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);
39 static void flush_pattern_cache();
41 sigc::signal<void> StartGesture;
42 sigc::signal<void> StopGesture;
43 sigc::signal<void> OnExpose;
45 void set_default_value (float);
46 void set_text (const std::string&, bool centered = true, bool expose = true);
49 NoShowUnityLine = 0x1,
50 NoButtonForward = 0x2,
51 NoVerticalScroll = 0x4,
54 Tweaks tweaks() const { return _tweaks; }
55 void set_tweaks (Tweaks);
58 void on_size_request (GtkRequisition*);
59 void on_size_allocate (Gtk::Allocation& alloc);
61 void render (Cairo::RefPtr<Cairo::Context> const&, cairo_rectangle_t*);
62 bool on_grab_broken_event (GdkEventGrabBroken*);
63 bool on_button_press_event (GdkEventButton*);
64 bool on_button_release_event (GdkEventButton*);
65 bool on_motion_notify_event (GdkEventMotion*);
66 bool on_scroll_event (GdkEventScroll* ev);
67 bool on_enter_notify_event (GdkEventCrossing* ev);
68 bool on_leave_notify_event (GdkEventCrossing* ev);
70 void on_state_changed (Gtk::StateType);
71 void on_style_changed (const Glib::RefPtr<Gtk::Style>&);
80 Glib::RefPtr<Pango::Layout> _layout;
83 Gtk::Adjustment& _adjustment;
88 int _min_span, _min_girth;
90 cairo_pattern_t* _pattern;
92 GdkWindow* _grab_window;
100 sigc::connection _parent_style_change;
101 Widget * _current_parent;
102 Gdk::Color get_parent_bg ();
104 void create_patterns();
105 void adjustment_changed ();
106 void set_adjustment_from_event (GdkEventButton *);
107 void update_unity_position ();
111 cairo_pattern_t* pattern;
121 FaderImage (cairo_pattern_t* p,
122 double afr, double afg, double afb,
123 double abr, double abg, double abb,
136 bool matches (double afr, double afg, double afb,
137 double abr, double abg, double abb,
150 static std::list<FaderImage*> _patterns;
151 static cairo_pattern_t* find_pattern (double afr, double afg, double afb,
152 double abr, double abg, double abb,
160 #endif /* __gtkmm2ext_pixfader_h__ */