builder.cpp

VLC Player Source Code

/*****************************************************************************
 * builder.cpp
 *****************************************************************************
 * Copyright (C) 2003 the VideoLAN team
 * $Id$
 *
 * Authors: Cyril Deguet     <[e-mail]>
 *          Olivier Teulière <[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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

#include "builder.hpp"
#include "builder_data.hpp"
#include "interpreter.hpp"
#include "skin_parser.hpp"
#include "../src/file_bitmap.hpp"
#include "../src/os_factory.hpp"
#include "../src/generic_bitmap.hpp"
#include "../src/top_window.hpp"
#include "../src/anchor.hpp"
#include "../src/bitmap_font.hpp"
#include "../src/ft2_font.hpp"
#include "../src/ini_file.hpp"
#include "../src/generic_layout.hpp"
#include "../src/popup.hpp"
#include "../src/theme.hpp"
#include "../src/window_manager.hpp"
#include "../commands/cmd_generic.hpp"
#include "../controls/ctrl_button.hpp"
#include "../controls/ctrl_checkbox.hpp"
#include "../controls/ctrl_image.hpp"
#include "../controls/ctrl_list.hpp"
#include "../controls/ctrl_move.hpp"
#include "../controls/ctrl_resize.hpp"
#include "../controls/ctrl_slider.hpp"
#include "../controls/ctrl_radialslider.hpp"
#include "../controls/ctrl_text.hpp"
#include "../controls/ctrl_tree.hpp"
#include "../controls/ctrl_video.hpp"
#include "../utils/bezier.hpp"
#include "../utils/position.hpp"
#include "../utils/var_bool.hpp"
#include "../utils/var_text.hpp"

#include "vlc_image.h"


Builder::Builder( intf_thread_t *pIntf, const BuilderData &rData,
                  const string &rPath ):
    SkinObject( pIntf ), m_rData( rData ), m_path( rPath ), m_pTheme( NULL )
{
    m_pImageHandler = image_HandlerCreate( pIntf );
}

Builder::~Builder()
{
    if( m_pImageHandler ) image_HandlerDelete( m_pImageHandler );
}

CmdGeneric *Builder::parseAction( const string &rAction )
{
    return Interpreter::instance( getIntf() )->parseAction( rAction, m_pTheme );
}


// Useful macro
#define ADD_OBJECTS( type ) \
    list<BuilderData::type>::const_iterator it##type; \
    for( it##type = m_rData.m_list##type.begin(); \
         it##type != m_rData.m_list##type.end(); it##type++ ) \
    { \
        add##type( *it##type ); \
    }


Theme *Builder::build()
{
    m_pTheme = new Theme( getIntf() );
    if( m_pTheme == NULL )
    {
        return NULL;
    }

    // Create everything from the data in the XML
    ADD_OBJECTS( Theme );
    ADD_OBJECTS( IniFile );
    ADD_OBJECTS( Bitmap );
    ADD_OBJECTS( SubBitmap );
    ADD_OBJECTS( BitmapFont );
    ADD_OBJECTS( Font );
    ADD_OBJECTS( Window );
    // XXX: PopupMenus are created after the windows, so that the Win32Factory
    // (at least) can give a valid window handle to the OSPopup objects
    ADD_OBJECTS( PopupMenu );
    ADD_OBJECTS( Layout );
    ADD_OBJECTS( Panel );
    ADD_OBJECTS( Anchor );
    ADD_OBJECTS( Button );
    ADD_OBJECTS( Checkbox );
    ADD_OBJECTS( Image );
    ADD_OBJECTS( Text );
    ADD_OBJECTS( RadialSlider );
    ADD_OBJECTS( Slider );
    ADD_OBJECTS( List );
    ADD_OBJECTS( Tree );
    ADD_OBJECTS( Video );
    // MenuItems must be created after all the rest, so that the IDs of the
    // other elements exist and can be parsed in the actions
    ADD_OBJECTS( MenuItem );
    ADD_OBJECTS( MenuSeparator );

    return m_pTheme;
}


// Macro to get a bitmap by its ID in the builder
#define GET_BMP( pBmp, id ) \
    if( id != "none" ) \
    { \
        pBmp = m_pTheme->getBitmapById(id); \
        if( pBmp == NULL ) \
        { \
            msg_Err( getIntf(), "unknown bitmap id: %s", id.c_str() ); \
            return; \
        } \
    }


