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diff --git a/digikam/imageplugins/distortionfx/distortionfxtool.cpp b/digikam/imageplugins/distortionfx/distortionfxtool.cpp
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+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date        : 2005-02-11
+ * Description : a plugin to apply Distortion FX to an image.
+ *
+ * Copyright (C) 2005-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
+ * Copyright (C) 2006-2008 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
+ *
+ * Original Distortion algorithms copyrighted 2004-2005 by
+ * Pieter Z. Voloshyn <pieter dot voloshyn at gmail dot com>.
+ *
+ * This program is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU General
+ * Public License as published by the Free Software Foundation;
+ * either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * ============================================================ */
+
+// Qt includes.
+
+#include <qframe.h>
+#include <qimage.h>
+#include <qlabel.h>
+#include <qlayout.h>
+#include <qspinbox.h>
+#include <qwhatsthis.h>
+
+// KDE includes.
+
+#include <kaboutdata.h>
+#include <kapplication.h>
+#include <kconfig.h>
+#include <kcursor.h>
+#include <khelpmenu.h>
+#include <kiconloader.h>
+#include <klocale.h>
+#include <kprogress.h>
+#include <kstandarddirs.h>
+
+// LibKDcraw includes.
+
+#include <libkdcraw/rnuminput.h>
+#include <libkdcraw/rcombobox.h>
+
+// Local includes.
+
+#include "daboutdata.h"
+#include "ddebug.h"
+#include "dimg.h"
+#include "editortoolsettings.h"
+#include "imageiface.h"
+#include "imagewidget.h"
+#include "distortionfx.h"
+#include "distortionfxtool.h"
+#include "distortionfxtool.moc"
+
+using namespace KDcrawIface;
+using namespace Digikam;
+
+namespace DigikamDistortionFXImagesPlugin
+{
+
+DistortionFXTool::DistortionFXTool(QObject* parent)
+                : EditorToolThreaded(parent)
+{
+    setName("distortionfx");
+    setToolName(i18n("Distortion Effects"));
+    setToolIcon(SmallIcon("distortionfx"));
+
+    m_previewWidget = new ImageWidget("distortionfx Tool", 0,
+                                      i18n("<p>This is the preview of the distortion effect "
+                                           "applied to the photograph."),
+                                      false, ImageGuideWidget::HVGuideMode);
+
+    setToolView(m_previewWidget);
+
+    // -------------------------------------------------------------
+
+    m_gboxSettings = new EditorToolSettings(EditorToolSettings::Default|
+                                            EditorToolSettings::Ok|
+                                            EditorToolSettings::Cancel,
+                                            EditorToolSettings::ColorGuide);
+
+    QGridLayout* gridSettings = new QGridLayout(m_gboxSettings->plainPage(), 7, 2);
+
+    m_effectTypeLabel = new QLabel(i18n("Type:"), m_gboxSettings->plainPage());
+
+    m_effectType = new RComboBox(m_gboxSettings->plainPage());
+    m_effectType->insertItem(i18n("Fish Eyes"));
+    m_effectType->insertItem(i18n("Twirl"));
+    m_effectType->insertItem(i18n("Cylindrical Hor."));
+    m_effectType->insertItem(i18n("Cylindrical Vert."));
+    m_effectType->insertItem(i18n("Cylindrical H/V."));
+    m_effectType->insertItem(i18n("Caricature"));
+    m_effectType->insertItem(i18n("Multiple Corners"));
+    m_effectType->insertItem(i18n("Waves Hor."));
+    m_effectType->insertItem(i18n("Waves Vert."));
+    m_effectType->insertItem(i18n("Block Waves 1"));
+    m_effectType->insertItem(i18n("Block Waves 2"));
+    m_effectType->insertItem(i18n("Circular Waves 1"));
+    m_effectType->insertItem(i18n("Circular Waves 2"));
+    m_effectType->insertItem(i18n("Polar Coordinates"));
