ctrl_tree.hpp

/*****************************************************************************
 * ctrl_tree.hpp
 *****************************************************************************
 * Copyright (C) 2003 VideoLAN
 * $Id: ctrl_tree.hpp 12464 2005-09-03 15:17:57Z ipkiss $
 *
 * Authors: Antoine Cellerier
 *
 * 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.
 *****************************************************************************/

#ifndef CTRL_TREE_HPP
#define CTRL_TREE_HPP

#include "ctrl_generic.hpp"
#include "../utils/observer.hpp"
#include "../utils/var_tree.hpp"

class OSGraphics;
class GenericFont;
class GenericBitmap;

class CtrlTree: public CtrlGeneric, public Observer<VarTree>,
    public Observer<VarPercent>
{
    public:
        CtrlTree( intf_thread_t *pIntf,
                  VarTree &rTree,
                  const GenericFont &rFont,
                  const GenericBitmap *pBgBitmap,
                  const GenericBitmap *pItemBitmap,
                  const GenericBitmap *pOpenBitmap,
                  const GenericBitmap *pClosedBitmap,
                  uint32_t fgColor,
                  uint32_t playColor,
                  uint32_t bgColor1,
                  uint32_t bgColor2,
                  uint32_t selColor,
                  const UString &rHelp,
                  VarBool *pVisible );
        virtual ~CtrlTree();

        virtual void handleEvent( EvtGeneric &rEvent );

        virtual bool mouseOver( int x, int y ) const;

        virtual void draw( OSGraphics &rImage, int xDest, int yDest );

        virtual void onResize();

        virtual bool isFocusable() const { return true; }

        virtual string getType() const { return "tree"; }

    private:
        VarTree &m_rTree;
        const GenericFont &m_rFont;
        const GenericBitmap *m_pBgBitmap;
        // (TODO : add different bitmaps for different item types
        //         like in the wx playlist)
        const GenericBitmap *m_pItemBitmap;
        const GenericBitmap *m_pOpenBitmap;
        const GenericBitmap *m_pClosedBitmap;
        uint32_t m_fgColor;
        uint32_t m_playColor;
        uint32_t m_bgColor1, m_bgColor2;
        uint32_t m_selColor;
        VarTree *m_pLastSelected;
        OSGraphics *m_pImage;
        VarTree::Iterator m_lastPos;

        virtual void onUpdate( Subject<VarTree> &rTree );

        // Method called when the position variable of the tree is modified
        virtual void onUpdate( Subject<VarPercent> &rPercent );

        virtual void onPositionChange();

        int maxItems();

        int itemHeight();

        int itemImageWidth();

        void autoScroll();

        void makeImage();


        VarTree::Iterator findItemAtPos( int n );
};

#endif

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