builder.cpp

video linux conference

/*****************************************************************************
 * builder.cpp
 *****************************************************************************
 * Copyright (C) 2003 VideoLAN
 * $Id: builder.cpp 11009 2005-05-14 14:39:05Z ipkiss $
 *
 * Authors: Cyril Deguet     <[e-mail]>
 *          Olivier Teuli鑢e <[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.
 *****************************************************************************/

#include <string.h>
#include "builder.hpp"
#include "builder_data.hpp"
#include "interpreter.hpp"
#include "../src/png_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/theme.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_video.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 ):
    SkinObject( pIntf ), m_rData( rData ), 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( Bitmap );
    ADD_OBJECTS( BitmapFont );
    ADD_OBJECTS( Font );
    ADD_OBJECTS( Window );
    ADD_OBJECTS( Layout );
    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( Video );

    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; \
        } \
    }

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::addBitmap( const BuilderData::Bitmap &rData )
{
    GenericBitmap *pBmp =
        new PngBitmap( getIntf(), m_pImageHandler,
                       rData.m_fileName, rData.m_alphaColor );
    m_pTheme->m_bitmaps[rData.m_id] = GenericBitmapPtr( pBmp );
}


void Builder::addBitmapFont( const BuilderData::BitmapFont &rData )
{
    GenericBitmap *pBmp =
        new PngBitmap( getIntf(), m_pImageHandler, rData.m_file, 0 );
    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 )
{
    GenericFont *pFont = new FT2Font( getIntf(), rData.m_fontFile,
                                      rData.m_size );
    if( pFont->init() )
    {
        m_pTheme->m_fonts[rData.m_id] = GenericFontPtr( pFont );
    }
    else
    {
        delete pFont;
    }
}


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 );

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

    Anchor *pAnc = new Anchor( getIntf(), rData.m_xPos, rData.m_yPos,
                               rData.m_range, rData.m_priority,
                               *pCurve, *pLayout );
    pLayout->addAnchor( pAnc );
}


void Builder::addButton( const BuilderData::Button &rData )
{
    // Get the bitmaps of the button
    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;
    }

    CmdGeneric *pCommand = parseAction( rData.m_actionId );
    if( pCommand == NULL )
    {
        msg_Err( getIntf(), "Invalid action: %s", rData.m_actionId.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 );

    CtrlButton *pButton = new CtrlButton( getIntf(), *pBmpUp, *pBmpOver,
        *pBmpDown, *pCommand, UString( getIntf(), rData.m_tooltip.c_str() ),
        UString( getIntf(), rData.m_help.c_str() ), pVisible );

    // Compute the position of the control
    // XXX (we suppose all the images have the same size...)
    const Position pos = makePosition( rData.m_leftTop, rData.m_rightBottom,
                                       rData.m_xPos, rData.m_yPos,
                                       pBmpUp->getWidth(),
                                       pBmpUp->getHeight(), *pLayout );

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

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


void Builder::addCheckbox( const BuilderData::Checkbox &rData )
{
    // Get the bitmaps of the checkbox
    GenericBitmap *pBmpUp1 = NULL;
    GET_BMP( pBmpUp1, rData.m_up1Id );

    GenericBitmap *pBmpDown1 = pBmpUp1;
    GET_BMP( pBmpDown1, rData.m_down1Id );

    GenericBitmap *pBmpOver1 = pBmpUp1;
    GET_BMP( pBmpOver1, rData.m_over1Id );

    GenericBitmap *pBmpUp2 = NULL;
    GET_BMP( pBmpUp2, rData.m_up2Id );

    GenericBitmap *pBmpDown2 = pBmpUp2;
    GET_BMP( pBmpDown2, rData.m_down2Id );

    GenericBitmap *pBmpOver2 = pBmpUp2;
    GET_BMP( pBmpOver2, rData.m_over2Id );

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

    CmdGeneric *pCommand1 = parseAction( rData.m_action1 );
    if( pCommand1 == NULL )
    {
        msg_Err( getIntf(), "Invalid action: %s", rData.m_action1.c_str() );
        return;
    }

    CmdGeneric *pCommand2 = parseAction( rData.m_action2 );
    if( pCommand2 == NULL )
    {
        msg_Err( getIntf(), "Invalid action: %s", rData.m_action2.c_str() );
        return;
    }

    // Get the state variable
    Interpreter *pInterpreter = Interpreter::instance( getIntf() );
    VarBool *pVar = pInterpreter->getVarBool( rData.m_state, m_pTheme );
    if( pVar == NULL )
    {
        // TODO: default state
        return;
    }

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

    // Create the control
    CtrlCheckbox *pCheckbox = new CtrlCheckbox( getIntf(), *pBmpUp1,
        *pBmpOver1, *pBmpDown1, *pBmpUp2, *pBmpOver2, *pBmpDown2, *pCommand1,
        *pCommand2, UString( getIntf(), rData.m_tooltip1.c_str() ),
        UString( getIntf(), rData.m_tooltip2.c_str() ), *pVar,
        UString( getIntf(), rData.m_help.c_str() ), pVisible );

    // Compute the position of the control
    // XXX (we suppose all the images have the same size...)
    const Position pos = makePosition( rData.m_leftTop, rData.m_rightBottom,
                                       rData.m_xPos, rData.m_yPos,
                                       pBmpUp1->getWidth(),
                                       pBmpUp1->getHeight(), *pLayout );

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

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


void Builder::addImage( const BuilderData::Image &rData )
{
    GenericBitmap *pBmp = NULL;
    GET_BMP( pBmp, rData.m_bmpId );

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

    TopWindow *pWindow = m_pTheme->getWindowById(rData.m_windowId);
    if( pWindow == NULL )
    {
        msg_Err( getIntf(), "unknown window id: %s", rData.m_windowId.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 );

    CtrlImage::resize_t resizeMethod =
        (rData.m_resize == "scale" ? CtrlImage::kScale : CtrlImage::kMosaic);
    CtrlImage *pImage = new CtrlImage( getIntf(), *pBmp, resizeMethod,
        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, pBmp->getWidth(),
                                       pBmp->getHeight(), *pLayout );