X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fqtui%2Fchatscene.cpp;h=33a13c516af89bbbed9ca14e930f6442836d4137;hp=e4a0bd7da2c69716aa70985006016fadebf71c37;hb=5b2f14be0d05db7c02ff0faa6513eb6b471994f0;hpb=1183bd403b16d86ef59503185b9ab4d35eb8c93f

diff --git a/src/qtui/chatscene.cpp b/src/qtui/chatscene.cpp
index e4a0bd7d..33a13c51 100644
--- a/src/qtui/chatscene.cpp
+++ b/src/qtui/chatscene.cpp
@@ -18,14 +18,19 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
+#include <QApplication>
+#include <QClipboard>
 #include <QGraphicsSceneMouseEvent>
 #include <QPersistentModelIndex>
 
-#include "buffer.h"
 #include "chatitem.h"
+#include "chatline.h"
 #include "chatlinemodelitem.h"
 #include "chatscene.h"
+#include "client.h"
+#include "clientbacklogmanager.h"
 #include "columnhandleitem.h"
+#include "messagefilter.h"
 #include "qtui.h"
 #include "qtuisettings.h"
 
@@ -33,16 +38,27 @@ const qreal minContentsWidth = 200;
 
 ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, QObject *parent)
   : QGraphicsScene(parent),
-  _idString(idString),
-  _model(model)
+    _idString(idString),
+    _width(0),
+    _height(0),
+    _model(model),
+    _singleBufferScene(false),
+    _selectingItem(0),
+    _selectionStart(-1),
+    _isSelecting(false),
+    _fetchingBacklog(false)
 {
-  _width = 0;
-  _selectingItem = 0;
+  MessageFilter *filter = qobject_cast<MessageFilter*>(model);
+  if(filter) {
+    _singleBufferScene = filter->isSingleBufferFilter();
+  }
+
   connect(this, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(rectChanged(const QRectF &)));
 
   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(model->index(i, 0));
+    ChatLine *line = new ChatLine(i, model);
     _lines.append(line);
     addItem(line);
   }
@@ -72,7 +88,6 @@ ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, QObject
 
 ChatScene::~ChatScene() {
 
-
 }
 
 void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) {
@@ -84,7 +99,7 @@ void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) {
   qreal y = 0;
   if(_width && start > 0) y = _lines.value(start - 1)->y() + _lines.value(start - 1)->height();
   for(int i = start; i <= end; i++) {
-    ChatLine *line = new ChatLine(model()->index(i, 0));
+    ChatLine *line = new ChatLine(i, model());
     _lines.insert(i, line);
     addItem(line);
     if(_width > 0) {
@@ -92,6 +107,20 @@ void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) {
       h += line->setGeometry(_width, firstColHandlePos, secondColHandlePos);
     }
   }
+  // update existing items
+  for(int i = end+1; i < _lines.count(); i++) {
+    _lines[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;
+  }
+
   if(h > 0) {
     _height += h;
     for(int i = end+1; i < _lines.count(); i++) {
@@ -100,6 +129,17 @@ void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) {
     setSceneRect(QRectF(0, 0, _width, _height));
     emit heightChanged(_height);
   }
+
+  requestBacklogIfNeeded();
+}
+
+void ChatScene::modelReset() {
+  foreach(ChatLine *line, _lines) {
+    removeItem(line);
+    delete line;
+  }
+  _lines.clear();
+  setSceneRect(QRectF(0, 0, _width, 0));
 }
 
 void ChatScene::setWidth(qreal w) {
@@ -141,22 +181,161 @@ void ChatScene::handlePositionChanged(qreal xpos) {
   update(qMin(oldx, xpos) - firstColHandle->width()/2, 0, qMax(oldx, xpos) + firstColHandle->width()/2, height());
 }
 
-void ChatScene::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
+void ChatScene::setSelectingItem(ChatItem *item) {
+  if(_selectingItem) _selectingItem->clearSelection();
+  _selectingItem = item;
+}
 
-  QGraphicsScene::mouseMoveEvent(event);
+void ChatScene::startGlobalSelection(ChatItem *item, const QPointF &itemPos) {
+  _selectionStart = _selectionEnd = _lastSelectionRow = _firstSelectionRow = item->row();
+  _selectionStartCol = _selectionMinCol = item->column();
+  _isSelecting = true;
+  _lines[_selectionStart]->setSelected(true, (ChatLineModel::ColumnType)_selectionMinCol);
+  updateSelection(item->mapToScene(itemPos));
 }
 
