1 files changed, 235 insertions, 0 deletions
diff --git a/qxt-mini/plat/qxtglobalshortcut_x11.cpp b/qxt-mini/plat/qxtglobalshortcut_x11.cpp
new file mode 100644
index 00000000..0c203dd8
--- /dev/null
+++ b/qxt-mini/plat/qxtglobalshortcut_x11.cpp
@@ -0,0 +1,235 @@
+#include "../qxtglobalshortcut_p.h"
+/****************************************************************************
+** Copyright (c) 2006 - 2011, the LibQxt project.
+** See the Qxt AUTHORS file for a list of authors and copyright holders.
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are met:
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in the
+**       documentation and/or other materials provided with the distribution.
+**     * Neither the name of the LibQxt project nor the
+**       names of its contributors may be used to endorse or promote products
+**       derived from this software without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+** DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**
+** <http://libqxt.org>  <foundation@libqxt.org>
+*****************************************************************************/
+
+#include <QVector>
+#include <QApplication>
+// include private header for great justice -sh 20131015
+#include <X11/Xlib.h>
+#include <xcb/xcb.h>
+#include "qplatformnativeinterface.h"
+
+namespace {
+
+const QVector<quint32> maskModifiers = QVector<quint32>()
+    << 0 << Mod2Mask << LockMask << (Mod2Mask | LockMask);
+
+typedef int (*X11ErrorHandler)(Display *display, XErrorEvent *event);
+
+class QxtX11ErrorHandler {
+public:
+    static bool error;
+
+    static int qxtX11ErrorHandler(Display *display, XErrorEvent *event)
+    {
+        Q_UNUSED(display);
+        switch (event->error_code)
+        {
+            case BadAccess:
+            case BadValue:
+            case BadWindow:
+                if (event->request_code == 33 /* X_GrabKey */ ||
+                        event->request_code == 34 /* X_UngrabKey */)
+                {
+                    error = true;
+                    //TODO:
+                    //char errstr[256];
+                    //XGetErrorText(dpy, err->error_code, errstr, 256);
+                }
+        }
+        return 0;
+    }
+
+    QxtX11ErrorHandler()
+    {
+        error = false;
+        m_previousErrorHandler = XSetErrorHandler(qxtX11ErrorHandler);
+    }
+
+    ~QxtX11ErrorHandler()
+    {
+        XSetErrorHandler(m_previousErrorHandler);
+    }
+
+private:
+    X11ErrorHandler m_previousErrorHandler;
+};
+
+bool QxtX11ErrorHandler::error = false;
+
+class QxtX11Data {
+public:
+    QxtX11Data()
+    {
+#if QT_VERSION < QT_VERSION_CHECK(5,0,0)
+        m_display = QX11Info::display();
+#else
+        QPlatformNativeInterface *native = qApp->platformNativeInterface();
+        void *display = native->nativeResourceForScreen(QByteArray("display"),
+                                                        QGuiApplication::primaryScreen());
+        m_display = reinterpret_cast<Display *>(display);
+#endif
+    }
+
+    bool isValid()
+    {
+        return m_display != 0;
+    }
+
+    Display *display()
+    {
+        Q_ASSERT(isValid());
+        return m_display;
+    }
+
+    Window rootWindow()
+    {
+        return DefaultRootWindow(display());
+    }
+
+    bool grabKey(quint32 keycode, quint32 modifiers, Window window)
+    {
+        QxtX11ErrorHandler errorHandler;
+
+        for (int i = 0; !errorHandler.error && i < maskModifiers.size(); ++i) {
