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celestia/src/celestia/gtk/main.cpp

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/*
* Celestia GTK+ Front-End
* Copyright (C) 2005 Pat Suwalski <pat@suwalski.net>
*
* 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.
*
* $Id: main.cpp,v 1.9 2008-01-21 04:55:19 suwalski Exp $
*/
#include <config.h>
#include <iostream>
#include <fstream>
#include <cstdlib>
#include <cctype>
#include <cstring>
#include <ctime>
#ifdef WIN32
#include <direct.h>
#else
#include <unistd.h>
#endif /* WIN32 */
#include <gtk/gtk.h>
#ifdef GTKGLEXT
#include <gtk/gtkgl.h>
#else
#include "gtkegl.h"
#endif
#include <celengine/astro.h>
#include <celengine/galaxy.h>
#include <celengine/glsupport.h>
#include <celengine/simulation.h>
#include <celestia/celestiacore.h>
#include <celutil/gettext.h>
/* Includes for the GNOME front-end */
#ifdef GNOME
#include <gnome.h>
#include <libgnomeui/libgnomeui.h>
#include <gconf/gconf-client.h>
#endif /* GNOME */
/* Includes for the GTK front-end */
#include "common.h"
#include "glwidget.h"
#include "menu-context.h"
#include "splash.h"
#include "ui.h"
/* Includes for the settings interface */
#ifdef GNOME
#include "settings-gconf.h"
#else
#include "settings-file.h"
#endif /* GNOME */
#ifndef DEBUG
#define G_DISABLE_ASSERT
#endif /* DEBUG */
using namespace celestia;
using namespace std;
/* Function Definitions */
static void createMainMenu(GtkWidget* window, AppData* app);
static void initRealize(GtkWidget* widget, AppData* app);
/* Command-Line Options */
static gchar* configFile = NULL;
static gchar* installDir = NULL;
static gchar** extrasDir = NULL;
static gboolean fullScreen = FALSE;
static gboolean noSplash = FALSE;
/* Command-Line Options specification */
static GOptionEntry optionEntries[] =
{
{ "conf", 'c', 0, G_OPTION_ARG_FILENAME, &configFile, "Alternate configuration file", "file" },
{ "dir", 'd', 0, G_OPTION_ARG_FILENAME, &installDir, "Alternate installation directory", "directory" },
{ "extrasdir", 'e', 0, G_OPTION_ARG_FILENAME_ARRAY, &extrasDir, "Additional \"extras\" directory", "directory" },
{ "fullscreen", 'f', 0, G_OPTION_ARG_NONE, &fullScreen, "Start full-screen", NULL },
{ "nosplash", 's', 0, G_OPTION_ARG_NONE, &noSplash, "Disable splash screen", NULL },
{ NULL, '\0', 0, G_OPTION_ARG_NONE, NULL, NULL, NULL }
};
/* Initializes GtkActions and creates main menu */
static void createMainMenu(GtkWidget* window, AppData* app)
{
GtkUIManager *ui_manager;
GtkAccelGroup *accel_group;
GError *error;
app->agMain = gtk_action_group_new ("MenuActions");
app->agRender = gtk_action_group_new("RenderActions");
app->agLabel = gtk_action_group_new("LabelActions");
app->agOrbit = gtk_action_group_new("OrbitActions");
app->agVerbosity = gtk_action_group_new("VerbosityActions");
app->agStarStyle = gtk_action_group_new("StarStyleActions");
app->agAmbient = gtk_action_group_new("AmbientActions");
