use AlphaBlt() when blitting to a bitmap with alpha channel too (patch 991166)

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

diff --git a/src/msw/enhmeta.cpp b/src/msw/enhmeta.cpp
index 6602ce9a2471df2f6603e5b7075bc91dc4598aa8..1767d356f291bd2610b3d28033d79fa5863b9850 100644 (file)
--- a/src/msw/enhmeta.cpp
+++ b/src/msw/enhmeta.cpp
@@ -6,7 +6,7 @@
 // Created:     13.01.00
 // RCS-ID:      $Id$
 // Copyright:   (c) 2000 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
@@ -17,7 +17,7 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
     #pragma implementation "enhmeta.h"
 #endif
 
@@ -36,6 +36,7 @@
 #endif //WX_PRECOMP
 
 #include "wx/metafile.h"
+#include "wx/clipbrd.h"
 
 #include "wx/msw/private.h"
 
@@ -102,7 +103,7 @@ void wxEnhMetaFile::Free()
 
 bool wxEnhMetaFile::Play(wxDC *dc, wxRect *rectBound)
 {
-    wxCHECK_MSG( Ok(), FALSE, _T("can't play invalid enhanced metafile") );
+    wxCHECK_MSG( Ok(), false, _T("can't play invalid enhanced metafile") );
     wxCHECK_MSG( dc, FALSE, _T("invalid wxDC in wxEnhMetaFile::Play") );
 
     RECT rect;
@@ -127,10 +128,10 @@ bool wxEnhMetaFile::Play(wxDC *dc, wxRect *rectBound)
     {
         wxLogLastError(_T("PlayEnhMetaFile"));
 
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 wxSize wxEnhMetaFile::GetSize() const
@@ -161,6 +162,18 @@ wxSize wxEnhMetaFile::GetSize() const
     return size;
 }
 
+bool wxEnhMetaFile::SetClipboard(int WXUNUSED(width), int WXUNUSED(height))
+{
+#if wxUSE_DRAG_AND_DROP
+    wxCHECK_MSG( m_hMF, FALSE, _T("can't copy invalid metafile to clipboard") );
+
+    return wxTheClipboard->AddData(new wxEnhMetaFileDataObject(*this));
+#else // !wxUSE_DRAG_AND_DROP
+    wxFAIL_MSG(_T("not implemented"));
+    return false;
+#endif // wxUSE_DRAG_AND_DROP/!wxUSE_DRAG_AND_DROP
+}
+
 // ----------------------------------------------------------------------------
 // wxEnhMetaFileDC
 // ----------------------------------------------------------------------------
@@ -170,8 +183,8 @@ wxEnhMetaFileDC::wxEnhMetaFileDC(const wxString& filename,
                                  const wxString& description)
 {
     ScreenHDC hdcRef;
-
-    RECT rect, *pRect;
+    RECT rect;
+    RECT *pRect;
     if ( width && height )
     {
         rect.top =
@@ -221,6 +234,8 @@ wxEnhMetaFileDC::~wxEnhMetaFileDC()
     m_hDC = 0;
 }
 
+#if wxUSE_DRAG_AND_DROP
+
 // ----------------------------------------------------------------------------
 // wxEnhMetaFileDataObject
 // ----------------------------------------------------------------------------
@@ -261,7 +276,7 @@ size_t wxEnhMetaFileDataObject::GetDataSize(const wxDataFormat& format) const
 
 bool wxEnhMetaFileDataObject::GetDataHere(const wxDataFormat& format, void *buf) const
 {
-    wxCHECK_MSG( m_metafile.Ok(), FALSE, _T("copying invalid enh metafile") );
+    wxCHECK_MSG( m_metafile.Ok(), false, _T("copying invalid enh metafile") );
 
     HENHMETAFILE hEMF = (HENHMETAFILE)m_metafile.GetHENHMETAFILE();
 
@@ -272,7 +287,7 @@ bool wxEnhMetaFileDataObject::GetDataHere(const wxDataFormat& format, void *buf)
         {
             wxLogLastError(_T("CopyEnhMetaFile"));
 
-            return FALSE;
+            return false;
         }
 
         *(HENHMETAFILE *)buf = hEMFCopy;
@@ -298,7 +313,7 @@ bool wxEnhMetaFileDataObject::GetDataHere(const wxDataFormat& format, void *buf)
 
             free(bits);
 
-            return FALSE;
+            return false;
         }
 
         // and finally convert them to the WMF
@@ -308,7 +323,7 @@ bool wxEnhMetaFileDataObject::GetDataHere(const wxDataFormat& format, void *buf)
         {
             wxLogLastError(_T("SetMetaFileBitsEx"));
 
-            return FALSE;
+            return false;
         }
 
         METAFILEPICT *mfpict = (METAFILEPICT *)buf;
@@ -322,7 +337,7 @@ bool wxEnhMetaFileDataObject::GetDataHere(const wxDataFormat& format, void *buf)
         PixelToHIMETRIC(&mfpict->xExt, &mfpict->yExt);
     }
 
-    return TRUE;
+    return true;
 }
 
 bool wxEnhMetaFileDataObject::SetData(const wxDataFormat& format,
@@ -356,7 +371,7 @@ bool wxEnhMetaFileDataObject::SetData(const wxDataFormat& format,
 
             free(bits);
 
-            return FALSE;
+            return false;
         }
 
         ScreenHDC hdcRef;
@@ -368,13 +383,55 @@ bool wxEnhMetaFileDataObject::SetData(const wxDataFormat& format,
         {
             wxLogLastError(_T("SetWinMetaFileBits"));
 
-            return FALSE;
+            return false;
         }
     }
 
     m_metafile.SetHENHMETAFILE((WXHANDLE)hEMF);
 
-    return TRUE;
+    return true;
+}
+
+// ----------------------------------------------------------------------------
+// wxEnhMetaFileSimpleDataObject
+// ----------------------------------------------------------------------------
+
+size_t wxEnhMetaFileSimpleDataObject::GetDataSize() const
+{
+    // we pass data by handle and not HGLOBAL
+    return 0u;
+}
+
+bool wxEnhMetaFileSimpleDataObject::GetDataHere(void *buf) const
+{
+    wxCHECK_MSG( m_metafile.Ok(), false, _T("copying invalid enh metafile") );
+
+    HENHMETAFILE hEMF = (HENHMETAFILE)m_metafile.GetHENHMETAFILE();
+
+    HENHMETAFILE hEMFCopy = ::CopyEnhMetaFile(hEMF, NULL);
+    if ( !hEMFCopy )
+    {
+        wxLogLastError(_T("CopyEnhMetaFile"));
+
+        return false;
+    }
+
+    *(HENHMETAFILE *)buf = hEMFCopy;
+    return true;
+}
+
+bool wxEnhMetaFileSimpleDataObject::SetData(size_t WXUNUSED(len),
+                                            const void *buf)
+{
+    HENHMETAFILE hEMF = *(HENHMETAFILE *)buf;
+
+    wxCHECK_MSG( hEMF, FALSE, _T("pasting invalid enh metafile") );
+    m_metafile.SetHENHMETAFILE((WXHANDLE)hEMF);
+
+    return true;
 }
 
+
+#endif // wxUSE_DRAG_AND_DROP
+
 #endif // wxUSE_ENH_METAFILE