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livetrax/libs/gtkmm2ext/gtk_ui.cc

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/*
Copyright (C) 1999-2005 Paul Barton-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 <cmath>
#include <fcntl.h>
#include <signal.h>
#include <unistd.h>
#include <cerrno>
#include <climits>
#include <cctype>
#include <gtkmm.h>
#include "pbd/error.h"
#include "pbd/touchable.h"
#include "pbd/failed_constructor.h"
#include "pbd/pthread_utils.h"
#include "pbd/replace_all.h"
#include "gtkmm2ext/application.h"
#include "gtkmm2ext/gtk_ui.h"
#include "gtkmm2ext/textviewer.h"
#include "gtkmm2ext/popup.h"
#include "gtkmm2ext/utils.h"
#include "gtkmm2ext/window_title.h"
#include "gtkmm2ext/actions.h"
#include "gtkmm2ext/activatable.h"
#include "gtkmm2ext/actions.h"
#include "i18n.h"
using namespace Gtkmm2ext;
using namespace Gtk;
using namespace Glib;
using namespace PBD;
using std::map;
UI *UI::theGtkUI = 0;
BaseUI::RequestType Gtkmm2ext::NullMessage = BaseUI::new_request_type();
BaseUI::RequestType Gtkmm2ext::ErrorMessage = BaseUI::new_request_type();
BaseUI::RequestType Gtkmm2ext::TouchDisplay = BaseUI::new_request_type();
BaseUI::RequestType Gtkmm2ext::StateChange = BaseUI::new_request_type();
BaseUI::RequestType Gtkmm2ext::SetTip = BaseUI::new_request_type();
BaseUI::RequestType Gtkmm2ext::AddIdle = BaseUI::new_request_type();
BaseUI::RequestType Gtkmm2ext::AddTimeout = BaseUI::new_request_type();
#include "pbd/abstract_ui.cc" /* instantiate the template */
UI::UI (string namestr, int *argc, char ***argv)
: AbstractUI<UIRequest> (namestr)
, _receiver (*this)
{
theMain = new Main (argc, argv);
_active = false;
if (!theGtkUI) {
theGtkUI = this;
} else {
fatal << "duplicate UI requested" << endmsg;
/* NOTREACHED */
}
/* the GUI event loop runs in the main thread of the app,
which is assumed to have called this.
*/
run_loop_thread = Threads::Thread::self();
/* store "this" as the UI-for-thread of this thread, same argument
as for previous line.
*/
set_event_loop_for_thread (this);
/* attach our request source to the default main context */
attach_request_source ();
errors = new TextViewer (800,600);
errors->text().set_editable (false);
errors->text().set_name ("ErrorText");
errors->signal_unmap().connect (sigc::bind (sigc::ptr_fun (&ActionManager::uncheck_toggleaction), X_("<Actions>/Editor/toggle-log-window")));
Glib::set_application_name(namestr);
WindowTitle title(Glib::get_application_name());
title += _("Log");
errors->set_title (title.get_string());
errors->dismiss_button().set_name ("ErrorLogCloseButton");
errors->signal_delete_event().connect (sigc::bind (sigc::ptr_fun (just_hide_it), (Window *) errors));
errors->set_type_hint (Gdk::WINDOW_TYPE_HINT_UTILITY);
//load_rcfile (rcfile);
/* instantiate the Application singleton */
Application::instance();
}
UI::~UI ()
{
_receiver.hangup ();
}
bool
UI::caller_is_ui_thread ()
{
return Threads::Thread::self() == run_loop_thread;
}
int
UI::load_rcfile (string path, bool themechange)
{
/* Yes, pointers to Glib::RefPtr. If these are not kept around,
* a segfault somewhere deep in the wonderfully robust glib will result.
* This does not occur if wiget.get_style is used instead of rc.get_style below,
* except that doesn't actually work...
