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livetrax/libs/gtkmm2ext/keyboard.cc

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/*
* Copyright (C) 2001-2016 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2011-2012 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2013 Colin Fletcher <colin.m.fletcher@googlemail.com>
* Copyright (C) 2015-2016 Nick Mainsbridge <mainsbridge@gmail.com>
* Copyright (C) 2015-2017 Robin Gareus <robin@gareus.org>
* Copyright (C) 2016 Tim Mayberry <mojofunk@gmail.com>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <vector>
#include <algorithm>
#include <cerrno>
#include <ctype.h>
#include "pbd/gstdio_compat.h"
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#include <gdk/gdkkeysyms.h>
#include <gtkmm/accelmap.h>
#include <gtkmm/widget.h>
#include <gtkmm/window.h>
#include "pbd/convert.h"
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#include "pbd/debug.h"
#include "pbd/error.h"
#include "pbd/file_utils.h"
#include "pbd/search_path.h"
#include "pbd/unwind.h"
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#include "pbd/xml++.h"
#include "gtkmm2ext/actions.h"
#include "gtkmm2ext/bindings.h"
#include "gtkmm2ext/debug.h"
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#include "gtkmm2ext/keyboard.h"
#include "gtkmm2ext/utils.h"
#include "pbd/i18n.h"
using namespace PBD;
using namespace Gtk;
using namespace Gtkmm2ext;
using namespace std;
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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::insert_note_but = 1;
guint Keyboard::insert_note_mod = GDK_CONTROL_MASK;
#ifdef __APPLE__
guint const Keyboard::PrimaryModifier = GDK_MOD2_MASK; // Command
guint const Keyboard::SecondaryModifier = GDK_CONTROL_MASK; // Control
guint const Keyboard::TertiaryModifier = GDK_SHIFT_MASK; // Shift
guint const Keyboard::Level4Modifier = GDK_MOD1_MASK; // Alt/Option
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guint Keyboard::CopyModifier = GDK_CONTROL_MASK; // Control
guint Keyboard::RangeSelectModifier = GDK_SHIFT_MASK;
guint Keyboard::button2_modifiers = Keyboard::SecondaryModifier | Keyboard::Level4Modifier;
guint Keyboard::momentary_push_modifiers = Keyboard::PrimaryModifier;
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const char*
Keyboard::primary_modifier_name ()
{
return _("Command");
}
const char*
Keyboard::secondary_modifier_name ()
{
return _("Control");
}
const char*
Keyboard::tertiary_modifier_name ()
{
return S_("Key|Shift");
}
const char*
Keyboard::level4_modifier_name ()
{
return _("Option");
}
const char*
Keyboard::button2_name ()
{
return _("Middle Click (or Ctrl+Alt+Click)");
}
const char*
Keyboard::momentary_push_name ()
{
return _("Cmd+Click (or Middle-Click)");
}
const char*
Keyboard::primary_modifier_short_name ()
{
return _("Cmd");
}
const char*
Keyboard::secondary_modifier_short_name ()
{
return _("Ctrl");
}
const char*
Keyboard::tertiary_modifier_short_name ()
{
return S_("Key|Shift");
}
const char*
Keyboard::level4_modifier_short_name ()
{
return _("Opt");
}
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guint Keyboard::snap_mod = Keyboard::Level4Modifier | Keyboard::TertiaryModifier; // XXX this is probably completely wrong
guint Keyboard::snap_delta_mod = Keyboard::Level4Modifier;
#else
guint const Keyboard::PrimaryModifier = GDK_CONTROL_MASK; // Control
guint const Keyboard::SecondaryModifier = GDK_MOD1_MASK; // Alt/Option
guint const Keyboard::TertiaryModifier = GDK_SHIFT_MASK; // Shift
guint const Keyboard::Level4Modifier = GDK_MOD4_MASK | GDK_SUPER_MASK; // Mod4/Windows
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guint Keyboard::CopyModifier = GDK_CONTROL_MASK;
guint Keyboard::RangeSelectModifier = GDK_SHIFT_MASK;
guint Keyboard::button2_modifiers = 0; /* not used */
guint Keyboard::momentary_push_modifiers = 0; /* not used */
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const char*
Keyboard::primary_modifier_name ()
{
return _("Control");
}
const char*
Keyboard::secondary_modifier_name ()
{
return _("Alt");
}
const char*
Keyboard::tertiary_modifier_name ()
{
return S_("Key|Shift");
}
const char*
Keyboard::level4_modifier_name ()
{
return _("Windows");
}
const char*
Keyboard::button2_name ()
{
return _("Middle-Click");
}
const char*
Keyboard::momentary_push_name ()
{
return _("Middle-Click");
}
const char*
Keyboard::primary_modifier_short_name ()
{
return _("Ctrl");
}
const char*
Keyboard::secondary_modifier_short_name ()
{
return _("Alt");
}
const char*
