forgot to add files

2 files changed, 164 insertions, 0 deletions

diff --git a/plotwidget.cpp b/plotwidget.cpp
new file mode 100644
index 0000000..90231ec
--- /dev/null
+++ b/plotwidget.cpp
@@ -0,0 +1,125 @@
+#include <QtGui>
+
+#include "plotwidget.h"
+#include "qkineticscroller.h"
+
+PlotWidget::PlotWidget(QKineticScroller *scroller)
+    : QWidget(), m_scroller(scroller)
+{
+    setWindowTitle(QLatin1String("Plot"));
+    m_scroller->registerDebugHook(debugHook, this);
+    
+    m_clear = new QPushButton(QLatin1String("Clear"), this);
+    connect(m_clear, SIGNAL(clicked()), this, SLOT(reset()));
+    m_legend = new QLabel(QLatin1String("Legend"), this);
+    QString tooltip;
+    QTextStream ts(&tooltip);
+    ts << "<table border=\"0\">";
+    ts << "<tr><td width=\"30\" bgcolor=\"" << QColor(Qt::red).dark().name() << "\" /><td>releaseVelocity X</td></tr>";
+    ts << "<tr><td width=\"30\" bgcolor=\"" << QColor(Qt::red).light().name() << "\" /><td>releaseVelocity Y</td></tr>";
+    ts << "<tr><td width=\"30\" bgcolor=\"" << QColor(Qt::green).dark().name() << "\" /><td>Content Position X</td></tr>";
+    ts << "<tr><td width=\"30\" bgcolor=\"" << QColor(Qt::green).light().name() << "\" /><td>Content Position Y</td></tr>";
+    ts << "<tr><td width=\"30\" bgcolor=\"" << QColor(Qt::blue).dark().name() << "\" /><td>Overshoot Position X</td></tr>";
+    ts << "<tr><td width=\"30\" bgcolor=\"" << QColor(Qt::blue).light().name() << "\" /><td>Overshoot Position Y</td></tr>";
+    ts << "</table>";
+    m_legend->setToolTip(tooltip);
+}
+
+void PlotWidget::debugHook(void *user, const QPointF &releaseVelocity, const QPointF &contentPosition, const QPointF &overshootPosition)
+{
+    PlotItem pi = { releaseVelocity, contentPosition, overshootPosition };
+    static_cast<PlotWidget *>(user)->addPlotItem(pi);
+}
+
+static inline void doMaxMin(const QPointF &v, qreal &minmaxv)
+{
+    minmaxv = qMax(minmaxv, qMax(qAbs(v.x()), qAbs(v.y())));
+}
+
+void PlotWidget::addPlotItem(const PlotItem &pi)
+{
+    m_plotitems.append(pi);
+    minMaxVelocity = minMaxPosition = 0;
+
+    while (m_plotitems.size() > 500)
+        m_plotitems.removeFirst();
+    
+    foreach (const PlotItem &pi, m_plotitems) {
+        doMaxMin(pi.releaseVelocity, minMaxVelocity);
+        doMaxMin(pi.contentPosition, minMaxPosition);
+        doMaxMin(pi.overshootPosition, minMaxPosition);
+    } 
+    update();
+}
+
+void PlotWidget::reset()
+{
+    m_plotitems.clear();
+    minMaxVelocity = minMaxPosition = 0;
+    update();
+}
+
+void PlotWidget::resizeEvent(QResizeEvent *)
+{
+    QSize cs = m_clear->sizeHint();
+    QSize ls = m_legend->sizeHint();
+    m_clear->setGeometry(4, 4, cs.width(), cs.height());
+    m_legend->setGeometry(4, height() - ls.height() - 4, ls.width(), ls.height());
+}
+
+void PlotWidget::paintEvent(QPaintEvent *)
+{
+#define SCALE(v, mm)  ((qreal(1) - (v / mm)) * qreal(0.5) * height())
+
+    QColor rvColor = Qt::red;
+    QColor cpColor = Qt::green;
+    QColor opColor = Qt::blue;
+
+
+    QPainter p(this);
+    p.setRenderHints(QPainter::Antialiasing);
+    p.fillRect(rect(), Qt::white);
+
+    if (m_plotitems.isEmpty())
+        return;
+
+    int x = 2;
+    int offset = m_plotitems.size() - width() / 2;    
+    QList<PlotItem>::const_iterator it = m_plotitems.constBegin();
+    if (offset > 0)
+        it += (offset - 1);
+    
+//     PlotItem &last = const_cast<PlotItem &>(*it++);
+//     PlotItem dummy;
+     const PlotItem *last = &(*it++);
+//     last = *it++;
+        
+//    qWarning() << "lastOp[0].y = " << last.overshootPosition.y() << m_plotitems.at(1).overshootPosition.y();
+        
+    while (it != m_plotitems.constEnd()) {    
+        p.setPen(rvColor.light());
+        p.drawLine(qreal(x - 2), SCALE(last->releaseVelocity.x(), minMaxVelocity),
+                   qreal(x), SCALE(it->releaseVelocity.x(), minMaxVelocity));
+        p.setPen(rvColor.dark());
+        p.drawLine(qreal(x - 2), SCALE(last->releaseVelocity.y(), minMaxVelocity),
+                   qreal(x), SCALE(it->releaseVelocity.y(), minMaxVelocity));
+
+        p.setPen(cpColor.light());
+        p.drawLine(qreal(x - 2), SCALE(last->contentPosition.x(), minMaxPosition),
+                   qreal(x), SCALE(it->contentPosition.x(), minMaxPosition));
+        p.setPen(cpColor.dark());
+        p.drawLine(qreal(x - 2), SCALE(last->contentPosition.y(), minMaxPosition),
+                   qreal(x), SCALE(it->contentPosition.y(), minMaxPosition));
+
+        p.setPen(opColor.light());
+        p.drawLine(qreal(x - 2), SCALE(last->overshootPosition.x(), minMaxPosition),
+                   qreal(x), SCALE(it->overshootPosition.x(), minMaxPosition));
+        p.setPen(opColor.dark());
+        p.drawLine(qreal(x - 2), SCALE(last->overshootPosition.y(), minMaxPosition),
+                   qreal(x), SCALE(it->overshootPosition.y(), minMaxPosition));
+
+        last = &(*it++);
+        x += 2;
+    }
+#undef SCALE
+}
diff --git a/plotwidget.h b/plotwidget.h
new file mode 100644
index 0000000..8031549
--- /dev/null
+++ b/plotwidget.h
@@ -0,0 +1,39 @@
+#ifndef PLOTWIDGET_H
+#define PLOTWIDGET_H
+
+#include <QtGui>
+
+class QKineticScroller;
+
+class PlotWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    PlotWidget(QKineticScroller *scroller);
+
+public slots:
+    void reset();
+    
+protected:
+    void resizeEvent(QResizeEvent *);
+    void paintEvent(QPaintEvent *);
+    
+private:
+    static void debugHook(void *user, const QPointF &releaseVelocity, const QPointF &contentPosition, const QPointF &overshootPosition);
+    
+    struct PlotItem {
+        QPointF releaseVelocity;
+        QPointF contentPosition;
+        QPointF overshootPosition;
+    };
+    
+    void addPlotItem(const PlotItem &pi);
+
+    QKineticScroller *m_scroller;
+    QList<PlotItem> m_plotitems;
+    qreal minMaxVelocity, minMaxPosition;
+    QWidget *m_clear, *m_legend;
+};
+
+#endif