File indexing completed on 2025-01-05 03:51:59

 /* ============================================================
  *
  * This file is a part of digiKam project
  * https://www.digikam.org
  *
  * Date        : 2003-11-03
  * Description : painter class to draw calendar.
  *
  * SPDX-FileCopyrightText: 2003-2005 by Renchi Raju <renchi dot raju at gmail dot com>
  * SPDX-FileCopyrightText: 2007-2008 by Orgad Shaneh <orgads at gmail dot com>
  * SPDX-FileCopyrightText: 2012      by Angelo Naselli <anaselli at linux dot it>
  * SPDX-FileCopyrightText: 2012-2024 by Gilles Caulier <caulier dot gilles at gmail dot com>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  *
  * ============================================================ */
 
 #include "calpainter.h"
 
 // Qt includes
 
 #include <QDate>
 #include <QFileInfo>
 #include <QPointer>
 #include <QPaintDevice>
 #include <QRect>
 #include <QString>
 #include <QUrl>
 #include <QImage>
 #include <QLocale>
 #include <QScopedPointer>
 
 // Local includes
 
 #include "calsettings.h"
 #include "calsystem.h"
 #include "digikam_debug.h"
 #include "metaengine.h"
 #include "dimg.h"
 #include "previewloadthread.h"
 
 using namespace Digikam;
 
 namespace DigikamGenericCalendarPlugin
 {
 
 class Q_DECL_HIDDEN CalPainter::Private
 {
 public:
 
     explicit Private()
       : cancelled  (false),
         orientation(MetaEngine::ORIENTATION_UNSPECIFIED)
     {
     }
 
     bool       cancelled;
 
     int        orientation;
 
     QImage     image;
     QUrl       imagePath;
 };
 
 CalPainter::CalPainter(QPaintDevice* const pDevice)
     : QPainter(pDevice),
       d       (new Private)
 {
 }
 
 CalPainter::~CalPainter()
 {
     delete d;
 }
 
 void CalPainter::cancel()
 {
     d->cancelled = true;
 }
 
 void CalPainter::setImage(const QUrl& imagePath)
 {
     d->imagePath   = imagePath;
     QScopedPointer<MetaEngine> meta(new MetaEngine(d->imagePath.toLocalFile()));
     d->orientation = (int)meta->getItemOrientation();
 }
 
 void CalPainter::paint(int month)
 {
     if (!device())
     {
         return;
     }
 
     int width                   = device()->width();
     int height                  = device()->height();
     CalSettings* const settings = CalSettings::instance();
     CalParams& params           = CalSettings::instance()->params;
 
     // --------------------------------------------------
 
     // FIXME: magic number 42
 
     int days[42];
     int startDayOffset = QLocale().weekdays().first();
 
     for (int i = 0 ; i < 42 ; ++i)
     {
         days[i] = -1;
     }
 
     QDate date = CalSystem().date(params.year, month, 1);
     int s      = date.dayOfWeek();
 
     if ((s + 7 - startDayOffset) >= 7)
     {
         s = s - 7;
     }
 
     for (int i = s ; i < (s + CalSystem().daysInMonth(date)) ; ++i)
     {
         days[i + (7 - startDayOffset)] = i - s + 1;
     }
 
     // -----------------------------------------------
 
     QRect rCal(0, 0, 0, 0);
     QRect rImage(0, 0, 0, 0);
     QRect rCalHeader(0, 0, 0, 0);
 
     int cellSizeX;
     int cellSizeY;
 
     switch (params.imgPos)
     {
         case (CalParams::Top):
         {
             rImage.setWidth(width);
             rImage.setHeight((int)(height * params.ratio / (params.ratio + 100)));
 
             int remainingHeight = height - rImage.height();
             cellSizeX           = (width - 20) / 7;
             cellSizeY           = remainingHeight / 8;
 
             rCal.setWidth(cellSizeX * 7);
             rCal.setHeight(cellSizeY * 7);
 
             rCalHeader.setWidth(rCal.width());
             rCalHeader.setHeight(cellSizeY);
             rCalHeader.moveTop(rImage.bottom());
             rCalHeader.moveLeft(width / 2 - rCalHeader.width() / 2);
 
             rCal.moveTopLeft(rCalHeader.bottomLeft());
 
             break;
         }
 
         case (CalParams::Left):
         {
             rImage.setHeight(height);
             rImage.setWidth((int)(width * params.ratio / (params.ratio + 100)));
 
             int remainingWidth  = width - rImage.width();
             cellSizeX           = (remainingWidth - 20) / 8;
             cellSizeY           = height / 8;
 
             rCal.setWidth(cellSizeX * 7);
             rCal.setHeight(cellSizeY * 7);
 
             rCalHeader.setWidth(rCal.width());
             rCalHeader.setHeight(cellSizeY);
             rCalHeader.moveLeft(rImage.right() + cellSizeX);
 
             rCal.moveTopLeft(rCalHeader.bottomLeft());
 
             break;
         }
 
         case (CalParams::Right):
         {
             rImage.setHeight(height);
             rImage.setWidth((int)(width * params.ratio / (params.ratio + 100)));
 
             int remainingWidth  = width - rImage.width();
             cellSizeX           = (remainingWidth - 20) / 8;
             cellSizeY           = height / 8;
 
             rCal.setWidth(cellSizeX * 7);
             rCal.setHeight(cellSizeY * 7);
 
             rCalHeader.setWidth(rCal.width());
             rCalHeader.setHeight(cellSizeY);
             rCal.moveTop(rCalHeader.bottom());
 
             rImage.moveLeft(width - rImage.width());
 
             break;
         }
 
         default:
         {
             return;
         }
     }
 
     int fontPixels = cellSizeX / 3;
     params.baseFont.setPixelSize(fontPixels);
 
