added selecting-while-dragging

[wxWidgets.git] / include / wx / msw / bitmap.h

diff --git a/include/wx/msw/bitmap.h b/include/wx/msw/bitmap.h
index a17235451cb2fbe7eae4a30e783886b5776762e2..c545d275ec321b5bf78d9bf0e08a75d39b3ce2d0 100644 (file)
--- a/include/wx/msw/bitmap.h
+++ b/include/wx/msw/bitmap.h
@@ -1,213 +1,299 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        bitmap.h
+// Name:        wx/msw/bitmap.h

 // Purpose:     wxBitmap class
 // Author:      Julian Smart
 // Modified by:
 // Created:     01/02/97
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart
 // Purpose:     wxBitmap class
 // Author:      Julian Smart
 // Modified by:
 // Created:     01/02/97
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart

-// Licence:    wxWindows licence
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_BITMAP_H_
 #define _WX_BITMAP_H_
 
 #ifdef __GNUG__
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_BITMAP_H_
 #define _WX_BITMAP_H_
 
 #ifdef __GNUG__

-#pragma interface "bitmap.h"
+    #pragma interface "bitmap.h"

 #endif
 
 #endif
 

-#include "wx/gdiobj.h"
+#include "wx/msw/gdiimage.h"

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

-// Bitmap
-class WXDLLEXPORT wxDC;
-class WXDLLEXPORT wxControl;

 class WXDLLEXPORT wxBitmap;
 class WXDLLEXPORT wxBitmapHandler;
 class WXDLLEXPORT wxBitmap;
 class WXDLLEXPORT wxBitmapHandler;

-class WXDLLEXPORT wxIcon;
-class WXDLLEXPORT wxCursor;
+class WXDLLEXPORT wxBitmapRefData;

 class WXDLLEXPORT wxControl;
 class WXDLLEXPORT wxControl;

+class WXDLLEXPORT wxCursor;
+class WXDLLEXPORT wxDC;
+class WXDLLEXPORT wxDIB;
+class WXDLLEXPORT wxIcon;
+class WXDLLEXPORT wxImage;
+class WXDLLEXPORT wxMask;
+class WXDLLEXPORT wxPalette;
+class WXDLLEXPORT wxPixelDataBase;

 
 

-// A mask is a mono bitmap used for drawing bitmaps
-// transparently.
-class WXDLLEXPORT wxMask: public wxObject
-{
-  DECLARE_DYNAMIC_CLASS(wxMask)
+// ----------------------------------------------------------------------------
+// wxBitmap: a mono or colour bitmap
+// ----------------------------------------------------------------------------

 
 

+class WXDLLEXPORT wxBitmap : public wxGDIImage
+{

 public:
 public:

-  wxMask(void);
+    // default ctor creates an invalid bitmap, you must Create() it later
+    wxBitmap() { Init(); }

 
 

-  // Construct a mask from a bitmap and a colour indicating
-  // the transparent area
-  wxMask(const wxBitmap& bitmap, const wxColour& colour);
+    // Copy constructors
+    wxBitmap(const wxBitmap& bitmap) { Init(); Ref(bitmap); }

 
 

-  // Construct a mask from a bitmap and a palette index indicating
-  // the transparent area
-  wxMask(const wxBitmap& bitmap, int paletteIndex);
+    // Initialize with raw data
+    wxBitmap(const char bits[], int width, int height, int depth = 1);

 
 

-  // Construct a mask from a mono bitmap (copies the bitmap).
-  wxMask(const wxBitmap& bitmap);
+    // Initialize with XPM data
+    wxBitmap(const char **data) { CreateFromXpm(data); }
+    wxBitmap(char **data) { CreateFromXpm((const char **)data); }

 
 

-  ~wxMask(void);
+    // Load a file or resource
+    wxBitmap(const wxString& name, wxBitmapType type = wxBITMAP_TYPE_BMP_RESOURCE);

 
 

-  bool Create(const wxBitmap& bitmap, const wxColour& colour);
-  bool Create(const wxBitmap& bitmap, int paletteIndex);
-  bool Create(const wxBitmap& bitmap);
+    // New constructor for generalised creation from data
+    wxBitmap(void *data, long type, int width, int height, int depth = 1);

 
 

-  // Implementation
-  inline WXHBITMAP GetMaskBitmap(void) const { return m_maskBitmap; }
-  inline void SetMaskBitmap(WXHBITMAP bmp) { m_maskBitmap = bmp; }
-protected:
-  WXHBITMAP m_maskBitmap;
-};
+    // Create a new, uninitialized bitmap of the given size and depth (if it
+    // is omitted, will create a bitmap compatible with the display)
+    //
+    // NB: this ctor will create a DIB for 24 and 32bpp bitmaps, use ctor
+    //     taking a DC argument if you want to force using DDB in this case
+    wxBitmap(int width, int height, int depth = -1);

