X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fqtui%2Fchatscene.cpp;h=dc0abf1013aeeefc4e9e5e52687f4ccd9a577018;hp=03c0e5f9b68bab103dffc347824b209b161ae8e2;hb=7f0bcdbfaa2f435baad9b833441aca86517cb84c;hpb=2749b14904e18f1de05be66ccc1ebdadd57e838f diff --git a/src/qtui/chatscene.cpp b/src/qtui/chatscene.cpp index 03c0e5f9..dc0abf10 100644 --- a/src/qtui/chatscene.cpp +++ b/src/qtui/chatscene.cpp @@ -1,5 +1,5 @@ /*************************************************************************** - * Copyright (C) 2005-08 by the Quassel Project * + * Copyright (C) 2005-2013 by the Quassel Project * * devel@quassel-irc.org * * * * This program is free software; you can redistribute it and/or modify * @@ -15,416 +15,1253 @@ * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the * * Free Software Foundation, Inc., * - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * ***************************************************************************/ #include #include +#include #include +#include +#include +#include #include +#ifdef HAVE_KDE +# include +#else +# include +#endif + +#ifdef HAVE_WEBKIT +# include +#endif + #include "chatitem.h" #include "chatline.h" #include "chatlinemodelitem.h" #include "chatscene.h" +#include "chatview.h" #include "client.h" #include "clientbacklogmanager.h" #include "columnhandleitem.h" +#include "contextmenuactionprovider.h" +#include "iconloader.h" +#include "mainwin.h" +#include "markerlineitem.h" #include "messagefilter.h" #include "qtui.h" -#include "qtuisettings.h" +#include "qtuistyle.h" +#include "chatviewsettings.h" +#include "webpreviewitem.h" const qreal minContentsWidth = 200; -ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, QObject *parent) - : QGraphicsScene(0, 0, width, 0, parent), +ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, ChatView *parent) + : QGraphicsScene(0, 0, width, 0, (QObject *)parent), + _chatView(parent), _idString(idString), _model(model), - _singleBufferScene(false), + _singleBufferId(BufferId()), + _sceneRect(0, 0, width, 0), + _firstLineRow(-1), + _viewportHeight(0), + _markerLine(new MarkerLineItem(width)), + _markerLineVisible(false), + _markerLineValid(false), + _markerLineJumpPending(false), + _cutoffMode(CutoffRight), _selectingItem(0), _selectionStart(-1), _isSelecting(false), - _lastBacklogSize(0) -{ - MessageFilter *filter = qobject_cast(model); - if(filter) { - _singleBufferScene = filter->isSingleBufferFilter(); - } - - QtUiSettings s; - int defaultFirstColHandlePos = s.value("ChatView/DefaultFirstColumnHandlePos", 80).toInt(); - int defaultSecondColHandlePos = s.value("ChatView/DefaultSecondColumnHandlePos", 200).toInt(); - - firstColHandlePos = s.value(QString("ChatView/%1/FirstColumnHandlePos").arg(_idString), - defaultFirstColHandlePos).toInt(); - secondColHandlePos = s.value(QString("ChatView/%1/SecondColumnHandlePos").arg(_idString), - defaultSecondColHandlePos).toInt(); - - firstColHandle = new ColumnHandleItem(QtUi::style()->firstColumnSeparator()); - addItem(firstColHandle); - firstColHandle->setXPos(firstColHandlePos); - connect(firstColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal))); - connect(this, SIGNAL(sceneRectChanged(const QRectF &)), firstColHandle, SLOT(sceneRectChanged(const QRectF &))); - - secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator()); - addItem(secondColHandle); - secondColHandle->setXPos(secondColHandlePos); - connect(secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal))); - connect(this, SIGNAL(sceneRectChanged(const QRectF &)), secondColHandle, SLOT(sceneRectChanged(const QRectF &))); - - setHandleXLimits(); - - connect(model, SIGNAL(rowsInserted(const QModelIndex &, int, int)), - this, SLOT(rowsInserted(const QModelIndex &, int, int))); - connect(model, SIGNAL(rowsAboutToBeRemoved(const QModelIndex &, int, int)), - this, SLOT(rowsAboutToBeRemoved(const QModelIndex &, int, int))); - - if(model->rowCount() > 0) - rowsInserted(QModelIndex(), 0, model->rowCount() - 1); -} - -ChatScene::~ChatScene() { -} - -void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) { - Q_UNUSED(index); - qreal h = 0; - qreal y = sceneRect().y(); - qreal width = sceneRect().width(); - bool atTop = true; - bool atBottom = false; - bool moveTop = false; - bool hasWidth = (width != 0); - - if(start > 0) { - y = _lines.value(start - 1)->y() + _lines.value(start - 1)->height(); - atTop = false; - } - if(start == _lines.count()) - atBottom = true; - - for(int i = end; i >= start; i--) { - ChatLine *line = new ChatLine(i, model()); - _lines.insert(start, line); - addItem(line); - if(hasWidth) { - if(atTop) { - h -= line->setGeometry(width); - line->setPos(0, y+h); - } else { - line->setPos(0, y+h); - h += line->setGeometry(width); - } - } - } - - // update existing items - for(int i = end+1; i < _lines.count(); i++) { - _lines[i]->setRow(i); - } - - // update selection - if(_selectionStart >= 0) { - int offset = end - start + 1; - if(_selectionStart >= start) _selectionStart += offset; - if(_selectionEnd >= start) _selectionEnd += offset; - if(_firstSelectionRow >= start) _firstSelectionRow += offset; - if(_lastSelectionRow >= start) _lastSelectionRow += offset; - } - - // neither pre- or append means we have to do dirty work: move items... - if(!(atTop || atBottom)) { - qreal offset = h; - int moveStart = 0; - int moveEnd = _lines.count() - 1; - ChatLine *line = 0; - if(end > _lines.count() - end) { - // move top part - moveTop = true; - offset = -offset; - moveEnd = end; - } else { - // move bottom part - moveStart = start; - } - for(int i = moveStart; i <= moveEnd; i++) { - line = _lines.at(i); - line->setPos(0, line->pos().y() + offset); - } - } - - // update sceneRect - if(atTop || moveTop) { - setSceneRect(sceneRect().adjusted(0, h, 0, 0)); - } else { - setSceneRect(sceneRect().adjusted(0, 0, 0, h)); - emit sceneHeightChanged(h); - } - -} - -void ChatScene::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) { - Q_UNUSED(parent); - - qreal h = 0; // total height of removed items; - - bool atTop = (start == 0); - bool atBottom = (end == _lines.count() - 1); - bool moveTop = false; - - // remove items from scene - QList::iterator lineIter = _lines.begin() + start; - int lineCount = start; - while(lineIter != _lines.end() && lineCount <= end) { - h += (*lineIter)->height(); - delete *lineIter; - lineIter = _lines.erase(lineIter); - lineCount++; - } - - // update rows of remaining chatlines - for(int i = start; i < _lines.count(); i++) { - _lines.at(i)->setRow(i); - } - - // update selection - if(_selectionStart >= 0) { - int offset = end - start + 1; - if(_selectionStart >= start) - _selectionStart -= offset; - if(_selectionEnd >= start) - _selectionEnd -= offset; - if(_firstSelectionRow >= start) - _firstSelectionRow -= offset; - if(_lastSelectionRow >= start) - _lastSelectionRow -= offset; - } - - // neither removing at bottom or top means we have to move items... - if(!