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/* ============================================================
*
* This file is a part of the rekonq project
*
* Copyright (C) 2009-2012 by Andrea Diamantini <adjam7 at gmail dot com>
* Copyright (C) 2010 by Matthieu Gicquel <matgic78 at gmail dot com>
*
*
* 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 <http://www.gnu.org/licenses/>.
*
* ============================================================ */
#ifndef WEB_SNAP_H
#define WEB_SNAP_H
// Rekonq Includes
#include "rekonq_defines.h"
// Qt Includes
#include <QObject>
#include <QWebPage>
#include <QUrl>
// Forward Declarations
class QPixmap;
/**
* This class is used in many classes of rekonq to produce an image
* based on the site corresponding to the url passed as argument.
* It also cached the images to not retrieve them every time :)
*
* Heavily based on Graphics-Dojo WebSnap example (thanks!)
*
* We use this in the following rekonq classes:
*
* - TabBar class: to show a tab preview (given a page, you show AND save an image)
* - PreviewSelector class: to save new favorite selection (given a page, you show AND save an image)
*
* - NewTabPage class: to show the favorites page "preview" (given an url, you show AND save an image)
*
*/
class WebSnap : public QObject
{
Q_OBJECT
public:
/**
* Creates a WebSnap object. It will load the url in one WebPage
* and snap an image from it.
*
* @param url the url to load
* @param parent the object parent
*/
explicit WebSnap(const QUrl &url, QObject *parent = 0);
~WebSnap();
/**
* Snaps a pixmap of size w * h from a page
*
* @param page the page to snap
* @param w the image width
* @param h the image height
*
* @return the pixmap snapped from the page
*/
static QPixmap renderPagePreview(const QWebPage &page, int w = defaultWidth, int h = defaultHeight);
/**
* Guess the local path where the image for the url provided
* should be
*
* @param url the url to guess snap path
*
* @return the local path of the url snap
*/
static QString imagePathFromUrl(const QUrl &url);
/**
* Determines if a snap exists for that url
*
*/
static bool existsImage(const QUrl &url);
private Q_SLOTS:
void saveResult(bool ok = true);
void load();
Q_SIGNALS:
void snapDone(bool ok);
private:
// Constants
static const int defaultWidth = 200;
static const int defaultHeight = 150;
QWebPage m_page;
QUrl m_url;
//render a preview: common part of renderPagePreview() and renderTabPreview()
static QPixmap render(const QWebPage &page, int w, int h);
};
#endif // WEB_SNAP_H
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