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digikam/digikam/imageplugins/lensdistortion/lensdistortiontool.cpp

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/* ============================================================
*
* This file is a part of digiKam project
* http://www.digikam.org
*
* Date : 2004-12-27
* Description : a plugin to reduce lens distorsions to an image.
*
* Copyright (C) 2004-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
* Copyright (C) 2006-2008 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
*
* 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.
*
* ============================================================ */
// C++ includes.
#include <cstring>
#include <cmath>
#include <cstdlib>
// TQt includes.
#include <tqbrush.h>
#include <tqlabel.h>
#include <tqlayout.h>
#include <tqpainter.h>
#include <tqpen.h>
#include <tqpixmap.h>
#include <tqwhatsthis.h>
#include <tqimage.h>
// KDE includes.
#include <tdeaboutdata.h>
#include <tdeapplication.h>
#include <tdeconfig.h>
#include <kiconloader.h>
#include <tdelocale.h>
#include <kstandarddirs.h>
// LibKDcraw includes.
#include <libkdcraw/rnuminput.h>
// Local includes.
#include "daboutdata.h"
#include "ddebug.h"
#include "imageiface.h"
#include "imagewidget.h"
#include "editortoolsettings.h"
#include "lensdistortion.h"
#include "lensdistortiontool.h"
#include "lensdistortiontool.moc"
using namespace KDcrawIface;
using namespace Digikam;
namespace DigikamLensDistortionImagesPlugin
{
LensDistortionTool::LensDistortionTool(TQObject* parent)
: EditorToolThreaded(parent)
{
setName("lensdistortion");
setToolName(i18n("Lens Distortion"));
setToolIcon(SmallIcon("lensdistortion"));
m_previewWidget = new ImageWidget("lensdistortion Tool", 0, TQString(),
false, ImageGuideWidget::HVGuideMode);
setToolView(m_previewWidget);
// -------------------------------------------------------------
m_gboxSettings = new EditorToolSettings(EditorToolSettings::Default|
EditorToolSettings::Ok|
EditorToolSettings::Cancel,
EditorToolSettings::ColorGuide);
TQGridLayout* grid = new TQGridLayout(m_gboxSettings->plainPage(), 9, 1);
m_maskPreviewLabel = new TQLabel( m_gboxSettings->plainPage() );
m_maskPreviewLabel->setAlignment ( TQt::AlignHCenter | TQt::AlignVCenter );
TQWhatsThis::add( m_maskPreviewLabel, i18n("<p>You can see here a thumbnail preview of the distortion correction "
"applied to a cross pattern.") );
// -------------------------------------------------------------
TQLabel *label1 = new TQLabel(i18n("Main:"), m_gboxSettings->plainPage());
m_mainInput = new RDoubleNumInput(m_gboxSettings->plainPage());
m_mainInput->setPrecision(1);
m_mainInput->setRange(-100.0, 100.0, 0.1);
m_mainInput->setDefaultValue(0.0);
TQWhatsThis::add(m_mainInput, i18n("<p>This value controls the amount of distortion. Negative values correct lens barrel "
"distortion, while positive values correct lens pincushion distortion."));
// -------------------------------------------------------------
TQLabel *label2 = new TQLabel(i18n("Edge:"), m_gboxSettings->plainPage());
m_edgeInput = new RDoubleNumInput(m_gboxSettings->plainPage());
m_edgeInput->setPrecision(1);
m_edgeInput->setRange(-100.0, 100.0, 0.1);
m_edgeInput->setDefaultValue(0.0);
TQWhatsThis::add(m_edgeInput, i18n("<p>This value controls in the same manner as the Main control, but has more effect "
"at the edges of the image than at the center."));
// -------------------------------------------------------------
