+const wxPalette& wxImage::GetPalette() const
+{
+ wxCHECK_MSG( Ok(), wxNullPalette, wxT("invalid image") );
+
+ return M_IMGDATA->m_palette;
+}
+
+void wxImage::SetPalette(const wxPalette& palette)
+{
+ wxCHECK_RET( Ok(), wxT("invalid image") );
+
+ M_IMGDATA->m_palette = palette;
+}
+
+#endif // wxUSE_PALETTE
+
+// Option functions (arbitrary name/value mapping)
+void wxImage::SetOption(const wxString& name, const wxString& value)
+{
+ wxCHECK_RET( Ok(), wxT("invalid image") );
+
+ int idx = M_IMGDATA->m_optionNames.Index(name, FALSE);
+ if (idx == wxNOT_FOUND)
+ {
+ M_IMGDATA->m_optionNames.Add(name);
+ M_IMGDATA->m_optionValues.Add(value);
+ }
+ else
+ {
+ M_IMGDATA->m_optionNames[idx] = name;
+ M_IMGDATA->m_optionValues[idx] = value;
+ }
+}
+
+void wxImage::SetOption(const wxString& name, int value)
+{
+ wxString valStr;
+ valStr.Printf(wxT("%d"), value);
+ SetOption(name, valStr);
+}
+
+wxString wxImage::GetOption(const wxString& name) const
+{
+ wxCHECK_MSG( Ok(), wxEmptyString, wxT("invalid image") );
+
+ int idx = M_IMGDATA->m_optionNames.Index(name, FALSE);
+ if (idx == wxNOT_FOUND)
+ return wxEmptyString;
+ else
+ return M_IMGDATA->m_optionValues[idx];
+}
+
+int wxImage::GetOptionInt(const wxString& name) const
+{
+ wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+ return wxAtoi(GetOption(name));
+}
+
+bool wxImage::HasOption(const wxString& name) const
+{
+ wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
+
+ return (M_IMGDATA->m_optionNames.Index(name, FALSE) != wxNOT_FOUND);
+}
+
+bool wxImage::LoadFile( const wxString& filename, long type, int index )
+{
+#if wxUSE_STREAMS
+ if (wxFileExists(filename))
+ {
+ wxFileInputStream stream(filename);
+ wxBufferedInputStream bstream( stream );
+ return LoadFile(bstream, type, index);
+ }
+ else
+ {
+ wxLogError( _("Can't load image from file '%s': file does not exist."), filename.c_str() );
+
+ return FALSE;
+ }
+#else // !wxUSE_STREAMS
+ return FALSE;
+#endif // wxUSE_STREAMS
+}
+
+bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype, int index )
+{
+#if wxUSE_STREAMS
+ if (wxFileExists(filename))
+ {
+ wxFileInputStream stream(filename);
+ wxBufferedInputStream bstream( stream );
+ return LoadFile(bstream, mimetype, index);
+ }
+ else
+ {
+ wxLogError( _("Can't load image from file '%s': file does not exist."), filename.c_str() );
+
+ return FALSE;
+ }
+#else // !wxUSE_STREAMS
+ return FALSE;
+#endif // wxUSE_STREAMS
+}
+
+
+
+bool wxImage::SaveFile( const wxString& filename ) const
+{
+ wxString ext = filename.AfterLast('.').Lower();
+
+ wxImageHandler * pHandler = FindHandler(ext, -1);
+ if (pHandler)
+ {
+ SaveFile(filename, pHandler->GetType());
+ return TRUE;
+ }
+
+ wxLogError(_("Can't save image to file '%s': unknown extension."), filename.c_str());
+
+ return FALSE;
+}
+
+bool wxImage::SaveFile( const wxString& filename, int type ) const
+{
+#if wxUSE_STREAMS
+ ((wxImage*)this)->SetOption(wxIMAGE_OPTION_FILENAME, filename);
+
+ wxFileOutputStream stream(filename);
+
+ if ( stream.IsOk() )
+ {
+ wxBufferedOutputStream bstream( stream );
+ return SaveFile(bstream, type);
+ }
+#endif // wxUSE_STREAMS
+
+ return FALSE;
+}
+
+bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype ) const
+{
+#if wxUSE_STREAMS
+ ((wxImage*)this)->SetOption(wxIMAGE_OPTION_FILENAME, filename);
+
+ wxFileOutputStream stream(filename);
+
+ if ( stream.IsOk() )
+ {
+ wxBufferedOutputStream bstream( stream );
+ return SaveFile(bstream, mimetype);
+ }
+#endif // wxUSE_STREAMS
+
+ return FALSE;
+}
+
+bool wxImage::CanRead( const wxString &name )
+{
+#if wxUSE_STREAMS
+ wxFileInputStream stream(name);
+ return CanRead(stream);
+#else
+ return FALSE;
+#endif
+}