(atTop || atBottom)) { - qreal offset = h; - int moveStart = 0; - int moveEnd = _lines.count() - 1; - ChatLine *line = 0; - if(start > _lines.count() - end) { - // move top part - moveTop = true; - moveEnd = start - 1; - } else { - // move bottom part - moveStart = start; - offset = -offset; - } - for(int i = moveStart; i <= moveEnd; i++) { - line = _lines.at(i); - line->setPos(0, line->pos().y() + offset); - } - } - - // update sceneRect - if(atTop || moveTop) { - setSceneRect(sceneRect().adjusted(0, h, 0, 0)); - } else { - setSceneRect(sceneRect().adjusted(0, 0, 0, -h)); - } - -} - -void ChatScene::setWidth(qreal width, bool forceReposition) { - if(width == sceneRect().width() && !forceReposition) - return; + _clickMode(NoClick), + _clickHandled(true), + _leftButtonPressed(false) +{ + MessageFilter *filter = qobject_cast(model); + if (filter && filter->isSingleBufferFilter()) { + _singleBufferId = filter->singleBufferId(); + } + + addItem(_markerLine); + connect(this, SIGNAL(sceneRectChanged(const QRectF &)), _markerLine, SLOT(sceneRectChanged(const QRectF &))); + + ChatViewSettings defaultSettings; + int defaultFirstColHandlePos = defaultSettings.value("FirstColumnHandlePos", 80).toInt(); + int defaultSecondColHandlePos = defaultSettings.value("SecondColumnHandlePos", 200).toInt(); + + ChatViewSettings viewSettings(this); + _firstColHandlePos = viewSettings.value("FirstColumnHandlePos", defaultFirstColHandlePos).toInt(); + _secondColHandlePos = viewSettings.value("SecondColumnHandlePos", defaultSecondColHandlePos).toInt(); + + _firstColHandle = new ColumnHandleItem(QtUi::style()->firstColumnSeparator()); + addItem(_firstColHandle); + _firstColHandle->setXPos(_firstColHandlePos); + connect(_firstColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(firstHandlePositionChanged(qreal))); + connect(this, SIGNAL(sceneRectChanged(const QRectF &)), _firstColHandle, SLOT(sceneRectChanged(const QRectF &))); + + _secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator()); + addItem(_secondColHandle); + _secondColHandle->setXPos(_secondColHandlePos); + connect(_secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(secondHandlePositionChanged(qreal))); + + connect(this, SIGNAL(sceneRectChanged(const QRectF &)), _secondColHandle, SLOT(sceneRectChanged(const QRectF &))); + + setHandleXLimits(); + + if (model->rowCount() > 0) + rowsInserted(QModelIndex(), 0, model->rowCount() - 1); + + connect(model, SIGNAL(rowsInserted(const QModelIndex &, int, int)), + this, SLOT(rowsInserted(const QModelIndex &, int, int))); + connect(model, SIGNAL(rowsAboutToBeRemoved(const QModelIndex &, int, int)), + this, SLOT(rowsAboutToBeRemoved(const QModelIndex &, int, int))); + connect(model, SIGNAL(rowsRemoved(QModelIndex, int, int)), + this, SLOT(rowsRemoved())); + connect(model, SIGNAL(dataChanged(QModelIndex, QModelIndex)), SLOT(dataChanged(QModelIndex, QModelIndex))); + +#ifdef HAVE_WEBKIT + webPreview.timer.setSingleShot(true); + connect(&webPreview.timer, SIGNAL(timeout()), this, SLOT(webPreviewNextStep())); +#endif + _showWebPreview = defaultSettings.showWebPreview(); + defaultSettings.notify("ShowWebPreview", this, SLOT(showWebPreviewChanged())); + + _clickTimer.setInterval(QApplication::doubleClickInterval()); + _clickTimer.setSingleShot(true); + connect(&_clickTimer, SIGNAL(timeout()), SLOT(clickTimeout())); + + setItemIndexMethod(QGraphicsScene::NoIndex); +} + + +ChatScene::~ChatScene() +{ +} + + +ChatView *ChatScene::chatView() const +{ + return _chatView; +} + + +ColumnHandleItem *ChatScene::firstColumnHandle() const +{ + return _firstColHandle; +} + + +ColumnHandleItem *ChatScene::secondColumnHandle() const +{ + return _secondColHandle; +} + + +ChatLine *ChatScene::chatLine(MsgId msgId, bool matchExact, bool ignoreDayChange) const +{ + if (!_lines.count()) + return 0; + + QList::ConstIterator start = _lines.begin(); + QList::ConstIterator end = _lines.end(); + QList::ConstIterator middle; + + int n = int(end - start); + int half; + + while (n > 0) { + half = n >> 1; + middle = start + half; + if ((*middle)->msgId() < msgId) { + start = middle + 1; + n -= half + 1; + } + else { + n = half; + } + } + + if (start != end && (*start)->msgId() == msgId && (ignoreDayChange ? (*start)->msgType() != Message::DayChange : true)) + return *start; + + if (matchExact) + return 0; + + if (start == _lines.begin()) // not (yet?) in our scene + return 0; + + // if we didn't find the exact msgId, take the next-lower one (this makes sense for lastSeen) + + if (start == end) { // higher than last element + if (!ignoreDayChange) + return _lines.last(); + + for (int i = _lines.count() -1; i >= 0; i--) { + if (_lines.at(i)->msgType() != Message::DayChange) + return _lines.at(i); + } + return 0; + } + + // return the next-lower line + if (!ignoreDayChange) + return *(--start); + + do { + if ((*(--start))->msgType() != Message::DayChange) + return *start; + } + while (start != _lines.begin()); + return 0; +} + + +ChatItem *ChatScene::chatItemAt(const QPointF &scenePos) const +{ + foreach(QGraphicsItem *item, items(scenePos, Qt::IntersectsItemBoundingRect, Qt::AscendingOrder)) { + ChatLine *line = qgraphicsitem_cast(item); + if (line) + return line->itemAt(line->mapFromScene(scenePos)); + } + return 0; +} + + +bool