/* All actions have the AppData structure passed */
gtk_action_group_add_actions(app->agMain, actionsPlain, G_N_ELEMENTS(actionsPlain), app);
gtk_action_group_add_toggle_actions(app->agMain, actionsToggle, G_N_ELEMENTS(actionsToggle), app);
gtk_action_group_add_radio_actions(app->agVerbosity, actionsVerbosity, G_N_ELEMENTS(actionsVerbosity), 0, G_CALLBACK(actionVerbosity), app);
gtk_action_group_add_radio_actions(app->agStarStyle, actionsStarStyle, G_N_ELEMENTS(actionsStarStyle), 0, G_CALLBACK(actionStarStyle), app);
gtk_action_group_add_radio_actions(app->agAmbient, actionsAmbientLight, G_N_ELEMENTS(actionsAmbientLight), 0, G_CALLBACK(actionAmbientLight), app);
gtk_action_group_add_toggle_actions(app->agRender, actionsRenderFlags, G_N_ELEMENTS(actionsRenderFlags), app);
gtk_action_group_add_toggle_actions(app->agLabel, actionsLabelFlags, G_N_ELEMENTS(actionsLabelFlags), app);
gtk_action_group_add_toggle_actions(app->agOrbit, actionsOrbitFlags, G_N_ELEMENTS(actionsOrbitFlags), app);
ui_manager = gtk_ui_manager_new();
gtk_ui_manager_insert_action_group(ui_manager, app->agMain, 0);
gtk_ui_manager_insert_action_group(ui_manager, app->agRender, 0);
gtk_ui_manager_insert_action_group(ui_manager, app->agLabel, 0);
gtk_ui_manager_insert_action_group(ui_manager, app->agOrbit, 0);
gtk_ui_manager_insert_action_group(ui_manager, app->agStarStyle, 0);
gtk_ui_manager_insert_action_group(ui_manager, app->agAmbient, 0);
gtk_ui_manager_insert_action_group(ui_manager, app->agVerbosity, 0);
accel_group = gtk_ui_manager_get_accel_group(ui_manager);
gtk_window_add_accel_group(GTK_WINDOW (window), accel_group);
error = NULL;
if (!gtk_ui_manager_add_ui_from_file(ui_manager, "celestiaui.xml", &error))
{
g_message("Building menus failed: %s", error->message);
g_error_free(error);
exit(EXIT_FAILURE);
}
app->mainMenu = gtk_ui_manager_get_widget(ui_manager, "/MainMenu");
}
/* Our own watcher. Celestiacore will call notifyChange() to tell us
* we need to recheck the check menu items and option buttons. */
class GtkWatcher : public CelestiaWatcher
{
public:
GtkWatcher(CelestiaCore*, AppData*);
virtual void notifyChange(CelestiaCore*, int);
private:
AppData* app;
};
GtkWatcher::GtkWatcher(CelestiaCore* _appCore, AppData* _app) :
CelestiaWatcher(*_appCore), app(_app)
{
}
void GtkWatcher::notifyChange(CelestiaCore*, int property)
{
if (property & CelestiaCore::LabelFlagsChanged)
resyncLabelActions(app);
else if (property & CelestiaCore::RenderFlagsChanged)
{
resyncRenderActions(app);
resyncOrbitActions(app);
resyncStarStyleActions(app);
resyncTextureResolutionActions(app);
}
else if (property & CelestiaCore::VerbosityLevelChanged)
resyncVerbosityActions(app);
else if (property & CelestiaCore::TimeZoneChanged)
resyncTimeZoneAction(app);
else if (property & CelestiaCore::AmbientLightChanged)
resyncAmbientActions(app);
/*
else if (property & CelestiaCore::FaintestChanged) DEPRECATED?
