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annotate src/xs_curve.h @ 370:df6f12a00305

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Work on filter curve widget begins, based on GtkCurve widget from Gtk+ 1.2.10.
author Matti Hamalainen <ccr@tnsp.org>
date Wed, 09 Nov 2005 05:52:01 +0000
parents 4f247b19c9ea
children 58079c6180a0
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df6f12a00305 Work on filter curve widget begins, based on GtkCurve widget from Gtk+ 1.2.10.
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1 #ifndef _XS_CURVE_H
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2 #define _XS_CURVE_H
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3
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4 #include <gdk/gdk.h>
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5 #include <gtk/gtkdrawingarea.h>
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6
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7 #ifdef __cplusplus
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8 extern "C" {
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9 #endif
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10
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12 #define XS_TYPE_CURVE (xs_curve_get_type ())
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13 #define XS_CURVE(obj) (GTK_CHECK_CAST ((obj), XS_TYPE_CURVE, XSCurve))
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14 #define XS_CURVE_CLASS(luokka) (GTK_CHECK_CLASS_CAST ((luokka), XS_TYPE_CURVE, XSCurveClass))
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15 #define XS_IS_CURVE(obj) (GTK_CHECK_TYPE ((obj), XS_TYPE_CURVE))
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16 #define XS_IS_CURVE_CLASS(luokka) (GTK_CHECK_CLASS_TYPE ((luokka), XS_TYPE_CURVE))
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19 typedef struct _XSCurve XSCurve;
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20 typedef struct _XSCurveClass XSCurveClass;
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23 struct _XSCurve
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24 {
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25 GtkDrawingArea graph;
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26
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27 gint cursor_type;
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28 gfloat min_x;
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29 gfloat max_x;
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30 gfloat min_y;
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31 gfloat max_y;
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32 GdkPixmap *pixmap;
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33 GtkCurveType curve_type;
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34 gint height; /* (cached) graph height in pixels */
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35 gint grab_point; /* point currently grabbed */
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36 gint last;
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37
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38 /* (cached) curve points: */
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39 gint num_points;
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40 GdkPoint *point;
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41
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42 /* control points: */
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43 gint num_ctlpoints; /* number of control points */
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44 gfloat (*ctlpoint)[2]; /* array of control points */
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45 };
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47 struct _XSCurveClass
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48 {
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49 GtkDrawingAreaClass parent_class;
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51 void (* curve_type_changed) (XSCurve *curve);
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52 };
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55 GtkType xs_curve_get_type (void);
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56 GtkWidget* xs_curve_new (void);
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57 void xs_curve_reset (XSCurve *curve);
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58 void xs_curve_set_gamma (XSCurve *curve, gfloat gamma);
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59 void xs_curve_set_range (XSCurve *curve,
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60 gfloat min_x, gfloat max_x,
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61 gfloat min_y, gfloat max_y);
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62 void xs_curve_get_vector (XSCurve *curve,
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63 int veclen, gfloat vector[]);
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64 void xs_curve_set_vector (XSCurve *curve,
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65 int veclen, gfloat vector[]);
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66 void xs_curve_set_curve_type (XSCurve *curve, GtkCurveType type);
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67
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68
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69 #ifdef __cplusplus
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70 }
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71 #endif
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73 #endif /* _XS_CURVE_H */