interfacewindow.cpp

VLC媒体播放程序

/*****************************************************************************
 * InterfaceWindow.cpp: beos interface
 *****************************************************************************
 * Copyright (C) 1999, 2000, 2001 VideoLAN
 * $Id: InterfaceWindow.cpp,v 1.45 2004/01/26 16:52:31 zorglub Exp $
 *
 * Authors: Jean-Marc Dressler <[e-mail]>
 *          Samuel Hocevar <[e-mail]>
 *          Tony Castley <[e-mail]>
 *          Richard Shepherd <[e-mail]>
 *          Stephan Aßmus <[e-mail]>
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

/* System headers */
#include <kernel/OS.h>
#include <InterfaceKit.h>
#include <AppKit.h>
#include <StorageKit.h>
#include <SupportKit.h>
#include <malloc.h>
#include <scsi.h>
#include <scsiprobe_driver.h>
#include <fs_info.h>
#include <string.h>

/* VLC headers */
#include <vlc/vlc.h>
#include <vlc/aout.h>
#include <vlc/intf.h>

/* BeOS interface headers */
#include "VlcWrapper.h"
#include "MsgVals.h"
#include "MediaControlView.h"
#include "PlayListWindow.h"
#include "PreferencesWindow.h"
#include "MessagesWindow.h"
#include "InterfaceWindow.h"

#define INTERFACE_UPDATE_TIMEOUT 80000 // 2 frames if at 25 fps
#define INTERFACE_LOCKING_TIMEOUT 5000

// make_sure_frame_is_on_screen
bool
make_sure_frame_is_on_screen( BRect& frame )
{
	BScreen screen( B_MAIN_SCREEN_ID );
	if (frame.IsValid() && screen.IsValid()) {
		if (!screen.Frame().Contains(frame)) {
			// make sure frame fits in the screen
			if (frame.Width() > screen.Frame().Width())
				frame.right -= frame.Width() - screen.Frame().Width() + 10.0;
			if (frame.Height() > screen.Frame().Height())
				frame.bottom -= frame.Height() - screen.Frame().Height() + 30.0;
			// frame is now at the most the size of the screen
			if (frame.right > screen.Frame().right)
				frame.OffsetBy(-(frame.right - screen.Frame().right), 0.0);
			if (frame.bottom > screen.Frame().bottom)
				frame.OffsetBy(0.0, -(frame.bottom - screen.Frame().bottom));
			if (frame.left < screen.Frame().left)
				frame.OffsetBy((screen.Frame().left - frame.left), 0.0);
			if (frame.top < screen.Frame().top)
				frame.OffsetBy(0.0, (screen.Frame().top - frame.top));
		}
		return true;
	}
	return false;
}

// make_sure_frame_is_within_limits
void
make_sure_frame_is_within_limits( BRect& frame, float minWidth, float minHeight,
                                  float maxWidth, float maxHeight )
{
    if ( frame.Width() < minWidth )
        frame.right = frame.left + minWidth;
    if ( frame.Height() < minHeight )
        frame.bottom = frame.top + minHeight;
    if ( frame.Width() > maxWidth )
        frame.right = frame.left + maxWidth;
    if ( frame.Height() > maxHeight )
        frame.bottom = frame.top + maxHeight;
}

// get_volume_info
bool
get_volume_info( BVolume& volume, BString& volumeName, bool& isCDROM, BString& deviceName )
{
	bool success = false;
	isCDROM = false;
	deviceName = "";
	volumeName = "";
	char name[B_FILE_NAME_LENGTH];
	if ( volume.GetName( name ) >= B_OK )	// disk is currently mounted
	{
		volumeName = name;
		dev_t dev = volume.Device();
		fs_info info;
		if ( fs_stat_dev( dev, &info ) == B_OK )
		{
			success = true;
			deviceName = info.device_name;
			if ( volume.IsReadOnly() )
			{
				int i_dev = open( info.device_name, O_RDONLY );
				if ( i_dev >= 0 )
				{
					device_geometry g;
					if ( ioctl( i_dev, B_GET_GEOMETRY, &g, sizeof( g ) ) >= 0 )
						isCDROM = ( g.device_type == B_CD );
					close( i_dev );
				}
			}
		}
 	}
 	return success;
}

