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Deactivate selections on click
[quassel.git] / src / qtui / chatscene.cpp
diff --git a/src/qtui/chatscene.cpp b/src/qtui/chatscene.cpp
index 306ffb3..0671365 100644 (file)
--- a/src/qtui/chatscene.cpp
+++ b/src/qtui/chatscene.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
 /***************************************************************************
- *   Copyright (C) 2005-07 by the Quassel IRC Team                         *
+ *   Copyright (C) 2005-08 by the Quassel Project                          *
  *   devel@quassel-irc.org                                                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   devel@quassel-irc.org                                                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -19,21 +19,57 @@
  ***************************************************************************/
 
 #include <QGraphicsSceneMouseEvent>
  ***************************************************************************/
 
 #include <QGraphicsSceneMouseEvent>
+#include <QPersistentModelIndex>
 
 #include "buffer.h"
 #include "chatitem.h"
 
 #include "buffer.h"
 #include "chatitem.h"
-#include "chatline.h"
+#include "chatlinemodelitem.h"
 #include "chatscene.h"
 #include "chatscene.h"
-#include "quasselui.h"
+#include "columnhandleitem.h"
+#include "qtui.h"
+#include "qtuisettings.h"
 
 
-ChatScene::ChatScene(Buffer *buf, QObject *parent) : QGraphicsScene(parent) {
-  _buffer = buf;
+const qreal minContentsWidth = 200;
 
 
-  foreach(AbstractUiMsg *msg, buf->contents()) {
-    appendMsg(msg);
+ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, QObject *parent)
+  : QGraphicsScene(parent),
+  _idString(idString),
+  _model(model)
+{
+  _width = 0;
+  _selectingItem = 0;
+  _isSelecting = false;
+  _selectionStart = -1;
+  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)));
+  for(int i = 0; i < model->rowCount(); i++) {
+    ChatLine *line = new ChatLine(model->index(i, 0));
+    _lines.append(line);
+    addItem(line);
   }
   }
-  connect(buf, SIGNAL(msgAppended(AbstractUiMsg *)), this, SLOT(appendMsg(AbstractUiMsg *)));
-  connect(buf, SIGNAL(msgPrepended(AbstractUiMsg *)), this, SLOT(prependMsg(AbstractUiMsg *)));
+
+  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);
+
+  connect(firstColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
+  connect(secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
+
+  firstColHandle->setXPos(firstColHandlePos);
+  firstColHandle->setXLimits(0, secondColHandlePos);
+  secondColHandle->setXPos(secondColHandlePos);
+  secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
+
+  emit heightChanged(height());
 }
 
 ChatScene::~ChatScene() {
 }
 
 ChatScene::~ChatScene() {
@@ -41,29 +77,158 @@ ChatScene::~ChatScene() {
 
 }
 
 
 }
 
-void ChatScene::appendMsg(AbstractUiMsg * msg) {
-  ChatLine *line = dynamic_cast<ChatLine*>(msg);
-  Q_ASSERT(line);
-  _lines.append(line);
-  addItem(line);
-  line->setPos(0, _lines.count() * 30);
-  line->setColumnWidths(80, 80, 400);
+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
+  qreal h = 0;
+  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));
+    _lines.insert(i, line);
+    addItem(line);
+    if(_width > 0) {
+      line->setPos(0, y+h);
+      h += line->setGeometry(_width, firstColHandlePos, secondColHandlePos);
+    }
+  }
+  if(h > 0) {
+    _height += h;
+    for(int i = end+1; i < _lines.count(); i++) {
+      _lines.value(i)->moveBy(0, h);
+    }
+    setSceneRect(QRectF(0, 0, _width, _height));
+    emit heightChanged(_height);
+  }
 }
 
 }
 
-void ChatScene::prependMsg(AbstractUiMsg * msg) {
-  ChatLine *line = dynamic_cast<ChatLine*>(msg);
-  Q_ASSERT(line); qDebug() << "prepending";
-  _lines.prepend(line);
-  addItem(line);
-  line->setPos(0, _lines.count() * 30);
+void ChatScene::setWidth(qreal w) {
+  _width = w;
+  _height = 0;
+  foreach(ChatLine *line, _lines) {
+    line->setPos(0, _height);
+    _height += line->setGeometry(_width, firstColHandlePos, secondColHandlePos);
+  }
+  setSceneRect(QRectF(0, 0, w, _height));
+  secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
+  emit heightChanged(_height);
 }
 
 }
 
-void ChatScene::mousePressEvent ( QGraphicsSceneMouseEvent * mouseEvent ) {
-  qDebug() << "recv" << mouseEvent->scenePos();
-  ChatLine *line = static_cast<ChatLine*>(itemAt(mouseEvent->scenePos()));
-  ChatItem *item = static_cast<ChatItem*>(itemAt(mouseEvent->scenePos()));
-  qDebug() << (void*)line << (void*)item;
-  if(line) {
-    line->myMousePressEvent(mouseEvent);
-  } else  QGraphicsScene::mousePressEvent(mouseEvent);
+void ChatScene::rectChanged(const QRectF &rect) {
+  firstColHandle->sceneRectChanged(rect);
+  secondColHandle->sceneRectChanged(rect);
 }
 }
+
+void ChatScene::handlePositionChanged(qreal xpos) {
+  bool first = (sender() == firstColHandle);
+  qreal oldx;
+  if(first) {
+    oldx = firstColHandlePos;
+    firstColHandlePos = xpos;
+  } else {
+    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
+  // 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());
+}
+
+void ChatScene::setSelectingItem(ChatItem *item) {
+  if(_selectingItem) _selectingItem->clearSelection();
+  _selectingItem = item;
+}
+
+void ChatScene::startGlobalSelection(ChatItem *item, const QPointF &itemPos) {
+  _selectionStart = _selectionEnd = item->index().row();
+  _selectionStartCol = _selectionMinCol = item->index().column();
+  _isSelecting = true;
+  _lines[_selectionStart]->setSelected(true, (ChatLineModel::ColumnType)_selectionMinCol);
+  updateSelection(item->mapToScene(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())));
+  if(!contentItem) return;
+
+  int curRow = contentItem->index().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);
+    }
+  }
+
+  if(curRow > _selectionEnd && curRow > _selectionStart) {  // select further towards bottom
+    for(int l = _selectionEnd + 1; l <= curRow; l++) {
+      _lines[l]->setSelected(true, minColumn);
+    }
+  } else if(curRow > _selectionEnd && curRow <= _selectionStart) { // deselect towards bottom
+    for(int l = _selectionEnd; l < curRow; l++) {
+      _lines[l]->setSelected(false);
+    }
+  } else if(curRow < _selectionEnd && curRow >= _selectionStart) {
+    for(int l = _selectionEnd; l > curRow; l--) {
+      _lines[l]->setSelected(false);
+    }
+  } else if(curRow < _selectionEnd && curRow < _selectionStart) {
+    for(int l = _selectionEnd - 1; l >= curRow; l--) {
+      _lines[l]->setSelected(true, minColumn);
+    }
+  }
+  _selectionEnd = curRow;
+
+  if(curRow == _selectionStart && minColumn == ChatLineModel::ContentsColumn) {
+    _lines[curRow]->setSelected(false);
+    _isSelecting = false;
+    _selectingItem->continueSelecting(_selectingItem->mapFromScene(pos));
+  }
+}
+
+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) {
+    _isSelecting = false;
+    event->accept();
+  } else {
+    QGraphicsScene::mouseReleaseEvent(event);
+  }
+}
+
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