283 lines
9.8 KiB
C++
283 lines
9.8 KiB
C++
// 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 "gui/webbrowser.h"
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#include "core/defs.h"
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#include "core/webbrowsernetworkaccessmanager.h"
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#include "core/webpage.h"
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#include "gui/skinfactory.h"
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#include "gui/webview.h"
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#include "gui/formmain.h"
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#include "gui/iconthemefactory.h"
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#include "gui/tabwidget.h"
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#include <QVBoxLayout>
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#include <QHBoxLayout>
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#include <QToolBar>
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#include <QAction>
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#include <QWebFrame>
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#include <QWidgetAction>
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#include <QSlider>
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#include <QLabel>
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#include <QProgressBar>
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#include <QToolButton>
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QList<WebBrowser*> WebBrowser::m_runningWebBrowsers;
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WebBrowser::WebBrowser(QWidget *parent)
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: TabContent(parent),
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m_layout(new QVBoxLayout(this)),
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m_toolBar(new QToolBar(tr("Navigation panel"), this)),
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m_webView(new WebView(this)),
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m_txtLocation(new LocationLineEdit(this)),
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m_actionBack(m_webView->pageAction(QWebPage::Back)),
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m_actionForward(m_webView->pageAction(QWebPage::Forward)),
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m_actionReload(m_webView->pageAction(QWebPage::Reload)),
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m_actionStop(m_webView->pageAction(QWebPage::Stop)),
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m_activeNewspaperMode(false) {
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m_index = -1;
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// Add this new instance to the global list of web browsers.
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// NOTE: This is used primarily for dynamic icon theme switching.
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m_runningWebBrowsers.append(this);
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// Initialize the components and layout.
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initializeLayout();
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setTabOrder(m_txtLocation, m_toolBar);
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setTabOrder(m_toolBar, m_webView);
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createConnections();
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initializeZoomWidget();
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}
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void WebBrowser::initializeZoomWidget() {
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// Initializations.
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m_zoomButtons = new QWidget(this);
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QLabel *zoom_label = new QLabel(tr("Zoom "), m_zoomButtons);
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QHBoxLayout *layout = new QHBoxLayout(m_zoomButtons);
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QToolButton *button_decrease = new QToolButton(m_zoomButtons);
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m_btnResetZoom = new QToolButton(m_zoomButtons);
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QToolButton *button_increase = new QToolButton(m_zoomButtons);
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// Set texts.
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button_decrease->setText("-");
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button_decrease->setToolTip(tr("Decrease zoom."));
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m_btnResetZoom->setText("100%");
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m_btnResetZoom->setToolTip(tr("Reset zoom to default."));
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button_increase->setText("+");
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button_increase->setToolTip(tr("Increase zoom."));
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// Setup layout.
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layout->addWidget(zoom_label);
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layout->addWidget(button_decrease);
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layout->addWidget(m_btnResetZoom);
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layout->addWidget(button_increase);
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layout->setSpacing(2);
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layout->setMargin(3);
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m_zoomButtons->setLayout(layout);
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// Make connections..
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connect(button_increase, SIGNAL(clicked()), this, SLOT(increaseZoom()));
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connect(button_decrease, SIGNAL(clicked()), this, SLOT(decreaseZoom()));
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connect(m_btnResetZoom, SIGNAL(clicked()), this, SLOT(resetZoom()));
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m_actionZoom = new QWidgetAction(this);
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m_actionZoom->setDefaultWidget(m_zoomButtons);
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}
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void WebBrowser::initializeLayout() {
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m_toolBar->setFloatable(false);
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m_toolBar->setMovable(false);
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m_toolBar->setAllowedAreas(Qt::TopToolBarArea);
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// Modify action texts.
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m_actionBack->setText(tr("Back"));
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m_actionBack->setToolTip(tr("Go back."));
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m_actionForward->setText(tr("Forward"));
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m_actionForward->setToolTip(tr("Go forward."));
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m_actionReload->setText(tr("Reload"));
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m_actionReload->setToolTip(tr("Reload current web page."));
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m_actionStop->setText(tr("Stop"));
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m_actionStop->setToolTip(tr("Stop web page loading."));
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// Add needed actions into toolbar.
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m_toolBar->addAction(m_actionBack);
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m_toolBar->addAction(m_actionForward);
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m_toolBar->addAction(m_actionReload);
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m_toolBar->addAction(m_actionStop);
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m_toolBar->addWidget(m_txtLocation);
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// Initialize dynamic progress bar which will be displayed
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// at the bottom of web browser.
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m_lblProgress = new QLabel(this);
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m_loadingProgress = new QProgressBar(this);
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m_loadingProgress->setFixedHeight(15);
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m_loadingProgress->setMinimum(0);
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m_loadingProgress->setMaximum(100);
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m_loadingProgress->setVisible(true);
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m_loadingLayout = new QHBoxLayout();
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m_loadingLayout->setMargin(0);
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m_loadingLayout->addWidget(m_lblProgress, 0, Qt::AlignLeft|Qt::AlignVCenter);
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m_loadingProgress->setLayout(m_loadingLayout);
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// Setup layout.
