Optimize automation-event process splitting
[ardour.git] / gtk2_ardour / keyboard.cc
index 6094e3502e1d9547f62049daf10cde7d871b6ee8..501c81ee6ddaa347926f1299c00208ba171c54a5 100644 (file)
 
 */
 
-#include <vector>
-#include "ardour/ardour.h"
-
-#include "ardour_ui.h"
-
-#include <algorithm>
-#include <fstream>
-#include <iostream>
-
-#include <ctype.h>
-
-#include <gtkmm/accelmap.h>
-
-#include <gdk/gdkkeysyms.h>
+#include "pbd/convert.h"
 #include "pbd/error.h"
 #include "pbd/file_utils.h"
+#include "pbd/basename.h"
 
 #include "ardour/filesystem_paths.h"
+#include "ardour/revision.h"
 
+#include "ardour_ui.h"
+#include "public_editor.h"
 #include "keyboard.h"
-#include "gui_thread.h"
 #include "opts.h"
-#include "actions.h"
+#include "ui_config.h"
 
-#include "i18n.h"
+#include "pbd/i18n.h"
 
+using namespace std;
+using namespace Gtk;
 using namespace PBD;
 using namespace ARDOUR;
-using namespace Gtk;
-using namespace std;
+using Gtkmm2ext::Keyboard;
 
