builder.cpp

video linux conference

    // XXX: test to be changed! XXX
    if( rData.m_actionId == "move" )
    {
        CtrlMove *pMove = new CtrlMove( getIntf(), m_pTheme->getWindowManager(),
             *pImage, *pWindow, UString( getIntf(), rData.m_help.c_str() ),
             NULL);
        pLayout->addControl( pMove, pos, rData.m_layer );
    }
    else if( rData.m_actionId == "resizeSE" )
    {
        CtrlResize *pResize = new CtrlResize( getIntf(), *pImage, *pLayout,
                UString( getIntf(), rData.m_help.c_str() ), NULL );
        pLayout->addControl( pResize, pos, rData.m_layer );
    }
    else
    {
        pLayout->addControl( pImage, pos, rData.m_layer );
    }

    m_pTheme->m_controls[rData.m_id] = CtrlGenericPtr( pImage );
}


void Builder::addText( const BuilderData::Text &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;
    }

    GenericFont *pFont = getFont( rData.m_fontId );
    if( pFont == NULL )
    {
        msg_Err( getIntf(), "Unknown font id: %s", rData.m_fontId.c_str() );
        return;
    }

    // Create a text variable
    VarText *pVar = new VarText( getIntf() );
    UString msg( getIntf(), rData.m_text.c_str() );
    pVar->set( msg );
    m_pTheme->m_vars.push_back( VariablePtr( pVar ) );

    // Get the visibility variable
    // XXX check when it is null
    Interpreter *pInterpreter = Interpreter::instance( getIntf() );
    VarBool *pVisible = pInterpreter->getVarBool( rData.m_visible, m_pTheme );

    CtrlText *pText = new CtrlText( getIntf(), *pVar, *pFont,
        UString( getIntf(), rData.m_help.c_str() ), rData.m_color, pVisible );

    int height = pFont->getSize();

    // Compute the position of the control
    const Position pos = makePosition( rData.m_leftTop, rData.m_rightBottom,
                                       rData.m_xPos, rData.m_yPos,
                                       rData.m_width, height,
                                       *pLayout );

    pLayout->addControl( pText, pos, rData.m_layer );

    m_pTheme->m_controls[rData.m_id] = CtrlGenericPtr( pText );
}


void Builder::addRadialSlider( const BuilderData::RadialSlider &rData )
{
    // Get the bitmaps of the slider
    GenericBitmap *pSeq = NULL;
    GET_BMP( pSeq, rData.m_sequence );

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

    // Get the variable associated to the slider
    Interpreter *pInterpreter = Interpreter::instance( getIntf() );
    VarPercent *pVar = pInterpreter->getVarPercent( rData.m_value, m_pTheme );
    if( pVar == NULL )
    {
        msg_Err( getIntf(), "Unknown slider value: %s", rData.m_value.c_str() );
        return;
    }

    // Get the visibility variable
    // XXX check when it is null
    VarBool *pVisible = pInterpreter->getVarBool( rData.m_visible, m_pTheme );

    // Create the control
    CtrlRadialSlider *pRadial =
        new CtrlRadialSlider( getIntf(), *pSeq, rData.m_nbImages, *pVar,
                              rData.m_minAngle, rData.m_maxAngle,
                              UString( getIntf(), rData.m_help.c_str() ),
                              pVisible );

    // XXX: resizing is not supported
    // Compute the position of the control
    const Position pos =
        makePosition( rData.m_leftTop, rData.m_rightBottom, rData.m_xPos,
                      rData.m_yPos, pSeq->getWidth(),
                      pSeq->getHeight() / rData.m_nbImages, *pLayout );

    pLayout->addControl( pRadial, pos, rData.m_layer );

    m_pTheme->m_controls[rData.m_id] = CtrlGenericPtr( pRadial );
}


void Builder::addSlider( const BuilderData::Slider &rData )
{
    // Get the bitmaps of the slider
    GenericBitmap *pBmpUp = NULL;
    GET_BMP( pBmpUp, rData.m_upId );

