Use const

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

diff --git a/include/wx/msw/dib.h b/include/wx/msw/dib.h
index f4f0bf0a86dc11b4af1c614fad8b71a022cb33ee..9b0751296ff25c1eea481ca6921c518eaadd2c3f 100644 (file)
--- a/include/wx/msw/dib.h
+++ b/include/wx/msw/dib.h
@@ -5,18 +5,20 @@
 // Modified by:
 // Created:     03.03.03 (replaces the old file with the same name)
 // RCS-ID:      $Id$
 // Modified by:
 // Created:     03.03.03 (replaces the old file with the same name)
 // RCS-ID:      $Id$

-// Copyright:   (c) 1997-2003 wxWindows team
+// Copyright:   (c) 1997-2003 wxWidgets team

 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_MSW_DIB_H_
 #define _WX_MSW_DIB_H_
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_MSW_DIB_H_
 #define _WX_MSW_DIB_H_
 

-class WXDLLEXPORT wxBitmap;
-class WXDLLEXPORT wxPalette;
+class WXDLLIMPEXP_FWD_CORE wxBitmap;
+class WXDLLIMPEXP_FWD_CORE wxPalette;

 
 #include "wx/msw/private.h"
 
 
 #include "wx/msw/private.h"
 

+#if wxUSE_WXDIB
+

 // ----------------------------------------------------------------------------
 // wxDIB: represents a DIB section
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxDIB: represents a DIB section
 // ----------------------------------------------------------------------------


@@ -39,6 +41,10 @@ public:
     wxDIB(const wxBitmap& bmp)
         { Init(); (void)Create(bmp); }
 
     wxDIB(const wxBitmap& bmp)
         { Init(); (void)Create(bmp); }
 

+    // create a DIB from the Windows DDB
+    wxDIB(HBITMAP hbmp)
+        { Init(); (void)Create(hbmp); }
+

     // load a DIB from file (any depth is supoprted here unlike above)
     //
     // as above, use IsOk() to see if the bitmap was loaded successfully
     // load a DIB from file (any depth is supoprted here unlike above)
     //
     // as above, use IsOk() to see if the bitmap was loaded successfully


@@ -48,6 +54,7 @@ public:
     // same as the corresponding ctors but with return value
     bool Create(int width, int height, int depth);
     bool Create(const wxBitmap& bmp);
     // same as the corresponding ctors but with return value
     bool Create(int width, int height, int depth);
     bool Create(const wxBitmap& bmp);

+    bool Create(HBITMAP hbmp);

     bool Load(const wxString& filename);
 
     // dtor is not virtual, this class is not meant to be used polymorphically
     bool Load(const wxString& filename);
 
     // dtor is not virtual, this class is not meant to be used polymorphically


@@ -57,10 +64,12 @@ public:
     // operations
     // ----------
 
     // operations
     // ----------
 

-    // create a bitmap compatiblr with the given HDC (or screen by default) and
+#ifndef __WXWINCE__
+    // create a bitmap compatible with the given HDC (or screen by default) and

     // return its handle, the caller is responsible for freeing it (using
     // DeleteObject())
     HBITMAP CreateDDB(HDC hdc = 0) const;
     // return its handle, the caller is responsible for freeing it (using
     // DeleteObject())
     HBITMAP CreateDDB(HDC hdc = 0) const;

+#endif // !__WXWINCE__

 
     // get the handle from the DIB and reset it, i.e. this object won't destroy
     // the DIB after this (but the caller should do it)
 
     // get the handle from the DIB and reset it, i.e. this object won't destroy
     // the DIB after this (but the caller should do it)


@@ -94,15 +103,17 @@ public:
 
     // get raw pointer to bitmap bits, you should know what you do if you
     // decide to use it
 
     // get raw pointer to bitmap bits, you should know what you do if you
     // decide to use it

-    void *GetData() const { DoGetObject(); return m_data; }
+    unsigned char *GetData() const
+        { DoGetObject(); return (unsigned char *)m_data; }