+
+int wxImage::GetImageCount( const wxString &name, long type )
+{
+#if wxUSE_STREAMS
+ wxFileInputStream stream(name);
+ if (stream.Ok())
+ return GetImageCount(stream, type);
+#endif
+
+ return 0;
+}
+
+#if wxUSE_STREAMS
+
+bool wxImage::CanRead( wxInputStream &stream )
+{
+ const wxList& list = GetHandlers();
+
+ for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
+ {
+ wxImageHandler *handler=(wxImageHandler*)node->GetData();
+ if (handler->CanRead( stream ))
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+int wxImage::GetImageCount( wxInputStream &stream, long type )
+{
+ wxImageHandler *handler;
+
+ if ( type == wxBITMAP_TYPE_ANY )
+ {
+ wxList &list=GetHandlers();
+
+ for (wxList::Node *node = list.GetFirst(); node; node = node->GetNext())
+ {
+ handler=(wxImageHandler*)node->GetData();
+ if ( handler->CanRead(stream) )
+ return handler->GetImageCount(stream);
+
+ }
+
+ wxLogWarning(_("No handler found for image type."));
+ return 0;
+ }
+
+ handler = FindHandler(type);
+
+ if ( !handler )
+ {
+ wxLogWarning(_("No image handler for type %d defined."), type);
+ return FALSE;
+ }
+
+ if ( handler->CanRead(stream) )
+ {
+ return handler->GetImageCount(stream);
+ }
+ else
+ {
+ wxLogError(_("Image file is not of type %d."), type);
+ return 0;
+ }
+}
+
+bool wxImage::LoadFile( wxInputStream& stream, long type, int index )
+{
+ UnRef();
+
+ m_refData = new wxImageRefData;
+
+ wxImageHandler *handler;
+
+ if ( type == wxBITMAP_TYPE_ANY )
+ {
+ wxList &list=GetHandlers();
+
+ for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
+ {
+ handler=(wxImageHandler*)node->GetData();
+ if ( handler->CanRead(stream) )
+ return handler->LoadFile(this, stream, TRUE/*verbose*/, index);
+
+ }
+
+ wxLogWarning( _("No handler found for image type.") );
+ return FALSE;
+ }
+
+ handler = FindHandler(type);
+
+ if (handler == 0)
+ {
+ wxLogWarning( _("No image handler for type %d defined."), type );
+
+ return FALSE;
+ }
+
+ return handler->LoadFile(this, stream, TRUE/*verbose*/, index);
+}
+
+bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype, int index )
+{
+ UnRef();
+
+ m_refData = new wxImageRefData;
+
+ wxImageHandler *handler = FindHandlerMime(mimetype);
+
+ if (handler == 0)
+ {
+ wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() );
+
+ return FALSE;
+ }
+
+ return handler->LoadFile( this, stream, TRUE/*verbose*/, index );
+}
+
+bool wxImage::SaveFile( wxOutputStream& stream, int type ) const
+{
+ wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
+
+ wxImageHandler *handler = FindHandler(type);
+
+ if (handler == 0)
+ {
+ wxLogWarning( _("No image handler for type %d defined."), type );
+
+ return FALSE;
+ }
+
+ return handler->SaveFile( (wxImage*)this, stream );
+}
+
+bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype ) const
+{
+ wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
+
+ wxImageHandler *handler = FindHandlerMime(mimetype);
+
+ if (handler == 0)
+ {
+ wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() );
+
+ return FALSE;
+ }
+
+ return handler->SaveFile( (wxImage*)this, stream );
+}
+#endif // wxUSE_STREAMS
+
+void wxImage::AddHandler( wxImageHandler *handler )
+{
+ // make sure that the memory will be freed at the program end
+ sm_handlers.DeleteContents(TRUE);
+
+ // Check for an existing handler of the type being added.
+ if (FindHandler( handler->GetType() ) == 0)
+ {
+ sm_handlers.Append( handler );
+ }
+ else
+ {
+ // This is not documented behaviour, merely the simplest 'fix'
+ // for preventing duplicate additions. If someone ever has
+ // a good reason to add and remove duplicate handlers (and they
+ // may) we should probably refcount the duplicates.
