wxWidgets/include/wx/x11/bitmap.h

/////////////////////////////////////////////////////////////////////////////
// Name:        bitmap.h
// Purpose:     wxBitmap class
// Author:      Julian Smart
// Modified by:
// Created:     17/09/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_BITMAP_H_
#define _WX_BITMAP_H_

#ifdef __GNUG__
#pragma interface "bitmap.h"
#endif

#include "wx/gdiobj.h"
#include "wx/gdicmn.h"
#include "wx/palette.h"

// Bitmap
class WXDLLEXPORT wxDC;
class WXDLLEXPORT wxControl;
class WXDLLEXPORT wxBitmap;
class WXDLLEXPORT wxBitmapHandler;
class WXDLLEXPORT wxIcon;
class WXDLLEXPORT wxCursor;
class WXDLLEXPORT wxImage;

// A mask is a mono bitmap used for drawing bitmaps
// transparently.
class WXDLLEXPORT wxMask: public wxObject
{
    DECLARE_DYNAMIC_CLASS(wxMask)
        
public:
    wxMask();
    
    // Construct a mask from a bitmap and a colour indicating
    // the transparent area
    wxMask(const wxBitmap& bitmap, const wxColour& colour);
    
    // Construct a mask from a bitmap and a palette index indicating
    // the transparent area
    wxMask(const wxBitmap& bitmap, int paletteIndex);
    
    // Construct a mask from a mono bitmap (copies the bitmap).
    wxMask(const wxBitmap& bitmap);
    
    ~wxMask();
    
    bool Create(const wxBitmap& bitmap, const wxColour& colour);
    bool Create(const wxBitmap& bitmap, int paletteIndex);
    bool Create(const wxBitmap& bitmap);
    
    WXPixmap GetPixmap() const { return m_pixmap; }
    void SetPixmap(WXPixmap pixmap) { m_pixmap = pixmap; }
    
protected:
    WXPixmap      m_pixmap;
};

class WXDLLEXPORT wxBitmapRefData: public wxGDIRefData
{
    friend class WXDLLEXPORT wxBitmap;
    friend class WXDLLEXPORT wxIcon;
    friend class WXDLLEXPORT wxCursor;
public:
    wxBitmapRefData();
    ~wxBitmapRefData();
    
public:
    int               m_width;
    int               m_height;
    int               m_depth;
    bool              m_ok;
    int               m_numColors;
    wxPalette         m_bitmapPalette;
    int               m_quality;
    
    wxMask *          m_bitmapMask; // Optional mask
    
    // Motif implementation
public:
    WXPixmap          m_pixmap;
    WXDisplay*        m_display;
    bool              m_freePixmap;
    unsigned long*    m_freeColors;
    long              m_freeColorsCount;
};

#define M_BITMAPDATA ((wxBitmapRefData *)m_refData)

class WXDLLEXPORT wxBitmapHandler: public wxObject
{
    DECLARE_DYNAMIC_CLASS(wxBitmapHandler)
public:
    wxBitmapHandler() { m_name = ""; m_extension = ""; m_type = 0; };
    
    virtual bool Create(wxBitmap *bitmap, void *data, long flags, int width, int height, int depth = 1);
    virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
        int desiredWidth, int desiredHeight);
    virtual bool SaveFile(wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette = NULL);
    
    void SetName(const wxString& name) { m_name = name; }
    void SetExtension(const wxString& ext) { m_extension = ext; }
    void SetType(long type) { m_type = type; }
    wxString GetName() const { return m_name; }
    wxString GetExtension() const { return m_extension; }
    long GetType() const { return m_type; }
protected:
    wxString  m_name;
    wxString  m_extension;
    long      m_type;
};

#define M_BITMAPHANDLERDATA ((wxBitmapRefData *)bitmap->GetRefData())

class WXDLLEXPORT wxBitmap: public wxGDIObject
{
    DECLARE_DYNAMIC_CLASS(wxBitmap)
        
        friend class WXDLLEXPORT wxBitmapHandler;
    
public:
    wxBitmap(); // Platform-specific
    
    // Copy constructors
    wxBitmap(const wxBitmap& bitmap)
    { Ref(bitmap); }
    
    // Initialize with raw XBM data
    wxBitmap(const char bits[], int width, int height, int depth = 1);
    