ChatScene::containsBuffer(const BufferId &id) const +{ + MessageFilter *filter = qobject_cast(model()); + if (filter) + return filter->containsBuffer(id); + else + return false; +} + + +void ChatScene::setMarkerLineVisible(bool visible) +{ + _markerLineVisible = visible; + if (visible && _markerLineValid) + markerLine()->setVisible(true); + else + markerLine()->setVisible(false); +} + + +void ChatScene::setMarkerLine(MsgId msgId) +{ + if (!isSingleBufferScene()) + return; + + if (!msgId.isValid()) + msgId = Client::markerLine(singleBufferId()); + + if (msgId.isValid()) { + ChatLine *line = chatLine(msgId, false, true); + if (line) { + markerLine()->setChatLine(line); + // if this was the last line, we won't see it because it's outside the sceneRect + // .. which is exactly what we want :) + markerLine()->setPos(line->pos() + QPointF(0, line->height())); + + // DayChange messages might have been hidden outside the scene rect, don't make the markerline visible then! + if (markerLine()->pos().y() >= sceneRect().y()) { + _markerLineValid = true; + if (_markerLineVisible) + markerLine()->setVisible(true); + if (_markerLineJumpPending) { + _markerLineJumpPending = false; + if (markerLine()->isVisible()) { + markerLine()->ensureVisible(QRectF(), 50, 50); + } + } + return; + } + } + } + _markerLineValid = false; + markerLine()->setVisible(false); +} + + +void ChatScene::jumpToMarkerLine(bool requestBacklog) +{ + if (!isSingleBufferScene()) + return; + + if (markerLine()->isVisible()) { + markerLine()->ensureVisible(QRectF(), 50, 50); + return; + } + if (!_markerLineValid && requestBacklog) { + MsgId msgId = Client::markerLine(singleBufferId()); + if (msgId.isValid()) { + _markerLineJumpPending = true; + Client::backlogManager()->requestBacklog(singleBufferId(), msgId, -1, -1, 0); + + // If we filtered out the lastSeenMsg (by changing filters after setting it), we'd never jump because the above request + // won't fetch any prior lines. Thus, trigger a dynamic backlog request just in case, so repeated + // jump tries will eventually cause enough backlog to be fetched. + // This is a bit hackish, but not wasteful, as jumping to the top of the ChatView would trigger a dynamic fetch anyway. + this->requestBacklog(); + } + } +} + + +void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) +{ + Q_UNUSED(index); + +// QModelIndex sidx = model()->index(start, 2); +// QModelIndex eidx = model()->index(end, 2); +// qDebug() << "rowsInserted:"; +// if(start > 0) { +// QModelIndex ssidx = model()->index(start - 1, 2); +// qDebug() << "Start--:" << start - 1 << ssidx.data(MessageModel::MsgIdRole).value() +// << ssidx.data(Qt::DisplayRole).toString(); +// } +// qDebug() << "Start:" << start << sidx.data(MessageModel::MsgIdRole).value() +// << sidx.data(Qt::DisplayRole).toString(); +// qDebug() << "End:" << end << eidx.data(MessageModel::MsgIdRole).value() +// << eidx.data(Qt::DisplayRole).toString(); +// if(end + 1 < model()->rowCount()) { +// QModelIndex eeidx = model()->index(end + 1, 2); +// qDebug() << "End++:" << end + 1 << eeidx.data(MessageModel::MsgIdRole).value() +// << eeidx.data(Qt::DisplayRole).toString(); +// } + + qreal h = 0; + qreal y = 0; + qreal width = _sceneRect.width(); + bool atBottom = (start == _lines.count()); + bool atTop = !atBottom && (start == 0); + + if (start < _lines.count()) { + y = _lines.value(start)->y(); + } + else if (atBottom && !_lines.isEmpty()) { + y = _lines.last()->y() + _lines.last()->height(); + } + + qreal contentsWidth = width - secondColumnHandle()->sceneRight(); + qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight(); + qreal timestampWidth = firstColumnHandle()->sceneLeft(); + QPointF contentsPos(secondColumnHandle()->sceneRight(), 0); + QPointF senderPos(firstColumnHandle()->sceneRight(), 0); + + if (atTop) { + for (int i = end; i >= start; i--) { + ChatLine *line = new ChatLine(i, model(), + width, + timestampWidth, senderWidth, contentsWidth, + senderPos, contentsPos); + h += line->height(); + line->setPos(0, y-h); + _lines.insert(start, line); + addItem(line); + } + } + else { + for (int i = start; i <= end; i++) { + ChatLine *line = new ChatLine(i, model(), + width, + timestampWidth, senderWidth, contentsWidth, + senderPos, contentsPos); + line->setPos(0, y+h); + h += line->height(); + _lines.insert(i, line); + addItem(line); + } + } + + // update existing items + for (int i = end+1; i < _lines.count(); i++) { + _lines[i]->setRow(i); + } + + // update selection + if (_selectionStart >= 0) { + int offset = end - start + 1; + int oldStart = _selectionStart; + if (_selectionStart >= start) + _selectionStart += offset; + if (_selectionEnd >= start) { + _selectionEnd += offset; + if (_selectionStart == oldStart) + for (int i = start; i < start + offset; i++) + _lines[i]->setSelected(true); + } + if (_firstSelectionRow >= start) + _firstSelectionRow += offset; + } + + // neither pre- or append means we have to do dirty work: move items... + if (!(atTop || atBottom)) { + ChatLine *line = 0; + for (int i = 0; i <= end; i++) { + line = _lines.at(i); + line->setPos(0, line->pos().y() - h); + if (line == markerLine()->chatLine()) + markerLine()->setPos(line->pos() + QPointF(0, line->height())); + } + } + + // check if all went right + Q_ASSERT(start == 0 || _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() == _lines.at(start)->pos().y()); +// if(start != 0) { +// if(_lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() != _lines.at(start)->pos().y()) { +// qDebug() << "lines:" << _lines.count() << "start:" << start << "end:" << end; +// qDebug() << "line[start - 1]:" << _lines.at(start - 1)->pos().y() << "+" << _lines.at(start - 1)->height() << "=" << _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height(); +// qDebug() << "line[start]" << _lines.at(start)->pos().y(); +// qDebug() << "needed moving:" << !