314 lines
10 KiB
C++
Executable File
314 lines
10 KiB
C++
Executable File
// This file is part of RSS Guard.
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//
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// Copyright (C) 2011-2014 by Martin Rotter <rotter.martinos@gmail.com>
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//
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// RSS Guard is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// RSS Guard is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with RSS Guard. If not, see <http://www.gnu.org/licenses/>.
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#include "network-web/webview.h"
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#include "definitions/definitions.h"
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#include "miscellaneous/settings.h"
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#include "miscellaneous/skinfactory.h"
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#include "miscellaneous/iconfactory.h"
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#include "network-web/webpage.h"
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#include <QStyleOptionFrameV3>
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#include <QAction>
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#include <QMenu>
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#include <QDir>
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#include <QFile>
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#include <QWebFrame>
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#include <QContextMenuEvent>
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#include <QDateTime>
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#include <QClipboard>
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WebView::WebView(QWidget *parent)
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: QWebView(parent), m_page(new WebPage(this)) {
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setPage(m_page);
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setContextMenuPolicy(Qt::CustomContextMenu);
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initializeActions();
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createConnections();
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}
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WebView::~WebView() {
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qDebug("Destroying BaseWebView.");
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}
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void WebView::onLoadFinished(bool ok) {
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// If page was not loaded, then display custom error page.
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if (!ok) {
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displayErrorPage();
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}
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}
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void WebView::copySelectedText() {
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Application::clipboard()->setText(selectedText());
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}
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void WebView::openLinkInNewTab() {
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emit linkMiddleClicked(m_contextLinkUrl);
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}
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void WebView::openImageInNewTab() {
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emit linkMiddleClicked(m_contextImageUrl);
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}
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void WebView::createConnections() {
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connect(this, SIGNAL(loadFinished(bool)), this, SLOT(onLoadFinished(bool)));
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connect(this, SIGNAL(customContextMenuRequested(QPoint)),
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this, SLOT(popupContextMenu(QPoint)));
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connect(m_actionOpenLinkNewTab, SIGNAL(triggered()), this, SLOT(openLinkInNewTab()));
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connect(m_actionOpenImageNewTab, SIGNAL(triggered()), this, SLOT(openImageInNewTab()));
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}
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void WebView::setupIcons() {
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m_actionReload->setIcon(qApp->icons()->fromTheme("go-refresh"));
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m_actionCopySelectedItem->setIcon(qApp->icons()->fromTheme("edit-copy"));
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m_actionCopyLink->setIcon(qApp->icons()->fromTheme("edit-copy"));
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m_actionCopyImage->setIcon(qApp->icons()->fromTheme("edit-copy-image"));
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#if QT_VERSION >= 0x040800
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m_actionCopyImageUrl->setIcon(qApp->icons()->fromTheme("edit-copy"));
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#endif
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m_actionOpenLinkThisTab->setIcon(qApp->icons()->fromTheme("text-html"));
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m_actionOpenLinkNewTab->setIcon(qApp->icons()->fromTheme("text-html"));
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m_actionOpenImageNewTab->setIcon(qApp->icons()->fromTheme("edit-copy-image"));
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}
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void WebView::initializeActions() {
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// Create needed actions.
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m_actionReload = pageAction(QWebPage::Reload);
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m_actionReload->setParent(this);
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m_actionReload->setText(tr("Reload web page"));
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m_actionReload->setToolTip(tr("Reload current web page."));
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m_actionCopySelectedItem = pageAction(QWebPage::Copy);
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m_actionCopySelectedItem->setParent(this);
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m_actionCopySelectedItem->setText(tr("Copy selection"));
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m_actionCopySelectedItem->setToolTip(tr("Copies current selection into the clipboard."));
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#if defined(Q_OS_OS2)
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m_actionCopySelectedItem->setShortcut(QKeySequence::Copy);
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addAction(m_actionCopySelectedItem);
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#endif
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m_actionCopyLink = pageAction(QWebPage::CopyLinkToClipboard);
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m_actionCopyLink->setParent(this);
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m_actionCopyLink->setText(tr("Copy link url"));
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m_actionCopyLink->setToolTip(tr("Copy link url to clipboard."));
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m_actionCopyImage = pageAction(QWebPage::CopyImageToClipboard);
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m_actionCopyImage->setParent(this);
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m_actionCopyImage->setText(tr("Copy image"));
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m_actionCopyImage->setToolTip(tr("Copy image to clipboard."));
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#if QT_VERSION >= 0x040800
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m_actionCopyImageUrl = pageAction(QWebPage::CopyImageUrlToClipboard);
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m_actionCopyImageUrl->setParent(this);
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m_actionCopyImageUrl->setText(tr("Copy image url"));
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m_actionCopyImageUrl->setToolTip(tr("Copy image url to clipboard."));
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#endif
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m_actionOpenLinkNewTab = pageAction(QWebPage::OpenLinkInNewWindow);
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m_actionOpenLinkNewTab->setParent(this);
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m_actionOpenLinkNewTab->setText(tr("Open link in new tab"));
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m_actionOpenLinkNewTab->setToolTip(tr("Open this hyperlink in new tab."));
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m_actionOpenLinkThisTab = pageAction(QWebPage::OpenLink);
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m_actionOpenLinkThisTab->setParent(this);
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m_actionOpenLinkThisTab->setText(tr("Follow link"));
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m_actionOpenLinkThisTab->setToolTip(tr("Open the hyperlink in this tab."));
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m_actionOpenImageNewTab = pageAction(QWebPage::OpenImageInNewWindow);
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m_actionOpenImageNewTab->setParent(this);
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m_actionOpenImageNewTab->setText(tr("Open image in new tab"));
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m_actionOpenImageNewTab->setToolTip(tr("Open this image in this tab."));
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}
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void WebView::displayErrorPage() {
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setHtml(qApp->skins()->currentMarkupLayout().arg(
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tr("Error page"),
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qApp->skins()->currentMarkup().arg(tr("Page not found"),
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tr("Check your internet connection or website address"),
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QString(),
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tr("This failure can be caused by:<br><ul>"
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"<li>non-functional internet connection,</li>"
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"<li>incorrect website address,</li>"
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"<li>bad proxy server settings,</li>"
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"<li>target destination outage,</li>"
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"<li>many other things.</li>"
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"</ul>"),
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QDateTime::currentDateTime().toString(Qt::DefaultLocaleLongDate))));
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}
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void WebView::popupContextMenu(const QPoint &pos) {
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QMenu context_menu(tr("Web browser"), this);
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QMenu image_submenu(tr("Image"), &context_menu);
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QMenu link_submenu(tr("Hyperlink"), this);
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QWebHitTestResult hit_result = page()->mainFrame()->hitTestContent(pos);
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image_submenu.setIcon(qApp->icons()->fromTheme("image-generic"));
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link_submenu.setIcon(qApp->icons()->fromTheme("text-html"));
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// Assemble the menu from actions.
