+ return image;
+}
+
+#endif // wxUSE_WXDIB
+
+#endif // wxUSE_IMAGE
+
+// ----------------------------------------------------------------------------
+// loading and saving bitmaps
+// ----------------------------------------------------------------------------
+
+bool wxBitmap::LoadFile(const wxString& filename, long type)
+{
+ UnRef();
+
+ wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler);
+
+ if ( handler )
+ {
+ m_refData = new wxBitmapRefData;
+
+ return handler->LoadFile(this, filename, type, -1, -1);
+ }
+#if wxUSE_IMAGE
+ else // no bitmap handler found
+ {
+ wxImage image;
+ if ( image.LoadFile( filename, type ) && image.Ok() )
+ {
+ *this = wxBitmap(image);
+
+ return TRUE;
+ }
+ }
+#endif // wxUSE_IMAGE
+
+ return FALSE;
+}
+
+bool wxBitmap::Create(void *data, long type, int width, int height, int depth)
+{
+ UnRef();
+
+ wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler);
+
+ if ( !handler )
+ {
+ wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for type %ld defined."), type);
+
+ return FALSE;
+ }
+
+ m_refData = new wxBitmapRefData;
+
+ return handler->Create(this, data, type, width, height, depth);
+}
+
+bool wxBitmap::SaveFile(const wxString& filename,
+ int type,
+ const wxPalette *palette)
+{
+ wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler);
+
+ if ( handler )
+ {
+ return handler->SaveFile(this, filename, type, palette);
+ }
+#if wxUSE_IMAGE
+ else // no bitmap handler found
+ {
+ // FIXME what about palette? shouldn't we use it?
+ wxImage image = ConvertToImage();
+ if ( image.Ok() )
+ {
+ return image.SaveFile(filename, type);
+ }
+ }
+#endif // wxUSE_IMAGE
+
+ return FALSE;
+}
+
+// ----------------------------------------------------------------------------
+// sub bitmap extraction
+// ----------------------------------------------------------------------------
+
+wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
+{
+ wxCHECK_MSG( Ok() &&
+ (rect.x >= 0) && (rect.y >= 0) &&
+ (rect.x+rect.width <= GetWidth()) &&
+ (rect.y+rect.height <= GetHeight()),
+ wxNullBitmap, wxT("Invalid bitmap or bitmap region") );
+
+ wxBitmap ret( rect.width, rect.height );
+ wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
+
+#ifndef __WXMICROWIN__
+ // TODO: copy alpha channel data if any
+
+ // copy bitmap data
+ MemoryHDC dcSrc,
+ dcDst;
+
+ {
+ SelectInHDC selectSrc(dcSrc, GetHbitmap()),
+ selectDst(dcDst, GetHbitmapOf(ret));
+
+ if ( !selectSrc || !selectDst )
+ {
+ wxLogLastError(_T("SelectObjct(hBitmap)"));
+ }
+
+ if ( !::BitBlt(dcDst, 0, 0, rect.width, rect.height,
+ dcSrc, rect.x, rect.y, SRCCOPY) )
+ {
+ wxLogLastError(_T("BitBlt"));
+ }
+ }
+
+ // copy mask if there is one
+ if ( GetMask() )
+ {
+ HBITMAP hbmpMask = ::CreateBitmap(rect.width, rect.height, 1, 1, 0);
+
+ SelectInHDC selectSrc(dcSrc, (HBITMAP) GetMask()->GetMaskBitmap()),
+ selectDst(dcDst, hbmpMask);
+
+ if ( !::BitBlt(dcDst, 0, 0, rect.width, rect.height,
+ dcSrc, rect.x, rect.y, SRCCOPY) )
+ {
+ wxLogLastError(_T("BitBlt"));
+ }
+
+ wxMask *mask = new wxMask((WXHBITMAP) hbmpMask);
+ ret.SetMask(mask);
+ }
+#endif // !__WXMICROWIN__
+
+ return ret;
+}
+
+// ----------------------------------------------------------------------------
+// wxBitmap accessors
+// ----------------------------------------------------------------------------
+
+#if wxUSE_PALETTE
+wxPalette* wxBitmap::GetPalette() const
+{
+ return GetBitmapData() ? &GetBitmapData()->m_bitmapPalette
+ : (wxPalette *) NULL;
+}
+#endif
+
+wxMask *wxBitmap::GetMask() const
+{
+ return GetBitmapData() ? GetBitmapData()->GetMask() : (wxMask *) NULL;
+}
+
+#ifdef __WXDEBUG__
+
+wxDC *wxBitmap::GetSelectedInto() const
+{
+ return GetBitmapData() ? GetBitmapData()->m_selectedInto : (wxDC *) NULL;
+}
+
+#endif
+
+#if WXWIN_COMPATIBILITY_2_4
+
+int wxBitmap::GetQuality() const
+{
+ return 0;
+}
+
+#endif // WXWIN_COMPATIBILITY_2_4
+
+void wxBitmap::UseAlpha()
+{
+ if ( GetBitmapData() )
+ GetBitmapData()->m_hasAlpha = true;
+}
+
+bool wxBitmap::HasAlpha() const
+{
+ return GetBitmapData() && GetBitmapData()->m_hasAlpha;
+}
+
+// ----------------------------------------------------------------------------
+// wxBitmap setters
