moving fgPlatformReshapeWindow and fgPlatformDisplayWindow from fg_main_x to fg_windo...

[freeglut] / src / mswin / fg_main_mswin.c

diff --git a/src/mswin/fg_main_mswin.c b/src/mswin/fg_main_mswin.c
index 4588ef6..8be93e8 100644 (file)
--- a/src/mswin/fg_main_mswin.c
+++ b/src/mswin/fg_main_mswin.c
@@ -58,98 +58,39 @@ GXOPENINPUT GXOpenInput_ = NULL;
 struct GXKeyList gxKeyList;
 #endif /* _WIN32_WCE */
 
-/* 
- * Helper functions for getting client area from the window rect
- * and the window rect from the client area given the style of the window
- * (or a valid window pointer from which the style can be queried).
- */
-extern void fghComputeWindowRectFromClientArea_QueryWindow( RECT *clientRect, const SFG_Window *window, BOOL posIsOutside );
-extern void fghGetClientArea                              ( RECT *clientRect, const SFG_Window *window, BOOL wantPosOutside );
-
-
-void fgPlatformReshapeWindow ( SFG_Window *window, int width, int height )
-{
-    RECT windowRect;
-
-    /*
-     * For windowed mode, get the current position of the
-     * window and resize taking the size of the frame
-     * decorations into account.
-     *
-     * Note on maximizing behavior of Windows: the resize borders are off
-     * the screen such that the client area extends all the way from the
-     * leftmost corner to the rightmost corner to maximize screen real
-     * estate. A caption is still shown however to allow interaction with
-     * the window controls. This is default behavior of Windows that
-     * FreeGLUT sticks with. To alter, one would have to check if
-     * WS_MAXIMIZE style is set when a resize event is triggered, and
-     * then manually correct the windowRect to put the borders back on
-     * screen.
-     */
-
-    /* "GetWindowRect" returns the pixel coordinates of the outside of the window */
-    GetWindowRect( window->Window.Handle, &windowRect );
-
-    /* Create rect in FreeGLUT format, (X,Y) topleft outside window, WxH of client area */
-    windowRect.right    = windowRect.left+width;
-    windowRect.bottom   = windowRect.top+height;
-
-    if (window->Parent == NULL)
-        /* get the window rect from this to feed to SetWindowPos, correct for window decorations */
-        fghComputeWindowRectFromClientArea_QueryWindow(&windowRect,window,TRUE);
-    else
-    {
-        /* correct rect for position client area of parent window
-         * (SetWindowPos input for child windows is in coordinates
-         * relative to the parent's client area).
-         * Child windows don't have decoration, so no need to correct
-         * for them.
-         */
-        RECT parentRect;
-        fghGetClientArea( &parentRect, window->Parent, FALSE );
-        OffsetRect(&windowRect,-parentRect.left,-parentRect.top);
-    }
-    
-    /* Do the actual resizing */
-    SetWindowPos( window->Window.Handle,
-                  HWND_TOP,
-                  windowRect.left, windowRect.top,
-                  windowRect.right - windowRect.left,
-                  windowRect.bottom- windowRect.top,
-                  SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOSENDCHANGING |
-                  SWP_NOZORDER
-    );
-
-    /* Set new width and height so we can test for that in WM_SIZE message handler and don't do anything if not needed */
-    window->State.Width  = width;
-    window->State.Height = height;
-}
 
-
-void fgPlatformDisplayWindow ( SFG_Window *window )
+/* Get system time, taking special precautions against 32bit timer wrap.
+   We use timeGetTime and not GetTickCount because of its better stability,
+   and because we can increase its granularity (to 1 ms in
+   fgPlatformInitialize). For that reason we can't use GetTickCount64 which
+   wouldn't have the wrap issue.
+   Credit: this is based on code in glibc (https://mail.gnome.org/archives/commits-list/2011-November/msg04588.html)
+   */
+static fg_time_t lastTime32 = 0;
+static fg_time_t timeEpoch = 0;
+void fgPlatformInitSystemTime()
 {
-    RedrawWindow(
-        window->Window.Handle, NULL, NULL,
-        RDW_NOERASE | RDW_INTERNALPAINT | RDW_INVALIDATE | RDW_UPDATENOW
-    );
+#if defined(_WIN32_WCE)
+    lastTime32 = GetTickCount();
+#else
+    lastTime32 = timeGetTime();
+#endif
 }
-
-
 fg_time_t fgPlatformSystemTime ( void )
 {
+    fg_time_t currTime32;
 #if defined(_WIN32_WCE)
-    return GetTickCount();
+    currTime32 = GetTickCount();
 #else
-    /* TODO: do this with QueryPerformanceCounter as timeGetTime has
-     * insufficient resolution (only about 5 ms on system under low load).
-     * See:
-     * http://msdn.microsoft.com/en-us/library/windows/desktop/dd757629(v=vs.85).aspx
-     * Or maybe QueryPerformanceCounter is not a good idea either, see
-     * http://old.nabble.com/Re%3A-glutTimerFunc-does-not-detect-if-system-time-moved-backward-p33479674.html
-     * for some other ideas (at bottom)...
-     */
-    return timeGetTime();
+    currTime32 = timeGetTime();
 #endif
+    /* Check if we just wrapped */
+    if (currTime32 < lastTime32)
+        timeEpoch++;
+    
+    lastTime32 = currTime32;
+
+    return currTime32 | timeEpoch << 32;
 }