* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
-#include <QApplication>
#include <QGraphicsTextItem>
+#include <QMenu>
#include <QScrollBar>
+#include "bufferwidget.h"
#include "chatlinemodelitem.h"
#include "chatscene.h"
#include "chatview.h"
ChatView::ChatView(BufferId bufferId, QWidget *parent)
: QGraphicsView(parent),
AbstractChatView(),
+ _bufferContainer(0),
_currentScaleFactor(1)
{
QList<BufferId> filterList;
ChatView::ChatView(MessageFilter *filter, QWidget *parent)
: QGraphicsView(parent),
AbstractChatView(),
+ _bufferContainer(0),
_currentScaleFactor(1)
{
init(filter);
// setTransformationAnchor(QGraphicsView::NoAnchor);
setTransformationAnchor(QGraphicsView::AnchorViewCenter);
- _scene = new ChatScene(filter, filter->idString(), viewport()->width() - 2, this); // see below: resizeEvent()
+ _scrollTimer.setInterval(100);
+ _scrollTimer.setSingleShot(true);
+ connect(&_scrollTimer, SIGNAL(timeout()), SLOT(scrollTimerTimeout()));
+
+ _scene = new ChatScene(filter, filter->idString(), viewport()->width() - 4, this); // see below: resizeEvent()
connect(_scene, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(sceneRectChanged(const QRectF &)));
connect(_scene, SIGNAL(lastLineChanged(QGraphicsItem *, qreal)), this, SLOT(lastLineChanged(QGraphicsItem *, qreal)));
+ connect(_scene, SIGNAL(mouseMoveWhileSelecting(const QPointF &)), this, SLOT(mouseMoveWhileSelecting(const QPointF &)));
setScene(_scene);
// installEventFilter(_scene);
verticalScrollBar()->setValue(verticalScrollBar()->maximum());
}
+void ChatView::mouseMoveWhileSelecting(const QPointF &scenePos) {
+ int y = (int)mapFromScene(scenePos).y();
+ _scrollOffset = 0;
+ if(y < 0)
+ _scrollOffset = y;
+ else if(y > height())
+ _scrollOffset = y - height();
+
+ if(_scrollOffset && !_scrollTimer.isActive())
+ _scrollTimer.start();
+}
+
+void ChatView::scrollTimerTimeout() {
+ // scroll view
+ QAbstractSlider *vbar = verticalScrollBar();
+ if(_scrollOffset < 0 && vbar->value() > 0)
+ vbar->setValue(qMax(vbar->value() + _scrollOffset, 0));
+ else if(_scrollOffset > 0 && vbar->value() < vbar->maximum())
+ vbar->setValue(qMin(vbar->value() + _scrollOffset, vbar->maximum()));
+}
+
void ChatView::lastLineChanged(QGraphicsItem *chatLine, qreal offset) {
Q_UNUSED(chatLine)
+ // disabled until further testing/discussion
+ //if(!scene()->isScrollingAllowed())
+ // return;
+
QAbstractSlider *vbar = verticalScrollBar();
Q_ASSERT(vbar);
- if(QApplication::mouseButtons() == Qt::NoButton
- && vbar->maximum() - vbar->value() <= (offset + 5) * _currentScaleFactor ) { // 5px grace area
+ if(vbar->maximum() - vbar->value() <= (offset + 5) * _currentScaleFactor ) { // 5px grace area
vbar->setValue(vbar->maximum());
}
}
return model->data(model->index(model->rowCount() - 1, 0), MessageModel::MsgIdRole).value<MsgId>();
}
+void ChatView::addActionsToMenu(QMenu *menu, const QPointF &pos) {
+ // zoom actions
+ BufferWidget *bw = qobject_cast<BufferWidget *>(bufferContainer());
+ if(bw) {
+ bw->addActionsToMenu(menu, pos);
+ menu->addSeparator();
+ }
+}
+
void ChatView::zoomIn() {
_currentScaleFactor *= 1.2;
scale(1.2, 1.2);
scene()->setWidth(viewport()->width() / _currentScaleFactor - 2);
}
-void ChatView::zoomNormal() {
+void ChatView::zoomOriginal() {
scale(1/_currentScaleFactor, 1/_currentScaleFactor);
_currentScaleFactor = 1;
scene()->setWidth(viewport()->width() - 2);