1 files changed, 47 insertions, 0 deletions
diff --git a/intern/ghost/intern/GHOST_WindowWin32.cpp b/intern/ghost/intern/GHOST_WindowWin32.cpp
index f74a4b17a51..897e6c145da 100644
--- a/intern/ghost/intern/GHOST_WindowWin32.cpp
+++ b/intern/ghost/intern/GHOST_WindowWin32.cpp
@@ -68,6 +68,7 @@ GHOST_WindowWin32::GHOST_WindowWin32(GHOST_SystemWin32 *system,
       m_normal_state(GHOST_kWindowStateNormal),
       m_user32(::LoadLibrary("user32.dll")),
       m_parentWindowHwnd(parentwindow ? parentwindow->m_hWnd : HWND_DESKTOP),
+      m_directManipulationHelper(NULL),
       m_debug_context(is_debug)
 {
   DWORD style = parentwindow ?
@@ -204,6 +205,42 @@ GHOST_WindowWin32::GHOST_WindowWin32(GHOST_SystemWin32 *system,
   /* Allow the showing of a progress bar on the taskbar. */
   CoCreateInstance(
       CLSID_TaskbarList, NULL, CLSCTX_INPROC_SERVER, IID_ITaskbarList3, (LPVOID *)&m_Bar);
+
+  /* Initialize Direct Manipulation. */
+  m_directManipulationHelper = GHOST_DirectManipulationHelper::create(m_hWnd, getDPIHint());
+}
+
+void GHOST_WindowWin32::updateDirectManipulation()
+{
+  if (!m_directManipulationHelper) {
+    return;
+  }
+
+  m_directManipulationHelper->update();
+}
+
+void GHOST_WindowWin32::onPointerHitTest(WPARAM wParam)
+{
+  /* Only DM_POINTERHITTEST can be the first message of input sequence of touchpad input. */
+
+  if (!m_directManipulationHelper) {
+    return;
+  }
+
+  UINT32 pointerId = GET_POINTERID_WPARAM(wParam);
+  POINTER_INPUT_TYPE pointerType;
+  if (GetPointerType(pointerId, &pointerType) && pointerType == PT_TOUCHPAD) {
+    m_directManipulationHelper->onPointerHitTest(pointerId);
+  }
+}
+
+GHOST_TTrackpadInfo GHOST_WindowWin32::getTrackpadInfo()
+{
+  if (!m_directManipulationHelper) {
+    return {0, 0, 0};
+  }
+
+  return m_directManipulationHelper->getTrackpadInfo();
 }
 
 GHOST_WindowWin32::~GHOST_WindowWin32()
@@ -253,6 +290,9 @@ GHOST_WindowWin32::~GHOST_WindowWin32()
     ::DestroyWindow(m_hWnd);
     m_hWnd = 0;
   }
+
+  delete m_directManipulationHelper;
+  m_directManipulationHelper = NULL;
 }
 
 void GHOST_WindowWin32::adjustWindowRectForClosestMonitor(LPRECT win_rect,
@@ -1035,6 +1075,13 @@ void GHOST_WindowWin32::ThemeRefresh()
   }
 }
 
+void GHOST_WindowWin32::updateDPI()
+{
+  if (m_directManipulationHelper) {
+    m_directManipulationHelper->setDPI(getDPIHint());
+  }
+}
+
 uint16_t GHOST_WindowWin32::getDPIHint()
 {
   if (m_user32) {