forked from Ivasoft/DSView
111 lines
2.5 KiB
C++
111 lines
2.5 KiB
C++
#include "dsldial.h"
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#include <assert.h>
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namespace pv {
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namespace view {
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dslDial::dslDial(quint64 div, quint64 step,
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QVector<quint64> value, QVector<QString> unit)
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{
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assert(div > 0);
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assert(step > 0);
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assert((quint64)value.count() == div);
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assert(unit.count() > 0);
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_div = div;
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_step = step;
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_value = value;
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_unit = unit;
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_sel = 0;
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}
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dslDial::~dslDial()
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{
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}
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void dslDial::paint(QPainter &p, QRectF dialRect, QColor dialColor)
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{
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p.setRenderHint(QPainter::Antialiasing, true);
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p.setPen(dialColor);
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p.setBrush(dialColor);
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int dialStartAngle = 225 * 16;
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int dialSpanAngle = -270 * 16;
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// draw dial arc
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p.drawArc(dialRect, dialStartAngle, dialSpanAngle);
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// draw ticks
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p.save();
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p.translate(dialRect.center());
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p.rotate(45);
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for (quint64 i = 0; i < _div; i++) {
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// draw major ticks
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p.drawLine(0, dialRect.width()/2+3, 0, dialRect.width()/2+8);
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// draw minor ticks
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for (quint64 j = 0; (j < 5) && (i < _div - 1); j++) {
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p.drawLine(0, dialRect.width()/2+3, 0, dialRect.width()/2+5);
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p.rotate(54.0/(_div-1));
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}
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}
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// draw pointer
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p.rotate(90+270.0/(_div-1)*_sel);
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p.drawEllipse(-3, -3, 6, 6);
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p.drawLine(3, 0, 0, dialRect.width()/2-3);
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p.drawLine(-3, 0, 0, dialRect.width()/2-3);
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p.restore();
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// draw value
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quint64 displayValue = _value[_sel];
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quint64 displayIndex = 0;
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while(displayValue / _step >= 1) {
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displayValue = displayValue / _step;
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displayIndex++;
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}
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QString pText = QString::number(displayValue) + _unit[displayIndex] + "/div";
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QFontMetrics fm(p.font());
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p.drawText(QRectF(dialRect.left(), dialRect.bottom()-dialRect.width()*0.3+fm.height()*0.5, dialRect.width(), fm.height()), Qt::AlignCenter, pText);
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}
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void dslDial::set_sel(quint64 sel)
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{
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assert(sel < _div);
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_sel = sel;
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}
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quint64 dslDial::get_sel()
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{
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return _sel;
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}
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bool dslDial::isMin()
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{
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if(_sel == 0)
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return true;
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else
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return false;
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}
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bool dslDial::isMax()
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{
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if(_sel == _div - 1)
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return true;
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else
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return false;
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}
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quint64 dslDial::get_value()
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{
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return _value[_sel];
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}
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bool dslDial::set_value(quint64 value)
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{
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assert(_value.contains(value));
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_sel = _value.indexOf(value, 0);
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}
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} // namespace view
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} // namespace pv
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