X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fqtui%2Fchatscene.cpp;h=b5dd4528cb26e5c01544130c0b67e0638012f96c;hp=67ce63c6ea8037e9d700864c9b5b0578acfbae91;hb=d77cc962c2bc0de9e6288020804842ffe116f838;hpb=a787e8b6e8dd5357531fa89d22da95ebf987469c

diff --git a/src/qtui/chatscene.cpp b/src/qtui/chatscene.cpp
index 67ce63c6..b5dd4528 100644
--- a/src/qtui/chatscene.cpp
+++ b/src/qtui/chatscene.cpp
@@ -32,80 +32,112 @@
 #include "columnhandleitem.h"
 #include "messagefilter.h"
 #include "qtui.h"
-#include "qtuisettings.h"
+#include "qtuistyle.h"
+#include "chatviewsettings.h"
+#include "webpreviewitem.h"
 
 const qreal minContentsWidth = 200;
 
-ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, QObject *parent)
-  : QGraphicsScene(parent),
+ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, QObject *parent)
+  : QGraphicsScene(0, 0, width, 0, parent),
     _idString(idString),
-    _width(0),
-    _height(0),
     _model(model),
     _singleBufferScene(false),
+    _sceneRect(0, 0, width, 0),
+    _firstLineRow(-1),
+    _viewportHeight(0),
     _selectingItem(0),
     _selectionStart(-1),
-    _isSelecting(false)
+    _isSelecting(false),
+    _lastBacklogSize(0)
 {
   MessageFilter *filter = qobject_cast<MessageFilter*>(model);
   if(filter) {
     _singleBufferScene = filter->isSingleBufferFilter();
   }
 
-  connect(this, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(rectChanged(const QRectF &)));
+  ChatViewSettings defaultSettings;
+  int defaultFirstColHandlePos = defaultSettings.value("FirstColumnHandlePos", 80).toInt();
+  int defaultSecondColHandlePos = defaultSettings.value("SecondColumnHandlePos", 200).toInt();
 
-  connect(model, SIGNAL(rowsInserted(const QModelIndex &, int, int)), this, SLOT(rowsInserted(const QModelIndex &, int, int)));
-  connect(model, SIGNAL(modelAboutToBeReset()), this, SLOT(modelReset()));
-  for(int i = 0; i < model->rowCount(); i++) {
-    ChatLine *line = new ChatLine(i, model);
-    _lines.append(line);
-    addItem(line);
-  }
-
-  QtUiSettings s;
-  int defaultFirstColHandlePos = s.value("ChatView/DefaultFirstColumnHandlePos", 80).toInt();
-  int defaultSecondColHandlePos = s.value("ChatView/DefaultSecondColumnHandlePos", 200).toInt();
-
-  firstColHandlePos = s.value(QString("ChatView/%1/FirstColumnHandlePos").arg(_idString),
-                               defaultFirstColHandlePos).toInt();
-  secondColHandlePos = s.value(QString("ChatView/%1/SecondColumnHandlePos").arg(_idString),
-                                defaultSecondColHandlePos).toInt();
-
-  firstColHandle = new ColumnHandleItem(QtUi::style()->firstColumnSeparator()); addItem(firstColHandle);
-  secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator()); addItem(secondColHandle);
+  ChatViewSettings viewSettings(this);
+  firstColHandlePos = viewSettings.value("FirstColumnHandlePos", defaultFirstColHandlePos).toInt();
+  secondColHandlePos = viewSettings.value("SecondColumnHandlePos", defaultSecondColHandlePos).toInt();
 
+  firstColHandle = new ColumnHandleItem(QtUi::style()->firstColumnSeparator());
+  addItem(firstColHandle);
+  firstColHandle->setXPos(firstColHandlePos);
   connect(firstColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
-  connect(secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
+  connect(this, SIGNAL(sceneRectChanged(const QRectF &)), firstColHandle, SLOT(sceneRectChanged(const QRectF &)));
 
