textlayout.hxx

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#ifndef INCLUDED_VCL_INC_TEXTLAYOUT_HXX
#define INCLUDED_VCL_INC_TEXTLAYOUT_HXX
 
#include <memory>
 
class Control;
 
namespace vcl
{
    class SAL_NO_VTABLE ITextLayout
    {
    public:
        virtual tools::Long        GetTextWidth( const OUString& _rText, sal_Int32 _nStartIndex, sal_Int32 _nLength ) const = 0;
        virtual void        DrawText( const Point& _rStartPoint, const OUString& _rText, sal_Int32 _nStartIndex, sal_Int32 _nLength,
                                std::vector< tools::Rectangle >* _pVector, OUString* _pDisplayText ) = 0;
        virtual tools::Long GetTextArray( const OUString& _rText, KernArray* _pDXArray, sal_Int32 _nStartIndex, sal_Int32 _nLength, bool bCaret = false ) const = 0;
        virtual sal_Int32   GetTextBreak( const OUString& _rText, tools::Long _nMaxTextWidth, sal_Int32 _nStartIndex, sal_Int32 _nLength ) const = 0;
        virtual bool        DecomposeTextRectAction() const = 0;
 
    protected:
        ~ITextLayout() COVERITY_NOEXCEPT_FALSE {}
    };
 
    class DefaultTextLayout final : public ITextLayout
    {
    public:
        DefaultTextLayout( OutputDevice& _rTargetDevice )
            : m_rTargetDevice( _rTargetDevice )
        {
        }
        virtual ~DefaultTextLayout();
 
        // ITextLayout overridables
        virtual tools::Long        GetTextWidth( const OUString& _rText,
                                          sal_Int32 _nStartIndex,
                                          sal_Int32 _nLength ) const override;
 
        virtual void        DrawText( const Point& _rStartPoint,
                                      const OUString& _rText,
                                      sal_Int32 _nStartIndex,
                                      sal_Int32 _nLength,
                                      std::vector< tools::Rectangle >* _pVector,
                                      OUString* _pDisplayText ) override;
 
        virtual tools::Long GetTextArray( const OUString& _rText,
                                          KernArray* _pDXArray,
                                          sal_Int32 _nStartIndex,
                                          sal_Int32 _nLength,
                                          bool bCaret = false ) const override;
 
        virtual sal_Int32   GetTextBreak( const OUString& _rText,
                                          tools::Long _nMaxTextWidth,
                                          sal_Int32 _nStartIndex,
                                          sal_Int32 _nLength ) const override;
 
        virtual bool        DecomposeTextRectAction() const override;
 
    private:
        OutputDevice&   m_rTargetDevice;
    };
 
    class ReferenceDeviceTextLayout;
    class ControlTextRenderer final
    {
    public:
        ControlTextRenderer( const Control& _rControl, OutputDevice& _rTargetDevice, OutputDevice& _rReferenceDevice );
        ~ControlTextRenderer();
 
        tools::Rectangle   DrawText( const tools::Rectangle& _rRect,
                              const OUString& _rText, DrawTextFlags _nStyle,
                              std::vector< tools::Rectangle >* _pVector, OUString* _pDisplayText, const Size* i_pDeviceSize );
 
        tools::Rectangle   GetTextRect( const tools::Rectangle& _rRect,
                                 const OUString& _rText, DrawTextFlags _nStyle, Size* o_pDeviceSize );
 
    private:
        ControlTextRenderer( const ControlTextRenderer& ) = delete;
        ControlTextRenderer& operator=( const ControlTextRenderer& ) = delete;
 
    private:
        ::std::unique_ptr< ReferenceDeviceTextLayout >   m_pImpl;
    };
 
} // namespace vcl
 
#endif // INCLUDED_VCL_INC_TEXTLAYOUT_HXX
 
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