X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fqtui%2Fchatview.cpp;h=3c7d8cf9d59ea24d4bc8275a170b54e9a73c73d6;hp=02d61b261bf766142fcedb1dca6f06a6b6b467e8;hb=9fb25d34cfc4dee02159b112c72e018c6e26e63f;hpb=e920325766f65e66132c20e4cb1da8f8e3f5e030

diff --git a/src/qtui/chatview.cpp b/src/qtui/chatview.cpp
index 02d61b26..3c7d8cf9 100644
--- a/src/qtui/chatview.cpp
+++ b/src/qtui/chatview.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2005-08 by the Quassel Project                          *
+ *   Copyright (C) 2005-09 by the Quassel Project                          *
  *   devel@quassel-irc.org                                                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -19,18 +19,23 @@
  ***************************************************************************/
 
 #include <QGraphicsTextItem>
+#include <QKeyEvent>
+#include <QMenu>
 #include <QScrollBar>
 
-#include "chatlinemodelitem.h"
+#include "bufferwidget.h"
 #include "chatscene.h"
 #include "chatview.h"
 #include "client.h"
 #include "messagefilter.h"
-#include "quasselui.h"
+#include "qtui.h"
+#include "qtuistyle.h"
 
 ChatView::ChatView(BufferId bufferId, QWidget *parent)
   : QGraphicsView(parent),
-    AbstractChatView()
+    AbstractChatView(),
+    _bufferContainer(0),
+    _currentScaleFactor(1)
 {
   QList<BufferId> filterList;
   filterList.append(bufferId);
@@ -40,7 +45,9 @@ ChatView::ChatView(BufferId bufferId, QWidget *parent)
 
 ChatView::ChatView(MessageFilter *filter, QWidget *parent)
   : QGraphicsView(parent),
-    AbstractChatView()
+    AbstractChatView(),
+    _bufferContainer(0),
+    _currentScaleFactor(1)
 {
   init(filter);
 }
@@ -49,25 +56,98 @@ void ChatView::init(MessageFilter *filter) {
   setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
   setAlignment(Qt::AlignBottom);
   setInteractive(true);
+  //setOptimizationFlags(QGraphicsView::DontClipPainter | QGraphicsView::DontAdjustForAntialiasing);
+  // setOptimizationFlags(QGraphicsView::DontAdjustForAntialiasing);
+  setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
+  // setTransformationAnchor(QGraphicsView::NoAnchor);
+  setTransformationAnchor(QGraphicsView::AnchorViewCenter);
 
-  _scene = new ChatScene(filter, filter->idString(), this);
-  connect(_scene, SIGNAL(heightChangedAt(qreal, qreal)), this, SLOT(sceneHeightChangedAt(qreal, qreal)));
+  _scrollTimer.setInterval(100);
+  _scrollTimer.setSingleShot(true);
+  connect(&_scrollTimer, SIGNAL(timeout()), SLOT(scrollTimerTimeout()));
+
+  _scene = new ChatScene(filter, filter->idString(), viewport()->width() - 4, this); // see below: resizeEvent()
+  connect(_scene, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(sceneRectChanged(const QRectF &)));
+  connect(_scene, SIGNAL(lastLineChanged(QGraphicsItem *, qreal)), this, SLOT(lastLineChanged(QGraphicsItem *, qreal)));
+  connect(_scene, SIGNAL(mouseMoveWhileSelecting(const QPointF &)), this, SLOT(mouseMoveWhileSelecting(const QPointF &)));
   setScene(_scene);
 
-  _lastScrollbarPos = 0;
   connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(verticalScrollbarChanged(int)));
+  connect(QtUi::style(), SIGNAL(changed()), this, SLOT(styleChanged()));
+}
+
+bool ChatView::event(QEvent *event) {
+  if(event->type() == QEvent::KeyPress) {
+    QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
+    switch(keyEvent->key()) {
+    case Qt::Key_Up:
+    case Qt::Key_Down:
+    case Qt::Key_PageUp:
+    case Qt::Key_PageDown:
+      if(!verticalScrollBar()->isVisible()) {
+	scene()->requestBacklog();
+	return true;
+      }
+    default:
+      break;
+    }
+  }
+
+  if(event->type() == QEvent::Wheel) {
+    if(!verticalScrollBar()->isVisible()) {
+      scene()->requestBacklog();
+      return true;
+    }
+  }
+
+  return QGraphicsView::event(event);
 }
 
 void ChatView::resizeEvent(QResizeEvent *event) {
-  scene()->setWidth(event->size().width() - 2);  // FIXME figure out why we have to hardcode the -2 here
+  QGraphicsView::resizeEvent(event);
+
+  // we can reduce viewport updates if we scroll to the bottom allready at the beginning
+  verticalScrollBar()->setValue(verticalScrollBar()->maximum());
+
+  // FIXME: without the hardcoded -4 Qt reserves space for a horizontal scrollbar even though it's disabled permanently.
+  // this does only occur on QtX11 (at least not on Qt for Mac OS). Seems like a Qt Bug.
+  scene()->updateForViewport(viewport()->width() - 4, viewport()->height());
+
+  _lastScrollbarPos = verticalScrollBar()->maximum();
   verticalScrollBar()->setValue(verticalScrollBar()->maximum());
 }
 
