widget/ScreenProxy.h
author Rob Wu <rob@robwu.nl>
Sat, 24 Sep 2016 11:16:32 +0200
changeset 320058 a41f871e2d1b37754bbd1001c36c075511b49342
parent 315846 75abc730f8202005d6469a7ec324b7aba5a89374
permissions -rw-r--r--
Bug 1299411 - Decouple Port implementation from API r=aswan Decoupled the API from the implementation. From now on it is possible to create Port instances without generating an API. This allows us to internally use Ports to pass around messages with minimal overhead (in the form of unnecessary clones of messages). This will be used by native messaging. This commit has no behavioral change, it is mostly moving around some code and storing the internal message listener in a set. MozReview-Commit-ID: 4h0LNJvTH9R

/* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 2; -*- */
/* vim: set sw=4 ts=8 et tw=80 : */
/* 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 mozilla_widget_ScreenProxy_h
#define mozilla_widget_ScreenProxy_h

#include "nsBaseScreen.h"
#include "mozilla/dom/PScreenManagerChild.h"
#include "mozilla/dom/TabChild.h"

class nsScreenManagerProxy;

namespace mozilla {
namespace widget {

class ScreenProxy : public nsBaseScreen
{
public:
    ScreenProxy(nsScreenManagerProxy* aScreenManager,
                mozilla::dom::ScreenDetails aDetails);
    ~ScreenProxy() {};

    NS_IMETHOD GetId(uint32_t* aId) override;

    NS_IMETHOD GetRect(int32_t* aLeft,
                       int32_t* aTop,
                       int32_t* aWidth,
                       int32_t* aHeight) override;
    NS_IMETHOD GetRectDisplayPix(int32_t* aLeft,
                                 int32_t* aTop,
                                 int32_t* aWidth,
                                 int32_t* aHeight) override;
    NS_IMETHOD GetAvailRect(int32_t* aLeft,
                            int32_t* aTop,
                            int32_t* aWidth,
                            int32_t* aHeight) override;
    NS_IMETHOD GetAvailRectDisplayPix(int32_t* aLeft,
                                      int32_t* aTop,
                                      int32_t* aWidth,
                                      int32_t* aHeight) override;
    NS_IMETHOD GetPixelDepth(int32_t* aPixelDepth) override;
    NS_IMETHOD GetColorDepth(int32_t* aColorDepth) override;

private:

    void PopulateByDetails(mozilla::dom::ScreenDetails aDetails);
    bool EnsureCacheIsValid();
    void InvalidateCacheOnNextTick();
    void InvalidateCache();

    double mContentsScaleFactor;
    RefPtr<nsScreenManagerProxy> mScreenManager;
    uint32_t mId;
    int32_t mPixelDepth;
    int32_t mColorDepth;
    nsIntRect mRect;
    nsIntRect mRectDisplayPix;
    nsIntRect mAvailRect;
    nsIntRect mAvailRectDisplayPix;
    bool mCacheValid;
    bool mCacheWillInvalidate;
};

} // namespace widget
} // namespace mozilla

#endif