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66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef UI_GFX_ANDROID_DEVICE_DISPLAY_INFO_H_
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#define UI_GFX_ANDROID_DEVICE_DISPLAY_INFO_H_
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#include <jni.h>
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#include <string>
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#include "base/basictypes.h"
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#include "ui/gfx/gfx_export.h"
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namespace gfx {
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// Facilitates access to device information typically only
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// available using the Android SDK, including Display properties.
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class GFX_EXPORT DeviceDisplayInfo {
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public:
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DeviceDisplayInfo();
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~DeviceDisplayInfo();
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// Returns display height in physical pixels.
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int GetDisplayHeight();
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// Returns display width in physical pixels.
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int GetDisplayWidth();
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// Returns real display height in physical pixels.
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// This version does not subtract window decorations etc.
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// WARNING: This is only supported on JB-MR1 (sdk >= 17). Either
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// check the SDK-level, or check for '0' being returned.
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int GetPhysicalDisplayHeight();
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// Returns real display width in physical pixels.
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// This version does not subtract window decorations etc.
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// WARNING: This is only supported on JB-MR1 (sdk >= 17). Either
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// check the SDK-level, or check for '0' being returned.
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int GetPhysicalDisplayWidth();
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// Returns number of bits per pixel.
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int GetBitsPerPixel();
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// Returns number of bits per component.
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int GetBitsPerComponent();
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// Returns a scaling factor for Density Independent Pixel unit
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// (1.0 is 160dpi, 0.75 is 120dpi, 2.0 is 320dpi).
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double GetDIPScale();
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// Smallest possible screen size in density-independent pixels.
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int GetSmallestDIPWidth();
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// Returns the display rotation angle from its natural orientation. Expected
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// values are one of { 0, 90, 180, 270 }.
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// See DeviceDispayInfo.java for more information.
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int GetRotationDegrees();
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private:
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DISALLOW_COPY_AND_ASSIGN(DeviceDisplayInfo);
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};
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} // namespace gfx
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#endif // UI_GFX_ANDROID_DEVICE_DISPLAY_INFO_H_
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