Add plugin arguments to VNC plugin

It is now possible to specify a port number to run the VNC server on, as
well as the screen properties:
Logical Size
Physical Size
Depth

Change-Id: I79b38c6e37ad5abb5e158eca9a17d7e8a86e692f
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

src/plugins/platforms/vnc/main.cpp

@@ -54,7 +54,6 @@ public:
 QPlatformIntegration* QVncIntegrationPlugin::create(const QString& system, const QStringList& paramList)
 {
     QT_VNC_DEBUG() << "loading vnc plugin" << system;
-    Q_UNUSED(paramList);
     if (!system.compare(QLatin1String("vnc"), Qt::CaseInsensitive))
         return new QVncIntegration(paramList);
 

src/plugins/platforms/vnc/qvnc.cpp

@@ -611,28 +611,20 @@ uint QVncClientCursor::removeClient(QVncClient *client)
 }
 #endif
 
-
-QVncServer::QVncServer(QVncScreen *screen)
-    : qvnc_screen(screen)
-{
-    QMetaObject::invokeMethod(this, "init", Qt::QueuedConnection);
-}
-
-QVncServer::QVncServer(QVncScreen *screen, int /*id*/)
+QVncServer::QVncServer(QVncScreen *screen, quint16 port)
     : qvnc_screen(screen)
+    , m_port(port)
 {
     QMetaObject::invokeMethod(this, "init", Qt::QueuedConnection);
 }
 
 void QVncServer::init()
 {
-    const int port = 5900;
-
     serverSocket = new QTcpServer(this);
-    if (!serverSocket->listen(QHostAddress::Any, port))
+    if (!serverSocket->listen(QHostAddress::Any, m_port))
         qDebug() << "QVncServer could not connect:" << serverSocket->errorString();
     else
-        QT_VNC_DEBUG("QVncServer created on port %d", port);
+        QT_VNC_DEBUG("QVncServer created on port %d", m_port);
     QT_VNC_DEBUG() << "running in thread" << thread() << QThread::currentThread();
 
     connect(serverSocket, SIGNAL(newConnection()), this, SLOT(newConnection()));

src/plugins/platforms/vnc/qvnc_p.h

@@ -391,8 +391,7 @@ class QVncServer : public QObject
 {
     Q_OBJECT
 public:
-    QVncServer(QVncScreen *screen);
-    QVncServer(QVncScreen *screen, int id);
+    QVncServer(QVncScreen *screen, quint16 port = 5900);
     ~QVncServer();
 
     enum ServerMsg { FramebufferUpdate = 0,
@@ -414,6 +413,7 @@ private:
     QTcpServer *serverSocket;
     QVector<QVncClient*> clients;
     QVncScreen *qvnc_screen;
+    quint16 m_port;
 };
 
 QT_END_NAMESPACE

src/plugins/platforms/vnc/qvncintegration.cpp

@@ -53,14 +53,24 @@
 #include <QtPlatformSupport/private/qlibinputhandler_p.h>
 #endif
 
+#include <QtCore/QRegularExpression>
+
 QT_BEGIN_NAMESPACE
 
 QVncIntegration::QVncIntegration(const QStringList &paramList)
     : m_fontDb(new QGenericUnixFontDatabase),
       m_services(new QGenericUnixServices)
 {
+    QRegularExpression portRx(QLatin1String("port=(\\d+)"));
+    quint16 port = 5900;
+    for (const QString &arg : paramList) {
+        QRegularExpressionMatch match;
+        if (arg.contains(portRx, &match))
+            port = match.captured(1).toInt();
+    }
+
     m_primaryScreen = new QVncScreen(paramList);
-    m_server = new QVncServer(m_primaryScreen);
+    m_server = new QVncServer(m_primaryScreen, port);
     m_primaryScreen->vncServer = m_server;
 }
 

src/plugins/platforms/vnc/qvncscreen.cpp

@@ -43,6 +43,7 @@
 #include <QtPlatformSupport/private/qfbcursor_p.h>
 
 #include <QtGui/QPainter>
+#include <QtCore/QRegularExpression>
 
 
 QT_BEGIN_NAMESPACE
@@ -62,11 +63,27 @@ QVncScreen::~QVncScreen()
 
 bool QVncScreen::initialize()
 {
+    QRegularExpression sizeRx(QLatin1String("size=(\\d+)x(\\d+)"));
+    QRegularExpression mmSizeRx(QLatin1String("mmsize=(?<width>(\\d*\\.)?\\d+)x(?<height>(\\d*\\.)?\\d+)"));
+    QRegularExpression depthRx(QLatin1String("depth=(\\d+)"));
+
     mGeometry = QRect(0, 0, 1024, 768);
     mFormat = QImage::Format_ARGB32_Premultiplied;
     mDepth = 32;
     mPhysicalSize = QSizeF(mGeometry.width()/96.*25.4, mGeometry.height()/96.*25.4);
 
+    for (const QString &arg : mArgs) {
+        QRegularExpressionMatch match;
+        if (arg.contains(mmSizeRx, &match)) {
+            mPhysicalSize = QSizeF(match.captured("width").toDouble(), match.captured("height").toDouble());
+        } else if (arg.contains(sizeRx, &match)) {
+            mGeometry.setSize(QSize(match.captured(1).toInt(), match.captured(2).toInt()));
+        } else if (arg.contains(depthRx, &match)) {
+            mDepth = match.captured(1).toInt();
+        }
+    }
+
+
     QFbScreen::initializeCompositor();
     QT_VNC_DEBUG() << "QVncScreen::init" << geometry();