Merge branch 'kinetic-declarativeui' of git@scm.dev.nokia.troll.no:qt/kinetic into kinetic-declarativeui

1 files changed, 287 insertions, 0 deletions

diff --git a/src/declarative/canvas/monitor/main.cpp b/src/declarative/canvas/monitor/main.cpp
new file mode 100644
index 0000000..f5f40bd
--- /dev/null
+++ b/src/declarative/canvas/monitor/main.cpp
@@ -0,0 +1,287 @@
+#include <QApplication>
+#include <QWidget>
+#include <QPainter>
+#include <QTcpSocket>
+#include <QScrollBar>
+
+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 void mousePressEvent(QMouseEvent *);
+    virtual void resizeEvent(QResizeEvent *);
+    virtual void showEvent(QShowEvent *);
+
+private slots:
+    void scrollbarChanged(int);
+
+private:
+    void positionScrollbar();
+    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);
+
+    QObject::connect(&sb, SIGNAL(valueChanged(int)), this, SLOT(scrollbarChanged(int)));
+}
+
+void QLineGraph::scrollbarChanged(int v)
+{
+    if(ignoreScroll)
+        return;
+
+    position = v;
+    update();
+}
+
+void QLineGraph::positionScrollbar()
+{
+    sb.setFixedWidth(width());
+    sb.move(0, height() - sb.height());
+}
+
+void QLineGraph::resizeEvent(QResizeEvent *e)
+{
+    QWidget::resizeEvent(e);
+    positionScrollbar();
+}
+
+void QLineGraph::showEvent(QShowEvent *e)
+{
+    QWidget::showEvent(e);
+    positionScrollbar();
+}
+
+void QLineGraph::mousePressEvent(QMouseEvent *)
+{
+    if(position == -1) {
+        position = qMax(0, _samples.count() - samplesPerWidth - 1);
+    } else {
+        position = -1;
+    }
+    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::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 MyReader : public QObject
+{
+Q_OBJECT
+public:
+    MyReader(const QString &host, int port);
+
+signals:
+    void sample(int, int, int, int, bool);
+
+private slots:
+    void readyRead();
+
+private:
+    QTcpSocket *socket;
+
+    int la;
+    int lb;
+    int ld;
+};
+
+MyReader::MyReader(const QString &host, int port)
+: socket(0), la(-1)
+{
+    socket = new QTcpSocket(this);
+    QObject::connect(socket, SIGNAL(readyRead()), this, SLOT(readyRead()));
+    socket->connectToHost(host, port);
+    socket->waitForConnected();
+}
+
+void MyReader::readyRead()
+{
+    static int la = -1;
+    static int lb;
+    static int ld;
+
+    if(socket->canReadLine()) {
+        QString line = socket->readLine();
+
+        int a;
+        int b;
+        int c;
+        int d;
+        int isBreak;
+        sscanf(line.toLatin1().constData(), "%d %d %d %d %d", &a, &b, &c, &d, &isBreak);
+
+        if (la != -1) 
+            emit sample(c, lb, la, ld, isBreak);
+
+        la = a;
+        lb = b;
+        ld = d;
+    }
+}
+
+int main(int argc, char ** argv)
+{
+    if(argc != 3) {
+        qWarning() << "Usage:" << argv[0] << "host port";
+        return -1;
+    }
+
+    QApplication app(argc, argv);
+
+    MyReader reader(argv[1], atoi(argv[2]));
+
+    QLineGraph graph;
+    QObject::connect(&reader, SIGNAL(sample(int,int,int,int,bool)), &graph, SLOT(addSample(int,int,int,int,bool)));
+    graph.setFixedSize(800, 600);
+    graph.show();
+
+    return app.exec();
+}
+
+#include "main.moc"