1 files changed, 304 insertions, 0 deletions
diff --git a/tools/qmldebugger/canvasframerate.cpp b/tools/qmldebugger/canvasframerate.cpp
new file mode 100644
index 0000000..022aed5
--- /dev/null
+++ b/tools/qmldebugger/canvasframerate.cpp
@@ -0,0 +1,304 @@
+#include "canvasframerate.h"
+#include <QtGui/qwidget.h>
+#include <QtGui/qpainter.h>
+#include <QtGui/qscrollbar.h>
+#include <QtDeclarative/qmldebugclient.h>
+#include <QtCore/qdebug.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qdatastream.h>
+#include <QtGui/qboxlayout.h>
+#include <QResizeEvent>
+#include <QShowEvent>
+#include <QTabWidget>
+#include <QPushButton>
+#include <QLineEdit>
+#include <QCheckBox>
+
+class QLineGraph : public QWidget
+{
+Q_OBJECT
+public:
+    QLineGraph(QWidget * = 0);
+
+    void setPosition(int);
+
+public slots:
+    void addSample(int, int, int, int, bool);
+
+protected:
+    virtual void paintEvent(QPaintEvent *);
+    virtual QSize sizeHint() const;
+
+private slots:
+    void scrollbarChanged(int);
+
+private:
+    void updateScrollbar();
+    void drawSample(QPainter *, int, const QRect &);
+    void drawTime(QPainter *, const QRect &);
+    struct Sample { 
+        int sample[4];
+        bool isBreak;
+    };
+    QList<Sample> _samples;
+
+    QScrollBar sb;
+    int position;
+    int samplesPerWidth;
+    int resolutionForHeight;
+    bool ignoreScroll;
+};
+
+QLineGraph::QLineGraph(QWidget *parent)
+: QWidget(parent), sb(Qt::Horizontal, this), position(-1), samplesPerWidth(99), resolutionForHeight(50), ignoreScroll(false)
+{
+    sb.setMaximum(0);
+    sb.setMinimum(0);
+    sb.setSingleStep(1);
+
+    QVBoxLayout *layout = new QVBoxLayout;
+    setLayout(layout);
+    layout->addStretch(2);
+    layout->addWidget(&sb);
+    QObject::connect(&sb, SIGNAL(valueChanged(int)), this, SLOT(scrollbarChanged(int)));
+}
+
+QSize QLineGraph::sizeHint() const
+{
+    return QSize(800, 600);
+}
+
+void QLineGraph::scrollbarChanged(int v)
+{
+    if(ignoreScroll)
+        return;
+
+    if (v == sb.maximum())
+        position = -1;
+    else
+        position = v;
+    update();
+}
+
+void QLineGraph::updateScrollbar()
+{
+    ignoreScroll = true;
+    sb.setMaximum(qMax(0, _samples.count() - samplesPerWidth - 1));
+
+    if(position == -1) {
+        sb.setValue(sb.maximum());
+    } else {
+        sb.setValue(position);
+    }
+    ignoreScroll = false;
+}
+
+void QLineGraph::addSample(int a, int b, int c, int d, bool isBreak)
+{
+    Sample s;
+    s.isBreak = isBreak;
+    s.sample[0] = a;
+    s.sample[1] = b;
+    s.sample[2] = c;
+    s.sample[3] = d;
+    _samples << s;
+    updateScrollbar();
+    update();
+}
+
+void QLineGraph::setPosition(int p)
+{
+    scrollbarChanged(p);
+}
+
+void QLineGraph::drawTime(QPainter *p, const QRect &rect)
+{
+    if(_samples.isEmpty())
+        return;
+
+    int first = position;
+    if(first == -1)
+        first = qMax(0, _samples.count() - samplesPerWidth - 1);
+    int last = qMin(_samples.count() - 1, first + samplesPerWidth);
+
+    qreal scaleX = qreal(rect.width()) / qreal(samplesPerWidth);
+
+    int t = 0;
+
+    for(int ii = first; ii <= last; ++ii) {
+        int sampleTime = _samples.at(ii).sample[3] / 1000;
+        if(sampleTime != t) {
+
+            int xEnd = rect.left() + scaleX * (ii - first);
+            p->drawLine(xEnd, rect.bottom(), xEnd, rect.bottom() + 7);
+
+            QRect text(xEnd - 30, rect.bottom() + 10, 60, 30);
+
+            p->drawText(text, Qt::AlignHCenter | Qt::AlignTop, QString::number(_samples.at(ii).sample[3]));
+
+            t = sampleTime;
+        }
+    }
+
+}
+
+void QLineGraph::drawSample(QPainter *p, int s, const QRect &rect)
+{
+    if(_samples.isEmpty())
+        return;
+
+    int first = position;
+    if(first == -1)
+        first = qMax(0, _samples.count() - samplesPerWidth - 1);
+    int last = qMin(_samples.count() - 1, first + samplesPerWidth);
+
+    qreal scaleY = rect.height() / resolutionForHeight;
