ChatScene speed improvement. This might even fix the dreaded CPU bug!

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

diff --git a/src/qtui/columnhandleitem.cpp b/src/qtui/columnhandleitem.cpp
index 8f1f9a2..bfe6ee5 100644 (file)
--- a/src/qtui/columnhandleitem.cpp
+++ b/src/qtui/columnhandleitem.cpp
@@ -27,9 +27,12 @@
 #include <QPainter>
 #include <QPalette>
 
+#include <QDebug>
+
 ColumnHandleItem::ColumnHandleItem(qreal w, QGraphicsItem *parent)
   : QGraphicsItem(parent),
     _width(w),
+    _boundingRect(-_width/2, 0, _width, 0),
     _hover(0),
     _moving(false),
     _minXPos(0),
@@ -45,6 +48,9 @@ ColumnHandleItem::ColumnHandleItem(qreal w, QGraphicsItem *parent)
 
 void ColumnHandleItem::setXPos(qreal xpos) {
   setPos(xpos, 0);
+  QRectF sceneBRect = _boundingRect.translated(x(), 0);
+  _sceneLeft = sceneBRect.left();
+  _sceneRight = sceneBRect.right();
 }
 
 void ColumnHandleItem::setXLimits(qreal min, qreal max) {
@@ -55,8 +61,8 @@ void ColumnHandleItem::setXLimits(qreal min, qreal max) {
 }
 
 void ColumnHandleItem::sceneRectChanged(const QRectF &rect) {
-  if(rect.height() != boundingRect().height())
-    prepareGeometryChange();
+  prepareGeometryChange();
+  _boundingRect = QRectF(-_width/2, rect.y(), _width, rect.height());
 }
 
 void ColumnHandleItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
@@ -87,6 +93,9 @@ void ColumnHandleItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
   if(_moving) {
     _moving = false;
     setCursor(QCursor(Qt::OpenHandCursor));
+    QRectF sceneBRect = _boundingRect.translated(x(), 0);
+    _sceneLeft = sceneBRect.left();
+    _sceneRight = sceneBRect.right();
     emit positionChanged(x());
     event->accept();
   } else {
@@ -119,7 +128,7 @@ void ColumnHandleItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *
   Q_UNUSED(option);
   Q_UNUSED(widget);
 
-  QLinearGradient gradient(0, 0, width(), 0);
+  QLinearGradient gradient(boundingRect().topLeft(), boundingRect().topRight());
   QColor rulerColor = QApplication::palette().windowText().color();
   rulerColor.setAlphaF(_hover);
   gradient.setColorAt(0, Qt::transparent);