-#define KBD_DEBUG 1
-bool debug_keyboard = false;
-
-guint Keyboard::edit_but = 3;
-guint Keyboard::edit_mod = GDK_CONTROL_MASK;
-guint Keyboard::delete_but = 3;
-guint Keyboard::delete_mod = GDK_SHIFT_MASK;
-guint Keyboard::snap_mod = GDK_MOD3_MASK;
-
-#ifdef GTKOSX
-guint Keyboard::PrimaryModifier = GDK_META_MASK;   // Command
-guint Keyboard::SecondaryModifier = GDK_MOD1_MASK; // Alt/Option
-guint Keyboard::TertiaryModifier = GDK_SHIFT_MASK; // Shift
-guint Keyboard::Level4Modifier = GDK_CONTROL_MASK; // Control
-guint Keyboard::CopyModifier = GDK_MOD1_MASK;      // Alt/Option
-guint Keyboard::RangeSelectModifier = GDK_SHIFT_MASK;
-guint Keyboard::button2_modifiers = Keyboard::SecondaryModifier|Keyboard::Level4Modifier;
+#ifdef __APPLE__
+guint ArdourKeyboard::constraint_mod = Keyboard::PrimaryModifier;
 #else
-guint Keyboard::PrimaryModifier = GDK_CONTROL_MASK; // Control
-guint Keyboard::SecondaryModifier = GDK_MOD1_MASK;  // Alt/Option
-guint Keyboard::TertiaryModifier = GDK_SHIFT_MASK;  // Shift
-guint Keyboard::Level4Modifier = GDK_MOD4_MASK;     // Mod4/Windows
-guint Keyboard::CopyModifier = GDK_CONTROL_MASK;
-guint Keyboard::RangeSelectModifier = GDK_SHIFT_MASK;
-guint Keyboard::button2_modifiers = 0; /* not used */
-#endif
-
-
-Keyboard*    Keyboard::_the_keyboard = 0;
-Gtk::Window* Keyboard::current_window = 0;
-bool         Keyboard::_some_magic_widget_has_focus = false;
-
-std::string Keyboard::user_keybindings_path;
-bool Keyboard::can_save_keybindings = false;
-bool Keyboard::bindings_changed_after_save_became_legal = false;
-map<string,string> Keyboard::binding_files;
-string Keyboard::_current_binding_name = _("Unknown");
-map<AccelKey,pair<string,string>,Keyboard::AccelKeyLess> Keyboard::release_keys;
-
-/* set this to initially contain the modifiers we care about, then track changes in ::set_edit_modifier() etc. */
-
-GdkModifierType Keyboard::RelevantModifierKeyMask;
-
-void
-Keyboard::magic_widget_grab_focus ()
-{
-       _some_magic_widget_has_focus = true;
-}
-
-void
-Keyboard::magic_widget_drop_focus ()
-{
-       _some_magic_widget_has_focus = false;
-}
-
-bool
-Keyboard::some_magic_widget_has_focus ()
-{
-       return _some_magic_widget_has_focus;
-}
-
-Keyboard::Keyboard ()
-{
-       if (_the_keyboard == 0) {
-               _the_keyboard = this;
-       }
-
-       RelevantModifierKeyMask = (GdkModifierType) gtk_accelerator_get_default_mod_mask ();
-
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | PrimaryModifier);
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | SecondaryModifier);
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | TertiaryModifier);
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | Level4Modifier);
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | CopyModifier);
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | RangeSelectModifier);
-
-       gtk_accelerator_set_default_mod_mask (RelevantModifierKeyMask);
-
-       snooper_id = gtk_key_snooper_install (_snooper, (gpointer) this);
-
-       XMLNode* node = ARDOUR_UI::instance()->keyboard_settings();
-       set_state (*node, Stateful::loading_state_version);
-}
-
-Keyboard::~Keyboard ()
-{
-       gtk_key_snooper_remove (snooper_id);
-}
-
-XMLNode&
-Keyboard::get_state (void)
-{
-       XMLNode* node = new XMLNode ("Keyboard");
-       char buf[32];
-
-       snprintf (buf, sizeof (buf), "%d", edit_but);
-       node->add_property ("edit-button", buf);
-       snprintf (buf, sizeof (buf), "%d", edit_mod);
-       node->add_property ("edit-modifier", buf);
-       snprintf (buf, sizeof (buf), "%d", delete_but);
-       node->add_property ("delete-button", buf);
-       snprintf (buf, sizeof (buf), "%d", delete_mod);
-       node->add_property ("delete-modifier", buf);
-       snprintf (buf, sizeof (buf), "%d", snap_mod);
-       node->add_property ("snap-modifier", buf);
-
-       return *node;
-}
-
-int
-Keyboard::set_state (const XMLNode& node, int /*version*/)
-{
-       const XMLProperty* prop;
-
-       if ((prop = node.property ("edit-button")) != 0) {
-               sscanf (prop->value().c_str(), "%d", &edit_but);
-       }
-
-       if ((prop = node.property ("edit-modifier")) != 0) {
-               sscanf (prop->value().c_str(), "%d", &edit_mod);
-       }
-
-       if ((prop = node.property ("delete-button")) != 0) {
-               sscanf (prop->value().c_str(), "%d", &delete_but);
-       }
-
-       if ((prop = node.property ("delete-modifier")) != 0) {
-               sscanf (prop->value().c_str(), "%d", &delete_mod);
-       }
-
-       if ((prop = node.property ("snap-modifier")) != 0) {
-               sscanf (prop->value().c_str(), "%d", &snap_mod);
-       }
-
-       return 0;
-}
-
-gint
-Keyboard::_snooper (GtkWidget *widget, GdkEventKey *event, gpointer data)
-{
-       return ((Keyboard *) data)->snooper (widget, event);
-}
-
-gint
-Keyboard::snooper (GtkWidget *widget, GdkEventKey *event)
-{
-       uint32_t keyval;
-       bool ret = false;
-
-#if 1
-       cerr << "snoop widget " << widget << " key " << event->keyval << " type: " << event->type
-            << " state " << std::hex << event->state << std::dec
-            << endl;
+guint ArdourKeyboard::constraint_mod = Keyboard::TertiaryModifier;
 #endif
 
-#if KBD_DEBUG
-       if (debug_keyboard) {
-               cerr << "snoop widget " << widget << " key " << event->keyval << " type: " << event->type
-                    << endl;
-       }
-#endif
-
-       if (event->keyval == GDK_Shift_R) {
-               keyval = GDK_Shift_L;
-
-       } else  if (event->keyval == GDK_Control_R) {
-               keyval = GDK_Control_L;
-
-       } else {
-               keyval = event->keyval;
-       }
-
-       if (event->type == GDK_KEY_PRESS) {
-
-               if (find (state.begin(), state.end(), keyval) == state.end()) {
-                       state.push_back (keyval);
-                       sort (state.begin(), state.end());
-
-               } else {
-
-                       /* key is already down. if its also used for release,
-                          prevent auto-repeat events.
-                       */
-
-                       for (map<AccelKey,two_strings,AccelKeyLess>::iterator k = release_keys.begin(); k != release_keys.end(); ++k) {
-
-                               const AccelKey& ak (k->first);
-
-                               if (keyval == ak.get_key() && (Gdk::ModifierType)((event->state & Keyboard::RelevantModifierKeyMask) | Gdk::RELEASE_MASK) == ak.get_mod()) {
-                                       cerr << "Suppress auto repeat\n";
-                                       ret = true;
-                                       break;
-                               }
-                       }
-               }
-
-       } else if (event->type == GDK_KEY_RELEASE) {
+/* TrimDrag::start_grab() */
+guint ArdourKeyboard::trim_contents_mod = Keyboard::PrimaryModifier;
 
