File indexing completed on 2024-12-08 04:34:09

 /*
    SPDX-FileCopyrightText: 2022-2024 Laurent Montel <montel@kde.org>
 
    SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "bannerinfolistviewdelegate.h"
 #include "config-ruqola.h"
 #include "model/bannerinfosmodel.h"
 #if USE_SIZEHINT_CACHE_SUPPORT
 #include "ruqola_sizehint_cache_debug.h"
 #endif
 
 #include <KColorScheme>
 #include <KLocalizedString>
 #include <QAbstractItemView>
 #include <QPainter>
 #include <QToolTip>
 
 #include "delegateutils/messagedelegateutils.h"
 #include "delegateutils/textselectionimpl.h"
 #include "rocketchataccount.h"
 
 BannerInfoListViewDelegate::BannerInfoListViewDelegate(QListView *view, RocketChatAccount *account, QObject *parent)
     : MessageListDelegateBase(view, parent)
     , mRocketChatAccount(account)
 {
 }
 
 BannerInfoListViewDelegate::~BannerInfoListViewDelegate() = default;
 
 void BannerInfoListViewDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
 {
     painter->save();
 
     const Layout layout = doLayout(option, index);
 
     // Draw Text
     if (layout.textRect.isValid()) {
         auto *doc = documentForModelIndex(index, layout.textRect.width());
         if (doc) {
             MessageDelegateUtils::drawSelection(doc,
                                                 layout.textRect,
                                                 layout.textRect.top(),
                                                 painter,
                                                 index,
                                                 option,
                                                 mTextSelectionImpl->textSelection(),
                                                 {},
                                                 {},
                                                 false);
         }
     }
 
     // debug
     // painter->drawRect(option.rect.adjusted(0, 0, -1, -1));
     painter->restore();
 }
 
 QSize BannerInfoListViewDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
 {
 #if USE_SIZEHINT_CACHE_SUPPORT
     const QString identifier = cacheIdentifier(index);
     auto it = mSizeHintCache.find(identifier);
     if (it != mSizeHintCache.end()) {
         const QSize result = it->value;
         qCDebug(RUQOLA_SIZEHINT_CACHE_LOG) << "BannerInfoListViewDelegate: SizeHint found in cache: " << result;
         return result;
     }
 #endif
     // Note: option.rect in this method is huge (as big as the viewport)
     const Layout layout = doLayout(option, index);
 
     int additionalHeight = 0;
     // A little bit of margin below the very last item, it just looks better
     if (index.row() == index.model()->rowCount() - 1) {
         additionalHeight += 4;
     }
 
     // contents is date + text
     const int contentsHeight = layout.textRect.height() - option.rect.y();
     //    qDebug() << "senderAndAvatarHeight" << senderAndAvatarHeight << "text" << layout.textRect.height() << "total contents" << contentsHeight;
     //    qDebug() << "=> returning" << qMax(senderAndAvatarHeight, contentsHeight) + additionalHeight;
 
     const QSize size = {option.rect.width(), contentsHeight + additionalHeight};
 #if USE_SIZEHINT_CACHE_SUPPORT
     if (!size.isEmpty()) {
         mSizeHintCache.insert(identifier, size);
     }
 #endif
     return size;
 }
 
 bool BannerInfoListViewDelegate::helpEvent(QHelpEvent *helpEvent, QAbstractItemView *view, const QStyleOptionViewItem &option, const QModelIndex &index)
 {
     if (!helpEvent || !view || !index.isValid()) {
         return QItemDelegate::helpEvent(helpEvent, view, option, index);
     }
 
     if (helpEvent->type() != QEvent::ToolTip) {
         return false;
     }
 
     const Layout layout = doLayout(option, index);
     const auto *doc = documentForModelIndex(index, layout.textRect.width());
     if (!doc) {
         return false;
     }
 
