wxWidgets/include/wx/image.h
Guillermo Rodriguez Garcia c9d01afd82 Added ComputeHistogram
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4955 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1999-12-15 11:45:32 +00:00

407 lines
11 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: image.h
// Purpose: wxImage class
// Author: Robert Roebling
// RCS-ID: $Id$
// Copyright: (c) Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_IMAGE_H_
#define _WX_IMAGE_H_
#ifdef __GNUG__
#pragma interface "image.h"
#endif
#include "wx/setup.h"
#include "wx/object.h"
#include "wx/string.h"
#include "wx/gdicmn.h"
#include "wx/bitmap.h"
#if wxUSE_STREAMS
# include "wx/stream.h"
#endif
//-----------------------------------------------------------------------------
// classes
//-----------------------------------------------------------------------------
class WXDLLEXPORT wxImageHandler;
#if wxUSE_LIBPNG
class WXDLLEXPORT wxPNGHandler;
#endif
#if wxUSE_LIBJPEG
class WXDLLEXPORT wxJPEGHandler;
#endif
#if wxUSE_LIBTIFF
class WXDLLEXPORT wxTIFFHandler;
#endif
class WXDLLEXPORT wxBMPHandler;
#if wxUSE_GIF
class WXDLLEXPORT wxGIFHandler;
#endif
#if wxUSE_PNM
class WXDLLEXPORT wxPNMHandler;
#endif
#if wxUSE_PCX
class WXDLLEXPORT wxPCXHandler;
#endif
class WXDLLEXPORT wxImage;
//-----------------------------------------------------------------------------
// wxImageHandler
//-----------------------------------------------------------------------------
class WXDLLEXPORT wxImageHandler: public wxObject
{
DECLARE_CLASS(wxImageHandler)
public:
wxImageHandler() { m_name = ""; m_extension = ""; m_type = 0; }
#if wxUSE_STREAMS
virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
virtual int GetImageCount( wxInputStream& stream );
bool CanRead( wxInputStream& stream ) { return DoCanRead(stream); }
bool CanRead( const wxString& name );
#endif
void SetName(const wxString& name) { m_name = name; }
void SetExtension(const wxString& ext) { m_extension = ext; }
void SetType(long type) { m_type = type; }
void SetMimeType(const wxString& type) { m_mime = type; }
wxString GetName() const { return m_name; }
wxString GetExtension() const { return m_extension; }
long GetType() const { return m_type; }
wxString GetMimeType() const { return m_mime; }
protected:
virtual bool DoCanRead( wxInputStream& stream ) = 0;
wxString m_name;
wxString m_extension;
wxString m_mime;
long m_type;
};
//-----------------------------------------------------------------------------
// wxPNGHandler
//-----------------------------------------------------------------------------
#if wxUSE_LIBPNG
class WXDLLEXPORT wxPNGHandler: public wxImageHandler
{
DECLARE_DYNAMIC_CLASS(wxPNGHandler)
public:
inline wxPNGHandler()
{
m_name = "PNG file";
m_extension = "png";
m_type = wxBITMAP_TYPE_PNG;
m_mime = "image/png";
};
#if wxUSE_STREAMS
virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
virtual bool DoCanRead( wxInputStream& stream );
#endif
};
#endif
//-----------------------------------------------------------------------------
// wxJPEGHandler
//-----------------------------------------------------------------------------
#if wxUSE_LIBJPEG
class WXDLLEXPORT wxJPEGHandler: public wxImageHandler
{
DECLARE_DYNAMIC_CLASS(wxJPEGHandler)
public:
inline wxJPEGHandler()
{
m_name = "JPEG file";
m_extension = "jpg";
m_type = wxBITMAP_TYPE_JPEG;
m_mime = "image/jpeg";
};
#if wxUSE_STREAMS
virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
virtual bool DoCanRead( wxInputStream& stream );
#endif
};
#endif
//-----------------------------------------------------------------------------
// wxTIFFHandler
//-----------------------------------------------------------------------------
#if wxUSE_LIBTIFF
class WXDLLEXPORT wxTIFFHandler: public wxImageHandler
{
DECLARE_DYNAMIC_CLASS(wxTIFFHandler)
public:
inline wxTIFFHandler()
{
m_name = "TIFF file";
m_extension = "tif";
m_type = wxBITMAP_TYPE_TIF;
m_mime = "image/tiff";
};
#if wxUSE_STREAMS
virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
virtual bool DoCanRead( wxInputStream& stream );
virtual int GetImageCount( wxInputStream& stream );
#endif
};
#endif
//-----------------------------------------------------------------------------
// wxBMPHandler
//-----------------------------------------------------------------------------
class WXDLLEXPORT wxBMPHandler: public wxImageHandler
{
DECLARE_DYNAMIC_CLASS(wxBMPHandler)
public:
inline wxBMPHandler()
{
m_name = "BMP file";
m_extension = "bmp";
m_type = wxBITMAP_TYPE_BMP;
m_mime = "image/bmp";
};
#if wxUSE_STREAMS
virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
virtual bool DoCanRead( wxInputStream& stream );
#endif
};
//-----------------------------------------------------------------------------
// wxGIFHandler
//-----------------------------------------------------------------------------
#if wxUSE_GIF
class WXDLLEXPORT wxGIFHandler : public wxImageHandler
{
DECLARE_DYNAMIC_CLASS(wxGIFHandler)
public:
