File indexing completed on 2024-04-14 14:36:04

 /************************************************************************
  *                                  *
  *  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/>.                *
  *                                  *
  ************************************************************************/
 
 #ifndef PREVIEWER_H
 #define PREVIEWER_H
 
 #include "kookascan_export.h"
 
 #include <qvector.h>
 #include <qframe.h>
 
 #include <kruler.h>
 
 #include "scanimage.h"
 
 /**
   *@author Klaas Freitag
   */
 
 class KScanDevice;
 
 class ImageCanvas;
 class AutoSelectBar;
 
 
 class KOOKASCAN_EXPORT Previewer : public QFrame
 {
     Q_OBJECT
 
 public:
     explicit Previewer(QWidget *parent = nullptr);
     virtual ~Previewer() = default;
 
     ImageCanvas *getImageCanvas() const         { return (mCanvas); }
 
     bool setPreviewImage(ScanImage::Ptr image);
     void newImage(ScanImage::Ptr image);
     void setScannerBedSize(int w, int h);
     void setDisplayUnit(KRuler::MetricStyle unit);
     void connectScanner(KScanDevice *scan);
 
     static QString previewInfoString(double widthMm, double heightMm, int resX, int resY);
 
 public slots:
     void slotNewAreaSelected(const QRectF &rect);
     void slotNewScanResolutions(int xres, int yres);
     void slotNewScanMode(int bytes_per_pix);
     void slotSetAutoSelThresh(int);
     void slotAutoSelToggled(bool);
 
     void slotNewCustomScanSize(const QRect &rect);
 
 protected slots:
     void slotAutoSelectSettingsChanged(int margin, bool bgIsWhite, int dustsize);
 
 signals:
     void newPreviewRect(const QRect &rect);
     void autoSelectStateChanged(bool isAvailable, bool isOn);
     void previewDimsChanged(const QString &dims);
     void previewFileSizeChanged(long size);
 
 private:
     bool checkForScannerBg();
 
     void updateSelectionDims();
 
     void resetAutoSelection();
     void setAutoSelection(bool on);
     bool imagePiece(const QVector<long> &src, int *start, int *end);
 
 private slots:
     void slotNotifyAutoSelectChanged();
     void slotFindAutoSelection();
 
 private:
     ImageCanvas *mCanvas;
     AutoSelectBar *mAutoSelectBar;
     KScanDevice *mScanDevice;
 
     int mBedWidth, mBedHeight;
     int mScanResX, mScanResY;
     int mBytesPerPix;
     double mSelectionWidthMm, mSelectionHeightMm;
     KRuler::MetricStyle mDisplayUnit;
 
     bool mDoAutoSelection;
     int mAutoSelMargin;
     int mAutoSelThresh;
     int mAutoSelDustsize;
     bool mBgIsWhite;
 
     QVector<long> mHeightSum;
     QVector<long> mWidthSum;
 };
 
 #endif                          // PREVIEWER_H