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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include "fadingindicator.h"
#include "stylehelper.h"
#include <QGraphicsOpacityEffect>
#include <QHBoxLayout>
#include <QLabel>
#include <QPainter>
#include <QPixmap>
#include <QPointer>
#include <QPropertyAnimation>
#include <QTimer>
namespace Utils {
namespace Internal {
class FadingIndicatorPrivate : public QWidget
{
Q_OBJECT
public:
FadingIndicatorPrivate(QWidget *parent, FadingIndicator::TextSize size)
: QWidget(parent)
{
setAttribute(Qt::WA_TransparentForMouseEvents, true);
m_effect = new QGraphicsOpacityEffect(this);
setGraphicsEffect(m_effect);
m_effect->setOpacity(.999);
m_label = new QLabel;
QFont font = m_label->font();
font.setPixelSize(size == FadingIndicator::LargeText ? 30 : 18);
m_label->setFont(font);
QPalette pal = palette();
pal.setColor(QPalette::WindowText, pal.color(QPalette::Window));
m_label->setPalette(pal);
auto layout = new QHBoxLayout;
setLayout(layout);
layout->addWidget(m_label);
}
void setText(const QString &text)
{
m_pixmap = QPixmap();
m_label->setText(text);
m_effect->setOpacity(.6); // because of the fat opaque background color
layout()->setSizeConstraint(QLayout::SetFixedSize);
adjustSize();
QWidget *parent = parentWidget();
QPoint pos = parent ? (parent->rect().center() - rect().center()) : QPoint();
if (pixmapIndicator && pixmapIndicator->geometry().intersects(QRect(pos, size())))
pos.setY(pixmapIndicator->geometry().bottom() + 1);
move(pos);
}
void setPixmap(const QString &uri)
{
m_label->hide();
m_pixmap.load(StyleHelper::dpiSpecificImageFile(uri));
layout()->setSizeConstraint(QLayout::SetNoConstraint);
resize(m_pixmap.size() / m_pixmap.devicePixelRatio());
QWidget *parent = parentWidget();
QPoint pos = parent ? (parent->rect().center() - rect().center()) : QPoint();
if (textIndicator && textIndicator->geometry().intersects(QRect(pos, size())))
pos.setY(textIndicator->geometry().bottom() + 1);
move(pos);
}
void run(int ms)
{
show();
raise();
QTimer::singleShot(ms, this, &FadingIndicatorPrivate::runInternal);
}
static QPointer<FadingIndicatorPrivate> textIndicator;
static QPointer<FadingIndicatorPrivate> pixmapIndicator;
protected:
void paintEvent(QPaintEvent *) override
{
QPainter p(this);
p.setRenderHint(QPainter::Antialiasing);
if (!m_pixmap.isNull()) {
p.drawPixmap(rect(), m_pixmap);
} else {
p.setBrush(palette().color(QPalette::WindowText));
p.setPen(Qt::NoPen);
p.drawRoundedRect(rect(), 15, 15);
}
}
private:
void runInternal()
{
QPropertyAnimation *anim = new QPropertyAnimation(m_effect, "opacity", this);
anim->setDuration(200);
anim->setEndValue(0.);
connect(anim, &QAbstractAnimation::finished, this, &QObject::deleteLater);
anim->start(QAbstractAnimation::DeleteWhenStopped);
}
QGraphicsOpacityEffect *m_effect;
QLabel *m_label;
QPixmap m_pixmap;
};
QPointer<FadingIndicatorPrivate> FadingIndicatorPrivate::textIndicator;
QPointer<FadingIndicatorPrivate> FadingIndicatorPrivate::pixmapIndicator;
} // Internal
namespace FadingIndicator {
void showText(QWidget *parent, const QString &text, TextSize size)
{
QPointer<Internal::FadingIndicatorPrivate> &indicator
= Internal::FadingIndicatorPrivate::textIndicator;
if (indicator)
delete indicator;
indicator = new Internal::FadingIndicatorPrivate(parent, size);
indicator->setText(text);
indicator->run(2500); // deletes itself
}
void showPixmap(QWidget *parent, const QString &pixmap)
{
QPointer<Internal::FadingIndicatorPrivate> &indicator
= Internal::FadingIndicatorPrivate::pixmapIndicator;
if (indicator)
delete indicator;
indicator = new Internal::FadingIndicatorPrivate(parent, LargeText);
indicator->setPixmap(pixmap);
indicator->run(300); // deletes itself
}
} // FadingIndicator
} // Utils
#include "fadingindicator.moc"
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