 
 

-class WXDLLEXPORT wxBitmapRefData: public wxGDIRefData
-{
-    friend class WXDLLEXPORT wxBitmap;
-    friend class WXDLLEXPORT wxIcon;
-    friend class WXDLLEXPORT wxCursor;
-public:
-    wxBitmapRefData(void);
-    ~wxBitmapRefData(void);
+    // Create a bitmap compatible with the given DC
+    wxBitmap(int width, int height, const wxDC& dc);

 
 

-public:
-  int           m_width;
-  int           m_height;
-  int           m_depth;
-  bool          m_ok;
-  int           m_numColors;
-  wxPalette     m_bitmapPalette;
-  int           m_quality;
-
-#ifdef __WXMSW__
-  WXHBITMAP     m_hBitmap;
-  wxDC *        m_selectedInto; // So bitmap knows whether it's been selected into
-                      // a device context (for error checking)
-  wxMask *      m_bitmapMask; // Option mask
-#endif
-};
+#if wxUSE_IMAGE
+    // Convert from wxImage
+    wxBitmap(const wxImage& image, int depth = -1)
+        { (void)CreateFromImage(image, depth); }

 
 

-#define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
+    // Create a DDB compatible with the given DC from wxImage
+    wxBitmap(const wxImage& image, const wxDC& dc)
+        { (void)CreateFromImage(image, dc); }
+#endif // wxUSE_IMAGE
+
+    // we must have this, otherwise icons are silently copied into bitmaps using
+    // the copy ctor but the resulting bitmap is invalid!
+    wxBitmap(const wxIcon& icon) { Init(); CopyFromIcon(icon); }
+
+    wxBitmap& operator=(const wxBitmap& bitmap)
+    {
+        if ( m_refData != bitmap.m_refData )
+            Ref(bitmap);
+        return *this;
+    }
+
+    wxBitmap& operator=(const wxIcon& icon)
+    {
+        (void)CopyFromIcon(icon);
+
+        return *this;
+    }
+
+    wxBitmap& operator=(const wxCursor& cursor)
+    {
+        (void)CopyFromCursor(cursor);
+
+        return *this;
+    }
+
+    virtual ~wxBitmap();
+
+#if wxUSE_IMAGE
+    wxImage ConvertToImage() const;
+#endif // wxUSE_IMAGE
+
+    // get the given part of bitmap
+    wxBitmap GetSubBitmap( const wxRect& rect ) const;
+
+    // copies the contents and mask of the given (colour) icon to the bitmap
+    bool CopyFromIcon(const wxIcon& icon);
+
+    // copies the contents and mask of the given cursor to the bitmap
+    bool CopyFromCursor(const wxCursor& cursor);
+
+    // copies from a device independent bitmap
+    bool CopyFromDIB(const wxDIB& dib);
+
+    virtual bool Create(int width, int height, int depth = -1);
+    virtual bool Create(int width, int height, const wxDC& dc);
+    virtual bool Create(void *data, long type, int width, int height, int depth = 1);
+    virtual bool LoadFile(const wxString& name, long type = wxBITMAP_TYPE_BMP_RESOURCE);
+    virtual bool SaveFile(const wxString& name, int type, const wxPalette *cmap = NULL);
+
+    wxBitmapRefData *GetBitmapData() const
+        { return (wxBitmapRefData *)m_refData; }
+
+    // raw bitmap access support functions
+    void *GetRawData(wxPixelDataBase& data, int bpp);
+    void UngetRawData(wxPixelDataBase& data);
+
+#if wxUSE_PALETTE
+    wxPalette* GetPalette() const;
+    void SetPalette(const wxPalette& palette);
+#endif // wxUSE_PALETTE
+
+    wxMask *GetMask() const;
+    void SetMask(wxMask *mask);
+
+    bool operator==(const wxBitmap& bitmap) const { return m_refData == bitmap.m_refData; }
+    bool operator!=(const wxBitmap& bitmap) const { return m_refData != bitmap.m_refData; }
+
+    // these functions are internal and shouldn't be used, they risk to
+    // disappear in the future
+    bool HasAlpha() const;
+    void UseAlpha();
+
+#if WXWIN_COMPATIBILITY_2_4
+    // these functions do nothing and are only there for backwards
+    // compatibility
+    wxDEPRECATED( int GetQuality() const );
+    wxDEPRECATED( void SetQuality(int quality) );
+#endif // WXWIN_COMPATIBILITY_2_4
+
+#if WXWIN_COMPATIBILITY_2
+    void SetOk(bool isOk);
+#endif // WXWIN_COMPATIBILITY_2
+
+#if WXWIN_COMPATIBILITY
+#if wxUSE_PALETTE
+    wxPalette *GetColourMap() const { return GetPalette(); }
+    void SetColourMap(wxPalette *cmap) { SetPalette(*cmap); };
+#endif // wxUSE_PALETTE
+#endif // WXWIN_COMPATIBILITY
+
+    // implementation only from now on
+    // -------------------------------

