winex11: Use inline intersect_rect helper instead of IntersectRect.

dlls/winex11.drv/bitblt.c

@@ -1912,7 +1912,7 @@ static void x11drv_surface_flush( struct window_surface *window_surface )
     coords.width  = surface->header.rect.right - surface->header.rect.left;
     coords.height = surface->header.rect.bottom - surface->header.rect.top;
     SetRect( &coords.visrect, 0, 0, coords.width, coords.height );
-    if (IntersectRect( &coords.visrect, &coords.visrect, &surface->bounds ))
+    if (intersect_rect( &coords.visrect, &coords.visrect, &surface->bounds ))
     {
         TRACE( "flushing %p %dx%d bounds %s bits %p\n",
                surface, coords.width, coords.height,

dlls/winex11.drv/display.c

@@ -124,7 +124,7 @@ RECT get_work_area(const RECT *monitor_rect)
                 work_rect.right = work_rect.left + work_area[i * 4 + 2];
                 work_rect.bottom = work_rect.top + work_area[i * 4 + 3];
 
-                if (IntersectRect(&work_rect, &work_rect, monitor_rect))
+                if (intersect_rect( &work_rect, &work_rect, monitor_rect ))
                 {
                     TRACE("work_rect:%s.\n", wine_dbgstr_rect(&work_rect));
                     XFree(work_area);
@@ -146,7 +146,7 @@ RECT get_work_area(const RECT *monitor_rect)
             SetRect(&work_rect, work_area[0], work_area[1], work_area[0] + work_area[2],
                     work_area[1] + work_area[3]);
 
-            if (IntersectRect(&work_rect, &work_rect, monitor_rect))
+            if (intersect_rect( &work_rect, &work_rect, monitor_rect ))
             {
                 TRACE("work_rect:%s.\n", wine_dbgstr_rect(&work_rect));
                 XFree(work_area);

dlls/winex11.drv/init.c

@@ -147,7 +147,7 @@ void add_device_bounds( X11DRV_PDEVICE *dev, const RECT *rect )
     if (!dev->bounds) return;
     if (dev->region && NtGdiGetRgnBox( dev->region, &rc ))
     {
-        if (IntersectRect( &rc, &rc, rect )) add_bounds_rect( dev->bounds, &rc );
+        if (intersect_rect( &rc, &rc, rect )) add_bounds_rect( dev->bounds, &rc );
     }
     else add_bounds_rect( dev->bounds, rect );
 }

dlls/winex11.drv/settings.c

@@ -709,7 +709,7 @@ static BOOL overlap_placed_displays(const RECT *rect, const struct x11drv_displa
     for (display_idx = 0; display_idx < display_count; ++display_idx)
     {
         if (displays[display_idx].placed &&
-            IntersectRect(&intersect, &displays[display_idx].new_rect, rect))
+            intersect_rect(&intersect, &displays[display_idx].new_rect, rect))
             return TRUE;
     }
     return FALSE;

dlls/winex11.drv/window.c

@@ -2309,7 +2309,7 @@ static inline BOOL get_surface_rect( const RECT *visible_rect, RECT *surface_rec
 {
     *surface_rect = NtUserGetVirtualScreenRect();
 
-    if (!IntersectRect( surface_rect, surface_rect, visible_rect )) return FALSE;
+    if (!intersect_rect( surface_rect, surface_rect, visible_rect )) return FALSE;
     OffsetRect( surface_rect, -visible_rect->left, -visible_rect->top );
     surface_rect->left &= ~31;
     surface_rect->top  &= ~31;
@@ -2761,7 +2761,7 @@ BOOL X11DRV_UpdateLayeredWindow( HWND hwnd, const UPDATELAYEREDWINDOWINFO *info,
 
     if (info->prcDirty)
     {
-        IntersectRect( &rect, &rect, info->prcDirty );
+        intersect_rect( &rect, &rect, info->prcDirty );
         memcpy( src_bits, dst_bits, bmi->bmiHeader.biSizeImage );
         NtGdiPatBlt( hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, BLACKNESS );
     }

dlls/winex11.drv/x11drv.h

@@ -885,6 +885,15 @@ static inline HWND get_active_window(void)
     return NtUserGetGUIThreadInfo( GetCurrentThreadId(), &info ) ? info.hwndActive : 0;
 }
 
+static inline BOOL intersect_rect( RECT *dst, const RECT *src1, const RECT *src2 )
+{
+    dst->left   = max( src1->left, src2->left );
+    dst->top    = max( src1->top, src2->top );
+    dst->right  = min( src1->right, src2->right );
+    dst->bottom = min( src1->bottom, src2->bottom );
+    return !IsRectEmpty( dst );
+}
+
 /* registry helpers */
 
 extern HKEY open_hkcu_key( const char *name ) DECLSPEC_HIDDEN;