    // from XPM
    wxBitmap(const char **data) { (void) Create((void *)data, wxBITMAP_TYPE_XPM_DATA, 0, 0, 0); }
    wxBitmap(char **data) { (void) Create((void *)data, wxBITMAP_TYPE_XPM_DATA, 0, 0, 0); }
    
    // Load a file or resource
    wxBitmap(const wxString& name, long type = wxBITMAP_TYPE_XPM);
    
    // Constructor for generalised creation from data
    wxBitmap(void *data, long type, int width, int height, int depth = 1);
    
    // If depth is omitted, will create a bitmap compatible with the display
    wxBitmap(int width, int height, int depth = -1);
    
    // Convert from wxImage:  
    wxBitmap(const wxImage& image, int depth = -1) { (void)CreateFromImage(image, depth); }
    
    ~wxBitmap();
    
    virtual bool Create(int width, int height, int depth = -1);
    virtual bool Create(void *data, long type, int width, int height, int depth = 1);
    
    wxBitmap GetSubBitmap( const wxRect& rect ) const;
    
    virtual bool LoadFile(const wxString& name, long type = wxBITMAP_TYPE_XPM);
    virtual bool SaveFile(const wxString& name, int type, const wxPalette *cmap = NULL);
    
    wxImage ConvertToImage() const;

    bool CopyFromIcon(const wxIcon& icon);
    
    bool Ok() const { return (M_BITMAPDATA && M_BITMAPDATA->m_ok); }
    int GetWidth() const { return (M_BITMAPDATA ? M_BITMAPDATA->m_width : 0); }
    int GetHeight() const { return (M_BITMAPDATA ? M_BITMAPDATA->m_height : 0); }
    int GetDepth() const { return (M_BITMAPDATA ? M_BITMAPDATA->m_depth : 0); }
    int GetQuality() const { return (M_BITMAPDATA ? M_BITMAPDATA->m_quality : 0); }
    void SetWidth(int w);
    void SetHeight(int h);
    void SetDepth(int d);
    void SetQuality(int q);
    void SetOk(bool isOk);
    
    wxPalette* GetPalette() const { return (M_BITMAPDATA ? (& M_BITMAPDATA->m_bitmapPalette) : (wxPalette*) NULL); }
    void SetPalette(const wxPalette& palette);
    
    wxMask *GetMask() const { return (M_BITMAPDATA ? M_BITMAPDATA->m_bitmapMask : (wxMask*) NULL); }
    void SetMask(wxMask *mask) ;
    
    wxBitmap& operator = (const wxBitmap& bitmap) { if (*this == bitmap) return (*this); Ref(bitmap); return *this; }
    bool operator == (const wxBitmap& bitmap) const { return m_refData == bitmap.m_refData; }
    bool operator != (const wxBitmap& bitmap) const { return m_refData != bitmap.m_refData; }
    
    // Format handling
    static wxList& GetHandlers() { return sm_handlers; }
    static void AddHandler(wxBitmapHandler *handler);
    static void InsertHandler(wxBitmapHandler *handler);
    static bool RemoveHandler(const wxString& name);
    static wxBitmapHandler *FindHandler(const wxString& name);
    static wxBitmapHandler *FindHandler(const wxString& extension, long bitmapType);
    static wxBitmapHandler *FindHandler(long bitmapType);
    
    static void InitStandardHandlers();
    static void CleanUpHandlers();
    
    // Motif implementation
public:
    WXDisplay* GetDisplay() const { return M_BITMAPDATA->m_display; }
    WXPixmap GetPixmap() const { return (WXPixmap) M_BITMAPDATA->m_pixmap; }
    void SetPixmapNull() { M_BITMAPDATA->m_pixmap = 0; }
    
protected:
    static wxList sm_handlers;
    
protected:
    bool CreateFromImage(const wxImage& image, int depth);    
};

// Creates a bitmap with transparent areas drawn in
// the given colour.
wxBitmap wxCreateMaskedBitmap(const wxBitmap& bitmap, wxColour& colour);

#endif
// _WX_BITMAP_H_