    GenericBitmap *pBmpDown = pBmpUp;
    GET_BMP( pBmpDown, rData.m_downId );

    GenericBitmap *pBmpOver = pBmpUp;
    GET_BMP( pBmpOver, rData.m_overId );

    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;
    }
    m_pTheme->m_curves.push_back( BezierPtr( pCurve ) );

    // Get the visibility variable
    // XXX check when it is null
    Interpreter *pInterpreter = Interpreter::instance( getIntf() );
    VarBool *pVisible = pInterpreter->getVarBool( rData.m_visible, m_pTheme );

    // Get the variable associated to the slider
    VarPercent *pVar = pInterpreter->getVarPercent( rData.m_value, m_pTheme );
    if( pVar == NULL )
    {
        msg_Err( getIntf(), "Unknown slider value: %s", rData.m_value.c_str() );
        return;
    }

    // Create the cursor and background controls
    CtrlSliderCursor *pCursor = new CtrlSliderCursor( getIntf(), *pBmpUp,
        *pBmpOver, *pBmpDown, *pCurve, *pVar, pVisible,
        UString( getIntf(), rData.m_tooltip.c_str() ),
        UString( getIntf(), rData.m_help.c_str() ) );

    CtrlSliderBg *pBackground = new CtrlSliderBg( getIntf(), *pCursor,
        *pCurve, *pVar, rData.m_thickness, pVisible,
        UString( getIntf(), rData.m_help.c_str() ) );

    // Compute the position of the control
    const Position pos = makePosition( rData.m_leftTop, rData.m_rightBottom,
                                       rData.m_xPos, rData.m_yPos,
                                       pCurve->getWidth(), pCurve->getHeight(),
                                       *pLayout );

    pLayout->addControl( pBackground, pos, rData.m_layer );
    pLayout->addControl( pCursor, pos, rData.m_layer );

    m_pTheme->m_controls[rData.m_id] = CtrlGenericPtr( pCursor );
    m_pTheme->m_controls[rData.m_id + "_bg"] = CtrlGenericPtr( pBackground );
}


void Builder::addList( const BuilderData::List &rData )
{
    // Get the background bitmap, if any
    GenericBitmap *pBgBmp = NULL;
    GET_BMP( pBgBmp, rData.m_bgImageId );

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

    GenericFont *pFont = getFont( rData.m_fontId );
    if( pFont == NULL )
    {
        msg_Err( getIntf(), "Unknown font id: %s", rData.m_fontId.c_str() );
        return;
    }

    // Get the list variable
    Interpreter *pInterpreter = Interpreter::instance( getIntf() );
    VarList *pVar = pInterpreter->getVarList( rData.m_var, m_pTheme );
    if( pVar == NULL )
    {
        msg_Err( getIntf(), "No such list variable: %s", rData.m_var.c_str() );
        return;
    }

    // Get the visibility variable
    // XXX check when it is null
    VarBool *pVisible = pInterpreter->getVarBool( rData.m_visible, m_pTheme );

    // Create the list control
    CtrlList *pList = new CtrlList( getIntf(), *pVar, *pFont, pBgBmp,
       rData.m_fgColor, rData.m_playColor, rData.m_bgColor1,
       rData.m_bgColor2, rData.m_selColor,
       UString( getIntf(), rData.m_help.c_str() ), pVisible );

    // Compute the position of the control
    const Position pos = makePosition( rData.m_leftTop, rData.m_rightBottom,
                                       rData.m_xPos, rData.m_yPos,
                                       rData.m_width, rData.m_height,
                                       *pLayout );

    pLayout->addControl( pList, pos, rData.m_layer );

    m_pTheme->m_controls[rData.m_id] = CtrlGenericPtr( pList );
}


void Builder::addVideo( const BuilderData::Video &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;
    }

    // Get the visibility variable
    // XXX check when it is null
    Interpreter *pInterpreter = Interpreter::instance( getIntf() );
    VarBool *pVisible = pInterpreter->getVarBool( rData.m_visible, m_pTheme );

    CtrlVideo *pVideo = new CtrlVideo( getIntf(),
        UString( getIntf(), rData.m_help.c_str() ), pVisible );