-  firstColHandle->setXPos(firstColHandlePos);
-  firstColHandle->setXLimits(0, secondColHandlePos);
+  secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator());
+  addItem(secondColHandle);
   secondColHandle->setXPos(secondColHandlePos);
-  secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
+  connect(secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
+  connect(this, SIGNAL(sceneRectChanged(const QRectF &)), secondColHandle, SLOT(sceneRectChanged(const QRectF &)));
+
+  setHandleXLimits();
+
+  connect(model, SIGNAL(rowsInserted(const QModelIndex &, int, int)),
+	  this, SLOT(rowsInserted(const QModelIndex &, int, int)));
+  connect(model, SIGNAL(rowsAboutToBeRemoved(const QModelIndex &, int, int)),
+	  this, SLOT(rowsAboutToBeRemoved(const QModelIndex &, int, int)));
 
-  emit heightChanged(height());
+  if(model->rowCount() > 0)
+    rowsInserted(QModelIndex(), 0, model->rowCount() - 1);
 }
 
 ChatScene::~ChatScene() {
-
 }
 
 void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) {
   Q_UNUSED(index);
-  // maybe make this more efficient by prepending stuff with negative yval
-  // dunno if that's worth not guranteeing that 0 is on the top...
-  // TODO bulk inserts, iterators
+
+  clearWebPreview();
+
+//   QModelIndex sidx = model()->index(start, 0);
+//   QModelIndex eidx = model()->index(end, 0);
+//   qDebug() << "rowsInserted" << start << end << "-" << sidx.data(MessageModel::MsgIdRole).value<MsgId>() << eidx.data(MessageModel::MsgIdRole).value<MsgId>();
+
   qreal h = 0;
-  qreal y = 0;
-  if(_width && start > 0) y = _lines.value(start - 1)->y() + _lines.value(start - 1)->height();
+  qreal y = _sceneRect.y();
+  qreal width = _sceneRect.width();
+  bool atTop = true;
+  bool atBottom = false;
+  bool moveTop = false;
+
+  if(start > 0 && start < _lines.count()) {
+    y = _lines.value(start)->y();
+    atTop = false;
+  }
+  if(start == _lines.count()) {
+    y = _sceneRect.bottom();
+    atTop = false;
+    atBottom = true;
+  }
+
+  qreal contentsWidth = width - secondColumnHandle()->sceneRight();
+  qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight();
+  qreal timestampWidth = firstColumnHandle()->sceneLeft();
+  QPointF contentsPos(secondColumnHandle()->sceneRight(), 0);
+  QPointF senderPos(firstColumnHandle()->sceneRight(), 0);
+
   for(int i = start; i <= end; i++) {
-    ChatLine *line = new ChatLine(i, model());
-    _lines.insert(i, line);
-    addItem(line);
-    if(_width > 0) {
+    ChatLine *line = new ChatLine(i, model(),
+				  width,
+				  timestampWidth, senderWidth, contentsWidth,
+				  senderPos, contentsPos);
+    if(atTop) {
+      h += line->height();
+      line->setPos(0, y-h);
+    } else {
       line->setPos(0, y+h);
-      h += line->setGeometry(_width, firstColHandlePos, secondColHandlePos);
+      h += line->height();
     }
+    _lines.insert(i, line);
+    addItem(line);
   }
+
   // update existing items
   for(int i = end+1; i < _lines.count(); i++) {
     _lines[i]->setRow(i);
@@ -120,41 +152,178 @@ void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) {
     if(_lastSelectionRow >= start) _lastSelectionRow += offset;
   }
 