+ // also an issue in InsertHandler below.
+
+ wxLogDebug( _T("Adding duplicate image handler for '%s'"),
+ handler->GetName().c_str() );
+ delete handler;
+ }
+}
+
+void wxImage::InsertHandler( wxImageHandler *handler )
+{
+ // make sure that the memory will be freed at the program end
+ sm_handlers.DeleteContents(TRUE);
+
+ // Check for an existing handler of the type being added.
+ if (FindHandler( handler->GetType() ) == 0)
+ {
+ sm_handlers.Insert( handler );
+ }
+ else
+ {
+ // see AddHandler for additional comments.
+ wxLogDebug( _T("Inserting duplicate image handler for '%s'"),
+ handler->GetName().c_str() );
+ delete handler;
+ }
+}
+
+bool wxImage::RemoveHandler( const wxString& name )
+{
+ wxImageHandler *handler = FindHandler(name);
+ if (handler)
+ {
+ sm_handlers.DeleteObject(handler);
+ return TRUE;
+ }
+ else
+ return FALSE;
+}
+
+wxImageHandler *wxImage::FindHandler( const wxString& name )
+{
+ wxNode *node = sm_handlers.First();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler*)node->Data();
+ if (handler->GetName().Cmp(name) == 0) return handler;
+
+ node = node->Next();
+ }
+ return 0;
+}
+
+wxImageHandler *wxImage::FindHandler( const wxString& extension, long bitmapType )
+{
+ wxNode *node = sm_handlers.First();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler*)node->Data();
+ if ( (handler->GetExtension().Cmp(extension) == 0) &&
+ (bitmapType == -1 || handler->GetType() == bitmapType) )
+ return handler;
+ node = node->Next();
+ }
+ return 0;
+}
+
+wxImageHandler *wxImage::FindHandler( long bitmapType )
+{
+ wxNode *node = sm_handlers.First();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler *)node->Data();
+ if (handler->GetType() == bitmapType) return handler;
+ node = node->Next();
+ }
+ return 0;
+}
+
+wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype )
+{
+ wxNode *node = sm_handlers.First();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler *)node->Data();
+ if (handler->GetMimeType().IsSameAs(mimetype, FALSE)) return handler;
+ node = node->Next();
+ }
+ return 0;
+}
+
+void wxImage::InitStandardHandlers()
+{
+#if wxUSE_STREAMS
+ AddHandler(new wxBMPHandler);
+#endif // wxUSE_STREAMS
+}
+
+void wxImage::CleanUpHandlers()
+{
+ wxNode *node = sm_handlers.First();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler *)node->Data();
+ wxNode *next = node->Next();
+ delete handler;
+ delete node;
+ node = next;
+ }
+}
+
+//-----------------------------------------------------------------------------
+// wxImageHandler
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS(wxImageHandler,wxObject)
+
+#if wxUSE_STREAMS
+bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream), bool WXUNUSED(verbose), int WXUNUSED(index) )
+{
+ return FALSE;
+}
+
+bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), bool WXUNUSED(verbose) )
+{
+ return FALSE;
+}
+
+int wxImageHandler::GetImageCount( wxInputStream& WXUNUSED(stream) )
+{
+ return 1;
+}
+
+bool wxImageHandler::CanRead( const wxString& name )
+{
+ if (wxFileExists(name))
+ {
+ wxFileInputStream stream(name);
+ return CanRead(stream);
+ }
+
+ wxLogError( _("Can't check image format of file '%s': file does not exist."), name.c_str() );
+
+ return FALSE;
+}
+
+bool wxImageHandler::CallDoCanRead(wxInputStream& stream)
+{
+ off_t posOld = stream.TellI();
+ if ( posOld == wxInvalidOffset )
+ {
+ // can't test unseekable stream
+ return FALSE;
+ }
+
+ bool ok = DoCanRead(stream);
+
+ // restore the old position to be able to test other formats and so on
+ if ( stream.SeekI(posOld) == wxInvalidOffset )
+ {
+ wxLogDebug(_T("Failed to rewind the stream in wxImageHandler!"));
+
+ // reading would fail anyhow as we're not at the right position
+ return FALSE;
+ }
+
+ return ok;
+}
+
+#endif // wxUSE_STREAMS
+
+
+
+//-----------------------------------------------------------------------------
+// Deprecated wxBitmap conversion routines
+//-----------------------------------------------------------------------------
+
+#if WXWIN_COMPATIBILITY_2_2 && wxUSE_GUI
+
+#ifdef __WXGTK__
+wxBitmap wxImage::ConvertToMonoBitmap( unsigned char red, unsigned char green, unsigned char blue ) const
+{
+ wxImage mono = this->ConvertToMono( red, green, blue );
+ wxBitmap bitmap( mono, 1 );
+ return bitmap;
+}
+#endif
+
+wxBitmap wxImage::ConvertToBitmap() const
+{
+ wxBitmap bitmap( *this );
+ return bitmap;
+}
+
+wxImage::wxImage( const wxBitmap &bitmap )
+{
+ *this = bitmap.ConvertToImage();
+}
+
+#endif // WXWIN_COMPATIBILITY_2_2 && wxUSE_GUI
+
+
+//-----------------------------------------------------------------------------
+
+// GRG, Dic/99
+// Counts and returns the number of different colours. Optionally stops
+// when it exceeds 'stopafter' different colours. This is useful, for
+// example, to see if the image can be saved as 8-bit (256 colour or
+// less, in this case it would be invoked as CountColours(256)). Default
+// value for stopafter is -1 (don't care).