inline wxGIFHandler()
{
m_name = "GIF file";
m_extension = "gif";
m_type = wxBITMAP_TYPE_GIF;
m_mime = "image/gif";
};
#if wxUSE_STREAMS
virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
virtual bool DoCanRead( wxInputStream& stream );
#endif
};
#endif
//-----------------------------------------------------------------------------
// wxPNMHandler
//-----------------------------------------------------------------------------
#if wxUSE_PNM
class WXDLLEXPORT wxPNMHandler : public wxImageHandler
{
DECLARE_DYNAMIC_CLASS(wxPNMHandler)
public:
inline wxPNMHandler()
{
m_name = "PNM file";
m_extension = "pnm";
m_type = wxBITMAP_TYPE_PNM;
m_mime = "image/pnm";
};
#if wxUSE_STREAMS
virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
virtual bool DoCanRead( wxInputStream& stream );
#endif
};
#endif
//-----------------------------------------------------------------------------
// wxPCXHandler
//-----------------------------------------------------------------------------
#if wxUSE_PCX
class WXDLLEXPORT wxPCXHandler : public wxImageHandler
{
DECLARE_DYNAMIC_CLASS(wxPCXHandler)
public:
inline wxPCXHandler()
{
m_name = "PCX file";
m_extension = "pcx";
m_type = wxBITMAP_TYPE_PCX;
m_mime = "image/pcx";
};
#if wxUSE_STREAMS
virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
virtual bool DoCanRead( wxInputStream& stream );
#endif // wxUSE_STREAMS
};
#endif // wxUSE_PCX
//-----------------------------------------------------------------------------
// wxImage
//-----------------------------------------------------------------------------
// GRG: Dic/99
class WXDLLEXPORT wxHNode
{
public:
unsigned long index;
unsigned long value;
};
class WXDLLEXPORT wxImage: public wxObject
{
DECLARE_DYNAMIC_CLASS(wxImage)
friend class WXDLLEXPORT wxImageHandler;
public:
wxImage();
wxImage( int width, int height );
wxImage( const wxString& name, long type = wxBITMAP_TYPE_ANY );
wxImage( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY );
wxImage( const wxString& name, const wxString& mimetype );
wxImage( wxInputStream& stream, const wxString& mimetype );
wxImage( const wxImage& image );
wxImage( const wxImage* image );
// these functions get implemented in /src/(platform)/bitmap.cpp
wxImage( const wxBitmap &bitmap );
operator wxBitmap() const { return ConvertToBitmap(); }
wxBitmap ConvertToBitmap() const;
void Create( int width, int height );
void Destroy();
// return the new image with size width*height
wxImage GetSubImage( const wxRect& ) const;
// return the new image with size width*height
wxImage Scale( int width, int height ) const;
// rescales the image in place
void Rescale( int width, int height ) { *this = Scale(width, height); }
// these routines are slow but safe
void SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b );
unsigned char GetRed( int x, int y );
unsigned char GetGreen( int x, int y );
unsigned char GetBlue( int x, int y );
static bool CanRead( const wxString& name );
virtual bool LoadFile( const wxString& name, long type = wxBITMAP_TYPE_ANY );
virtual bool LoadFile( const wxString& name, const wxString& mimetype );
#if wxUSE_STREAMS
static bool CanRead( wxInputStream& stream );
virtual bool LoadFile( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY );
virtual bool LoadFile( wxInputStream& stream, const wxString& mimetype );
#endif
virtual bool SaveFile( const wxString& name, int type );
virtual bool SaveFile( const wxString& name, const wxString& mimetype );
#if wxUSE_STREAMS
virtual bool SaveFile( wxOutputStream& stream, int type );
virtual bool SaveFile( wxOutputStream& stream, const wxString& mimetype );
#endif
bool Ok() const;
int GetWidth() const;
int GetHeight() const;
char unsigned *GetData() const;
void SetData( char unsigned *data );
void SetMaskColour( unsigned char r, unsigned char g, unsigned char b );
unsigned char GetMaskRed() const;
unsigned char GetMaskGreen() const;
unsigned char GetMaskBlue() const;
void SetMask( bool mask = TRUE );
bool HasMask() const;
wxImage& operator = (const wxImage& image)
{
if ( (*this) != image )
Ref(image);
return *this;
}
bool operator == (const wxImage& image)
{ return m_refData == image.m_refData; }
bool operator != (const wxImage& image)
{ return m_refData != image.m_refData; }
static wxList& GetHandlers() { return sm_handlers; }
static void AddHandler( wxImageHandler *handler );
static void InsertHandler( wxImageHandler *handler );
static bool RemoveHandler( const wxString& name );
static wxImageHandler *FindHandler( const wxString& name );
static wxImageHandler *FindHandler( const wxString& extension, long imageType );
static wxImageHandler *FindHandler( long imageType );
static wxImageHandler *FindHandlerMime( const wxString& mimetype );
static void CleanUpHandlers();
static void InitStandardHandlers();
// GRG: Dic/99
unsigned long ComputeHistogram( wxHashTable &h );
protected:
static wxList sm_handlers;
};
extern void WXDLLEXPORT wxInitAllImageHandlers();
#endif
// _WX_IMAGE_H_