+// ----------------------------------------------------------------------------
+
+#ifdef __WXDEBUG__
+
+void wxBitmap::SetSelectedInto(wxDC *dc)
+{
+ if ( GetBitmapData() )
+ GetBitmapData()->m_selectedInto = dc;
+}
+
+#endif
+
+#if wxUSE_PALETTE
+
+void wxBitmap::SetPalette(const wxPalette& palette)
+{
+ AllocExclusive();
+
+ GetBitmapData()->m_bitmapPalette = palette;
+}
+
+#endif // wxUSE_PALETTE
+
+void wxBitmap::SetMask(wxMask *mask)
+{
+ AllocExclusive();
+
+ GetBitmapData()->SetMask(mask);
+}
+
+#if WXWIN_COMPATIBILITY_2_4
+
+void wxBitmap::SetQuality(int WXUNUSED(quality))
+{
+}
+
+#endif // WXWIN_COMPATIBILITY_2_4
+
+// ----------------------------------------------------------------------------
+// raw bitmap access support
+// ----------------------------------------------------------------------------
+
+#ifdef wxHAVE_RAW_BITMAP
+void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
+{
+#if wxUSE_WXDIB
+ if ( !Ok() )
+ {
+ // no bitmap, no data (raw or otherwise)
+ return NULL;
+ }
+
+ // if we're already a DIB we can access our data directly, but if not we
+ // need to convert this DDB to a DIB section and use it for raw access and
+ // then convert it back
+ HBITMAP hDIB;
+ if ( !GetBitmapData()->m_isDIB )
+ {
+ wxCHECK_MSG( !GetBitmapData()->m_dib, FALSE,
+ _T("GetRawData() may be called only once") );
+
+ wxDIB *dib = new wxDIB(*this);
+ if ( !dib->IsOk() )
+ {
+ delete dib;
+
+ return NULL;
+ }
+
+ // we'll free it in UngetRawData()
+ GetBitmapData()->m_dib = dib;
+
+ hDIB = dib->GetHandle();
+ }
+ else // we're a DIB
+ {
+ hDIB = GetHbitmap();
+ }
+
+ DIBSECTION ds;
+ if ( ::GetObject(hDIB, sizeof(ds), &ds) != sizeof(DIBSECTION) )
+ {
+ wxFAIL_MSG( _T("failed to get DIBSECTION from a DIB?") );
+
+ return NULL;
+ }
+
+ // check that the bitmap is in correct format
+ if ( ds.dsBm.bmBitsPixel != bpp )
+ {
+ wxFAIL_MSG( _T("incorrect bitmap type in wxBitmap::GetRawData()") );
+
+ return NULL;
+ }
+
+ // ok, store the relevant info in wxPixelDataBase
+ const LONG h = ds.dsBm.bmHeight;
+
+ data.m_width = ds.dsBm.bmWidth;
+ data.m_height = h;
+
+ // remember that DIBs are stored in top to bottom order!
+ const LONG bytesPerRow = ds.dsBm.bmWidthBytes;
+ data.m_stride = -bytesPerRow;
+
+ char *bits = (char *)ds.dsBm.bmBits;
+ if ( h > 1 )
+ {
+ bits += (h - 1)*bytesPerRow;
+ }
+
+ return bits;
+#else
+ return NULL;
+#endif
+}
+
+void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
+{
+#if wxUSE_WXDIB
+ if ( !Ok() )
+ return;
+
+ // the cast is ugly but we can't do without it and without making this
+ // function template (and hence inline) unfortunately
+ typedef wxPixelData<wxBitmap, wxAlphaPixelFormat> PixelData;
+ PixelData& data = (PixelData &)dataBase;
+
+ if ( !data )
+ {
+ // invalid data, don't crash -- but don't assert neither as we're
+ // called automatically from wxPixelDataBase dtor and so there is no
+ // way to prevent this from happening
+ return;
+ }
+
+ if ( GetBitmapData()->m_hasAlpha )
+ {
+ // AlphaBlend() wants to have premultiplied source alpha but
+ // wxRawBitmap API uses normal, not premultiplied, colours, so adjust
+ // them here now
+ PixelData::Iterator p(data);
+
+ const int w = data.GetWidth();
+ const int h = data.GetHeight();
+
+ for ( int y = 0; y < h; y++ )
+ {
+ PixelData::Iterator rowStart = p;
+
+ for ( int x = 0; x < w; x++ )
+ {
+ const unsigned alpha = p.Alpha();
+
+ p.Red() = (p.Red() * alpha + 127) / 255;
+ p.Blue() = (p.Blue() * alpha + 127) / 255;
+ p.Green() = (p.Green() * alpha + 127) / 255;
+
+ ++p;
+ }
+
+ p = rowStart;
+ p.OffsetY(data, 1);
+ }
+ }
+
+ // if we're a DDB we need to convert DIB back to DDB now to make the
+ // changes made via raw bitmap access effective
+ if ( !GetBitmapData()->m_isDIB )
+ {
+ wxDIB *dib = GetBitmapData()->m_dib;
+ GetBitmapData()->m_dib = NULL;
+
+ // TODO: convert
+
+ delete dib;
+ }
+#endif // wxUSE_WXDIB
+}
+#endif // #ifdef wxHAVE_RAW_BITMAP
+
+// ----------------------------------------------------------------------------
+// wxMask
+// ----------------------------------------------------------------------------
+
+wxMask::wxMask()
+{
+ m_maskBitmap = 0;
projects / wxWidgets.git / blobdiff