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dialogs.cpp

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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.
 *
 * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-13-1/engines/dialogs.cpp $
 * $Id: dialogs.cpp 36284 2009-02-12 22:02:09Z anotherguest $
 */

#include "base/version.h"

#include "common/config-manager.h"
#include "common/savefile.h"
#include "common/system.h"
#include "common/events.h"

#include "graphics/scaler.h"

#include "gui/about.h"
#include "gui/GuiManager.h"
#include "gui/launcher.h"
#include "gui/ListWidget.h"
#include "gui/ThemeEval.h"
#include "gui/saveload.h"

#include "engines/dialogs.h"
#include "engines/engine.h"
#include "engines/metaengine.h"

#ifdef SMALL_SCREEN_DEVICE
#include "gui/KeysDialog.h"
#endif

using GUI::CommandSender;
using GUI::StaticTextWidget;
using GUI::kCloseCmd;
using GUI::WIDGET_ENABLED;

typedef GUI::OptionsDialog GUI_OptionsDialog;
typedef GUI::Dialog GUI_Dialog;

enum {
      kSaveCmd = 'SAVE',
      kLoadCmd = 'LOAD',
      kPlayCmd = 'PLAY',
      kOptionsCmd = 'OPTN',
      kHelpCmd = 'HELP',
      kAboutCmd = 'ABOU',
      kQuitCmd = 'QUIT',
      kRTLCmd = 'RTL ',
      kChooseCmd = 'CHOS'
};

MainMenuDialog::MainMenuDialog(Engine *engine)
      : GUI::Dialog("GlobalMenu"), _engine(engine) {
      _backgroundType = GUI::ThemeEngine::kDialogBackgroundSpecial;

#ifndef DISABLE_FANCY_THEMES
      _logo = 0;
      if (g_gui.xmlEval()->getVar("Globals.ShowGlobalMenuLogo", 0) == 1 && g_gui.theme()->supportsImages()) {
            _logo = new GUI::GraphicsWidget(this, "GlobalMenu.Logo");
            _logo->useThemeTransparency(true);
            _logo->setGfx(g_gui.theme()->getImageSurface(GUI::ThemeEngine::kImageLogoSmall));
      } else {
            StaticTextWidget *title = new StaticTextWidget(this, "GlobalMenu.Title", "ScummVM");
            title->setAlign(Graphics::kTextAlignCenter);
      }
#else
      StaticTextWidget *title = new StaticTextWidget(this, "GlobalMenu.Title", "ScummVM");
      title->setAlign(Graphics::kTextAlignCenter);
#endif

      StaticTextWidget *version = new StaticTextWidget(this, "GlobalMenu.Version", gScummVMVersionDate);
      version->setAlign(Graphics::kTextAlignCenter);

      new GUI::ButtonWidget(this, "GlobalMenu.Resume", "Resume", kPlayCmd, 'P');

      _loadButton = new GUI::ButtonWidget(this, "GlobalMenu.Load", "Load", kLoadCmd, 'L');
      // TODO: setEnabled -> setVisible
      _loadButton->setEnabled(_engine->hasFeature(Engine::kSupportsLoadingDuringRuntime));

      _saveButton = new GUI::ButtonWidget(this, "GlobalMenu.Save", "Save", kSaveCmd, 'S');
      // TODO: setEnabled -> setVisible
      _saveButton->setEnabled(_engine->hasFeature(Engine::kSupportsSavingDuringRuntime));

      new GUI::ButtonWidget(this, "GlobalMenu.Options", "Options", kOptionsCmd, 'O');

      new GUI::ButtonWidget(this, "GlobalMenu.About", "About", kAboutCmd, 'A');

      _rtlButton = new GUI::ButtonWidget(this, "GlobalMenu.RTL", "Return to Launcher", kRTLCmd, 'R');
      _rtlButton->setEnabled(_engine->hasFeature(Engine::kSupportsRTL));


      new GUI::ButtonWidget(this, "GlobalMenu.Quit", "Quit", kQuitCmd, 'Q');

      _aboutDialog = new GUI::AboutDialog();
      _optionsDialog = new ConfigDialog(_engine->hasFeature(Engine::kSupportsSubtitleOptions));
      _loadDialog = new GUI::SaveLoadChooser("Load game:", "Load");
      _loadDialog->setSaveMode(false);
      _saveDialog = new GUI::SaveLoadChooser("Save game:", "Save");
      _saveDialog->setSaveMode(true);
}

MainMenuDialog::~MainMenuDialog() {
      delete _aboutDialog;
      delete _optionsDialog;
      delete _loadDialog;
      delete _saveDialog;
}

void MainMenuDialog::handleCommand(CommandSender *sender, uint32 cmd, uint32 data) {
      switch (cmd) {
      case kPlayCmd:
            close();
            break;
      case kLoadCmd:
            {
            Common::String gameId = ConfMan.get("gameid");

            const EnginePlugin *plugin = 0;
            EngineMan.findGame(gameId, &plugin);

            int slot = _loadDialog->runModal(plugin, ConfMan.getActiveDomainName());

            if (slot >= 0) {
                  // FIXME: For now we just ignore the return
                  // value, which is quite bad since it could
                  // be a fatal loading error, which renders
                  // the engine unusable.
                  _engine->loadGameState(slot);
                  close();
            }

