46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "ui/widgets/level_meter.h"
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namespace Ui {
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LevelMeter::LevelMeter(QWidget *parent, const style::LevelMeter &st)
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: RpWidget(parent)
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, _st(st) {
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}
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void LevelMeter::setValue(float value) {
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_value = value;
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repaint();
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}
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void LevelMeter::paintEvent(QPaintEvent* event) {
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Painter p(this);
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PainterHighQualityEnabler hq(p);
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p.setPen(Qt::NoPen);
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const auto activeFg = _st.activeFg;
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const auto inactiveFg = _st.inactiveFg;
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const auto radius = _st.lineWidth / 2;
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const auto rect = QRect(0, 0, _st.lineWidth, height());
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p.setBrush(activeFg);
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for (auto i = 0; i < _st.lineCount; ++i) {
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const auto valueAtLine = (float)(i + 1) / _st.lineCount;
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if (valueAtLine > _value) {
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p.setBrush(inactiveFg);
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}
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p.drawRoundedRect(
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rect.translated((_st.lineWidth + _st.lineSpacing) * i, 0),
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radius,
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radius);
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}
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}
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} // namespace Ui
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