(atTop || atBottom) << moveTop << moveStart << moveEnd << offset; +// Q_ASSERT(false) +// } +// } + Q_ASSERT(end + 1 == _lines.count() || _lines.at(end)->pos().y() + _lines.at(end)->height() == _lines.at(end + 1)->pos().y()); +// if(end + 1 < _lines.count()) { +// if(_lines.at(end)->pos().y() + _lines.at(end)->height() != _lines.at(end + 1)->pos().y()) { +// qDebug() << "lines:" << _lines.count() << "start:" << start << "end:" << end; +// qDebug() << "line[end]:" << _lines.at(end)->pos().y() << "+" << _lines.at(end)->height() << "=" << _lines.at(end)->pos().y() + _lines.at(end)->height(); +// qDebug() << "line[end+1]" << _lines.at(end + 1)->pos().y(); +// qDebug() << "needed moving:" << !(atTop || atBottom) << moveTop << moveStart << moveEnd << offset; +// Q_ASSERT(false); +// } +// } + + if (!atBottom) { + if (start < _firstLineRow) { + int prevFirstLineRow = _firstLineRow + (end - start + 1); + for (int i = end + 1; i < prevFirstLineRow; i++) { + _lines.at(i)->show(); + } + } + // force new search for first proper line + _firstLineRow = -1; + } + updateSceneRect(); + if (atBottom) { + emit lastLineChanged(_lines.last(), h); + } + + // now move the marker line if necessary. we don't need to do anything if we appended lines though... + if (!_markerLineValid) + setMarkerLine(); +} + + +void ChatScene::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) +{ + Q_UNUSED(parent); + + qreal h = 0; // total height of removed items; + + bool atTop = (start == 0); + bool atBottom = (end == _lines.count() - 1); + + // clear selection + if (_selectingItem) { + int row = _selectingItem->row(); + if (row >= start && row <= end) + setSelectingItem(0); + } + + // remove items from scene + QList::iterator lineIter = _lines.begin() + start; + int lineCount = start; + while (lineIter != _lines.end() && lineCount <= end) { + if ((*lineIter) == markerLine()->chatLine()) + markerLine()->setChatLine(0); + h += (*lineIter)->height(); + delete *lineIter; + lineIter = _lines.erase(lineIter); + lineCount++; + } + + // update rows of remaining chatlines + for (int i = start; i < _lines.count(); i++) { + _lines.at(i)->setRow(i); + } + + // update selection + if (_selectionStart >= 0) { + int offset = end - start + 1; + if (_selectionStart >= start) + _selectionStart = qMax(_selectionStart - offset, start); + if (_selectionEnd >= start) + _selectionEnd -= offset; + if (_firstSelectionRow >= start) + _firstSelectionRow -= offset; + + if (_selectionEnd < _selectionStart) { + _isSelecting = false; + _selectionStart = -1; + } + } + + // neither removing at bottom or top means we have to move items... + if (!(atTop || atBottom)) { + qreal offset = h; + int moveStart = 0; + int moveEnd = _lines.count() - 1; + if (start < _lines.count() - start) { + // move top part + moveEnd = start - 1; + } + else { + // move bottom part + moveStart = start; + offset = -offset; + } + ChatLine *line = 0; + for (int i = moveStart; i <= moveEnd; i++) { + line = _lines.at(i); + line->setPos(0, line->pos().y() + offset); + } + } + + Q_ASSERT(start == 0 || start >= _lines.count() || _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() == _lines.at(start)->pos().y()); + + // update sceneRect + // when searching for the first non-date-line we have to take into account that our + // model still contains the just removed lines so we cannot simply call updateSceneRect() + int numRows = model()->rowCount(); + QModelIndex firstLineIdx; + _firstLineRow = -1; + bool needOffset = false; + do { + _firstLineRow++; + if (_firstLineRow >= start && _firstLineRow <= end) { + _firstLineRow = end + 1; + needOffset = true; + } + firstLineIdx = model()->index(_firstLineRow, 0); + } + while ((Message::Type)(model()->data(firstLineIdx, MessageModel::TypeRole).toInt()) == Message::DayChange && _firstLineRow < numRows); + + if (needOffset) + _firstLineRow -= end - start + 1; + updateSceneRect(); +} + + +void ChatScene::rowsRemoved() +{ + // move the marker line if necessary + setMarkerLine(); +} + + +void ChatScene::dataChanged(const QModelIndex &tl, const QModelIndex &br) +{ + layout(tl.row(), br.row(), _sceneRect.width()); +} + + +void ChatScene::updateForViewport(qreal width, qreal height) +{ + _viewportHeight = height; + setWidth(width); +} + + +void ChatScene::setWidth(qreal width) +{ + if (width == _sceneRect.width()) + return; + layout(0, _lines.count()-1, width); +} + + +void ChatScene::layout(int start, int end, qreal width) +{ + // clock_t startT = clock(); + + // disabling the index while doing this complex updates is about + // 2 to 10 times faster! + //setItemIndexMethod(QGraphicsScene::NoIndex); + + if (end >= 0) { + int row = end; + qreal linePos = _lines.at(row)->scenePos().y() + _lines.at(row)->height(); + qreal contentsWidth = width - secondColumnHandle()->sceneRight(); + while (row >= start) { + _lines.at(row--)->setGeometryByWidth(width, contentsWidth, linePos); + } + + if (row >= 0) { + // remaining items don't need geometry changes, but maybe repositioning? + ChatLine *line = _lines.at(row); + qreal offset = linePos - (line->scenePos().y() + line->height()); + if (offset != 0) { + while (row >= 0) { + line = _lines.at(row--); + line->setPos(0, line->scenePos().y() + offset); + } + } + } + } + + //setItemIndexMethod(QGraphicsScene::BspTreeIndex); + + updateSceneRect(width); + setHandleXLimits(); + setMarkerLine(); + emit layoutChanged(); + +// clock_t endT = clock(); +// qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec"; +} + + +void ChatScene::firstHandlePositionChanged(qreal xpos) +{ + if (_firstColHandlePos == xpos) + return; + + _firstColHandlePos = xpos >= 0 ? xpos : 0; + ChatViewSettings viewSettings(this); + viewSettings.setValue("FirstColumnHandlePos", _firstColHandlePos); + ChatViewSettings defaultSettings; + defaultSettings.setValue("FirstColumnHandlePos", _firstColHandlePos); + + // clock_t startT = clock(); + + // disabling the index while doing this complex updates is about + // 2 to 10 times faster! + //setItemIndexMethod(QGraphicsScene::NoIndex); + + QList::iterator lineIter = _lines.end(); + QList::iterator lineIterBegin = _lines.begin(); + qreal timestampWidth = firstColumnHandle()->sceneLeft(); + qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight(); + QPointF senderPos(firstColumnHandle()->sceneRight(), 0); + + while (lineIter != lineIterBegin) { + lineIter--; + (*lineIter)->setFirstColumn(timestampWidth, senderWidth, senderPos); + } + //setItemIndexMethod(QGraphicsScene::BspTreeIndex); + + setHandleXLimits(); + +// clock_t endT = clock(); +// qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec"; +} + + +void ChatScene::secondHandlePositionChanged(qreal xpos) +{ + if (_secondColHandlePos == xpos) + return; + + _secondColHandlePos = xpos; + ChatViewSettings viewSettings(this); + viewSettings.setValue("SecondColumnHandlePos", _secondColHandlePos); + ChatViewSettings defaultSettings; + defaultSettings.setValue("SecondColumnHandlePos", _secondColHandlePos); + + // clock_t startT = clock(); + + // disabling the index while doing this complex updates is about + // 2 to 10 times faster! + //setItemIndexMethod(QGraphicsScene::NoIndex); + + QList::iterator lineIter = _lines.end(); + QList::iterator lineIterBegin = _lines.begin(); + qreal linePos = _sceneRect.y() + _sceneRect.height(); + qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight(); + qreal contentsWidth = _sceneRect.width() - secondColumnHandle()->sceneRight(); + QPointF contentsPos(secondColumnHandle()->sceneRight(), 0); + while (lineIter != lineIterBegin) { + lineIter--; + (*lineIter)->setSecondColumn(senderWidth, contentsWidth, contentsPos, linePos); + } + //setItemIndexMethod(QGraphicsScene::BspTreeIndex); + + updateSceneRect(); + setHandleXLimits(); + emit layoutChanged(); - qreal oldHeight = sceneRect().height(); - qreal y = sceneRect().y(); - qreal linePos = y; - - foreach(ChatLine *line, _lines) { - line->setPos(0, linePos); - linePos += line->setGeometry(width); - } - - qreal height = linePos - y; - - setSceneRect(QRectF(0, y, width, height)); - setHandleXLimits(); - - qreal dh = height - oldHeight; - if(dh > 0) - emit sceneHeightChanged(dh); -} - -void ChatScene::handlePositionChanged(qreal xpos) { - bool first = (sender() == firstColHandle); - qreal oldx; - if(first) { - oldx = firstColHandlePos; - firstColHandlePos = xpos; - } else { - oldx = secondColHandlePos; - secondColHandlePos = xpos; - } - QtUiSettings s; - s.setValue(QString("ChatView/%1/FirstColumnHandlePos").arg(_idString), firstColHandlePos); - s.setValue(QString("ChatView/%1/SecondColumnHandlePos").arg(_idString), secondColHandlePos); - s.setValue(QString("ChatView/DefaultFirstColumnHandlePos"), firstColHandlePos); - s.setValue(QString("ChatView/DefaultSecondColumnHandlePos"), secondColHandlePos); - - setWidth(width(), true); // readjust all chatlines - // we get ugly redraw errors if we don't update this explicitly... :( - // width() should be the same for both handles, so just use firstColHandle regardless - //update(qMin(oldx, xpos), 0, qMax(oldx, xpos) + firstColHandle->width(), height()); -} - -void ChatScene::setHandleXLimits() { - firstColHandle->setXLimits(0, secondColumnHandleRect().left()); - secondColHandle->setXLimits(firstColumnHandleRect().right(), width() - minContentsWidth); -} - -void ChatScene::setSelectingItem(ChatItem *item) { - if(_selectingItem) _selectingItem->clearSelection(); - _selectingItem = item; -} - -void ChatScene::startGlobalSelection(ChatItem *item, const QPointF &itemPos) { - _selectionStart = _selectionEnd = _lastSelectionRow = _firstSelectionRow = item->row(); - _selectionStartCol = _selectionMinCol = item->column(); - _isSelecting = true; - _lines[_selectionStart]->setSelected(true, (ChatLineModel::ColumnType)_selectionMinCol); - updateSelection(item->mapToScene(itemPos)); -} - -void ChatScene::updateSelection(const QPointF &pos) { - // This is somewhat hacky... we look at the contents item that is at the cursor's y position (ignoring x), since - // it has the full height. From this item, we can then determine the row index and hence the ChatLine. - ChatItem *contentItem = static_cast(itemAt(QPointF(secondColumnHandleRect().right() + 1, pos.y()))); - if(!contentItem) return; - - int curRow = contentItem->row(); - int curColumn; - if(pos.x() > secondColumnHandleRect().right()) curColumn = ChatLineModel::ContentsColumn; - else if(pos.x() > firstColHandlePos) curColumn = ChatLineModel::SenderColumn; - else curColumn = ChatLineModel::TimestampColumn; - - ChatLineModel::ColumnType minColumn = (ChatLineModel::ColumnType)qMin(curColumn, _selectionStartCol); - if(minColumn != _selectionMinCol) { - _selectionMinCol = minColumn; - for(int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++) { - _lines[l]->setSelected(true, minColumn); - } - } - int newstart = qMin(curRow, _firstSelectionRow); - int newend = qMax(curRow, _firstSelectionRow); - if(newstart < _selectionStart) { - for(int l = newstart; l < _selectionStart; l++) - _lines[l]->setSelected(true, minColumn); - } - if(newstart > _selectionStart) { - for(int l = _selectionStart; l < newstart; l++) - _lines[l]->setSelected(false); - } - if(newend > _selectionEnd) { - for(int l = _selectionEnd+1; l <= newend; l++) - _lines[l]->setSelected(true, minColumn); - } - if(newend < _selectionEnd) { - for(int l = newend+1; l <= _selectionEnd; l++) - _lines[l]->setSelected(false); - } - - _selectionStart = newstart; - _selectionEnd = newend; - _lastSelectionRow = curRow; - - if(newstart == newend && minColumn == ChatLineModel::ContentsColumn) { - if(!