hw/xwin: In multiwindow mode, do window minimization entirely in the WM

Remove winMinimizeWindow(), implement as UpdateState() in the WM instead,
which uses getHwnd() to map a Window XID to a HWND (like everything else in
the WM), rather than peering into the servers internal data structures.

Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Reviewed-by: Colin Harrison <colin.harrison@virgin.net>

hw/xwin/winmultiwindowwindow.c

@@ -799,44 +799,6 @@ winReorderWindowsMultiWindow(void)
     fRestacking = FALSE;
 }
 
-/*
- * winMinimizeWindow - Minimize in response to WM_CHANGE_STATE
- */
-
-void
-winMinimizeWindow(Window id)
-{
-    WindowPtr pWin;
-    winPrivWinPtr pWinPriv;
-
-    HWND hWnd;
-    ScreenPtr pScreen = NULL;
-    winPrivScreenPtr pScreenPriv = NULL;
-
-#if CYGWINDOWING_DEBUG
-    ErrorF("winMinimizeWindow\n");
-#endif
-
-    dixLookupResourceByType((void *) &pWin, id, RT_WINDOW, NullClient,
-                            DixUnknownAccess);
-    if (!pWin) {
-        ErrorF("%s: NULL pWin. Leaving\n", __FUNCTION__);
-        return;
-    }
-
-    pScreen = pWin->drawable.pScreen;
-    if (pScreen)
-        pScreenPriv = winGetScreenPriv(pScreen);
-
-    if (pScreenPriv)
-    {
-        pWinPriv = winGetWindowPriv(pWin);
-        hWnd = pWinPriv->hWnd;
-    }
-
-    ShowWindow(hWnd, SW_MINIMIZE);
-}
-
 /*
  * CopyWindow - See Porting Layer Definition - p. 39
  */

hw/xwin/winmultiwindowwm.c

@@ -672,6 +672,25 @@ UpdateStyle(WMInfoPtr pWMInfo, Window iWindow)
                             WS_EX_APPWINDOW) ? TRUE : FALSE);
 }
 
+/*
+ * Updates the state of a HWND
+ * (only minimization supported at the moment)
+ */
+
+static void
+UpdateState(WMInfoPtr pWMInfo, Window iWindow)
+{
+    HWND hWnd;
+
+    winDebug("UpdateState: iWindow 0x%08x\n", (int)iWindow);
+
+    hWnd = getHwnd(pWMInfo, iWindow);
+    if (!hWnd)
+        return;
+
+    ShowWindow(hWnd, SW_MINIMIZE);
+}
+
 #if 0
 /*
  * Fix up any differences between the X11 and Win32 window stacks
@@ -879,8 +898,7 @@ winMultiWindowWMProc(void *pArg)
             break;
 
         case WM_WM_CHANGE_STATE:
-            /* Minimize the window in Windows */
-            winMinimizeWindow(pNode->msg.iWindow);
+            UpdateState(pWMInfo, pNode->msg.iWindow);
             break;
 
         default:

hw/xwin/winwindow.h

@@ -144,9 +144,6 @@ winInitWM(void **ppWMInfo,
 void
  winDeinitMultiWindowWM(void);
 
-void
- winMinimizeWindow(Window id);
-
 void
  winPropertyStoreInit(void);