StaticText.h

/***********************************************************************
    created:    Tue Jul 5 2005
    author:     Paul D Turner <paul@cegui.org.uk>
*************************************************************************/
/***************************************************************************
 *   Copyright (C) 2004 - 2006 Paul D Turner & The CEGUI Development Team
 *
 *   Permission is hereby granted, free of charge, to any person obtaining
 *   a copy of this software and associated documentation files (the
 *   "Software"), to deal in the Software without restriction, including
 *   without limitation the rights to use, copy, modify, merge, publish,
 *   distribute, sublicense, and/or sell copies of the Software, and to
 *   permit persons to whom the Software is furnished to do so, subject to
 *   the following conditions:
 *
 *   The above copyright notice and this permission notice shall be
 *   included in all copies or substantial portions of the Software.
 *
 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 *   IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 *   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 *   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 *   OTHER DEALINGS IN THE SOFTWARE.
 ***************************************************************************/
#ifndef _FalStaticText_h_
#define _FalStaticText_h_

#include "CEGUI/WindowRendererSets/Core/Module.h"
#include "CEGUI/WindowRendererSets/Core/Static.h"
#include "CEGUI/falagard/Enums.h"
#include "CEGUI/ColourRect.h"
#include <vector>

#if defined(_MSC_VER)
#       pragma warning(push)
#       pragma warning(disable : 4251)
#endif

// Start of CEGUI namespace section
namespace CEGUI
{
    class COREWRSET_API FalagardStaticText : public FalagardStatic
    {
    public:
        static const String TypeName;       

        /*************************************************************************
            Child Widget name constants
        *************************************************************************/
        static const String VertScrollbarName;   
        static const String HorzScrollbarName;   

        /************************************************************************
            Constructor / Destructor
        *************************************************************************/
        FalagardStaticText(const String& type);

        ~FalagardStaticText();

        /************************************************************************
            Scrolled text implementation
        *************************************************************************/
        ColourRect    getTextColours(void) const                {return d_textCols;}

        HorizontalTextFormatting getHorizontalFormatting(void) const   {return    d_horzFormatting;}

        VerticalTextFormatting getVerticalFormatting(void) const     {return d_vertFormatting;}

        void    setTextColours(const ColourRect& colours);

        void    setVerticalFormatting(VerticalTextFormatting v_fmt);

        void    setHorizontalFormatting(HorizontalTextFormatting h_fmt);

        bool    isVerticalScrollbarEnabled(void) const  {return d_enableVertScrollbar;}

        bool    isHorizontalScrollbarEnabled(void) const    {return d_enableHorzScrollbar;}

        void    setVerticalScrollbarEnabled(bool setting);

        void    setHorizontalScrollbarEnabled(bool setting);

        float getHorizontalTextExtent() const;

        float getVerticalTextExtent() const;

        // overridden from base class
        bool handleFontRenderSizeChange(const Font* const font);
        void render(void);

        float getHorizontalScrollPosition() const;

        float getVerticalScrollPosition() const;
        
        float getUnitIntervalHorizontalScrollPosition() const;

        float getUnitIntervalVerticalScrollPosition() const;

        void setHorizontalScrollPosition(float position);

        void setVerticalScrollPosition(float position);

        void setUnitIntervalHorizontalScrollPosition(float position);

        void setUnitIntervalVerticalScrollPosition(float position);

        void invalidateFormatting();

    protected:
        void updateFormatting() const;
        
        void updateFormatting(const Sizef&) const;

        // overridden from FalagardStatic base class
        void onLookNFeelAssigned();
        void onLookNFeelUnassigned();

        // text field with scrollbars methods
        void renderScrolledText(void);

        void configureScrollbars() const;

        void configureScrollbars(void);

        Scrollbar* getVertScrollbar() const;
        Scrollbar* getHorzScrollbar() const;
        Rectf getTextRenderArea() const;
        Sizef getDocumentSize() const;

        Sizef getDocumentSize(const Rectf& renderArea) const;

        void setupStringFormatter() const;

        // overridden event handlers
        bool onTextChanged(const EventArgs& e);
        bool onSized(const EventArgs& e);
        bool onFontChanged(const EventArgs& e);
        bool onMouseWheel(const EventArgs& e);

        // event subscribers
        bool handleScrollbarChange(const EventArgs& e);

        // implementation data
        HorizontalTextFormatting d_horzFormatting;
        VerticalTextFormatting d_vertFormatting;
        ColourRect      d_textCols;             
        bool            d_enableVertScrollbar;  
        bool            d_enableHorzScrollbar;  

        mutable FormattedRenderedString* d_formattedRenderedString;

        typedef std::vector<Event::Connection> ConnectionList;
        ConnectionList  d_connections;

        mutable bool d_formatValid;

    private:
        Scrollbar* getVertScrollbarWithoutUpdate() const;
        Scrollbar* getHorzScrollbarWithoutUpdate() const;
        Rectf getTextRenderAreaWithoutUpdate() const;
        Sizef getDocumentSizeWithoutUpdate() const;
    };

} // End of  CEGUI namespace section

#if defined(_MSC_VER)
#       pragma warning(pop)
#endif

#endif  // end of guard _FalStaticText_h_