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context_menu.addAction(m_actionReload);
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context_menu.addAction(m_actionCopySelectedItem);
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QUrl hit_url = hit_result.linkUrl();
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QUrl hit_image_url = hit_result.imageUrl();
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if (hit_url.isValid()) {
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m_contextLinkUrl = hit_url;
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context_menu.addMenu(&link_submenu);
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link_submenu.addAction(m_actionOpenLinkThisTab);
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link_submenu.addAction(m_actionOpenLinkNewTab);
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link_submenu.addAction(m_actionCopyLink);
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}
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if (!hit_result.pixmap().isNull()) {
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// Add 'Image' menu, because if user clicked image it needs to be visible.
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context_menu.addMenu(&image_submenu);
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if (hit_image_url.isValid()) {
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m_contextImageUrl = hit_image_url;
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image_submenu.addAction(m_actionOpenImageNewTab);
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#if QT_VERSION >= 0x040800
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image_submenu.addAction(m_actionCopyImageUrl);
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#endif
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}
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image_submenu.addAction(m_actionCopyImage);
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}
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// Display the menu.
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context_menu.exec(mapToGlobal(pos));
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}
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void WebView::mousePressEvent(QMouseEvent *event) {
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if (event->button() & Qt::LeftButton && event->modifiers() & Qt::ControlModifier) {
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QWebHitTestResult hit_result = page()->mainFrame()->hitTestContent(event->pos());
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// Check if user clicked with middle mouse button on some
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// hyperlink.
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QUrl link_url = hit_result.linkUrl();
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QUrl image_url = hit_result.imageUrl();
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if (link_url.isValid()) {
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emit linkMiddleClicked(link_url);
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// No more handling of event is now needed. Return.
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return;
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}
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else if (image_url.isValid()) {
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emit linkMiddleClicked(image_url);
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return;
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}
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}
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else if (event->button() & Qt::MiddleButton) {
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m_gestureOrigin = event->pos();
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return;
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}
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QWebView::mousePressEvent(event);
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}
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void WebView::mouseReleaseEvent(QMouseEvent *event) {
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if (event->button() & Qt::MiddleButton) {
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bool are_gestures_enabled = qApp->settings()->value(APP_CFG_BROWSER,
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"gestures_enabled",
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true).toBool();
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if (are_gestures_enabled) {
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QPoint release_point = event->pos();
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int left_move = m_gestureOrigin.x() - release_point.x();
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int right_move = -left_move;
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int top_move = m_gestureOrigin.y() - release_point.y();
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int bottom_move = -top_move;
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int total_max = qMax(qMax(qMax(left_move, right_move),
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qMax(top_move, bottom_move)),
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40);
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if (total_max == left_move) {
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back();
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}
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else if (total_max == right_move) {
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forward();
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}
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else if (total_max == top_move) {
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reload();
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}
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else if (total_max == bottom_move) {
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emit newTabRequested();
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}
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}
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}
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QWebView::mouseReleaseEvent(event);
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}
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void WebView::wheelEvent(QWheelEvent *event) {
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if (event->modifiers() & Qt::ControlModifier) {
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if (event->delta() > 0) {
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increaseWebPageZoom();
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emit zoomFactorChanged();
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return;
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}
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else if (event->delta() < 0) {
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decreaseWebPageZoom();
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emit zoomFactorChanged();
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return;
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}
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}
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QWebView::wheelEvent(event);
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}
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bool WebView::increaseWebPageZoom() {
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qreal new_factor = zoomFactor() + 0.1;
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if (new_factor >= 0.0 && new_factor <= MAX_ZOOM_FACTOR) {
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setZoomFactor(new_factor);
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return true;
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}
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else {
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return false;
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}
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}
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bool WebView::decreaseWebPageZoom() {
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qreal new_factor = zoomFactor() - 0.1;
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if (new_factor >= 0.0 && new_factor <= MAX_ZOOM_FACTOR) {
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setZoomFactor(new_factor);
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return true;
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}
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else {
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return false;
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}
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}
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bool WebView::resetWebPageZoom() {
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qreal new_factor = 1.0;
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if (new_factor != zoomFactor()) {
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setZoomFactor(new_factor);
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return true;
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}
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else {
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return false;
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}
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}
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