File indexing completed on 2025-01-19 12:59:16

 /************************************************************************
  *                                  *
  *  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) 2013-2016 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 "autoselectbar.h"
 
 #include <qtoolbutton.h>
 #include <qlayout.h>
 #include <qlabel.h>
 #include <qslider.h>
 #include <qicon.h>
 #include <qframe.h>
 #include <qpalette.h>
 
 #include <klocalizedstring.h>
 
 #include "autoselectdialog.h"
 #include "kscancontrols.h"
 #include "scansettings.h"
 #include "dialogbase.h"
 
 
 AutoSelectBar::AutoSelectBar(int initialValue, QWidget *parent)
     : QWidget(parent)
 {
     setObjectName("AutoSelectBar");
 
     QHBoxLayout *hbl = new QHBoxLayout;
 
     QLabel *l = new QLabel(xi18nc("@info", "<subtitle>Auto Select</subtitle>"));
     hbl->addWidget(l);
 
     hbl->addSpacing(2*DialogBase::horizontalSpacing());
 
     // Threshold setting label
     const KConfigSkeletonItem *item = ScanSettings::self()->previewAutoselThresholdItem();
     l = new QLabel(item->label());
     hbl->addWidget(l);
 
     // Threshold setting slider/spinbox
     int maxThresh = item->maxValue().toInt();
     mThresholdSlider = new KScanSlider(nullptr, QString());
     mThresholdSlider->setRange(0, maxThresh, -1, initialValue);
     mThresholdSlider->setToolTip(item->toolTip());
     l->setBuddy(mThresholdSlider);
 
     connect(mThresholdSlider, QOverload<int>::of(&KScanSlider::settingChanged), this, &AutoSelectBar::slotThresholdChanged);
     hbl->addWidget(mThresholdSlider);
     hbl->setStretchFactor(mThresholdSlider, 1);
 
     mColourPatch = new QFrame(this);
     // from kdelibs4support/src/kdeui/kcolordialog.cpp
     mColourPatch->setFrameStyle(QFrame::StyledPanel|QFrame::Sunken);
     mColourPatch->setMinimumWidth(32);
     mColourPatch->setAutoFillBackground(true);
     mColourPatch->setToolTip(i18nc("@info:tooltip", "This is the grayscale value of the selected threshold"));
     hbl->addWidget(mColourPatch);
 
     hbl->addSpacing(DialogBase::horizontalSpacing());
 
     // Refresh/recalculate button
     QToolButton *but = new QToolButton;
     but->setIcon(QIcon::fromTheme("view-refresh"));
     but->setToolTip(i18nc("@info:tooltip", "Perform the auto-detection again"));
     connect(but, &QAbstractButton::clicked, this, &AutoSelectBar::performSelection);
     hbl->addWidget(but);
 
     // Advanced settings button
     but = new QToolButton;
     but->setIcon(QIcon::fromTheme("configure"));
     but->setToolTip(i18nc("@info:tooltip", "Advanced settings for auto-detection"));
     connect(but, &QAbstractButton::clicked, this, &AutoSelectBar::slotShowSettings);
     hbl->addWidget(but);
 
     setLayout(hbl);
 
     slotThresholdChanged(mThresholdSlider->value());    // update the colour patch
 }
 
 
 void AutoSelectBar::slotThresholdChanged(int value)
 {
     int colValue = value;
     if (mBgIsWhite) {
         colValue = 255 - colValue;
     }
 
     QPalette pal = mColourPatch->palette();
     pal.setColor(QPalette::Normal, QPalette::Window, qRgb(colValue, colValue, colValue));
     mColourPatch->setPalette(pal);
     emit thresholdChanged(value);
 }
 
 void AutoSelectBar::slotShowSettings()
 {
     AutoSelectDialog *d = new AutoSelectDialog(this);
     d->setSettings(mMargin, mBgIsWhite, mDustsize);
     connect(d, &AutoSelectDialog::settingsChanged, this, &AutoSelectBar::setAdvancedSettings);
     connect(d, &AutoSelectDialog::settingsChanged, this, &AutoSelectBar::advancedSettingsChanged);
     d->show();
 }
 
 void AutoSelectBar::setThreshold(int thresh)
 {
     mThresholdSlider->setValue(thresh);
 }
 
 void AutoSelectBar::setAdvancedSettings(int margin, bool bgIsWhite, int dustsize)
 {
     // just retained for dialogue
     mMargin = margin;
     mBgIsWhite = bgIsWhite;
     mDustsize = dustsize;
 }