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),
_singleBufferScene = filter->isSingleBufferFilter();
}
- connect(this, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(rectChanged(const QRectF &)));
-
- 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)));
-
- 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();
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);
-
- connect(firstColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
+ secondColHandle->setXPos(secondColHandlePos);
connect(secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
+ connect(this, SIGNAL(sceneRectChanged(const QRectF &)), secondColHandle, SLOT(sceneRectChanged(const QRectF &)));
- firstColHandle->setXPos(firstColHandlePos);
- secondColHandle->setXPos(secondColHandlePos);
setHandleXLimits();
- emit heightChanged(height());
- emit heightChangedAt(0, height());
+ 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)
+ qreal y = sceneRect().y();
+ qreal width = sceneRect().width();
+ bool atTop = true;
+ bool atBottom = 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;
+
+ // right now this method doesn't properly handle messages that are inserted at an arbitrary point
+ Q_ASSERT(atBottom || atTop);
- for(int i = start; i <= end; i++) {
+ 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);
+ 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;
- }
-
- if(h > 0) {
- _height += h;
- for(int i = end+1; i < _lines.count(); i++) {
- _lines.at(i)->moveBy(0, h);
- }
- setSceneRect(QRectF(0, 0, _width, _height));
- emit heightChanged(_height);
- emit heightChangedAt(_lines.at(start)->y(), h);
+ // update sceneRect
+ if(atBottom) {
+ setSceneRect(sceneRect().adjusted(0, 0, 0, h));
+ emit sceneHeightChanged(h);
+ } else {
+ setSceneRect(sceneRect().adjusted(0, h, 0, 0));
}
}
qreal h = 0; // total height of removed items;
+ bool atTop = (start == 0);
+ bool atBottom = (end == _lines.count() - 1);
+
+ // right now this method doesn't properly handle messages that are removed at an arbitrary point
+ Q_ASSERT(atBottom || atTop);
+
// remove items from scene
QList<ChatLine *>::iterator lineIter = _lines.begin() + start;
int lineCount = start;
_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;
- }
-
- // reposition remaining chatlines
- if(h > 0) {
- Q_ASSERT(_height >= h);
- _height -= h;
- for(int i = start; i < _lines.count(); i++) {
- _lines.at(i)->moveBy(0, -h);
- }
- setSceneRect(QRectF(0, 0, _width, _height));
- emit heightChanged(_height);
- Q_ASSERT(_lines.isEmpty() || (start < _lines.count())); // if _lines isn't empty it better contain start
- qreal changePos = (_lines.isEmpty()) ? 0 : _lines.at(start)->y();
- emit heightChangedAt(changePos, -h);
+ // update sceneRect
+ if(atBottom) {
+ setSceneRect(sceneRect().adjusted(0, 0, 0, -h));
+ } else {
+ setSceneRect(sceneRect().adjusted(0, h, 0, 0));
}
}
-void ChatScene::setWidth(qreal w) {
- qreal oldh = _height;
- _width = w;
- _height = 0;
+void ChatScene::setWidth(qreal width, bool forceReposition) {
+ if(width == sceneRect().width() && !forceReposition)
+ return;
+
+ qreal oldHeight = sceneRect().height();
+ qreal y = sceneRect().y();
+ qreal linePos = y;
+
foreach(ChatLine *line, _lines) {
- line->setPos(0, _height);
- _height += line->setGeometry(_width);
+ line->setPos(0, linePos);
+ linePos += line->setGeometry(width);
}
- setSceneRect(QRectF(0, 0, w, _height));
- setHandleXLimits();
- emit heightChanged(_height);
- emit heightChangedAt(0, _height - oldh);
-}
+ qreal height = linePos - y;
+
+ setSceneRect(QRectF(0, y, width, height));
+ setHandleXLimits();
-void ChatScene::rectChanged(const QRectF &rect) {
- firstColHandle->sceneRectChanged(rect);
- secondColHandle->sceneRectChanged(rect);
+ qreal dh = height - oldHeight;
+ if(dh > 0)
+ emit sceneHeightChanged(dh);
}
void ChatScene::handlePositionChanged(qreal xpos) {
s.setValue(QString("ChatView/DefaultFirstColumnHandlePos"), firstColHandlePos);
s.setValue(QString("ChatView/DefaultSecondColumnHandlePos"), secondColHandlePos);
- setWidth(width()); // readjust all chatlines
+ 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());
class ChatScene : public QGraphicsScene {
Q_OBJECT
- public:
- ChatScene(QAbstractItemModel *model, const QString &idString, QObject *parent);
- virtual ~ChatScene();
-
- inline QAbstractItemModel *model() const { return _model; }
- inline QString idString() const { return _idString; }
-
- int sectionByScenePos(int x);
- inline int sectionByScenePos(const QPoint &pos) { return sectionByScenePos(pos.x()); }
- inline bool isSingleBufferScene() const { return _singleBufferScene; }
- inline ChatLine *chatLine(int row) { return (row < _lines.count()) ? _lines[row] : 0; }
-
- inline QRectF firstColumnHandleRect() const { return firstColHandle->boundingRect().translated(firstColHandle->x(), 0); }
- inline QRectF secondColumnHandleRect() const { return secondColHandle->boundingRect().translated(secondColHandle->x(), 0); }
-
- public slots:
- void setWidth(qreal);
-
- // these are used by the chatitems to notify the scene and manage selections
- void setSelectingItem(ChatItem *item);
- ChatItem *selectingItem() const { return _selectingItem; }
- void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