// Macro to get the parent box of a control, given the panel ID
#define GET_BOX( pRect, id, pLayout ) \
    if( id == "none" ) \
        pRect = &pLayout->getRect(); \
    else \
    { \
        const Position *pParent = \
            m_pTheme->getPositionById( rData.m_panelId ); \
        if( pParent == NULL ) \
        { \
            msg_Err( getIntf(), "parent panel could not be found: %s", \
                     rData.m_panelId.c_str() ); \
            return; \
        } \
        pRect = pParent; \
    }


void Builder::addTheme( const BuilderData::Theme &rData )
{
    WindowManager &rManager = m_pTheme->getWindowManager();
    rManager.setMagnetValue( rData.m_magnet );
    rManager.setAlphaValue( rData.m_alpha );
    rManager.setMoveAlphaValue( rData.m_moveAlpha );
    GenericFont *pFont = getFont( rData.m_tooltipfont );
    if( pFont )
    {
        rManager.createTooltip( *pFont );
    }
    else
    {
        msg_Warn( getIntf(), "invalid tooltip font: %s",
                  rData.m_tooltipfont.c_str() );
    }
}


void Builder::addIniFile( const BuilderData::IniFile &rData )
{
    // Parse the INI file
    IniFile iniFile( getIntf(), rData.m_id, getFilePath( rData.m_file ) );
    iniFile.parseFile();
}


void Builder::addBitmap( const BuilderData::Bitmap &rData )
{
    GenericBitmap *pBmp =
        new FileBitmap( getIntf(), m_pImageHandler,
                        getFilePath( rData.m_fileName ), rData.m_alphaColor,
                        rData.m_nbFrames, rData.m_fps );
    if( !pBmp->getData() )
    {
        // Invalid bitmap
        delete pBmp;
        return;
    }
    m_pTheme->m_bitmaps[rData.m_id] = GenericBitmapPtr( pBmp );
}


void Builder::addSubBitmap( const BuilderData::SubBitmap &rData )
{
    if( m_pTheme->m_bitmaps.find( rData.m_id ) != m_pTheme->m_bitmaps.end() )
    {
        msg_Dbg( getIntf(), "bitmap %s already exists", rData.m_id.c_str() );
        return;
    }

    // Get the parent bitmap
    GenericBitmap *pParentBmp = NULL;
    GET_BMP( pParentBmp, rData.m_parent );

    // Copy a region of the parent bitmap to the new one
    BitmapImpl *pBmp =
        new BitmapImpl( getIntf(), rData.m_width, rData.m_height,
                        rData.m_nbFrames, rData.m_fps );
    bool res = pBmp->drawBitmap( *pParentBmp, rData.m_x, rData.m_y, 0, 0,
                                 rData.m_width, rData.m_height );
    if( !res )
    {
        // Invalid sub-bitmap
        delete pBmp;
        msg_Warn( getIntf(), "sub-bitmap %s ignored", rData.m_id.c_str() );
        return;
    }
    m_pTheme->m_bitmaps[rData.m_id] = GenericBitmapPtr( pBmp );
}


void Builder::addBitmapFont( const BuilderData::BitmapFont &rData )
{
    if( m_pTheme->m_fonts.find( rData.m_id ) != m_pTheme->m_fonts.end() )
    {
        msg_Dbg( getIntf(), "font %s already exists", rData.m_id.c_str() );
        return;
    }

    GenericBitmap *pBmp =
        new FileBitmap( getIntf(), m_pImageHandler,
                        getFilePath( rData.m_file ), 0 );
    if( !pBmp->getData() )
    {
        // Invalid bitmap
        delete pBmp;
        return;
    }

    m_pTheme->m_bitmaps[rData.m_id] = GenericBitmapPtr( pBmp );

    GenericFont *pFont = new BitmapFont( getIntf(), *pBmp, rData.m_type );
    if( pFont->init() )
    {
        m_pTheme->m_fonts[rData.m_id] = GenericFontPtr( pFont );
    }
    else
    {
        delete pFont;
    }
}


void Builder::addFont( const BuilderData::Font &rData )
{
    // Try to load the font from the theme directory
    GenericFont *pFont = new FT2Font( getIntf(),
                                      getFilePath( rData.m_fontFile ),
                                      rData.m_size );
    if( pFont->init() )
    {
        m_pTheme->m_fonts[rData.m_id] = GenericFontPtr( pFont );
    }
    else
    {
        delete pFont;