-void ChatView::sceneHeightChangedAt(qreal ypos, qreal hdiff) {
-  setSceneRect(scene()->sceneRect());
-  int y = mapFromScene(0, ypos).y();
-  if(y <= viewport()->height() + 2) {  // be a bit tolerant here, also FIXME (why we need the 2px?)
-    verticalScrollBar()->setValue(verticalScrollBar()->value() + hdiff);
+void ChatView::mouseMoveWhileSelecting(const QPointF &scenePos) {
+  int y = (int)mapFromScene(scenePos).y();
+  _scrollOffset = 0;
+  if(y < 0)
+    _scrollOffset = y;
+  else if(y > height())
+    _scrollOffset = y - height();
+
+  if(_scrollOffset && !_scrollTimer.isActive())
+    _scrollTimer.start();
+}
+
+void ChatView::scrollTimerTimeout() {
+  // scroll view
+  QAbstractSlider *vbar = verticalScrollBar();
+  if(_scrollOffset < 0 && vbar->value() > 0)
+    vbar->setValue(qMax(vbar->value() + _scrollOffset, 0));
+  else if(_scrollOffset > 0 && vbar->value() < vbar->maximum())
+    vbar->setValue(qMin(vbar->value() + _scrollOffset, vbar->maximum()));
+}
+
+void ChatView::lastLineChanged(QGraphicsItem *chatLine, qreal offset) {
+  Q_UNUSED(chatLine)
+  // disabled until further testing/discussion
+  //if(!scene()->isScrollingAllowed())
+  //  return;
+
+  QAbstractSlider *vbar = verticalScrollBar();
+  Q_ASSERT(vbar);
+  if(vbar->maximum() - vbar->value() <= (offset + 5) * _currentScaleFactor ) { // 5px grace area
+    vbar->setValue(vbar->maximum());
   }
 }
 
@@ -75,6 +155,7 @@ void ChatView::verticalScrollbarChanged(int newPos) {
   QAbstractSlider *vbar = verticalScrollBar();
   Q_ASSERT(vbar);
 
+  // check for backlog request
   if(newPos < _lastScrollbarPos) {
     int relativePos = 100;
     if(vbar->maximum() - vbar->minimum() != 0)
@@ -85,6 +166,16 @@ void ChatView::verticalScrollbarChanged(int newPos) {
     }
   }
   _lastScrollbarPos = newPos;
+
+  // FIXME: Fugly workaround for the ChatView scrolling up 1px on buffer switch
+  if(vbar->maximum() - newPos <= 2)
+    vbar->setValue(vbar->maximum());
+}
+
+void ChatView::styleChanged() {
+  invalidateScene();
+  if(scene())
+    scene()->update();
 }
 
 MsgId ChatView::lastMsgId() const {
@@ -97,3 +188,30 @@ MsgId ChatView::lastMsgId() const {
 
   return model->data(model->index(model->rowCount() - 1, 0), MessageModel::MsgIdRole).value<MsgId>();
 }
+
+void ChatView::addActionsToMenu(QMenu *menu, const QPointF &pos) {
+  // zoom actions
+  BufferWidget *bw = qobject_cast<BufferWidget *>(bufferContainer());
+  if(bw) {
+    bw->addActionsToMenu(menu, pos);
+    menu->addSeparator();
+  }
+}
+
+void ChatView::zoomIn() {
+    _currentScaleFactor *= 1.2;
+    scale(1.2, 1.2);
+    scene()->setWidth(viewport()->width() / _currentScaleFactor - 2);
+}
+
+void ChatView::zoomOut() {
+    _currentScaleFactor /= 1.2;
+    scale(1 / 1.2, 1 / 1.2);
+    scene()->setWidth(viewport()->width() / _currentScaleFactor - 2);
+}
+
+void ChatView::zoomOriginal() {
+    scale(1/_currentScaleFactor, 1/_currentScaleFactor);
+    _currentScaleFactor = 1;
+    scene()->setWidth(viewport()->width() - 2);
+}