 
 

-class WXDLLEXPORT wxBitmapHandler: public wxObject
-{
-  DECLARE_DYNAMIC_CLASS(wxBitmapHandler)

 public:
 public:

-  wxBitmapHandler(void) { 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);
-
-  inline void SetName(const wxString& name) { m_name = name; }
-  inline void SetExtension(const wxString& ext) { m_extension = ext; }
-  inline void SetType(long type) { m_type = type; }
-  inline wxString GetName(void) const { return m_name; }
-  inline wxString GetExtension(void) const { return m_extension; }
-  inline long GetType(void) const { return m_type; }
+    void SetHBITMAP(WXHBITMAP bmp) { SetHandle((WXHANDLE)bmp); }
+    WXHBITMAP GetHBITMAP() const { return (WXHBITMAP)GetHandle(); }
+
+#ifdef __WXDEBUG__
+    void SetSelectedInto(wxDC *dc);
+    wxDC *GetSelectedInto() const;
+#endif // __WXDEBUG__
+

 protected:
 protected:

-  wxString  m_name;
-  wxString  m_extension;
-  long      m_type;
+    // common part of all ctors
+    void Init();
+
+    virtual wxGDIImageRefData *CreateData() const;
+
+    // creates the bitmap from XPM data, supposed to be called from ctor
+    bool CreateFromXpm(const char **bits);
+
+    // creates an uninitialized bitmap, called from Create()s above
+    bool DoCreate(int w, int h, int depth, WXHDC hdc);
+
+#if wxUSE_IMAGE
+    // creates the bitmap from wxImage, supposed to be called from ctor
+    bool CreateFromImage(const wxImage& image, int depth);
+
+    // creates a DDB from wxImage, supposed to be called from ctor
+    bool CreateFromImage(const wxImage& image, const wxDC& dc);
+
+    // common part of the 2 methods above (hdc may be 0)
+    bool CreateFromImage(const wxImage& image, int depth, WXHDC hdc);
+#endif // wxUSE_IMAGE
+
+private:
+#ifdef __WIN32__
+    // common part of CopyFromIcon/CopyFromCursor for Win32
+    bool CopyFromIconOrCursor(const wxGDIImage& icon);
+#endif // __WIN32__
+
+    DECLARE_DYNAMIC_CLASS(wxBitmap)

 };
 };

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

 
 

-class WXDLLEXPORT wxBitmap: public wxGDIObject
+// ----------------------------------------------------------------------------
+// wxMask: a mono bitmap used for drawing bitmaps transparently.
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxMask : public wxObject

 {
 {

-  DECLARE_DYNAMIC_CLASS(wxBitmap)
+public:
+    wxMask();

 
 

-  friend class WXDLLEXPORT wxBitmapHandler;
+    // Construct a mask from a bitmap and a colour indicating the transparent
+    // area
+    wxMask(const wxBitmap& bitmap, const wxColour& colour);

 
 

-public:
-  wxBitmap(void); // Platform-specific
-
-  // Copy constructors
-  inline wxBitmap(const wxBitmap& bitmap)
-  { Ref(bitmap); if ( wxTheBitmapList ) wxTheBitmapList->AddBitmap(this); }
-
-  // Initialize with raw data
-  wxBitmap(const char bits[], int width, int height, int depth = 1);
-
-  // Initialize with XPM data
-  wxBitmap(char **data, wxControl *anItem = NULL);
-
-  // Load a file or resource
-  wxBitmap(const wxString& name, long type = wxBITMAP_TYPE_BMP_RESOURCE);
-
-  // New 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);
-  ~wxBitmap(void);
-
-  virtual bool Create(int width, int height, int depth = -1);
-  virtual bool Create(void *data, long type, int width, int height, int depth = 1);
-  virtual bool LoadFile(const wxString& name, long type = wxBITMAP_TYPE_BMP_RESOURCE);
-  virtual bool SaveFile(const wxString& name, int type, const wxPalette *cmap = NULL);
-
-  inline bool Ok(void) const { return (M_BITMAPDATA && M_BITMAPDATA->m_ok); }
-  inline int GetWidth(void) const { return (M_BITMAPDATA ? M_BITMAPDATA->m_width : 0); }
-  inline int GetHeight(void) const { return (M_BITMAPDATA ? M_BITMAPDATA->m_height : 0); }
-  inline int GetDepth(void) const { return (M_BITMAPDATA ? M_BITMAPDATA->m_depth : 0); }
-  inline int GetQuality(void) 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);
-#if WXWIN_COMPATIBILITY
-  inline wxPalette *GetColourMap(void) const { return GetPalette(); }
-  void SetColourMap(wxPalette *cmap) { SetPalette(*cmap); };
-#endif
-  inline wxPalette* GetPalette(void) const { return (M_BITMAPDATA ? (& M_BITMAPDATA->m_bitmapPalette) : (wxPalette*) NULL); }
-  void SetPalette(const wxPalette& palette);
+    // 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);