Keyboard::tertiary_modifier_short_name ()
{
return S_("Key|Shift");
}
const char*
Keyboard::level4_modifier_short_name ()
{
return _("Win");
}
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guint Keyboard::snap_mod = Keyboard::SecondaryModifier;
guint Keyboard::snap_delta_mod = Keyboard::SecondaryModifier | Keyboard::Level4Modifier;
#endif
guint Keyboard::group_override_modifiers = Keyboard::TertiaryModifier;
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const char*
Keyboard::group_override_event_name ()
{
return tertiary_modifier_name ();
}
std::string
Keyboard::format_modifier (uint32_t mod)
{
std::string rv = "";
if (mod & PrimaryModifier) {
rv += primary_modifier_short_name ();
}
if (mod & SecondaryModifier) {
if (!rv.empty ()) {
rv += "+";
}
rv += secondary_modifier_short_name ();
}
if (mod & TertiaryModifier) {
if (!rv.empty ()) {
rv += "+";
}
rv += tertiary_modifier_short_name ();
}
if (mod & Level4Modifier) {
if (!rv.empty ()) {
rv += "+";
}
rv += level4_modifier_short_name ();
}
if (!rv.empty ()) {
rv += "+";
}
return rv;
}
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guint Keyboard::GainFineScaleModifier = Keyboard::PrimaryModifier;
guint Keyboard::GainExtraFineScaleModifier = Keyboard::SecondaryModifier;
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guint Keyboard::ScrollZoomVerticalModifier = Keyboard::SecondaryModifier;
guint Keyboard::ScrollZoomHorizontalModifier = Keyboard::PrimaryModifier;
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guint Keyboard::ScrollHorizontalModifier = Keyboard::TertiaryModifier;
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Keyboard* Keyboard::_the_keyboard = 0;
Gtk::Window* Keyboard::current_window = 0;
bool Keyboard::_some_magic_widget_has_focus = false;
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const int Keyboard::close_window_key = GDK_w;
guint Keyboard::close_window_modifier = Keyboard::PrimaryModifier;
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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;
string Keyboard::binding_filename_suffix = X_(".keys");
Gtk::Window* Keyboard::pre_dialog_active_window = 0;
/* set this to initially contain the modifiers we care about, then track changes in ::set_edit_modifier() etc. */
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GdkModifierType Keyboard::RelevantModifierKeyMask;
sigc::signal0<void> Keyboard::RelevantModifierKeysChanged;
sigc::signal1<void, Gtk::Window*> Keyboard::HideMightMeanQuit;
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) {
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_the_keyboard = this;
_current_binding_name = _("Unknown");
}
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reset_relevant_modifier_key_mask ();
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snooper_id = gtk_key_snooper_install (_snooper, (gpointer)this);
}
Keyboard::~Keyboard ()
{
gtk_key_snooper_remove (snooper_id);
}
XMLNode&
Keyboard::get_state () const
{
XMLNode* node = new XMLNode ("Keyboard");
node->set_property ("copy-modifier", CopyModifier);
node->set_property ("edit-button", edit_but);
node->set_property ("edit-modifier", edit_mod);
node->set_property ("delete-button", delete_but);
node->set_property ("delete-modifier", delete_mod);
node->set_property ("snap-modifier", snap_mod);
node->set_property ("snap-delta-modifier", snap_delta_mod);
node->set_property ("insert-note-button", insert_note_but);
node->set_property ("insert-note-modifier", insert_note_mod);
return *node;
}
int
Keyboard::set_state (const XMLNode& node, int /*version*/)
{
node.get_property ("copy-modifier", CopyModifier);
node.get_property ("edit-button", edit_but);
node.get_property ("edit-modifier", edit_mod);
node.get_property ("delete-button", delete_but);
node.get_property ("delete-modifier", delete_mod);
node.get_property ("snap-modifier", snap_mod);
node.get_property ("snap-delta-modifier", snap_delta_mod);
node.get_property ("insert-note-button", insert_note_but);
node.get_property ("insert-note-modifier", insert_note_mod);
return 0;
}
gint
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Keyboard::_snooper (GtkWidget* widget, GdkEventKey* event, gpointer data)
{
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return ((Keyboard*)data)->snooper (widget, event);
}
gint
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Keyboard::snooper (GtkWidget* widget, GdkEventKey* event)
{
uint32_t keyval;
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bool ret = false;
DEBUG_TRACE (