-               State::iterator i;
+/* TrimDrag::motion() */
+guint ArdourKeyboard::trim_overlap_mod = Keyboard::TertiaryModifier;
 
-               if ((i = find (state.begin(), state.end(), keyval)) != state.end()) {
-                       state.erase (i);
-                       sort (state.begin(), state.end());
-               }
+/* TrimDrag::start_grab() */
+guint ArdourKeyboard::trim_anchored_mod = Keyboard::PrimaryModifier|Keyboard::TertiaryModifier;
 
-               for (map<AccelKey,two_strings,AccelKeyLess>::iterator k = release_keys.begin(); k != release_keys.end(); ++k) {
+/* ControlPointDrag::motion() && LineDrag::motion()*/
+guint ArdourKeyboard::fine_adjust_mod = Keyboard::PrimaryModifier|Keyboard::SecondaryModifier; // XXX better just 2ndary
 
-                       const AccelKey& ak (k->first);
-                       two_strings ts (k->second);
+/* ControlPointDrag::start_grab() && MarkerDrag::motion() */
+guint ArdourKeyboard::push_points_mod = Keyboard::PrimaryModifier|Keyboard::Level4Modifier;
 
-                       if (keyval == ak.get_key() && (Gdk::ModifierType)((event->state & Keyboard::RelevantModifierKeyMask) | Gdk::RELEASE_MASK) == ak.get_mod()) {
-                               Glib::RefPtr<Gtk::Action> act = ActionManager::get_action (ts.first.c_str(), ts.second.c_str());
-                               if (act) {
-                                       act->activate();
-                                       cerr << "use repeat, suppress other\n";
-                                       ret = true;
-                               }
-                               break;
-                       }
-               }
-       }
-
-       /* Special keys that we want to handle in
-          any dialog, no matter whether it uses
-          the regular set of accelerators or not
-       */
-
-       if (event->type == GDK_KEY_RELEASE && modifier_state_equals (event->state, PrimaryModifier)) {
-               switch (event->keyval) {
-               case GDK_w:
-                       if (current_window) {
-                               current_window->hide ();
-                               current_window = 0;
-                               ret = true;
-                       }
-                       break;
-               }
-       }
-
-       return ret;
-}
+/* NoteResizeDrag::start_grab() */
+guint ArdourKeyboard::note_size_relative_mod = Keyboard::TertiaryModifier; // XXX better: 2ndary
 
-bool
-Keyboard::key_is_down (uint32_t keyval)
-{
-       return find (state.begin(), state.end(), keyval) != state.end();
-}
-
-bool
-Keyboard::enter_window (GdkEventCrossing *, Gtk::Window* win)
+ArdourKeyboard::ArdourKeyboard (ARDOUR_UI& ardour_ui) : ui (ardour_ui)
 {
-       current_window = win;
-       return false;
-}
-
-bool
-Keyboard::leave_window (GdkEventCrossing *ev, Gtk::Window* /*win*/)
-{
-       if (ev) {
-               switch (ev->detail) {
-               case GDK_NOTIFY_INFERIOR:
-                       if (debug_keyboard) {
-                               cerr << "INFERIOR crossing ... out\n";
-                       }
-                       break;
-
-               case GDK_NOTIFY_VIRTUAL:
-                       if (debug_keyboard) {
-                               cerr << "VIRTUAL crossing ... out\n";
-                       }
-                       /* fallthru */
-
-               default:
-                       if (debug_keyboard) {
-                               cerr << "REAL CROSSING ... out\n";
-                               cerr << "clearing current target\n";
-                       }
-                       state.clear ();
-                       current_window = 0;
-               }
-       } else {
-               current_window = 0;
-       }
-
-       return false;
-}
-
-void
-Keyboard::set_edit_button (guint but)
-{
-       edit_but = but;
-}
-
-void
-Keyboard::set_edit_modifier (guint mod)
-{
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~edit_mod);
-       edit_mod = mod;
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | edit_mod);
+       Keyboard::RelevantModifierKeysChanged.connect (sigc::mem_fun (*this, &ArdourKeyboard::reset_relevant_modifier_key_mask));
 }
 