_selectingItem) { - qWarning() << "WARNING: ChatScene::updateSelection() has a null _selectingItem, this should never happen! Please report."; - return; - } - _lines[curRow]->setSelected(false); - _isSelecting = false; - _selectingItem->continueSelecting(_selectingItem->mapFromScene(pos)); - } -} - -void ChatScene::mouseMoveEvent(QGraphicsSceneMouseEvent *event) { - if(_isSelecting && event->buttons() == Qt::LeftButton) { - updateSelection(event->scenePos()); - event->accept(); - } else { - QGraphicsScene::mouseMoveEvent(event); - } -} - -void ChatScene::mousePressEvent(QGraphicsSceneMouseEvent *event) { - if(event->buttons() == Qt::LeftButton && _selectionStart >= 0) { - for(int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++) { - _lines[l]->setSelected(false); - } - _selectionStart = -1; - QGraphicsScene::mousePressEvent(event); // so we can start a new local selection - } else { - QGraphicsScene::mousePressEvent(event); - } -} - -void ChatScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) { - if(_isSelecting && !event->buttons() & Qt::LeftButton) { - putToClipboard(selectionToString()); - _isSelecting = false; - event->accept(); - } else { +// clock_t endT = clock(); +// qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec"; +} + + +void ChatScene::setHandleXLimits() +{ + _firstColHandle->setXLimits(0, _secondColHandle->sceneLeft()); + _secondColHandle->setXLimits(_firstColHandle->sceneRight(), width() - minContentsWidth); + update(); +} + + +void ChatScene::setSelectingItem(ChatItem *item) +{ + if (_selectingItem) _selectingItem->clearSelection(); + _selectingItem = item; +} + + +void ChatScene::startGlobalSelection(ChatItem *item, const QPointF &itemPos) +{ + _selectionStart = _selectionEnd = _firstSelectionRow = item->row(); + _selectionStartCol = _selectionMinCol = item->column(); + _isSelecting = true; + _lines[_selectionStart]->setSelected(true, (ChatLineModel::ColumnType)_selectionMinCol); + updateSelection(item->mapToScene(itemPos)); +} + + +void ChatScene::updateSelection(const QPointF &pos) +{ + int curRow = rowByScenePos(pos); + if (curRow < 0) return; + int curColumn = (int)columnByScenePos(pos); + ChatLineModel::ColumnType minColumn = (ChatLineModel::ColumnType)qMin(curColumn, _selectionStartCol); + if (minColumn != _selectionMinCol) { + _selectionMinCol = minColumn; + for (int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++) { + _lines[l]->setSelected(true, minColumn); + } + } + int newstart = qMin(curRow, _firstSelectionRow); + int newend = qMax(curRow, _firstSelectionRow); + if (newstart < _selectionStart) { + for (int l = newstart; l < _selectionStart; l++) + _lines[l]->setSelected(true, minColumn); + } + if (newstart > _selectionStart) { + for (int l = _selectionStart; l < newstart; l++) + _lines[l]->setSelected(false); + } + if (newend > _selectionEnd) { + for (int l = _selectionEnd+1; l <= newend; l++) + _lines[l]->setSelected(true, minColumn); + } + if (newend < _selectionEnd) { + for (int l = newend+1; l <= _selectionEnd; l++) + _lines[l]->setSelected(false); + } + + _selectionStart = newstart; + _selectionEnd = newend; + + if (newstart == newend && minColumn == ChatLineModel::ContentsColumn) { + if (!_selectingItem) { + // _selectingItem has been removed already + return; + } + _lines[curRow]->setSelected(false); + _isSelecting = false; + _selectionStart = -1; + _selectingItem->continueSelecting(_selectingItem->mapFromScene(pos)); + } +} + + +bool ChatScene::isPosOverSelection(const QPointF &pos) const +{ + ChatItem *chatItem = chatItemAt(pos); + if (!chatItem) + return false; + if (hasGlobalSelection()) { + int row = chatItem->row(); + if (row >= qMin(_selectionStart, _selectionEnd) && row <= qMax(_selectionStart, _selectionEnd)) + return columnByScenePos(pos) >= _selectionMinCol; + } + else { + return chatItem->isPosOverSelection(chatItem->mapFromScene(pos)); + } + return false; +} + + +bool ChatScene::isScrollingAllowed() const +{ + if (_isSelecting) + return false; + + // TODO: Handle clicks and single-item selections too + + return true; +} + + +/******** MOUSE HANDLING **************************************************************************/ + +void ChatScene::contextMenuEvent(QGraphicsSceneContextMenuEvent *event) +{ + QPointF pos = event->scenePos(); + QMenu menu; + + // zoom actions and similar + chatView()->addActionsToMenu(&menu, pos); + menu.addSeparator(); + + // item-specific options (select link etc) + ChatItem *item = chatItemAt(pos); + if (item) + item->addActionsToMenu(&menu, item->mapFromScene(pos)); + else + // no item -> default scene actions + GraphicalUi::contextMenuActionProvider()->addActions(&menu, filter(), BufferId()); + + // If we have text selected, insert the Copy Selection as first item + if (isPosOverSelection(pos)) { + QAction *act = new Action(SmallIcon("edit-copy"), tr("Copy Selection"), &menu, this, + SLOT(selectionToClipboard()), QKeySequence::Copy); + menu.insertAction(menu.actions().at(0), act); + } + + if (QtUi::mainWindow()->menuBar()->isHidden()) + menu.addAction(QtUi::actionCollection("General")->action("ToggleMenuBar")); + + menu.exec(event->screenPos()); +} + + +void ChatScene::mouseMoveEvent(QGraphicsSceneMouseEvent *event) +{ + if (event->buttons() == Qt::LeftButton) { + if (!_clickHandled && (event->scenePos() - _clickPos).toPoint().manhattanLength() >= QApplication::startDragDistance()) { + if (_clickTimer.isActive()) + _clickTimer.stop(); + if (_clickMode == SingleClick && isPosOverSelection(_clickPos)) + initiateDrag(event->widget()); + else { + _clickMode = DragStartClick; + handleClick(Qt::LeftButton, _clickPos); + } + _clickMode = NoClick; + } + if (_isSelecting) { + updateSelection(event->scenePos()); + emit mouseMoveWhileSelecting(event->scenePos()); + event->accept(); + } + else if (_clickHandled && _clickMode < DoubleClick) + QGraphicsScene::mouseMoveEvent(event); + } + else + QGraphicsScene::mouseMoveEvent(event); +} + + +void ChatScene::mousePressEvent(QGraphicsSceneMouseEvent *event) +{ + if (event->buttons() == Qt::LeftButton) { + _leftButtonPressed = true; + _clickHandled = false; + if (!isPosOverSelection(event->scenePos())) { + // immediately clear selection if clicked outside; otherwise, wait for potential drag + clearSelection(); + } + if (_clickMode != NoClick && _clickTimer.isActive()) { + switch (_clickMode) { + case NoClick: + _clickMode = SingleClick; break; + case SingleClick: + _clickMode = DoubleClick; break; + case DoubleClick: + _clickMode = TripleClick; break; + case TripleClick: + _clickMode = DoubleClick; break; + case DragStartClick: + break; + } + handleClick(Qt::LeftButton, _clickPos); + } + else { + _clickMode = SingleClick; + _clickPos = event->scenePos(); + } + _clickTimer.start(); + } + if (event->type() == QEvent::GraphicsSceneMouseDoubleClick) + QGraphicsScene::mouseDoubleClickEvent(event); + else + QGraphicsScene::mousePressEvent(event); +} + + +void ChatScene::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) +{ + // we check for doubleclick ourselves, so just call press handler + mousePressEvent(event); +} + + +void ChatScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) +{ + if (event->button() == Qt::LeftButton && _leftButtonPressed) { + _leftButtonPressed = false; + if (_clickMode != NoClick) { + if (_clickMode == SingleClick) + clearSelection(); + event->accept(); + if (!