File indexing completed on 2024-05-26 05:05:51

 /*
    SPDX-FileCopyrightText: 2020-2024 Laurent Montel <montel@kde.org>
 
    SPDX-License-Identifier: LGPL-2.0-or-later
 */
 #include "listdiscussiondelegate.h"
 #include "config-ruqola.h"
 #if USE_SIZEHINT_CACHE_SUPPORT
 #include "ruqola_sizehint_cache_debug.h"
 #endif
 #include <KColorScheme>
 #include <KLocalizedString>
 #include <QAbstractItemView>
 #include <QPainter>
 #include <QToolTip>
 
 #include "colorsandmessageviewstyle.h"
 #include "common/delegatepaintutil.h"
 #include "delegateutils/messagedelegateutils.h"
 #include "delegateutils/textselectionimpl.h"
 #include "misc/avatarcachemanager.h"
 #include "model/discussionsmodel.h"
 #include "rocketchataccount.h"
 
 ListDiscussionDelegate::ListDiscussionDelegate(QListView *view, RocketChatAccount *account, QObject *parent)
     : MessageListDelegateBase(view, parent)
     , mRocketChatAccount(account)
     , mAvatarCacheManager(new AvatarCacheManager(Utils::AvatarType::User, this))
 {
     mAvatarCacheManager->setCurrentRocketChatAccount(mRocketChatAccount);
 }
 
 ListDiscussionDelegate::~ListDiscussionDelegate() = default;
 
 // [date]
 // text
 // number of discussion + last date
 // add text for opening dicussion.
 void ListDiscussionDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
 {
     painter->save();
 
     const Layout layout = doLayout(option, index);
 
     // Draw the pixmap
     if (!layout.avatarPixmap.isNull()) {
 #if USE_ROUNDED_RECT_PIXMAP
         DelegatePaintUtil::createClipRoundedRectangle(painter, QRectF(layout.avatarPos, layout.avatarPixmap.size()), layout.avatarPos, layout.avatarPixmap);
 #else
         painter->drawPixmap(layout.avatarPos, layout.avatarPixmap);
 #endif
     }
 
     // Draw the sender
     const QFont oldFont = painter->font();
     painter->setFont(layout.senderFont);
     painter->drawText(layout.senderRect.x(), layout.baseLine, layout.senderText);
     painter->setFont(oldFont);
 
     // 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);
         }
     }
 
     // Draw the number of message + timestamp (below the sender)
     const QString messageStr = i18np("%1 message", "%1 messages", layout.numberOfMessages) + QLatin1Char(' ') + layout.lastMessageTimeText;
     DelegatePaintUtil::drawLighterText(painter, messageStr, QPoint(layout.textRect.left(), layout.lastMessageTimeY + painter->fontMetrics().ascent()));
 
     const QString discussionsText = i18n("Open Discussion");
     painter->setPen(ColorsAndMessageViewStyle::self().schemeView().foreground(KColorScheme::LinkText).color());
     painter->drawText(layout.textRect.x(), layout.openDiscussionTextY + painter->fontMetrics().ascent(), discussionsText);
 
     // debug
     // painter->drawRect(option.rect.adjusted(0, 0, -1, -1));
     painter->restore();
 }
 
 QSize ListDiscussionDelegate::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) << "ListDiscussionDelegate: 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.openDiscussionTextY + layout.textRect.height() - option.rect.y();
     const int senderAndAvatarHeight = qMax<int>(layout.senderRect.y() + layout.senderRect.height() - option.rect.y(),
                                                 layout.avatarPos.y() + MessageDelegateUtils::dprAwareSize(layout.avatarPixmap).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(), qMax(senderAndAvatarHeight, contentsHeight) + additionalHeight};
 #if USE_SIZEHINT_CACHE_SUPPORT
     if (!size.isEmpty()) {
         mSizeHintCache.insert(identifier, size);
     }
 #endif
     return size;
 }
 
 bool ListDiscussionDelegate::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 ListDiscussionDelegate::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);
 
         const QRect discussionRect(layout.textRect.x(), layout.openDiscussionTextY, layout.textRect.width(), layout.openDiscussionTextHeight);
         if (discussionRect.contains(mev->pos())) {
             const QString discussionRoomId = index.data(DiscussionsModel::DiscussionRoomId).toString();
             Q_EMIT openDiscussion(discussionRoomId);
             return true;
         }
         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 ListDiscussionDelegate::adaptMousePosition(const QPoint &pos, QRect textRect, const QStyleOptionViewItem &option)
 {
     Q_UNUSED(option);
     const QPoint relativePos = pos - textRect.topLeft();
     return relativePos;
 }
 
