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
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
// Copyright (C) 2016 Denis Mingulov.
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "imageviewerfile.h"
#include "imageviewerconstants.h"
#include "imageviewertr.h"
#include <coreplugin/editormanager/documentmodel.h>
#include <coreplugin/editormanager/ieditor.h>
#include <utils/algorithm.h>
#include <utils/filepath.h>
#include <utils/mimeutils.h>
#include <utils/qtcassert.h>
#include <QGraphicsPixmapItem>
#include <QImageReader>
#include <QMovie>
#include <QPainter>
#include <QPixmap>
#ifndef QT_NO_SVG
#include <QGraphicsSvgItem>
#endif
using namespace Utils;
namespace ImageViewer::Internal {
class MovieItem : public QObject, public QGraphicsPixmapItem
{
public:
MovieItem(QMovie *movie)
: m_movie(movie)
{
setPixmap(m_movie->currentPixmap());
connect(m_movie, &QMovie::updated, this, [this](const QRectF &rect) {
update(rect);
});
}
void paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *) override
{
const bool smoothTransform = painter->worldTransform().m11() < 1;
painter->setRenderHint(QPainter::SmoothPixmapTransform, smoothTransform);
painter->drawPixmap(offset(), m_movie->currentPixmap());
}
private:
QMovie *m_movie;
};
ImageViewerFile::ImageViewerFile()
{
setId(Constants::IMAGEVIEWER_ID);
connect(this, &ImageViewerFile::mimeTypeChanged, this, &ImageViewerFile::changed);
}
ImageViewerFile::~ImageViewerFile()
{
cleanUp();
}
Core::IDocument::OpenResult ImageViewerFile::open(QString *errorString,
const Utils::FilePath &filePath,
const Utils::FilePath &realfilePath)
{
QTC_CHECK(filePath == realfilePath); // does not support auto save
OpenResult success = openImpl(errorString, filePath);
emit openFinished(success == OpenResult::Success);
return success;
}
Core::IDocument::OpenResult ImageViewerFile::openImpl(QString *errorString,
const Utils::FilePath &filePath)
{
cleanUp();
if (!filePath.isReadableFile())
return OpenResult::ReadError;
const QString &fileName = filePath.toUrlishString();
QByteArray format = QImageReader::imageFormat(fileName);
// if it is impossible to recognize a file format - file will not be open correctly
if (format.isEmpty()) {
if (errorString)
*errorString = Tr::tr("Image format not supported.");
return OpenResult::CannotHandle;
}
#ifndef QT_NO_SVG
if (format.startsWith("svg")) {
m_tempSvgItem = new QGraphicsSvgItem(fileName);
QRectF bound = m_tempSvgItem->boundingRect();
if (!bound.isValid() || (qFuzzyIsNull(bound.width()) && qFuzzyIsNull(bound.height()))) {
delete m_tempSvgItem;
m_tempSvgItem = nullptr;
if (errorString)
*errorString = Tr::tr("Failed to read SVG image.");
return OpenResult::CannotHandle;
}
m_type = TypeSvg;
emit imageSizeChanged(m_tempSvgItem->boundingRect().size().toSize());
} else
#endif
if (QMovie::supportedFormats().contains(format)) {
m_movie = new QMovie(fileName, QByteArray(), this);
// force reading movie/image data, so we can catch completely invalid movies/images early:
m_movie->jumpToNextFrame();
if (!m_movie->isValid()) {
if (errorString)
*errorString = Tr::tr("Failed to read image.");
delete m_movie;
m_movie = nullptr;
return OpenResult::CannotHandle;
}
m_type = TypeMovie;
connect(m_movie, &QMovie::resized, this, &ImageViewerFile::imageSizeChanged);
connect(m_movie, &QMovie::stateChanged, this, &ImageViewerFile::movieStateChanged);
} else {
m_pixmap = new QPixmap(fileName);
if (m_pixmap->isNull()) {
if (errorString)
*errorString = Tr::tr("Failed to read image.");
delete m_pixmap;
m_pixmap = nullptr;
return OpenResult::CannotHandle;
}
m_type = TypePixmap;
emit imageSizeChanged(m_pixmap->size());
}
setFilePath(filePath);
setMimeType(Utils::mimeTypeForFile(filePath).name());
return OpenResult::Success;
}
Core::IDocument::ReloadBehavior ImageViewerFile::reloadBehavior(ChangeTrigger state, ChangeType type) const
{
if (type == TypeRemoved)
return BehaviorSilent;
if (type == TypeContents && state == TriggerInternal && !isModified())
return BehaviorSilent;
return BehaviorAsk;
}
Result ImageViewerFile::reload(Core::IDocument::ReloadFlag flag,
Core::IDocument::ChangeType type)
{
Q_UNUSED(type)
if (flag == FlagIgnore)
return Result::Ok;
emit aboutToReload();
QString errorString;
bool success = (openImpl(&errorString, filePath()) == OpenResult::Success);
emit reloadFinished(success);
return Result(success, errorString);
}
QMovie *ImageViewerFile::movie() const
{
return m_movie;
}
QGraphicsItem *ImageViewerFile::createGraphicsItem() const
{
QGraphicsItem *val = nullptr;
switch (m_type) {
case TypeInvalid:
break;
case TypeSvg:
#ifndef QT_NO_SVG
if (m_tempSvgItem) {
val = m_tempSvgItem;
m_tempSvgItem = nullptr;
} else {
val = new QGraphicsSvgItem(filePath().toUrlishString());
}
#endif
break;
case TypeMovie:
val = new MovieItem(m_movie);
break;
case TypePixmap: {
auto pixmapItem = new QGraphicsPixmapItem(*m_pixmap);
pixmapItem->setTransformationMode(Qt::SmoothTransformation);
val = pixmapItem;
break;
}
default:
break;
}
return val;
}
ImageViewerFile::ImageType ImageViewerFile::type() const
{
return m_type;
}
void ImageViewerFile::updateVisibility()
{
if (!m_movie || m_movie->state() != QMovie::Running)
return;
const bool anyVisible = Utils::anyOf(Core::DocumentModel::editorsForDocument(this),
[] (Core::IEditor *editor)
{ return editor->widget()->isVisible(); });
if (!anyVisible)
m_movie->setPaused(true);
}
void ImageViewerFile::cleanUp()
{
delete m_pixmap;
m_pixmap = nullptr;
delete m_movie;
m_movie = nullptr;
#ifndef QT_NO_SVG
delete m_tempSvgItem;
m_tempSvgItem = nullptr;
#endif
m_type = TypeInvalid;
}
} // ImageViewer::Internal
|
