***************************************************************************/
#include <QGraphicsTextItem>
+#include <QScrollBar>
-#include "buffer.h"
#include "chatlinemodelitem.h"
#include "chatscene.h"
#include "chatview.h"
#include "client.h"
+#include "messagefilter.h"
#include "quasselui.h"
-ChatView::ChatView(Buffer *buf, QWidget *parent) : QGraphicsView(parent), AbstractChatView() {
- _scene = new ChatScene(Client::messageModel(), this);
- setScene(_scene);
-
- //QGraphicsTextItem *item = scene()->addText(buf->bufferInfo().bufferName());
-
+ChatView::ChatView(BufferId bufferId, QWidget *parent)
+ : QGraphicsView(parent),
+ AbstractChatView(),
+ _currentScaleFactor(1)
+{
+ QList<BufferId> filterList;
+ filterList.append(bufferId);
+ MessageFilter *filter = new MessageFilter(Client::messageModel(), filterList, this);
+ init(filter);
}
+ChatView::ChatView(MessageFilter *filter, QWidget *parent)
+ : QGraphicsView(parent),
+ AbstractChatView(),
+ _currentScaleFactor(1)
+{
+ init(filter);
+}
-ChatView::~ChatView() {
+void ChatView::init(MessageFilter *filter) {
+ setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ setAlignment(Qt::AlignBottom);
+ setInteractive(true);
+ //setOptimizationFlags(QGraphicsView::DontClipPainter | QGraphicsView::DontAdjustForAntialiasing);
+ // setOptimizationFlags(QGraphicsView::DontAdjustForAntialiasing);
+ setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
+ // setTransformationAnchor(QGraphicsView::NoAnchor);
+ setTransformationAnchor(QGraphicsView::AnchorViewCenter);
+
+ _scrollTimer.setInterval(100);
+ _scrollTimer.setSingleShot(true);
+ connect(&_scrollTimer, SIGNAL(timeout()), SLOT(scrollTimerTimeout()));
+
+ _scene = new ChatScene(filter, filter->idString(), viewport()->width() - 2, 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);
+ connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(verticalScrollbarChanged(int)));
}
+void ChatView::resizeEvent(QResizeEvent *event) {
+ QGraphicsView::resizeEvent(event);
-ChatScene *ChatView::scene() const {
- return _scene;
-}
+ // we can reduce viewport updates if we scroll to the bottom allready at the beginning
+ verticalScrollBar()->setValue(verticalScrollBar()->maximum());
+ // FIXME: without the hardcoded -4 Qt reserves space for a horizontal scrollbar even though it's disabled permanently.
+ // this does only occur on QtX11 (at least not on Qt for Mac OS). Seems like a Qt Bug.
+ scene()->updateForViewport(viewport()->width() - 4, viewport()->height());
-void ChatView::clear()
-{
+ _lastScrollbarPos = verticalScrollBar()->maximum();
+ verticalScrollBar()->setValue(verticalScrollBar()->maximum());
}
-void ChatView::prependMsg(AbstractUiMsg *msg) {
- //ChatLine *line = dynamic_cast<ChatLine*>(msg);
- //Q_ASSERT(line);
- //prependChatLine(line);
+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::prependChatLine(ChatLine *line) {
- //qDebug() << "prepending";
+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::prependChatLines(QList<ChatLine *> clist) {
+void ChatView::lastLineChanged(QGraphicsItem *chatLine, qreal offset) {
+ Q_UNUSED(chatLine)
+ if(!scene()->isScrollingAllowed())
+ return;
+ QAbstractSlider *vbar = verticalScrollBar();
+ Q_ASSERT(vbar);
+ if(vbar->maximum() - vbar->value() <= (offset + 5) * _currentScaleFactor ) { // 5px grace area
+ vbar->setValue(vbar->maximum());
+ }
}
-void ChatView::appendMsg(AbstractUiMsg *msg) {
- //ChatLine *line = dynamic_cast<ChatLine*>(msg);
- //Q_ASSERT(line);
- //appendChatLine(line);
+void ChatView::verticalScrollbarChanged(int newPos) {
+ QAbstractSlider *vbar = verticalScrollBar();
+ Q_ASSERT(vbar);
+
+ // check for backlog request
+ if(newPos < _lastScrollbarPos) {
+ int relativePos = 100;
+ if(vbar->maximum() - vbar->minimum() != 0)
+ relativePos = (newPos - vbar->minimum()) * 100 / (vbar->maximum() - vbar->minimum());
+
+ if(relativePos < 20) {
+ scene()->requestBacklog();
+ }
+ }
+ _lastScrollbarPos = newPos;
}
-void ChatView::appendChatLine(ChatLine *line) {
- //qDebug() << "appending";
-}
+MsgId ChatView::lastMsgId() const {
+ if(!scene())
+ return MsgId();
+ QAbstractItemModel *model = scene()->model();
+ if(!model || model->rowCount() == 0)
+ return MsgId();
-void ChatView::appendChatLines(QList<ChatLine *> list) {
- //foreach(ChatLine *line, list) {
-
- //}
+ return model->data(model->index(model->rowCount() - 1, 0), MessageModel::MsgIdRole).value<MsgId>();
}
-void ChatView::setContents(const QList<AbstractUiMsg *> &list) {
- //qDebug() << "setting" << list.count();
- //appendChatLines(list);
+void ChatView::zoomIn() {
+ _currentScaleFactor *= 1.2;
+ scale(1.2, 1.2);
+ scene()->setWidth(viewport()->width() / _currentScaleFactor - 2);
}
+void ChatView::zoomOut() {
+ _currentScaleFactor /= 1.2;
+ scale(1 / 1.2, 1 / 1.2);
+ scene()->setWidth(viewport()->width() / _currentScaleFactor - 2);
+}
+
+void ChatView::zoomNormal() {
+ scale(1/_currentScaleFactor, 1/_currentScaleFactor);
+ _currentScaleFactor = 1;
+ scene()->setWidth(viewport()->width() - 2);
+}
projects / quassel.git / blobdiff