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m_layout->addWidget(m_toolBar);
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m_layout->addWidget(m_webView);
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m_layout->addWidget(m_loadingProgress);
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m_layout->setMargin(0);
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m_layout->setSpacing(0);
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}
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void WebBrowser::onLoadingStarted() {
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}
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void WebBrowser::onLoadingProgress(int progress) {
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m_txtLocation->setProgress(progress);
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}
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void WebBrowser::onLoadingFinished(bool success) {
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m_txtLocation->clearProgress();
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}
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void WebBrowser::createConnections() {
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// When user confirms new url, then redirect to it.
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connect(m_txtLocation,SIGNAL(submitted(QString)), this, SLOT(navigateToUrl(QString)));
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// If new page loads, then update current url.
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connect(m_webView, SIGNAL(urlChanged(QUrl)), this, SLOT(updateUrl(QUrl)));
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// Connect this WebBrowser to global TabWidget.
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TabWidget *tab_widget = FormMain::instance()->tabWidget();
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connect(m_webView, SIGNAL(newTabRequested()), tab_widget, SLOT(addEmptyBrowser()));
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connect(m_webView, SIGNAL(linkMiddleClicked(QUrl)), tab_widget, SLOT(addLinkedBrowser(QUrl)));
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// Change location textbox status according to webpage status.
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connect(m_webView, SIGNAL(loadStarted()), this, SLOT(onLoadingStarted()));
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connect(m_webView, SIGNAL(loadProgress(int)), this, SLOT(onLoadingProgress(int)));
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connect(m_webView, SIGNAL(loadFinished(bool)), this, SLOT(onLoadingFinished(bool)));
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// Forward title/icon changes.
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connect(m_webView, SIGNAL(titleChanged(QString)), this, SLOT(onTitleChanged(QString)));
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connect(m_webView, SIGNAL(iconChanged()), this, SLOT(onIconChanged()));
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// Misc connections.
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connect(m_webView, SIGNAL(zoomFactorChanged()), this, SLOT(updateZoomGui()));
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}
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void WebBrowser::onIconChanged() {
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emit iconChanged(m_index, m_webView->icon());
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}
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void WebBrowser::onTitleChanged(const QString &new_title) {
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if (new_title.isEmpty()) {
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//: Webbrowser tab title when no title is available.
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emit titleChanged(m_index, tr("No title"));
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}
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else {
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emit titleChanged(m_index, new_title);
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}
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}
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void WebBrowser::updateUrl(const QUrl &url) {
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m_txtLocation->setText(url.toString());
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}
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void WebBrowser::navigateToUrl(const QUrl &url) {
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if (url.isValid()) {
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m_webView->load(url);
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}
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}
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void WebBrowser::navigateToMessages(const QList<Message> &messages) {
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SkinFactory *factory = SkinFactory::instance();
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QString messages_layout;
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QString single_message_layout = factory->currentMarkup();
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foreach (const Message &message, messages) {
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messages_layout.append(single_message_layout.arg(message.m_title,
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tr("Written by ") + (message.m_author.isEmpty() ?
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tr("uknown author") :
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message.m_author),
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message.m_url,
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message.m_contents,
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message.m_created.toString(Qt::DefaultLocaleShortDate)));
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}
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QString layout_wrapper = factory->currentMarkupLayout().arg(messages.size() == 1 ?
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messages.at(0).m_title :
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tr("Newspaper view"),
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messages_layout);
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m_webView->setHtml(layout_wrapper, QUrl(INTERNAL_URL_NEWSPAPER));
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emit iconChanged(m_index,
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IconThemeFactory::instance()->fromTheme("item-newspaper"));
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}
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void WebBrowser::updateZoomGui() {
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m_btnResetZoom->setText(QString("%1%").arg(QString::number(m_webView->zoomFactor() * 100,
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'f',
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0)));
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}
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void WebBrowser::increaseZoom() {
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m_webView->increaseWebPageZoom();
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updateZoomGui();
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}
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void WebBrowser::decreaseZoom() {
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m_webView->decreaseWebPageZoom();
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updateZoomGui();
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}
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void WebBrowser::resetZoom() {
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m_webView->resetWebPageZoom();
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updateZoomGui();
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}
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void WebBrowser::navigateToUrl(const QString &textual_url) {
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// Prepare input url.
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QString better_url = textual_url;
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better_url = better_url.replace('\\', '/');
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navigateToUrl(QUrl::fromUserInput(better_url));
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}
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WebBrowser::~WebBrowser() {
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qDebug("Destroying WebBrowser instance.");
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// Remove this instance from the global list of web browsers.
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m_runningWebBrowsers.removeAll(this);
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// Delete members.
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delete m_layout;
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delete m_zoomButtons;
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delete m_actionZoom;
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}
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void WebBrowser::setupIcons() {
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m_actionBack->setIcon(IconThemeFactory::instance()->fromTheme("go-previous"));
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m_actionForward->setIcon(IconThemeFactory::instance()->fromTheme("go-next"));
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m_actionReload->setIcon(IconThemeFactory::instance()->fromTheme("go-refresh"));
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m_actionStop->setIcon(IconThemeFactory::instance()->fromTheme("go-stop"));
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m_webView->setupIcons();
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}
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