afb81b8278
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66 lines
1.5 KiB
C++
66 lines
1.5 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 "calls/calls_signal_bars.h"
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#include "calls/calls_call.h"
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#include "ui/painter.h"
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#include "styles/style_calls.h"
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namespace Calls {
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SignalBars::SignalBars(
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QWidget *parent,
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not_null<Call*> call,
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const style::CallSignalBars &st)
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: RpWidget(parent)
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, _st(st)
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, _count(Call::kSignalBarStarting) {
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resize(
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_st.width + (_st.width + _st.skip) * (Call::kSignalBarCount - 1),
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_st.max);
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call->signalBarCountValue(
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) | rpl::on_next([=](int count) {
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changed(count);
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}, lifetime());
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}
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void SignalBars::paintEvent(QPaintEvent *e) {
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auto p = QPainter(this);
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PainterHighQualityEnabler hq(p);
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p.setPen(Qt::NoPen);
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p.setBrush(_st.color);
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for (auto i = 0; i < Call::kSignalBarCount; ++i) {
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p.setOpacity((i < _count) ? 1. : _st.inactiveOpacity);
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const auto barHeight = _st.min
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+ (_st.max - _st.min) * (i / float64(Call::kSignalBarCount - 1));
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const auto barLeft = i * (_st.width + _st.skip);
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const auto barTop = height() - barHeight;
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p.drawRoundedRect(
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QRectF(
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barLeft,
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barTop,
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_st.width,
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barHeight),
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_st.radius,
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_st.radius);
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}
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p.setOpacity(1.);
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}
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void SignalBars::changed(int count) {
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if (_count == Call::kSignalBarFinished) {
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return;
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} else if (_count != count) {
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_count = count;
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update();
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}
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}
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} // namespace Calls
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