Clamp zone view widget's titlebar inside the viewable area

cockatrice/src/zoneviewwidget.cpp

@@ -20,44 +20,6 @@
 #include "pb/command_stop_dump_zone.pb.h"
 #include "pb/command_shuffle.pb.h"
 
-TitleLabel::TitleLabel()
-    : QGraphicsWidget(), text(" ")
-{
-    setAcceptHoverEvents(true);
-}
-
-void TitleLabel::paint(QPainter *painter, const QStyleOptionGraphicsItem * /*option*/, QWidget * /*widget*/)
-{
-    QBrush windowBrush = palette().window();
-    windowBrush.setColor(windowBrush.color().darker(150));
-    painter->fillRect(boundingRect(), windowBrush);
-    painter->drawText(boundingRect(), Qt::AlignLeft | Qt::AlignVCenter, text);
-}
-
-QSizeF TitleLabel::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
-{
-    QFont f;
-    QFontMetrics fm(f);
-    if (which == Qt::MaximumSize)
-        return QSizeF(constraint.width(), fm.size(Qt::TextSingleLine, text).height() + 10);
-    else
-        return fm.size(Qt::TextSingleLine, text) + QSizeF(10, 10);
-}
-
-void TitleLabel::mousePressEvent(QGraphicsSceneMouseEvent *event)
-{
-    if (event->button() == Qt::LeftButton) {
-        buttonDownPos = static_cast<GameScene *>(scene())->getViewTransform().inverted().map(event->pos());
-        event->accept();
-    } else
-        event->ignore();
-}
-
-void TitleLabel::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
-{
-    emit mouseMoved(event->scenePos() - buttonDownPos);
-}
-
 ZoneViewWidget::ZoneViewWidget(Player *_player, CardZone *_origZone, int numberCards, bool _revealZone, bool _writeableRevealZone, const QList<const ServerInfo_Card *> &cardList)
     : QGraphicsWidget(0, Qt::Window), canBeShuffled(_origZone->getIsShufflable()), player(_player)
 {
@@ -174,8 +136,20 @@ void ZoneViewWidget::retranslateUi()
     pileViewCheckBox.setText(tr("pile view"));
 }
 
-void ZoneViewWidget::moveWidget(QPointF scenePos)
+void ZoneViewWidget::moveEvent(QGraphicsSceneMoveEvent * /* event */)
 {
+    if(!scene())
+        return;
+
+    static int titleBarHeight = 0;
+    if(titleBarHeight == 0)
+    {
+        QStyleOptionTitleBar so;
+        titleBarHeight = style()->pixelMetric(QStyle::PM_TitleBarHeight, &so, (QWidget*) this);
+    }
+
+    QPointF scenePos = pos();
+
     if(scenePos.x() < 0)
     {
         scenePos.setX(0);
@@ -185,16 +159,17 @@ void ZoneViewWidget::moveWidget(QPointF scenePos)
             scenePos.setX(maxw);
     }
 
-    if(scenePos.y() < 0)
+    if(scenePos.y() < titleBarHeight)
     {
-        scenePos.setY(0);
+        scenePos.setY(titleBarHeight);
     } else {
-        qreal maxh = scene()->sceneRect().height() - 100;
+        qreal maxh = scene()->sceneRect().height() - titleBarHeight;
         if(scenePos.y() > maxh)
             scenePos.setY(maxh);
     }
 
-    setPos(scenePos);
+    if(scenePos != pos())
+        setPos(scenePos);
 }
 
 void ZoneViewWidget::resizeToZoneContents()

cockatrice/src/zoneviewwidget.h

@@ -18,30 +18,12 @@ class QGraphicsSceneMouseEvent;
 class QGraphicsSceneWheelEvent;
 class QStyleOption;
 
-class TitleLabel : public QGraphicsWidget {
-    Q_OBJECT
-private:
-    QString text;
-    QPointF buttonDownPos;
-public:
-    TitleLabel();
-    void paint(QPainter *painter, const QStyleOptionGraphicsItem * /*option*/, QWidget * /*widget*/);
-    void setText(const QString &_text) { text = _text; update(); }
-signals:
-    void mouseMoved(QPointF scenePos);
-protected:
-    QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint) const;
-    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
-    void mousePressEvent(QGraphicsSceneMouseEvent *event);
-};
-
 class ZoneViewWidget : public QGraphicsWidget {
     Q_OBJECT
 private:
     ZoneViewZone *zone;
     QGraphicsWidget *zoneContainer;
-    
-    TitleLabel *titleLabel;
+
     QPushButton *closeButton;
     QScrollBar *scrollBar;
     QCheckBox sortByNameCheckBox;
@@ -62,7 +44,7 @@ private slots:
     void handleWheelEvent(QGraphicsSceneWheelEvent *event);
     void handleScrollBarChange(int value);
     void zoneDeleted();
-    void moveWidget(QPointF scenePos);
+    void moveEvent(QGraphicsSceneMoveEvent * /* event */);
 public:
     ZoneViewWidget(Player *_player, CardZone *_origZone, int numberCards = 0, bool _revealZone = false, bool _writeableRevealZone = false, const QList<const ServerInfo_Card *> &cardList = QList<const ServerInfo_Card *>());
     ZoneViewZone *getZone() const { return zone; }