Quassel now handles even huge ChatScenes without slowing to a crawl.

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

diff --git a/src/qtui/chatscene.cpp b/src/qtui/chatscene.cpp
index 8914540..73d0bc8 100644 (file)
--- a/src/qtui/chatscene.cpp
+++ b/src/qtui/chatscene.cpp
@@ -1,11 +1,11 @@
 /***************************************************************************
- *   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  *
  *   it under the terms of the GNU General Public License as published by  *
  *   the Free Software Foundation; either version 2 of the License, or     *
- *   (at your option) any later version.                                   *
+ *   (at your option) version 3.                                           *
  *                                                                         *
  *   This program is distributed in the hope that it will be useful,       *
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
@@ -19,21 +19,25 @@
  ***************************************************************************/
 
 #include <QGraphicsSceneMouseEvent>
+#include <QPersistentModelIndex>
 
 #include "buffer.h"
 #include "chatitem.h"
-#include "chatline.h"
+#include "chatlinemodelitem.h"
 #include "chatscene.h"
 #include "quasselui.h"
 
-ChatScene::ChatScene(Buffer *buf, QObject *parent) : QGraphicsScene(parent) {
-  _buffer = buf;
-
-  foreach(AbstractUiMsg *msg, buf->contents()) {
-    appendMsg(msg);
+ChatScene::ChatScene(MessageModel *model, QObject *parent) : QGraphicsScene(parent), _model(model) {
+  _width = 0;
+  _timestampWidth = 60;
+  _senderWidth = 80;
+  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 *)));
+  emit heightChanged(height());
 }
 
 ChatScene::~ChatScene() {
@@ -41,24 +45,44 @@ 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
+  int h = 0;
+  int 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->setColumnWidths(_timestampWidth, _senderWidth, _width - _timestampWidth - _senderWidth);
+    }
+  }
+  if(h > 0) {
+    _height += h;
+    for(int i = end+1; i < _lines.count(); i++) {
+      _lines.value(i)->moveBy(0, h);
+    }
+    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(int w) {
+  _width = w;
+  _height = 0;
+  foreach(ChatLine *line, _lines) {
+    line->setPos(0, _height);
+    _height += line->setColumnWidths(_timestampWidth, _senderWidth, w - _timestampWidth - _senderWidth);
+  }
+  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()));
@@ -66,4 +90,5 @@ void ChatScene::mousePressEvent ( QGraphicsSceneMouseEvent * mouseEvent ) {
   if(line) {
     line->myMousePressEvent(mouseEvent);
   } else  QGraphicsScene::mousePressEvent(mouseEvent);
+  */
 }