Changeset 47729 in vbox for trunk

Timestamp:

Aug 14, 2013 2:13:41 PM (12 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

87971

Message:

FE/Qt: Mouse handler: filter fake mouse events (Windows host).

File:

• trunk/src/VBox/Frontends/VirtualBox/src/runtime/UIMouseHandler.cpp (modified) (2 diffs)

trunk/src/VBox/Frontends/VirtualBox/src/runtime/UIMouseHandler.cpp

@@ -678 +678 @@
 }
 
+/* Try to detect if the mouse event is fake and actually generated by a touch device. */
+#ifdef Q_WS_WIN
+#if (WINVER < 0x0601)
+typedef enum tagINPUT_MESSAGE_DEVICE_TYPE { 
+  IMDT_UNAVAILABLE  = 0, // 0x0
+  IMDT_KEYBOARD     = 1, // 0x1
+  IMDT_MOUSE        = 2, // 0x2
+  IMDT_TOUCH        = 4, // 0x4
+  IMDT_PEN          = 8 // 0x8
+} INPUT_MESSAGE_DEVICE_TYPE;
+
+typedef enum tagINPUT_MESSAGE_ORIGIN_ID { 
+  IMO_UNAVAILABLE  = 0x00000000,
+  IMO_HARDWARE     = 0x00000001,
+  IMO_INJECTED     = 0x00000002,
+  IMO_SYSTEM       = 0x00000004
+} INPUT_MESSAGE_ORIGIN_ID;
+
+typedef struct tagINPUT_MESSAGE_SOURCE {
+  INPUT_MESSAGE_DEVICE_TYPE deviceType;
+  INPUT_MESSAGE_ORIGIN_ID   originId;
+} INPUT_MESSAGE_SOURCE;
+#endif /* WINVER < 0x0601 */
+
+#define MOUSEEVENTF_FROMTOUCH 0xFF515700
+#define MOUSEEVENTF_MASK      0xFFFFFF00
+
+typedef BOOL WINAPI FNGetCurrentInputMessageSource(INPUT_MESSAGE_SOURCE *inputMessageSource);
+typedef FNGetCurrentInputMessageSource *PFNGetCurrentInputMessageSource;
+
+static bool mouseIsTouchSource(int iEventType, Qt::MouseButtons mouseButtons)
+{
+    NOREF(mouseButtons);
+
+    static PFNGetCurrentInputMessageSource pfnGetCurrentInputMessageSource = (PFNGetCurrentInputMessageSource)-1;
+    if (pfnGetCurrentInputMessageSource == (PFNGetCurrentInputMessageSource)-1)
+    {
+        HMODULE hUser = GetModuleHandle(L"user32.dll");
+        if (hUser)
+            pfnGetCurrentInputMessageSource =
+                (PFNGetCurrentInputMessageSource)GetProcAddress(hUser, "GetCurrentInputMessageSource");
+    }
+
+    int deviceType = -1;
+    if (pfnGetCurrentInputMessageSource)
+    {
+        INPUT_MESSAGE_SOURCE inputMessageSource;
+        BOOL fSuccess = pfnGetCurrentInputMessageSource(&inputMessageSource);
+        deviceType = fSuccess? inputMessageSource.deviceType: -2;
+    }
+    else
+    {
+        if (   iEventType == QEvent::MouseButtonPress
+            || iEventType == QEvent::MouseButtonRelease
+            || iEventType == QEvent::MouseMove)
+            deviceType = (GetMessageExtraInfo() & MOUSEEVENTF_MASK) == MOUSEEVENTF_FROMTOUCH? IMDT_TOUCH: -3;
+    }
+
+    LogRelFlow(("mouseIsTouchSource: deviceType %d\n", deviceType));
+    return deviceType == IMDT_TOUCH || deviceType == IMDT_PEN;
+}
+#else
+/* Apparently Q_WS_MAC does not generate fake mouse events.
+ * Other platforms, which have no known method to detect fake events are handled here too.
+ */
+static bool mouseIsTouchSource(int iEventType, Qt::MouseButtons mouseButtons)
+{
+    NOREF(iEventType);
+    NOREF(mouseButtons);
+    return false;
+}
+#endif
+
 /* Separate function to handle most of existing mouse-events: */
 bool UIMouseHandler::mouseEvent(int iEventType, ulong uScreenId,
@@ -684 +757 @@
                                 int wheelDelta, Qt::Orientation wheelDirection)
 {
+    /* Ignore fake mouse events. */
+    if (uisession()->isMouseSupportsMultiTouch() && mouseIsTouchSource(iEventType, mouseButtons))
+        return true;
+
     /* Check if machine is still running: */
     if (!uisession()->isRunning())