gecko-dev/widget/nsBaseScreen.h
Samael Wang 3810bc3903 Bug 1350643 - Part 3: Add GetDPI to nsIScreen & ScreenDetails. r=kanru
MozReview-Commit-ID: HEFyuYV26Wy

--HG--
extra : rebase_source : fb172f4ba99ab7119036ddf4ec1b3eeeaead186c
2017-06-06 18:09:34 +08:00

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1.2 KiB
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=8 et :
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsBaseScreen_h
#define nsBaseScreen_h
#include "mozilla/Attributes.h"
#include "nsIScreen.h"
class nsBaseScreen : public nsIScreen
{
public:
nsBaseScreen();
NS_DECL_ISUPPORTS
// nsIScreen interface
// These simply forward to the device-pixel versions;
// implementations where desktop pixels may not correspond
// to per-screen device pixels must override.
NS_IMETHOD GetRectDisplayPix(int32_t *outLeft, int32_t *outTop,
int32_t *outWidth, int32_t *outHeight) override;
NS_IMETHOD GetAvailRectDisplayPix(int32_t *outLeft, int32_t *outTop,
int32_t *outWidth, int32_t *outHeight) override;
NS_IMETHOD GetContentsScaleFactor(double* aContentsScaleFactor) override;
NS_IMETHOD GetDefaultCSSScaleFactor(double* aScaleFactor) override;
NS_IMETHOD GetDpi(float* aDPI) override;
protected:
virtual ~nsBaseScreen();
};
#endif // nsBaseScreen_h