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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_DISPLAY_TYPES_DISPLAY_MODE_H_
#define UI_DISPLAY_TYPES_DISPLAY_MODE_H_
#include <iosfwd>
#include <memory>
#include <optional>
#include <string>
#include "ui/display/types/display_types_export.h"
#include "ui/gfx/geometry/size.h"
namespace mojo {
template <typename DataViewType, typename T>
struct StructTraits;
} // namespace mojo
namespace display {
namespace mojom {
class DisplayModeDataView;
} // namespace mojom
// This class represents the basic information for a native mode. Platforms may
// extend this class to add platform specific information about the mode.
class DISPLAY_TYPES_EXPORT DisplayMode {
public:
DisplayMode(const gfx::Size& size,
bool interlaced,
float refresh_rate,
const std::optional<float>& vsync_rate_min);
DisplayMode(const gfx::Size& size, bool interlaced, float refresh_rate);
DisplayMode(const DisplayMode&) = delete;
DisplayMode& operator=(const DisplayMode&) = delete;
~DisplayMode();
std::unique_ptr<DisplayMode> Clone() const;
std::unique_ptr<DisplayMode> CopyWithSize(const gfx::Size& size) const;
const gfx::Size& size() const { return size_; }
bool is_interlaced() const { return is_interlaced_; }
float refresh_rate() const { return refresh_rate_; }
const std::optional<float>& vsync_rate_min() const { return vsync_rate_min_; }
bool operator<(const DisplayMode& other) const;
bool operator>(const DisplayMode& other) const;
bool operator==(const DisplayMode& other) const;
std::string ToString() const;
// Returns a string representation of this mode's properties excluding those
// which may change during a configuration request. This is convenient for
// test expectations which only need to verify the non-changing properties.
std::string ToStringForTest() const;
private:
friend struct mojo::StructTraits<display::mojom::DisplayModeDataView,
std::unique_ptr<DisplayMode>>;
// Display size of the mode (i.e. hdisplay x vdisplay).
const gfx::Size size_;
// Precise refresh rate of the mode in Hz (not necessarily equal to vrefresh).
const float refresh_rate_;
// True if the mode is interlaced.
const bool is_interlaced_;
// Precise minimum vsync rate achievable by this mode in Hz. May be nullopt if
// display range limits are not specified by the EDID or if this object is
// being used in a configuration request.
const std::optional<float> vsync_rate_min_;
};
// Used by gtest to print readable errors.
DISPLAY_TYPES_EXPORT void PrintTo(const DisplayMode& mode, std::ostream* os);
} // namespace display
#endif // UI_DISPLAY_TYPES_DISPLAY_MODE_H_
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