#include "columnhandleitem.h"
#include "messagefilter.h"
#include "qtui.h"
-#include "qtuisettings.h"
+#include "chatviewsettings.h"
const qreal minContentsWidth = 200;
-ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, QObject *parent)
- : QGraphicsScene(parent),
+ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, QObject *parent)
+ : QGraphicsScene(0, 0, width, 0, parent),
_idString(idString),
- _width(0),
- _height(0),
_model(model),
_singleBufferScene(false),
_selectingItem(0),
- _lastItem(0),
_selectionStart(-1),
_isSelecting(false),
- _fetchingBacklog(false)
+ _lastBacklogSize(0)
{
MessageFilter *filter = qobject_cast<MessageFilter*>(model);
if(filter) {
_singleBufferScene = filter->isSingleBufferFilter();
}
- connect(this, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(rectChanged(const QRectF &)));
+ ChatViewSettings defaultSettings;
+ int defaultFirstColHandlePos = defaultSettings.value("FirstColumnHandlePos", 80).toInt();
+ int defaultSecondColHandlePos = defaultSettings.value("SecondColumnHandlePos", 200).toInt();
- connect(model, SIGNAL(rowsInserted(const QModelIndex &, int, int)), this, SLOT(rowsInserted(const QModelIndex &, int, int)));
- connect(model, SIGNAL(modelAboutToBeReset()), this, SLOT(modelReset()));
- for(int i = 0; i < model->rowCount(); i++) {
- ChatLine *line = new ChatLine(i, model);
- _lines.append(line);
- addItem(line);
- }
-
- 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);
- secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator()); addItem(secondColHandle);
+ 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(handlePositionChanged(qreal)));
- connect(secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
+ connect(this, SIGNAL(sceneRectChanged(const QRectF &)), firstColHandle, SLOT(sceneRectChanged(const QRectF &)));
- firstColHandle->setXPos(firstColHandlePos);
- firstColHandle->setXLimits(0, secondColHandlePos);
+ secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator());
+ addItem(secondColHandle);
secondColHandle->setXPos(secondColHandlePos);
- secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
+ connect(secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
+ connect(this, SIGNAL(sceneRectChanged(const QRectF &)), secondColHandle, SLOT(sceneRectChanged(const QRectF &)));
- emit heightChanged(height());
+ 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);
- // maybe make this more efficient by prepending stuff with negative yval
- // dunno if that's worth not guranteeing that 0 is on the top...
- // TODO bulk inserts, iterators
qreal h = 0;
- qreal y = 0;
- if(_width && start > 0) y = _lines.value(start - 1)->y() + _lines.value(start - 1)->height();
- for(int i = start; i <= end; i++) {
+ 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(i, line);
+ _lines.insert(start, line);
addItem(line);
- if(_width > 0) {
- line->setPos(0, y+h);
- h += line->setGeometry(_width, firstColHandlePos, secondColHandlePos);
+ 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);
}
- if(h > 0) {
- _height += h;
- for(int i = end+1; i < _lines.count(); i++) {
- _lines.value(i)->moveBy(0, h);
+ // 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;
}
- setSceneRect(QRectF(0, 0, _width, _height));
- emit heightChanged(_height);
+ 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);
}
- requestBacklogIfNeeded();
}
-void ChatScene::modelReset() {
- foreach(ChatLine *line, _lines) {
- removeItem(line);
- delete line;
+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<ChatLine *>::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);
}
- _lines.clear();
- setSceneRect(QRectF(0, 0, _width, 0));
+
+ // 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 w) {
- _width = w;
- _height = 0;
+void ChatScene::setWidth(qreal width, bool forceReposition) {
+ if(width == sceneRect().width() && !forceReposition)
+ return;
+
+ // clock_t startT = clock();
+ qreal oldHeight = sceneRect().height();
+ qreal y = sceneRect().y();
+ qreal linePos = y;
+
foreach(ChatLine *line, _lines) {
- line->setPos(0, _height);
- _height += line->setGeometry(_width, firstColHandlePos, secondColHandlePos);
+ line->setPos(0, linePos);
+ linePos += line->setGeometry(width);
}
- setSceneRect(QRectF(0, 0, w, _height));
- secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
