1 files changed, 110 insertions, 0 deletions
diff --git a/DSLogic-gui/pv/view/dsldial.cpp b/DSLogic-gui/pv/view/dsldial.cpp
new file mode 100644
index 0000000..ccdec2e
--- /dev/null
+++ b/DSLogic-gui/pv/view/dsldial.cpp
@@ -0,0 +1,110 @@
+#include "dsldial.h"
+
+#include <assert.h>
+
+namespace pv {
+namespace view {
+
+dslDial::dslDial(quint64 div, quint64 step,
+                 QVector<quint64> value, QVector<QString> unit)
+{
+    assert(div > 0);
+    assert(step > 0);
+    assert((quint64)value.count() == div);
+    assert(unit.count() > 0);
+
+    _div = div;
+    _step = step;
+    _value = value;
+    _unit = unit;
+    _sel = 0;
+}
+
+dslDial::~dslDial()
+{
+}
+
+void dslDial::paint(QPainter &p, QRectF dialRect, QColor dialColor)
+{
+    p.setRenderHint(QPainter::Antialiasing, true);
+    p.setPen(dialColor);
+    p.setBrush(dialColor);
+
+    int dialStartAngle = 225 * 16;
+    int dialSpanAngle = -270 * 16;
+
+    // draw dial arc
+    p.drawArc(dialRect, dialStartAngle, dialSpanAngle);
+    // draw ticks
+    p.save();
+    p.translate(dialRect.center());
+    p.rotate(45);
+    for (quint64 i = 0; i < _div; i++) {
+        // draw major ticks
+        p.drawLine(0, dialRect.width()/2+3, 0, dialRect.width()/2+8);
+        // draw minor ticks
+        for (quint64 j = 0; (j < 5) && (i < _div - 1); j++) {
+            p.drawLine(0, dialRect.width()/2+3, 0, dialRect.width()/2+5);
+            p.rotate(54.0/(_div-1));
+        }
+    }
+    // draw pointer
+    p.rotate(90+270.0/(_div-1)*_sel);
+    p.drawEllipse(-3, -3, 6, 6);
+    p.drawLine(3, 0, 0, dialRect.width()/2-3);
+    p.drawLine(-3, 0, 0, dialRect.width()/2-3);
+    p.restore();
+    // draw value
+    quint64 displayValue = _value[_sel];
+    quint64 displayIndex = 0;
+    while(displayValue / _step >= 1) {
+        displayValue = displayValue / _step;
+        displayIndex++;
+    }
+    QString pText = QString::number(displayValue) + _unit[displayIndex] + "/div";
+    QFontMetrics fm(p.font());
+    p.drawText(QRectF(dialRect.left(), dialRect.bottom()-dialRect.width()*0.3+fm.height()*0.5, dialRect.width(), fm.height()), Qt::AlignCenter, pText);
+
+}
+
+void dslDial::set_sel(quint64 sel)
+{
+    assert(sel < _div);
+
+    _sel = sel;
+}
+
+quint64 dslDial::get_sel()
+{
+    return _sel;
+}
+
+bool dslDial::isMin()
+{
+    if(_sel == 0)
+        return true;
+    else
+        return false;
+}
+
+bool dslDial::isMax()
+{
+    if(_sel == _div - 1)
+        return true;
+    else
+        return false;
+}
+
+quint64 dslDial::get_value()
+{
+    return _value[_sel];
+}
+
+bool dslDial::set_value(quint64 value)
+{
+    assert(_value.contains(value));
+    _sel = _value.indexOf(value, 0);
+}
+
+} // namespace view
+} // namespace pv