+//
+unsigned long wxImage::CountColours( unsigned long stopafter ) const
+{
+ wxHashTable h;
+ wxObject dummy;
+ unsigned char r, g, b;
+ unsigned char *p;
+ unsigned long size, nentries, key;
+
+ p = GetData();
+ size = GetWidth() * GetHeight();
+ nentries = 0;
+
+ for (unsigned long j = 0; (j < size) && (nentries <= stopafter) ; j++)
+ {
+ r = *(p++);
+ g = *(p++);
+ b = *(p++);
+ key = (r << 16) | (g << 8) | b;
+
+ if (h.Get(key) == NULL)
+ {
+ h.Put(key, &dummy);
+ nentries++;
+ }
+ }
+
+ return nentries;
+}
+
+
+unsigned long wxImage::ComputeHistogram( wxImageHistogram &h ) const
+{
+ unsigned char r, g, b;
+ unsigned char *p;
+ unsigned long size, nentries, key;
+
+ h.clear();
+
+ p = GetData();
+ size = GetWidth() * GetHeight();
+ nentries = 0;
+
+ for (unsigned long j = 0; j < size; j++)
+ {
+ r = *(p++);
+ g = *(p++);
+ b = *(p++);
+ key = (r << 16) | (g << 8) | b;
+
+ wxImageHistogramEntry& entry = h[key];
+ if ( entry.value++ == 0 )
+ entry.index = nentries++;
+ }
+
+ return nentries;
+}
+
+/*
+ * Rotation code by Carlos Moreno
+ */
+
+// GRG: I've removed wxRotationPoint - we already have wxRealPoint which
+// does exactly the same thing. And I also got rid of wxRotationPixel
+// bacause of potential problems in architectures where alignment
+// is an issue, so I had to rewrite parts of the code.
+
+static const double gs_Epsilon = 1e-10;
+
+static inline int wxCint (double x)
+{
+ return (x > 0) ? (int) (x + 0.5) : (int) (x - 0.5);
+}
+
+
+// Auxiliary function to rotate a point (x,y) with respect to point p0
+// make it inline and use a straight return to facilitate optimization
+// also, the function receives the sine and cosine of the angle to avoid
+// repeating the time-consuming calls to these functions -- sin/cos can
+// be computed and stored in the calling function.