-  if(h > 0) {
-    _height += h;
-    for(int i = end+1; i < _lines.count(); i++) {
-      _lines.value(i)->moveBy(0, h);
+  // neither pre- or append means we have to do dirty work: move items...
+  if(!(atTop || atBottom)) {
+    qreal offset = h;
+    int moveStart = 0;
+    int moveEnd = _lines.count() - 1;
+    // move top means: moving 0 to end (aka: end + 1)
+    // move top means: moving end + 1 to _lines.count() - 1 (aka: _lines.count() - (end + 1)
+    if(end + 1 < _lines.count() - end - 1) {
+      // move top part
+      moveTop = true;
+      offset = -offset;
+      moveEnd = end;
+    } else {
+      // move bottom part
+      moveStart = start;
+    }
+    ChatLine *line = 0;
+    for(int i = moveStart; i <= moveEnd; i++) {
+      line = _lines.at(i);
+      line->setPos(0, line->pos().y() + offset);
     }
-    setSceneRect(QRectF(0, 0, _width, _height));
-    emit heightChanged(_height);
   }
-}
 
-void ChatScene::modelReset() {
-  foreach(ChatLine *line, _lines) {
-    removeItem(line);
-    delete line;
+  if(!atBottom) {
+    if(start < _firstLineRow) {
+      int prevFirstLineRow = _firstLineRow + (end - start + 1);
+      for(int i = end + 1; i < prevFirstLineRow; i++) {
+	_lines.at(i)->show();
+      }
+    }
+    // force new search for first proper line
+    _firstLineRow = -1;
+  }
+  updateSceneRect();
+  if(atBottom) {
+    emit lastLineChanged(_lines.last());
   }
-  _lines.clear();
-  setSceneRect(QRectF(0, 0, _width, 0));
-  emit heightChanged(0);
+
 }
 
-void ChatScene::setWidth(qreal w) {
-  _width = w;
-  _height = 0;
-  foreach(ChatLine *line, _lines) {
-    line->setPos(0, _height);
-    _height += line->setGeometry(_width, firstColHandlePos, secondColHandlePos);
+void ChatScene::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) {
+  Q_UNUSED(parent);
+
+  clearWebPreview();
+
+  qreal h = 0; // total height of removed items;
+
+  bool atTop = (start == 0);
+  bool atBottom = (end == _lines.count() - 1);
+  bool moveTop = false;
+
+  // remove items from scene
+  QList<ChatLine *>::iterator lineIter = _lines.begin() + start;
+  int lineCount = start;
+  while(lineIter != _lines.end() && lineCount <= end) {
+    h += (*lineIter)->height();
+    delete *lineIter;
+    lineIter = _lines.erase(lineIter);
+    lineCount++;
+  }
+
+  // update rows of remaining chatlines
+  for(int i = start; i < _lines.count(); i++) {
+    _lines.at(i)->setRow(i);
+  }
+
+  // update selection
+  if(_selectionStart >= 0) {
+    int offset = end - start + 1;
+    if(_selectionStart >= start)
+      _selectionStart -= offset;
+    if(_selectionEnd >= start)
+      _selectionEnd -= offset;
+    if(_firstSelectionRow >= start)
+      _firstSelectionRow -= offset;
+    if(_lastSelectionRow >= start)
+      _lastSelectionRow -= offset;
+  }
+
+  // neither removing at bottom or top means we have to move items...
+  if(!(atTop || atBottom)) {
+    qreal offset = h;
+    int moveStart = 0;
+    int moveEnd = _lines.count() - 1;
+    if(start < _lines.count() - start) {
+      // move top part
+      moveTop = true;
+      moveEnd = start - 1;
+    } else {
+      // move bottom part
+      moveStart = start;
+      offset = -offset;
+    }
+    ChatLine *line = 0;
+    for(int i = moveStart; i <= moveEnd; i++) {
+      line = _lines.at(i);
+      line->setPos(0, line->pos().y() + offset);
+    }
   }
-  setSceneRect(QRectF(0, 0, w, _height));
-  secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
-  emit heightChanged(_height);
+
+
+  // update sceneRect
+  // when searching for the first non-date-line we have to take into account that our
+  // model still contains the just removed lines so we cannot simply call updateSceneRect()
+  int numRows = model()->rowCount();
+  QModelIndex firstLineIdx;
+  _firstLineRow = -1;
+  bool needOffset = false;
+  do {
+    _firstLineRow++;
+    if(_firstLineRow >= start && _firstLineRow <= end) {
+      _firstLineRow = end + 1;
+      needOffset = true;
+    }
+    firstLineIdx = model()->index(_firstLineRow, 0);
+  } while((Message::Type)(model()->data(firstLineIdx, MessageModel::TypeRole).toInt()) == Message::DayChange && _firstLineRow < numRows);
+
+  if(needOffset)
+    _firstLineRow -= end - start + 1;
+  updateSceneRect();
 }
 
