); };
typedef struct { /* curve points: */ gint num_points; GwyPoint *points; /* control points: */ gint num_ctlpoints; GwyPoint *ctlpoints; GwyRGBA color; } GwyChannelData;
GtkWidget * gwy_curve_new (void
);
Creates GwyCurve widget. By default, the widget will have 3 curves.
Returns : |
new GwyCurve widget. |
void gwy_curve_reset (GwyCurve *curve
);
Removes all control points, resetting the curves to their initial state.
|
a GwyCurve widget. |
void gwy_curve_set_range (GwyCurve *curve
,gdouble min_x
,gdouble max_x
,gdouble min_y
,gdouble max_y
);
void gwy_curve_set_channels (GwyCurve *curve
,gint num_channels
,GwyRGBA *colors
);
void gwy_curve_set_control_points (GwyCurve *curve
,GwyChannelData *channel_data
,gboolean prune
);
void gwy_curve_get_control_points (GwyCurve *curve
,GwyChannelData *channel_data
,gboolean triplets
);
"curve-type"
property"curve-type" GwyCurveType : Read / Write
Is this curve linear, spline interpolated, or free-form.
Default value: GWY_CURVE_TYPE_LINEAR