root/ui/views/widget/monitor_win.cc

DEFINITIONS

1. GetMonitorBoundsForRect
2. GetTopmostAutoHideTaskbarForEdge

// 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.

#include "ui/views/widget/monitor_win.h"

#include <shellapi.h>

#include "base/logging.h"
#include "base/win/win_util.h"
#include "ui/gfx/rect.h"

namespace views {

gfx::Rect GetMonitorBoundsForRect(const gfx::Rect& rect) {
  RECT p_rect = rect.ToRECT();
  HMONITOR monitor = MonitorFromRect(&p_rect, MONITOR_DEFAULTTONEAREST);
  if (monitor) {
    MONITORINFO mi = {0};
    mi.cbSize = sizeof(mi);
    GetMonitorInfo(monitor, &mi);
    return gfx::Rect(mi.rcWork);
  }
  NOTREACHED();
  return gfx::Rect();
}

HWND GetTopmostAutoHideTaskbarForEdge(UINT edge, HMONITOR monitor) {
  // NOTE: this may be invoked on a background thread.
  APPBARDATA taskbar_data =  { sizeof(APPBARDATA), NULL, 0, edge };
  HWND taskbar = reinterpret_cast<HWND>(SHAppBarMessage(ABM_GETAUTOHIDEBAR,
                                                        &taskbar_data));
  return (::IsWindow(taskbar) && (monitor != NULL) &&
         (MonitorFromWindow(taskbar, MONITOR_DEFAULTTONULL) == monitor) &&
         (GetWindowLong(taskbar, GWL_EXSTYLE) & WS_EX_TOPMOST)) ?
      taskbar : NULL;
}

}  // namespace views