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DEBUG::Keyboard,
string_compose (
"Snoop widget %1 name: [%6] key %2 [%8] type %3 state %4 [%7] magic %5\n",
widget, event->keyval, event->type, event->state, _some_magic_widget_has_focus,
gtk_widget_get_name (widget), show_gdk_event_state (event->state), gdk_keyval_name (event->keyval)));
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->state & ScrollZoomVerticalModifier) {
/* There is a special and rather hacky situation in Editor which makes
it useful to know when the modifier key for vertical zoom has been
released, so emit a signal here (see Editor::_stepping_axis_view).
Note that the state bit for the modifier key is set for the key-up
event when the modifier is released, but not the key-down when it
is pressed, so we get here on key-up, which is what we want.
*/
ZoomVerticalModifierReleased (); /* EMIT SIGNAL */
}
if (event->type == GDK_KEY_PRESS) {
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if (find (state.begin (), state.end (), keyval) == state.end ()) {
state.push_back (keyval);
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sort (state.begin (), state.end ());
} else {
/* key is already down. if its also used for release,
prevent auto-repeat events.
*/
#if 0
/* August 2015: we don't have any release bindings
*/
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()) {
DEBUG_TRACE (DEBUG::Keyboard, "Suppress auto repeat\n");
ret = true;
break;
}
}
#endif
}
}
if (event->type == GDK_KEY_RELEASE) {
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State::iterator k = find (state.begin (), state.end (), keyval);
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if (k != state.end ()) {
/* this cannot change the ordering, so need to sort */
state.erase (k);
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if (state.empty ()) {
DEBUG_TRACE (DEBUG::Keyboard, "no keys down\n");
} else {
#ifndef NDEBUG
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if (DEBUG_ENABLED (DEBUG::Keyboard)) {
DEBUG_STR_DECL (a);
DEBUG_STR_APPEND (a, "keyboard, keys still down: ");
for (State::iterator i = state.begin (); i != state.end (); ++i) {
DEBUG_STR_APPEND (a, gdk_keyval_name (*i));
DEBUG_STR_APPEND (a, ',');
}
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DEBUG_STR_APPEND (a, '\n');
DEBUG_TRACE (DEBUG::Keyboard, DEBUG_STR (a).str ());
}
#endif /* NDEBUG */
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}
}
if (modifier_state_equals (event->state, PrimaryModifier)) {
/* Special keys that we want to handle in
any dialog, no matter whether it uses
the regular set of accelerators or not
*/
switch (event->keyval) {
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case close_window_key:
if (close_current_dialog ()) {
ret = true;
}
break;
}
}
}
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DEBUG_TRACE (DEBUG::Keyboard, string_compose ("snooper returns %1\n", ret));
return ret;
}
void
Keyboard::reset_relevant_modifier_key_mask ()
{
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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);
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RelevantModifierKeysChanged (); /* EMIT SIGNAL */
}
bool
Keyboard::close_current_dialog ()
{
if (current_window) {
HideMightMeanQuit (current_window); /* EMIT SIGNAL */
current_window->hide ();
current_window = 0;
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if (pre_dialog_active_window) {
pre_dialog_active_window->present ();
pre_dialog_active_window = 0;
}
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return true;
}
return false;
}
bool
Keyboard::catch_user_event_for_pre_dialog_focus (GdkEvent* ev, Gtk::Window* w)
{
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switch (ev->type) {
case GDK_BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
pre_dialog_active_window = w;
break;
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case GDK_FOCUS_CHANGE:
if (ev->focus_change.in) {
pre_dialog_active_window = w;
}
break;
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default:
break;
}
return false;
}
bool
Keyboard::key_is_down (uint32_t keyval)
{
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return find (state.begin (), state.end (), keyval) != state.end ();
}
guint
Keyboard::modifier_state ()
{
int mask = 0;
for (auto const& keyval : state) {
switch (keyval) {
case GDK_Meta_R:
case GDK_Meta_L:
mask |= GDK_MOD2_MASK;
break;
case GDK_Shift_R:
case GDK_Shift_L:
mask |= GDK_SHIFT_MASK;
break;
case GDK_Caps_Lock:
mask |= GDK_LOCK_MASK;
break;