_clickTimer.isActive()) + handleClick(Qt::LeftButton, _clickPos); + } + else { + // no click -> drag or selection move + if (isGloballySelecting()) { + selectionToClipboard(QClipboard::Selection); + _isSelecting = false; + event->accept(); + return; + } + } + } QGraphicsScene::mouseReleaseEvent(event); - } } -void ChatScene::putToClipboard(const QString &selection) { - // TODO Configure clipboards -# ifdef Q_WS_X11 - QApplication::clipboard()->setText(selection, QClipboard::Selection); -# endif -//# else - QApplication::clipboard()->setText(selection); -//# endif + +void ChatScene::clickTimeout() +{ + if (!_leftButtonPressed && _clickMode == SingleClick) + handleClick(Qt::LeftButton, _clickPos); +} + + +void ChatScene::handleClick(Qt::MouseButton button, const QPointF &scenePos) +{ + if (button == Qt::LeftButton) { + clearSelection(); + + // Now send click down to items + ChatItem *chatItem = chatItemAt(scenePos); + if (chatItem) { + chatItem->handleClick(chatItem->mapFromScene(scenePos), _clickMode); + } + _clickHandled = true; + } +} + + +void ChatScene::initiateDrag(QWidget *source) +{ + QDrag *drag = new QDrag(source); + QMimeData *mimeData = new QMimeData; + mimeData->setText(selection()); + drag->setMimeData(mimeData); + + drag->exec(Qt::CopyAction); +} + + +/******** SELECTIONS ******************************************************************************/ + +void ChatScene::selectionToClipboard(QClipboard::Mode mode) +{ + if (!hasSelection()) + return; + + stringToClipboard(selection(), mode); +} + + +void ChatScene::stringToClipboard(const QString &str_, QClipboard::Mode mode) +{ + QString str = str_; + // remove trailing linefeeds + if (str.endsWith('\n')) + str.chop(1); + + switch (mode) { + case QClipboard::Clipboard: + QApplication::clipboard()->setText(str); + break; + case QClipboard::Selection: + if (QApplication::clipboard()->supportsSelection()) + QApplication::clipboard()->setText(str, QClipboard::Selection); + break; + default: + break; + }; } + //!\brief Convert current selection to human-readable string. -QString ChatScene::selectionToString() const { - //TODO Make selection format configurable! - if(!_isSelecting) return QString(); - int start = qMin(_selectionStart, _selectionEnd); - int end = qMax(_selectionStart, _selectionEnd); - if(start < 0 || end >= _lines.count()) { - qDebug() << "Invalid selection range:" << start << end; +QString ChatScene::selection() const +{ + //TODO Make selection format configurable! + if (hasGlobalSelection()) { + int start = qMin(_selectionStart, _selectionEnd); + int end = qMax(_selectionStart, _selectionEnd); + if (start < 0 || end >= _lines.count()) { + qDebug() << "Invalid selection range:" << start << end; + return QString(); + } + QString result; + for (int l = start; l <= end; l++) { + if (_selectionMinCol == ChatLineModel::TimestampColumn) + result += _lines[l]->item(ChatLineModel::TimestampColumn)->data(MessageModel::DisplayRole).toString() + " "; + if (_selectionMinCol <= ChatLineModel::SenderColumn) + result += _lines[l]->item(ChatLineModel::SenderColumn)->data(MessageModel::DisplayRole).toString() + " "; + result += _lines[l]->item(ChatLineModel::ContentsColumn)->data(MessageModel::DisplayRole).toString() + "\n"; + } + return result; + } + else if (selectingItem()) + return selectingItem()->selection(); return QString(); - } - QString result; - for(int l = start; l <= end; l++) { - if(_selectionMinCol == ChatLineModel::TimestampColumn) - result += _lines[l]->item(ChatLineModel::TimestampColumn).data(MessageModel::DisplayRole).toString() + " "; - if(_selectionMinCol <= ChatLineModel::SenderColumn) - result += _lines[l]->item(ChatLineModel::SenderColumn).data(MessageModel::DisplayRole).toString() + " "; - result += _lines[l]->item(ChatLineModel::ContentsColumn).data(MessageModel::DisplayRole).toString() + "\n"; - } - return result; -} - -void ChatScene::requestBacklog() { - static const int REQUEST_COUNT = 50; - int backlogSize = model()->rowCount(); - if(isSingleBufferScene() && backlogSize != 0 && _lastBacklogSize + REQUEST_COUNT <= backlogSize) { - QModelIndex msgIdx = model()->index(0, 0); - MsgId msgId = model()->data(msgIdx, ChatLineModel::MsgIdRole).value(); - BufferId bufferId = model()->data(msgIdx, ChatLineModel::BufferIdRole).value(); - _lastBacklogSize = backlogSize; - Client::backlogManager()->requestBacklog(bufferId, REQUEST_COUNT, msgId.toInt()); - } -} - -int ChatScene::sectionByScenePos(int x) { - if(x < firstColHandle->x()) - return ChatLineModel::TimestampColumn; - if(x < secondColHandle->x()) - return ChatLineModel::SenderColumn; - - return ChatLineModel::ContentsColumn; +} + + +bool ChatScene::hasSelection() const +{ + return hasGlobalSelection() || (selectingItem() && selectingItem()->hasSelection()); +} + + +bool ChatScene::hasGlobalSelection() const +{ + return _selectionStart >= 0; +} + + +bool ChatScene::isGloballySelecting() const +{ + return _isSelecting; +} + + +void ChatScene::clearGlobalSelection() +{ + if (hasGlobalSelection()) { + for (int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++) + _lines[l]->setSelected(false); + _isSelecting = false; + _selectionStart = -1; + } +} + + +void ChatScene::clearSelection() +{ + clearGlobalSelection(); + if (selectingItem()) + selectingItem()->clearSelection(); +} + + +/******** *************************************************************************************/ + +void ChatScene::requestBacklog() +{ + MessageFilter *filter = qobject_cast(model()); + if (filter) + return filter->requestBacklog(); + return; +} + + +ChatLineModel::ColumnType ChatScene::columnByScenePos(qreal x) const +{ + if (x < _firstColHandle->x()) + return ChatLineModel::TimestampColumn; + if (x < _secondColHandle->x()) + return