 void
-Keyboard::set_delete_button (guint but)
+ArdourKeyboard::find_bindings_files (map<string,string>& files)
 {
-       delete_but = but;
-}
+       vector<std::string> found;
+       Searchpath spath = ardour_config_search_path();
 
-void
-Keyboard::set_delete_modifier (guint mod)
-{
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~delete_mod);
-       delete_mod = mod;
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | delete_mod);
-}
+       find_files_matching_pattern (found, spath, string_compose ("*%1", Keyboard::binding_filename_suffix));
 
-void
-Keyboard::set_modifier (uint32_t newval, uint32_t& var)
-{
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~var);
-       var = newval;
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | var);
-}
-
-void
-Keyboard::set_snap_modifier (guint mod)
-{
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~snap_mod);
-       snap_mod = mod;
-       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | snap_mod);
-}
-
-bool
-Keyboard::is_edit_event (GdkEventButton *ev)
-{
-       return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
-               (ev->button == Keyboard::edit_button()) &&
-               ((ev->state & RelevantModifierKeyMask) == Keyboard::edit_modifier());
-}
-
-bool
-Keyboard::is_button2_event (GdkEventButton* ev)
-{
-#ifdef GTKOSX
-       return (ev->button == 2) ||
-               ((ev->button == 1) &&
-                ((ev->state & Keyboard::button2_modifiers) == Keyboard::button2_modifiers));
-#else
-       return ev->button == 2;
-#endif
-}
-
-bool
-Keyboard::is_delete_event (GdkEventButton *ev)
-{
-       return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
-               (ev->button == Keyboard::delete_button()) &&
-               ((ev->state & RelevantModifierKeyMask) == Keyboard::delete_modifier());
-}
-
-bool
-Keyboard::is_context_menu_event (GdkEventButton *ev)
-{
-       return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
-               (ev->button == 3) &&
-               ((ev->state & RelevantModifierKeyMask) == 0);
-}
-
-bool
-Keyboard::no_modifiers_active (guint state)
-{
-       return (state & RelevantModifierKeyMask) == 0;
-}
-
-bool
-Keyboard::modifier_state_contains (guint state, ModifierMask mask)
-{
-       return (state & mask) == (guint) mask;
-}
-
-bool
-Keyboard::modifier_state_equals (guint state, ModifierMask mask)
-{
-       return (state & RelevantModifierKeyMask) == (guint) mask;
-}
-
-Selection::Operation
-Keyboard::selection_type (guint state)
-{
-       /* note that there is no modifier for "Add" */
-
-       if (modifier_state_equals (state, RangeSelectModifier)) {
-               return Selection::Extend;
-       } else if (modifier_state_equals (state, PrimaryModifier)) {
-               return Selection::Toggle;
-       } else {
-               return Selection::Set;
+       if (found.empty()) {
+               return;
        }
-}
-
 
-static void
-accel_map_changed (GtkAccelMap* /*map*/,
-                  gchar* /*path*/,
-                  guint /*key*/,
-                  GdkModifierType /*mod*/,
-                  gpointer /*arg*/)
-{
-       Keyboard::keybindings_changed ();
-}
-
-void
-Keyboard::keybindings_changed ()
-{
-       if (Keyboard::can_save_keybindings) {
-               Keyboard::bindings_changed_after_save_became_legal = true;
-       }
-
-       Keyboard::save_keybindings ();
-}
-
-void
-Keyboard::set_can_save_keybindings (bool yn)
-{
-       can_save_keybindings = yn;
-}
-
-void
-Keyboard::save_keybindings ()
-{
-       if (can_save_keybindings && bindings_changed_after_save_became_legal) {
-               Gtk::AccelMap::save (user_keybindings_path);
+       for (vector<std::string>::iterator x = found.begin(); x != found.end(); ++x) {
+               std::string path(*x);
+               pair<string,string> namepath;
+               namepath.second = path;
+               namepath.first = PBD::basename_nosuffix (path);
+               files.insert (namepath);
        }
 }
 