-void ChatScene::rectChanged(const QRectF &rect) {
-  firstColHandle->sceneRectChanged(rect);
-  secondColHandle->sceneRectChanged(rect);
+void ChatScene::updateForViewport(qreal width, qreal height) {
+  _viewportHeight = height;
+  setWidth(width);
+}
+
+// setWidth is used for 2 things:
+//  a) updating the scene to fit the width of the corresponding view
+//  b) to update the positions of the items if a columhandle has changed it's position
+// forceReposition is true in the second case
+// this method features some codeduplication for the sake of performance
+void ChatScene::setWidth(qreal width, bool forceReposition) {
+  if(width == _sceneRect.width() && !forceReposition)
+    return;
+
+//   clock_t startT = clock();
+
+  qreal linePos = _sceneRect.y() + _sceneRect.height();
+  QList<ChatLine *>::iterator lineIter = _lines.end();
+  QList<ChatLine *>::iterator lineIterBegin = _lines.begin();
+  ChatLine *line = 0;
+  qreal lineHeight = 0;
+  qreal contentsWidth = width - secondColumnHandle()->sceneRight();
+
+  if(forceReposition) {
+    qreal timestampWidth = firstColumnHandle()->sceneLeft();
+    qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight();
+    QPointF senderPos(firstColumnHandle()->sceneRight(), 0);
+    QPointF contentsPos(secondColumnHandle()->sceneRight(), 0);
+    while(lineIter != lineIterBegin) {
+      lineIter--;
+      line = *lineIter;
+      lineHeight = line->setColumns(timestampWidth, senderWidth, contentsWidth, senderPos, contentsPos);
+      linePos -= lineHeight;
+      line->setPos(0, linePos);
+    }
+  } else {
+    while(lineIter != lineIterBegin) {
+      lineIter--;
+      line = *lineIter;
+      lineHeight = line->setGeometryByWidth(width, contentsWidth);
+      linePos -= lineHeight;
+      line->setPos(0, linePos);
+    }
+  }
+
+  updateSceneRect(width);
+  setHandleXLimits();
+
+//   clock_t endT = clock();
+//   qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec";
 }
 
 void ChatScene::handlePositionChanged(qreal xpos) {
@@ -167,16 +336,24 @@ void ChatScene::handlePositionChanged(qreal xpos) {
     oldx = secondColHandlePos;
     secondColHandlePos = xpos;
   }
-  QtUiSettings s;
-  s.setValue(QString("ChatView/%1/FirstColumnHandlePos").arg(_idString), firstColHandlePos);
-  s.setValue(QString("ChatView/%1/SecondColumnHandlePos").arg(_idString), secondColHandlePos);
-  s.setValue(QString("ChatView/DefaultFirstColumnHandlePos"), firstColHandlePos);
-  s.setValue(QString("ChatView/DefaultSecondColumnHandlePos"), secondColHandlePos);
 
-  setWidth(width());  // readjust all chatlines
+  ChatViewSettings viewSettings(this);
+  viewSettings.setValue("FirstColumnHandlePos", firstColHandlePos);
+  viewSettings.setValue("SecondColumnHandlePos", secondColHandlePos);
+
+  ChatViewSettings defaultSettings;
+  defaultSettings.setValue("FirstColumnHandlePos", firstColHandlePos);
+  defaultSettings.setValue("SecondColumnHandlePos", secondColHandlePos);
+
+  setWidth(width(), true);  // readjust all chatlines
   // we get ugly redraw errors if we don't update this explicitly... :(
   // width() should be the same for both handles, so just use firstColHandle regardless
-  update(qMin(oldx, xpos) - firstColHandle->width()/2, 0, qMax(oldx, xpos) + firstColHandle->width()/2, height());
+  //update(qMin(oldx, xpos), 0, qMax(oldx, xpos) + firstColHandle->width(), height());
+}
+
+void ChatScene::setHandleXLimits() {
+  firstColHandle->setXLimits(0, secondColHandle->sceneLeft());
+  secondColHandle->setXLimits(firstColHandle->sceneRight(), width() - minContentsWidth);
 }
 