// collect_folder_contents
void
collect_folder_contents( BDirectory& dir, BList& list, bool& deep, bool& asked, BEntry& entry )
{
	while ( dir.GetNextEntry( &entry, true ) == B_OK )
	{
		if ( !entry.IsDirectory() )
		{
			BPath path;
			// since the directory will give us the entries in reverse order,
			// we put them each at the same index, effectively reversing the
			// items while adding them
			if ( entry.GetPath( &path ) == B_OK )
			{
				BString* string = new BString( path.Path() );
				if ( !list.AddItem( string, 0 ) )
					delete string;	// at least don't leak
			}
		}
		else
		{
			if ( !asked )
			{
				// ask user if we should parse sub-folders as well
				BAlert* alert = new BAlert( "sub-folders?",
											_("Open files from all sub-folders as well?"),
											_("No"), _("Yes"), NULL, B_WIDTH_AS_USUAL,
											B_IDEA_ALERT );
				int32 buttonIndex = alert->Go();
				deep = buttonIndex == 1;
				asked = true;
				// never delete BAlerts!!
			}
			if ( deep )
			{
				BDirectory subDir( &entry );
				if ( subDir.InitCheck() == B_OK )
					collect_folder_contents( subDir, list,
											 deep, asked, entry );
			}
		}
	}
}


/*****************************************************************************
 * InterfaceWindow
 *****************************************************************************/

InterfaceWindow::InterfaceWindow( BRect frame, const char* name,
                                  intf_thread_t* p_interface )
    : BWindow( frame, name, B_TITLED_WINDOW_LOOK, B_NORMAL_WINDOW_FEEL,
               B_NOT_ZOOMABLE | B_WILL_ACCEPT_FIRST_CLICK | B_ASYNCHRONOUS_CONTROLS ),
      p_intf( p_interface ),
      fFilePanel( NULL ),
      fLastUpdateTime( system_time() ),
	  fSettings( new BMessage( 'sett' ) ),
	  p_wrapper( p_intf->p_sys->p_wrapper )
{
    fPlaylistIsEmpty = !( p_wrapper->PlaylistSize() > 0 );
    
    BScreen screen;
    BRect screen_rect = screen.Frame();
    BRect window_rect;
    window_rect.Set( ( screen_rect.right - PREFS_WINDOW_WIDTH ) / 2,
                     ( screen_rect.bottom - PREFS_WINDOW_HEIGHT ) / 2,
                     ( screen_rect.right + PREFS_WINDOW_WIDTH ) / 2,
                     ( screen_rect.bottom + PREFS_WINDOW_HEIGHT ) / 2 );
    fPreferencesWindow = new PreferencesWindow( p_intf, window_rect, _("Preferences") );
    window_rect.Set( screen_rect.right - 500,
                     screen_rect.top + 50,
                     screen_rect.right - 150,
                     screen_rect.top + 250 );
    fPlaylistWindow = new PlayListWindow( window_rect, _("Playlist"), this, p_intf );
    window_rect.Set( screen_rect.right - 550,
                     screen_rect.top + 300,
                     screen_rect.right - 150,
                     screen_rect.top + 500 );
    fMessagesWindow = new MessagesWindow( p_intf, window_rect, _("Messages") );

    // the media control view
    p_mediaControl = new MediaControlView( BRect( 0.0, 0.0, 250.0, 50.0 ),
                                           p_intf );
    p_mediaControl->SetViewColor( ui_color( B_PANEL_BACKGROUND_COLOR ) );

    float width, height;
    p_mediaControl->GetPreferredSize( &width, &height );

    // set up the main menu
    fMenuBar = new BMenuBar( BRect(0.0, 0.0, width, 15.0), "main menu",
                             B_FOLLOW_NONE, B_ITEMS_IN_ROW, false );

    // make menu bar resize to correct height
    float menuWidth, menuHeight;
    fMenuBar->GetPreferredSize( &menuWidth, &menuHeight );
    fMenuBar->ResizeTo( width, menuHeight );    // don't change! it's a workarround!
    // take care of proper size for ourself
    height += fMenuBar->Bounds().Height();
    ResizeTo( width, height );

    p_mediaControl->MoveTo( fMenuBar->Bounds().LeftBottom() + BPoint(0.0, 1.0) );
    AddChild( fMenuBar );
    AddChild( p_mediaControl );

