зеркало из https://github.com/mozilla/gecko-dev.git
66 строки
2.2 KiB
C++
66 строки
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 mozilla_widget_HeadlessLookAndFeel_h
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#define mozilla_widget_HeadlessLookAndFeel_h
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#include "nsXPLookAndFeel.h"
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#include "nsLookAndFeel.h"
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namespace mozilla {
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namespace widget {
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#if defined(MOZ_WIDGET_GTK)
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// Our nsLookAndFeel for Gtk relies on APIs that aren't available in headless
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// mode, so for processes that are unable to connect to a display server, we use
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// an implementation with hardcoded values.
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//
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// HeadlessLookAndFeel is used:
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//
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// * in the parent process, when full headless mode (MOZ_HEADLESS=1) is
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// enabled
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// * in content processes, when full headless mode or headless content
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// mode (security.sandbox.content.headless) is enabled, unless
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// widget.remote-look-and-feel is also enabled, in which case
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// RemoteLookAndFeel is used instead.
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//
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// The result of this is that when headless content mode is enabled, content
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// processes use values derived from the parent's nsLookAndFeel (i.e., values
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// derived from Gtk APIs) while still refraining from making any display server
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// connections.
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class HeadlessLookAndFeel : public nsXPLookAndFeel {
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public:
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explicit HeadlessLookAndFeel(const LookAndFeelCache* aCache);
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virtual ~HeadlessLookAndFeel();
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void NativeInit() final{};
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virtual nsresult NativeGetInt(IntID aID, int32_t& aResult) override;
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virtual nsresult NativeGetFloat(FloatID aID, float& aResult) override;
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virtual nsresult NativeGetColor(ColorID aID, nscolor& aResult) override;
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virtual bool NativeGetFont(FontID aID, nsString& aFontName,
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gfxFontStyle& aFontStyle) override;
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virtual void RefreshImpl() override;
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virtual char16_t GetPasswordCharacterImpl() override;
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virtual bool GetEchoPasswordImpl() override;
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};
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#else
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// When possible, we simply reuse the platform's existing nsLookAndFeel
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// implementation in headless mode.
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typedef nsLookAndFeel HeadlessLookAndFeel;
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#endif
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} // namespace widget
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} // namespace mozilla
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#endif
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