mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-12-26 13:41:07 +00:00
97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
/* GTK - The GIMP Toolkit
|
|
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the Free
|
|
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
#ifndef __GTK_CURVE_H__
|
|
#define __GTK_CURVE_H__
|
|
|
|
|
|
#include <gdk/gdk.h>
|
|
#include <gtk/gtkdrawingarea.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif /* __cplusplus */
|
|
|
|
|
|
#define GTK_CURVE(obj) GTK_CHECK_CAST (obj, gtk_curve_get_type (), GtkCurve)
|
|
#define GTK_CURVE_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, gtk_curve_get_type, GtkCurveClass)
|
|
#define GTK_IS_CURVE(obj) GTK_CHECK_TYPE (obj, gtk_curve_get_type ())
|
|
|
|
|
|
typedef struct _GtkCurve GtkCurve;
|
|
typedef struct _GtkCurveClass GtkCurveClass;
|
|
|
|
typedef enum
|
|
{
|
|
GTK_CURVE_TYPE_LINEAR, /* linear interpolation */
|
|
GTK_CURVE_TYPE_SPLINE, /* spline interpolation */
|
|
GTK_CURVE_TYPE_FREE /* free form curve */
|
|
} GtkCurveType;
|
|
|
|
struct _GtkCurve
|
|
{
|
|
GtkDrawingArea graph;
|
|
|
|
gint cursor_type;
|
|
gfloat min_x;
|
|
gfloat max_x;
|
|
gfloat min_y;
|
|
gfloat max_y;
|
|
GdkPixmap *pixmap;
|
|
GtkCurveType curve_type;
|
|
gint height; /* (cached) graph height in pixels */
|
|
gint grab_point; /* point currently grabbed */
|
|
gint last;
|
|
|
|
/* (cached) curve points: */
|
|
gint num_points;
|
|
GdkPoint *point;
|
|
|
|
/* control points: */
|
|
gint num_ctlpoints; /* number of control points */
|
|
gfloat (*ctlpoint)[2]; /* array of control points */
|
|
};
|
|
|
|
struct _GtkCurveClass
|
|
{
|
|
GtkDrawingAreaClass parent_class;
|
|
|
|
void (* curve_type_changed) (GtkCurve *curve);
|
|
};
|
|
|
|
|
|
guint gtk_curve_get_type (void);
|
|
GtkWidget* gtk_curve_new (void);
|
|
void gtk_curve_reset (GtkCurve *curve);
|
|
void gtk_curve_set_gamma (GtkCurve *curve, gfloat gamma);
|
|
void gtk_curve_set_range (GtkCurve *curve,
|
|
gfloat min_x, gfloat max_x,
|
|
gfloat min_y, gfloat max_y);
|
|
void gtk_curve_get_vector (GtkCurve *curve,
|
|
int veclen, gfloat vector[]);
|
|
void gtk_curve_set_vector (GtkCurve *curve,
|
|
int veclen, gfloat vector[]);
|
|
void gtk_curve_set_curve_type (GtkCurve *curve, GtkCurveType type);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif /* __cplusplus */
|
|
|
|
|
|
#endif /* __GTK_CURVE_H__ */
|