*/
static Glib::RefPtr<Style>* fatal_style = 0;
static Glib::RefPtr<Style>* error_style = 0;
static Glib::RefPtr<Style>* warning_style = 0;
static Glib::RefPtr<Style>* info_style = 0;
if (path.length() == 0) {
return -1;
}
if (!Glib::file_test (path, Glib::FILE_TEST_EXISTS|Glib::FILE_TEST_IS_REGULAR)) {
error << "UI: couldn't find rc file \""
<< path
<< '"'
<< endmsg;
return -1;
}
RC rc (path.c_str());
//this is buggy in gtkmm for some reason, so use C
//RC::reset_styles (Gtk::Settings::get_default());
gtk_rc_reset_styles (gtk_settings_get_default());
theme_changed.emit();
if (themechange) {
return 0; //Don't continue on every time there is a theme change
}
/* have to pack widgets into a toplevel window so that styles will stick */
Window temp_window (WINDOW_TOPLEVEL);
temp_window.ensure_style ();
HBox box;
Label fatal_widget;
Label error_widget;
Label warning_widget;
Label info_widget;
RefPtr<Gtk::Style> style;
RefPtr<TextBuffer> buffer (errors->text().get_buffer());
box.pack_start (fatal_widget);
box.pack_start (error_widget);
box.pack_start (warning_widget);
box.pack_start (info_widget);
error_ptag = buffer->create_tag();
error_mtag = buffer->create_tag();
fatal_ptag = buffer->create_tag();
fatal_mtag = buffer->create_tag();
warning_ptag = buffer->create_tag();
warning_mtag = buffer->create_tag();
info_ptag = buffer->create_tag();
info_mtag = buffer->create_tag();
fatal_widget.set_name ("FatalMessage");
delete fatal_style;
/* This next line and the similar ones below are sketchily
* guessed to fix #2885. I think maybe that problems occur
* because with gtk_rc_get_style (to quote its docs) "no
* refcount is added to the returned style". So I've switched
* this to use Glib::wrap with take_copy == true, which requires
* all the nasty casts and calls to plain-old-C GTK.
*
* At worst I think this causes a memory leak; at least it appears
* to fix the bug.
*
* I could be wrong about any or all of the above.
*/
fatal_style = new Glib::RefPtr<Style> (Glib::wrap (gtk_rc_get_style (reinterpret_cast<GtkWidget*> (fatal_widget.gobj())), true));
fatal_ptag->property_font_desc().set_value((*fatal_style)->get_font());
fatal_ptag->property_foreground_gdk().set_value((*fatal_style)->get_fg(STATE_ACTIVE));
fatal_ptag->property_background_gdk().set_value((*fatal_style)->get_bg(STATE_ACTIVE));
fatal_mtag->property_font_desc().set_value((*fatal_style)->get_font());
fatal_mtag->property_foreground_gdk().set_value((*fatal_style)->get_fg(STATE_NORMAL));
fatal_mtag->property_background_gdk().set_value((*fatal_style)->get_bg(STATE_NORMAL));
error_widget.set_name ("ErrorMessage");
delete error_style;
error_style = new Glib::RefPtr<Style> (Glib::wrap (gtk_rc_get_style (reinterpret_cast<GtkWidget*> (error_widget.gobj())), true));
error_ptag->property_font_desc().set_value((*error_style)->get_font());
error_ptag->property_foreground_gdk().set_value((*error_style)->get_fg(STATE_ACTIVE));
error_ptag->property_background_gdk().set_value((*error_style)->get_bg(STATE_ACTIVE));
error_mtag->property_font_desc().set_value((*error_style)->get_font());
error_mtag->property_foreground_gdk().set_value((*error_style)->get_fg(STATE_NORMAL));
error_mtag->property_background_gdk().set_value((*error_style)->get_bg(STATE_NORMAL));
warning_widget.set_name ("WarningMessage");
delete warning_style;
warning_style = new Glib::RefPtr<Style> (Glib::wrap (gtk_rc_get_style (reinterpret_cast<GtkWidget*> (warning_widget.gobj())), true));
warning_ptag->property_font_desc().set_value((*warning_style)->get_font());
