File indexing completed on 2025-01-19 12:59:17

 /************************************************************************
  *                                  *
  *  This file is part of Kooka, a scanning/OCR application using    *
  *  Qt <http://www.qt.io> and KDE Frameworks <http://www.kde.org>.  *
  *                                  *
  *  Copyright (C) 2000-2016 Klaas Freitag <freitag@suse.de>     *
  *                          Jonathan Marten <jjm@keelhaul.me.uk>    *
  *                                  *
  *  Kooka is free software; you can redistribute it and/or modify it    *
  *  under the terms of the GNU Library General Public License as    *
  *  published by the Free Software Foundation and appearing in the  *
  *  file COPYING included in the packaging of this file;  either    *
  *  version 2 of the License, or (at your option) any later version.    *
  *                                  *
  *  As a special exception, permission is given to link this program    *
  *  with any version of the KADMOS OCR/ICR engine (a product of     *
  *  reRecognition GmbH, Kreuzlingen), and distribute the resulting  *
  *  executable without including the source code for KADMOS in the  *
  *  source distribution.                        *
  *                                  *
  *  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.            *
  *                                  *
  *  You should have received a copy of the GNU General Public       *
  *  License along with this program;  see the file COPYING.  If     *
  *  not, see <http://www.gnu.org/licenses/>.                *
  *                                  *
  ************************************************************************/
 
 #include "gammadialog.h"
 
 #include <qlabel.h>
 #include <qgridlayout.h>
 #include <qdialogbuttonbox.h>
 #include <qpushbutton.h>
 
 #include <klocalizedstring.h>
 #include <kgammatable.h>
 
 #include "kscancontrols.h"
 #include "gammawidget.h"
 
 
 GammaDialog::GammaDialog(const KGammaTable *table, QWidget *parent)
     : DialogBase(parent)
 {
     setObjectName("GammaDialog");
 
     setModal(true);
     setButtons(QDialogButtonBox::Ok|QDialogButtonBox::Cancel|QDialogButtonBox::Apply|QDialogButtonBox::Reset);
     setWindowTitle(i18n("Edit Gamma Table"));
 
     mTable = new KGammaTable(*table);           // take our own copy
 
     QWidget *page = new QWidget(this);
     QGridLayout *gl = new QGridLayout(page);
 
     // Sliders for brightness, contrast, gamma
     mSetBright = new KScanSlider(page, i18n("Brightness"));
     mSetBright->setRange(-50, 50);
     mSetBright->setValue(mTable->getBrightness());
     connect(mSetBright, QOverload<int>::of(&KScanSlider::settingChanged), mTable, &KGammaTable::setBrightness);
     QLabel *l = new QLabel(mSetBright->label(), page);
     l->setBuddy(mSetBright);
     gl->setRowMinimumHeight(0, verticalSpacing());
     gl->addWidget(l, 1, 0, Qt::AlignRight);
     gl->addWidget(mSetBright, 1, 1);
 
     mSetContrast = new KScanSlider(page, i18n("Contrast"));
     mSetContrast->setRange(-50, 50);
     mSetContrast->setValue(mTable->getContrast());
     connect(mSetContrast, QOverload<int>::of(&KScanSlider::settingChanged), mTable, &KGammaTable::setContrast);
     l = new QLabel(mSetContrast->label(), page);
     l->setBuddy(mSetContrast);
     gl->setRowMinimumHeight(2, verticalSpacing());
     gl->addWidget(l, 3, 0, Qt::AlignRight);
     gl->addWidget(mSetContrast, 3, 1);
 
     mSetGamma = new KScanSlider(page, i18n("Gamma"));
     mSetGamma->setRange(30, 300);
     mSetGamma->setValue(mTable->getGamma());
     connect(mSetGamma, QOverload<int>::of(&KScanSlider::settingChanged), mTable, &KGammaTable::setGamma);
     l = new QLabel(mSetGamma->label(), page);
     l->setBuddy(mSetGamma);
     gl->setRowMinimumHeight(4, verticalSpacing());
     gl->addWidget(l, 5, 0, Qt::AlignRight);
     gl->addWidget(mSetGamma, 5, 1);
 
     // Explanation label
     gl->setRowMinimumHeight(6, verticalSpacing());
     gl->setRowStretch(7, 1);
 
     l = new QLabel(i18n("This gamma table is passed to the scanner hardware."), page);
     l->setWordWrap(true);
     gl->addWidget(l, 8, 0, 1, 2, Qt::AlignLeft);
 
     // Gamma curve display
     mGtDisplay = new GammaWidget(mTable, page);
     mGtDisplay->resize(280, 280);
     gl->setColumnMinimumWidth(2, horizontalSpacing());
     gl->addWidget(mGtDisplay, 0, 3, -1, 1);
     gl->setColumnStretch(3, 1);
 //    gl->setColumnStretch(1, 1);
 
     setMainWidget(page);
     connect(buttonBox()->button(QDialogButtonBox::Apply), &QAbstractButton::clicked, this, &GammaDialog::slotApply);
     connect(buttonBox()->button(QDialogButtonBox::Reset), &QAbstractButton::clicked, this, &GammaDialog::slotReset);
 }
 
 
 void GammaDialog::slotApply()
 {
     emit gammaToApply(gammaTable());
 }
 
 
 void GammaDialog::slotReset()
 {
     KGammaTable defaultGamma;               // construct with default values
     int b = defaultGamma.getBrightness();       // retrieve those values
     int c = defaultGamma.getContrast();
     int g = defaultGamma.getGamma();
 
     mSetBright->setValue(b);
     mSetContrast->setValue(c);
     mSetGamma->setValue(g);
 
     mTable->setAll(g, b, c);
 }