wxWidgets/include/wx/image.h

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/////////////////////////////////////////////////////////////////////////////
// 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;
class WXDLLEXPORT wxImage;
//-----------------------------------------------------------------------------
// wxImageHandler
//-----------------------------------------------------------------------------
class WXDLLEXPORT wxImageHandler: public wxObject
{
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 // wxUSE_STREAMS
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:
#if wxUSE_STREAMS
virtual bool DoCanRead( wxInputStream& stream ) = 0;
#endif // wxUSE_STREAMS
wxString m_name;
wxString m_extension;
wxString m_mime;
long m_type;
private:
DECLARE_CLASS(wxImageHandler)
};
//-----------------------------------------------------------------------------
// wxImage
//-----------------------------------------------------------------------------
class WXDLLEXPORT wxHNode
{
public:
unsigned long index;
unsigned long value;
};
class WXDLLEXPORT wxImage: public wxObject
{
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;
#ifdef __WXGTK__
wxBitmap ConvertToMonoBitmap( unsigned char red, unsigned char green, unsigned char blue );
#endif
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
wxImage& Rescale( int width, int height ) { return *this = Scale(width, height); }
// replace one colour with another
void Replace( unsigned char r1, unsigned char g1, unsigned char b1,
unsigned char r2, unsigned char g2, unsigned char b2 );
// 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;
unsigned long CountColours( unsigned long stopafter = (unsigned long) -1 );
unsigned long ComputeHistogram( wxHashTable &h );
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();
protected:
static wxList sm_handlers;
private:
friend class WXDLLEXPORT wxImageHandler;
DECLARE_DYNAMIC_CLASS(wxImage)
};
extern void WXDLLEXPORT wxInitAllImageHandlers();
//-----------------------------------------------------------------------------
// wxImage handlers
//-----------------------------------------------------------------------------
#include "wx/imagbmp.h"
#include "wx/imagpng.h"
#include "wx/imaggif.h"
#include "wx/imagpcx.h"
#include "wx/imagjpeg.h"
#include "wx/imagtiff.h"
#include "wx/imagpnm.h"
#endif
// _WX_IMAGE_H_