            }
            break;
      case kSaveCmd:
            {
            Common::String gameId = ConfMan.get("gameid");

            const EnginePlugin *plugin = 0;
            EngineMan.findGame(gameId, &plugin);

            int slot = _saveDialog->runModal(plugin, ConfMan.getActiveDomainName());

            if (slot >= 0) {
                  Common::String result(_saveDialog->getResultString());
                  if (result.empty()) {
                        // If the user was lazy and entered no save name, come up with a default name.
                        char buf[20];
                        snprintf(buf, 20, "Save %d", slot + 1);
                        _engine->saveGameState(slot, buf);
                  } else {
                        _engine->saveGameState(slot, result.c_str());
                  }

                  close();
            }

            }
            break;
      case kOptionsCmd:
            _optionsDialog->runModal();
            break;
      case kAboutCmd:
            _aboutDialog->runModal();
            break;
      case kRTLCmd: {
            Common::Event eventRTL;
            eventRTL.type = Common::EVENT_RTL;
            g_system->getEventManager()->pushEvent(eventRTL);
            close();
            }
            break;
      case kQuitCmd: {
            Common::Event eventQ;
            eventQ.type = Common::EVENT_QUIT;
            g_system->getEventManager()->pushEvent(eventQ);
            close();
            }
            break;
      default:
            GUI::Dialog::handleCommand(sender, cmd, data);
      }
}

void MainMenuDialog::reflowLayout() {
      if (_engine->hasFeature(Engine::kSupportsLoadingDuringRuntime))
            _loadButton->setEnabled(_engine->canLoadGameStateCurrently());
      if (_engine->hasFeature(Engine::kSupportsSavingDuringRuntime))
            _saveButton->setEnabled(_engine->canSaveGameStateCurrently());

#ifndef DISABLE_FANCY_THEMES
      if (g_gui.xmlEval()->getVar("Globals.ShowGlobalMenuLogo", 0) == 1 && g_gui.theme()->supportsImages()) {
            if (!_logo)
                  _logo = new GUI::GraphicsWidget(this, "GlobalMenu.Logo");
            _logo->useThemeTransparency(true);
            _logo->setGfx(g_gui.theme()->getImageSurface(GUI::ThemeEngine::kImageLogoSmall));

            GUI::StaticTextWidget *title = (StaticTextWidget *)findWidget("GlobalMenu.Title");
            if (title) {
                  removeWidget(title);
                  title->setNext(0);
                  delete title;
            }
      } else {
            GUI::StaticTextWidget *title = (StaticTextWidget *)findWidget("GlobalMenu.Title");
            if (!title) {
                  title = new StaticTextWidget(this, "GlobalMenu.Title", "ScummVM");
                  title->setAlign(Graphics::kTextAlignCenter);
            }

            if (_logo) {
                  removeWidget(_logo);
                  _logo->setNext(0);
                  delete _logo;
                  _logo = 0;
            }
      }
#endif

      Dialog::reflowLayout();
}

enum {
      kOKCmd = 'ok  '
};

enum {
      kKeysCmd = 'KEYS'
};

// FIXME: We use the empty string as domain name here. This tells the
// ConfigManager to use the 'default' domain for all its actions. We do that
// to get as close as possible to editing the 'active' settings.
//
// However, that requires bad & evil hacks in the ConfigManager code,
// and even then still doesn't work quite correctly.
// For example, if the transient domain contains 'false' for the 'fullscreen'
// flag, but the user used a hotkey to switch to windowed mode, then the dialog
// will display the wrong value anyway.
//
// Proposed solution consisting of multiple steps:
// 1) Add special code to the open() code that reads out everything stored
//    in the transient domain that is controlled by this dialog, and updates
//    the dialog accordingly.
// 2) Even more code is added to query the backend for current settings, like
//    the fullscreen mode flag etc., and also updates the dialog accordingly.
// 3) The domain being edited is set to the active game domain.
// 4) If the dialog is closed with the "OK" button, then we remove everything
//    stored in the transient domain (or at least everything corresponding to
//    switches in this dialog.
//    If OTOH the dialog is closed with "Cancel" we do no such thing.
//
// These changes will achieve two things at once: Allow us to get rid of using
//  "" as value for the domain, and in fact provide a somewhat better user
// experience at the same time.
ConfigDialog::ConfigDialog(bool subtitleControls)
      : GUI::OptionsDialog("", "ScummConfig") {

      //
      // Sound controllers
      //

      addVolumeControls(this, "ScummConfig.");

      //
      // Subtitle speed and toggle controllers
      //

      if (subtitleControls) {
            // Global talkspeed range of 0-255
            addSubtitleControls(this, "ScummConfig.", 255);
      }

      //
      // Add the buttons
      //

      new GUI::ButtonWidget(this, "ScummConfig.Ok", "OK", GUI::OptionsDialog::kOKCmd, 'O');
      new GUI::ButtonWidget(this, "ScummConfig.Cancel", "Cancel", kCloseCmd, 'C');

#ifdef SMALL_SCREEN_DEVICE
      new GUI::ButtonWidget(this, "ScummConfig.Keys", "Keys", kKeysCmd, 'K');
#endif
}

ConfigDialog::~ConfigDialog() {
#ifdef SMALL_SCREEN_DEVICE
      delete _keysDialog;
#endif
}

void ConfigDialog::handleCommand(CommandSender *sender, uint32 cmd, uint32 data) {
      switch (cmd) {
      case kKeysCmd:

#ifdef SMALL_SCREEN_DEVICE
      //
      // Create the sub dialog(s)
      //
      _keysDialog = new GUI::KeysDialog();
      _keysDialog->runModal();
      delete _keysDialog;
      _keysDialog = NULL;
#endif
            break;
      default:
            GUI_OptionsDialog::handleCommand (sender, cmd, data);
      }
}


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