 void
-Keyboard::setup_keybindings ()
+ArdourKeyboard::setup_keybindings ()
 {
-       using namespace ARDOUR_COMMAND_LINE;
-       std::string default_bindings = "mnemonic-us.bindings";
+       string keybindings_path = ARDOUR_COMMAND_LINE::keybindings_path;
+       string default_bindings = string_compose ("%1%2", UIConfiguration::instance().get_default_bindings(), Keyboard::binding_filename_suffix);
        vector<string> strs;
 
        binding_files.clear ();
 
-       ARDOUR::find_bindings_files (binding_files);
+       find_bindings_files (binding_files);
 
        /* set up the per-user bindings path */
 
-       strs.push_back (Glib::get_home_dir());
-       strs.push_back (".ardour3");
-       strs.push_back ("ardour.bindings");
+       string lowercase_program_name = downcase (string(PROGRAM_NAME));
+
+       /* extract and append minor vesion */
+       std::string rev (revision);
+       std::size_t pos = rev.find_first_of("-");
+       if (pos != string::npos && pos > 0) {
+               lowercase_program_name += "-";
+               lowercase_program_name += rev.substr (0, pos);
+       }
 
-       user_keybindings_path = Glib::build_filename (strs);
+       user_keybindings_path = Glib::build_filename (user_config_directory(), lowercase_program_name + binding_filename_suffix);
 
        if (Glib::file_test (user_keybindings_path, Glib::FILE_TEST_EXISTS)) {
                std::pair<string,string> newpair;
@@ -508,11 +121,10 @@ Keyboard::setup_keybindings ()
                binding_files.insert (newpair);
        }
 
-       /* check to see if they gave a style name ("SAE", "ergonomic") or
-          an actual filename (*.bindings)
+       /* check to see if they gave a style name ("ergonomic") or an actual filename (*.bindings)
        */
 
-       if (!keybindings_path.empty() && keybindings_path.find (".bindings") == string::npos) {
+       if (!keybindings_path.empty() && keybindings_path.find (binding_filename_suffix) == string::npos) {
 
                // just a style name - allow user to
                // specify the layout type.
@@ -533,7 +145,7 @@ Keyboard::setup_keybindings ()
                        keybindings_path += "-us";
                }
 
-               keybindings_path += ".bindings";
+               keybindings_path += binding_filename_suffix;
        }
 
        if (keybindings_path.empty()) {
@@ -561,14 +173,12 @@ Keyboard::setup_keybindings ()
                if (!Glib::path_is_absolute (keybindings_path)) {
 
                        /* not absolute - look in the usual places */
-                       sys::path keybindings_file;
-
-                       SearchPath spath = ardour_search_path() + user_config_directory() + system_config_search_path();
+                       std::string keybindings_file;
 
-                       if ( ! find_file_in_search_path (spath, keybindings_path, keybindings_file)) {
+                       if (!find_file (ardour_config_search_path(), keybindings_path, keybindings_file)) {
 
                                if (keybindings_path == default_bindings) {
-                                       error << _("Default keybindings not found - Ardour will be hard to use!") << endmsg;
+                                       error << string_compose (_("Default keybindings not found - %1 will be hard to use!"), PROGRAM_NAME) << endmsg;
                                        return;
                                } else {
                                        warning << string_compose (_("Key bindings file \"%1\" not found. Default bindings used instead"),
@@ -581,7 +191,7 @@ Keyboard::setup_keybindings ()
 
                                /* use it */
 
-                               keybindings_path = keybindings_file.to_string();
+                               keybindings_path = keybindings_file;
                                break;
 
                        }
@@ -592,12 +202,9 @@ Keyboard::setup_keybindings ()
 
