| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
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| ** This file is part of the examples of the Qt Toolkit. |
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| ** $QT_BEGIN_LICENSE:BSD$ |
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| ****************************************************************************/ |
| |
| #include "mainwindow.h" |
| #include "stylesheetdialog.h" |
| #include "ui_mainwindow.h" |
| |
| static QMap<QString, QString> defaultStyleSheets = { |
| {"Upside down", "body { -webkit-transform: rotate(180deg); }"} |
| }; |
| |
| MainWindow::MainWindow(const QUrl &url) : |
| QMainWindow(), |
| ui(new Ui::MainWindow) |
| { |
| ui->setupUi(this); |
| |
| connect(ui->urlBar, &QLineEdit::returnPressed, this, &MainWindow::urlEntered); |
| connect(ui->webEngineView, &QWebEngineView::urlChanged, this, &MainWindow::urlChanged); |
| connect(ui->settingsButton, &QPushButton::clicked, this, &MainWindow::showStyleSheetsDialog); |
| connect(ui->reloadButton, &QPushButton::clicked, this, &MainWindow::reloadRequested); |
| |
| QSettings settings; |
| settings.beginGroup("styleSheets"); |
| QStringList styleSheets = settings.allKeys(); |
| if (styleSheets.empty()) { |
| // Add back default style sheets if the user cleared them out |
| loadDefaultStyleSheets(); |
| } else { |
| for (auto name : qAsConst(styleSheets)) { |
| StyleSheet styleSheet = settings.value(name).value<StyleSheet>(); |
| if (styleSheet.second) |
| insertStyleSheet(name, styleSheet.first, false); |
| } |
| } |
| settings.endGroup(); |
| |
| ui->webEngineView->setUrl(url); |
| } |
| |
| MainWindow::~MainWindow() |
| { |
| delete ui; |
| } |
| |
| void MainWindow::insertStyleSheet(const QString &name, const QString &source, bool immediately) |
| { |
| QWebEngineScript script; |
| QString s = QString::fromLatin1("(function() {"\ |
| " css = document.createElement('style');"\ |
| " css.type = 'text/css';"\ |
| " css.id = '%1';"\ |
| " document.head.appendChild(css);"\ |
| " css.innerText = '%2';"\ |
| "})()").arg(name).arg(source.simplified()); |
| if (immediately) |
| ui->webEngineView->page()->runJavaScript(s, QWebEngineScript::ApplicationWorld); |
| |
| script.setName(name); |
| script.setSourceCode(s); |
| script.setInjectionPoint(QWebEngineScript::DocumentReady); |
| script.setRunsOnSubFrames(true); |
| script.setWorldId(QWebEngineScript::ApplicationWorld); |
| ui->webEngineView->page()->scripts().insert(script); |
| } |
| |
| void MainWindow::removeStyleSheet(const QString &name, bool immediately) |
| { |
| QString s = QString::fromLatin1("(function() {"\ |
| " var element = document.getElementById('%1');"\ |
| " element.outerHTML = '';"\ |
| " delete element;"\ |
| "})()").arg(name); |
| if (immediately) |
| ui->webEngineView->page()->runJavaScript(s, QWebEngineScript::ApplicationWorld); |
| |
| QWebEngineScript script = ui->webEngineView->page()->scripts().findScript(name); |
| ui->webEngineView->page()->scripts().remove(script); |
| } |
| |
| bool MainWindow::hasStyleSheet(const QString &name) |
| { |
| QWebEngineScript script = ui->webEngineView->page()->scripts().findScript(name); |
| return !script.isNull(); |
| } |
| |
| void MainWindow::loadDefaultStyleSheets() |
| { |
| QSettings settings; |
| settings.beginGroup("styleSheets"); |
| |
| auto it = defaultStyleSheets.constBegin(); |
| while (it != defaultStyleSheets.constEnd()) { |
| settings.setValue(it.key(), QVariant::fromValue(qMakePair(it.value(), true))); |
| insertStyleSheet(it.key(), it.value(), false); |
| ++it; |
| } |
| |
| settings.endGroup(); |
| } |
| |
| void MainWindow::urlEntered() |
| { |
| ui->webEngineView->setUrl(QUrl::fromUserInput(ui->urlBar->text())); |
| } |
| |
| void MainWindow::urlChanged(const QUrl &url) |
| { |
| ui->urlBar->setText(url.toString()); |
| } |
| |
| void MainWindow::showStyleSheetsDialog() |
| { |
| StylesheetDialog *dialog = new StylesheetDialog(this); |
| dialog->show(); |
| } |
| |
| void MainWindow::reloadRequested() |
| { |
| ui->webEngineView->reload(); |
| } |