gtk2_ardour/utils.h

   1 /*
   2     Copyright (C) 2002 Paul Davis
   3
   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.
   8
   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.
  13
  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.
  17
  18 */
  19
  20 #ifndef __ardour_gtk_utils_h__
  21 #define __ardour_gtk_utils_h__
  22
  23 #include <string>
  24 #include <cmath>
  25 #include <vector>
  26 #include <ardour/types.h>
  27 #include <libgnomecanvasmm/line.h>
  28 #include <gdkmm/types.h>
  29 #include <glibmm/ustring.h>
  30
  31 #include "canvas.h"
  32
  33 namespace Gtk {
  34         class Window;
  35         class ComboBoxText;
  36         class Paned;
  37 }
  38
  39 static inline double
  40 gain_to_slider_position (ARDOUR::gain_t g)
  41 {
  42         if (g == 0) return 0;
  43         return pow((6.0*log(g)/log(2.0)+192.0)/198.0, 8.0);
  44
  45 }
  46
  47 static inline ARDOUR::gain_t
  48 slider_position_to_gain (double pos)
  49 {
  50         /* XXX Marcus writes: this doesn't seem right to me. but i don't have a better answer ... */
  51         if (pos == 0.0) return 0;
  52         return pow (2.0,(sqrt(sqrt(sqrt(pos)))*198.0-192.0)/6.0);
  53 }
  54
  55 Glib::ustring fit_to_pixels (const Glib::ustring&, int pixel_width, Pango::FontDescription& font, int& actual_width, bool with_ellipses = false);
  56 int pixel_width (const Glib::ustring& str, Pango::FontDescription& font);
  57
  58 gint   just_hide_it (GdkEventAny*, Gtk::Window*);
  59 void   allow_keyboard_focus (bool);
  60
  61 unsigned char* xpm2rgb  (const char** xpm, uint32_t& w, uint32_t& h);
  62 unsigned char* xpm2rgba (const char** xpm, uint32_t& w, uint32_t& h);
  63
  64 ArdourCanvas::Points* get_canvas_points (std::string who, uint32_t npoints);
  65
  66 Pango::FontDescription* get_font_for_style (std::string widgetname);
  67
  68 uint32_t rgba_from_style (std::string, uint32_t, uint32_t, uint32_t, uint32_t, std::string = "fg", int = Gtk::STATE_NORMAL, bool = true);
  69
  70 Gdk::Color color_from_style (std::string widget_style_name, int state, std::string attr);
  71
  72 void decorate (Gtk::Window& w, Gdk::WMDecoration d);
  73
  74 bool canvas_item_visible (ArdourCanvas::Item* item);
  75
  76 void set_color (Gdk::Color&, int);
  77
  78 bool key_press_focus_accelerator_handler (Gtk::Window& window, GdkEventKey* ev);
  79 bool possibly_translate_keyval_to_make_legal_accelerator (uint32_t& keyval);
  80
  81 Glib::RefPtr<Gdk::Pixbuf> get_xpm (std::string);
  82 Glib::RefPtr<Gdk::Pixbuf> get_icon (const char*);
  83 static std::map<std::string, Glib::RefPtr<Gdk::Pixbuf> > xpm_map;
  84 const char* const *get_xpm_data (std::string path);
  85 std::string longest (std::vector<std::string>&);
  86 bool key_is_legal_for_numeric_entry (guint keyval);
  87 void reset_dpi ();
  88 void set_pango_fontsize ();
  89
  90 #endif /* __ardour_gtk_utils_h__ */