wxWidgets/interface/brush.h

/////////////////////////////////////////////////////////////////////////////
// Name:        brush.h
// Purpose:     documentation for wxBrush class
// Author:      wxWidgets team
// RCS-ID:      $Id$
// Licence:     wxWindows license
/////////////////////////////////////////////////////////////////////////////

/**
    @class wxBrush
    @wxheader{brush.h}
    
    A brush is a drawing tool for filling in areas. It is used for painting
    the background of rectangles, ellipses, etc. It has a colour and a
    style.
    
    @library{wxcore}
    @category{gdi}
    
    @stdobjects
    Objects:
    wxNullBrush
    Pointers:
    wxBLUE_BRUSH
    
    wxGREEN_BRUSH
    
    wxWHITE_BRUSH
    
    wxBLACK_BRUSH
    
    wxGREY_BRUSH
    
    wxMEDIUM_GREY_BRUSH
    
    wxLIGHT_GREY_BRUSH
    
    wxTRANSPARENT_BRUSH
    
    wxCYAN_BRUSH
    
    wxRED_BRUSH
    
    @seealso
    wxBrushList, wxDC, wxDC::SetBrush
*/
class wxBrush : public wxGDIObject
{
public:
    //@{
    /**
        Copy constructor, uses @ref overview_trefcount "reference counting".
        
        @param colour 
        Colour object.
        
        @param colourName 
        Colour name. The name will be looked up in the colour database.
        
        @param style 
        One of:
        
        wxTRANSPARENT
        
        
        Transparent (no fill).
        
        wxSOLID
        
        
        Solid.
        
        wxSTIPPLE
        
        
        Uses a bitmap as a stipple.
        
        wxBDIAGONAL_HATCH
        
        
        Backward diagonal hatch.
        
        wxCROSSDIAG_HATCH
        
        
        Cross-diagonal hatch.
        
        wxFDIAGONAL_HATCH
        
        
        Forward diagonal hatch.
        
        wxCROSS_HATCH
        
        
        Cross hatch.
        
        wxHORIZONTAL_HATCH
        
        
        Horizontal hatch.
        
        wxVERTICAL_HATCH
        
        
        Vertical hatch.
        
        @param brush 
        Pointer or reference to a brush to copy.
        
        @param stippleBitmap 
        A bitmap to use for stippling.
        
        @remarks If a stipple brush is created, the brush style will be set to
                   wxSTIPPLE.
        
        @sa wxBrushList, wxColour, wxColourDatabase
    */
    wxBrush();
        wxBrush(const wxColour& colour, int style = wxSOLID);
        wxBrush(const wxString& colourName, int style);
        wxBrush(const wxBitmap& stippleBitmap);
        wxBrush(const wxBrush& brush);
    //@}

    /**
        Destructor.
        See @ref overview_refcountdestruct "reference-counted object destruction" for
        more info.
        
        @remarks Although all remaining brushes are deleted when the application
                   exits, the application should try to clean up all
                   brushes itself. This is because wxWidgets cannot know
                   if a pointer to the brush object is stored in an
                   application data structure, and there is a risk of
                   double deletion.
    */
    ~wxBrush();

    /**
        Returns a reference to the brush colour.
        
        @sa SetColour()
    */
    wxColour GetColour();

    /**
        Gets a pointer to the stipple bitmap. If the brush does not have a wxSTIPPLE
        style,
        this bitmap may be non-@NULL but uninitialised (@ref wxBitmap::isok
        wxBitmap:IsOk returns @false).
        
        @sa SetStipple()
    */
    wxBitmap * GetStipple();

    /**
        Returns the brush style, one of:
        
        @b wxTRANSPARENT
        
        
        Transparent (no fill).
        
        @b wxSOLID
        
        
        Solid.
        
        @b wxBDIAGONAL_HATCH
        
        
        Backward diagonal hatch.
        
        @b wxCROSSDIAG_HATCH
        
        
        Cross-diagonal hatch.
        
        @b wxFDIAGONAL_HATCH
        
        
        Forward diagonal hatch.
        
        @b wxCROSS_HATCH
        
        
        Cross hatch.
        
        @b wxHORIZONTAL_HATCH
        
        
        Horizontal hatch.
        
        @b wxVERTICAL_HATCH
        
        
        Vertical hatch.
        
        @b wxSTIPPLE
        
        
        Stippled using a bitmap.
        
        @b wxSTIPPLE_MASK_OPAQUE
        
        
        Stippled using a bitmap's mask.
        
        
        @sa SetStyle(), SetColour(), SetStipple()
    */
    int GetStyle();

    /**
        Returns @true if the style of the brush is any of hatched fills.
        
        @sa GetStyle()
    */
    bool IsHatch();

    /**
        Returns @true if the brush is initialised. It will return @false if the default
        constructor has been used (for example, the brush is a member of a class, or
        @NULL has been assigned to it).
    */
#define bool IsOk()     /* implementation is private */

    //@{
    /**
        Sets the brush colour using red, green and blue values.
        
        @sa GetColour()
    */
    void SetColour(wxColour& colour);
        void SetColour(const wxString& colourName);
        void SetColour(unsigned char red, unsigned char green,
                       unsigned char blue);
    //@}

    /**
        Sets the stipple bitmap.
        
        @param bitmap 
        The bitmap to use for stippling.
        
        @remarks The style will be set to wxSTIPPLE, unless the bitmap has a mask
                   associated to it, in which case the style will be set
                   to wxSTIPPLE_MASK_OPAQUE.
        
        @sa wxBitmap
    */
    void SetStipple(const wxBitmap& bitmap);

    /**
        Sets the brush style.
        
        @param style 
        One of:
        
        wxTRANSPARENT
        
        
        Transparent (no fill).
        
        wxSOLID
        
        
        Solid.
        
        wxBDIAGONAL_HATCH
        
        
        Backward diagonal hatch.
        
        wxCROSSDIAG_HATCH
        
        
        Cross-diagonal hatch.
        
        wxFDIAGONAL_HATCH
        
        
        Forward diagonal hatch.
        
        wxCROSS_HATCH
        
        
        Cross hatch.
        
        wxHORIZONTAL_HATCH
        
        
        Horizontal hatch.
        
        wxVERTICAL_HATCH
        
        
        Vertical hatch.
        
        wxSTIPPLE
        
        
        Stippled using a bitmap.
        
        wxSTIPPLE_MASK_OPAQUE
        
        
        Stippled using a bitmap's mask.
        
        @sa GetStyle()
    */
    void SetStyle(int style);

    /**
        Inequality operator.
        See @ref overview_refcountequality "reference-counted object comparison" for
        more info.
    */
    bool operator !=(const wxBrush& brush);

    /**
        Assignment operator, using @ref overview_trefcount "reference counting".
    */
    wxBrush operator =(const wxBrush& brush);

    /**
        Equality operator.
        See @ref overview_refcountequality "reference-counted object comparison" for
        more info.
    */
    bool operator ==(const wxBrush& brush);
};