warning_ptag->property_foreground_gdk().set_value((*warning_style)->get_fg(STATE_ACTIVE));
warning_ptag->property_background_gdk().set_value((*warning_style)->get_bg(STATE_ACTIVE));
warning_mtag->property_font_desc().set_value((*warning_style)->get_font());
warning_mtag->property_foreground_gdk().set_value((*warning_style)->get_fg(STATE_NORMAL));
warning_mtag->property_background_gdk().set_value((*warning_style)->get_bg(STATE_NORMAL));
info_widget.set_name ("InfoMessage");
delete info_style;
info_style = new Glib::RefPtr<Style> (Glib::wrap (gtk_rc_get_style (reinterpret_cast<GtkWidget*> (info_widget.gobj())), true));
info_ptag->property_font_desc().set_value((*info_style)->get_font());
info_ptag->property_foreground_gdk().set_value((*info_style)->get_fg(STATE_ACTIVE));
info_ptag->property_background_gdk().set_value((*info_style)->get_bg(STATE_ACTIVE));
info_mtag->property_font_desc().set_value((*info_style)->get_font());
info_mtag->property_foreground_gdk().set_value((*info_style)->get_fg(STATE_NORMAL));
info_mtag->property_background_gdk().set_value((*info_style)->get_bg(STATE_NORMAL));
return 0;
}
void
UI::run (Receiver &old_receiver)
{
_receiver.listen_to (error);
_receiver.listen_to (info);
_receiver.listen_to (warning);
_receiver.listen_to (fatal);
/* stop the old receiver (text/console) once we hit the first idle */
Glib::signal_idle().connect (bind_return (mem_fun (old_receiver, &Receiver::hangup), false));
if (starting ()) {
return;
}
_active = true;
theMain->run ();
_active = false;
return;
}
bool
UI::running ()
{
return _active;
}
void
UI::quit ()
{
UIRequest *req = get_request (Quit);
if (req == 0) {
return;
}
send_request (req);
}
static bool idle_quit ()
{
Main::quit ();
return true;
}
void
UI::do_quit ()
{
if (getenv ("ARDOUR_RUNNING_UNDER_VALGRIND")) {
Main::quit ();
} else {
Glib::signal_idle().connect (sigc::ptr_fun (idle_quit));
}
}
void
UI::touch_display (Touchable *display)
{
UIRequest *req = get_request (TouchDisplay);
if (req == 0) {
return;
}
req->display = display;
send_request (req);
}
void
UI::set_tip (Widget &w, const gchar *tip)
{
set_tip(&w, tip, "");
}
void
UI::set_tip (Widget &w, const std::string& tip)
{
set_tip(&w, tip.c_str(), "");
}
void
UI::set_tip (Widget *w, const gchar *tip, const gchar *hlp)
{
UIRequest *req = get_request (SetTip);
std::string msg(tip);
Glib::RefPtr<Gtk::Action> action = w->get_action();
if (!action) {
Gtkmm2ext::Activatable* activatable;
if ((activatable = dynamic_cast<Gtkmm2ext::Activatable*>(w))) {
action = activatable->get_related_action();
}
}
if (action) {
Gtk::AccelKey key;
ustring ap = action->get_accel_path();
if (!ap.empty()) {
string shortcut = ActionManager::get_key_representation (ap, key);
if (!shortcut.empty()) {
replace_all (shortcut, "<", "");
replace_all (shortcut, ">", "-");
msg.append(_("\n\nShortcut: ")).append (shortcut);
}
}
}
if (req == 0) {
return;
}
req->widget = w;
req->msg = msg.c_str();
req->msg2 = hlp;
send_request (req);
}
void
UI::set_state (Widget *w, StateType state)
{
UIRequest *req = get_request (StateChange);
if (req == 0) {
return;
}
req->new_state = state;
req->widget = w;
send_request (req);
}
void
UI::idle_add (int (*func)(void *), void *arg)
{
UIRequest *req = get_request (AddIdle);
if (req == 0) {
return;
}
req->function = func;
req->arg = arg;
send_request (req);
}
/* END abstract_ui interfaces */
/** Create a PBD::EventLoop::InvalidationRecord and attach a callback
* to a given sigc::trackable so that PBD::EventLoop::invalidate_request
* is called when that trackable is destroyed.