 QPixmap ListDiscussionDelegate::makeAvatarPixmap(const QWidget *widget, const QModelIndex &index, int maxHeight) const
 {
     Utils::AvatarInfo info;
     info.avatarType = Utils::AvatarType::User;
     info.identifier = index.data(DiscussionsModel::UserName).toString();
 
     return mAvatarCacheManager->makeAvatarPixmap(widget, info, maxHeight);
 }
 
 ListDiscussionDelegate::Layout ListDiscussionDelegate::doLayout(const QStyleOptionViewItem &option, const QModelIndex &index) const
 {
     Layout layout;
     const QString userName = index.data(DiscussionsModel::UserName).toString();
     const int margin = MessageDelegateUtils::basicMargin();
     layout.senderText = QLatin1Char('@') + userName;
     layout.senderFont = option.font;
     layout.senderFont.setBold(true);
 
     // Message (using the rest of the available width)
     const int iconSize = option.widget->style()->pixelMetric(QStyle::PM_ButtonIconSize);
     const QFontMetricsF senderFontMetrics(layout.senderFont);
     const qreal senderAscent = senderFontMetrics.ascent();
     const QSizeF senderTextSize = senderFontMetrics.size(Qt::TextSingleLine, layout.senderText);
 
     const QPixmap pix = makeAvatarPixmap(option.widget, index, senderTextSize.height());
     if (!pix.isNull()) {
         const QPixmap scaledPixmap = pix.scaled(senderTextSize.height(), senderTextSize.height(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
         layout.avatarPixmap = scaledPixmap;
     }
 
     const int senderX = option.rect.x() + MessageDelegateUtils::dprAwareSize(layout.avatarPixmap).width() + 2 * margin;
 
     const int textLeft = senderX + senderTextSize.width() + 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
 
     layout.senderRect = QRectF(senderX, layout.baseLine - senderAscent, senderTextSize.width(), senderTextSize.height());
     // Align top of avatar with top of sender rect
     layout.avatarPos = QPointF(option.rect.x() + margin, layout.senderRect.y());
 
     layout.lastMessageTimeText = index.data(DiscussionsModel::LastMessage).toString();
     layout.lastMessageTimeY = layout.textRect.bottom();
 
     layout.numberOfMessages = index.data(DiscussionsModel::NumberOfMessages).toInt();
 
     layout.openDiscussionTextY = layout.lastMessageTimeY + option.fontMetrics.height();
     layout.openDiscussionTextHeight = option.fontMetrics.height();
 
     return layout;
 }
 
 QString ListDiscussionDelegate::cacheIdentifier(const QModelIndex &index) const
 {
     const QString discussionRoomId = index.data(DiscussionsModel::DiscussionRoomId).toString();
     Q_ASSERT(!discussionRoomId.isEmpty());
     return discussionRoomId;
 }
 
 QTextDocument *ListDiscussionDelegate::documentForModelIndex(const QModelIndex &index, int width) const
 {
     Q_ASSERT(index.isValid());
     const QString messageId = cacheIdentifier(index);
     const QString messageStr = index.data(DiscussionsModel::Description).toString();
     return documentForDelegate(mRocketChatAccount, messageId, messageStr, width);
 }
 
 bool ListDiscussionDelegate::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 *ListDiscussionDelegate::rocketChatAccount(const QModelIndex &index) const
 {
     Q_UNUSED(index);
     return mRocketChatAccount;
 }
 
 #include "moc_listdiscussiondelegate.cpp"