                        if (!Glib::file_test (keybindings_path, Glib::FILE_TEST_EXISTS)) {
                                if (keybindings_path == default_bindings) {
-                                       error << _("Default keybindings not found - Ardour will be hard to use!") << endmsg;
+                                       error << string_compose (_("Default keybindings not found - %1 will be hard to use!"), PROGRAM_NAME) << endmsg;
                                        return;
                                } else {
-                                       warning << string_compose (_("Key bindings file \"%1\" not found. Default bindings used instead"),
-                                                                  keybindings_path)
-                                               << endmsg;
                                        keybindings_path = default_bindings;
                                }
 
@@ -609,75 +216,155 @@ Keyboard::setup_keybindings ()
 
        load_keybindings (keybindings_path);
 
-       /* catch changes */
+       /* catch changes made via some GTK mechanism */
 
-       GtkAccelMap* accelmap = gtk_accel_map_get();
-       g_signal_connect (accelmap, "changed", (GCallback) accel_map_changed, 0);
+       // GtkAccelMap* accelmap = gtk_accel_map_get();
+       // g_signal_connect (accelmap, "changed", (GCallback) accel_map_changed, this);
 }
 
-bool
-Keyboard::load_keybindings (string path)
+XMLNode&
+ArdourKeyboard::get_state (void)
 {
-       try {
-               info << "Loading bindings from " << path << endl;
+       XMLNode* node = &Keyboard::get_state ();
 
-               Gtk::AccelMap::load (path);
+       node->set_property ("constraint-modifier", constraint_mod);
+       node->set_property ("trim-contents-modifier", trim_contents_mod);
+       node->set_property ("trim-overlap-modifier", trim_overlap_mod);
+       node->set_property ("trim-anchored-modifier", trim_anchored_mod);
+       node->set_property ("fine-adjust-modifier", fine_adjust_mod);
+       node->set_property ("push-points-modifier", push_points_mod);
+       node->set_property ("note-size-relative-modifier", note_size_relative_mod);
 
-               _current_binding_name = _("Unknown");
+       return *node;
+}
 
-               for (map<string,string>::iterator x = binding_files.begin(); x != binding_files.end(); ++x) {
-                       if (path == x->second) {
-                               _current_binding_name = x->first;
-                               break;
-                       }
-               }
+int
+ArdourKeyboard::set_state (const XMLNode& node, int version)
+{
+       node.get_property ("constraint-modifier", constraint_mod);
+       node.get_property ("trim-contents-modifier", trim_contents_mod);
+       node.get_property ("trim-overlap-modifier", trim_overlap_mod);
+       node.get_property ("trim-anchored-modifier", trim_anchored_mod);
+       node.get_property ("fine-adjust-modifier", fine_adjust_mod);
+       node.get_property ("push-points-modifier", push_points_mod);
+       node.get_property ("note-size-relative-modifier", note_size_relative_mod);
 
+       return Keyboard::set_state (node, version);
+}
 
-       } catch (...) {
-               error << string_compose (_("Ardour key bindings file not found at \"%1\" or contains errors."), path)
-                     << endmsg;
-               return false;
-       }
+void
+ArdourKeyboard::reset_relevant_modifier_key_mask ()
+{
+       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | constraint_mod);
+       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | trim_contents_mod);
+       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | trim_overlap_mod);
+       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | trim_anchored_mod);
+       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | fine_adjust_mod);
+       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | push_points_mod);
+       RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | note_size_relative_mod);
+}
 
-       /* now find all release-driven bindings */
+/* Snap and snap delta modifiers may contain each other, so we use the
+ * following two methods to sort that out:
+ */
+bool
+ArdourKeyboard::indicates_snap (guint state)
+{
+       const bool contains_s = Keyboard::modifier_state_contains (state, Keyboard::snap_modifier ());
+       const bool contains_d = Keyboard::modifier_state_contains (state, Keyboard::snap_delta_modifier ());
+       const bool s_contains_d = Keyboard::modifier_state_contains (Keyboard::snap_modifier (), Keyboard::snap_delta_modifier ());
 
-       vector<string> groups;
-       vector<string> names;
-       vector<AccelKey> bindings;
+       return  (contains_s && ((contains_d && s_contains_d) || !contains_d));
+}
 