*/
PBD::EventLoop::InvalidationRecord*
__invalidator (sigc::trackable& trackable, const char* file, int line)
{
PBD::EventLoop::InvalidationRecord* ir = new PBD::EventLoop::InvalidationRecord;
ir->file = file;
ir->line = line;
trackable.add_destroy_notify_callback (ir, PBD::EventLoop::invalidate_request);
return ir;
}
void
UI::do_request (UIRequest* req)
{
if (req->type == ErrorMessage) {
process_error_message (req->chn, req->msg);
free (const_cast<char*>(req->msg)); /* it was strdup'ed */
req->msg = 0; /* don't free it again in the destructor */
} else if (req->type == Quit) {
do_quit ();
} else if (req->type == CallSlot) {
#ifndef NDEBUG
if (getenv ("DEBUG_THREADED_SIGNALS")) {
cerr << "call slot for " << name() << endl;
}
#endif
req->the_slot ();
} else if (req->type == TouchDisplay) {
req->display->touch ();
if (req->display->delete_after_touch()) {
delete req->display;
}
} else if (req->type == StateChange) {
req->widget->set_state (req->new_state);
} else if (req->type == SetTip) {
gtk_widget_set_tooltip_markup (req->widget->gobj(), req->msg);
} else {
error << "GtkUI: unknown request type "
<< (int) req->type
<< endmsg;
}
}
/*======================================================================
Error Display
======================================================================*/
void
UI::receive (Transmitter::Channel chn, const char *str)
{
if (caller_is_ui_thread()) {
process_error_message (chn, str);
} else {
UIRequest* req = get_request (ErrorMessage);
if (req == 0) {
return;
}
req->chn = chn;
req->msg = strdup (str);
send_request (req);
}
}
#define OLD_STYLE_ERRORS 1
void
UI::process_error_message (Transmitter::Channel chn, const char *str)
{
RefPtr<Style> style;
RefPtr<TextBuffer::Tag> ptag;
RefPtr<TextBuffer::Tag> mtag;
const char *prefix;
size_t prefix_len;
bool fatal_received = false;
#ifndef OLD_STYLE_ERRORS
PopUp* popup = new PopUp (WIN_POS_CENTER, 0, true);
#endif
switch (chn) {
case Transmitter::Fatal:
prefix = "[FATAL]: ";
ptag = fatal_ptag;
mtag = fatal_mtag;
prefix_len = 9;
fatal_received = true;
break;
case Transmitter::Error:
#if OLD_STYLE_ERRORS
prefix = "[ERROR]: ";
ptag = error_ptag;
mtag = error_mtag;
prefix_len = 9;
#else
popup->set_name ("ErrorMessage");
popup->set_text (str);
popup->touch ();
return;
#endif
break;
case Transmitter::Info:
#if OLD_STYLE_ERRORS
prefix = "[INFO]: ";
ptag = info_ptag;
mtag = info_mtag;
prefix_len = 8;
#else
popup->set_name ("InfoMessage");
popup->set_text (str);
popup->touch ();
return;
#endif
break;
case Transmitter::Warning:
#if OLD_STYLE_ERRORS
prefix = "[WARNING]: ";
ptag = warning_ptag;
mtag = warning_mtag;
prefix_len = 11;
#else
popup->set_name ("WarningMessage");
popup->set_text (str);
popup->touch ();
return;
#endif
break;
default:
/* no choice but to use text/console output here */
cerr << "programmer error in UI::check_error_messages (channel = " << chn << ")\n";
::exit (1);
}
errors->text().get_buffer()->begin_user_action();
if (fatal_received) {
handle_fatal (str);
} else {
if (!ptag || !mtag) {
/* oops, message sent before we set up tags - don't crash */
cerr << prefix << str << endl;
} else {
display_message (prefix, prefix_len, ptag, mtag, str);
if (!errors->is_visible() && chn != Transmitter::Info) {
show_errors ();
}
}
}
errors->text().get_buffer()->end_user_action();
}
void
