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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.
$Id$
*/
#include "ardour_ui.h"
#include <algorithm>
#include <fstream>
#include <ctype.h>
#include <X11/keysymdef.h>
#include <gdk/gdkx.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 = GDK_MOD2_MASK;
Keyboard* Keyboard::_the_keyboard = 0;
/* set this to initially contain the modifiers we care about, then track changes in ::set_edit_modifier() etc. */
GdkModifierType Keyboard::RelevantModifierKeyMask =
GdkModifierType (GDK_SHIFT_MASK|GDK_CONTROL_MASK|GDK_MOD1_MASK|GDK_MOD3_MASK);
Keyboard::Keyboard ()
{
if (_the_keyboard == 0) {
_the_keyboard = this;
}
collecting_prefix = false;
get_modifier_masks ();
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);
delete [] modifier_masks;
}
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) {
bool was_prefix = false;
if (collecting_prefix) {
switch (keyval) {
case GDK_0:
current_prefix += '0';
was_prefix = true;
break;
case GDK_1:
current_prefix += '1';
was_prefix = true;
break;
case GDK_2:
current_prefix += '2';
was_prefix = true;
break;
case GDK_3:
current_prefix += '3';
was_prefix = true;
break;
case GDK_4:
current_prefix += '4';
was_prefix = true;
break;
case GDK_5:
current_prefix += '5';
was_prefix = true;
break;
case GDK_6:
current_prefix += '6';
was_prefix = true;
break;
case GDK_7:
current_prefix += '7';
was_prefix = true;
break;
case GDK_8:
current_prefix += '8';
was_prefix = true;
break;
case GDK_9:
current_prefix += '9';
was_prefix = true;
break;
case GDK_period:
current_prefix += '.';
was_prefix = true;
break;
default:
was_prefix = false;
collecting_prefix = false;
break;
}
}
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());
}
}
return false;
}
bool
Keyboard::key_is_down (uint32_t keyval)
{
return find (state.begin(), state.end(), keyval) != state.end();
}
Keyboard::State
Keyboard::translate_key_name (const string& name)
{
string::size_type i;
string::size_type len;
bool at_end;
string::size_type hyphen;
string keyname;
string whatevers_left;
State result;
guint keycode;
i = 0;
len = name.length();
at_end = (len == 0);
while (!at_end) {
whatevers_left = name.substr (i);
if ((hyphen = whatevers_left.find_first_of ('-')) == string::npos) {
/* no hyphen, so use the whole thing */
keyname = whatevers_left;
at_end = true;
} else {
/* There is a hyphen. */
if (hyphen == 0 && whatevers_left.length() == 1) {
/* its the first and only character */
keyname = "-";
at_end = true;
} else {
/* use the text before the hypen */
keyname = whatevers_left.substr (0, hyphen);
if (hyphen == len - 1) {
at_end = true;
} else {
i += hyphen + 1;
at_end = (i >= len);
}
}
}
if (keyname.length() == 1 && isupper (keyname[0])) {
result.push_back (GDK_Shift_L);
}
if ((keycode = gdk_keyval_from_name(get_real_keyname (keyname).c_str())) == GDK_VoidSymbol) {
error << string_compose(_("KeyboardTarget: keyname \"%1\" is unknown."), keyname) << endmsg;
result.clear();
return result;
}
result.push_back (keycode);
}
sort (result.begin(), result.end());
return result;
}
string
Keyboard::get_real_keyname (const string& name)
{
if (name == "Control" || name == "Ctrl") {
return "Control_L";
}
if (name == "Meta" || name == "MetaL") {
return "Meta_L";
}
if (name == "MetaR") {
return "Meta_R";
}
if (name == "Alt" || name == "AltL") {
return "Alt_L";
}
if (name == "AltR") {
return "Alt_R";
}
if (name == "Shift") {
return "Shift_L";
}
if (name == "Shift_R") {
return "Shift_L";
}
if (name == " ") {
return "space";