ChatLineModel::SenderColumn; + + return ChatLineModel::ContentsColumn; +} + + +int ChatScene::rowByScenePos(qreal y) const +{ + QList itemList = items(QPointF(0, y)); + + // ChatLine should be at the bottom of the list + for (int i = itemList.count()-1; i >= 0; i--) { + ChatLine *line = qgraphicsitem_cast(itemList.at(i)); + if (line) + return line->row(); + } + return -1; +} + + +void ChatScene::updateSceneRect(qreal width) +{ + if (_lines.isEmpty()) { + updateSceneRect(QRectF(0, 0, width, 0)); + return; + } + + // we hide day change messages at the top by making the scene rect smaller + // and by calling QGraphicsItem::hide() on all leading day change messages + // the first one is needed to ensure proper scrollbar ranges + // the second for cases where the viewport is larger then the set scenerect + // (in this case the items are shown anyways) + if (_firstLineRow == -1) { + int numRows = model()->rowCount(); + _firstLineRow = 0; + QModelIndex firstLineIdx; + while (_firstLineRow < numRows) { + firstLineIdx = model()->index(_firstLineRow, 0); + if ((Message::Type)(model()->data(firstLineIdx, MessageModel::TypeRole).toInt()) != Message::DayChange) + break; + _lines.at(_firstLineRow)->hide(); + _firstLineRow++; + } + } + + // the following call should be safe. If it crashes something went wrong during insert/remove + if (_firstLineRow < _lines.count()) { + ChatLine *firstLine = _lines.at(_firstLineRow); + ChatLine *lastLine = _lines.last(); + updateSceneRect(QRectF(0, firstLine->pos().y(), width, lastLine->pos().y() + lastLine->height() - firstLine->pos().y())); + } + else { + // empty scene rect + updateSceneRect(QRectF(0, 0, width, 0)); + } +} + + +void ChatScene::updateSceneRect(const QRectF &rect) +{ + _sceneRect = rect; + setSceneRect(rect); + update(); +} + + +// ======================================== +// Webkit Only stuff +// ======================================== +#ifdef HAVE_WEBKIT +void ChatScene::loadWebPreview(ChatItem *parentItem, const QUrl &url, const QRectF &urlRect) +{ + if (!_showWebPreview) + return; + + if (webPreview.urlRect != urlRect) + webPreview.urlRect = urlRect; + + if (webPreview.parentItem != parentItem) + webPreview.parentItem = parentItem; + + if (webPreview.url != url) { + webPreview.url = url; + // prepare to load a different URL + if (webPreview.previewItem) { + if (webPreview.previewItem->scene()) + removeItem(webPreview.previewItem); + delete webPreview.previewItem; + webPreview.previewItem = 0; + } + webPreview.previewState = WebPreview::NoPreview; + } + + if (webPreview.url.isEmpty()) + return; + + // qDebug() << Q_FUNC_INFO << webPreview.previewState; + switch (webPreview.previewState) { + case WebPreview::NoPreview: + webPreview.previewState = WebPreview::NewPreview; + webPreview.timer.start(500); + break; + case WebPreview::NewPreview: + case WebPreview::DelayPreview: + case WebPreview::ShowPreview: + // we're already waiting for the next step or showing the preview + break; + case WebPreview::HidePreview: + // we still have a valid preview + webPreview.previewState = WebPreview::DelayPreview; + webPreview.timer.start(1000); + break; + } + // qDebug() << " new State:" << webPreview.previewState << webPreview.timer.isActive(); +} + + +void ChatScene::webPreviewNextStep() +{ + // qDebug() << Q_FUNC_INFO << webPreview.previewState; + switch (webPreview.previewState) { + case WebPreview::NoPreview: + break; + case WebPreview::NewPreview: + Q_ASSERT(!webPreview.previewItem); + webPreview.previewItem = new WebPreviewItem(webPreview.url); + webPreview.previewState = WebPreview::DelayPreview; + webPreview.timer.start(1000); + break; + case WebPreview::DelayPreview: + Q_ASSERT(webPreview.previewItem); + // calc position and show + { + qreal previewY = webPreview.urlRect.bottom(); + qreal previewX = webPreview.urlRect.x(); + if (previewY + webPreview.previewItem->boundingRect().height() > sceneRect().bottom()) + previewY = webPreview.urlRect.y() - webPreview.previewItem->boundingRect().height(); + + if (previewX + webPreview.previewItem->boundingRect().width() > sceneRect().width()) + previewX = sceneRect().right() - webPreview.previewItem->boundingRect().width(); + + webPreview.previewItem->setPos(previewX, previewY); + } + addItem(webPreview.previewItem); + webPreview.previewState = WebPreview::ShowPreview; + break; + case WebPreview::ShowPreview: + qWarning() << "ChatScene::webPreviewNextStep() called while in ShowPreview Step!"; + qWarning() << "removing preview"; + if (webPreview.previewItem && webPreview.previewItem->scene()) + removeItem(webPreview.previewItem); + // Fall through to deletion! + case WebPreview::HidePreview: + if (webPreview.previewItem) { + delete webPreview.previewItem; + webPreview.previewItem = 0; + } + webPreview.parentItem = 0; + webPreview.url = QUrl(); + webPreview.urlRect = QRectF(); + webPreview.previewState = WebPreview::NoPreview; + } + // qDebug() << " new State:" << webPreview.previewState << webPreview.timer.isActive(); +} + + +void ChatScene::clearWebPreview(ChatItem *parentItem) +{ + // qDebug() << Q_FUNC_INFO << webPreview.previewState; + switch (webPreview.previewState) { + case WebPreview::NewPreview: + webPreview.previewState = WebPreview::NoPreview; // we haven't loaded anything yet + break; + case WebPreview::ShowPreview: + if (parentItem == 0 || webPreview.parentItem == parentItem) { + if (webPreview.previewItem && webPreview.previewItem->scene()) + removeItem(webPreview.previewItem); + } + // fall through into to set hidden state + case WebPreview::DelayPreview: + // we're just loading, so haven't shown the preview yet. + webPreview.previewState = WebPreview::HidePreview; + webPreview.timer.start(5000); + break; + case WebPreview::NoPreview: + case WebPreview::HidePreview: + break; + } + // qDebug() << " new State:" << webPreview.previewState << webPreview.timer.isActive(); +} + + +#endif + +// ======================================== +// end of webkit only +// ======================================== + +void ChatScene::showWebPreviewChanged() +{ + ChatViewSettings settings; + _showWebPreview = settings.showWebPreview(); }