Introduce the concept of an "active" bufferview

[quassel.git] / src / qtui / chatview.cpp

diff --git a/src/qtui/chatview.cpp b/src/qtui/chatview.cpp
index 71c1427..cc5009b 100644 (file)
--- a/src/qtui/chatview.cpp
+++ b/src/qtui/chatview.cpp
@@ -32,12 +32,11 @@
 #include "qtuistyle.h"
 #include "clientignorelistmanager.h"
 
+#include "chatline.h"
+
 ChatView::ChatView(BufferId bufferId, QWidget *parent)
   : QGraphicsView(parent),
-    AbstractChatView(),
-    _bufferContainer(0),
-    _currentScaleFactor(1),
-    _invalidateFilter(false)
+    AbstractChatView()
 {
   QList<BufferId> filterList;
   filterList.append(bufferId);
@@ -47,15 +46,16 @@ ChatView::ChatView(BufferId bufferId, QWidget *parent)
 
 ChatView::ChatView(MessageFilter *filter, QWidget *parent)
   : QGraphicsView(parent),
-    AbstractChatView(),
-    _bufferContainer(0),
-    _currentScaleFactor(1),
-    _invalidateFilter(false)
+    AbstractChatView()
 {
   init(filter);
 }
 
 void ChatView::init(MessageFilter *filter) {
+  _bufferContainer = 0;
+  _currentScaleFactor = 1;
+  _invalidateFilter = false;
+
   setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
   setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
   setAlignment(Qt::AlignLeft|Qt::AlignBottom);
@@ -79,6 +79,8 @@ void ChatView::init(MessageFilter *filter) {
   connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(verticalScrollbarChanged(int)));
   _lastScrollbarPos = verticalScrollBar()->value();
 
+  connect(Client::networkModel(), SIGNAL(markerLineSet(BufferId,MsgId)), SLOT(markerLineSet(BufferId,MsgId)));
+
   // only connect if client is synched with a core
   if(Client::isConnected())
     connect(Client::ignoreListManager(), SIGNAL(ignoreListChanged()), this, SLOT(invalidateFilter()));
@@ -119,6 +121,8 @@ bool ChatView::event(QEvent *event) {
 void ChatView::resizeEvent(QResizeEvent *event) {
   QGraphicsView::resizeEvent(event);
 
+  // FIXME: do we really need to scroll down on resize?
+
   // we can reduce viewport updates if we scroll to the bottom allready at the beginning
   verticalScrollBar()->setValue(verticalScrollBar()->maximum());
   scene()->updateForViewport(viewport()->width(), viewport()->height());
@@ -126,6 +130,8 @@ void ChatView::resizeEvent(QResizeEvent *event) {
 
   _lastScrollbarPos = verticalScrollBar()->maximum();
   verticalScrollBar()->setValue(verticalScrollBar()->maximum());
+
+  checkChatLineCaches();
 }
 
 void ChatView::adjustSceneRect() {
@@ -202,7 +208,83 @@ MsgId ChatView::lastMsgId() const {
   if(!model || model->rowCount() == 0)
     return MsgId();
 
-  return model->data(model->index(model->rowCount() - 1, 0), MessageModel::MsgIdRole).value<MsgId>();
+  return model->index(model->rowCount() - 1, 0).data(MessageModel::MsgIdRole).value<MsgId>();
+}
+
+MsgId ChatView::lastVisibleMsgId() const {
+  ChatLine *line = lastVisibleChatLine();
+
+  if(line)
+    return line->msgId();
+
+  return MsgId();
+}
+
+bool chatLinePtrLessThan(ChatLine *one, ChatLine *other) {
+  return one->row() < other->row();
+}
+
+// TODO: figure out if it's cheaper to use a cached list (that we'd need to keep updated)
+QSet<ChatLine *> ChatView::visibleChatLines(Qt::ItemSelectionMode mode) const {
+  QSet<ChatLine *> result;
+  foreach(QGraphicsItem *item, items(viewport()->rect().adjusted(-1, -1, 1, 1), mode)) {
+    ChatLine *line = qgraphicsitem_cast<ChatLine *>(item);
+    if(line)
+      result.insert(line);
+  }
+  return result;
+}
+
+QList<ChatLine *> ChatView::visibleChatLinesSorted(Qt::ItemSelectionMode mode) const {
+  QList<ChatLine *> result = visibleChatLines(mode).toList();
+  qSort(result.begin(), result.end(), chatLinePtrLessThan);
+  return result;
+}
+
+ChatLine *ChatView::lastVisibleChatLine(bool ignoreDayChange) const {
+  if(!scene())
+    return 0;
+
+  QAbstractItemModel *model = scene()->model();
+  if(!model || model->rowCount() == 0)
+    return 0;
+
+  int row = -1;
+
+  QSet<ChatLine *> visibleLines = visibleChatLines(Qt::ContainsItemBoundingRect);
+  foreach(ChatLine *line, visibleLines) {
+    if(line->row() > row && (ignoreDayChange? line->msgType() != Message::DayChange : true))
+      row = line->row();
+  }
+
+  if(row >= 0)
+    return scene()->chatLine(row);
+
+  return 0;
+}
+
+void ChatView::setMarkerLineVisible(bool visible) {
+  scene()->setMarkerLineVisible(visible);
+}
+
+void ChatView::setMarkerLine(MsgId msgId) {
+  if(!scene()->isSingleBufferScene())
+    return;
+
+  BufferId bufId = scene()->singleBufferId();
+  Client::setMarkerLine(bufId, msgId);
+}
+
+void ChatView::markerLineSet(BufferId buffer, MsgId msgId) {
+  if(!scene()->isSingleBufferScene() || scene()->singleBufferId() != buffer)
+    return;
+
+  scene()->setMarkerLine(msgId);
+  scene()->setMarkerLineVisible(true);
+}
+
+void ChatView::jumpToMarkerLine(bool requestBacklog) {
+  scene()->jumpToMarkerLine(requestBacklog);
 }
 
 void ChatView::addActionsToMenu(QMenu *menu, const QPointF &pos) {
@@ -244,3 +326,29 @@ void ChatView::invalidateFilter() {
     _invalidateFilter = true;
   }
 }
+
+void ChatView::scrollContentsBy(int dx, int dy) {
+  QGraphicsView::scrollContentsBy(dx, dy);
+  checkChatLineCaches();
+}
+
+void ChatView::setHasCache(ChatLine *line, bool hasCache) {
+  if(hasCache)
+    _linesWithCache.insert(line);
+  else
+    _linesWithCache.remove(line);
+}
+
+void ChatView::checkChatLineCaches() {
+  qreal top = mapToScene(viewport()->rect().topLeft()).y() - 10; // some grace area to avoid premature cleaning
+  qreal bottom = mapToScene(viewport()->rect().bottomRight()).y() + 10;
+  QSet<ChatLine *>::iterator iter = _linesWithCache.begin();
+  while(iter != _linesWithCache.end()) {
+    ChatLine *line = *iter;
+    if(line->pos().y() + line->height() < top || line->pos().y() > bottom) {
+      line->clearCache();
+      iter = _linesWithCache.erase(iter);
+    } else
+      ++iter;
+  }
+}