67 lines
1.5 KiB
C++
67 lines
1.5 KiB
C++
// SPDX-FileCopyrightText: 2021 Nheko Contributors
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//
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// SPDX-License-Identifier: GPL-3.0-or-later
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#include <QPainter>
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#include "Ripple.h"
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#include "RippleOverlay.h"
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RippleOverlay::RippleOverlay(QWidget *parent)
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: OverlayWidget(parent)
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, use_clip_(false)
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{
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setAttribute(Qt::WA_TransparentForMouseEvents);
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setAttribute(Qt::WA_NoSystemBackground);
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}
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void
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RippleOverlay::addRipple(Ripple *ripple)
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{
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ripple->setOverlay(this);
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ripples_.push_back(ripple);
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ripple->start();
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}
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void
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RippleOverlay::addRipple(const QPoint &position, qreal radius)
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{
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Ripple *ripple = new Ripple(position);
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ripple->setRadiusEndValue(radius);
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addRipple(ripple);
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}
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void
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RippleOverlay::removeRipple(Ripple *ripple)
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{
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if (ripples_.removeOne(ripple))
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delete ripple;
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}
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void
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RippleOverlay::paintEvent(QPaintEvent *event)
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{
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Q_UNUSED(event)
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QPainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing);
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painter.setPen(Qt::NoPen);
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if (use_clip_)
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painter.setClipPath(clip_path_);
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for (auto it = ripples_.constBegin(); it != ripples_.constEnd(); ++it)
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paintRipple(&painter, *it);
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}
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void
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RippleOverlay::paintRipple(QPainter *painter, Ripple *ripple)
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{
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const qreal radius = ripple->radius();
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const QPointF center = ripple->center();
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painter->setOpacity(ripple->opacity());
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painter->setBrush(ripple->brush());
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painter->drawEllipse(center, radius, radius);
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}
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