else if (property & CelestiaCore::HistoryChanged)
*/
else if (property == CelestiaCore::TextEnterModeChanged)
{
if (app->core->getTextEnterMode() != 0)
{
/* Grey-out the menu */
gtk_widget_set_sensitive(app->mainMenu, FALSE);
/* Disable any actions that will interfere in typing and
autocomplete */
gtk_action_group_set_sensitive(app->agMain, FALSE);
gtk_action_group_set_sensitive(app->agRender, FALSE);
gtk_action_group_set_sensitive(app->agLabel, FALSE);
}
else
{
/* Set the menu normal */
gtk_widget_set_sensitive(app->mainMenu, TRUE);
/* Re-enable action groups */
gtk_action_group_set_sensitive(app->agMain, TRUE);
gtk_action_group_set_sensitive(app->agRender, TRUE);
gtk_action_group_set_sensitive(app->agLabel, TRUE);
}
}
else if (property & CelestiaCore::GalaxyLightGainChanged)
resyncGalaxyGainActions(app);
}
/* END Watcher */
class GtkAlerter : public CelestiaCore::Alerter
{
private:
AppData* app;
public:
GtkAlerter() = delete;
GtkAlerter(AppData* _app) : app(_app) {};
~GtkAlerter() = default;
GtkAlerter(const GtkAlerter&) = delete;
GtkAlerter(GtkAlerter&&) = delete;
GtkAlerter& operator=(const GtkAlerter&) = delete;
GtkAlerter& operator=(GtkAlerter&&) = delete;
void fatalError(const std::string& errorMsg)
{
GtkWidget* errBox = gtk_message_dialog_new(GTK_WINDOW(app->mainWindow),
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_OK, "%s",
errorMsg.c_str());
gtk_dialog_run(GTK_DIALOG(errBox));
gtk_widget_destroy(errBox);
}
};
/* CALLBACK: Event "realize" on the main GL area. Things that go here are those
* that require the glArea to be set up. */
static void initRealize(GtkWidget* widget, AppData* app)
{
#ifdef GL_ES
constexpr int reqVersion = gl::GLES_2;
#else
constexpr int reqVersion = gl::GL_2_1;
#endif
bool ok = gl::init(app->core->getConfig()->ignoreGLExtensions) && gl::checkVersion(reqVersion);
if (!ok)
{
GtkWidget *message;
message = gtk_message_dialog_new(GTK_WINDOW(app->mainWindow),
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
"Celestia was unable to initialize OpenGL");
gtk_dialog_run(GTK_DIALOG(message));
gtk_widget_destroy(message);
exit(1);
}
app->core->setAlerter(new GtkAlerter(app));
if (!app->core->initRenderer())
{
cerr << "Failed to initialize renderer.\n";
}
/* Read/Apply Settings */
#ifdef GNOME
applySettingsGConfMain(app, app->client);
#else
applySettingsFileMain(app, app->settingsFile);
#endif /* GNOME */
/* Synchronize all actions with core settings */
resyncLabelActions(app);
resyncRenderActions(app);
resyncOrbitActions(app);
resyncVerbosityActions(app);
resyncAmbientActions(app);
resyncStarStyleActions(app);
/* If full-screen at startup, make it so. */
if (app->fullScreen)
gtk_toggle_action_set_active(GTK_TOGGLE_ACTION(gtk_action_group_get_action(app->agMain, "FullScreen")), TRUE);
/* If URL at startup, make it so. */
if (app->startURL != NULL)
app->core->setStartURL(app->startURL);
/* Set simulation time */
app->core->start();
updateTimeZone(app, app->showLocalTime);
/* Setting time zone name not very useful, but makes space for "LT" status in
* the top-right corner. Set to some default. */
app->core->setTimeZoneName("UTC");
/* Set the cursor to a crosshair */
gdk_window_set_cursor(gtk_widget_get_window(widget), gdk_cursor_new(GDK_CROSSHAIR));
}
/* MAIN */
int main(int argc, char* argv[])
{
/* Force number displays into C locale. */
setlocale(LC_NUMERIC, "C");
setlocale(LC_ALL, "");
#ifndef WIN32
