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
|
/****************************************************************************
**
** Copyright (C) 2016 Pelagicore AG
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QmlLive tool.
**
** $QT_BEGIN_LICENSE:GPL-QTAS$
** Commercial License Usage
** Licensees holding valid commercial Qt Automotive Suite licenses may use
** this file in accordance with the commercial license agreement provided
** with the Software or, alternatively, in accordance with the terms
** contained in a written agreement between you and The Qt Company. For
** licensing terms and conditions see https://www.qt.io/terms-conditions.
** For further information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
** SPDX-License-Identifier: GPL-3.0
**
****************************************************************************/
#include "qmlpreviewadapter.h"
#include <QFileInfo>
#include <QDir>
#include <QCoreApplication>
#include <QLocalSocket>
#include <QDebug>
#include <QProcess>
Q_GLOBAL_STATIC(QProcess, proc)
Q_GLOBAL_STATIC(QString, serverName)
QmlPreviewAdapter::QmlPreviewAdapter(QObject *parent) :
QObject(parent)
{
}
bool QmlPreviewAdapter::canPreview(const QString &path) const
{
return path.endsWith(".qml");
}
QImage QmlPreviewAdapter::preview(const QString &path, const QSize &requestedSize)
{
QImage img;
if (!requestedSize.isValid()) {
qWarning() << "preview for" << path << "with invalid size" << requestedSize << "requested";
return QImage();
}
static const QString program = QCoreApplication::applicationDirPath() +
#ifdef Q_OS_WIN
QStringLiteral("/previewGenerator.exe");
#else
QStringLiteral("/../libexec/qmllive/previewGenerator");
#endif
static const QStringList arguments("QmlLiveBench");
if (proc()->state() != QProcess::Running) {
QProcessEnvironment env = QProcessEnvironment::systemEnvironment();
{
QMutexLocker m(&m_mutex);
env.insert(QStringLiteral("QT_PLUGIN_PATH"), m_pluginPaths.join(QChar(':')));
env.insert(QStringLiteral("QML_IMPORT_PATH"), m_importPaths.join(QChar(':')));
env.insert(QStringLiteral("QML2_IMPORT_PATH"), m_importPaths.join(QChar(':')));
}
proc()->setProcessEnvironment(env);
proc()->setProcessChannelMode(QProcess::ForwardedErrorChannel);
proc()->start(program, arguments);
if (!proc()->waitForStarted()) {
qWarning() << "Failed to start" << program;
return QImage();
}
proc()->waitForReadyRead();
QByteArray data = proc()->readAll();
if (!data.startsWith("ready#")) {
qWarning() << "previewGenerator did not send the \"ready\" token";
return QImage();
}
QString server = QString::fromUtf8(QByteArray::fromHex(data.mid(6)));
*serverName() = server;
}
QLocalSocket socket;
socket.connectToServer(*serverName());
if (!socket.waitForConnected(3000)) {
qWarning() << "Could not connect to PreviewGenerator";
return QImage();
}
//qWarning() << "QL: sending request [" << requestedSize << "]" << path;
{
QDataStream ds(&socket);
ds << requestedSize << path;
}
socket.waitForBytesWritten();
//qWarning() << "QL: sent";
QByteArray data;
bool allData = false;
while (!allData) {
int bytes = socket.bytesAvailable();
//qWarning() << "QL: can read" << bytes << "bytes";
if (proc()->state() != QProcess::Running) {
qWarning() << "previewGenerator stopped unexpectedly";
break;
}
if (!bytes) {
//qWarning() << "QL: waiting for more data (have" << data.size() << "already)";
socket.waitForReadyRead(5000);
continue;
}
data += socket.read(bytes);
if (data.endsWith("\nEND")) {
allData = true;
data.chop(4);
//qWarning() << "QL: received end marker after" << data.size() << "bytes";
}
}
socket.close();
img.loadFromData(data, "PNG");
if (img.size().isNull()) {
qWarning() << "Failed to generate Preview";
img = QImage("://livert/no.png");
}
return img;
}
bool QmlPreviewAdapter::canAdapt(const QUrl &url) const
{
Q_UNUSED(url);
return false;
}
QUrl QmlPreviewAdapter::adapt(const QUrl &url, QQmlContext *context)
{
Q_UNUSED(url);
Q_UNUSED(context);
return QUrl();
}
void QmlPreviewAdapter::setImportPaths(QStringList importPaths)
{
QMutexLocker m(&m_mutex);
m_importPaths = importPaths;
}
void QmlPreviewAdapter::setPluginPaths(QStringList pluginPaths)
{
QMutexLocker m(&m_mutex);
m_importPaths = pluginPaths;
}
|
