preliminary client-side replay watching code

cockatrice/src/replay_timeline_widget.h

@@ -0,0 +1,39 @@
+#ifndef REPLAY_TIMELINE_WIDGET
+#define REPLAY_TIMELINE_WIDGET
+
+#include <QWidget>
+#include <QList>
+
+class QPaintEvent;
+class QTimer;
+
+class ReplayTimelineWidget : public QWidget {
+	Q_OBJECT
+signals:
+	void processNextEvent();
+	void replayFinished();
+private:
+	QTimer *replayTimer;
+	QList<int> replayTimeline;
+	QList<int> histogram;
+	static const int binLength;
+	int maxBinValue, maxTime;
+	qreal timeScaleFactor;
+	int currentTime;
+	int currentEvent;
+private slots:
+	void replayTimerTimeout();
+public:
+	ReplayTimelineWidget(QWidget *parent = 0);
+	void setTimeline(const QList<int> &_replayTimeline);
+	QSize sizeHint() const;
+	void setTimeScaleFactor(qreal _timeScaleFactor);
+	int getCurrentEvent() const { return currentEvent; }
+public slots:
+	void startReplay();
+	void stopReplay();
+protected:
+	void paintEvent(QPaintEvent *event);
+};
+
+#endif