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