Implement Mouse Enter/Leave Events

lib/win/ApplicationWin32.cpp

@@ -234,7 +234,8 @@ public:
             case WM_DEVICECHANGE:
                 return DeviceFinder::winDevChangedHandler(wParam, lParam);
                 
-            case WM_SIZE:
+            case WM_SIZING:
+            case WM_MOVING:
             case WM_SYSKEYDOWN:
             case WM_KEYDOWN:
             case WM_SYSKEYUP:
@@ -248,6 +249,10 @@ public:
             case WM_XBUTTONDOWN:
             case WM_XBUTTONUP:
             case WM_MOUSEMOVE:
+            case WM_MOUSELEAVE:
+            case WM_NCMOUSELEAVE:
+            case WM_MOUSEHOVER:
+            case WM_NCMOUSEHOVER:
                 window->_incomingEvent(&HWNDEvent(uMsg, wParam, lParam));
 
             default:

lib/win/WindowWin32.cpp

@@ -426,8 +426,8 @@ public:
     WindowWin32(const SystemString& title, Boo3DAppContext& b3dCtx)
     {
         m_hwnd = CreateWindowW(L"BooWindow", title.c_str(), WS_OVERLAPPEDWINDOW,
-                               CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
+            CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
-                               NULL, NULL, NULL, NULL);
+            NULL, NULL, NULL, NULL);
         IGraphicsContext::EGraphicsAPI api = IGraphicsContext::API_D3D11;
 #if _WIN32_WINNT_WIN10
         if (b3dCtx.m_ctx12.m_dev)
@@ -463,9 +463,9 @@ public:
 
     SystemString getTitle()
     {
-         wchar_t title[256];
+        wchar_t title[256];
-         int c = GetWindowTextW(m_hwnd, title, 256);
+        int c = GetWindowTextW(m_hwnd, title, 256);
-         return SystemString(title, c);
+        return SystemString(title, c);
     }
 
     void setTitle(const SystemString& title)
@@ -486,8 +486,12 @@ public:
     {
         RECT rct;
         GetClientRect(m_hwnd, &rct);
-        xOut = rct.left;
+        POINT pt;
-        yOut = rct.top;
+        pt.x = rct.left;
+        pt.y = rct.top;
+        MapWindowPoints(m_hwnd, HWND_DESKTOP, &pt, 1);
+        xOut = pt.x;
+        yOut = pt.y;
         wOut = rct.right;
         hOut = rct.bottom;
     }
@@ -496,8 +500,12 @@ public:
     {
         RECT rct;
         GetClientRect(m_hwnd, &rct);
-        xOut = rct.left;
+        POINT pt;
-        yOut = rct.top;
+        pt.x = rct.left;
+        pt.y = rct.top;
+        MapWindowPoints(m_hwnd, HWND_DESKTOP, &pt, 1);
+        xOut = pt.x;
+        yOut = pt.y;
         wOut = rct.right;
         hOut = rct.bottom;
     }
@@ -571,12 +579,25 @@ public:
         }
     }
 
+    void _trackMouse()
+    {
+        TRACKMOUSEEVENT tme;
+        tme.cbSize = sizeof(TRACKMOUSEEVENT);
+        tme.dwFlags = TME_NONCLIENT | TME_HOVER | TME_LEAVE;
+        tme.dwHoverTime = 500;
+        tme.hwndTrack = m_hwnd;
+    }
+
+    bool mouseTracking = false;
+    bool moving = false;
+    bool resizing = false;
+
     void _incomingEvent(void* ev)
     {
         HWNDEvent& e = *static_cast<HWNDEvent*>(ev);
         switch (e.uMsg)
         {
-        case WM_SIZE:
+        case WM_SIZING:
         {
             SWindowRect rect;
             getWindowFrame(rect.location[0], rect.location[1], rect.size[0], rect.size[1]);
@@ -587,6 +608,17 @@ public:
                 m_callback->resized(rect);
             return;
         }
+        case WM_MOVING:
+        {
+            SWindowRect rect;
+            getWindowFrame(rect.location[0], rect.location[1], rect.size[0], rect.size[1]);
+            if (!rect.size[0] || !rect.size[1])
+                return;
+
+            if (m_callback)
+                m_callback->windowMoved(rect);
+            return;
+        }
         case WM_KEYDOWN:
         case WM_SYSKEYDOWN:
         {
@@ -681,7 +713,50 @@ public:
                     {(unsigned)GET_X_LPARAM(e.lParam), (unsigned)GET_Y_LPARAM(e.lParam)},
                     {float(GET_X_LPARAM(e.lParam)) / float(w), float(GET_Y_LPARAM(e.lParam)) / float(h)}
                 };
-                m_callback->mouseMove(coord);
+                if (!mouseTracking)
+                {
+                    _trackMouse();
+                    mouseTracking = true;
+                    m_callback->mouseEnter(coord);
+                }
+                else
+                    m_callback->mouseMove(coord);
+            }
+
+            return;
+        }
+        case WM_MOUSELEAVE:
+        case WM_NCMOUSELEAVE:
+        {
+            if (m_callback)
+            {
+                int x, y, w, h;
+                getWindowFrame(x, y, w, h);
+                SWindowCoord coord =
+                {
+                    { (unsigned)GET_X_LPARAM(e.lParam), (unsigned)GET_Y_LPARAM(e.lParam) },
+                    { (unsigned)GET_X_LPARAM(e.lParam), (unsigned)GET_Y_LPARAM(e.lParam) },
+                    { float(GET_X_LPARAM(e.lParam)) / float(w), float(GET_Y_LPARAM(e.lParam)) / float(h) }
+                };
+                m_callback->mouseLeave(coord);
+                mouseTracking = false;
+            }
+            return;
+        }
+        case WM_NCMOUSEHOVER:
+        case WM_MOUSEHOVER:
+        {
+            if (m_callback)
+            {
+                int x, y, w, h;
+                getWindowFrame(x, y, w, h);
+                SWindowCoord coord =
+                {
+                    { (unsigned)GET_X_LPARAM(e.lParam), (unsigned)GET_Y_LPARAM(e.lParam) },
+                    { (unsigned)GET_X_LPARAM(e.lParam), (unsigned)GET_Y_LPARAM(e.lParam) },
+                    { float(GET_X_LPARAM(e.lParam)) / float(w), float(GET_Y_LPARAM(e.lParam)) / float(h) }
+                };
+                m_callback->mouseEnter(coord);
             }
             return;
         }