From 947aaa79b05adec527c7500e36766c7ff19f118d Mon Sep 17 00:00:00 2001 From: Mirko Vogt Date: Mon, 18 Jul 2011 12:42:32 +0200 Subject: Add support for opening LinuxInput devices exclusively ('grabbing'). MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The LinuxInput stack exposes the ioctl EVIOCGRAB which allows LinuxInput devices being opened exclusively ('grabbed'). This patch adds support for configuring how Qt should treat LinuxInput devices (via the 'grab'-argument). By default devices are not grabbed, so not opened exclusively (matches prior behaviour). This however means all input (keystrokes, etc.) is passed to other applications (shells/ttys included) accessing respective device(s) as well. Merge-request: 2637 Reviewed-by: Jørgen Lind --- src/gui/embedded/qkbdlinuxinput_qws.cpp | 4 ++++ src/gui/embedded/qmouselinuxinput_qws.cpp | 13 +++++++++++-- 2 files changed, 15 insertions(+), 2 deletions(-) diff --git a/src/gui/embedded/qkbdlinuxinput_qws.cpp b/src/gui/embedded/qkbdlinuxinput_qws.cpp index 376b0d0..b2e7cb3 100644 --- a/src/gui/embedded/qkbdlinuxinput_qws.cpp +++ b/src/gui/embedded/qkbdlinuxinput_qws.cpp @@ -103,6 +103,7 @@ QWSLinuxInputKbPrivate::QWSLinuxInputKbPrivate(QWSLinuxInputKeyboardHandler *h, QString dev = QLatin1String("/dev/input/event1"); int repeat_delay = -1; int repeat_rate = -1; + int grab = 0; QStringList args = device.split(QLatin1Char(':')); foreach (const QString &arg, args) { @@ -110,12 +111,15 @@ QWSLinuxInputKbPrivate::QWSLinuxInputKbPrivate(QWSLinuxInputKeyboardHandler *h, repeat_delay = arg.mid(13).toInt(); else if (arg.startsWith(QLatin1String("repeat-rate="))) repeat_rate = arg.mid(12).toInt(); + else if (arg.startsWith(QLatin1String("grab="))) + grab = arg.mid(5).toInt(); else if (arg.startsWith(QLatin1String("/dev/"))) dev = arg; } m_fd = QT_OPEN(dev.toLocal8Bit().constData(), O_RDWR, 0); if (m_fd >= 0) { + ::ioctl(m_fd, EVIOCGRAB, grab); if (repeat_delay > 0 && repeat_rate > 0) { int kbdrep[2] = { repeat_delay, repeat_rate }; ::ioctl(m_fd, EVIOCSREP, kbdrep); diff --git a/src/gui/embedded/qmouselinuxinput_qws.cpp b/src/gui/embedded/qmouselinuxinput_qws.cpp index 19a9a99..5b4f664 100644 --- a/src/gui/embedded/qmouselinuxinput_qws.cpp +++ b/src/gui/embedded/qmouselinuxinput_qws.cpp @@ -43,6 +43,7 @@ #include #include +#include #include #include // overrides QT_OPEN @@ -101,11 +102,19 @@ QWSLinuxInputMousePrivate::QWSLinuxInputMousePrivate(QWSLinuxInputMouseHandler * setObjectName(QLatin1String("LinuxInputSubsystem Mouse Handler")); QString dev = QLatin1String("/dev/input/event0"); - if (device.startsWith(QLatin1String("/dev/"))) - dev = device; + int grab = 0; + + QStringList args = device.split(QLatin1Char(':')); + foreach (const QString &arg, args) { + if (arg.startsWith(QLatin1String("grab="))) + grab = arg.mid(5).toInt(); + else if (arg.startsWith(QLatin1String("/dev/"))) + dev = arg; + } m_fd = QT_OPEN(dev.toLocal8Bit().constData(), O_RDONLY | O_NDELAY, 0); if (m_fd >= 0) { + ::ioctl(m_fd, EVIOCGRAB, grab); m_notify = new QSocketNotifier(m_fd, QSocketNotifier::Read, this); connect(m_notify, SIGNAL(activated(int)), this, SLOT(readMouseData())); } else { -- cgit v0.12