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112 lines
3.4 KiB
C++
112 lines
3.4 KiB
C++
/*
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Copyright (C) 2003 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __gtkmm2ext_fastmeter_h__
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#define __gtkmm2ext_fastmeter_h__
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#include <map>
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#include <boost/tuple/tuple.hpp>
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#include <boost/tuple/tuple_comparison.hpp>
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#include <cairomm/pattern.h>
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#include <gtkmm/drawingarea.h>
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#include <gdkmm/pixbuf.h>
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namespace Gtkmm2ext {
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class FastMeter : public Gtk::DrawingArea {
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public:
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enum Orientation {
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Horizontal,
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Vertical
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};
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FastMeter (long hold_cnt, unsigned long width, Orientation, int len=0, int clrb0=0x00ff00, int clr1=0xffff00, int clr2=0xffaa00, int clr3=0xff0000);
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virtual ~FastMeter ();
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void set (float level);
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void clear ();
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float get_level() { return current_level; }
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float get_user_level() { return current_user_level; }
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float get_peak() { return current_peak; }
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long hold_count() { return hold_cnt; }
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void set_hold_count (long);
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protected:
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bool on_expose_event (GdkEventExpose*);
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void on_size_request (GtkRequisition*);
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void on_size_allocate (Gtk::Allocation&);
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private:
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Cairo::RefPtr<Cairo::Pattern> fgpattern;
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Cairo::RefPtr<Cairo::Pattern> bgpattern;
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gint pixheight;
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gint pixwidth;
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int _clr0, _clr1, _clr2, _clr3;
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int _bgc0, _bgc1, _bgc2, _bgc3;
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Orientation orientation;
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GdkRectangle pixrect;
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GdkRectangle last_peak_rect;
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gint request_width;
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gint request_height;
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unsigned long hold_cnt;
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unsigned long hold_state;
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float current_level;
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float current_peak;
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float current_user_level;
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bool resized;
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bool vertical_expose (GdkEventExpose*);
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bool horizontal_expose (GdkEventExpose*);
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void queue_vertical_redraw (const Glib::RefPtr<Gdk::Window>&, float);
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void queue_horizontal_redraw (const Glib::RefPtr<Gdk::Window>&, float);
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static Cairo::RefPtr<Cairo::Pattern> generate_meter_pattern (
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int w, int h, int clr0, int clr1, int clr2, int clr3);
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static Cairo::RefPtr<Cairo::Pattern> request_vertical_meter (
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int w, int h, int clr0, int clr1, int clr2, int clr3);
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static Cairo::RefPtr<Cairo::Pattern> request_horizontal_meter (
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int w, int h, int clr0, int clr1, int clr2, int clr3);
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struct PatternMapKey {
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PatternMapKey (int w, int h, int c0, int c1, int c2, int c3)
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: dim(w, h)
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, cols(c0, c1, c2, c3)
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{}
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inline bool operator<(const PatternMapKey& rhs) const {
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return (dim < rhs.dim) || (dim == rhs.dim && cols < rhs.cols);
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}
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boost::tuple<int, int> dim; // width, height
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boost::tuple<int, int, int, int> cols; // c0, c1, c2, c3
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};
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typedef std::map<PatternMapKey, Cairo::RefPtr<Cairo::Pattern> > PatternMap;
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static PatternMap v_pattern_cache;
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static PatternMap h_pattern_cache;
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static int min_pattern_metric_size; // min dimension for axis that displays the meter level
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static int max_pattern_metric_size; // max dimension for axis that displays the meter level
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};
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} /* namespace */
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#endif /* __gtkmm2ext_fastmeter_h__ */
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