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// Copyright 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.
#ifndef UI_DISPLAY_WIN_DPI_H_
#define UI_DISPLAY_WIN_DPI_H_
#include "ui/display/display_export.h"
#include "ui/gfx/geometry/size.h"
namespace display {
namespace win {
// Deprecated. Use --force-device-scale-factor instead.
//
// Sets the device scale factor that will be used unless overridden on the
// command line by --force-device-scale-factor.
DISPLAY_EXPORT void SetDefaultDeviceScaleFactor(float scale);
// Deprecated. Use win::ScreenWin::GetScaleFactorForHWND instead.
//
// Gets the system's scale factor. For example, if the system DPI is 96 then the
// scale factor is 1.0. This does not handle per-monitor DPI.
DISPLAY_EXPORT float GetDPIScale();
// Equivalent to GetDPIScale() but ignores the --force-device-scale-factor flag.
float GetUnforcedDeviceScaleFactor();
// Returns the equivalent DPI for |device_scaling_factor|.
DISPLAY_EXPORT int GetDPIFromScalingFactor(float device_scaling_factor);
// Returns the equivalent scaling factor for |dpi|.
DISPLAY_EXPORT float GetScalingFactorFromDPI(int dpi);
} // namespace win
} // namespace display
#endif // UI_DISPLAY_WIN_DPI_H_
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