+    qreal scaleX = qreal(rect.width()) / qreal(samplesPerWidth);
+
+    int xEnd;
+    int lastXEnd = rect.left();
+
+    p->save();
+    p->setPen(Qt::NoPen);
+    for(int ii = first + 1; ii <= last; ++ii) {
+
+        xEnd = rect.left() + scaleX * (ii - first);
+        int yEnd = rect.bottom() - _samples.at(ii).sample[s] * scaleY;
+
+        if (!(s == 0 && _samples.at(ii).isBreak)) 
+            p->drawRect(QRect(lastXEnd, yEnd, scaleX, _samples.at(ii).sample[s] * scaleY));
+
+        lastXEnd = xEnd;
+    }
+    p->restore();
+}
+
+void QLineGraph::paintEvent(QPaintEvent *)
+{
+    QPainter p(this);
+    p.setRenderHint(QPainter::Antialiasing);
+
+
+    QRect r(50, 10, width() - 60, height() - 60);
+    p.setBrush(QColor("lightsteelblue"));
+    drawSample(&p, 0, r);
+
+    p.setBrush(QColor("pink"));
+    drawSample(&p, 1, r);
+
+    p.setBrush(QColor("green"));
+    drawSample(&p, 2, r);
+
+    p.setBrush(Qt::NoBrush);
+    p.drawRect(r);
+
+    for(int ii = 0; ii <= resolutionForHeight; ++ii) {
+        int y = 1 + r.bottom() - ii * r.height() / resolutionForHeight;
+
+        if((ii % 10) == 0) {
+            p.drawLine(r.left() - 20, y, r.left(), y);
+            QRect text(r.left() - 20 - 53, y - 10, 50, 20);
+            p.drawText(text, Qt::AlignRight | Qt::AlignVCenter, QString::number(ii));
+        } else {
+            p.drawLine(r.left() - 7, y, r.left(), y);
+        }
+    }
+
+    drawTime(&p, r);
+}
+
+class CanvasFrameRatePlugin : public QmlDebugClientPlugin
+{
+Q_OBJECT
+public:
+    CanvasFrameRatePlugin(QmlDebugClient *client);
+
+signals:
+    void sample(int, int, int, int, bool);
+
+protected:
+    virtual void messageReceived(const QByteArray &);
+
+private:
+    int la;
+    int lb;
+    int ld;
+};
+
+CanvasFrameRatePlugin::CanvasFrameRatePlugin(QmlDebugClient *client)
+: QmlDebugClientPlugin(QLatin1String("CanvasFrameRate"), client), la(-1)
+{
+}
+
+void CanvasFrameRatePlugin::messageReceived(const QByteArray &data)
+{
+    QByteArray rwData = data;
+    QDataStream stream(&rwData, QIODevice::ReadOnly);
+
+    int a; int b; int c; int d; bool isBreak;
+    stream >> a >> b >> c >> d >> isBreak;
+
+    if (la != -1) 
+        emit sample(c, lb, la, ld, isBreak);
+
+    la = a;
+    lb = b;
+    ld = d;
+}
+
+CanvasFrameRate::CanvasFrameRate(QmlDebugClient *client, QWidget *parent)
+: QWidget(parent)
+{
+    m_plugin = new CanvasFrameRatePlugin(client);
+
+    QVBoxLayout *layout = new QVBoxLayout;
+    layout->setContentsMargins(0,0,0,0);
+    layout->setSpacing(0);
+    setLayout(layout);
+
+    m_tabs = new QTabWidget(this);
+    layout->addWidget(m_tabs);
+
+    QHBoxLayout *bottom = new QHBoxLayout;
+    layout->addLayout(bottom);
+    bottom->addStretch(2);
+
+    QCheckBox *check = new QCheckBox("Enable", this);
+    bottom->addWidget(check);
+    QObject::connect(check, SIGNAL(stateChanged(int)), 
+                     this, SLOT(stateChanged(int)));
+
+    QPushButton *pb = new QPushButton(tr("New Tab"), this);
+    QObject::connect(pb, SIGNAL(clicked()), this, SLOT(newTab()));
+    bottom->addWidget(pb);
+
+    newTab();
+}
+
+void CanvasFrameRate::newTab()
+{
+    if (m_tabs->count()) {
+        QWidget *w = m_tabs->widget(m_tabs->count() - 1);
+        QObject::disconnect(m_plugin, SIGNAL(sample(int,int,int,int,bool)), 
+                            w, SLOT(addSample(int,int,int,int,bool)));
+    }
+
+    int id = m_tabs->count();
+
+    QLineGraph *graph = new QLineGraph(this);
+    QObject::connect(m_plugin, SIGNAL(sample(int,int,int,int,bool)), 
+                     graph, SLOT(addSample(int,int,int,int,bool)));
+
+    QString name = QLatin1String("Graph ") + QString::number(id);
+    m_tabs->addTab(graph, name);
+    m_tabs->setCurrentIndex(id);
+}
+
+void CanvasFrameRate::stateChanged(int s)
+{
+    bool checked = s != 0;
+
+    static_cast<QmlDebugClientPlugin *>(m_plugin)->setEnabled(checked);
+}
+
+#include "canvasframerate.moc"