bindtextdomain(PACKAGE, LOCALEDIR);
bind_textdomain_codeset(PACKAGE, "UTF-8");
textdomain(PACKAGE);
#endif /* WIN32 */
/* Initialize the structure that holds the application's vitals. */
AppData* app = g_new0(AppData, 1);
/* Not ready to render yet. */
app->bReady = FALSE;
/* Initialize variables in the AppData structure. */
app->lastX = 0;
app->lastY = 0;
app->showLocalTime = FALSE;
app->fullScreen = FALSE;
app->startURL = NULL;
/* Watcher enables sending signals from inside of core */
GtkWatcher* gtkWatcher;
/* Command line option parsing */
GError *error = NULL;
GOptionContext* context = g_option_context_new("");
g_option_context_add_main_entries(context, optionEntries, NULL);
g_option_context_add_group(context, gtk_get_option_group(TRUE));
g_option_context_parse(context, &argc, &argv, &error);
if (error != NULL)
{
g_print("Error in command line options. Use --help for full list.\n");
exit(1);
}
/* At this point, the argument count should be 1 or 2, with the lastX
* potentially being a cel:// URL. */
/* If there's an argument left, assume it's a URL. This happens here
* because it's after the saved prefs are applied. The appCore gets
* initialized elsewhere. */
if (argc > 1)
app->startURL = argv[argc - 1];
if (installDir == NULL)
installDir = (gchar*)CONFIG_DATA_DIR;
if (chdir(installDir) == -1)
cerr << "Cannot chdir to '" << installDir << "', probably due to improper installation.\n";
#ifdef GNOME
/* GNOME Initialization */
GnomeProgram *program;
program = gnome_program_init("Celestia", VERSION, LIBGNOMEUI_MODULE,
argc, argv, GNOME_PARAM_NONE);
#else
/* GTK-Only Initialization */
gtk_init(&argc, &argv);
#endif
/* Turn on the splash screen */
SplashData* ss = splashStart(app, !noSplash);
splashSetText(ss, "Initializing...");
app->core = new CelestiaCore();
app->renderer = app->core->getRenderer();
g_assert(app->renderer);
/* Parse simulation arguments */
string altConfig;
if (configFile != NULL)
altConfig = string(configFile);
vector<fs::path> configDirs;
if (extrasDir != NULL)
{
/* Add each extrasDir to the vector */
int i = 0;
while (extrasDir[i] != NULL)
{
configDirs.push_back(extrasDir[i]);
i++;
}
}
/* Initialize the simulation */
if (!app->core->initSimulation(altConfig, configDirs, ss->notifier))
return 1;
app->simulation = app->core->getSimulation();
g_assert(app->simulation);
app->renderer->setSolarSystemMaxDistance(app->core->getConfig()->SolarSystemMaxDistance);
app->renderer->setShadowMapSize(app->core->getConfig()->ShadowMapSize);
#ifdef GNOME
/* Create the main window (GNOME) */
app->mainWindow = gnome_app_new("Celestia", "Celestia");
#else
/* Create the main window (GTK) */
app->mainWindow = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(app->mainWindow), "Celestia");
#endif /* GNOME */
/* Set pointer to AppData structure. This is for when a function is in a
* *real* bind to get at this structure. */
g_object_set_data(G_OBJECT(app->mainWindow), "CelestiaData", app);
GtkWidget* mainBox = GTK_WIDGET(gtk_vbox_new(FALSE, 0));
gtk_container_set_border_width(GTK_CONTAINER(mainBox), 0);
g_signal_connect(G_OBJECT(app->mainWindow), "destroy",
G_CALLBACK(actionQuit), app);
#ifdef GTKGLEXT
/* Initialize the OpenGL widget */
gtk_gl_init (&argc, &argv);
/* Configure OpenGL. Try double-buffered visual. */
GdkGLConfig* glconfig = gdk_gl_config_new_by_mode(static_cast<GdkGLConfigMode>