+    m_effectType->insertItem(i18n("Unpolar Coordinates"));
+    m_effectType->insertItem(i18n("Tile"));
+    m_effectType->setDefaultItem(DistortionFX::FishEye);
+    QWhatsThis::add( m_effectType, i18n("<p>Here, select the type of effect to apply to the image.<p>"
+                                        "<b>Fish Eyes</b>: warps the photograph around a 3D spherical shape to "
+                                        "reproduce the common photograph 'Fish Eyes' effect.<p>"
+                                        "<b>Twirl</b>: spins the photograph to produce a Twirl pattern.<p>"
+                                        "<b>Cylinder Hor.</b>: warps the photograph around a horizontal cylinder.<p>"
+                                        "<b>Cylinder Vert.</b>: warps the photograph around a vertical cylinder.<p>"
+                                        "<b>Cylinder H/V.</b>: warps the photograph around 2 cylinders, vertical "
+                                        "and horizontal.<p>"
+                                        "<b>Caricature</b>: distorts the photograph with the 'Fish Eyes' effect inverted.<p>"
+                                        "<b>Multiple Corners</b>: splits the photograph like a multiple corners pattern.<p>"
+                                        "<b>Waves Horizontal</b>: distorts the photograph with horizontal waves.<p>"
+                                        "<b>Waves Vertical</b>: distorts the photograph with vertical waves.<p>"
+                                        "<b>Block Waves 1</b>: divides the image into cells and makes it look as "
+                                        "if it is being viewed through glass blocks.<p>"
+                                        "<b>Block Waves 2</b>: like Block Waves 1 but with another version "
+                                        "of glass blocks distortion.<p>"
+                                        "<b>Circular Waves 1</b>: distorts the photograph with circular waves.<p>"
+                                        "<b>Circular Waves 2</b>: another variation of the Circular Waves effect.<p>"
+                                        "<b>Polar Coordinates</b>: converts the photograph from rectangular "
+                                        "to polar coordinates.<p>"
+                                        "<b>Unpolar Coordinates</b>: the Polar Coordinates effect inverted.<p>"
+                                        "<b>Tile</b>: splits the photograph into square blocks and moves "
+                                        "them randomly inside the image.<p>"
+                                        ));
+
+    m_levelLabel = new QLabel(i18n("Level:"), m_gboxSettings->plainPage());
+    m_levelInput = new RIntNumInput(m_gboxSettings->plainPage());
+    m_levelInput->setRange(0, 100, 1);
+    m_levelInput->setDefaultValue(50);
+    QWhatsThis::add( m_levelInput, i18n("<p>Set here the level of the effect."));
+
+
+    m_iterationLabel = new QLabel(i18n("Iteration:"), m_gboxSettings->plainPage());
+    m_iterationInput = new RIntNumInput(m_gboxSettings->plainPage());
+    m_iterationInput->setRange(0, 100, 1);
+    m_iterationInput->setDefaultValue(10);
+    QWhatsThis::add( m_iterationInput, i18n("<p>This value controls the iterations to use for Waves, "
+                                            "Tile, and Neon effects."));
+
+    gridSettings->addMultiCellWidget(m_effectTypeLabel,     0, 0, 0, 1);
+    gridSettings->addMultiCellWidget(m_effectType,          1, 1, 0, 1);
+    gridSettings->addMultiCellWidget(m_levelLabel,          2, 2, 0, 1);
+    gridSettings->addMultiCellWidget(m_levelInput,          3, 3, 0, 1);
+    gridSettings->addMultiCellWidget(m_iterationLabel,      4, 4, 0, 1);
+    gridSettings->addMultiCellWidget(m_iterationInput,      5, 5, 0, 1);