-       ActionManager::get_all_actions (groups, names, bindings);
+bool
+ArdourKeyboard::indicates_snap_delta (guint state)
+{
+       const bool contains_d = Keyboard::modifier_state_contains (state, Keyboard::snap_delta_modifier ());
+       const bool contains_s = Keyboard::modifier_state_contains (state, Keyboard::snap_modifier ());
+       const bool d_contains_s = Keyboard::modifier_state_contains (Keyboard::snap_delta_modifier (), Keyboard::snap_modifier ());
 
-       vector<string>::iterator g;
-       vector<AccelKey>::iterator b;
-       vector<string>::iterator n;
+       return (contains_d && ((contains_s && d_contains_s) || !contains_s));
+}
 
-       release_keys.clear ();
+/* Constraint and copy modifiers are both in effect at the beginning of some drags, and may be set ambiguously */
+bool
+ArdourKeyboard::indicates_copy (guint state)
+{
+       const bool contains_c = Keyboard::modifier_state_contains (state, Keyboard::CopyModifier);
+       const bool equals_cs = Keyboard::modifier_state_equals (state, constraint_modifier ());
 
-       bool show_bindings = (getenv ("ARDOUR_SHOW_BINDINGS") != 0);
+       return  contains_c && !equals_cs;
+}
 
-       for (n = names.begin(), b = bindings.begin(), g = groups.begin(); n != names.end(); ++n, ++b, ++g) {
+bool
+ArdourKeyboard::indicates_constraint (guint state)
+{
+       const bool contains_cs = Keyboard::modifier_state_contains (state, constraint_modifier ());
+       const bool equals_c = Keyboard::modifier_state_equals (state, Keyboard::CopyModifier);
 
-               if (show_bindings) {
+       return contains_cs && !equals_c;
+}
 
-                       cerr << "Action: " << (*n) << " Group: " << (*g) << " binding = ";
+void
+ArdourKeyboard::set_constraint_modifier (guint mod)
+{
+       constraint_mod = mod;
+       the_keyboard().reset_relevant_modifier_key_mask();
+}
 
-                       if ((*b).get_key() != GDK_VoidSymbol) {
-                               cerr << (*b).get_key() << " w/mod = " << hex << (*b).get_mod() << dec << " = " << (*b).get_abbrev();
-                       } else {
-                               cerr << "unbound";
-                       }
+void
+ArdourKeyboard::set_trim_contents_modifier (guint mod)
+{
+       trim_contents_mod = mod;
+       the_keyboard().reset_relevant_modifier_key_mask();
+}
 
-                       cerr << endl;
-               }
-       }
+void
+ArdourKeyboard::set_trim_overlap_modifier (guint mod)
+{
+       trim_overlap_mod = mod;
+       the_keyboard().reset_relevant_modifier_key_mask();
+}
 
-       for (n = names.begin(), b = bindings.begin(), g = groups.begin(); n != names.end(); ++n, ++b, ++g) {
-               if ((*b).get_mod() & Gdk::RELEASE_MASK) {
-                       release_keys.insert (pair<AccelKey,two_strings> (*b, two_strings (*g, *n)));
-               }
-       }
+void
+ArdourKeyboard::set_trim_anchored_modifier (guint mod)
+{
+       trim_anchored_mod = mod;
+       the_keyboard().reset_relevant_modifier_key_mask();
+}
 
-       return true;
+void
+ArdourKeyboard::set_fine_adjust_modifier (guint mod)
+{
+       fine_adjust_mod = mod;
+       the_keyboard().reset_relevant_modifier_key_mask();
 }
 
+void
+ArdourKeyboard::set_push_points_modifier (guint mod)
+{
+       push_points_mod = mod;
+       the_keyboard().reset_relevant_modifier_key_mask();
+}
 
+void
+ArdourKeyboard::set_note_size_relative_modifier (guint mod)
+{
+       note_size_relative_mod = mod;
+       the_keyboard().reset_relevant_modifier_key_mask();
+}
+
+Selection::Operation
+ArdourKeyboard::selection_type (guint state)
+{
+       /* note that there is no modifier for "Add" */
+
+       if (modifier_state_equals (state, RangeSelectModifier)) {
+               return Selection::Extend;
+       } else if (modifier_state_equals (state, PrimaryModifier)) {
+               return Selection::Toggle;
+       } else {
+               return Selection::Set;
+       }
+}