1 files changed, 151 insertions, 0 deletions
diff --git a/desktop-widgets/usermanual.cpp b/desktop-widgets/usermanual.cpp
new file mode 100644
index 000000000..6b676f16b
--- /dev/null
+++ b/desktop-widgets/usermanual.cpp
@@ -0,0 +1,151 @@
+#include <QDesktopServices>
+#include <QShortcut>
+#include <QFile>
+
+#include "usermanual.h"
+#include "mainwindow.h"
+#include "helpers.h"
+
+SearchBar::SearchBar(QWidget *parent): QWidget(parent)
+{
+	ui.setupUi(this);
+	#if defined(Q_OS_MAC) || defined(Q_OS_WIN)
+	ui.findNext->setIcon(QIcon(":icons/subsurface/32x32/actions/go-down.png"));
+	ui.findPrev->setIcon(QIcon(":icons/subsurface/32x32/actions/go-up.png"));
+	ui.findClose->setIcon(QIcon(":icons/subsurface/32x32/actions/window-close.png"));
+	#endif
+
+	connect(ui.findNext, SIGNAL(pressed()), this, SIGNAL(searchNext()));
+	connect(ui.findPrev, SIGNAL(pressed()), this, SIGNAL(searchPrev()));
+	connect(ui.searchEdit, SIGNAL(textChanged(QString)), this, SIGNAL(searchTextChanged(QString)));
+	connect(ui.searchEdit, SIGNAL(textChanged(QString)), this, SLOT(enableButtons(QString)));
+	connect(ui.findClose, SIGNAL(pressed()), this, SLOT(hide()));
+}
+
+void SearchBar::setVisible(bool visible)
+{
+	QWidget::setVisible(visible);
+	ui.searchEdit->setFocus();
+}
+
+void SearchBar::enableButtons(const QString &s)
+{
+	ui.findPrev->setEnabled(s.length());
+	ui.findNext->setEnabled(s.length());
+}
+
+UserManual::UserManual(QWidget *parent) : QWidget(parent)
+{
+	QShortcut *closeKey = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
+	connect(closeKey, SIGNAL(activated()), this, SLOT(close()));
+	QShortcut *quitKey = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	connect(quitKey, SIGNAL(activated()), qApp, SLOT(quit()));
+
+	QAction *actionShowSearch = new QAction(this);
+	actionShowSearch->setShortcut(Qt::CTRL + Qt::Key_F);
+	actionShowSearch->setShortcutContext(Qt::WindowShortcut);
+	addAction(actionShowSearch);
+
+	QAction *actionHideSearch = new QAction(this);
+	actionHideSearch->setShortcut(Qt::Key_Escape);
+	actionHideSearch->setShortcutContext(Qt::WindowShortcut);
+	addAction(actionHideSearch);
+
+	setWindowTitle(tr("User manual"));
+	setWindowIcon(QIcon(":/subsurface-icon"));
+
+	userManual = new QWebView(this);
+	QString colorBack = palette().highlight().color().name(QColor::HexRgb);
+	QString colorText = palette().highlightedText().color().name(QColor::HexRgb);
+	userManual->setStyleSheet(QString("QWebView { selection-background-color: %1; selection-color: %2; }")
+		.arg(colorBack).arg(colorText));
+	userManual->page()->setLinkDelegationPolicy(QWebPage::DelegateExternalLinks);
+	QString searchPath = getSubsurfaceDataPath("Documentation");
+	if (searchPath.size()) {
+		// look for localized versions of the manual first
+		QString lang = uiLanguage(NULL);
+		QString prefix = searchPath.append("/user-manual");
+		QFile manual(prefix + "_" + lang + ".html");
+		if (!manual.exists())
+			manual.setFileName(prefix + "_" + lang.left(2) + ".html");
+		if (!manual.exists())
+			manual.setFileName(prefix + ".html");
+		if (!manual.exists()) {
+			userManual->setHtml(tr("Cannot find the Subsurface manual"));
+		} else {
+			QString urlString = QString("file:///") + manual.fileName();
+			userManual->setUrl(QUrl(urlString, QUrl::TolerantMode));
+		}
+	} else {
+		userManual->setHtml(tr("Cannot find the Subsurface manual"));
+	}
+
+	searchBar = new SearchBar(this);
+	searchBar->hide();
+	connect(actionShowSearch, SIGNAL(triggered(bool)), searchBar, SLOT(show()));
+	connect(actionHideSearch, SIGNAL(triggered(bool)), searchBar, SLOT(hide()));
+	connect(userManual, SIGNAL(linkClicked(QUrl)), this, SLOT(linkClickedSlot(QUrl)));
+	connect(searchBar, SIGNAL(searchTextChanged(QString)), this, SLOT(searchTextChanged(QString)));
+	connect(searchBar, SIGNAL(searchNext()), this, SLOT(searchNext()));
+	connect(searchBar, SIGNAL(searchPrev()), this, SLOT(searchPrev()));
+
+	QVBoxLayout *vboxLayout = new QVBoxLayout();
+	userManual->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Expanding);
+	vboxLayout->addWidget(userManual);
+	vboxLayout->addWidget(searchBar);
+	setLayout(vboxLayout);
+}
+
+void UserManual::search(QString text, QWebPage::FindFlags flags = 0)
+{
+	if (userManual->findText(text, QWebPage::FindWrapsAroundDocument | flags) || text.length() == 0) {
+		searchBar->setStyleSheet("");
+	} else {
+		searchBar->setStyleSheet("QLineEdit{background: red;}");
+	}
+}
+
+void UserManual::searchTextChanged(const QString& text)
+{
+	mLastText = text;
+	search(text);
+}
+
+void UserManual::searchNext()
+{
+	search(mLastText);
+}
+
+void UserManual::searchPrev()
+{
+	search(mLastText, QWebPage::FindBackward);
+}
+
+void UserManual::linkClickedSlot(const QUrl& url)
+{
+	QDesktopServices::openUrl(url);
+}
+
+#ifdef Q_OS_MAC
+void UserManual::showEvent(QShowEvent *e) {
+	filterAction = NULL;
+	closeAction = NULL;
+	MainWindow *m = MainWindow::instance();
+	Q_FOREACH (QObject *o, m->children()) {
+		if (o->objectName() == "actionFilterTags") {
+			filterAction = qobject_cast<QAction*>(o);
+			filterAction->setShortcut(QKeySequence());
+		} else if (o->objectName() == "actionClose") {
+			closeAction  = qobject_cast<QAction*>(o);
+			closeAction->setShortcut(QKeySequence());
+		}
+	}
+}
+void UserManual::hideEvent(QHideEvent *e) {
+	if (closeAction != NULL)
+		closeAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_W));
+	if (filterAction != NULL)
+		filterAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_F));
+	closeAction = filterAction = NULL;
+}
+#endif