File indexing completed on 2024-12-22 04:07:22

0001 
0002 /*
0003    Copyright (c) 2003-2007 Clarence Dang <dang@kde.org>
0004    All rights reserved.
0005 
0006    Redistribution and use in source and binary forms, with or without
0007    modification, are permitted provided that the following conditions
0008    are met:
0009 
0010    1. Redistributions of source code must retain the above copyright
0011       notice, this list of conditions and the following disclaimer.
0012    2. Redistributions in binary form must reproduce the above copyright
0013       notice, this list of conditions and the following disclaimer in the
0014       documentation and/or other materials provided with the distribution.
0015 
0016    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
0017    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
0018    OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
0019    IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
0020    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
0021    NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
0022    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
0023    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
0024    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
0025    THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0026 */
0027 
0028 
0029 #ifndef kpEffectCommandBase_H
0030 #define kpEffectCommandBase_H
0031 
0032 
0033 
0034 #include "commands/kpCommand.h"
0035 #include "imagelib/kpImage.h"
0036 
0037 
0038 class kpEffectCommandBase : public kpCommand
0039 {
0040 public:
0041     kpEffectCommandBase (const QString &name,
0042         bool actOnSelection,
0043         kpCommandEnvironment *environ);
0044     ~kpEffectCommandBase () override;
0045 
0046     QString name () const override;
0047     SizeType size () const override;
0048 
0049 public:
0050     void execute () override;
0051     void unexecute () override;
0052 
0053 public:
0054     // Return true if applyEffect(applyEffect(image)) == image
0055     // to avoid storing the old image, saving memory.
0056     virtual bool isInvertible () const { return false; }
0057 
0058 protected:
0059     virtual kpImage applyEffect (const kpImage &image) = 0;
0060 
0061 private:
0062     struct kpEffectCommandBasePrivate *d;
0063 };
0064 
0065 
0066 #endif  // kpEffectCommandBase_H