+    gridSettings->setRowStretch(6, 10);
+
+    setToolSettings(m_gboxSettings);
+    init();
+
+    // -------------------------------------------------------------
+
+    connect(m_effectType, SIGNAL(activated(int)),
+            this, SLOT(slotEffectTypeChanged(int)));
+
+    connect(m_levelInput, SIGNAL(valueChanged(int)),
+            this, SLOT(slotTimer()));
+
+    connect(m_iterationInput, SIGNAL(valueChanged(int)),
+            this, SLOT(slotTimer()));
+
+    connect(m_gboxSettings, SIGNAL(signalColorGuideChanged()),
+            this, SLOT(slotColorGuideChanged()));
+}
+
+DistortionFXTool::~DistortionFXTool()
+{
+}
+
+void DistortionFXTool::slotColorGuideChanged()
+{
+    m_previewWidget->slotChangeGuideColor(m_gboxSettings->guideColor());
+    m_previewWidget->slotChangeGuideSize(m_gboxSettings->guideSize());
+}
+
+void DistortionFXTool::renderingFinished()
+{
+    m_effectTypeLabel->setEnabled(true);
+    m_effectType->setEnabled(true);
+    m_levelInput->setEnabled(true);
+    m_levelLabel->setEnabled(true);
+    m_iterationInput->setEnabled(true);
+    m_iterationLabel->setEnabled(true);
+
+    switch (m_effectType->currentItem())
+    {
+        case DistortionFX::FishEye:
+        case DistortionFX::Twirl:
+        case DistortionFX::CilindricalHor:
+        case DistortionFX::CilindricalVert:
+        case DistortionFX::CilindricalHV:
+        case DistortionFX::Caricature:
+        case DistortionFX::MultipleCorners:
+            break;
+
+        case DistortionFX::PolarCoordinates:
+        case DistortionFX::UnpolarCoordinates:
+            m_levelInput->setEnabled(false);
+            m_levelLabel->setEnabled(false);
+            break;
+
+        case DistortionFX::WavesHorizontal:
+        case DistortionFX::WavesVertical:
+        case DistortionFX::BlockWaves1:
+        case DistortionFX::BlockWaves2:
+        case DistortionFX::CircularWaves1:
+        case DistortionFX::CircularWaves2:
+        case DistortionFX::Tile:
+            m_iterationInput->setEnabled(true);
+            m_iterationLabel->setEnabled(true);
+            break;
+    }
+}
+
+void DistortionFXTool::readSettings(void)
+{
+    KConfig *config = kapp->config();
+    config->setGroup("distortionfx Tool");
+
+    m_effectType->blockSignals(true);
+    m_iterationInput->blockSignals(true);
+    m_levelInput->blockSignals(true);
+
+    m_effectType->setCurrentItem(config->readNumEntry("EffectType",
+                                 m_effectType->defaultItem()));
+    m_iterationInput->setValue(config->readNumEntry("IterationAjustment",
+                               m_iterationInput->defaultValue()));
+    m_levelInput->setValue(config->readNumEntry("LevelAjustment",
+                           m_levelInput->defaultValue()));
+
+    m_effectType->blockSignals(false);
+    m_iterationInput->blockSignals(false);
+    m_levelInput->blockSignals(false);
+
+    slotEffect();
+}
+
+void DistortionFXTool::writeSettings(void)
+{
+    KConfig *config = kapp->config();
+    config->setGroup("distortionfx Tool");
+    config->writeEntry("EffectType", m_effectType->currentItem());
+    config->writeEntry("IterationAjustment", m_iterationInput->value());
+    config->writeEntry("LevelAjustment", m_levelInput->value());
+    m_previewWidget->writeSettings();
+    config->sync();
+}
+
+void DistortionFXTool::slotResetSettings()
+{
+    m_effectType->blockSignals(true);
+    m_levelInput->blockSignals(true);
+    m_iterationInput->blockSignals(true);
+
+    m_levelInput->slotReset();
+    m_iterationInput->slotReset();
+    m_effectType->slotReset();
+    slotEffectTypeChanged(m_effectType->defaultItem());
+
+    m_effectType->blockSignals(false);
+    m_levelInput->blockSignals(false);
+    m_iterationInput->blockSignals(false);
