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Diffstat (limited to 'include/gutenprintui2/curve.h')
-rw-r--r-- | include/gutenprintui2/curve.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/include/gutenprintui2/curve.h b/include/gutenprintui2/curve.h new file mode 100644 index 0000000..1c80faf --- /dev/null +++ b/include/gutenprintui2/curve.h @@ -0,0 +1,127 @@ +/* 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 Lesser 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +/* + * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS + * file for a list of people on the GTK+ Team. See the ChangeLog + * files for a list of changes. These files are distributed with + * GTK+ at ftp://ftp.gtk.org/pub/gtk/. + */ + +/* + * NOTE this widget is considered too specialized/little-used for + * GTK+, and will in the future be moved to some other package. If + * your application needs this widget, feel free to use it, as the + * widget does work and is useful in some applications; it's just not + * of general interest. However, we are not accepting new features for + * the widget, and it will eventually move out of the GTK+ + * distribution. + */ + +#ifndef GUTENPRINTUI_CURVE_H +#define GUTENPRINTUI_CURVE_H + + +#include <gdk/gdk.h> +#include <gtk/gtkdrawingarea.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + + +#define STPUI_TYPE_CURVE (stpui_curve_get_type ()) +#define STPUI_CURVE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), STPUI_TYPE_CURVE, StpuiCurve)) +#define STPUI_CURVE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), STPUI_TYPE_CURVE, StpuiCurveClass)) +#define STPUI_IS_CURVE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), STPUI_TYPE_CURVE)) +#define STPUI_IS_CURVE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), STPUI_TYPE_CURVE)) +#define STPUI_CURVE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), STPUI_TYPE_CURVE, StpuiCurveClass)) + + +/* Curve types */ +typedef enum +{ + STPUI_CURVE_TYPE_LINEAR, /* linear interpolation */ + STPUI_CURVE_TYPE_SPLINE, /* spline interpolation */ + STPUI_CURVE_TYPE_FREE /* free form curve */ +} StpuiCurveType; + + +typedef struct _StpuiCurve StpuiCurve; +typedef struct _StpuiCurveClass StpuiCurveClass; + + +struct _StpuiCurve +{ + GtkDrawingArea graph; + + gint cursor_type; + gfloat min_x; + gfloat max_x; + gfloat min_y; + gfloat max_y; + GdkPixmap *pixmap; + StpuiCurveType 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 _StpuiCurveClass +{ + GtkDrawingAreaClass parent_class; + + void (* curve_type_changed) (StpuiCurve *curve); + + /* Padding for future expansion */ + void (*_gtk_reserved1) (void); + void (*_gtk_reserved2) (void); + void (*_gtk_reserved3) (void); + void (*_gtk_reserved4) (void); +}; + + +GType stpui_curve_get_type (void) G_GNUC_CONST; +GtkWidget* stpui_curve_new (void); +void stpui_curve_reset (StpuiCurve *curve); +void stpui_curve_set_gamma (StpuiCurve *curve, gfloat gamma_); +void stpui_curve_set_range (StpuiCurve *curve, + gfloat min_x, gfloat max_x, + gfloat min_y, gfloat max_y); +void stpui_curve_get_vector (StpuiCurve *curve, + int veclen, gfloat vector[]); +void stpui_curve_set_vector (StpuiCurve *curve, + int veclen, const gfloat vector[]); +void stpui_curve_set_curve_type (StpuiCurve *curve, StpuiCurveType type); + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + + +#endif /* GUTENPRINTUI_CURVE_H */ |