 
 
     // HBITMAP conversion
     // ------------------
 
 
 
     // HBITMAP conversion
     // ------------------
 

-    // these functions are only used by wxWindows internally right now, please
+    // these functions are only used by wxWidgets internally right now, please

     // don't use them directly if possible as they're subject to change
 
     // don't use them directly if possible as they're subject to change
 

+#ifndef __WXWINCE__

     // creates a DDB compatible with the given (or screen) DC from either
     // a plain DIB or a DIB section (in which case the last parameter must be
     // non NULL)
     // creates a DDB compatible with the given (or screen) DC from either
     // a plain DIB or a DIB section (in which case the last parameter must be
     // non NULL)


@@ -120,6 +131,7 @@ public:
     // function (this overload is needed for wxBitmapDataObject code in
     // src/msw/ole/dataobj.cpp)
     static size_t ConvertFromBitmap(BITMAPINFO *pbi, HBITMAP hbmp);
     // function (this overload is needed for wxBitmapDataObject code in
     // src/msw/ole/dataobj.cpp)
     static size_t ConvertFromBitmap(BITMAPINFO *pbi, HBITMAP hbmp);

+#endif // __WXWINCE__

 
 
     // wxImage conversion
 
 
     // wxImage conversion


@@ -151,30 +163,15 @@ public:
 
 private:
     // common part of all ctors
 
 private:
     // common part of all ctors

-    void Init()
-    {
-        m_handle = 0;
-
-        m_data = NULL;
-
-        m_width =
-        m_height =
-        m_depth = 0;
-    }
+    void Init();

 
     // free resources
 
     // free resources

-    void Free()
-    {
-        if ( m_handle )
-        {
-            if ( !::DeleteObject(m_handle) )
-            {
-                wxLogLastError(wxT("DeleteObject(hDIB)"));
-            }
+    void Free();
+
+    // initialize the contents from the provided DDB (Create() must have been
+    // already called)
+    bool CopyFromDDB(HBITMAP hbmp);

 
 

-            Init();
-        }
-    }

 
     // the DIB section handle, 0 if invalid
     HBITMAP m_handle;
 
     // the DIB section handle, 0 if invalid
     HBITMAP m_handle;


@@ -198,6 +195,16 @@ private:
         m_height,
         m_depth;
 
         m_height,
         m_depth;
 

+    // in some cases we could be using a handle which we didn't create and in
+    // this case we shouldn't free it neither -- this flag tell us if this is
+    // the case
+    bool m_ownsHandle;
+
+    // if true, we have alpha, if false we don't (note that we can still have
+    // m_depth == 32 but the last component is then simply padding and not
+    // alpha)
+    bool m_hasAlpha;
+

 
     // DIBs can't be copied
     wxDIB(const wxDIB&);
 
     // DIBs can't be copied
     wxDIB(const wxDIB&);


@@ -208,10 +215,41 @@ private:
 // inline functions implementation
 // ----------------------------------------------------------------------------
 
 // inline functions implementation
 // ----------------------------------------------------------------------------
 

+inline
+void wxDIB::Init()
+{
+    m_handle = 0;
+    m_ownsHandle = true;
+    m_hasAlpha = false;
+
+    m_data = NULL;
+
+    m_width =
+    m_height =
+    m_depth = 0;
+}
+
+inline
+void wxDIB::Free()
+{
+    if ( m_handle && m_ownsHandle )
+    {
+        if ( !::DeleteObject(m_handle) )
+        {
+            wxLogLastError(wxT("DeleteObject(hDIB)"));
+        }
+
+        Init();
+    }
+}
+

 inline wxDIB::~wxDIB()
 {
     Free();
 }
 
 inline wxDIB::~wxDIB()
 {
     Free();
 }
 

+#endif
+    // wxUSE_WXDIB
+

 #endif // _WX_MSW_DIB_H_
 
 #endif // _WX_MSW_DIB_H_