File indexing completed on 2025-04-27 03:58:28

 /* ============================================================
  *
  * This file is a part of digiKam project
  * https://www.digikam.org
  *
  * Date        : 2010-01-16
  * Description : Qt item view for images - common delegate code
  *
  * SPDX-FileCopyrightText: 2002-2005 by Renchi Raju <renchi dot raju at gmail dot com>
  * SPDX-FileCopyrightText:      2009 by Andi Clemens <andi dot clemens at gmail dot com>
  * SPDX-FileCopyrightText: 2002-2024 by Gilles Caulier <caulier dot gilles at gmail dot com>
  * SPDX-FileCopyrightText: 2006-2011 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  *
  * ============================================================ */
 
 #include "ditemdelegate.h"
 
 // C++ includes
 
 #include <cmath>
 
 // Qt includes
 
 #include <QApplication>
 #include <QCache>
 #include <QPainter>
 #include <QLocale>
 
 // KDE includes
 
 #include <klocalizedstring.h>
 
 // Local includes
 
 #include "itemviewcategorized.h"
 #include "thememanager.h"
 #include "thumbbardock.h"
 
 namespace Digikam
 {
 
 class Q_DECL_HIDDEN DItemDelegate::Private
 {
 public:
 
     explicit Private()
     {
     }
 
     QCache<QString, QPixmap> thumbnailBorderCache;
     QCache<QString, QString> squeezedTextCache;
 };
 
 DItemDelegate::DItemDelegate(QObject* const parent)
     : QAbstractItemDelegate(parent),
       d                    (new Private)
 {
 }
 
 DItemDelegate::~DItemDelegate()
 {
     delete d;
 }
 
 void DItemDelegate::clearCaches()
 {
     d->thumbnailBorderCache.clear();
     d->squeezedTextCache.clear();
 }
 
 QPixmap DItemDelegate::thumbnailBorderPixmap(const QSize& pixSize, bool isGrouped) const
 {
     const QColor borderColor = QColor(0, 0, 0, 128);
     QString cacheKey         = QString::number(pixSize.width())  + QLatin1Char('-')
                              + QString::number(pixSize.height()) + QLatin1Char('-')
                              + QString::number(isGrouped);
     QPixmap* const cachePix  = d->thumbnailBorderCache.object(cacheKey);
 
     if (!cachePix)
     {
         const int radius = 3;
         QPixmap pix;
         const int width  = pixSize.width()  + 2*radius;
         const int height = pixSize.height() + 2*radius;
 
         if (isGrouped)
         {
             pix = ThumbBarDock::generateFuzzyRectForGroup(QSize(width, height),
                                                           borderColor,
                                                           radius);
         }
         else
         {
             pix = ThumbBarDock::generateFuzzyRect(QSize(width, height),
                                                   borderColor,
                                                   radius);
         }
 
         d->thumbnailBorderCache.insert(cacheKey, new QPixmap(pix));
         return pix;
     }
 
     return *cachePix;
 }
 
 QPixmap DItemDelegate::makeDragPixmap(const QStyleOptionViewItem& option,
                                       const QList<QModelIndex>& indexes,
                                       double displayRatio,
                                       const QPixmap& suggestedPixmap)
 {
     int iconSize = qRound(64.0 * displayRatio);
     QPixmap icon = suggestedPixmap;
 
     if (icon.isNull())
     {
         icon = QPixmap(QIcon::fromTheme(QLatin1String("image-jpeg")).pixmap(32));
     }
 
     if (qMax(icon.width(), icon.height()) > iconSize)
     {
         icon = icon.scaled(iconSize, iconSize, Qt::KeepAspectRatio,
                                                Qt::SmoothTransformation);
     }
 
     int w                 = icon.width();
     int h                 = icon.height();
     const int borderWidth = 6;
 
     QSizeF drawSize       = QSizeF(w, h) / displayRatio;
     QRect  rect(0, 0, w + qRound((double)borderWidth * 2.0 * displayRatio),
                       h + qRound((double)borderWidth * 2.0 * displayRatio));
     QRect  pixmapRect(QPoint(borderWidth, borderWidth), drawSize.toSize());
 
     QPixmap pix(rect.size());
     pix.setDevicePixelRatio(displayRatio);
     QPainter p(&pix);
 
 /*
     // border
     p.fillRect(0, 0, pix.width()-1, pix.height()-1, QColor(Qt::white));
     p.setPen(QPen(Qt::black, 1));
     p.drawRect(0, 0, pix.width()-1, pix.height()-1);
 */
 
     QStyleOption opt(option);
     opt.rect = rect;
     qApp->style()->drawPrimitive(QStyle::PE_PanelTipLabel, &opt, &p);
 
     p.drawPixmap(pixmapRect, icon);
 
     QFont f(option.font);
     f.setBold(true);
     p.setFont(f);
 
     if (indexes.size() > 1)
     {
         QRect   textRect;
         QString text;
 
         QString text2(i18np("1 Image", "%1 Images", indexes.count()));
         QString text1 = QString::number(indexes.count());
         QRect r1      = p.boundingRect(pixmapRect, Qt::AlignLeft | Qt::AlignTop, text1).adjusted(0, 0, 1, 1);
         QRect r2      = p.boundingRect(pixmapRect, Qt::AlignLeft | Qt::AlignTop, text2).adjusted(0, 0, 1, 1);
 
         if ((r2.width() > pixmapRect.width()) || (r2.height() > pixmapRect.height()))
         {
 //            textRect     = r1;
             text         = text1;
             int rectSize = qMax(r1.width(), r1.height());
             textRect     = QRect(0, 0, rectSize, rectSize);
         }
         else
         {
             textRect = QRect(0, 0, r2.width(), r2.height());
             text     = text2;
         }
 
         textRect.moveLeft((pixmapRect.width() - textRect.width()) / 2 + pixmapRect.x());
         textRect.moveTop((pixmapRect.height() - textRect.height()) * 4 / 5);
         p.fillRect(textRect, QColor(0, 0, 0, 128));
         p.setPen(Qt::white);
         p.drawText(textRect, Qt::AlignCenter, text);
     }
 
     return pix;
 }
 
 QString DItemDelegate::dateToString(const QDateTime& datetime)
 {
     return QLocale().toString(datetime, QLocale::ShortFormat);
 }
 
 QString DItemDelegate::squeezedTextCached(QPainter* const p, int width, const QString& text) const
 {
     QCache<QString, QString>* const cache = &const_cast<DItemDelegate*>(this)->d->squeezedTextCache;
 
     // We do not need to include the font into cache key, the cache is cleared on font change
 
     QString cacheKey                      = QString::number(width) + QString::number(qHash(text));
     QString* const cachedString           = cache->object(cacheKey);
 
     if (cachedString)
     {
         return *cachedString;
     }
 
     QString result = squeezedText(p->fontMetrics(), width, text);
     cache->insert(cacheKey, new QString(result));
 
     return result;
 }
 
 QString DItemDelegate::squeezedText(const QFontMetrics& fm, int width, const QString& text)
 {
     QString fullText(text);
     fullText.replace(QLatin1Char('\n'), QLatin1Char(' '));
 
     return fm.elidedText(text, Qt::ElideRight, width);
 }
 
 } // namespace Digikam
 
 #include "moc_ditemdelegate.cpp"