1 #ifndef INKSCAPE_LIVEPATHEFFECT_PARAMETER_H
2 #define INKSCAPE_LIVEPATHEFFECT_PARAMETER_H
4 /*
5 * Inkscape::LivePathEffectParameters
6 *
7 * Copyright (C) Johan Engelen 2007 <j.b.c.engelen@utwente.nl>
8 *
9 * Released under GNU GPL, read the file 'COPYING' for more information
10 */
12 #include <glibmm/ustring.h>
13 #include <2geom/point.h>
14 #include <2geom/path.h>
16 #include "ui/widget/registry.h"
17 #include "ui/widget/registered-widget.h"
19 struct SPDesktop;
20 struct SPItem;
22 namespace Gtk {
23 class Widget;
24 }
26 namespace Inkscape {
28 namespace LivePathEffect {
30 class Effect;
32 class Parameter {
33 public:
34 Parameter( const Glib::ustring& label,
35 const Glib::ustring& tip,
36 const Glib::ustring& key,
37 Inkscape::UI::Widget::Registry* wr,
38 Effect* effect);
39 virtual ~Parameter() {};
41 virtual bool param_readSVGValue(const gchar * strvalue) = 0; // returns true if new value is valid / accepted.
42 virtual gchar * param_writeSVGValue() const = 0;
44 virtual void param_set_default() = 0;
46 // This returns pointer to the parameter's widget to be put in the live-effects dialog. Must also create the
47 // necessary widget if it does not exist yet.
48 virtual Gtk::Widget * param_getWidget() = 0;
49 virtual Glib::ustring * param_getTooltip() { return ¶m_tooltip; };
51 virtual void param_editOncanvas(SPItem * item, SPDesktop * dt) { return; };
53 Glib::ustring param_key;
54 Inkscape::UI::Widget::Registry * param_wr;
55 Glib::ustring param_label;
57 bool oncanvas_editable;
59 protected:
60 Glib::ustring param_tooltip;
62 Effect* param_effect;
64 private:
65 Parameter(const Parameter&);
66 Parameter& operator=(const Parameter&);
67 };
70 class ScalarParam : public Parameter {
71 public:
72 ScalarParam( const Glib::ustring& label,
73 const Glib::ustring& tip,
74 const Glib::ustring& key,
75 Inkscape::UI::Widget::Registry* wr,
76 Effect* effect,
77 gdouble default_value = 1.0);
78 virtual ~ScalarParam();
80 virtual bool param_readSVGValue(const gchar * strvalue);
81 virtual gchar * param_writeSVGValue() const;
83 virtual void param_set_default();
84 void param_set_value(gdouble val);
85 void param_make_integer(bool yes = true);
86 void param_set_range(gdouble min, gdouble max);
87 void param_set_digits(unsigned digits);
88 void param_set_increments(double step, double page);
90 virtual Gtk::Widget * param_getWidget();
92 inline operator gdouble()
93 { return value; };
95 protected:
96 gdouble value;
97 gdouble min;
98 gdouble max;
99 bool integer;
100 gdouble defvalue;
101 Inkscape::UI::Widget::RegisteredScalar * rsu;
102 unsigned digits;
103 double inc_step;
104 double inc_page;
106 private:
107 ScalarParam(const ScalarParam&);
108 ScalarParam& operator=(const ScalarParam&);
109 };
111 } //namespace LivePathEffect
113 } //namespace Inkscape
115 #endif