case GDK_Alt_R:
case GDK_Alt_L:
mask |= GDK_MOD1_MASK;
break;
case GDK_Control_R:
case GDK_Control_L:
mask |= GDK_CONTROL_MASK;
break;
default:
break;
}
}
return mask & RelevantModifierKeyMask;
}
bool
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Keyboard::enter_window (GdkEventCrossing*, Gtk::Window* win)
{
current_window = win;
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DEBUG_TRACE (DEBUG::Keyboard, string_compose ("Entering window, title = %1\n", win->get_title ()));
return false;
}
bool
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Keyboard::leave_window (GdkEventCrossing* ev, Gtk::Window* /*win*/)
{
if (ev) {
switch (ev->detail) {
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case GDK_NOTIFY_INFERIOR:
DEBUG_TRACE (DEBUG::Keyboard, "INFERIOR crossing ... out\n");
break;
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case GDK_NOTIFY_VIRTUAL:
DEBUG_TRACE (DEBUG::Keyboard, "VIRTUAL crossing ... out\n");
/* fallthrough */
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default:
DEBUG_TRACE (DEBUG::Keyboard, "REAL crossing ... out\n");
DEBUG_TRACE (DEBUG::Keyboard, "Clearing current target\n");
state.clear ();
current_window = 0;
}
} else {
DEBUG_TRACE (DEBUG::Keyboard, "LEAVE window without event\n");
current_window = 0;
}
return false;
}
bool
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Keyboard::focus_in_window (GdkEventFocus*, Gtk::Window* win)
{
current_window = win;
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DEBUG_TRACE (DEBUG::Keyboard, string_compose ("Focusing in window, title = %1\n", win->get_title ()));
return false;
}
bool
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Keyboard::focus_out_window (GdkEventFocus* ev, Gtk::Window* win)
{
if (ev) {
state.clear ();
current_window = 0;
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} else {
if (win == current_window) {
current_window = 0;
}
}
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DEBUG_TRACE (DEBUG::Keyboard, string_compose ("Foucusing out window, title = %1\n", win->get_title ()));
return false;
}
void
Keyboard::set_edit_button (guint but)
{
edit_but = but;
}
void
Keyboard::set_edit_modifier (guint mod)
{
edit_mod = mod;
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reset_relevant_modifier_key_mask ();
}
void
Keyboard::set_delete_button (guint but)
{
delete_but = but;
}
void
Keyboard::set_delete_modifier (guint mod)
{
delete_mod = mod;
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reset_relevant_modifier_key_mask ();
}
void
Keyboard::set_insert_note_button (guint but)
{
insert_note_but = but;
}
void
Keyboard::set_insert_note_modifier (guint mod)
{
insert_note_mod = mod;
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reset_relevant_modifier_key_mask ();
}
void
Keyboard::set_modifier (uint32_t newval, uint32_t& var)
{
var = newval;
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reset_relevant_modifier_key_mask ();
}
void
Keyboard::set_snap_modifier (guint mod)
{
snap_mod = mod;
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reset_relevant_modifier_key_mask ();
}
void
Keyboard::set_snap_delta_modifier (guint mod)
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{
snap_delta_mod = mod;
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reset_relevant_modifier_key_mask ();
}
bool
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Keyboard::is_edit_event (GdkEventButton* ev)
{
return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
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(ev->button == Keyboard::edit_button ()) &&
((ev->state & RelevantModifierKeyMask) == Keyboard::edit_modifier ());
}
bool
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Keyboard::is_insert_note_event (GdkEventButton* ev)
{
return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
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(ev->button == Keyboard::insert_note_button ()) &&
((ev->state & RelevantModifierKeyMask) == Keyboard::insert_note_modifier ());
}
bool
Keyboard::is_button2_event (GdkEventButton* ev)
{
return (ev->button == 2) ||
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((ev->button == 1) && Keyboard::button2_modifiers != 0 &&
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((ev->state & Keyboard::button2_modifiers) == Keyboard::button2_modifier ()));
}
bool
Keyboard::is_momentary_push_event (GdkEventButton* ev)
{
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return (is_button2_event (ev)) ||
((ev->button == 1) && Keyboard::momentary_push_modifiers != 0 &&
