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livetrax/gtk2_ardour/utils.h

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/*
Copyright (C) 2002 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#ifndef __ardour_gtk_utils_h__
#define __ardour_gtk_utils_h__
#include <string>
#include <cmath>
#include <ardour/types.h>
#include <libgnomecanvasmm/line.h>
#include <gdkmm/types.h>
#include "canvas.h"
namespace Gtk {
class Window;
class ComboBoxText;
class Paned;
}
static inline double
gain_to_slider_position (ARDOUR::gain_t g)
{
if (g == 0) return 0;
return pow((6.0*log(g)/log(2.0)+192.0)/198.0, 8.0);
}
static inline ARDOUR::gain_t
slider_position_to_gain (double pos)
{
/* XXX Marcus writes: this doesn't seem right to me. but i don't have a better answer ... */
if (pos == 0.0) return 0;
return pow (2.0,(sqrt(sqrt(sqrt(pos)))*198.0-192.0)/6.0);
}
std::string short_version (std::string, std::string::size_type target_length);
std::string fit_to_pixels (std::string, int pixel_width, std::string font);
int atoi (const std::string&);
double atof (const std::string&);
void strip_whitespace_edges (std::string& str);
void url_decode (std::string&);
gint just_hide_it (GdkEventAny*, Gtk::Window*);
void allow_keyboard_focus (bool);
unsigned char* xpm2rgb (const char** xpm, uint32_t& w, uint32_t& h);
unsigned char* xpm2rgba (const char** xpm, uint32_t& w, uint32_t& h);
ArdourCanvas::Points* get_canvas_points (std::string who, uint32_t npoints);
int channel_combo_get_channel_count (Gtk::ComboBoxText& combo);
Pango::FontDescription get_font_for_style (std::string widgetname);
gint pane_handler (GdkEventButton*, Gtk::Paned*);
uint32_t rgba_from_style (std::string style, uint32_t, uint32_t, uint32_t, uint32_t);
void decorate (Gtk::Window& w, Gdk::WMDecoration d);
bool canvas_item_visible (ArdourCanvas::Item* item);
#endif /* __ardour_gtk_utils_h__ */