Add support for receiving keyboard entries.

This patch gets the keyboard entries from the Android client and passes
along the keycode.

REVIEW: 119254

core/networkpackage.cpp

@@ -120,6 +120,16 @@ bool NetworkPackage::unserialize(const QByteArray& a, NetworkPackage* np)
     }
     np->mPayloadTransferInfo = variant["payloadTransferInfo"].toMap(); //Will return an empty qvariantmap if was not present, which is ok
 
+    //uuids contain charcaters that are not exportable in dbus paths
+    np->mId = np->mId.mid(1, np->mId.length() - 2).replace("-", "_");
+
+	if (np->mBody.contains("deviceId"))
+	{
+		QString deviceId = np->get<QString>("deviceId");
+		deviceId = deviceId.mid(1, deviceId.length() - 2).replace("-", "_");
+		np->set("deviceId", deviceId);
+	}
+
     return true;
 
 }

plugins/mousepad/mousepadplugin.cpp

@@ -22,6 +22,7 @@
 
 #include <core/networkpackage.h>
 #include <X11/extensions/XTest.h>
+#include <X11/keysym.h>
 
 K_PLUGIN_FACTORY( KdeConnectPluginFactory, registerPlugin< MousepadPlugin >(); )
 K_EXPORT_PLUGIN( KdeConnectPluginFactory("kdeconnect_mousepad", "kdeconnect-plugins") )
@@ -42,6 +43,33 @@ MousepadPlugin::~MousepadPlugin()
     }
 }
 
+XKeyEvent MousepadPlugin::createKeyEvent(Display *display, Window &win, Window &winRoot, bool press, KeyCode keycode, int modifiers)
+{
+       // http://www.doctort.org/adam/nerd-notes/x11-fake-keypress-event.html
+       XKeyEvent event;
+
+       event.display = display;
+       event.window = win;
+       event.root = winRoot;
+       event.subwindow = None;
+       event.time = CurrentTime;
+       event.x = 1;
+       event.y = 1;
+       event.x_root = 1;
+       event.y_root = 1;
+       event.same_screen = true;
+       event.keycode = keycode;
+       event.state = modifiers;
+
+       if (press) {
+           event.type = KeyPress;
+       } else {
+           event.type = KeyRelease;
+       }
+
+       return event;
+}
+
 bool MousepadPlugin::receivePackage(const NetworkPackage& np)
 {
     float dx = np.get<float>("dx", 0);
@@ -52,8 +80,10 @@ bool MousepadPlugin::receivePackage(const NetworkPackage& np)
     bool isMiddleClick = np.get<bool>("middleclick", false);
     bool isRightClick = np.get<bool>("rightclick", false);
     bool isScroll = np.get<bool>("scroll", false);
+    QString key = np.get<QString>("key", "");
+    int modifiers = np.get<int>("modifiers", 0);
 
-    if (isSingleClick || isDoubleClick || isMiddleClick || isRightClick || isScroll) {
+    if (isSingleClick || isDoubleClick || isMiddleClick || isRightClick || isScroll || !key.isEmpty() || modifiers) {
         if(!m_display) {
             m_display = XOpenDisplay(NULL);
         }
@@ -81,6 +111,48 @@ bool MousepadPlugin::receivePackage(const NetworkPackage& np)
                     XTestFakeButtonEvent(m_display, MouseWheelUp, true, CurrentTime);
                     XTestFakeButtonEvent(m_display, MouseWheelUp, false, CurrentTime);
                 }
+            } else if (!key.isEmpty() || modifiers) {
+                Window winRoot = XDefaultRootWindow(m_display);
+
+                Window winFocus;
+                int revert;
+                XGetInputFocus(m_display, &winFocus, &revert);
+
+                KeyCode keycode = 0;
+                int xModifier = 0;
+                if (!key.isEmpty()) {
+                    if (key == QLatin1String(".")) {
+                        keycode = XKeysymToKeycode(m_display, XK_period);
+                    } else if (key == QLatin1String(",")) {
+                        keycode = XKeysymToKeycode(m_display, XK_comma);
+                    } else {
+                        QByteArray keyByteArray = key.toLocal8Bit();
+                        KeySym keysym = XStringToKeysym(keyByteArray.constData());
+                        keycode = XKeysymToKeycode(m_display, keysym);
+                    }
+                } else {
+                    // It's a special key
+                    if ((modifiers & FunctionalKeys) == Backspace) {
+                        keycode = XKeysymToKeycode(m_display, XK_BackSpace);
+                    } else if ((modifiers & FunctionalKeys) == Enter) {
+                        keycode = XKeysymToKeycode(m_display, XK_Linefeed);
+                    } else if ((modifiers & FunctionalKeys) == Tab) {
+                        keycode = XKeysymToKeycode(m_display, XK_Tab);
+                    }
+                }
+
+                if (modifiers & Shift) {
+                    xModifier |= ShiftMask;
+                }
+                if (modifiers & Control) {
+                    xModifier |= ControlMask;
+                }
+
+                XKeyEvent event = createKeyEvent(m_display, winFocus, winRoot, true, keycode, xModifier);
+                XSendEvent(event.display, event.window, true, KeyPressMask, (XEvent*)&event);
+
+                event = createKeyEvent(m_display, winFocus, winRoot, false, keycode, xModifier);
+                XSendEvent(event.display, event.window, true, KeyPressMask, (XEvent*)&event);
             }
             XFlush(m_display);
         }

plugins/mousepad/mousepadplugin.h

@@ -25,6 +25,7 @@
 #include <QApplication>
 
 #include <core/kdeconnectplugin.h>
+#include <X11/Xlib.h>
 
 #define PACKAGE_TYPE_MOUSEPAD QLatin1String("kdeconnect.mousepad")
 
@@ -41,6 +42,17 @@ class MousepadPlugin
         MouseWheelDown = 5
     };
 
+    enum SpecialKeys {
+        Backspace = 1,
+        Enter = 1 << 1,
+        Tab = 1 << 1 | 1,
+        // Placeholder for other keys
+        FunctionalKeys = 1 << 2 | 1 << 1 | 1,
+
+        Shift = 1 << 3,
+        Control = 1 << 4
+    };
+
 public:
     explicit MousepadPlugin(QObject *parent, const QVariantList &args);
     virtual ~MousepadPlugin();
@@ -50,6 +62,8 @@ public Q_SLOTS:
     virtual void connected() { }
 
 private:
+    XKeyEvent createKeyEvent(Display *display, Window &win, Window &winRoot, bool press, KeyCode keycode, int modifiers);
+
     Display *m_display;
 };