 void ChatScene::setSelectingItem(ChatItem *item) {
@@ -195,12 +372,12 @@ void ChatScene::startGlobalSelection(ChatItem *item, const QPointF &itemPos) {
 void ChatScene::updateSelection(const QPointF &pos) {
   // This is somewhat hacky... we look at the contents item that is at the cursor's y position (ignoring x), since
   // it has the full height. From this item, we can then determine the row index and hence the ChatLine.
-  ChatItem *contentItem = static_cast<ChatItem *>(itemAt(QPointF(secondColHandlePos + secondColHandle->width()/2, pos.y())));
+  ChatItem *contentItem = static_cast<ChatItem *>(itemAt(QPointF(secondColHandle->sceneRight() + 1, pos.y())));
   if(!contentItem) return;
 
   int curRow = contentItem->row();
   int curColumn;
-  if(pos.x() > secondColHandlePos + secondColHandle->width()/2) curColumn = ChatLineModel::ContentsColumn;
+  if(pos.x() > secondColHandle->sceneRight()) curColumn = ChatLineModel::ContentsColumn;
   else if(pos.x() > firstColHandlePos) curColumn = ChatLineModel::SenderColumn;
   else curColumn = ChatLineModel::TimestampColumn;
 
@@ -235,10 +412,12 @@ void ChatScene::updateSelection(const QPointF &pos) {
   _lastSelectionRow = curRow;
 
   if(newstart == newend && minColumn == ChatLineModel::ContentsColumn) {
+    if(!_selectingItem) {
+      qWarning() << "WARNING: ChatScene::updateSelection() has a null _selectingItem, this should never happen! Please report.";
+      return;
+    }
     _lines[curRow]->setSelected(false);
     _isSelecting = false;
-    Q_ASSERT(_selectingItem); // this seems to not always be true, but I have no idea why
-                              // adding this assert to make sure the occasional segfault is caused by this
     _selectingItem->continueSelecting(_selectingItem->mapFromScene(pos));
   }
 }
@@ -258,7 +437,7 @@ void ChatScene::mousePressEvent(QGraphicsSceneMouseEvent *event) {
       _lines[l]->setSelected(false);
     }
     _selectionStart = -1;
-    event->accept();
+    QGraphicsScene::mousePressEvent(event);  // so we can start a new local selection
   } else {
     QGraphicsScene::mousePressEvent(event);
   }
@@ -306,10 +485,13 @@ QString ChatScene::selectionToString() const {
 }
 
 void ChatScene::requestBacklog() {
-  static const int REQUEST_COUNT = 50;
+  static const int REQUEST_COUNT = 500;
   int backlogSize = model()->rowCount();
   if(isSingleBufferScene() && backlogSize != 0 && _lastBacklogSize + REQUEST_COUNT <= backlogSize) {
     QModelIndex msgIdx = model()->index(0, 0);
+    while((Message::Type)(model()->data(msgIdx, ChatLineModel::TypeRole).toInt()) == Message::DayChange) {
+      msgIdx = msgIdx.sibling(msgIdx.row() + 1, 0);
+    }
     MsgId msgId = model()->data(msgIdx, ChatLineModel::MsgIdRole).value<MsgId>();
     BufferId bufferId = model()->data(msgIdx, ChatLineModel::BufferIdRole).value<BufferId>();
     _lastBacklogSize = backlogSize;
@@ -318,10 +500,102 @@ void ChatScene::requestBacklog() {
 }
 
