#include <QGraphicsTextItem>
#include <QScrollBar>
-#include "buffer.h"
#include "chatlinemodelitem.h"
#include "chatscene.h"
#include "chatview.h"
#include "messagefilter.h"
#include "quasselui.h"
-ChatView::ChatView(Buffer *buf, QWidget *parent) : QGraphicsView(parent), AbstractChatView() {
+ChatView::ChatView(BufferId bufferId, QWidget *parent)
+ : QGraphicsView(parent),
+ AbstractChatView()
+{
QList<BufferId> filterList;
- filterList.append(buf->bufferInfo().bufferId());
+ filterList.append(bufferId);
MessageFilter *filter = new MessageFilter(Client::messageModel(), filterList, this);
init(filter);
-
}
-ChatView::ChatView(MessageFilter *filter, QWidget *parent) : QGraphicsView(parent), AbstractChatView() {
+ChatView::ChatView(MessageFilter *filter, QWidget *parent)
+ : QGraphicsView(parent),
+ AbstractChatView()
+{
init(filter);
}
setAlignment(Qt::AlignBottom);
setInteractive(true);
- _scene = new ChatScene(filter, filter->idString(), this);
- connect(_scene, SIGNAL(heightChanged(qreal)), this, SLOT(sceneHeightChanged(qreal)));
+ _scene = new ChatScene(filter, filter->idString(), viewport()->width() - 2, this); // see below: resizeEvent()
+ connect(_scene, SIGNAL(sceneHeightChanged(qreal)), this, SLOT(sceneHeightChanged(qreal)));
setScene(_scene);
- connect(verticalScrollBar(), SIGNAL(sliderPressed()), this, SLOT(sliderPressed()));
- connect(verticalScrollBar(), SIGNAL(sliderReleased()), this, SLOT(sliderReleased()));
+ _lastScrollbarPos = verticalScrollBar()->maximum();
connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(verticalScrollbarChanged(int)));
}
-ChatView::~ChatView() {
-
-}
-
-ChatScene *ChatView::scene() const {
- return _scene;
-}
-
-void ChatView::clear() {
-
-}
-
void ChatView::resizeEvent(QResizeEvent *event) {
- scene()->setWidth(event->size().width() - 2); // FIXME figure out why we have to hardcode the -2 here
+ QGraphicsView::resizeEvent(event);
+ scene()->setWidth(viewport()->width() - 2); // FIXME figure out why we have to hardcode the -2 here -> Qt-Bug most probably
verticalScrollBar()->setValue(verticalScrollBar()->maximum());
}
-void ChatView::sceneHeightChanged(qreal h) {
- Q_UNUSED(h)
- bool scrollable = qAbs(verticalScrollBar()->value() - verticalScrollBar()->maximum()) <= 2; // be a bit tolerant here, also FIXME (why we need this?)
- setSceneRect(scene()->sceneRect());
- if(scrollable) verticalScrollBar()->setValue(verticalScrollBar()->maximum());
-}
-
-void ChatView::setBufferForBacklogFetching(BufferId id) {
- scene()->setBufferForBacklogFetching(id);
-}
-
-void ChatView::sliderPressed() {
- verticalScrollbarChanged(verticalScrollBar()->value());
-}
-
-void ChatView::sliderReleased() {
- if(scene()->isFetchingBacklog()) scene()->setIsFetchingBacklog(false);
+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) {
- Q_UNUSED(newPos);
- if(!scene()->isBacklogFetchingEnabled()) return;
-
QAbstractSlider *vbar = verticalScrollBar();
- if(!vbar)
- return;
- if(vbar->isSliderDown()) {
- /*
+ Q_ASSERT(vbar);
+
+ if(vbar->maximum() - vbar->value() <= 5) // FIXME workaround the fact that the view gets scrolled up a few px on buffer change
+ vbar->setValue(vbar->maximum());
+
+ if(newPos < _lastScrollbarPos) {
int relativePos = 100;
if(vbar->maximum() - vbar->minimum() != 0)
relativePos = (newPos - vbar->minimum()) * 100 / (vbar->maximum() - vbar->minimum());
- scene()->setIsFetchingBacklog(relativePos < 20);
- */
- scene()->setIsFetchingBacklog(vbar->value() == vbar->minimum());
+
+ if(relativePos < 20) {
+ scene()->requestBacklog();
+ }
}
+ _lastScrollbarPos = newPos;
+}
+
+MsgId ChatView::lastMsgId() const {
+ if(!scene())
+ return MsgId();
+
+ QAbstractItemModel *model = scene()->model();
+ if(!model || model->rowCount() == 0)
+ return MsgId();
+
+ return model->data(model->index(model->rowCount() - 1, 0), MessageModel::MsgIdRole).value<MsgId>();
}