        // Font not found; try in the resource path
        OSFactory *pOSFactory = OSFactory::instance( getIntf() );
        const list<string> &resPath = pOSFactory->getResourcePath();
        const string &sep = pOSFactory->getDirSeparator();

        list<string>::const_iterator it;
        for( it = resPath.begin(); it != resPath.end(); it++ )
        {
            string path = (*it) + sep + "fonts" + sep + rData.m_fontFile;
            pFont = new FT2Font( getIntf(), path, rData.m_size );
            if( pFont->init() )
            {
                // Font loaded successfully
                m_pTheme->m_fonts[rData.m_id] = GenericFontPtr( pFont );
                break;
            }
            else
            {
                delete pFont;
            }
        }
    }
}


void Builder::addPopupMenu( const BuilderData::PopupMenu &rData )
{
    Popup *pPopup = new Popup( getIntf(), m_pTheme->getWindowManager() );

    m_pTheme->m_popups[rData.m_id] = PopupPtr( pPopup );
}


void Builder::addMenuItem( const BuilderData::MenuItem &rData )
{
    Popup *pPopup = m_pTheme->getPopupById( rData.m_popupId );
    if( pPopup == NULL )
    {
        msg_Err( getIntf(), "unknown popup id: %s", rData.m_popupId.c_str() );
        return;
    }

    CmdGeneric *pCommand = parseAction( rData.m_action );
    if( pCommand == NULL )
    {
        msg_Err( getIntf(), "invalid action: %s", rData.m_action.c_str() );
        return;
    }

    pPopup->addItem( rData.m_label, *pCommand, rData.m_pos );
}


void Builder::addMenuSeparator( const BuilderData::MenuSeparator &rData )
{
    Popup *pPopup = m_pTheme->getPopupById( rData.m_popupId );
    if( pPopup == NULL )
    {
        msg_Err( getIntf(), "unknown popup id: %s", rData.m_popupId.c_str() );
        return;
    }

    pPopup->addSeparator( rData.m_pos );
}


void Builder::addWindow( const BuilderData::Window &rData )
{
    TopWindow *pWin =
        new TopWindow( getIntf(), rData.m_xPos, rData.m_yPos,
                       m_pTheme->getWindowManager(),
                       rData.m_dragDrop, rData.m_playOnDrop,
                       rData.m_visible );

    m_pTheme->m_windows[rData.m_id] = TopWindowPtr( pWin );
}


void Builder::addLayout( const BuilderData::Layout &rData )
{
    TopWindow *pWin = m_pTheme->getWindowById( rData.m_windowId );
    if( pWin == NULL )
    {
        msg_Err( getIntf(), "unknown window id: %s", rData.m_windowId.c_str() );
        return;
    }

    int minWidth = rData.m_minWidth != -1 ? rData.m_minWidth : rData.m_width;
    int maxWidth = rData.m_maxWidth != -1 ? rData.m_maxWidth : rData.m_width;
    int minHeight = rData.m_minHeight != -1 ? rData.m_minHeight :
                    rData.m_height;
    int maxHeight = rData.m_maxHeight != -1 ? rData.m_maxHeight :
                    rData.m_height;
    GenericLayout *pLayout = new GenericLayout( getIntf(), rData.m_width,
                                                rData.m_height,
                                                minWidth, maxWidth, minHeight,
                                                maxHeight );
    m_pTheme->m_layouts[rData.m_id] = GenericLayoutPtr( pLayout );

    // Attach the layout to its window
    m_pTheme->getWindowManager().addLayout( *pWin, *pLayout );
}


void Builder::addAnchor( const BuilderData::Anchor &rData )
{
    GenericLayout *pLayout = m_pTheme->getLayoutById( rData.m_layoutId );
    if( pLayout == NULL )
    {
        msg_Err( getIntf(), "unknown layout id: %s", rData.m_layoutId.c_str() );
        return;
    }

    Bezier *pCurve = getPoints( rData.m_points.c_str() );
    if( pCurve == NULL )
    {
        msg_Err( getIntf(), "invalid format in tag points=\"%s\"",
                 rData.m_points.c_str() );
        return;
    }