2 Copyright (C) 2003 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_fastmeter_h__
21 #define __gtkmm2ext_fastmeter_h__
24 #include <boost/tuple/tuple.hpp>
25 #include <boost/tuple/tuple_comparison.hpp>
26 #include <cairomm/pattern.h>
27 #include <gtkmm/drawingarea.h>
28 #include <gdkmm/pixbuf.h>
32 class FastMeter : public Gtk::DrawingArea {
39 FastMeter (long hold_cnt, unsigned long width, Orientation, int len=0,
40 int clr0=0x008800ff, int clr1=0x008800ff,
41 int clr2=0x00ff00ff, int clr3=0x00ff00ff,
42 int clr4=0xffaa00ff, int clr5=0xffaa00ff,
43 int clr6=0xffff00ff, int clr7=0xffff00ff,
44 int clr8=0xff0000ff, int clr9=0xff0000ff,
45 int bgc0=0x333333ff, int bgc1=0x444444ff,
46 float stp0 = 55.0, // log_meter(-18);
47 float stp1 = 77.5, // log_meter(-9);
48 float stp2 = 92.5, // log_meter(-3); // 95.0, // log_meter(-2);
51 virtual ~FastMeter ();
53 void set (float level);
56 float get_level() { return current_level; }
57 float get_user_level() { return current_user_level; }
58 float get_peak() { return current_peak; }
60 long hold_count() { return hold_cnt; }
61 void set_hold_count (long);
64 bool on_expose_event (GdkEventExpose*);
65 void on_size_request (GtkRequisition*);
66 void on_size_allocate (Gtk::Allocation&);
70 Cairo::RefPtr<Cairo::Pattern> fgpattern;
71 Cairo::RefPtr<Cairo::Pattern> bgpattern;
79 Orientation orientation;
81 GdkRectangle last_peak_rect;
84 unsigned long hold_cnt;
85 unsigned long hold_state;
88 float current_user_level;
91 bool vertical_expose (GdkEventExpose*);
92 void queue_vertical_redraw (const Glib::RefPtr<Gdk::Window>&, float);
94 static Cairo::RefPtr<Cairo::Pattern> generate_meter_pattern (
95 int w, int h, int *clr, float *stp);
96 static Cairo::RefPtr<Cairo::Pattern> request_vertical_meter (
97 int w, int h, int *clr, float *stp);
99 static Cairo::RefPtr<Cairo::Pattern> generate_meter_background (
100 int w, int h, int *bgc);
101 static Cairo::RefPtr<Cairo::Pattern> request_vertical_background (
102 int w, int h, int *bgc);
104 struct Pattern10MapKey {
107 float stp0, float stp1, float stp2, float stp3,
108 int c0, int c1, int c2, int c3,
109 int c4, int c5, int c6, int c7,
113 , stp(stp0, stp1, stp2, stp3)
114 , cols(c0, c1, c2, c3, c4, c5, c6, c7, c8, c9)
116 inline bool operator<(const Pattern10MapKey& rhs) const {
117 return (dim < rhs.dim)
118 || (dim == rhs.dim && stp < rhs.stp)
119 || (dim == rhs.dim && stp == rhs.stp && cols < rhs.cols);
121 boost::tuple<int, int> dim;
122 boost::tuple<float, float, float, float> stp;
123 boost::tuple<int, int, int, int, int, int, int, int, int, int> cols;
125 typedef std::map<Pattern10MapKey, Cairo::RefPtr<Cairo::Pattern> > Pattern10Map;
127 struct PatternBgMapKey {
128 PatternBgMapKey (int w, int h, int c0, int c1)
132 inline bool operator<(const PatternBgMapKey& rhs) const {
133 return (dim < rhs.dim) || (dim == rhs.dim && cols < rhs.cols);
135 boost::tuple<int, int> dim;
136 boost::tuple<int, int> cols;
138 typedef std::map<PatternBgMapKey, Cairo::RefPtr<Cairo::Pattern> > PatternBgMap;
140 static Pattern10Map vm_pattern_cache;
141 static PatternBgMap vb_pattern_cache;
142 static int min_pattern_metric_size; // min dimension for axis that displays the meter level
143 static int max_pattern_metric_size; // max dimension for axis that displays the meter level
149 #endif /* __gtkmm2ext_fastmeter_h__ */