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livetrax/gtk2_ardour/keyboard.cc

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/*
Copyright (C) 2001 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.
*/
#include "ardour_ui.h"
#include <algorithm>
#include <fstream>
#include <ctype.h>
#include <gdk/gdkkeysyms.h>
#include <pbd/error.h>
#include "keyboard.h"
#include "gui_thread.h"
#include "i18n.h"
using namespace PBD;
#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;
uint32_t Keyboard::Control = GDK_CONTROL_MASK;
uint32_t Keyboard::Shift = GDK_SHIFT_MASK;
uint32_t Keyboard::Alt = GDK_MOD1_MASK;
uint32_t Keyboard::Meta;
Keyboard* Keyboard::_the_keyboard = 0;
Gtk::Window* Keyboard::current_window = 0;
bool Keyboard::_some_magic_widget_has_focus = false;
/* 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 ();
/* figure out Meta */
uint32_t possible_meta[] = { GDK_MOD2_MASK, GDK_MOD3_MASK, GDK_MOD4_MASK, GDK_MOD5_MASK, 0};
int i;
for (i = 0; possible_meta[i]; ++i) {
if (!(RelevantModifierKeyMask & possible_meta[i])) {
break;
}
}
Meta = possible_meta[i];
snooper_id = gtk_key_snooper_install (_snooper, (gpointer) this);
XMLNode* node = ARDOUR_UI::instance()->keyboard_settings();
set_state (*node);
}
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)
{
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;
#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 if (event->type == GDK_KEY_RELEASE) {
State::iterator i;
if ((i = find (state.begin(), state.end(), keyval)) != state.end()) {
state.erase (i);
sort (state.begin(), state.end());
}
}
if (event->type == GDK_KEY_RELEASE && event->keyval == GDK_w && modifier_state_equals (event->state, Control)) {
if (current_window) {
current_window->hide ();
current_window = 0;
}
}
return false;
}
bool
Keyboard::key_is_down (uint32_t keyval)
{
return find (state.begin(), state.end(), keyval) != state.end();
}
bool
Keyboard::enter_window (GdkEventCrossing *ev, Gtk::Window* win)
{
current_window = win;
return false;
}
bool
Keyboard::leave_window (GdkEventCrossing *ev, Gtk::Window* win)
{
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;
}
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);
}
void
Keyboard::set_delete_button (guint but)
{
delete_but = but;
}
void
Keyboard::set_delete_modifier (guint mod)
{
RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~delete_mod);
delete_mod = mod;
RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | delete_mod);
}
void
Keyboard::set_meta_modifier (guint mod)
{
/* we don't include Meta in the RelevantModifierKeyMask because its not used
in the same way as snap_mod, delete_mod etc. the only reason we allow it to be
set at all is that X Window has no convention for the keyboard modifier
that Meta should use. Some Linux distributions bind NumLock to Mod2, which
is our default Meta modifier, and this causes severe problems.
*/
Meta = mod;
}
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_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, Shift)) {
return Selection::Extend;
} else if (modifier_state_equals (state, Control)) {
return Selection::Toggle;
} else {
return Selection::Set;
}
}