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((ev->state & RelevantModifierKeyMask) == Keyboard::momentary_push_modifier ()));
}
bool
Keyboard::is_group_override_event (GdkEventButton* ev)
{
return ((ev->button == 1) && ((ev->state & RelevantModifierKeyMask) == Keyboard::group_override_modifiers));
}
bool
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Keyboard::is_delete_event (GdkEventButton* ev)
{
return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
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(ev->button == Keyboard::delete_button ()) &&
((ev->state & RelevantModifierKeyMask) == Keyboard::delete_modifier ());
}
bool
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Keyboard::is_context_menu_event (GdkEventButton* ev)
{
return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
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(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)
{
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return (state & mask) == (guint)mask;
}
bool
Keyboard::modifier_state_equals (guint state, ModifierMask mask)
{
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return (state & RelevantModifierKeyMask) == (guint)mask;
}
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) {
/* Call to specific implementation to save bindings to path */
store_keybindings (user_keybindings_path);
}
}
bool
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Keyboard::load_keybindings (string const& path)
{
try {
info << "Loading bindings from " << path << endl;
/* Call to specific implementation to load bindings from path */
read_keybindings (path);
_current_binding_name = _("Unknown");
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for (map<string, string>::iterator x = binding_files.begin (); x != binding_files.end (); ++x) {
if (path == x->second) {
_current_binding_name = x->first;
break;
}
}
} catch (...) {
error << string_compose (_("key bindings file not found at \"%2\" or contains errors."), path)
<< endmsg;
return false;
}
return true;
}
int
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Keyboard::read_keybindings (string const& path)
{
XMLTree tree;
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if (!tree.read (path.c_str ())) {
return -1;
}
/* toplevel node is "BindingSet; children are "Bindings" */
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XMLNodeList const& children = tree.root ()->children ();
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for (XMLNodeList::const_iterator i = children.begin (); i != children.end (); ++i) {
XMLNode const* child = *i;
if (child->name () == X_("Bindings")) {
XMLProperty const* name = child->property (X_("name"));
if (!name) {
warning << _("Keyboard binding found without a name") << endmsg;
continue;
}
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Bindings* b = new Bindings (name->value ());
b->load (**i);
}
}
return 0;
}
int
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Keyboard::store_keybindings (string const& path)
{
XMLNode* node = new XMLNode (X_("BindingSet"));
XMLNode* bnode;
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int ret = 0;
DEBUG_TRACE (DEBUG::Bindings, string_compose ("save bindings to %1\n", path));
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for (list<Bindings*>::const_iterator b = Bindings::bindings.begin (); b != Bindings::bindings.end (); ++b) {
bnode = new XMLNode (X_("Bindings"));
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bnode->set_property (X_("name"), (*b)->name ());
(*b)->save (*bnode);
node->add_child_nocopy (*bnode);
}
XMLTree tree;
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tree.set_root (node); /* tree now owns root and will delete it */
if (!tree.write (path)) {
error << string_compose (_("Cannot save key bindings to %1"), path) << endmsg;
ret = -1;
}
return ret;
}
int
Keyboard::reset_bindings ()
{
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if (Glib::file_test (user_keybindings_path, Glib::FILE_TEST_EXISTS)) {
string new_path = user_keybindings_path;
new_path += ".old";
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if (::g_rename (user_keybindings_path.c_str (), new_path.c_str ())) {
error << string_compose (_("Cannot rename your own keybinding file (%1)"), strerror (errno)) << endmsg;
return -1;
}
}
{
PBD::Unwinder<bool> uw (can_save_keybindings, false);
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Bindings::reset_bindings ();
setup_keybindings ();
Bindings::associate_all ();
}
return 0;
}