}
if (name == "!") {
return "exclam";
}
if (name == "\"") {
return "quotedbl";
}
if (name == "#") {
return "numbersign";
}
if (name == "$") {
return "dollar";
}
if (name == "%") {
return "percent";
}
if (name == "&") {
return "ampersand";
}
if (name == "'") {
return "apostrophe";
}
if (name == "'") {
return "quoteright";
}
if (name == "(") {
return "parenleft";
}
if (name == ")") {
return "parenright";
}
if (name == "*") {
return "asterisk";
}
if (name == "+") {
return "plus";
}
if (name == ",") {
return "comma";
}
if (name == "-") {
return "minus";
}
if (name == ".") {
return "period";
}
if (name == "/") {
return "slash";
}
if (name == ":") {
return "colon";
}
if (name == ";") {
return "semicolon";
}
if (name == "<") {
return "less";
}
if (name == "=") {
return "equal";
}
if (name == ">") {
return "greater";
}
if (name == "?") {
return "question";
}
if (name == "@") {
return "at";
}
if (name == "[") {
return "bracketleft";
}
if (name == "\\") {
return "backslash";
}
if (name == "]") {
return "bracketright";
}
if (name == "^") {
return "asciicircum";
}
if (name == "_") {
return "underscore";
}
if (name == "`") {
return "grave";
}
if (name == "`") {
return "quoteleft";
}
if (name == "{") {
return "braceleft";
}
if (name == "|") {
return "bar";
}
if (name == "}") {
return "braceright";
}
if (name == "~") {
return "asciitilde";
}
return name;
}
int
Keyboard::get_prefix (float& val, bool& was_floating)
{
if (current_prefix.length()) {
if (current_prefix.find ('.') != string::npos) {
was_floating = true;
} else {
was_floating = false;
}
if (sscanf (current_prefix.c_str(), "%f", &val) == 1) {
return 0;
}
current_prefix = "";
}
return -1;
}
void
Keyboard::start_prefix ()
{
collecting_prefix = true;
current_prefix = "";
}
void
Keyboard::clear_modifier_state ()
{
modifier_mask = 0;
}
void
Keyboard::check_modifier_state ()
{
char keys[32];
int i, j;
clear_modifier_state ();
XQueryKeymap (GDK_DISPLAY(), keys);
for (i = 0; i < 32; ++i) {
for (j = 0; j < 8; ++j) {
if (keys[i] & (1<<j)) {
modifier_mask |= modifier_masks[(i*8)+j];
}
}
}
}
void
Keyboard::check_meta_numlock (char keycode, guint mod, string modname)
{
guint alternate_meta_mod;
string alternate_meta_modname;
if (mod == Meta) {
guint keysym = XKeycodeToKeysym (GDK_DISPLAY(), keycode, 0);
if (keysym == GDK_Num_Lock) {
switch (mod) {
case GDK_MOD2_MASK:
alternate_meta_mod = GDK_MOD3_MASK;
alternate_meta_modname = "Mod3";
break;
case GDK_MOD3_MASK:
alternate_meta_mod = GDK_MOD2_MASK;
alternate_meta_modname = "Mod2";
break;
case GDK_MOD4_MASK:
alternate_meta_mod = GDK_MOD2_MASK;
alternate_meta_modname = "Mod2";
break;
case GDK_MOD5_MASK:
alternate_meta_mod = GDK_MOD2_MASK;
alternate_meta_modname = "Mod2";
break;
default:
error << string_compose (_("Your system is completely broken - NumLock uses \"%1\""
"as its modifier. This is madness - see the man page "
"for xmodmap to find out how to fix this."),
modname)
<< endmsg;
return;
}
warning << string_compose (_("Your system generates \"%1\" when the NumLock key "
"is pressed. This can cause problems when editing "
"so Ardour will use %2 to mean Meta rather than %1"),
modname, alternate_meta_modname)
<< endmsg;
set_meta_modifier (alternate_meta_mod);
}
}
}
void
Keyboard::get_modifier_masks ()
{
XModifierKeymap *modifiers;
KeyCode *keycode;
int i;
int bound;
XDisplayKeycodes (GDK_DISPLAY(), &min_keycode, &max_keycode);
/* This function builds a lookup table to provide rapid answers to
the question: what, if any, modmask, is associated with a given
keycode ?