TQLabel *label3 = new TQLabel(i18n("Zoom:"), m_gboxSettings->plainPage());
m_rescaleInput = new RDoubleNumInput(m_gboxSettings->plainPage());
m_rescaleInput->setPrecision(1);
m_rescaleInput->setRange(-100.0, 100.0, 0.1);
m_rescaleInput->setDefaultValue(0.0);
TQWhatsThis::add(m_rescaleInput, i18n("<p>This value rescales the overall image size."));
// -------------------------------------------------------------
TQLabel *label4 = new TQLabel(i18n("Brighten:"), m_gboxSettings->plainPage());
m_brightenInput = new RDoubleNumInput(m_gboxSettings->plainPage());
m_brightenInput->setPrecision(1);
m_brightenInput->setRange(-100.0, 100.0, 0.1);
m_brightenInput->setDefaultValue(0.0);
TQWhatsThis::add(m_brightenInput, i18n("<p>This value adjusts the brightness in image corners."));
grid->addMultiCellWidget(m_maskPreviewLabel, 0, 0, 0, 1);
grid->addMultiCellWidget(label1, 1, 1, 0, 1);
grid->addMultiCellWidget(m_mainInput, 2, 2, 0, 1);
grid->addMultiCellWidget(label2, 3, 3, 0, 1);
grid->addMultiCellWidget(m_edgeInput, 4, 4, 0, 1);
grid->addMultiCellWidget(label3, 5, 5, 0, 1);
grid->addMultiCellWidget(m_rescaleInput, 6, 6, 0, 1);
grid->addMultiCellWidget(label4, 7, 7, 0, 1);
grid->addMultiCellWidget(m_brightenInput, 8, 8, 0, 1);
grid->setRowStretch(9, 10);
grid->setMargin(m_gboxSettings->spacingHint());
grid->setSpacing(m_gboxSettings->spacingHint());
setToolSettings(m_gboxSettings);
init();
// -------------------------------------------------------------
connect(m_mainInput, TQT_SIGNAL(valueChanged(double)),
this, TQT_SLOT(slotTimer()));
connect(m_edgeInput, TQT_SIGNAL(valueChanged(double)),
this, TQT_SLOT(slotTimer()));
connect(m_rescaleInput, TQT_SIGNAL(valueChanged(double)),
this, TQT_SLOT(slotTimer()));
connect(m_brightenInput, TQT_SIGNAL(valueChanged(double)),
this, TQT_SLOT(slotTimer()));
connect(m_gboxSettings, TQT_SIGNAL(signalColorGuideChanged()),
this, TQT_SLOT(slotColorGuideChanged()));
// -------------------------------------------------------------
/* Calc transform preview.
We would like a checkered area to demonstrate the effect.
We do not have any drawing support in DImg, so we let TQt draw.
First we create a white TQImage. We convert this to a TQPixmap,
on which we can draw. Then we convert back to TQImage,
convert the TQImage to a DImg which we only need to create once, here.
Later, we apply the effect on a copy and convert the DImg to TQPixmap.
Longing for TQt4 where we can paint directly on the TQImage...
*/
TQImage preview(120, 120, 32);
memset(preview.bits(), 255, preview.numBytes());
TQPixmap pix (preview);
TQPainter pt(&pix);
pt.setPen( TQPen(TQt::black, 1) );
pt.fillRect( 0, 0, pix.width(), pix.height(), TQBrush(TQt::black, TQt::CrossPattern) );
pt.drawRect( 0, 0, pix.width(), pix.height() );
pt.end();
TQImage preview2(pix.convertToImage());
m_previewRasterImage = DImg(preview2.width(), preview2.height(), false, false, preview2.bits());
}
LensDistortionTool::~LensDistortionTool()
{
}
void LensDistortionTool::slotColorGuideChanged()
{
m_previewWidget->slotChangeGuideColor(m_gboxSettings->guideColor());
m_previewWidget->slotChangeGuideSize(m_gboxSettings->guideSize());
}
void LensDistortionTool::readSettings()
{
TDEConfig *config = kapp->config();
config->setGroup("lensdistortion Tool");
m_mainInput->blockSignals(true);
m_edgeInput->blockSignals(true);
m_rescaleInput->blockSignals(true);
m_brightenInput->blockSignals(true);
