X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fqtui%2Fchatview.cpp;h=d360d9de9f2a71b16202903d4ee83567bdab7568;hp=fe15416bb8b421c4e0ee252e7f3e5b71c4a19884;hb=31745736b8b31647f6224c5a3fe9e82e0320f0f1;hpb=69617bf3e612562feda908587c5fec2c50b77aaf

diff --git a/src/qtui/chatview.cpp b/src/qtui/chatview.cpp
index fe15416b..d360d9de 100644
--- a/src/qtui/chatview.cpp
+++ b/src/qtui/chatview.cpp
@@ -21,7 +21,6 @@
 #include <QGraphicsTextItem>
 #include <QScrollBar>
 
-#include "buffer.h"
 #include "chatlinemodelitem.h"
 #include "chatscene.h"
 #include "chatview.h"
@@ -29,80 +28,135 @@
 #include "messagefilter.h"
 #include "quasselui.h"
 
-ChatView::ChatView(Buffer *buf, QWidget *parent) : QGraphicsView(parent), AbstractChatView() {
-  setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
-  setOptimizationFlags(QGraphicsView::DontClipPainter
-      |QGraphicsView::DontSavePainterState
-      |QGraphicsView::DontAdjustForAntialiasing);
-  setAlignment(Qt::AlignBottom);
-
+ChatView::ChatView(BufferId bufferId, QWidget *parent)
+  : QGraphicsView(parent),
+    AbstractChatView(),
+    _currentScaleFactor(1)
+{
   QList<BufferId> filterList;
-  filterList.append(buf->bufferInfo().bufferId());
+  filterList.append(bufferId);
   MessageFilter *filter = new MessageFilter(Client::messageModel(), filterList, this);
-
-  _scene = new ChatScene(filter, this);
-  connect(_scene, SIGNAL(heightChanged(int)), this, SLOT(sceneHeightChanged(int)));
-  setScene(_scene);
+  init(filter);
 }
 
-
-ChatView::~ChatView() {
-
+ChatView::ChatView(MessageFilter *filter, QWidget *parent)
+  : QGraphicsView(parent),
+    AbstractChatView(),
+    _currentScaleFactor(1)
+{
+  init(filter);
 }
 
+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);
 
-ChatScene *ChatView::scene() const {
-  return _scene;
+  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
+  QGraphicsView::resizeEvent(event);
+
+  // we can reduce viewport updates if we scroll to the bottom allready at the beginning
   verticalScrollBar()->setValue(verticalScrollBar()->maximum());
-}
 
-void ChatView::sceneHeightChanged(int h) {
-  bool scrollable = verticalScrollBar()->value() == verticalScrollBar()->maximum();
-  setSceneRect(scene()->sceneRect());
-  if(scrollable) 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();
 
-void ChatView::prependChatLine(ChatLine *line) {
-  //qDebug() << "prepending";
+  if(_scrollOffset && !_scrollTimer.isActive())
+    _scrollTimer.start();
 }
 
-void ChatView::prependChatLines(QList<ChatLine *> clist) {
-
+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::appendMsg(AbstractUiMsg *msg) {
-  //ChatLine *line = dynamic_cast<ChatLine*>(msg);
-  //Q_ASSERT(line);
-  //appendChatLine(line);
+void ChatView::lastLineChanged(QGraphicsItem *chatLine, qreal offset) {
+  Q_UNUSED(chatLine)
+  QAbstractSlider *vbar = verticalScrollBar();
+  Q_ASSERT(vbar);
+  if(vbar->maximum() - vbar->value() <= (offset + 5) * _currentScaleFactor ) { // 5px grace area
+    vbar->setValue(vbar->maximum());
+  }
 }
 
-void ChatView::appendChatLine(ChatLine *line) {
-  //qDebug() << "appending";
+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;
 }
 
+MsgId ChatView::lastMsgId() const {
+  if(!scene())
+    return MsgId();
 
-void ChatView::appendChatLines(QList<ChatLine *> list) {
-  //foreach(ChatLine *line, list) {
+  QAbstractItemModel *model = scene()->model();
+  if(!model || model->rowCount() == 0)
+    return MsgId();
 
-  //}
+  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);
+}