2 Copyright (C) 2006 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __gtkmm2ext_pixfader_h__
21 #define __gtkmm2ext_pixfader_h__
26 #include "gtkmm2ext/cairo_widget.h"
27 #include <gtkmm/adjustment.h>
30 #include "gtkmm2ext/visibility.h"
34 class LIBGTKMM2EXT_API PixFader : public CairoWidget
37 PixFader (Gtk::Adjustment& adjustment, int orientation, int span, int girth);
40 sigc::signal<void> StartGesture;
41 sigc::signal<void> StopGesture;
42 sigc::signal<void> OnExpose;
44 void set_default_value (float);
45 void set_text (const std::string&, bool centered = true, bool expose = true);
48 NoShowUnityLine = 0x1,
49 NoButtonForward = 0x2,
50 NoVerticalScroll = 0x4,
53 Tweaks tweaks() const { return _tweaks; }
54 void set_tweaks (Tweaks);
57 void on_size_request (GtkRequisition*);
58 void on_size_allocate (Gtk::Allocation& alloc);
60 void render (cairo_t *, cairo_rectangle_t*);
61 bool on_button_press_event (GdkEventButton*);
62 bool on_button_release_event (GdkEventButton*);
63 bool on_motion_notify_event (GdkEventMotion*);
64 bool on_scroll_event (GdkEventScroll* ev);
65 bool on_enter_notify_event (GdkEventCrossing* ev);
66 bool on_leave_notify_event (GdkEventCrossing* ev);
68 void on_state_changed (Gtk::StateType);
69 void on_style_changed (const Glib::RefPtr<Gtk::Style>&);
78 Glib::RefPtr<Pango::Layout> _layout;
81 Gtk::Adjustment& _adjustment;
86 int _min_span, _min_girth;
88 cairo_pattern_t* _pattern;
90 GdkWindow* _grab_window;
98 sigc::connection _parent_style_change;
99 Widget * _current_parent;
100 Gdk::Color get_parent_bg ();
102 void create_patterns();
103 void adjustment_changed ();
104 void set_adjustment_from_event (GdkEventButton *);
105 void update_unity_position ();
109 cairo_pattern_t* pattern;
119 FaderImage (cairo_pattern_t* p,
120 double afr, double afg, double afb,
121 double abr, double abg, double abb,
134 bool matches (double afr, double afg, double afb,
135 double abr, double abg, double abb,
148 static std::list<FaderImage*> _patterns;
149 static cairo_pattern_t* find_pattern (double afr, double afg, double afb,
150 double abr, double abg, double abb,
158 #endif /* __gtkmm2ext_pixfader_h__ */