    // Compute the position of the control
    const Position pos = makePosition( rData.m_leftTop, rData.m_rightBottom,
                                       rData.m_xPos, rData.m_yPos,
                                       rData.m_width, rData.m_height,
                                       *pLayout );

    pLayout->addControl( pVideo, pos, rData.m_layer );

    m_pTheme->m_controls[rData.m_id] = CtrlGenericPtr( pVideo );
}


const Position Builder::makePosition( const string &rLeftTop,
                                      const string &rRightBottom,
                                      int xPos, int yPos, int width,
                                      int height, const Box &rBox ) const
{
    int left = 0, top = 0, right = 0, bottom = 0;
    Position::Ref_t refLeftTop = Position::kLeftTop;
    Position::Ref_t refRightBottom = Position::kLeftTop;

    int boxWidth = rBox.getWidth();
    int boxHeight = rBox.getHeight();

    // Position of the left top corner
    if( rLeftTop == "lefttop" )
    {
        left = xPos;
        top = yPos;
        refLeftTop = Position::kLeftTop;
    }
    else if( rLeftTop == "righttop" )
    {
        left = xPos - boxWidth + 1;
        top = yPos;
        refLeftTop = Position::kRightTop;
    }
    else if( rLeftTop == "leftbottom" )
    {
        left = xPos;
        top = yPos - boxHeight + 1;
        refLeftTop = Position::kLeftBottom;
    }
    else if( rLeftTop == "rightbottom" )
    {
        left = xPos - boxWidth + 1;
        top = yPos - boxHeight + 1;
        refLeftTop = Position::kRightBottom;
    }

    // Position of the right bottom corner
    if( rRightBottom == "lefttop" )
    {
        right = xPos + width - 1;
        bottom = yPos + height - 1;
        refRightBottom = Position::kLeftTop;
    }
    else if( rRightBottom == "righttop" )
    {
        right = xPos + width - boxWidth;
        bottom = yPos + height - 1;
        refRightBottom = Position::kRightTop;
    }
    else if( rRightBottom == "leftbottom" )
    {
        right = xPos + width - 1;
        bottom = yPos + height - boxHeight;
        refRightBottom = Position::kLeftBottom;
    }
    else if( rRightBottom == "rightbottom" )
    {
        right = xPos + width - boxWidth;
        bottom = yPos + height - boxHeight;
        refRightBottom = Position::kRightBottom;
    }

    return Position( left, top, right, bottom, rBox, refLeftTop,
                     refRightBottom );
}


GenericFont *Builder::getFont( const string &fontId )
{
    GenericFont *pFont = m_pTheme->getFontById(fontId);
    if( !pFont && fontId == "defaultfont" )
    {
        // Get the resource path and try to load the default font
        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 + "FreeSans.ttf";
            pFont = new FT2Font( getIntf(), path, 12 );
            if( pFont->init() )
            {
                // Font loaded successfully
                m_pTheme->m_fonts["defaultfont"] = GenericFontPtr( pFont );
                break;
            }
            else
            {
                delete pFont;
                pFont = NULL;
            }
        }
        if( !pFont )
        {
            msg_Err( getIntf(), "Failed to open the default font" );
        }
    }
    return pFont;
}


Bezier *Builder::getPoints( const char *pTag ) const
{
    vector<float> xBez, yBez;
    int x, y, n;
    while( 1 )
    {
        if( sscanf( pTag, "(%d,%d)%n", &x, &y, &n ) < 1 )
        {
            return NULL;
        }
#if 0
        if( x < 0 || y < 0 )
        {
            msg_Err( getIntf(),
                     "Slider points cannot have negative coordinates!" );
            return NULL;
        }
#endif
        xBez.push_back( x );
        yBez.push_back( y );
        pTag += n;
        if( *pTag == '\0' )
        {
            break;
        }
        if( *(pTag++) != ',' )
        {
            return NULL;
        }
    }

    // Create the Bezier curve
    return new Bezier( getIntf(), xBez, yBez );
}