    // Add the file Menu
    BMenu* fileMenu = new BMenu( _("File") );
    fMenuBar->AddItem( fileMenu );
    fileMenu->AddItem( new BMenuItem( _AddEllipsis(_("Open File")),
                                      new BMessage( OPEN_FILE ), 'O') );
    
    fileMenu->AddItem( new CDMenu( _("Open Disc") ) );

    fileMenu->AddItem( new BMenuItem( _AddEllipsis(_("Open Subtitles")),
                                      new BMessage( LOAD_SUBFILE ) ) );

    fileMenu->AddSeparatorItem();
    BMenuItem* item = new BMenuItem( _AddEllipsis(_("About")),
                                     new BMessage( B_ABOUT_REQUESTED ), 'A');
    item->SetTarget( be_app );
    fileMenu->AddItem( item );
    fileMenu->AddItem( new BMenuItem( _("Quit"), new BMessage( B_QUIT_REQUESTED ), 'Q') );

    fLanguageMenu = new LanguageMenu( _("Language"), AUDIO_ES, p_wrapper);
    fSubtitlesMenu = new LanguageMenu( _("Subtitles"), SPU_ES, p_wrapper);

    /* Add the Audio menu */
    fAudioMenu = new BMenu( _("Audio") );
    fMenuBar->AddItem ( fAudioMenu );
    fAudioMenu->AddItem( fLanguageMenu );
    fAudioMenu->AddItem( fSubtitlesMenu );

    fPrevTitleMI = new BMenuItem( _("Prev Title"), new BMessage( PREV_TITLE ) );
    fNextTitleMI = new BMenuItem( _("Next Title"), new BMessage( NEXT_TITLE ) );
    fPrevChapterMI = new BMenuItem( _("Previous chapter"), new BMessage( PREV_CHAPTER ) );
    fNextChapterMI = new BMenuItem( _("Next chapter"), new BMessage( NEXT_CHAPTER ) );
    fGotoMenuMI = new BMenuItem( _("Goto Menu"), new BMessage( NAVIGATE_MENU ) );

    /* Add the Navigation menu */
    fNavigationMenu = new BMenu( _("Navigation") );
    fMenuBar->AddItem( fNavigationMenu );
    fNavigationMenu->AddItem( fGotoMenuMI );
    fNavigationMenu->AddSeparatorItem();
    fNavigationMenu->AddItem( fPrevTitleMI );
    fNavigationMenu->AddItem( fNextTitleMI );
    fNavigationMenu->AddItem( fTitleMenu = new TitleMenu( _("Go to Title"), p_intf ) );
    fNavigationMenu->AddSeparatorItem();
    fNavigationMenu->AddItem( fPrevChapterMI );
    fNavigationMenu->AddItem( fNextChapterMI );
    fNavigationMenu->AddItem( fChapterMenu = new ChapterMenu( _("Go to Chapter"), p_intf ) );

    /* Add the Speed menu */
    fSpeedMenu = new BMenu( _("Speed") );
    fSpeedMenu->SetRadioMode( true );
    fSpeedMenu->AddItem(
        fHeighthMI = new BMenuItem( "1/8x", new BMessage( HEIGHTH_PLAY ) ) );
    fSpeedMenu->AddItem(
        fQuarterMI = new BMenuItem( "1/4x", new BMessage( QUARTER_PLAY ) ) );
    fSpeedMenu->AddItem(
        fHalfMI = new BMenuItem( "1/2x", new BMessage( HALF_PLAY ) ) );
    fSpeedMenu->AddItem(
        fNormalMI = new BMenuItem( "1x", new BMessage( NORMAL_PLAY ) ) );
    fSpeedMenu->AddItem(
        fTwiceMI = new BMenuItem( "2x", new BMessage( TWICE_PLAY ) ) );
    fSpeedMenu->AddItem(
        fFourMI = new BMenuItem( "4x", new BMessage( FOUR_PLAY ) ) );
    fSpeedMenu->AddItem(
        fHeightMI = new BMenuItem( "8x", new BMessage( HEIGHT_PLAY ) ) );
    fMenuBar->AddItem( fSpeedMenu );