- void putToClipboard(const QString &);
-
- void requestBacklog();
-
- signals:
- void heightChanged(qreal height);
- void heightChangedAt(qreal ypos, qreal hdiff);
-
- protected:
- virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
- virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
- virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
-
- protected slots:
- void rowsInserted(const QModelIndex &, int, int);
- void rowsAboutToBeRemoved(const QModelIndex &, int, int);
-
- private slots:
- void rectChanged(const QRectF &);
- void handlePositionChanged(qreal xpos);
-
- private:
- void setHandleXLimits();
- void updateSelection(const QPointF &pos);
- QString selectionToString() const;
-
- QString _idString;
- qreal _width, _height;
- QAbstractItemModel *_model;
- QList<ChatLine *> _lines;
- bool _singleBufferScene;
-
- ColumnHandleItem *firstColHandle, *secondColHandle;
- qreal firstColHandlePos, secondColHandlePos;
-
- ChatItem *_selectingItem;
- int _selectionStartCol, _selectionMinCol;
- int _selectionStart;
- int _selectionEnd;
- int _firstSelectionRow, _lastSelectionRow;
- bool _isSelecting;
-
- int _lastBacklogSize;
+public:
+ ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, QObject *parent);
+ virtual ~ChatScene();
+
+ inline QAbstractItemModel *model() const { return _model; }
+ inline QString idString() const { return _idString; }
+
+ int sectionByScenePos(int x);
+ inline int sectionByScenePos(const QPoint &pos) { return sectionByScenePos(pos.x()); }
+ inline bool isSingleBufferScene() const { return _singleBufferScene; }
+ inline ChatLine *chatLine(int row) { return (row < _lines.count()) ? _lines[row] : 0; }
+
+ inline QRectF firstColumnHandleRect() const { return firstColHandle->boundingRect().translated(firstColHandle->x(), 0); }
+ inline QRectF secondColumnHandleRect() const { return secondColHandle->boundingRect().translated(secondColHandle->x(), 0); }
+
+public slots:
+ void setWidth(qreal, bool forceReposition = false);
+
+ // these are used by the chatitems to notify the scene and manage selections
+ void setSelectingItem(ChatItem *item);
+ ChatItem *selectingItem() const { return _selectingItem; }
+ void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
+ void putToClipboard(const QString &);
+
+ void requestBacklog();
+
+signals:
+ void sceneHeightChanged(qreal dh);
+
+protected:
+ virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
+ virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
+ virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
+
+protected slots:
+ void rowsInserted(const QModelIndex &, int, int);
+ void rowsAboutToBeRemoved(const QModelIndex &, int, int);
+
+private slots:
+ void handlePositionChanged(qreal xpos);
+
+private:
+ void setHandleXLimits();
+ void updateSelection(const QPointF &pos);
+ QString selectionToString() const;
+
+ QString _idString;
+ QAbstractItemModel *_model;
+ QList<ChatLine *> _lines;
+ bool _singleBufferScene;
+
+ ColumnHandleItem *firstColHandle, *secondColHandle;
+ qreal firstColHandlePos, secondColHandlePos;
+
+ ChatItem *_selectingItem;
+ int _selectionStartCol, _selectionMinCol;
+ int _selectionStart;
+ int _selectionEnd;
+ int _firstSelectionRow, _lastSelectionRow;
+ bool _isSelecting;
+
+ int _lastBacklogSize;
};
#endif
setAlignment(Qt::AlignBottom);
setInteractive(true);
- _scene = new ChatScene(filter, filter->idString(), this);
- connect(_scene, SIGNAL(heightChangedAt(qreal, qreal)), this, SLOT(sceneHeightChangedAt(qreal, qreal)));
+ _scene = new ChatScene(filter, filter->idString(), viewport()->width(), this);
+ connect(_scene, SIGNAL(sceneHeightChanged(qreal)), this, SLOT(sceneHeightChanged(qreal)));
setScene(_scene);
- _lastScrollbarPos = 0;
+ _lastScrollbarPos = verticalScrollBar()->maximum();
connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(verticalScrollbarChanged(int)));
}
void ChatView::resizeEvent(QResizeEvent *event) {
- scene()->setWidth(event->size().width() - 2); // FIXME figure out why we have to hardcode the -2 here
+// scene()->setWidth(event->size().width() - 2); // FIXME figure out why we have to hardcode the -2 here
+ QGraphicsView::resizeEvent(event);
+ scene()->setWidth(viewport()->width());
verticalScrollBar()->setValue(verticalScrollBar()->maximum());
}
-void ChatView::sceneHeightChangedAt(qreal ypos, qreal hdiff) {
- setSceneRect(scene()->sceneRect());
- int y = mapFromScene(0, ypos).y();
- if(y <= viewport()->height() + 2) { // be a bit tolerant here, also FIXME (why we need the 2px?)
- verticalScrollBar()->setValue(verticalScrollBar()->value() + hdiff);
- }
+void ChatView::sceneHeightChanged(qreal dh) {
+ QAbstractSlider *vbar = verticalScrollBar();
+ Q_ASSERT(vbar);
+ if(vbar->maximum() - vbar->value() <= dh + 5) // in case we had scrolled only about half a line to the bottom we allow a grace of 5
+ vbar->setValue(vbar->maximum());
}
void ChatView::verticalScrollbarChanged(int newPos) {
QAbstractSlider *vbar = verticalScrollBar();
Q_ASSERT(vbar);
-
- // FIXME dirty hack to battle the "I just scroll up a pixel on hide()/show()" problem
- if(vbar->maximum() - vbar->value() < 5) vbar->setValue(vbar->maximum());
if(newPos < _lastScrollbarPos) {
int relativePos = 100;