/examples/nfc/annotatedurl/mainwindow.cpp
C++ | 162 lines | 92 code | 21 blank | 49 comment | 9 complexity | c3c9cf2d022b0ed5fdf87af64dc1deee MD5 | raw file
- /****************************************************************************
- **
- ** Copyright (C) 2021 The Qt Company Ltd.
- ** Contact: https://www.qt.io/licensing/
- **
- ** This file is part of the QtNfc module.
- **
- ** $QT_BEGIN_LICENSE:BSD$
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- ** accordance with the commercial license agreement provided with the
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- ** information use the contact form at https://www.qt.io/contact-us.
- **
- ** BSD License Usage
- ** Alternatively, you may use this file under the terms of the BSD license
- ** as follows:
- **
- ** "Redistribution and use in source and binary forms, with or without
- ** modification, are permitted provided that the following conditions are
- ** met:
- ** * Redistributions of source code must retain the above copyright
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- ****************************************************************************/
- #include "mainwindow.h"
- #include <QUrl>
- #include <QDesktopServices>
- #include <QLabel>
- #include <QLayout>
- #include <QScreen>
- MainWindow::MainWindow(QWidget *parent)
- : QWidget(parent),
- m_titleLabel(new QLabel(this)),
- m_infoLabel(new QLabel(tr("Enable NFC"), this)),
- m_uriLabel(new QLabel(this)),
- m_landscapeIconLabel(new QLabel(this)),
- m_portraitIconLabel(new QLabel(this))
- {
- m_titleLabel->setAlignment(Qt::AlignCenter);
- m_infoLabel->setAlignment(Qt::AlignCenter);
- m_uriLabel->setAlignment(Qt::AlignCenter);
- m_landscapeIconLabel->setAlignment(Qt::AlignCenter);
- m_portraitIconLabel->setAlignment(Qt::AlignCenter);
- QFont f = m_titleLabel->font();
- f.setBold(true);
- m_titleLabel->setFont(f);
- QVBoxLayout *verticalLayout = new QVBoxLayout;
- verticalLayout->addWidget(m_titleLabel);
- verticalLayout->addWidget(m_infoLabel);
- verticalLayout->addWidget(m_portraitIconLabel);
- verticalLayout->addWidget(m_uriLabel);
- QHBoxLayout *horizontalLayout = new QHBoxLayout;
- horizontalLayout->addWidget(m_landscapeIconLabel);
- horizontalLayout->addLayout(verticalLayout);
- horizontalLayout->setSpacing(0);
- setLayout(horizontalLayout);
- handleScreenChange();
- }
- MainWindow::~MainWindow()
- {
- }
- void MainWindow::displayAnnotatedUrl(const QUrl &url, const QString &title, const QPixmap &pixmap)
- {
- m_infoLabel->setHidden(true);
- m_uriLabel->setText(url.toString());
- m_titleLabel->setText(title);
- m_pixmap = pixmap;
- updateWidgetLayout(m_screen->orientation());
- }
- void MainWindow::nfcStateChanged(bool enabled)
- {
- const QString text = enabled ? "Touch a tag" : "Enable NFC";
- m_infoLabel->setText(text);
- }
- void MainWindow::showTagError(const QString &message)
- {
- m_uriLabel->clear();
- m_titleLabel->clear();
- m_pixmap = QPixmap();
- m_landscapeIconLabel->setVisible(false);
- m_portraitIconLabel->setVisible(false);
- m_infoLabel->setHidden(false);
- m_infoLabel->setText(message);
- }
- void MainWindow::mouseReleaseEvent(QMouseEvent * /*event*/)
- {
- QDesktopServices::openUrl(QUrl(m_uriLabel->text()));
- }
- void MainWindow::moveEvent(QMoveEvent * /*event*/)
- {
- if (screen() != m_screen)
- handleScreenChange();
- }
- void MainWindow::updateWidgetLayout(Qt::ScreenOrientation orientation)
- {
- m_landscapeIconLabel->setVisible(false);
- m_portraitIconLabel->setVisible(false);
- if (!m_pixmap.isNull()) {
- const bool landscapeMode = (orientation == Qt::LandscapeOrientation)
- || (orientation == Qt::InvertedLandscapeOrientation);
- QLabel *imageLabel = landscapeMode ? m_landscapeIconLabel : m_portraitIconLabel;
- imageLabel->setVisible(true);
- if (m_pixmap.width() > imageLabel->width() || m_pixmap.height() > imageLabel->height())
- imageLabel->setPixmap(m_pixmap.scaled(imageLabel->size(), Qt::KeepAspectRatio));
- else
- imageLabel->setPixmap(m_pixmap);
- }
- }
- void MainWindow::handleScreenChange()
- {
- if (m_screen)
- disconnect(m_screen, &QScreen::orientationChanged, this, &MainWindow::updateWidgetLayout);
- m_screen = screen();
- connect(m_screen, &QScreen::orientationChanged, this, &MainWindow::updateWidgetLayout);
- updateWidgetLayout(m_screen->orientation());
- }