Added wxQuantize, wxSplashScreen, wxEffects & added palette to wxImage

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@7892 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/quantize.h

@@ -0,0 +1,71 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        quantize.h
+// Purpose:     wxQuantizer class
+// Author:      Julian Smart
+// Modified by:
+// Created:     22/6/2000
+// RCS-ID:      $Id$
+// Copyright:   (c) Julian Smart
+// Licence:
+/////////////////////////////////////////////////////////////////////////////
+
+/*
+ * From jquant2.c
+ *
+ * Copyright (C) 1991-1996, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ */
+
+#ifdef __GNUG__
+#pragma interface "quantize.h"
+#endif
+
+#ifndef _WX_QUANTIZE_H_
+#define _WX_QUANTIZE_H_
+
+class WXDLLEXPORT wxImage;
+
+/*
+ * wxQuantize
+ * Based on the JPEG quantization code. Reduces the number of colours in a wxImage.
+ */
+
+#define wxQUANTIZE_INCLUDE_WINDOWS_COLOURS      0x01
+#define wxQUANTIZE_RETURN_8BIT_DATA             0x02
+#define wxQUANTIZE_FILL_DESTINATION_IMAGE       0x04
+
+class WXDLLEXPORT wxQuantize: public wxObject
+{
+public:
+DECLARE_DYNAMIC_CLASS(wxQuantize)
+
+//// Constructor
+
+    wxQuantize() {};
+
+//// Operations
+
+    // Reduce the colours in the source image and put the result into the
+    // destination image. Both images may be the same, to overwrite the source image.
+    // Specify an optional palette pointer to receive the resulting palette.
+    // This palette may be passed to ConvertImageToBitmap, for example.
+    // If you pass a palette pointer, you must free the palette yourself.
+
+    static bool Quantize(const wxImage& src, wxImage& dest, wxPalette** pPalette = NULL, int desiredNoColours = 236,
+        unsigned char** eightBitData = 0, int flags = wxQUANTIZE_INCLUDE_WINDOWS_COLOURS|wxQUANTIZE_FILL_DESTINATION_IMAGE|wxQUANTIZE_RETURN_8BIT_DATA);
+
+//// Helpers
+
+    // Converts input bitmap(s) into 8bit representation with custom palette
+    
+    // in_rows and out_rows are arrays [0..h-1] of pointer to rows
+    // (in_rows contains w * 3 bytes per row, out_rows w bytes per row)
+    // fills out_rows with indexes into palette (which is also stored into palette variable)
+    static void DoQuantize(unsigned w, unsigned h, unsigned char **in_rows, unsigned char **out_rows, unsigned char *palette, int desiredNoColours);
+
+};
+
+#endif
+    // _WX_QUANTIZE_H_
+