- emit heightChanged(_height);
-}
-void ChatScene::rectChanged(const QRectF &rect) {
- firstColHandle->sceneRectChanged(rect);
- secondColHandle->sceneRectChanged(rect);
+ qreal height = linePos - y;
+
+ setSceneRect(QRectF(0, y, width, height));
+ setHandleXLimits();
+
+ qreal dh = height - oldHeight;
+ if(dh > 0)
+ emit sceneHeightChanged(dh);
+
+ // clock_t endT = clock();
+ // qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec";
}
void ChatScene::handlePositionChanged(qreal xpos) {
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()); // readjust all chatlines
+ ChatViewSettings viewSettings(this);
+ viewSettings.setValue("FirstColumnHandlePos", firstColHandlePos);
+ viewSettings.setValue("SecondColumnHandlePos", secondColHandlePos);
+
+ ChatViewSettings defaultSettings;
+ defaultSettings.setValue("FirstColumnHandlePos", firstColHandlePos);
+ defaultSettings.setValue("SecondColumnHandlePos", 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) - firstColHandle->width()/2, 0, qMax(oldx, xpos) + firstColHandle->width()/2, height());
+ //update(qMin(oldx, xpos), 0, qMax(oldx, xpos) + firstColHandle->width(), height());
+}
+
+void ChatScene::setHandleXLimits() {
+ firstColHandle->setXLimits(0, secondColHandle->sceneLeft());
+ secondColHandle->setXLimits(firstColHandle->sceneRight(), width() - minContentsWidth);
}
void ChatScene::setSelectingItem(ChatItem *item) {
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<ChatItem *>(itemAt(QPointF(secondColHandlePos + secondColHandle->width()/2, pos.y())));
+ ChatItem *contentItem = static_cast<ChatItem *>(itemAt(QPointF(secondColHandle->sceneRight() + 1, pos.y())));
if(!contentItem) return;
int curRow = contentItem->row();
int curColumn;
- if(pos.x() > secondColHandlePos + secondColHandle->width()/2) curColumn = ChatLineModel::ContentsColumn;
+ if(pos.x() > secondColHandle->sceneRight()) curColumn = ChatLineModel::ContentsColumn;
else if(pos.x() > firstColHandlePos) curColumn = ChatLineModel::SenderColumn;
else curColumn = ChatLineModel::TimestampColumn;
_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);
_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));
_lines[l]->setSelected(false);
}
_selectionStart = -1;
- event->accept();
+ 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) {
-# ifdef Q_WS_X11
- QApplication::clipboard()->setText(selectionToString(), QClipboard::Selection);
-# endif
-//# else
- QApplication::clipboard()->setText(selectionToString());
-//# endif
+ putToClipboard(selectionToString());
_isSelecting = false;
event->accept();
} else {
}
}
+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
+}
+
//!\brief Convert current selection to human-readable string.
QString ChatScene::selectionToString() const {
//TODO Make selection format configurable!
return result;
}
-void ChatScene::setIsFetchingBacklog(bool fetch) {
- if(!isBacklogFetchingEnabled()) return;
-
- if(!fetch) {
- _fetchingBacklog = false;
- } else {
- _fetchingBacklog = true;
- requestBacklogIfNeeded();
- }
-}
-
-void ChatScene::requestBacklogIfNeeded() {
- const int REQUEST_COUNT = 50;
-
- if(!isBacklogFetchingEnabled() || !isFetchingBacklog() || !model()->rowCount()) return;
-
- MsgId msgId = model()->data(model()->index(0, 0), ChatLineModel::MsgIdRole).value<MsgId>();
- if(!_lastBacklogOffset.isValid() || (msgId < _lastBacklogOffset && _lastBacklogSize + REQUEST_COUNT <= model()->rowCount())) {
- Client::backlogManager()->requestBacklog(bufferForBacklogFetching(), REQUEST_COUNT, msgId.toInt());
- _lastBacklogOffset = msgId;
- _lastBacklogSize = model()->rowCount();
+void ChatScene::requestBacklog() {
+ static const int REQUEST_COUNT = 100;
+ 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<MsgId>();
+ BufferId bufferId = model()->data(msgIdx, ChatLineModel::BufferIdRole).value<BufferId>();
+ _lastBacklogSize = backlogSize;
+ Client::backlogManager()->requestBacklog(bufferId, REQUEST_COUNT, msgId.toInt());
}
}
int ChatScene::sectionByScenePos(int x) {
- if(x < firstColHandlePos)
+ if(x < firstColHandle->x())
return ChatLineModel::TimestampColumn;
- if(x < secondColHandlePos)
+ if(x < secondColHandle->x())
return ChatLineModel::SenderColumn;
return ChatLineModel::ContentsColumn;
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