     const QPoint relativePos = adaptMousePosition(helpEvent->pos(), layout.textRect, option);
     QString formattedTooltip;
     if (MessageDelegateUtils::generateToolTip(doc, relativePos, formattedTooltip)) {
         QToolTip::showText(helpEvent->globalPos(), formattedTooltip, view);
         return true;
     }
     return true;
 }
 
 bool BannerInfoListViewDelegate::mouseEvent(QEvent *event, const QStyleOptionViewItem &option, const QModelIndex &index)
 {
     const QEvent::Type eventType = event->type();
     if (eventType == QEvent::MouseButtonRelease) {
         auto mev = static_cast<QMouseEvent *>(event);
         const Layout layout = doLayout(option, index);
 
         if (handleMouseEvent(mev, layout.textRect, option, index)) {
             return true;
         }
     } else if (eventType == QEvent::MouseButtonPress || eventType == QEvent::MouseMove || eventType == QEvent::MouseButtonDblClick) {
         auto mev = static_cast<QMouseEvent *>(event);
         if (mev->buttons() & Qt::LeftButton) {
             const Layout layout = doLayout(option, index);
             if (handleMouseEvent(mev, layout.textRect, option, index)) {
                 return true;
             }
         }
     }
     return false;
 }
 
 QPoint BannerInfoListViewDelegate::adaptMousePosition(const QPoint &pos, QRect textRect, const QStyleOptionViewItem &option)
 {
     Q_UNUSED(option);
     const QPoint relativePos = pos - textRect.topLeft();
     return relativePos;
 }
 
 BannerInfoListViewDelegate::Layout BannerInfoListViewDelegate::doLayout(const QStyleOptionViewItem &option, const QModelIndex &index) const
 {
     Layout layout;
     // Message (using the rest of the available width)
     const int iconSize = option.widget->style()->pixelMetric(QStyle::PM_ButtonIconSize);
 
     const int senderX = option.rect.x();
     const int margin = MessageDelegateUtils::basicMargin();
     const int textLeft = senderX + margin;
     const int widthAfterMessage = iconSize + margin + margin / 2;
     const int maxWidth = qMax(30, option.rect.width() - textLeft - widthAfterMessage);
 
     layout.baseLine = 0;
     const QSize textSize = textSizeHint(index, maxWidth, option, &layout.baseLine);
 
     const int textVMargin = 3; // adjust this for "compactness"
     QRect usableRect = option.rect;
     layout.textRect = QRect(textLeft, usableRect.top() + textVMargin, maxWidth, textSize.height() + textVMargin);
     layout.baseLine += layout.textRect.top(); // make it absolute
     return layout;
 }
 
 QString BannerInfoListViewDelegate::cacheIdentifier(const QModelIndex &index) const
 {
     const QString identifier = index.data(BannerInfosModel::Identifier).toString();
     Q_ASSERT(!identifier.isEmpty());
     return identifier;
 }
 
 QTextDocument *BannerInfoListViewDelegate::documentForModelIndex(const QModelIndex &index, int width) const
 {
     Q_ASSERT(index.isValid());
     const QString messageId = cacheIdentifier(index);
     const QString messageBannerStr = index.data(BannerInfosModel::Text).toString();
     return documentForDelegate(mRocketChatAccount, messageId, messageBannerStr, width);
 }
 
 bool BannerInfoListViewDelegate::maybeStartDrag(QMouseEvent *event, const QStyleOptionViewItem &option, const QModelIndex &index)
 {
     const Layout layout = doLayout(option, index);
     if (MessageListDelegateBase::maybeStartDrag(event, layout.textRect, option, index)) {
         return true;
     }
     return false;
 }
 
 RocketChatAccount *BannerInfoListViewDelegate::rocketChatAccount(const QModelIndex &index) const
 {
     Q_UNUSED(index);
     return mRocketChatAccount;
 }
 
 #include "moc_bannerinfolistviewdelegate.cpp"