cef/include/views/cef_display.h

// Copyright (c) 2016 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//    * Redistributions of source code must retain the above copyright
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//    * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//    * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
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// written permission.
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// ---------------------------------------------------------------------------
//
// The contents of this file must follow a specific format in order to
// support the CEF translator tool. See the translator.README.txt file in the
// tools directory for more information.
//

#ifndef CEF_INCLUDE_VIEWS_CEF_DISPLAY_H_
#define CEF_INCLUDE_VIEWS_CEF_DISPLAY_H_
#pragma once

#include <vector>

#include "include/cef_base.h"

///
// This class typically, but not always, corresponds to a physical display
// connected to the system. A fake Display may exist on a headless system, or a
// Display may correspond to a remote, virtual display. All size and position
// values are in density independent pixels (DIP) unless otherwise indicated.
// Methods must be called on the browser process UI thread unless otherwise
// indicated.
///
/*--cef(source=library)--*/
class CefDisplay : public CefBaseRefCounted {
 public:
  ///
  // Returns the primary Display.
  ///
  /*--cef()--*/
  static CefRefPtr<CefDisplay> GetPrimaryDisplay();

  ///
  // Returns the Display nearest |point|. Set |input_pixel_coords| to true if
  // |point| is in pixel coordinates instead of density independent pixels
  // (DIP).
  ///
  /*--cef()--*/
  static CefRefPtr<CefDisplay> GetDisplayNearestPoint(const CefPoint& point,
                                                      bool input_pixel_coords);

  ///
  // Returns the Display that most closely intersects |bounds|.  Set
  // |input_pixel_coords| to true if |bounds| is in pixel coordinates instead of
  // density independent pixels (DIP).
  ///
  /*--cef()--*/
  static CefRefPtr<CefDisplay> GetDisplayMatchingBounds(
      const CefRect& bounds,
      bool input_pixel_coords);

  ///
  // Returns the total number of Displays. Mirrored displays are excluded; this
  // method is intended to return the number of distinct, usable displays.
  ///
  /*--cef()--*/
  static size_t GetDisplayCount();

  ///
  // Returns all Displays. Mirrored displays are excluded; this method is
  // intended to return distinct, usable displays.
  ///
  /*--cef(count_func=displays:GetDisplayCount)--*/
  static void GetAllDisplays(std::vector<CefRefPtr<CefDisplay>>& displays);

  ///
  // Returns the unique identifier for this Display.
  ///
  /*--cef()--*/
  virtual int64 GetID() = 0;

  ///
  // Returns this Display's device pixel scale factor. This specifies how much
  // the UI should be scaled when the actual output has more pixels than
  // standard displays (which is around 100~120dpi). The potential return values
  // differ by platform.
  ///
  /*--cef()--*/
  virtual float GetDeviceScaleFactor() = 0;

  ///
  // Convert |point| from density independent pixels (DIP) to pixel coordinates
  // using this Display's device scale factor.
  ///
  /*--cef()--*/
  virtual void ConvertPointToPixels(CefPoint& point) = 0;

  ///
  // Convert |point| from pixel coordinates to density independent pixels (DIP)
  // using this Display's device scale factor.
  ///
  /*--cef()--*/
  virtual void ConvertPointFromPixels(CefPoint& point) = 0;

  ///
  // Returns this Display's bounds. This is the full size of the display.
  ///
  /*--cef()--*/
  virtual CefRect GetBounds() = 0;

  ///
  // Returns this Display's work area. This excludes areas of the display that
  // are occupied for window manager toolbars, etc.
  ///
  /*--cef()--*/
  virtual CefRect GetWorkArea() = 0;

  ///
  // Returns this Display's rotation in degrees.
  ///
  /*--cef()--*/
  virtual int GetRotation() = 0;
};

#endif  // CEF_INCLUDE_VIEWS_CEF_DISPLAY_H_