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diff --git a/kolourpaint/kpselectiontransparency.h b/kolourpaint/kpselectiontransparency.h
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+
+/*
+   Copyright (c) 2003,2004,2005 Clarence Dang <[email protected]>
+   All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   1. Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+   2. Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+   IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+   THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef __kp_selection_transparency_h__
+#define __kp_selection_transparency_h__
+
+#include <kpcolor.h>
+
+
+// This does not apply to the Text Tool.  Use kpTextStyle for that.
+class kpSelectionTransparency
+{
+public:
+    // Opaque selection
+    kpSelectionTransparency ();
+    // Selection that's transparent at pixels with <color>
+    kpSelectionTransparency (const kpColor &transparentColor, double colorSimilarity);
+    // If <isOpaque>, <transparentColor> is allowed to be anything
+    // (including invalid) as the color would have no effect.
+    // However, you are encouraged to set it as you would if !<isOpaque>,
+    // because setTransparent(true) might be called later, after which
+    // the <transparentColor> would suddenly become important.
+    //
+    // It is a similar case with <colorSimilarity>, although <colorSimilarity>
+    // must be in-range (see kpColorSimilarityDialog).
+    kpSelectionTransparency (bool isOpaque, const kpColor &transparentColor, double colorSimilarity);
+    // Returns whether they are visually equivalent.
+    // This is the same as a memcmp() except that if they are both opaque,
+    // this function will return true regardless of the transparentColor's.
+    bool operator== (const kpSelectionTransparency &rhs) const;
+    bool operator!= (const kpSelectionTransparency &rhs) const;
+    ~kpSelectionTransparency ();
+
+    bool isOpaque () const;
+    bool isTransparent () const;
+    void setOpaque (bool yes = true);
+    void setTransparent (bool yes = true);
+
+    // If isOpaque(), transparentColor() is generally not called because
+    // the transparent color would have no effect.
+    kpColor transparentColor () const;
+    void setTransparentColor (const kpColor &transparentColor);
+
+    double colorSimilarity () const;
+    void setColorSimilarity (double colorSimilarity);
+    int processedColorSimilarity () const;
+
+private:
+    bool m_isOpaque;
+    kpColor m_transparentColor;
+    double m_colorSimilarity;
+    int m_processedColorSimilarity;
+};
+
+
+#endif  // __kp_selection_transparency_h__