+
+inline wxRealPoint rotated_point (const wxRealPoint & p, double cos_angle, double sin_angle, const wxRealPoint & p0)
+{
+ return wxRealPoint (p0.x + (p.x - p0.x) * cos_angle - (p.y - p0.y) * sin_angle,
+ p0.y + (p.y - p0.y) * cos_angle + (p.x - p0.x) * sin_angle);
+}
+
+inline wxRealPoint rotated_point (double x, double y, double cos_angle, double sin_angle, const wxRealPoint & p0)
+{
+ return rotated_point (wxRealPoint(x,y), cos_angle, sin_angle, p0);
+}
+
+wxImage wxImage::Rotate(double angle, const wxPoint & centre_of_rotation, bool interpolating, wxPoint * offset_after_rotation) const
+{
+ int i;
+ angle = -angle; // screen coordinates are a mirror image of "real" coordinates
+
+ // Create pointer-based array to accelerate access to wxImage's data
+ unsigned char ** data = new unsigned char * [GetHeight()];
+
+ data[0] = GetData();
+
+ for (i = 1; i < GetHeight(); i++)
+ data[i] = data[i - 1] + (3 * GetWidth());
+
+ // precompute coefficients for rotation formula
+ // (sine and cosine of the angle)
+ const double cos_angle = cos(angle);
+ const double sin_angle = sin(angle);
+
+ // Create new Image to store the result
+ // First, find rectangle that covers the rotated image; to do that,
+ // rotate the four corners
+
+ const wxRealPoint p0(centre_of_rotation.x, centre_of_rotation.y);
+
+ wxRealPoint p1 = rotated_point (0, 0, cos_angle, sin_angle, p0);
+ wxRealPoint p2 = rotated_point (0, GetHeight(), cos_angle, sin_angle, p0);
+ wxRealPoint p3 = rotated_point (GetWidth(), 0, cos_angle, sin_angle, p0);
+ wxRealPoint p4 = rotated_point (GetWidth(), GetHeight(), cos_angle, sin_angle, p0);
+
+ int x1 = (int) floor (wxMin (wxMin(p1.x, p2.x), wxMin(p3.x, p4.x)));
+ int y1 = (int) floor (wxMin (wxMin(p1.y, p2.y), wxMin(p3.y, p4.y)));
+ int x2 = (int) ceil (wxMax (wxMax(p1.x, p2.x), wxMax(p3.x, p4.x)));
+ int y2 = (int) ceil (wxMax (wxMax(p1.y, p2.y), wxMax(p3.y, p4.y)));
+
+ wxImage rotated (x2 - x1 + 1, y2 - y1 + 1);
+
+ if (offset_after_rotation != NULL)
+ {
+ *offset_after_rotation = wxPoint (x1, y1);
+ }
+
+ // GRG: The rotated (destination) image is always accessed
+ // sequentially, so there is no need for a pointer-based
+ // array here (and in fact it would be slower).
+ //
+ unsigned char * dst = rotated.GetData();
+
+ // GRG: if the original image has a mask, use its RGB values
+ // as the blank pixel, else, fall back to default (black).
+ //
+ unsigned char blank_r = 0;
+ unsigned char blank_g = 0;
+ unsigned char blank_b = 0;
+
+ if (HasMask())
+ {
+ blank_r = GetMaskRed();
+ blank_g = GetMaskGreen();
+ blank_b = GetMaskBlue();
+ rotated.SetMaskColour( blank_r, blank_g, blank_b );
+ }
+
+ // Now, for each point of the rotated image, find where it came from, by
+ // performing an inverse rotation (a rotation of -angle) and getting the
+ // pixel at those coordinates
+
+ // GRG: I've taken the (interpolating) test out of the loops, so that
+ // it is done only once, instead of repeating it for each pixel.
+
+ int x;
+ if (interpolating)
+ {
+ for (int y = 0; y < rotated.GetHeight(); y++)
+ {
+ for (x = 0; x < rotated.GetWidth(); x++)
+ {
+ wxRealPoint src = rotated_point (x + x1, y + y1, cos_angle, -sin_angle, p0);
+
+ if (-0.25 < src.x && src.x < GetWidth() - 0.75 &&
+ -0.25 < src.y && src.y < GetHeight() - 0.75)
+ {
+ // interpolate using the 4 enclosing grid-points. Those
+ // points can be obtained using floor and ceiling of the
+ // exact coordinates of the point
+ // C.M. 2000-02-17: when the point is near the border, special care is required.
