Move ash specific cursor code to CursorManager.

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 435 matching lines @@
     memcpy(image->pixels,
            bitmap->getPixels(),
            bitmap->width() * bitmap->height() * 4);
     bitmap->unlockPixels();
   }
 
   return image;
 }
 #endif
 
+void HideHostCursor() {
+  XDefineCursor(ui::GetXDisplay(), DefaultRootWindow(ui::GetXDisplay()),
+                GetInvisibleCursor());
+}
+
+::Cursor GetInvisibleCursor() {
+  Display* xdisplay = ui::GetXDisplay();
+  CR_DEFINE_STATIC_LOCAL(XScopedCursor, invisible_cursor, (0U, xdisplay));
+  if (invisible_cursor.get())
+    return invisible_cursor.get();
+
+  // Initialize invisible cursor.
+  char nodata[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+  XColor black;
+  black.red = black.green = black.blue = 0;
+  Pixmap blank = XCreateBitmapFromData(xdisplay, DefaultRootWindow(xdisplay),
+                                       nodata, 8, 8);
+  invisible_cursor.reset(XCreatePixmapCursor(xdisplay, blank, blank,
+                                             &black, &black, 0, 0));
+  XFreePixmap(xdisplay, blank);
+  return invisible_cursor.get();
+}
+
 XID GetX11RootWindow() {
   return DefaultRootWindow(GetXDisplay());
 }
 
 bool GetCurrentDesktop(int* desktop) {
   return GetIntProperty(GetX11RootWindow(), "_NET_CURRENT_DESKTOP", desktop);
 }
 
 #if defined(TOOLKIT_GTK)
 XID GetX11WindowFromGtkWidget(GtkWidget* widget) {
@@ skipping 863 matching lines @@
   key_event.keycode = XKeyEventKeyCode(key_code, flags, display);
   key_event.same_screen = 1;
   event->type = key_event.type;
   event->xkey = key_event;
 }
 
 XScopedString::~XScopedString() {
   XFree(string_);
 }
 
+XScopedCursor::XScopedCursor(::Cursor cursor, Display* display)
+    : cursor_(cursor),
+      display_(display) {
+}
+
+XScopedCursor::~XScopedCursor() {
+  reset(0U);
+}
+
+::Cursor XScopedCursor::get() const {
+  return cursor_;
+}
+
+void XScopedCursor::reset(::Cursor cursor) {
+  if (cursor_)
+    XFreeCursor(display_, cursor_);
+  cursor_ = cursor;
+}
+
 // ----------------------------------------------------------------------------
 // These functions are declared in x11_util_internal.h because they require
 // XLib.h to be included, and it conflicts with many other headers.
 XRenderPictFormat* GetRenderARGB32Format(Display* dpy) {
   static XRenderPictFormat* pictformat = NULL;
   if (pictformat)
     return pictformat;
 
   // First look for a 32-bit format which ignores the alpha value
   XRenderPictFormat templ;
@@ skipping 110 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