Committed William Osborne's wxPalmOS port

[wxWidgets.git] / src / palmos / dib.cpp

diff --git a/src/palmos/dib.cpp b/src/palmos/dib.cpp
new file mode 100644 (file)
index 0000000..ee9ae2d
--- /dev/null
+++ b/src/palmos/dib.cpp
@@ -0,0 +1,170 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        src/palmos/dib.cpp
+// Purpose:     implements wxDIB class
+// Author:      William Osborne
+// Modified by:
+// Created:     10.13.04
+// RCS-ID:      $Id: 
+// Copyright:   (c) William Osborne
+// License:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+    #include "wx/string.h"
+    #include "wx/log.h"
+#endif //WX_PRECOMP
+
+#if wxUSE_WXDIB
+
+#include "wx/bitmap.h"
+#include "wx/intl.h"
+#include "wx/file.h"
+
+#include "wx/image.h"
+#include "wx/palmos/dib.h"
+
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
+
+// calculate the number of palette entries needed for the bitmap with this
+// number of bits per pixel
+static inline WORD GetNumberOfColours(WORD bitsPerPixel)
+{
+    // only 1, 4 and 8bpp bitmaps use palettes (well, they could be used with
+    // 24bpp ones too but we don't support this as I think it's quite uncommon)
+    return bitsPerPixel <= 8 ? 1 << bitsPerPixel : 0;
+}
+
+// wrapper around ::GetObject() for DIB sections
+static inline bool GetDIBSection(HBITMAP hbmp, DIBSECTION *ds)
+{
+    // note that at least under Win9x (this doesn't seem to happen under Win2K
+    // but this doesn't mean anything, of course), GetObject() may return
+    // sizeof(DIBSECTION) for a bitmap which is *not* a DIB section and the way
+    // to check for it is by looking at the bits pointer
+    return ::GetObject(hbmp, sizeof(DIBSECTION), ds) == sizeof(DIBSECTION) &&
+                ds->dsBm.bmBits;
+}
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxDIB creation
+// ----------------------------------------------------------------------------
+
+bool wxDIB::Create(int width, int height, int depth)
+{
+    return false;
+}
+
+bool wxDIB::Create(const wxBitmap& bmp)
+{
+    return false;
+}
+
+bool wxDIB::CopyFromDDB(HBITMAP hbmp)
+{
+    return false;
+}
+
+
+// ----------------------------------------------------------------------------
+// Loading/saving the DIBs
+// ----------------------------------------------------------------------------
+
+bool wxDIB::Load(const wxString& filename)
+{
+    return false;
+}
+
+bool wxDIB::Save(const wxString& filename)
+{
+    return false;
+}
+
+// ----------------------------------------------------------------------------
+// wxDIB accessors
+// ----------------------------------------------------------------------------
+
+void wxDIB::DoGetObject() const
+{
+}
+
+// ----------------------------------------------------------------------------
+// DDB <-> DIB conversions
+// ----------------------------------------------------------------------------
+
+HBITMAP wxDIB::CreateDDB(HDC hdc) const
+{
+    return 0;
+}
+
+/* static */
+HBITMAP wxDIB::ConvertToBitmap(const BITMAPINFO *pbmi, HDC hdc, void *bits)
+{
+    return 0;
+}
+
+/* static */
+size_t wxDIB::ConvertFromBitmap(BITMAPINFO *pbi, HBITMAP hbmp)
+{
+    return 0;
+}
+
+/* static */
+HGLOBAL wxDIB::ConvertFromBitmap(HBITMAP hbmp)
+{
+    return NULL;
+}
+
+// ----------------------------------------------------------------------------
+// palette support
+// ----------------------------------------------------------------------------
+
+#if wxUSE_PALETTE
+
+wxPalette *wxDIB::CreatePalette() const
+{
+    return NULL;
+}
+
+#endif // wxUSE_PALETTE
+
+// ----------------------------------------------------------------------------
+// wxImage support
+// ----------------------------------------------------------------------------
+
+#if wxUSE_IMAGE
+
+bool wxDIB::Create(const wxImage& image)
+{
+    return false;
+}
+
+wxImage wxDIB::ConvertToImage() const
+{
+    return wxNullImage;
+}
+
+#endif // wxUSE_IMAGE
+
+#endif // wxUSE_WXDIB
+