wxWidgets/include/wx/gtk1/bitmap.h

/////////////////////////////////////////////////////////////////////////////
// Name:        wx/gtk1/bitmap.h
// Purpose:
// Author:      Robert Roebling
// Copyright:   (c) 1998 Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////


#ifndef __GTKBITMAPH__
#define __GTKBITMAPH__

#include "wx/defs.h"
#include "wx/object.h"
#include "wx/string.h"
#include "wx/palette.h"
#include "wx/gdiobj.h"

class WXDLLIMPEXP_FWD_CORE wxPixelDataBase;

//-----------------------------------------------------------------------------
// classes
//-----------------------------------------------------------------------------

class WXDLLIMPEXP_FWD_CORE wxMask;
class WXDLLIMPEXP_FWD_CORE wxBitmap;
class WXDLLIMPEXP_FWD_CORE wxImage;

//-----------------------------------------------------------------------------
// wxMask
//-----------------------------------------------------------------------------

class WXDLLIMPEXP_CORE wxMask: public wxObject
{
public:
    wxMask();
    wxMask( const wxBitmap& bitmap, const wxColour& colour );
#if wxUSE_PALETTE
    wxMask( const wxBitmap& bitmap, int paletteIndex );
#endif // wxUSE_PALETTE
    wxMask( const wxBitmap& bitmap );
    virtual ~wxMask();

    bool Create( const wxBitmap& bitmap, const wxColour& colour );
#if wxUSE_PALETTE
    bool Create( const wxBitmap& bitmap, int paletteIndex );
#endif // wxUSE_PALETTE
    bool Create( const wxBitmap& bitmap );

    // implementation
    GdkBitmap   *m_bitmap;

    GdkBitmap *GetBitmap() const;

private:
    wxDECLARE_DYNAMIC_CLASS(wxMask);
};

//-----------------------------------------------------------------------------
// wxBitmap
//-----------------------------------------------------------------------------

class WXDLLIMPEXP_CORE wxBitmap: public wxBitmapBase
{
public:
    wxBitmap() {}
    wxBitmap( int width, int height, int depth = -1 ) { Create( width, height, depth ); }
    wxBitmap( const wxSize& sz, int depth = -1 ) { Create( sz, depth ); }
    wxBitmap( const char bits[], int width, int height, int depth = 1 );
    wxBitmap( const char* const* bits );
#ifdef wxNEEDS_CHARPP
    // needed for old GCC
    wxBitmap(char** data)
    {
        *this = wxBitmap(const_cast<const char* const*>(data));
    }
#endif
    wxBitmap( const wxString &filename, wxBitmapType type = wxBITMAP_DEFAULT_TYPE );
    wxBitmap( const wxImage& image, int depth = -1, double WXUNUSED(scale) = 1.0 ) { (void)CreateFromImage(image, depth); }
    virtual ~wxBitmap();

    bool Create(int width, int height, int depth = wxBITMAP_SCREEN_DEPTH);
    bool Create(const wxSize& sz, int depth = wxBITMAP_SCREEN_DEPTH)
        { return Create(sz.GetWidth(), sz.GetHeight(), depth); }
    bool Create(int width, int height, const wxDC& WXUNUSED(dc))
        { return Create(width,height); }

    virtual int GetHeight() const;
    virtual int GetWidth() const;
    virtual int GetDepth() const;

    wxImage ConvertToImage() const;

    // copies the contents and mask of the given (colour) icon to the bitmap
    virtual bool CopyFromIcon(const wxIcon& icon);

    wxMask *GetMask() const;
    void SetMask( wxMask *mask );

    wxBitmap GetSubBitmap( const wxRect& rect ) const;

    bool SaveFile(const wxString &name, wxBitmapType type,
                          const wxPalette *palette = NULL) const;
    bool LoadFile(const wxString &name, wxBitmapType type = wxBITMAP_DEFAULT_TYPE);

#if wxUSE_PALETTE
    wxPalette *GetPalette() const;
    void SetPalette(const wxPalette& palette);
    wxPalette *GetColourMap() const { return GetPalette(); }
#endif // wxUSE_PALETTE

    static void InitStandardHandlers();

    // implementation
    // --------------

    void SetHeight( int height );
    void SetWidth( int width );
    void SetDepth( int depth );
    void SetPixmap( GdkPixmap *pixmap );
    void SetBitmap( GdkBitmap *bitmap );

    GdkPixmap *GetPixmap() const;
    GdkBitmap *GetBitmap() const;
    bool HasPixmap() const;

    // Basically, this corresponds to Win32 StretchBlt()
    wxBitmap Rescale( int clipx, int clipy, int clipwidth, int clipheight, int width, int height );

    // raw bitmap access support functions
    void *GetRawData(wxPixelDataBase& data, int bpp);
    void UngetRawData(wxPixelDataBase& data);

    bool HasAlpha() const;

protected:
    bool CreateFromImage(const wxImage& image, int depth);

    virtual wxGDIRefData *CreateGDIRefData() const;
    virtual wxGDIRefData *CloneGDIRefData(const wxGDIRefData *data) const;

private:
    // to be called from CreateFromImage only!
    bool CreateFromImageAsBitmap(const wxImage& image);
    bool CreateFromImageAsPixmap(const wxImage& image);

    friend class wxBitmapHandler;

private:
    wxDECLARE_DYNAMIC_CLASS(wxBitmap);
};


#endif // __GTKBITMAPH__