-void ChatScene::mousePressEvent(QGraphicsSceneMouseEvent *event) {
+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())));
+  if(!contentItem) return;
+
+  int curRow = contentItem->row();
+  int curColumn;
+  if(pos.x() > secondColHandlePos + secondColHandle->width()/2) curColumn = ChatLineModel::ContentsColumn;
+  else if(pos.x() > firstColHandlePos) curColumn = ChatLineModel::SenderColumn;
+  else curColumn = ChatLineModel::TimestampColumn;
+
+  ChatLineModel::ColumnType minColumn = (ChatLineModel::ColumnType)qMin(curColumn, _selectionStartCol);
+  if(minColumn != _selectionMinCol) {
+    _selectionMinCol = minColumn;
+    for(int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++) {
+      _lines[l]->setSelected(true, minColumn);
+    }
+  }
+  int newstart = qMin(curRow, _firstSelectionRow);
+  int newend = qMax(curRow, _firstSelectionRow);
+  if(newstart < _selectionStart) {
+    for(int l = newstart; l < _selectionStart; l++)
+      _lines[l]->setSelected(true, minColumn);
+  }
+  if(newstart > _selectionStart) {
+    for(int l = _selectionStart; l < newstart; l++)
+      _lines[l]->setSelected(false);
+  }
+  if(newend > _selectionEnd) {
+    for(int l = _selectionEnd+1; l <= newend; l++)
+      _lines[l]->setSelected(true, minColumn);
+  }
+  if(newend < _selectionEnd) {
+    for(int l = newend+1; l <= _selectionEnd; l++)
+      _lines[l]->setSelected(false);
+  }
+
+  _selectionStart = newstart;
+  _selectionEnd = newend;
+  _lastSelectionRow = curRow;
+
+  if(newstart == newend && minColumn == ChatLineModel::ContentsColumn) {
+    _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));
+  }
+}
 
-  QGraphicsScene::mousePressEvent(event);
+void ChatScene::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
+  if(_isSelecting && event->buttons() == Qt::LeftButton) {
+    updateSelection(event->scenePos());
+    event->accept();
+  } else {
+    QGraphicsScene::mouseMoveEvent(event);
+  }
+}
+
+void ChatScene::mousePressEvent(QGraphicsSceneMouseEvent *event) {
+  if(event->buttons() == Qt::LeftButton && _selectionStart >= 0) {
+    for(int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++) {
+      _lines[l]->setSelected(false);
+    }
+    _selectionStart = -1;
+    event->accept();
+  } else {
+    QGraphicsScene::mousePressEvent(event);
+  }
 }
 
 void ChatScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
+  if(_isSelecting && !event->buttons() & Qt::LeftButton) {
+    putToClipboard(selectionToString());
+    _isSelecting = false;
+    event->accept();
+  } else {
+    QGraphicsScene::mouseReleaseEvent(event);
+  }
+}
 
-  QGraphicsScene::mouseReleaseEvent(event);
+void ChatScene::putToClipboard(const QString &selection) {
+  // TODO Configure clipboards
+#   ifdef Q_WS_X11
+  QApplication::clipboard()->setText(selection, QClipboard::Selection);
+#   endif
+//# else
+  QApplication::clipboard()->setText(selection);
+//# endif
 }
 
-void ChatScene::setSelectingItem(ChatItem *item) {
-  if(_selectingItem) _selectingItem->clearSelection();
-  _selectingItem = item;
+//!\brief Convert current selection to human-readable string.
+QString ChatScene::selectionToString() const {
+  //TODO Make selection format configurable!
+  if(!_isSelecting) return QString();
+  int start = qMin(_selectionStart, _selectionEnd);
+  int end = qMax(_selectionStart, _selectionEnd);
+  if(start < 0 || end >= _lines.count()) {
+    qDebug() << "Invalid selection range:" << start << end;
+    return QString();
+  }
+  QString result;
+  for(int l = start; l <= end; l++) {
+    if(_selectionMinCol == ChatLineModel::TimestampColumn)
+      result += _lines[l]->item(ChatLineModel::TimestampColumn).data(MessageModel::DisplayRole).toString() + " ";
+    if(_selectionMinCol <= ChatLineModel::SenderColumn)
+      result += _lines[l]->item(ChatLineModel::SenderColumn).data(MessageModel::DisplayRole).toString() + " ";
+    result += _lines[l]->item(ChatLineModel::ContentsColumn).data(MessageModel::DisplayRole).toString() + "\n";
+  }
+  return result;
+}
+
+void ChatScene::setIsFetchingBacklog(bool fetch) {
+  if(!isBacklogFetchingEnabled()) return;
+
+  if(!fetch) {
+    _fetchingBacklog = false;
+  } else {
+    _fetchingBacklog = true;
+    requestBacklogIfNeeded();
+  }
+}
+
+void ChatScene::requestBacklogIfNeeded() {
+  const int REQUEST_COUNT = 50;
+
+  if(!isBacklogFetchingEnabled() || !isFetchingBacklog() || !model()->rowCount()) return;
+
+  MsgId msgId = model()->data(model()->index(0, 0), ChatLineModel::MsgIdRole).value<MsgId>();
+  if(!_lastBacklogOffset.isValid() || (msgId < _lastBacklogOffset && _lastBacklogSize + REQUEST_COUNT <= model()->rowCount())) {
+    Client::backlogManager()->requestBacklog(bufferForBacklogFetching(), REQUEST_COUNT, msgId.toInt());
+    _lastBacklogOffset = msgId;
+    _lastBacklogSize = model()->rowCount();
+  }
+}
+
+int ChatScene::sectionByScenePos(int x) {
+  if(x < firstColHandlePos)
+    return ChatLineModel::TimestampColumn;
+  if(x < secondColHandlePos)
+    return ChatLineModel::SenderColumn;
+
+  return ChatLineModel::ContentsColumn;
 }