+            XGrabKey(display(), keycode, modifiers | maskModifiers[i], window, True,
+                     GrabModeAsync, GrabModeAsync);
+        }
+
+        if (errorHandler.error) {
+            ungrabKey(keycode, modifiers, window);
+            return false;
+        }
+
+        return true;
+    }
+
+    bool ungrabKey(quint32 keycode, quint32 modifiers, Window window)
+    {
+        QxtX11ErrorHandler errorHandler;
+
+        foreach (quint32 maskMods, maskModifiers) {
+            XUngrabKey(display(), keycode, modifiers | maskMods, window);
+        }
+
+        return !errorHandler.error;
+    }
+
+private:
+    Display *m_display;
+};
+
+} // namespace
+
+#if QT_VERSION < QT_VERSION_CHECK(5,0,0)
+bool QxtGlobalShortcutPrivate::eventFilter(void *message)
+{
+    XEvent *event = static_cast<XEvent *>(message);
+    if (event->type == KeyPress)
+    {
+        XKeyEvent *key = reinterpret_cast<XKeyEvent *>(event);
+        unsigned int keycode = key->keycode;
+        unsigned int keystate = key->state;
+#else
+bool QxtGlobalShortcutPrivate::nativeEventFilter(const QByteArray & eventType,
+    void *message, long *result)
+{
+    Q_UNUSED(result);
+
+    xcb_key_press_event_t *kev = 0;
+    if (eventType == "xcb_generic_event_t") {
+        xcb_generic_event_t *ev = static_cast<xcb_generic_event_t *>(message);
+        if ((ev->response_type & 127) == XCB_KEY_PRESS)
+            kev = static_cast<xcb_key_press_event_t *>(message);
+    }
+
+    if (kev != 0) {
+        unsigned int keycode = kev->detail;
+        unsigned int keystate = 0;
+        if(kev->state & XCB_MOD_MASK_1)
+            keystate |= Mod1Mask;
+        if(kev->state & XCB_MOD_MASK_CONTROL)
+            keystate |= ControlMask;
+        if(kev->state & XCB_MOD_MASK_4)
+            keystate |= Mod4Mask;
+        if(kev->state & XCB_MOD_MASK_SHIFT)
+            keystate |= ShiftMask;
+#endif
+        activateShortcut(keycode,
+            // Mod1Mask == Alt, Mod4Mask == Meta
+            keystate & (ShiftMask | ControlMask | Mod1Mask | Mod4Mask));
+    }
+    return false;
+}
+
+quint32 QxtGlobalShortcutPrivate::nativeModifiers(Qt::KeyboardModifiers modifiers)
+{
+    // ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask, Mod3Mask, Mod4Mask, and Mod5Mask
+    quint32 native = 0;
+    if (modifiers & Qt::ShiftModifier)
+        native |= ShiftMask;
+    if (modifiers & Qt::ControlModifier)
+        native |= ControlMask;
+    if (modifiers & Qt::AltModifier)
+        native |= Mod1Mask;
+    if (modifiers & Qt::MetaModifier)
+        native |= Mod4Mask;
+
+    // TODO: resolve these?
+    //if (modifiers & Qt::MetaModifier)
+    //if (modifiers & Qt::KeypadModifier)
+    //if (modifiers & Qt::GroupSwitchModifier)
+    return native;
+}
+
+quint32 QxtGlobalShortcutPrivate::nativeKeycode(Qt::Key key)
+{
+    QxtX11Data x11;
+    if (!x11.isValid())
+        return 0;
+
+    KeySym keysym = XStringToKeysym(QKeySequence(key).toString().toLatin1().data());
+    if (keysym == NoSymbol)
+        keysym = static_cast<ushort>(key);
+
+    return XKeysymToKeycode(x11.display(), keysym);
+}
+
+bool QxtGlobalShortcutPrivate::registerShortcut(quint32 nativeKey, quint32 nativeMods)
+{
+    QxtX11Data x11;
+    return x11.isValid() && x11.grabKey(nativeKey, nativeMods, x11.rootWindow());
+}
+
+bool QxtGlobalShortcutPrivate::unregisterShortcut(quint32 nativeKey, quint32 nativeMods)
+{
+    QxtX11Data x11;
+    return x11.isValid() && x11.ungrabKey(nativeKey, nativeMods, x11.rootWindow());
+}