From 39aff7ccefc90164390a97164419c0610ee0f360 Mon Sep 17 00:00:00 2001 From: Andrea Diamantini Date: Tue, 5 Jun 2012 09:30:27 +0200 Subject: kwebapp improvements - added password widget - improved contextual menus - added rekonq statusbar messages There are a lot of changes here, but they are quite safe as the code is somewhat duplicated by the original classes in rekonq I know the situation is suboptimal, but we need to wait for next development period to properly fix it --- kwebapp/websnap.cpp | 166 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 166 insertions(+) create mode 100644 kwebapp/websnap.cpp (limited to 'kwebapp/websnap.cpp') diff --git a/kwebapp/websnap.cpp b/kwebapp/websnap.cpp new file mode 100644 index 00000000..830d37e1 --- /dev/null +++ b/kwebapp/websnap.cpp @@ -0,0 +1,166 @@ +/* ============================================================ +* +* This file is a part of the rekonq project +* +* Copyright (C) 2009 Nokia Corporation +* Copyright (C) 2009-2012 by Andrea Diamantini +* Copyright (C) 2010 by Matthieu Gicquel +* +* +* This program is free software; you can redistribute it and/or +* modify it under the terms of the GNU General Public License as +* published by the Free Software Foundation; either version 2 of +* the License or (at your option) version 3 or any later version +* accepted by the membership of KDE e.V. (or its successor approved +* by the membership of KDE e.V.), which shall act as a proxy +* defined in Section 14 of version 3 of the license. +* +* This program is distributed in the hope that it will be useful, +* but WITHOUT ANY WARRANTY; without even the implied warranty of +* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +* GNU General Public License for more details. +* +* You should have received a copy of the GNU General Public License +* along with this program. If not, see . +* +* ============================================================ */ + + +// Self Includes +#include "websnap.h" +#include "websnap.moc" + +// KDE Includes +#include + +// Qt Includes +#include +#include + +#include + +#include +#include + +#include +#include + + +WebSnap::WebSnap(const KUrl& url, QObject *parent) + : QObject(parent) + , m_url(url) +{ + // this to not register websnap history + m_page.settings()->setAttribute(QWebSettings::PrivateBrowsingEnabled, true); + + // this to not let this page open other windows + m_page.settings()->setAttribute(QWebSettings::PluginsEnabled, false); + m_page.settings()->setAttribute(QWebSettings::JavascriptEnabled, false); + + connect(&m_page, SIGNAL(loadFinished(bool)), this, SLOT(saveResult(bool))); + + QMetaObject::invokeMethod(this, "load", Qt::QueuedConnection); +} + + +WebSnap::~WebSnap() +{ + m_page.action(QWebPage::Stop)->trigger(); + m_page.deleteLater(); +} + + +void WebSnap::load() +{ + m_page.mainFrame()->load(m_url); +} + + + +QPixmap WebSnap::render(const QWebPage &page, int w, int h) +{ + // create the page image + QPixmap pageImage = QPixmap(w, h); + pageImage.fill(Qt::transparent); + + // render it + QPainter p(&pageImage); + page.mainFrame()->render(&p, QWebFrame::ContentsLayer); + p.end(); + + return pageImage; +} + + +// NOTE +// to render page preview in a safe way, you CANNOT work with scrollbars! +// In fact, disabling temporarily them DOES NOT work without reloading a page +// that is something we CANNOT do. +QPixmap WebSnap::renderPagePreview(const QWebPage &page, int w, int h) +{ + // store actual viewportsize + QSize oldSize = page.viewportSize(); + + // prepare page + // NOTE: I saw some sites with strange CMS and with absurd content size width (eg: 8584553) + // This usually leads setViewportSize to crash :( + // So, ensure renderWidth is no more than 2000. + int renderWidth = page.mainFrame()->contentsSize().width(); + if (renderWidth > 2000) + renderWidth = 2000; + int renderHeight = renderWidth * ((0.0 + h) / w); + + page.setViewportSize(QSize(renderWidth, renderHeight)); + + // consider scrollbars and render the page + bool verticalScrollBarActive = !page.mainFrame()->scrollBarGeometry(Qt::Vertical).isEmpty(); + if (verticalScrollBarActive) + renderWidth -= 15; + + bool horizontalScrollBarActive = !page.mainFrame()->scrollBarGeometry(Qt::Horizontal).isEmpty(); + if (horizontalScrollBarActive) + renderHeight -= 15; + + QPixmap pageImage = WebSnap::render(page, renderWidth, renderHeight); + + // resize image + pageImage = pageImage.scaled(w, h, Qt::KeepAspectRatioByExpanding, Qt::SmoothTransformation); + + // restore page state + page.setViewportSize(oldSize); + + return pageImage; +} + + +QString WebSnap::imagePathFromUrl(const KUrl &url) +{ + QUrl temp = QUrl(url.url()); + QByteArray name = temp.toEncoded(QUrl::RemoveScheme | QUrl::RemoveUserInfo | QUrl::StripTrailingSlash); + + QByteArray hashedName = QCryptographicHash::hash(name, QCryptographicHash::Md5).toHex(); + + return KStandardDirs::locateLocal("cache", QString("thumbs/") + hashedName + ".png", true); +} + + +void WebSnap::saveResult(bool ok) +{ + if (ok) + { + QPixmap image = renderPagePreview(m_page, defaultWidth, defaultHeight); + QString path = imagePathFromUrl(m_url); + QFile::remove(path); + image.save(path); + } + + emit snapDone(ok); + + this->deleteLater(); +} + + +bool WebSnap::existsImage(const KUrl &u) +{ + return QFile::exists(imagePathFromUrl(u)); +} -- cgit v1.2.1