     // ---------------------------------------------------------------
 
     fillRect(0, 0, width, height, Qt::white);
     setFont(params.baseFont);
 
     // ---------------------------------------------------------------
 
     save();
     QFont f(params.baseFont);
     f.setBold(true);
     f.setPixelSize(f.pixelSize() + 5);
     setFont(f);
     drawText(rCalHeader, Qt::AlignLeft  | Qt::AlignVCenter, QString::number(params.year));
     drawText(rCalHeader, Qt::AlignRight | Qt::AlignVCenter, QLocale().standaloneMonthName(month));
     restore();
 
     // ---------------------------------------------------------------
 
     int   sx, sy;
     QRect r, rsmall, rSpecial;
 
     r.setWidth(cellSizeX);
     r.setHeight(cellSizeY);
 
     int index = 0;
 
     save();
 
     setPen(Qt::red);
     sy = rCal.top();
 
     for (int i = 0 ; i < 7 ; ++i)
     {
         int dayname = i + startDayOffset;
 
         if (dayname > 7)
         {
             dayname = dayname - 7;
         }
 
         sx     = cellSizeX * i + rCal.left();
         r.moveTopLeft(QPoint(sx, sy));
         rsmall = r;
         rsmall.setWidth(r.width() - (r.width() / 10));
         rsmall.setHeight(r.height() - 2);
         drawText(rsmall, Qt::AlignRight | Qt::AlignBottom,
                  QLocale().standaloneDayName(dayname, QLocale::ShortFormat));
     }
 
     restore();
 
     for (int j = 0 ; j < 6 ; ++j)
     {
         sy = cellSizeY * (j + 1) + rCal.top();
 
         for (int i = 0 ; i < 7 ; ++i)
         {
             sx     = cellSizeX * i + rCal.left();
             r.moveTopLeft(QPoint(sx, sy));
             rsmall = r;
             rsmall.setWidth(r.width() - (r.width() / 10));
             rsmall.setHeight(r.height() - 2);
 
             if (days[index] != -1)
             {
                 if (settings->isSpecial(month, days[index]))
                 {
                     save();
                     setPen(settings->getDayColor(month, days[index]));
                     drawText(rsmall, Qt::AlignRight | Qt::AlignBottom,
                              QString::number(days[index]));
 
                     QString descr = settings->getDayDescr(month, days[index]);
 
                     qCDebug(DIGIKAM_DPLUGIN_GENERIC_LOG) << "Painting special info: '" << descr
                                                          << "' for date " << days[index] << "/"
                                                          << month;
 
                     rSpecial = rsmall;
                     rSpecial.translate(2, 0);
                     QFont fnt(params.baseFont);
                     fnt.setPixelSize(fnt.pixelSize() / 3);
                     setFont(fnt);
 
                     drawText(rSpecial, Qt::AlignLeft | Qt::AlignTop, descr);
 
                     restore();
                 }
                 else
                 {
                     drawText(rsmall, Qt::AlignRight | Qt::AlignBottom,
                              QString::number(days[index]));
                 }
             }
 
             index++;
         }
     }
 
     // ---------------------------------------------------------------
 
     if (params.drawLines)
     {
         sx = rCal.left();
 
         for (int j = 0 ; j < 8 ; ++j)
         {
             sy = cellSizeY * j + rCal.top();
             drawLine(sx, sy, rCal.right(), sy);
         }
 
         sy = rCal.top();
 
         for (int i = 0 ; i < 8 ; ++i)
         {
             sx = cellSizeX * i + rCal.left();
             drawLine(sx, sy, sx, rCal.bottom());
         }
     }
 
     d->image = PreviewLoadThread::loadHighQualitySynchronously(d->imagePath.toLocalFile()).copyQImage();
 
     if (d->image.isNull())
     {
         fillRect(rImage, Qt::blue);
     }
     else
     {
         if ( d->orientation != MetaEngine::ORIENTATION_UNSPECIFIED )
         {
             QScopedPointer<MetaEngine> meta(new MetaEngine);
             meta->rotateExifQImage(d->image, (MetaEngine::ImageOrientation)d->orientation);
         }
 
         Q_EMIT signalProgress(0);
 
         d->image = d->image.scaled(rImage.width(),
                                    rImage.height(),
                                    Qt::KeepAspectRatio,
                                    Qt::SmoothTransformation);
 
         Q_EMIT signalTotal(d->image.height());
 
         int h         = d->image.height();
         int x         = rImage.bottomLeft().x() + (rImage.width() - d->image.width()) / 2;
         int y         = (rImage.height() - h) / 2;
         int blockSize = 10;
         int block     = 0;
 
         while ((block < h) && !d->cancelled)
         {
             if (block + blockSize > h)
             {
                 blockSize = h - block;
             }
 
             drawImage(x, y + block, d->image, 0, block, d->image.width(), blockSize);
             block += blockSize;
             Q_EMIT signalProgress(block);
         }
 
         Q_EMIT signalFinished();
     }
 }
 
 } // namespace Digikam
 
 #include "moc_calpainter.cpp"