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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QtWidgets>
#include "screenshot.h"
//! [0]
Screenshot::Screenshot()
: screenshotLabel(new QLabel(this))
{
screenshotLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
screenshotLabel->setAlignment(Qt::AlignCenter);
const QRect screenGeometry = screen()->geometry();
screenshotLabel->setMinimumSize(screenGeometry.width() / 8, screenGeometry.height() / 8);
QVBoxLayout *mainLayout = new QVBoxLayout(this);
mainLayout->addWidget(screenshotLabel);
QGroupBox *optionsGroupBox = new QGroupBox(tr("Options"), this);
delaySpinBox = new QSpinBox(optionsGroupBox);
delaySpinBox->setSuffix(tr(" s"));
delaySpinBox->setMaximum(60);
connect(delaySpinBox, &QSpinBox::valueChanged,
this, &Screenshot::updateCheckBox);
hideThisWindowCheckBox = new QCheckBox(tr("Hide This Window"), optionsGroupBox);
QGridLayout *optionsGroupBoxLayout = new QGridLayout(optionsGroupBox);
optionsGroupBoxLayout->addWidget(new QLabel(tr("Screenshot Delay:"), this), 0, 0);
optionsGroupBoxLayout->addWidget(delaySpinBox, 0, 1);
optionsGroupBoxLayout->addWidget(hideThisWindowCheckBox, 1, 0, 1, 2);
mainLayout->addWidget(optionsGroupBox);
QHBoxLayout *buttonsLayout = new QHBoxLayout;
newScreenshotButton = new QPushButton(tr("New Screenshot"), this);
connect(newScreenshotButton, &QPushButton::clicked, this, &Screenshot::newScreenshot);
buttonsLayout->addWidget(newScreenshotButton);
QPushButton *saveScreenshotButton = new QPushButton(tr("Save Screenshot"), this);
connect(saveScreenshotButton, &QPushButton::clicked, this, &Screenshot::saveScreenshot);
buttonsLayout->addWidget(saveScreenshotButton);
QPushButton *quitScreenshotButton = new QPushButton(tr("Quit"), this);
quitScreenshotButton->setShortcut(Qt::CTRL | Qt::Key_Q);
connect(quitScreenshotButton, &QPushButton::clicked, this, &QWidget::close);
buttonsLayout->addWidget(quitScreenshotButton);
buttonsLayout->addStretch();
mainLayout->addLayout(buttonsLayout);
shootScreen();
delaySpinBox->setValue(5);
setWindowTitle(tr("Screenshot"));
resize(300, 200);
}
//! [0]
//! [1]
void Screenshot::resizeEvent(QResizeEvent * /* event */)
{
QSize scaledSize = originalPixmap.size();
scaledSize.scale(screenshotLabel->size(), Qt::KeepAspectRatio);
if (scaledSize != screenshotLabel->pixmap().size())
updateScreenshotLabel();
}
//! [1]
//! [2]
void Screenshot::newScreenshot()
{
if (hideThisWindowCheckBox->isChecked())
hide();
newScreenshotButton->setDisabled(true);
QTimer::singleShot(delaySpinBox->value() * 1000, this, &Screenshot::shootScreen);
}
//! [2]
//! [3]
void Screenshot::saveScreenshot()
{
const QString format = "png";
QString initialPath = QStandardPaths::writableLocation(QStandardPaths::PicturesLocation);
if (initialPath.isEmpty())
initialPath = QDir::currentPath();
initialPath += tr("/untitled.") + format;
QFileDialog fileDialog(this, tr("Save As"), initialPath);
fileDialog.setAcceptMode(QFileDialog::AcceptSave);
fileDialog.setFileMode(QFileDialog::AnyFile);
fileDialog.setDirectory(initialPath);
QStringList mimeTypes;
const QList<QByteArray> baMimeTypes = QImageWriter::supportedMimeTypes();
for (const QByteArray &bf : baMimeTypes)
mimeTypes.append(QLatin1String(bf));
fileDialog.setMimeTypeFilters(mimeTypes);
fileDialog.selectMimeTypeFilter("image/" + format);
fileDialog.setDefaultSuffix(format);
if (fileDialog.exec() != QDialog::Accepted)
return;
const QString fileName = fileDialog.selectedFiles().first();
if (!originalPixmap.save(fileName)) {
QMessageBox::warning(this, tr("Save Error"), tr("The image could not be saved to \"%1\".")
.arg(QDir::toNativeSeparators(fileName)));
}
}
//! [3]
//! [4]
void Screenshot::shootScreen()
{
QScreen *screen = QGuiApplication::primaryScreen();
if (const QWindow *window = windowHandle())
screen = window->screen();
if (!screen)
return;
if (delaySpinBox->value() != 0)
QApplication::beep();
originalPixmap = screen->grabWindow(0);
updateScreenshotLabel();
newScreenshotButton->setDisabled(false);
if (hideThisWindowCheckBox->isChecked())
show();
}
//! [4]
//! [6]
void Screenshot::updateCheckBox()
{
if (delaySpinBox->value() == 0) {
hideThisWindowCheckBox->setDisabled(true);
hideThisWindowCheckBox->setChecked(false);
} else {
hideThisWindowCheckBox->setDisabled(false);
}
}
//! [6]
//! [10]
void Screenshot::updateScreenshotLabel()
{
screenshotLabel->setPixmap(originalPixmap.scaled(screenshotLabel->size(),
Qt::KeepAspectRatio,
Qt::SmoothTransformation));
}
//! [10]
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