m_mainInput->setValue(config->readDoubleNumEntry("2nd Order Distortion", m_mainInput->defaultValue()));
m_edgeInput->setValue(config->readDoubleNumEntry("4th Order Distortion",m_edgeInput->defaultValue()));
m_rescaleInput->setValue(config->readDoubleNumEntry("Zoom Factor", m_rescaleInput->defaultValue()));
m_brightenInput->setValue(config->readDoubleNumEntry("Brighten", m_brightenInput->defaultValue()));
m_gboxSettings->setGuideColor(config->readColorEntry("Guide Color", &TQt::red));
m_gboxSettings->setGuideSize(config->readNumEntry("Guide Width", 1));
m_mainInput->blockSignals(false);
m_edgeInput->blockSignals(false);
m_rescaleInput->blockSignals(false);
m_brightenInput->blockSignals(false);
slotColorGuideChanged();
slotEffect();
}
void LensDistortionTool::writeSettings()
{
TDEConfig *config = kapp->config();
config->setGroup("lensdistortion Tool");
config->writeEntry("2nd Order Distortion", m_mainInput->value());
config->writeEntry("4th Order Distortion", m_edgeInput->value());
config->writeEntry("Zoom Factor", m_rescaleInput->value());
config->writeEntry("Brighten", m_brightenInput->value());
config->writeEntry("Guide Color", m_gboxSettings->guideColor());
config->writeEntry("Guide Width", m_gboxSettings->guideSize());
m_previewWidget->writeSettings();
config->sync();
}
void LensDistortionTool::slotResetSettings()
{
m_mainInput->blockSignals(true);
m_edgeInput->blockSignals(true);
m_rescaleInput->blockSignals(true);
m_brightenInput->blockSignals(true);
m_mainInput->slotReset();
m_edgeInput->slotReset();
m_rescaleInput->slotReset();
m_brightenInput->slotReset();
m_mainInput->blockSignals(false);
m_edgeInput->blockSignals(false);
m_rescaleInput->blockSignals(false);
m_brightenInput->blockSignals(false);
}
void LensDistortionTool::prepareEffect()
{
m_mainInput->setEnabled(false);
m_edgeInput->setEnabled(false);
m_rescaleInput->setEnabled(false);
m_brightenInput->setEnabled(false);
double m = m_mainInput->value();
double e = m_edgeInput->value();
double r = m_rescaleInput->value();
double b = m_brightenInput->value();
LensDistortion transformPreview(&m_previewRasterImage, 0L, m, e, r, b, 0, 0);
m_maskPreviewLabel->setPixmap(TQPixmap(transformPreview.getTargetImage().convertToPixmap()));
ImageIface* iface = m_previewWidget->imageIface();
setFilter(dynamic_cast<DImgThreadedFilter*>(new LensDistortion(iface->getOriginalImg(), this, m, e, r, b, 0, 0)));
}
void LensDistortionTool::prepareFinal()
{
m_mainInput->setEnabled(false);
m_edgeInput->setEnabled(false);
m_rescaleInput->setEnabled(false);
m_brightenInput->setEnabled(false);
double m = m_mainInput->value();
double e = m_edgeInput->value();
double r = m_rescaleInput->value();
double b = m_brightenInput->value();
ImageIface iface(0, 0);
setFilter(dynamic_cast<DImgThreadedFilter*>(new LensDistortion(iface.getOriginalImg(), this, m, e, r, b, 0, 0)));
}
void LensDistortionTool::putPreviewData()
{
ImageIface* iface = m_previewWidget->imageIface();
DImg imDest = filter()->getTargetImage().smoothScale(iface->previewWidth(), iface->previewHeight());
iface->putPreviewImage(imDest.bits());
m_previewWidget->updatePreview();
}
void LensDistortionTool::putFinalData()
{
ImageIface iface(0, 0);
iface.putOriginalImage(i18n("Lens Distortion"), filter()->getTargetImage().bits());
}
void LensDistortionTool::renderingFinished()
{
m_mainInput->setEnabled(true);
m_edgeInput->setEnabled(true);
m_rescaleInput->setEnabled(true);
m_brightenInput->setEnabled(true);
}
} // NameSpace DigikamLensDistortionImagesPlugin