minimize overlay area to avoid eg scrolling artifacts when using a caret

[wxWidgets.git] / src / msw / statbmp.cpp

diff --git a/src/msw/statbmp.cpp b/src/msw/statbmp.cpp
index e4b2399c4a27e21aeb9c6b0cb7025d4139f190be..26a32bf03b6a2ff351329f10fd539b73d8b2a7c0 100644 (file)
--- a/src/msw/statbmp.cpp
+++ b/src/msw/statbmp.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        statbmp.cpp
+// Name:        src/msw/statbmp.cpp
 // Purpose:     wxStaticBitmap
 // Author:      Julian Smart
 // Modified by:
@@ -17,10 +17,6 @@
 // headers
 // ---------------------------------------------------------------------------
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "statbmp.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -30,14 +26,17 @@
 
 #if wxUSE_STATBMP
 
-#include "wx/window.h"
-#include "wx/msw/private.h"
+#include "wx/statbmp.h"
 
 #ifndef WX_PRECOMP
+    #include "wx/window.h"
     #include "wx/icon.h"
-    #include "wx/statbmp.h"
 #endif
 
+#include "wx/msw/private.h"
+
+#include "wx/sysopt.h"
+
 #include <stdio.h>
 
 // ---------------------------------------------------------------------------
@@ -186,7 +185,9 @@ WXDWORD wxStaticBitmap::MSWGetStyle(long style, WXDWORD *exstyle) const
 
     // we use SS_CENTERIMAGE to prevent the control from resizing the bitmap to
     // fit to its size -- this is unexpected and doesn't happen in other ports
-    msStyle |= SS_CENTERIMAGE;
+    //
+    // and SS_NOTIFY is necessary to receive mouse events
+    msStyle |= SS_CENTERIMAGE | SS_NOTIFY;
 
     return msStyle;
 }
@@ -196,6 +197,34 @@ bool wxStaticBitmap::ImageIsOk() const
     return m_image && m_image->Ok();
 }
 
+wxIcon wxStaticBitmap::GetIcon() const
+{
+    wxCHECK_MSG( m_image, wxIcon(), _T("no image in wxStaticBitmap") );
+
+    // we can't ask for an icon if all we have is a bitmap
+    wxCHECK_MSG( m_isIcon, wxIcon(), _T("no icon in this wxStaticBitmap") );
+
+    return *(wxIcon *)m_image;
+}
+
+wxBitmap wxStaticBitmap::GetBitmap() const
+{
+    if ( m_isIcon )
+    {
+        // don't fail because we might have replaced the bitmap with icon
+        // ourselves internally in ConvertImage() to keep the transparency but
+        // the user code doesn't know about it so it still can use GetBitmap()
+        // to retrieve the bitmap
+        return wxBitmap(GetIcon());
+    }
+    else // we have a bitmap
+    {
+        wxCHECK_MSG( m_image, wxBitmap(), _T("no image in wxStaticBitmap") );
+
+        return *(wxBitmap *)m_image;
+    }
+}
+
 void wxStaticBitmap::Free()
 {
     delete m_image;
@@ -206,7 +235,11 @@ void wxStaticBitmap::Free()
 wxSize wxStaticBitmap::DoGetBestSize() const
 {
     if ( ImageIsOk() )
-        return wxSize(m_image->GetWidth(), m_image->GetHeight());
+    {
+        wxSize best(m_image->GetWidth(), m_image->GetHeight());
+        CacheBestSize(best);
+        return best;
+    }
 
     // this is completely arbitrary
     return wxSize(16, 16);
@@ -237,8 +270,16 @@ void wxStaticBitmap::SetImageNoCopy( wxGDIImage* image)
     LONG style = ::GetWindowLong( (HWND)GetHWND(), GWL_STYLE ) ;
     ::SetWindowLong( (HWND)GetHWND(), GWL_STYLE, ( style & ~( SS_BITMAP|SS_ICON ) ) |
                      ( m_isIcon ? SS_ICON : SS_BITMAP ) );
-    ::SendMessage(GetHwnd(), STM_SETIMAGE,
+    HGDIOBJ oldHandle = (HGDIOBJ)::SendMessage(GetHwnd(), STM_SETIMAGE,
                   m_isIcon ? IMAGE_ICON : IMAGE_BITMAP, (LPARAM)handle);
+    // detect if this is still the handle we passed before or
+    // if the static-control made a copy of the bitmap!
+    if (m_currentHandle != 0 && oldHandle != (HGDIOBJ) m_currentHandle)
+    {
+        // the static control made a copy and we are responsible for deleting it
+        DeleteObject((HGDIOBJ) oldHandle);
+    }
+    m_currentHandle = (WXHANDLE)handle;
 #endif // Win32
 
     if ( ImageIsOk() )