libs/gtkmm2ext/gtkmm2ext/keyboard.h

   1 /*
   2     Copyright (C) 2001 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 __libgtkmm2ext_keyboard_h__
  21 #define __libgtkmm2ext_keyboard_h__
  22
  23 #include <map>
  24 #include <vector>
  25 #include <string>
  26
  27 #include <sigc++/signal.h>
  28 #include <gtk/gtk.h>
  29 #include <gtkmm/accelkey.h>
  30
  31 #include "pbd/stateful.h"
  32
  33 namespace Gtk {
  34         class Window;
  35 }
  36
  37 namespace Gtkmm2ext {
  38
  39 class Keyboard : public sigc::trackable, PBD::Stateful
  40 {
  41   public:
  42         Keyboard ();
  43         ~Keyboard ();
  44
  45         XMLNode& get_state (void);
  46         int set_state (const XMLNode&, int version);
  47
  48         virtual void setup_keybindings () = 0;
  49
  50         typedef std::vector<uint32_t> State;
  51         typedef uint32_t ModifierMask;
  52
  53         static uint32_t PrimaryModifier;
  54         static uint32_t SecondaryModifier;
  55         static uint32_t TertiaryModifier;
  56         static uint32_t Level4Modifier;
  57         static uint32_t CopyModifier;
  58         static uint32_t RangeSelectModifier;
  59
  60         static const char* primary_modifier_name ();
  61         static const char* secondary_modifier_name ();
  62         static const char* tertiary_modifier_name ();
  63         static const char* level4_modifier_name ();
  64         static const char* copy_modifier_name ();
  65         static const char* rangeselect_modifier_name ();
  66
  67         static void set_primary_modifier (uint32_t newval) {
  68                 set_modifier (newval, PrimaryModifier);
  69         }
  70         static void set_secondary_modifier (uint32_t newval) {
  71                 set_modifier (newval, SecondaryModifier);
  72         }
  73         static void set_tertiary_modifier (uint32_t newval) {
  74                 set_modifier (newval, TertiaryModifier);
  75         }
  76         static void set_level4_modifier (uint32_t newval) {
  77                 set_modifier (newval, Level4Modifier);
  78         }
  79         static void set_copy_modifier (uint32_t newval) {
  80                 set_modifier (newval, CopyModifier);
  81         }
  82         static void set_range_select_modifier (uint32_t newval) {
  83                 set_modifier (newval, RangeSelectModifier);
  84         }
  85
  86         bool key_is_down (uint32_t keyval);
  87
  88         static GdkModifierType RelevantModifierKeyMask;
  89
  90         static bool no_modifier_keys_pressed(GdkEventButton* ev) {
  91                 return (ev->state & RelevantModifierKeyMask) == 0;
  92         }
  93
  94         static bool no_modifier_keys_pressed(GdkEventKey* ev) {
  95                 return (ev->state & RelevantModifierKeyMask) == 0;
  96         }
  97
  98         bool leave_window (GdkEventCrossing *ev, Gtk::Window*);
  99         bool enter_window (GdkEventCrossing *ev, Gtk::Window*);
 100
 101         static bool modifier_state_contains (guint state, ModifierMask);
 102         static bool modifier_state_equals   (guint state, ModifierMask);
 103
 104         static bool no_modifiers_active (guint state);
 105
 106         static void set_snap_modifier (guint);
 107
 108         /** @return Modifier mask to temporarily toggle grid setting; with this modifier
 109          *  - magnetic or normal grid should become no grid and
 110          *  - no grid should become normal grid
 111          */
 112         static ModifierMask snap_modifier () { return ModifierMask (snap_mod); }
 113
 114         static guint edit_button() { return edit_but; }
 115         static void set_edit_button (guint);
 116         static guint edit_modifier() { return edit_mod; }
 117         static void set_edit_modifier(guint);
 118
 119         static guint delete_button() { return delete_but; }
 120         static void set_delete_button(guint);
 121         static guint delete_modifier() { return delete_mod; }
 122         static void set_delete_modifier(guint);
 123
 124         static guint insert_note_button() { return insert_note_but; }
 125         static void set_insert_note_button (guint);
 126         static guint insert_note_modifier() { return insert_note_mod; }
 127         static void set_insert_note_modifier(guint);
 128
 129         static bool is_edit_event (GdkEventButton*);
 130         static bool is_delete_event (GdkEventButton*);
 131         static bool is_insert_note_event (GdkEventButton*);
 132         static bool is_context_menu_event (GdkEventButton*);
 133         static bool is_button2_event (GdkEventButton*);
 134
 135         static Keyboard& the_keyboard() { return *_the_keyboard; }
 136
 137         static bool some_magic_widget_has_focus ();
 138         static void magic_widget_grab_focus ();
 139         static void magic_widget_drop_focus ();
 140
 141         static void keybindings_changed ();
 142         static void save_keybindings ();
 143         static bool load_keybindings (std::string path);
 144         static void set_can_save_keybindings (bool yn);
 145         static std::string current_binding_name () { return _current_binding_name; }
 146         static std::map<std::string,std::string> binding_files;
 147
 148         struct AccelKeyLess {
 149             bool operator() (const Gtk::AccelKey a, const Gtk::AccelKey b) const {
 150                     if (a.get_key() != b.get_key()) {
 151                             return a.get_key() < b.get_key();
 152                     } else {
 153                             return a.get_mod() < b.get_mod();
 154                     }
 155             }
 156         };
 157
 158   protected:
 159         static Keyboard* _the_keyboard;
 160
 161         guint           snooper_id;
 162         State           state;
 163
 164         static guint     edit_but;
 165         static guint     edit_mod;
 166         static guint     delete_but;
 167         static guint     delete_mod;
 168         static guint     insert_note_but;
 169         static guint     insert_note_mod;
 170         static guint     snap_mod;
 171         static guint     button2_modifiers;
 172         static Gtk::Window* current_window;
 173         static std::string user_keybindings_path;
 174         static bool can_save_keybindings;
 175         static bool bindings_changed_after_save_became_legal;
 176         static std::string _current_binding_name;
 177
 178         typedef std::pair<std::string,std::string> two_strings;
 179
 180         static std::map<Gtk::AccelKey,two_strings,AccelKeyLess> release_keys;
 181
 182         static gint _snooper (GtkWidget*, GdkEventKey*, gpointer);
 183         gint snooper (GtkWidget*, GdkEventKey*);
 184
 185         static void set_modifier (uint32_t newval, uint32_t& variable);
 186
 187         static bool _some_magic_widget_has_focus;
 188 };
 189
 190 } /* namespace */
 191
 192 #endif /* __libgtkmm2ext_keyboard_h__ */