    /* Add the Show menu */
    fShowMenu = new BMenu( _("Window") );
    fShowMenu->AddItem( new BMenuItem( _AddEllipsis(_("Playlist")),
                                       new BMessage( OPEN_PLAYLIST ), 'P') );
    fShowMenu->AddItem( new BMenuItem( _AddEllipsis(_("Messages")),
                                       new BMessage( OPEN_MESSAGES ), 'M' ) );
    fShowMenu->AddItem( new BMenuItem( _AddEllipsis(_("Preferences")),
                                       new BMessage( OPEN_PREFERENCES ), 'S' ) );
    fMenuBar->AddItem( fShowMenu );

    /* Prepare fow showing */
    _SetMenusEnabled( false );
    p_mediaControl->SetEnabled( false );

    _RestoreSettings();

    Show();
}

InterfaceWindow::~InterfaceWindow()
{
    if( fPlaylistWindow )
        fPlaylistWindow->ReallyQuit();
    fPlaylistWindow = NULL;
    if( fMessagesWindow )
        fMessagesWindow->ReallyQuit();
    fMessagesWindow = NULL;
    if( fPreferencesWindow )
        fPreferencesWindow->ReallyQuit();
    fPreferencesWindow = NULL;
	delete fFilePanel;
	delete fSettings;
}

/*****************************************************************************
 * InterfaceWindow::FrameResized
 *****************************************************************************/
void
InterfaceWindow::FrameResized(float width, float height)
{
    BRect r(Bounds());
    fMenuBar->MoveTo(r.LeftTop());
    fMenuBar->ResizeTo(r.Width(), fMenuBar->Bounds().Height());
    r.top += fMenuBar->Bounds().Height() + 1.0;
    p_mediaControl->MoveTo(r.LeftTop());
    p_mediaControl->ResizeTo(r.Width(), r.Height());
}

/*****************************************************************************
 * InterfaceWindow::MessageReceived
 *****************************************************************************/
void InterfaceWindow::MessageReceived( BMessage * p_message )
{
    int playback_status;      // remember playback state
    playback_status = p_wrapper->InputStatus();

    switch( p_message->what )
    {
        case B_ABOUT_REQUESTED:
        {
            BAlert* alert = new BAlert( "VLC " PACKAGE_VERSION,
                                        "VLC " PACKAGE_VERSION " for BeOS"
                                        "\n\n<www.videolan.org>", _("OK"));
            alert->Go();
            break;
        }
        case TOGGLE_ON_TOP:
            break;

        case OPEN_FILE:
        	_ShowFilePanel( B_REFS_RECEIVED, _("VLC Media Player: Open Media Files") );
            break;

        case LOAD_SUBFILE:
        	_ShowFilePanel( SUBFILE_RECEIVED, _("VLC Media Player: Open Subtitle File") );
            break;

        case OPEN_PLAYLIST:
            if (fPlaylistWindow->Lock())
            {
                if (fPlaylistWindow->IsHidden())
                    fPlaylistWindow->Show();
                else
                    fPlaylistWindow->Activate();
                fPlaylistWindow->Unlock();
            }
            break;
        case OPEN_DVD:
            {
                const char *psz_device;
                BString type( "dvd" );
                if( p_message->FindString( "device", &psz_device ) == B_OK )
                {
                    BString device( psz_device );
                    p_wrapper->OpenDisc( type, device, 0, 0 );
                }
                _UpdatePlaylist();
            }
            break;

        case SUBFILE_RECEIVED:
        {
            entry_ref ref;
            if( p_message->FindRef( "refs", 0, &ref ) == B_OK )
            {
                BPath path( &ref );
                if ( path.InitCheck() == B_OK )
                    p_wrapper->LoadSubFile( path.Path() );
            }
            break;
        }

        case STOP_PLAYBACK:
            // this currently stops playback not nicely
            if (playback_status > UNDEF_S)
            {
                p_wrapper->PlaylistStop();
                p_mediaControl->SetStatus(UNDEF_S, DEFAULT_RATE);
            }
            break;
    
        case START_PLAYBACK:
            /*  starts playing in normal mode */
    
        case PAUSE_PLAYBACK: