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dc3ae62544
This follows what we're already doing for EGL: a refcounted object which can own the X connection, where we hold a weak reference from the library object so that multiple contexts opportunistically share the display but we close the connection when the last context is freed/GCed. In a process where GTK is initialized, we borrow its display instead of opening a new one, which preserves the existing behavior. Differential Revision: https://phabricator.services.mozilla.com/D112195
42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_XLIBDISPLAY_H
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#define GFX_XLIBDISPLAY_H
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#include <X11/Xlib.h>
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#include "X11UndefineNone.h"
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#include <memory>
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namespace mozilla::gfx {
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// Represents an X11 display connection which may be either borrowed
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// (e.g., from GTK) or owned; in the latter case it will be closed
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// with this object becomes unreferenced. See also the `EglDisplay`
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// class.
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class XlibDisplay final {
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public:
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~XlibDisplay();
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// Explicit `->get()` may be needed with some `Xlib.h` macros that
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// expand to C-style pointer casts.
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Display* get() const { return mDisplay; }
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operator Display*() const { return mDisplay; }
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static std::shared_ptr<XlibDisplay> Borrow(Display* aDisplay);
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static std::shared_ptr<XlibDisplay> Open(const char* aDisplayName);
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private:
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Display* const mDisplay;
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bool const mOwned;
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XlibDisplay(Display*, bool);
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};
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} // namespace mozilla::gfx
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#endif // GFX_XLIBDISPLAY_H
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