kolourpaint/commands/imagelib/effects/kpEffectClearCommand.cpp

   1
   2 /*
   3    Copyright (c) 2003-2007 Clarence Dang <dang@kde.org>
   4    All rights reserved.
   5
   6    Redistribution and use in source and binary forms, with or without
   7    modification, are permitted provided that the following conditions
   8    are met:
   9
  10    1. Redistributions of source code must retain the above copyright
  11       notice, this list of conditions and the following disclaimer.
  12    2. Redistributions in binary form must reproduce the above copyright
  13       notice, this list of conditions and the following disclaimer in the
  14       documentation and/or other materials provided with the distribution.
  15
  16    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18    OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19    IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21    NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25    THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26 */
  27
  28
  29 #include <kpEffectClearCommand.h>
  30
  31 #include <kdebug.h>
  32 #include <klocale.h>
  33
  34 #include <kpAbstractImageSelection.h>
  35 #include <kpDefs.h>
  36 #include <kpDocument.h>
  37 #include <kpPixmapFX.h>
  38
  39
  40 kpEffectClearCommand::kpEffectClearCommand (bool actOnSelection,
  41         const kpColor &newColor,
  42         kpCommandEnvironment *environ)
  43     : kpCommand (environ),
  44       m_actOnSelection (actOnSelection),
  45       m_newColor (newColor),
  46       m_oldImagePtr (0)
  47 {
  48 }
  49
  50 kpEffectClearCommand::~kpEffectClearCommand ()
  51 {
  52     delete m_oldImagePtr;
  53 }
  54
  55
  56 // public virtual [base kpCommand]
  57 QString kpEffectClearCommand::name () const
  58 {
  59     QString opName = i18n ("Clear");
  60
  61     if (m_actOnSelection)
  62         return i18n ("Selection: %1", opName);
  63     else
  64         return opName;
  65 }
  66
  67
  68 // public virtual [base kpCommand]
  69 kpCommandSize::SizeType kpEffectClearCommand::size () const
  70 {
  71     return ImageSize (m_oldImagePtr);
  72 }
  73
  74
  75 // public virtual [base kpCommand]
  76 void kpEffectClearCommand::execute ()
  77 {
  78     kpDocument *doc = document ();
  79     Q_ASSERT (doc);
  80
  81
  82     m_oldImagePtr = new kpImage ();
  83     *m_oldImagePtr = doc->image (m_actOnSelection);
  84
  85
  86     // REFACTOR: Would like to derive entire class from kpEffectCommandBase but
  87     //           this code makes it difficult since it's not just acting on pixels
  88     //           (kpAbstractImageSelection::fill() takes into account the shape of a selection).
  89     if (m_actOnSelection)
  90     {
  91         // OPT: could just edit pixmap directly and signal change
  92         kpAbstractImageSelection *sel = doc->imageSelection ();
  93         Q_ASSERT (sel);
  94         sel->fill (m_newColor);
  95     }
  96     else
  97         doc->fill (m_newColor);
  98 }
  99
 100 // public virtual [base kpCommand]
 101 void kpEffectClearCommand::unexecute ()
 102 {
 103     kpDocument *doc = document ();
 104     Q_ASSERT (doc);
 105
 106
 107     doc->setImage (m_actOnSelection, *m_oldImagePtr);
 108
 109
 110     delete m_oldImagePtr;
 111     m_oldImagePtr = 0;
 112 }
 113