+}
+
+void DistortionFXTool::slotEffectTypeChanged(int type)
+{
+    m_levelInput->setEnabled(true);
+    m_levelLabel->setEnabled(true);
+
+    m_levelInput->blockSignals(true);
+    m_iterationInput->blockSignals(true);
+    m_levelInput->setRange(0, 100, 1);
+    m_levelInput->setValue(25);
+
+    switch (type)
+    {
+        case DistortionFX::Twirl:
+            m_levelInput->setRange(-50, 50, 1);
+            m_levelInput->setValue(10);
+            break;
+
+        case DistortionFX::FishEye:
+        case DistortionFX::CilindricalHor:
+        case DistortionFX::CilindricalVert:
+        case DistortionFX::CilindricalHV:
+        case DistortionFX::Caricature:
+            m_levelInput->setRange(0, 200, 1);
+            m_levelInput->setValue(50);
+            break;
+
+        case DistortionFX::MultipleCorners:
+            m_levelInput->setRange(1, 10, 1);
+            m_levelInput->setValue(4);
+            break;
+
+        case DistortionFX::WavesHorizontal:
+        case DistortionFX::WavesVertical:
+        case DistortionFX::BlockWaves1:
+        case DistortionFX::BlockWaves2:
+        case DistortionFX::CircularWaves1:
+        case DistortionFX::CircularWaves2:
+        case DistortionFX::Tile:
+            m_iterationInput->setEnabled(true);
+            m_iterationLabel->setEnabled(true);
+            m_iterationInput->setRange(0, 200, 1);
+            m_iterationInput->setValue(10);
+            break;
+
+        case DistortionFX::PolarCoordinates:
+        case DistortionFX::UnpolarCoordinates:
+            m_levelInput->setEnabled(false);
+            m_levelLabel->setEnabled(false);
+            break;
+    }
+
+    m_levelInput->blockSignals(false);
+    m_iterationInput->blockSignals(false);
+
+    slotEffect();
+}
+
+void DistortionFXTool::prepareEffect()
+{
+    m_effectTypeLabel->setEnabled(false);
+    m_effectType->setEnabled(false);
+    m_levelInput->setEnabled(false);
+    m_levelLabel->setEnabled(false);
+    m_iterationInput->setEnabled(false);
+    m_iterationLabel->setEnabled(false);
+
+    int l = m_levelInput->value();
+    int f = m_iterationInput->value();
+    int e = m_effectType->currentItem();
+
+    ImageIface* iface = m_previewWidget->imageIface();
+
+    uchar *data = iface->getPreviewImage();
+    DImg image(iface->previewWidth(), iface->previewHeight(), iface->previewSixteenBit(),
+                        iface->previewHasAlpha(), data);
+    delete [] data;
+
+    setFilter(dynamic_cast<DImgThreadedFilter *> (new DistortionFX(&image, this, e, l, f)));
+}
+
+void DistortionFXTool::prepareFinal()
+{
+    m_effectTypeLabel->setEnabled(false);
+    m_effectType->setEnabled(false);
+    m_levelInput->setEnabled(false);
+    m_levelLabel->setEnabled(false);
+    m_iterationInput->setEnabled(false);
+    m_iterationLabel->setEnabled(false);
+
+    int l = m_levelInput->value();
+    int f = m_iterationInput->value();
+    int e = m_effectType->currentItem();
+
+    ImageIface iface(0, 0);
+
+    setFilter(dynamic_cast<DImgThreadedFilter *> (new DistortionFX(iface.getOriginalImg(), this, e, l, f)));
+}
+
+void DistortionFXTool::putPreviewData(void)
+{
+    ImageIface* iface = m_previewWidget->imageIface();
+
+    DImg imDest = filter()->getTargetImage()
+            .smoothScale(iface->previewWidth(), iface->previewHeight());
+    iface->putPreviewImage(imDest.bits());
+
+    m_previewWidget->updatePreview();
+}
+
+void DistortionFXTool::putFinalData(void)
+{
+    ImageIface iface(0, 0);
+    DImg targetImage = filter()->getTargetImage();
+    iface.putOriginalImage(i18n("Distortion Effects"),
+            targetImage.bits(),
+            targetImage.width(), targetImage.height());
+}
+
+}  // NameSpace DigikamDistortionFXImagesPlugin
+