Add unittests for X11TopmostWindowFinder

ui/base/x/x11_util.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file defines utility functions for X11 (Linux only). This code has been
 // ported from XCB since we can't use XCB on Ubuntu while its 32-bit support
 // remains woefully incomplete.
 
 #include "ui/base/x/x11_util.h"
 
@@ skipping 198 matching lines @@
 
   XCustomCursorCache() {}
   ~XCustomCursorCache() {
     Clear();
   }
 
   std::map< ::Cursor, XCustomCursor*> cache_;
   DISALLOW_COPY_AND_ASSIGN(XCustomCursorCache);
 };
 
-bool IsShapeAvailable() {
-  int dummy;
-  static bool is_shape_available =
-    XShapeQueryExtension(gfx::GetXDisplay(), &dummy, &dummy);
-  return is_shape_available;
-
-}
-
 }  // namespace
 
 bool IsXInput2Available() {
   return DeviceDataManager::GetInstance()->IsXInput2Available();
 }
 
 static SharedMemorySupport DoQuerySharedMemorySupport(XDisplay* dpy) {
   int dummy;
   Bool pixmaps_supported;
   // Query the server's support for XSHM.
@@ skipping 215 matching lines @@
   black.red = black.green = black.blue = 0;
   Pixmap blank = XCreateBitmapFromData(xdisplay,
                                        DefaultRootWindow(xdisplay),
                                        nodata, 8, 8);
   invisible_cursor = XCreatePixmapCursor(xdisplay, blank, blank,
                                          &black, &black, 0, 0);
   XFreePixmap(xdisplay, blank);
   return invisible_cursor;
 }
 
+void SetUseOSWindowFrame(XID window, bool use_os_window_frame) {
+  // This data structure represents additional hints that we send to the window
+  // manager and has a direct lineage back to Motif, which defined this de facto
+  // standard. This struct doesn't seem 64-bit safe though, but it's what GDK
+  // does.
+  typedef struct {
+    unsigned long flags;
+    unsigned long functions;
+    unsigned long decorations;
+    long input_mode;
+    unsigned long status;
+  } MotifWmHints;
+
+  MotifWmHints motif_hints;
+  memset(&motif_hints, 0, sizeof(motif_hints));
+  // Signals that the reader of the _MOTIF_WM_HINTS property should pay
+  // attention to the value of |decorations|.
+  motif_hints.flags = (1L << 1);
+  motif_hints.decorations = use_os_window_frame ? 1 : 0;
+
+  ::Atom hint_atom = GetAtom("_MOTIF_WM_HINTS");
+  XChangeProperty(gfx::GetXDisplay(),
+                  window,
+                  hint_atom,
+                  hint_atom,
+                  32,
+                  PropModeReplace,
+                  reinterpret_cast<unsigned char*>(&motif_hints),
+                  sizeof(MotifWmHints)/sizeof(long));
+}
+
+bool IsShapeExtensionAvailable() {
+  int dummy;
+  static bool is_shape_available =
+      XShapeQueryExtension(gfx::GetXDisplay(), &dummy, &dummy);
+  return is_shape_available;
+}
+
 XID GetX11RootWindow() {
   return DefaultRootWindow(gfx::GetXDisplay());
 }
 
 bool GetCurrentDesktop(int* desktop) {
   return GetIntProperty(GetX11RootWindow(), "_NET_CURRENT_DESKTOP", desktop);
 }
 
 void SetHideTitlebarWhenMaximizedProperty(XID window,
                                           HideTitlebarWhenMaximized property) {
@@ skipping 88 matching lines @@
 bool WindowContainsPoint(XID window, gfx::Point screen_loc) {
   TRACE_EVENT0("ui", "WindowContainsPoint");
 
   gfx::Rect window_rect;
   if (!GetWindowRect(window, &window_rect))
     return false;
 
   if (!window_rect.Contains(screen_loc))
     return false;
 
-  if (!IsShapeAvailable())
+  if (!IsShapeExtensionAvailable())
     return true;
 
   // According to http://www.x.org/releases/X11R7.6/doc/libXext/shapelib.html,
   // if an X display supports the shape extension the bounds of a window are
   // defined as the intersection of the window bounds and the interior
   // rectangles. This means to determine if a point is inside a window for the
   // purpose of input handling we have to check the rectangles in the ShapeInput
   // list.
   // According to http://www.x.org/releases/current/doc/xextproto/shape.html,
   // we need to also respect the ShapeBounding rectangles.
@@ skipping 256 matching lines @@
                   window,
                   name_atom,
                   type_atom,
                   32,  // size in bits of items in 'value'
                   PropModeReplace,
                   reinterpret_cast<const unsigned char*>(data.get()),
                   value.size());  // num items
   return !err_tracker.FoundNewError();
 }
 
+bool SetAtomProperty(XID window,
+                     const std::string& name,
+                     const std::string& type,
+                     Atom value) {
+  std::vector<Atom> values(1, value);
+  return SetAtomArrayProperty(window, name, type, values);
+}
+
 bool SetAtomArrayProperty(XID window,
                           const std::string& name,
                           const std::string& type,
                           const std::vector<Atom>& value) {
   DCHECK(!value.empty());
   Atom name_atom = GetAtom(name.c_str());
   Atom type_atom = GetAtom(type.c_str());
 
   // XChangeProperty() expects values of type 32 to be longs.
   scoped_ptr<Atom[]> data(new Atom[value.size()]);
@@ skipping 491 matching lines @@
       << "request_code " << static_cast<int>(error_event.request_code) << ", "
       << "minor_code " << static_cast<int>(error_event.minor_code)
       << " (" << request_str << ")";
 }
 
 // ----------------------------------------------------------------------------
 // End of x11_util_internal.h
 
 
 }  // namespace ui