 int ChatScene::sectionByScenePos(int x) {
-  if(x < firstColHandlePos)
+  if(x < firstColHandle->x())
     return ChatLineModel::TimestampColumn;
-  if(x < secondColHandlePos)
+  if(x < secondColHandle->x())
     return ChatLineModel::SenderColumn;
 
   return ChatLineModel::ContentsColumn;
 }
+
+void ChatScene::updateSceneRect() {
+  if(_lines.isEmpty()) {
+    updateSceneRect(QRectF(0, 0, _sceneRect.width(), 0));
+    return;
+  }
+
+  // we hide day change messages at the top by making the scene rect smaller
+  // and by calling QGraphicsItem::hide() on all leading day change messages
+  // the first one is needed to ensure proper scrollbar ranges
+  // the second for cases where the viewport is larger then the set scenerect
+  //  (in this case the items are shown anyways)
+  if(_firstLineRow == -1) {
+    int numRows = model()->rowCount();
+    _firstLineRow = 0;
+    QModelIndex firstLineIdx;
+    while(_firstLineRow < numRows) {
+      firstLineIdx = model()->index(_firstLineRow, 0);
+      if((Message::Type)(model()->data(firstLineIdx, MessageModel::TypeRole).toInt()) != Message::DayChange)
+	break;
+      _lines.at(_firstLineRow)->hide();
+      _firstLineRow++;
+    }
+  }
+
+  // the following call should be safe. If it crashes something went wrong during insert/remove
+  ChatLine *firstLine = _lines.at(_firstLineRow);
+  ChatLine *lastLine = _lines.last();
+  updateSceneRect(QRectF(0, firstLine->pos().y(), _sceneRect.width(), lastLine->pos().y() + lastLine->height() - firstLine->pos().y()));
+}
+
+void ChatScene::updateSceneRect(qreal width) {
+  _sceneRect.setWidth(width);
+  updateSceneRect();
+}
+
+void ChatScene::updateSceneRect(const QRectF &rect) {
+  _sceneRect = rect;
+  setSceneRect(rect);
+}
+
+
+void ChatScene::loadWebPreview(ChatItem *parentItem, const QString &url, const QRectF &urlRect) {
+#ifndef HAVE_WEBKIT
+  Q_UNUSED(parentItem)
+  Q_UNUSED(url)
+  Q_UNUSED(urlRect)
+#else
+  if(webPreview.parentItem != parentItem)
+    webPreview.parentItem = parentItem;
+
+  if(webPreview.url != url) {
+    webPreview.url = url;
+    // load a new web view and delete the old one (if exists)
+    if(webPreview.previewItem) {
+      removeItem(webPreview.previewItem);
+      delete webPreview.previewItem;
+    }
+    webPreview.previewItem = new WebPreviewItem(url);
+    addItem(webPreview.previewItem);
+  }
+  if(webPreview.urlRect != urlRect) {
+    webPreview.urlRect = urlRect;
+    qreal previewY = urlRect.bottom();
+    qreal previewX = urlRect.x();
+    if(previewY + webPreview.previewItem->boundingRect().height() > sceneRect().bottom())
+      previewY = urlRect.y() - webPreview.previewItem->boundingRect().height();
+
+    if(previewX + webPreview.previewItem->boundingRect().width() > sceneRect().width())
+      previewX = sceneRect().right() - webPreview.previewItem->boundingRect().width();
+
+    webPreview.previewItem->setPos(previewX, previewY);
+  }
+#endif
+}
+
+void ChatScene::clearWebPreview(ChatItem *parentItem) {
+#ifndef HAVE_WEBKIT
+  Q_UNUSED(parentItem)
+#else
+  if(parentItem == 0 || webPreview.parentItem == parentItem) {
+    if(webPreview.previewItem) {
+      removeItem(webPreview.previewItem);
+      delete webPreview.previewItem;
+      webPreview.previewItem = 0;
+    }
+    webPreview.parentItem = 0;
+    webPreview.url = QString();
+    webPreview.urlRect = QRectF();
+  }
+#endif
+}