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82 lines
3.3 KiB
C++
82 lines
3.3 KiB
C++
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/*
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Copyright (c) 2003-2007 Clarence Dang <dang@kde.org>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef KP_SELECTION_TRANSPARENCY_H
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#define KP_SELECTION_TRANSPARENCY_H
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#include <kpColor.h>
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// This does not apply to the Text Tool. Use kpTextStyle for that.
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class kpImageSelectionTransparency
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{
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public:
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// Opaque selection
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kpImageSelectionTransparency ();
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// Selection that's transparent at pixels with <color>
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kpImageSelectionTransparency (const kpColor &transparentColor, double colorSimilarity);
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// If <isOpaque>, <transparentColor> is allowed to be anything
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// (including invalid) as the color would have no effect.
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// However, you are encouraged to set it as you would if !<isOpaque>,
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// because setTransparent(true) might be called later, after which
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// the <transparentColor> would suddenly become important.
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//
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// It is a similar case with <colorSimilarity>, although <colorSimilarity>
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// must be in-range (see kpColorSimilarityHolder).
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kpImageSelectionTransparency (bool isOpaque, const kpColor &transparentColor, double colorSimilarity);
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// Returns whether they are visually equivalent.
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// This is the same as a memcmp() except that if they are both opaque,
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// this function will return true regardless of the transparentColor's.
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bool operator== (const kpImageSelectionTransparency &rhs) const;
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bool operator!= (const kpImageSelectionTransparency &rhs) const;
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~kpImageSelectionTransparency ();
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bool isOpaque () const;
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bool isTransparent () const;
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void setOpaque (bool yes = true);
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void setTransparent (bool yes = true);
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// If isOpaque(), transparentColor() is generally not called because
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// the transparent color would have no effect.
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kpColor transparentColor () const;
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void setTransparentColor (const kpColor &transparentColor);
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double colorSimilarity () const;
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void setColorSimilarity (double colorSimilarity);
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int processedColorSimilarity () const;
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private:
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bool m_isOpaque;
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kpColor m_transparentColor;
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double m_colorSimilarity;
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int m_processedColorSimilarity;
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};
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#endif // KP_SELECTION_TRANSPARENCY_H
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