+
+ int x1, y1, x2, y2;
+
+ if (0 < src.x && src.x < GetWidth() - 1)
+ {
+ x1 = wxCint(floor(src.x));
+ x2 = wxCint(ceil(src.x));
+ }
+ else // else means that x is near one of the borders (0 or width-1)
+ {
+ x1 = x2 = wxCint (src.x);
+ }
+
+ if (0 < src.y && src.y < GetHeight() - 1)
+ {
+ y1 = wxCint(floor(src.y));
+ y2 = wxCint(ceil(src.y));
+ }
+ else
+ {
+ y1 = y2 = wxCint (src.y);
+ }
+
+ // get four points and the distances (square of the distance,
+ // for efficiency reasons) for the interpolation formula
+
+ // GRG: Do not calculate the points until they are
+ // really needed -- this way we can calculate
+ // just one, instead of four, if d1, d2, d3
+ // or d4 are < gs_Epsilon
+
+ const double d1 = (src.x - x1) * (src.x - x1) + (src.y - y1) * (src.y - y1);
+ const double d2 = (src.x - x2) * (src.x - x2) + (src.y - y1) * (src.y - y1);
+ const double d3 = (src.x - x2) * (src.x - x2) + (src.y - y2) * (src.y - y2);
+ const double d4 = (src.x - x1) * (src.x - x1) + (src.y - y2) * (src.y - y2);
+
+ // Now interpolate as a weighted average of the four surrounding
+ // points, where the weights are the distances to each of those points
+
+ // If the point is exactly at one point of the grid of the source
+ // image, then don't interpolate -- just assign the pixel
+
+ if (d1 < gs_Epsilon) // d1,d2,d3,d4 are positive -- no need for abs()
+ {
+ unsigned char *p = data[y1] + (3 * x1);
+ *(dst++) = *(p++);
+ *(dst++) = *(p++);
+ *(dst++) = *(p++);
+ }
+ else if (d2 < gs_Epsilon)
+ {
+ unsigned char *p = data[y1] + (3 * x2);
+ *(dst++) = *(p++);
+ *(dst++) = *(p++);
+ *(dst++) = *(p++);
+ }
+ else if (d3 < gs_Epsilon)
+ {
+ unsigned char *p = data[y2] + (3 * x2);
+ *(dst++) = *(p++);
+ *(dst++) = *(p++);
+ *(dst++) = *(p++);
+ }
+ else if (d4 < gs_Epsilon)
+ {
+ unsigned char *p = data[y2] + (3 * x1);
+ *(dst++) = *(p++);
+ *(dst++) = *(p++);
+ *(dst++) = *(p++);
+ }
+ else
+ {
+ // weights for the weighted average are proportional to the inverse of the distance
+ unsigned char *v1 = data[y1] + (3 * x1);
+ unsigned char *v2 = data[y1] + (3 * x2);
+ unsigned char *v3 = data[y2] + (3 * x2);
+ unsigned char *v4 = data[y2] + (3 * x1);
+
+ const double w1 = 1/d1, w2 = 1/d2, w3 = 1/d3, w4 = 1/d4;
+
+ // GRG: Unrolled.
+
+ *(dst++) = (unsigned char)
+ ( (w1 * *(v1++) + w2 * *(v2++) +
+ w3 * *(v3++) + w4 * *(v4++)) /
+ (w1 + w2 + w3 + w4) );
+ *(dst++) = (unsigned char)
+ ( (w1 * *(v1++) + w2 * *(v2++) +
+ w3 * *(v3++) + w4 * *(v4++)) /
+ (w1 + w2 + w3 + w4) );
+ *(dst++) = (unsigned char)
+ ( (w1 * *(v1++) + w2 * *(v2++) +
+ w3 * *(v3++) + w4 * *(v4++)) /
+ (w1 + w2 + w3 + w4) );
+ }
+ }
+ else
+ {
+ *(dst++) = blank_r;
+ *(dst++) = blank_g;
+ *(dst++) = blank_b;
+ }
+ }
+ }
+ }
+ else // not interpolating
+ {
+ for (int y = 0; y < rotated.GetHeight(); y++)
+ {
+ for (x = 0; x < rotated.GetWidth(); x++)
+ {
+ wxRealPoint src = rotated_point (x + x1, y + y1, cos_angle, -sin_angle, p0);
+
+ const int xs = wxCint (src.x); // wxCint rounds to the
+ const int ys = wxCint (src.y); // closest integer
+
+ if (0 <= xs && xs < GetWidth() &&
+ 0 <= ys && ys < GetHeight())
+ {
+ unsigned char *p = data[ys] + (3 * xs);
+ *(dst++) = *(p++);
+ *(dst++) = *(p++);
+ *(dst++) = *(p++);
+ }
+ else
+ {
+ *(dst++) = blank_r;
+ *(dst++) = blank_g;
+ *(dst++) = blank_b;
+ }
+ }
+ }
+ }
+
+ delete [] data;
+
+ return rotated;
+}
+
+
+
+
+
+// A module to allow wxImage initialization/cleanup
+// without calling these functions from app.cpp or from
+// the user's application.
+
+class wxImageModule: public wxModule
+{
+DECLARE_DYNAMIC_CLASS(wxImageModule)
+public:
+ wxImageModule() {}
+ bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; };
+ void OnExit() { wxImage::CleanUpHandlers(); };
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)
+
+
+#endif // wxUSE_IMAGE
projects / wxWidgets.git / blobdiff