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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
/*
Copyright 2015 Adam Reichold
This file is part of qpdfview.
qpdfview 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) any later version.
qpdfview 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 qpdfview. If not, see <http://www.gnu.org/licenses/>.
*/
#include "imagemodel.h"
#include <QDebug>
#include <QImageWriter>
namespace
{
using namespace qpdfview;
using namespace qpdfview::Model;
inline qreal dotsPerInchX(const QImage& image)
{
return 0.0254 * image.dotsPerMeterX();
}
inline qreal dotsPerInchY(const QImage& image)
{
return 0.0254 * image.dotsPerMeterY();
}
} // anonymous
namespace qpdfview
{
namespace Model
{
ImagePage::ImagePage(const QImage& image) :
m_image(image)
{
}
QSizeF ImagePage::size() const
{
return QSizeF(m_image.width() * 72.0 / dotsPerInchX(m_image),
m_image.height() * 72.0 / dotsPerInchY(m_image));
}
QImage ImagePage::render(qreal horizontalResolution, qreal verticalResolution, Rotation rotation, QRect boundingRect) const
{
QTransform transform;
transform.scale(horizontalResolution / dotsPerInchX(m_image),
verticalResolution / dotsPerInchY(m_image));
switch(rotation)
{
default:
case RotateBy0:
break;
case RotateBy90:
transform.rotate(90.0);
break;
case RotateBy180:
transform.rotate(180.0);
break;
case RotateBy270:
transform.rotate(270.0);
break;
}
QImage image = m_image.transformed(transform, Qt::SmoothTransformation);
if(!boundingRect.isNull())
{
image = image.copy(boundingRect);
}
return image;
}
ImageDocument::ImageDocument(const QImage& image) :
m_image(image)
{
}
int ImageDocument::numberOfPages() const
{
return 1;
}
Page* ImageDocument::page(int index) const
{
return index == 0 ? new ImagePage(m_image) : 0;
}
QStringList ImageDocument::saveFilter() const
{
QStringList formats;
foreach(const QByteArray& format, QImageWriter::supportedImageFormats())
{
const QString name = QString::fromLocal8Bit(format);
formats.append(QLatin1String("*.") + name);
}
return QStringList() << tr("Image (%1)").arg(formats.join(QLatin1String(" ")));
}
bool ImageDocument::canSave() const
{
return true;
}
bool ImageDocument::save(const QString& filePath, bool withChanges) const
{
Q_UNUSED(withChanges);
QImageWriter writer(filePath);
if(!writer.write(m_image))
{
qWarning() << writer.errorString();
return false;
}
return true;
}
Properties ImageDocument::properties() const
{
Properties properties;
properties.push_back(qMakePair(tr("Size"), QString("%1 px x %2 px").arg(m_image.width()).arg(m_image.height())));
properties.push_back(qMakePair(tr("Resolution"), QString("%1 dpi x %2 dpi").arg(dotsPerInchX(m_image), 0, 'f', 1).arg(dotsPerInchY(m_image), 0, 'f', 1)));
properties.push_back(qMakePair(tr("Depth"), QString("%1 bits").arg(m_image.depth())));
switch(m_image.format())
{
default:
break;
case QImage::Format_Mono:
case QImage::Format_MonoLSB:
properties.push_back(qMakePair(tr("Format"), tr("Monochrome")));
break;
case QImage::Format_Indexed8:
properties.push_back(qMakePair(tr("Format"), tr("Indexed")));
break;
case QImage::Format_RGB32:
properties.push_back(qMakePair(tr("Format"), tr("32 bits RGB")));
break;
case QImage::Format_ARGB32:
properties.push_back(qMakePair(tr("Format"), tr("32 bits ARGB")));
break;
case QImage::Format_RGB16:
case QImage::Format_RGB555:
case QImage::Format_RGB444:
properties.push_back(qMakePair(tr("Format"), tr("16 bits RGB")));
break;
case QImage::Format_RGB666:
case QImage::Format_RGB888:
properties.push_back(qMakePair(tr("Format"), tr("24 bits RGB")));
break;
}
foreach(const QString& key, m_image.textKeys())
{
properties.push_back(qMakePair(key, m_image.text(key)));
}
return properties;
}
} // Model
ImagePlugin::ImagePlugin(QObject* parent) : QObject(parent)
{
setObjectName("ImagePlugin");
}
Model::Document* ImagePlugin::loadDocument(const QString& filePath) const
{
QImage image(filePath);
return !image.isNull() ? new Model::ImageDocument(image) : 0;
}
} // qpdfview
#if QT_VERSION < QT_VERSION_CHECK(5,0,0)
Q_EXPORT_PLUGIN2(qpdfview_image, qpdfview::ImagePlugin)
#endif // QT_VERSION
|