kolourpaint/commands/imagelib/effects/kpEffectCommandBase.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 <kpEffectCommandBase.h>
  30
  31 #include <kdialog.h>
  32 #include <klocale.h>
  33
  34 #include <kpDefs.h>
  35 #include <kpDocument.h>
  36 #include <kpSetOverrideCursorSaver.h>
  37
  38
  39 struct kpEffectCommandBasePrivate
  40 {
  41     QString name;
  42     bool actOnSelection;
  43
  44     kpImage oldImage;
  45 };
  46
  47 kpEffectCommandBase::kpEffectCommandBase (const QString &name,
  48         bool actOnSelection,
  49         kpCommandEnvironment *environ)
  50     : kpCommand (environ),
  51       d (new kpEffectCommandBasePrivate ())
  52 {
  53     d->name = name;
  54     d->actOnSelection = actOnSelection;
  55 }
  56
  57 kpEffectCommandBase::~kpEffectCommandBase ()
  58 {
  59     delete d;
  60 }
  61
  62
  63 // public virtual [base kpCommand]
  64 QString kpEffectCommandBase::name () const
  65 {
  66     if (d->actOnSelection)
  67         return i18n ("Selection: %1", d->name);
  68     else
  69         return d->name;
  70 }
  71
  72
  73 // public virtual [base kpCommand]
  74 kpCommandSize::SizeType kpEffectCommandBase::size () const
  75 {
  76     return ImageSize (d->oldImage);
  77 }
  78
  79
  80 // public virtual [base kpCommand]
  81 void kpEffectCommandBase::execute ()
  82 {
  83     kpSetOverrideCursorSaver cursorSaver (Qt::WaitCursor);
  84
  85     kpDocument *doc = document ();
  86     Q_ASSERT (doc);
  87
  88
  89     const kpImage oldImage = doc->image (d->actOnSelection);
  90
  91     if (!isInvertible ())
  92     {
  93         d->oldImage = oldImage;
  94     }
  95
  96
  97     kpImage newImage = /*pure virtual*/applyEffect (oldImage);
  98
  99     doc->setImage (d->actOnSelection, newImage);
 100 }
 101
 102 // public virtual [base kpCommand]
 103 void kpEffectCommandBase::unexecute ()
 104 {
 105     kpSetOverrideCursorSaver cursorSaver (Qt::WaitCursor);
 106
 107     kpDocument *doc = document ();
 108     Q_ASSERT (doc);
 109
 110
 111     kpImage newImage;
 112
 113     if (!isInvertible ())
 114     {
 115         newImage = d->oldImage;
 116     }
 117     else
 118     {
 119         newImage = /*pure virtual*/applyEffect (doc->image (d->actOnSelection));
 120     }
 121
 122     doc->setImage (d->actOnSelection, newImage);
 123
 124
 125     d->oldImage = kpImage ();
 126 }
 127