1 files changed, 121 insertions, 0 deletions

diff --git a/src/gui/kernel/qapplication_win.cpp b/src/gui/kernel/qapplication_win.cpp
index a690ffd..bb7d931 100644
--- a/src/gui/kernel/qapplication_win.cpp
+++ b/src/gui/kernel/qapplication_win.cpp
@@ -88,6 +88,7 @@ extern void qt_wince_hide_taskbar(HWND hwnd); //defined in qguifunctions_wince.c
 #include "qdebug.h"
 #include <private/qkeymapper_p.h>
 #include <private/qlocale_p.h>
+#include "qevent_p.h"
 
 //#define ALIEN_DEBUG
 
@@ -112,6 +113,37 @@ extern void qt_wince_hide_taskbar(HWND hwnd); //defined in qguifunctions_wince.c
 #  include <winable.h>
 #endif
 
+#ifndef WM_TOUCH
+#  define WM_TOUCH 0x0240
+
+#  define TOUCHEVENTF_MOVE       0x0001
+#  define TOUCHEVENTF_DOWN       0x0002
+#  define TOUCHEVENTF_UP         0x0004
+#  define TOUCHEVENTF_INRANGE    0x0008
+#  define TOUCHEVENTF_PRIMARY    0x0010
+#  define TOUCHEVENTF_NOCOALESCE 0x0020
+#  define TOUCHEVENTF_PEN        0x0040
+#  define TOUCHEVENTF_PALM       0x0080
+
+#  define TOUCHINPUTMASKF_TIMEFROMSYSTEM 0x0001
+#  define TOUCHINPUTMASKF_EXTRAINFO      0x0002
+#  define TOUCHINPUTMASKF_CONTACTAREA    0x0004
+
+typedef struct tagTOUCHINPUT
+{
+    LONG x;
+    LONG y;
+    HANDLE hSource;
+    DWORD dwID;
+    DWORD dwFlags;
+    DWORD dwMask;
+    DWORD dwTime;
+    ULONG_PTR dwExtraInfo;
+    DWORD cxContact;
+    DWORD cyContact;
+} TOUCHINPUT, *PTOUCHINPUT;
+
+#endif
 
 #ifndef FLASHW_STOP
 typedef struct {
@@ -1717,6 +1749,9 @@ LRESULT CALLBACK QtWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam
         result = widget->translateWheelEvent(msg);
     } else {
         switch (message) {
+        case WM_TOUCH:
+            result = getQApplicationPrivateInternal()->translateTouchEvent(msg);
+            break;
         case WM_KEYDOWN:                        // keyboard event
         case WM_SYSKEYDOWN:
             qt_keymapper_private()->updateKeyMap(msg);
@@ -3974,4 +4009,90 @@ void QSessionManager::cancel()
 
 #endif //QT_NO_SESSIONMANAGER
 
+qt_RegisterTouchWindowPtr QApplicationPrivate::RegisterTouchWindow = 0;
+qt_GetTouchInputInfoPtr QApplicationPrivate::GetTouchInputInfo = 0;
+qt_CloseTouchInputHandlePtr QApplicationPrivate::CloseTouchInputHandle = 0;
+
+void QApplicationPrivate::initializeMultitouch_sys()
+{
+    QLibrary library(QLatin1String("user32"));
+    RegisterTouchWindow = static_cast<qt_RegisterTouchWindowPtr>(library.resolve("RegisterTouchWindow"));
+    GetTouchInputInfo = static_cast<qt_GetTouchInputInfoPtr>(library.resolve("GetTouchInputInfo"));
+    CloseTouchInputHandle = static_cast<qt_CloseTouchInputHandlePtr>(library.resolve("CloseTouchInputHandle"));
+
+    touchInputIDToTouchPointID.clear();
+}
+
+void QApplicationPrivate::cleanupMultitouch_sys()
+{
+    touchInputIDToTouchPointID.clear();
+}
+
+bool QApplicationPrivate::translateTouchEvent(const MSG &msg)
+{
+    Q_Q(QApplication);
+
+    QWidget *widgetForHwnd = QWidget::find(msg.hwnd);
+    if (!widgetForHwnd)
+        return false;
+
+    QRect screenGeometry = q->desktop()->screenGeometry(widgetForHwnd);
+
+    QList<QTouchEvent::TouchPoint> touchPoints;
+
+    QVector<TOUCHINPUT> winTouchInputs(msg.wParam);
+    memset(winTouchInputs.data(), 0, sizeof(TOUCHINPUT) * winTouchInputs.count());
+    Qt::TouchPointStates allStates = 0;
+    QApplicationPrivate::GetTouchInputInfo((HANDLE) msg.lParam, msg.wParam, winTouchInputs.data(), sizeof(TOUCHINPUT));
+    for (int i = 0; i < winTouchInputs.count(); ++i) {
+        const TOUCHINPUT &touchInput = winTouchInputs.at(i);
+
+        int touchPointID = touchInputIDToTouchPointID.value(touchInput.dwID, -1);
+        if (touchPointID == -1) {
+            touchPointID = touchInputIDToTouchPointID.count();
+            touchInputIDToTouchPointID.insert(touchInput.dwID, touchPointID);
+        }
+
+        QTouchEvent::TouchPoint touchPoint(touchPointID);
+
+        // update state
+        QPointF screenPos(qreal(touchInput.x) / qreal(100.), qreal(touchInput.y) / qreal(100.));
+        QRectF screenRect;
+        if (touchInput.dwMask & TOUCHINPUTMASKF_CONTACTAREA)
+            screenRect.setSize(QSizeF(qreal(touchInput.cxContact) / qreal(100.),
+                                      qreal(touchInput.cyContact) / qreal(100.)));
+        screenRect.moveCenter(screenPos);
+
+        Qt::TouchPointStates state;
+        if (touchInput.dwFlags & TOUCHEVENTF_DOWN) {
+            state = Qt::TouchPointPressed;
+        } else if (touchInput.dwFlags & TOUCHEVENTF_UP) {
+            state = Qt::TouchPointReleased;
+        } else {
+            state = (screenPos == touchPoint.screenPos()
+                     ? Qt::TouchPointStationary
+                     : Qt::TouchPointMoved);
+        }
+        if (touchInput.dwFlags & TOUCHEVENTF_PRIMARY)
+            state |= Qt::TouchPointPrimary;
+        touchPoint.setState(state);
+        touchPoint.setScreenRect(screenRect);
+        touchPoint.setNormalizedPos(QPointF(screenPos.x() / screenGeometry.width(),
+                                            screenPos.y() / screenGeometry.height()));
+
+        allStates |= state;
+
+        touchPoints.append(touchPoint);
+    }
+    QApplicationPrivate::CloseTouchInputHandle((HANDLE) msg.lParam);
+
+    if ((allStates & Qt::TouchPointStateMask) == Qt::TouchPointReleased) {
+        // all touch points released, forget the ids we've seen, they may not be reused
+        touchInputIDToTouchPointID.clear();
+    }
+
+    translateRawTouchEvent(widgetForHwnd, QTouchEvent::TouchScreen, touchPoints);
+    return true;
+}
+
 QT_END_NAMESPACE