*/
modifiers = XGetModifierMapping (GDK_DISPLAY());
modifier_masks = new int32_t [max_keycode+1];
keycode = modifiers->modifiermap;
for (i = 0; i < modifiers->max_keypermod; ++i) { /* shift */
if (*keycode) {
modifier_masks[*keycode] = GDK_SHIFT_MASK;
// cerr << "Shift = " << XKeysymToString (XKeycodeToKeysym (GDK_DISPLAY(), *keycode, 0)) << endl;
}
keycode++;
}
for (i = 0; i < modifiers->max_keypermod; ++i) keycode++; /* skip lock */
for (i = 0; i < modifiers->max_keypermod; ++i) { /* control */
if (*keycode) {
modifier_masks[*keycode] = GDK_CONTROL_MASK;
// cerr << "Control = " << XKeysymToString (XKeycodeToKeysym (GDK_DISPLAY(), *keycode, 0)) << endl;
}
keycode++;
}
bound = 0;
for (i = 0; i < modifiers->max_keypermod; ++i) { /* mod 1 */
if (*keycode) {
modifier_masks[*keycode] = GDK_MOD1_MASK;
// cerr << "Mod1 = " << XKeysymToString (XKeycodeToKeysym (GDK_DISPLAY(), *keycode, 0)) << endl;
bound++;
}
keycode++;
}
#ifdef WARN_ABOUT_DUPLICATE_MODIFIERS
if (bound > 1) {
warning << string_compose (_("You have %1 keys bound to \"mod1\""), bound) << endmsg;
}
#endif
bound = 0;
for (i = 0; i < modifiers->max_keypermod; ++i) { /* mod2 */
if (*keycode) {
modifier_masks[*keycode] = GDK_MOD2_MASK;
check_meta_numlock (*keycode, GDK_MOD2_MASK, "Mod2");
//cerr << "Mod2 = " << std::hex << (int) *keycode << std::dec << " = " << XKeysymToString (XKeycodeToKeysym (GDK_DISPLAY(), *keycode, 0)) << endl;
bound++;
}
keycode++;
}
#ifdef WARN_ABOUT_DUPLICATE_MODIFIERS
if (bound > 1) {
warning << string_compose (_("You have %1 keys bound to \"mod2\""), bound) << endmsg;
}
#endif
bound = 0;
for (i = 0; i < modifiers->max_keypermod; ++i) { /* mod3 */
if (*keycode) {
modifier_masks[*keycode] = GDK_MOD3_MASK;
check_meta_numlock (*keycode, GDK_MOD3_MASK, "Mod3");
// cerr << "Mod3 = " << XKeysymToString (XKeycodeToKeysym (GDK_DISPLAY(), *keycode, 0)) << endl;
bound++;
}
keycode++;
}
#ifdef WARN_ABOUT_DUPLICATE_MODIFIERS
if (bound > 1) {
warning << string_compose (_("You have %1 keys bound to \"mod3\""), bound) << endmsg;
}
#endif
bound = 0;
for (i = 0; i < modifiers->max_keypermod; ++i) { /* mod 4 */
if (*keycode) {
modifier_masks[*keycode] = GDK_MOD4_MASK;
check_meta_numlock (*keycode, GDK_MOD4_MASK, "Mod4");
// cerr << "Mod4 = " << XKeysymToString (XKeycodeToKeysym (GDK_DISPLAY(), *keycode, 0)) << endl;
bound++;
}
keycode++;
}
#ifdef WARN_ABOUT_DUPLICATE_MODIFIERS
if (bound > 1) {
warning << string_compose (_("You have %1 keys bound to \"mod4\""), bound) << endmsg;
}
#endif
bound = 0;
for (i = 0; i < modifiers->max_keypermod; ++i) { /* mod 5 */
if (*keycode) {
modifier_masks[*keycode] = GDK_MOD5_MASK;
check_meta_numlock (*keycode, GDK_MOD5_MASK, "Mod5");
// cerr << "Mod5 = " << XKeysymToString (XKeycodeToKeysym (GDK_DISPLAY(), *keycode, 0)) << endl;
bound++;
}
keycode++;
}
#ifdef WARN_ABOUT_DUPLICATE_MODIFIERS
if (bound > 1) {
warning << string_compose (_("You have %1 keys bound to \"mod5\""), bound) << endmsg;
}
#endif
XFreeModifiermap (modifiers);
}
bool
Keyboard::enter_window (GdkEventCrossing *ev, Gtk::Window* win)
{
switch (ev->detail) {
case GDK_NOTIFY_INFERIOR:
break;
case GDK_NOTIFY_VIRTUAL:
/* fallthru */
default:
check_modifier_state ();
}
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 ();
clear_modifier_state ();
}
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;
}
}