(GDK_GL_MODE_RGB | GDK_GL_MODE_DEPTH | GDK_GL_MODE_DOUBLE));
if (glconfig == NULL)
{
g_print("*** Cannot find the double-buffered visual.\n");
g_print("*** Trying single-buffered visual.\n");
/* Try single-buffered visual */
glconfig = gdk_gl_config_new_by_mode(static_cast<GdkGLConfigMode>
(GDK_GL_MODE_RGB | GDK_GL_MODE_DEPTH));
if (glconfig == NULL)
{
g_print ("*** No appropriate OpenGL-capable visual found.\n");
exit(1);
}
}
#endif
/* Initialize settings system */
#ifdef GNOME
initSettingsGConf(app);
#else
initSettingsFile(app);
#endif /* GNOME */
/* Create area to be used for OpenGL display */
app->glArea = gtk_drawing_area_new();
/* Set OpenGL-capability to the widget. */
#ifdef GTKGLEXT
gtk_widget_set_gl_capability(app->glArea,
glconfig,
NULL,
TRUE,
GDK_GL_RGBA_TYPE);
#else
gtk_widget_set_egl_capability(app->glArea);
#ifdef GL_ES
gtk_egl_drawable_set_require_es(app->glArea, TRUE);
gtk_egl_drawable_set_require_version(app->glArea, 2, 0);
#endif
//gtk_egl_drawable_set_require_stencil_size(app->glArea, 1);
gtk_egl_drawable_set_require_depth_size(app->glArea, 24);
gtk_egl_drawable_set_require_msaa_samples(app->glArea, 8);
gtk_egl_drawable_set_require_rgba_sizes(app->glArea, 8, 8, 8, 8);
#endif
gtk_widget_set_events(GTK_WIDGET(app->glArea),
GDK_EXPOSURE_MASK |
GDK_KEY_PRESS_MASK |
GDK_KEY_RELEASE_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_SCROLL_MASK |
GDK_POINTER_MOTION_MASK);
/* Load settings the can be applied before the simulation is initialized */
#ifdef GNOME
applySettingsGConfPre(app, app->client);
#else
applySettingsFilePre(app, app->settingsFile);
#endif /* GNOME */
/* Full-Screen option from the command line (overrides above). */
if (fullScreen)
app->fullScreen = TRUE;
/* Initialize handlers to all events in the glArea */
initGLCallbacks(app);
/* Handler than completes initialization when the glArea is realized */
g_signal_connect(G_OBJECT(app->glArea), "realize",
G_CALLBACK(initRealize), app);
/* Create the main menu bar */
createMainMenu(app->mainWindow, app);
/* Initialize the context menu handler */
GTKContextMenuHandler *handler = new GTKContextMenuHandler(app);
/* Set context menu handler for the core */
app->core->setContextMenuHandler(handler);
#ifdef GNOME
/* Set window contents (GNOME) */
gnome_app_set_contents((GnomeApp *)app->mainWindow, GTK_WIDGET(mainBox));
#else
/* Set window contents (GTK) */
gtk_container_add(GTK_CONTAINER(app->mainWindow), GTK_WIDGET(mainBox));
#endif /* GNOME */
gtk_box_pack_start(GTK_BOX(mainBox), app->mainMenu, FALSE, TRUE, 0);
gtk_box_pack_start(GTK_BOX(mainBox), app->glArea, TRUE, TRUE, 0);
gtk_window_set_default_icon_from_file("celestia-logo.png", NULL);
/* Set focus to glArea widget */
gtk_widget_set_can_focus(GTK_WIDGET(app->glArea), true);
gtk_widget_grab_focus(GTK_WIDGET(app->glArea));
/* Initialize the Watcher */
gtkWatcher = new GtkWatcher(app->core, app);
/* Unload the splash screen */
splashEnd(ss);
gtk_widget_show_all(app->mainWindow);
/* HACK: Now that window is drawn, set minimum window size */
gtk_widget_set_size_request(app->glArea, 320, 240);
#ifdef GNOME
initSettingsGConfNotifiers(app);
#endif /* GNOME */
/* Set the ready flag */
app->bReady = TRUE;
/* Call Main GTK Loop */
gtk_main();
g_free(app);
return 0;
}
#ifdef WIN32
int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
return main(__argc, __argv);
}
#endif /* WIN32 */
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