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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
/*
* Copyright (C) 2013 Open Education Foundation
*
* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
* l'Education Numérique en Afrique (GIP ENA)
*
* This file is part of OpenBoard.
*
* OpenBoard 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, version 3 of the License,
* with a specific linking exception for the OpenSSL project's
* "OpenSSL" library (or with modified versions of it that use the
* same license as the "OpenSSL" library).
*
* OpenBoard 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 OpenBoard. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QtGui>
#include <QAction>
#include "UBWebPluginPDFWidget.h"
#include "XPDFRenderer.h"
#include "core/memcheck.h"
UBWebPluginPDFWidget::UBWebPluginPDFWidget(const QUrl &url, QWidget *parent)
: UBWebPluginWidget(url, parent)
, mPreviousPageButton(this)
, mNextPageButton(this)
, mPreviousPageAction(0)
, mNextPageAction(0)
, mRenderer(0)
, mScale(1.5)
, mPageNumber(1)
{
QIcon previousPageIcon;
QIcon nextPageIcon;
previousPageIcon.addFile(":/images/toolbar/previousPage.png", QSize(32, 32), QIcon::Normal);
nextPageIcon.addFile(":/images/toolbar/nextPage.png", QSize(32, 32), QIcon::Normal);
mPreviousPageAction = new QAction(previousPageIcon, QString(), this);
mNextPageAction = new QAction(nextPageIcon, QString(), this);
connect(mPreviousPageAction, SIGNAL(triggered()), this, SLOT(previousPage()));
connect(mNextPageAction, SIGNAL(triggered()), this, SLOT(nextPage()));
mPreviousPageButton.setFixedSize(32, 32);
mNextPageButton.setFixedSize(32, 32);
mPreviousPageButton.setDefaultAction(mPreviousPageAction);
mNextPageButton.setDefaultAction(mNextPageAction);
mNextPageButton.move(mPreviousPageButton.x() + mPreviousPageButton.width() + 10, mNextPageButton.y());
}
UBWebPluginPDFWidget::~UBWebPluginPDFWidget()
{
if (mRenderer)
{
delete mRenderer;
}
}
void UBWebPluginPDFWidget::handleFile(const QString &filePath)
{
mRenderer = new XPDFRenderer(filePath);
}
void UBWebPluginPDFWidget::keyReleaseEvent(QKeyEvent *keyEvent)
{
// TOOD: why is it not called?
switch (keyEvent->key())
{
case Qt::Key_Right:
if (nextPage())
{
keyEvent->accept();
}
break;
case Qt::Key_Left:
if (previousPage())
{
keyEvent->accept();
}
break;
default:
break;
}
}
bool UBWebPluginPDFWidget::previousPage()
{
if (mPageNumber > 1)
{
mPageNumber--;
update();
return true;
}
return false;
}
bool UBWebPluginPDFWidget::nextPage()
{
if (mPageNumber < mRenderer->pageCount())
{
mPageNumber++;
update();
return true;
}
return false;
}
void UBWebPluginPDFWidget::zoomIn()
{
mScale *= 1.41;
update();
}
void UBWebPluginPDFWidget::zoomOut()
{
mScale /= 1.41;
update();
}
void UBWebPluginPDFWidget::paintEvent(QPaintEvent *event)
{
QPainter painter(this);
if (!mRenderer)
{
// PDF not yet downloaded
return;
}
if (!mRenderer->isValid())
{
qWarning("UBWebPluginPDFWidget::paintEvent: Invalid renderer");
return;
}
QSizeF pageSize = mRenderer->pageSizeF(mPageNumber);
painter.translate((geometry().width() - (pageSize.width() * mScale)) / 2, 0);
painter.scale(mScale, mScale);
mRenderer->render(&painter, mPageNumber, event->rect());
painter.setPen(QPen(Qt::gray, 1));
painter.drawRect(0, 0, pageSize.width(), pageSize.height());
}
QString UBWebPluginPDFWidget::title() const
{
if (mRenderer)
{
return mRenderer->title();
}
else
{
return UBWebPluginWidget::title();
}
}