 
 

-  inline wxMask *GetMask(void) const { return (M_BITMAPDATA ? M_BITMAPDATA->m_bitmapMask : (wxMask*) NULL); }
-  void SetMask(wxMask *mask) ;
+    // construct a mask from the givne bitmap handle
+    wxMask(WXHBITMAP hbmp) { m_maskBitmap = hbmp; }

 
 

-  inline wxBitmap& operator = (const wxBitmap& bitmap) { if (*this == bitmap) return (*this); Ref(bitmap); return *this; }
+    virtual ~wxMask();

 
 

-  inline bool operator == (const wxBitmap& bitmap) { return m_refData == bitmap.m_refData; }
-  inline bool operator != (const wxBitmap& bitmap) { return m_refData != bitmap.m_refData; }
+    bool Create(const wxBitmap& bitmap, const wxColour& colour);
+    bool Create(const wxBitmap& bitmap, int paletteIndex);
+    bool Create(const wxBitmap& bitmap);

 
 

-  // Format handling
-  static inline wxList& GetHandlers(void) { 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);
+    // Implementation
+    WXHBITMAP GetMaskBitmap() const { return m_maskBitmap; }
+    void SetMaskBitmap(WXHBITMAP bmp) { m_maskBitmap = bmp; }

 
 

-  static void InitStandardHandlers(void);
-  static void CleanUpHandlers(void);

 protected:
 protected:

-  static wxList sm_handlers;
+    WXHBITMAP m_maskBitmap;

 
 

-  // Implementation
-public:
-  void SetHBITMAP(WXHBITMAP bmp);
-  inline WXHBITMAP GetHBITMAP(void) const { return (M_BITMAPDATA ? M_BITMAPDATA->m_hBitmap : 0); }
-  inline void SetSelectedInto(wxDC *dc) { if (M_BITMAPDATA) M_BITMAPDATA->m_selectedInto = dc; }
-  inline wxDC *GetSelectedInto(void) const { return (M_BITMAPDATA ? M_BITMAPDATA->m_selectedInto : (wxDC*) NULL); }
-  bool FreeResource(bool force = FALSE);
-
-  // Creates a bitmap that matches the device context's depth, from
-  // an arbitray bitmap. At present, the original bitmap must have an
-  // associated palette. (TODO: use a default palette if no palette exists.)
-  // This function is necessary for you to Blit an arbitrary bitmap (which may have
-  // the wrong depth). wxDC::SelectObject will compare the depth of the bitmap
-  // with the DC's depth, and create a new bitmap if the depths differ.
-  // Eventually we should perhaps make this a public API function so that
-  // an app can efficiently produce bitmaps of the correct depth.
-  // The Windows solution is to use SetDibBits to blit an arbotrary DIB directly to a DC, but
-  // this is too Windows-specific, hence this solution of quietly converting the wxBitmap.
-  // Contributed by Frederic Villeneuve <frederic.villeneuve@natinst.com>
-  wxBitmap GetBitmapForDC(wxDC& dc) const;
+    DECLARE_DYNAMIC_CLASS(wxMask)
+};

 
 

+// ----------------------------------------------------------------------------
+// wxBitmapHandler is a class which knows how to load/save bitmaps to/from file
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxBitmapHandler : public wxGDIImageHandler
+{
+public:
+    wxBitmapHandler() { m_type = wxBITMAP_TYPE_INVALID; }
+    wxBitmapHandler(const wxString& name, const wxString& ext, long type)
+        : wxGDIImageHandler(name, ext, type)
+    {
+    }
+
+    // keep wxBitmapHandler derived from wxGDIImageHandler compatible with the
+    // old class which worked only with bitmaps
+    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);
+
+    virtual bool Create(wxGDIImage *image,
+                        void *data,
+                        long flags,
+                        int width, int height, int depth = 1);
+    virtual bool Load(wxGDIImage *image,
+                      const wxString& name,
+                      long flags,
+                      int desiredWidth, int desiredHeight);
+    virtual bool Save(wxGDIImage *image,
+                      const wxString& name,
+                      int type);
+
+private:
+    DECLARE_DYNAMIC_CLASS(wxBitmapHandler)

 };
 
 #endif
 };
 
 #endif