UI::show_errors ()
{
Glib::RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("toggle-log-window"));
if (!act) {
return;
}
Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (act);
if (tact) {
tact->set_active ();
}
}
void
UI::toggle_errors ()
{
Glib::RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("toggle-log-window"));
if (!act) {
return;
}
Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (act);
if (tact->get_active()) {
errors->set_position (WIN_POS_MOUSE);
errors->show ();
} else {
errors->hide ();
}
}
void
UI::display_message (const char *prefix, gint /*prefix_len*/, RefPtr<TextBuffer::Tag> ptag, RefPtr<TextBuffer::Tag> mtag, const char *msg)
{
RefPtr<TextBuffer> buffer (errors->text().get_buffer());
buffer->insert_with_tag(buffer->end(), prefix, ptag);
buffer->insert_with_tag(buffer->end(), msg, mtag);
buffer->insert_with_tag(buffer->end(), "\n", mtag);
errors->scroll_to_bottom ();
}
void
UI::handle_fatal (const char *message)
{
Dialog win;
Label label (message);
Button quit (_("Press To Exit"));
HBox hpacker;
win.set_default_size (400, 100);
WindowTitle title(Glib::get_application_name());
title += ": Fatal Error";
win.set_title (title.get_string());
win.set_position (WIN_POS_MOUSE);
win.set_border_width (12);
win.get_vbox()->pack_start (label, true, true);
hpacker.pack_start (quit, true, false);
win.get_vbox()->pack_start (hpacker, false, false);
quit.signal_clicked().connect(mem_fun(*this,&UI::quit));
win.show_all ();
win.set_modal (true);
theMain->run ();
_exit (1);
}
void
UI::popup_error (const string& text)
{
if (!caller_is_ui_thread()) {
error << "non-UI threads can't use UI::popup_error"
<< endmsg;
return;
}
MessageDialog msg (text);
msg.set_title (string_compose (_("I'm sorry %1, I can't do that"), g_get_user_name()));
msg.set_wmclass (X_("error"), name());
msg.set_position (WIN_POS_MOUSE);
msg.run ();
}
void
UI::flush_pending ()
{
if (!caller_is_ui_thread()) {
error << "non-UI threads cannot call UI::flush_pending()"
<< endmsg;
return;
}
gtk_main_iteration();
while (gtk_events_pending()) {
gtk_main_iteration();
}
}
bool
UI::just_hide_it (GdkEventAny* /*ev*/, Window *win)
{
win->hide ();
return true;
}
Gdk::Color
UI::get_color (const string& prompt, bool& picked, const Gdk::Color* initial)
{
Gdk::Color color;
ColorSelectionDialog color_dialog (prompt);
color_dialog.set_modal (true);
color_dialog.get_cancel_button()->signal_clicked().connect (bind (mem_fun (*this, &UI::color_selection_done), false));
color_dialog.get_ok_button()->signal_clicked().connect (bind (mem_fun (*this, &UI::color_selection_done), true));
color_dialog.signal_delete_event().connect (mem_fun (*this, &UI::color_selection_deleted));
if (initial) {
color_dialog.get_colorsel()->set_current_color (*initial);
}
color_dialog.show_all ();
color_picked = false;
picked = false;
Main::run();
color_dialog.hide_all ();
if (color_picked) {
Gdk::Color f_rgba = color_dialog.get_colorsel()->get_current_color ();
color.set_red(f_rgba.get_red());
color.set_green(f_rgba.get_green());
color.set_blue(f_rgba.get_blue());
picked = true;
}
return color;
}
void
UI::color_selection_done (bool status)
{
color_picked = status;
Main::quit ();
}
bool
UI::color_selection_deleted (GdkEventAny* /*ev*/)
{
Main::quit ();
return true;
}
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