1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
/* ============================================================
*
* This file is a part of the rekonq project
*
* Copyright (C) 2009 Nokia Corporation <qt-info@nokia.com>
* Copyright (C) 2009 by Andrea Diamantini <adjam7 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/>.
*
* ============================================================ */
#include "websnap.h"
#include "websnap.moc"
#include <KDebug>
#include <KStandardDirs>
#include <QSize>
#include <QWebFrame>
#include <QWebSettings>
#include <QPainter>
#include <QTimer>
#include <QFile>
#define WIDTH 200
#define HEIGHT 150
WebSnap::WebSnap(const QUrl &url)
: QObject()
{
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)));
QTimer::singleShot(0, this, SLOT(load()));
}
void WebSnap::load()
{
m_page.mainFrame()->load(m_url);
}
QPixmap WebSnap::renderPreview(const QWebPage &page,int w, int h)
{
// prepare page
page.mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff); //Why it doesn't work with one setScrollBarPolicy ? bug in qtwebkit ?
page.mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);
page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
// find the best size
QSize size;
if (page.viewportSize().width() && page.viewportSize().height())
{
size = page.viewportSize();
}
else
{
int width = page.mainFrame()->contentsSize().width();
if (width < 640) width = 640;
size = QSize(width,width*((0.0+h)/w));
page.setViewportSize(size);
}
// create the target surface
QPixmap image = QPixmap(size);
image.fill(Qt::transparent);
// render
QPainter p(&image);
page.mainFrame()->render(&p);
p.end();
image = image.scaled(w, h, Qt::KeepAspectRatioByExpanding, Qt::SmoothTransformation);
// restore page settings
page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAsNeeded);
page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAsNeeded);
page.mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAsNeeded);
page.mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAsNeeded);
return image;
}
void WebSnap::saveResult(bool ok)
{
// crude error-checking
if (!ok)
{
kDebug() << "Error loading site..";
return;
}
m_image = renderPreview(m_page, WIDTH, HEIGHT);
emit finished();
}
QPixmap WebSnap::previewImage()
{
return m_image;
}
|
