gecko-dev/layout/style/ComputedStyleInlines.h

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C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 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/. */
/*
* Inlined methods for ComputedStyle. Will just redirect to
* GeckoComputedStyle methods when compiled without stylo, but will do
* virtual dispatch (by checking which kind of container it is)
* in stylo mode.
*/
#ifndef ComputedStyleInlines_h
#define ComputedStyleInlines_h
#include "mozilla/ComputedStyle.h"
#include "MainThreadUtils.h"
#include "mozilla/Assertions.h"
#include "mozilla/Unused.h"
#include "nsStyleStruct.h"
namespace mozilla {
namespace detail {
template <typename T, const T* (ComputedStyle::*Method)() const>
void TriggerImageLoads(dom::Document& aDocument, const ComputedStyle* aOldStyle,
ComputedStyle* aStyle) {
if constexpr (T::kHasTriggerImageLoads) {
auto* old = aOldStyle ? (aOldStyle->*Method)() : nullptr;
auto* current = const_cast<T*>((aStyle->*Method)());
current->TriggerImageLoads(aDocument, old);
} else {
Unused << aOldStyle;
Unused << aStyle;
}
}
} // namespace detail
void ComputedStyle::StartImageLoads(dom::Document& aDocument,
const ComputedStyle* aOldStyle) {
MOZ_ASSERT(NS_IsMainThread());
#define STYLE_STRUCT(name_) \
detail::TriggerImageLoads<nsStyle##name_, &ComputedStyle::Style##name_>( \
aDocument, aOldStyle, this);
#include "nsStyleStructList.h"
#undef STYLE_STRUCT
}
} // namespace mozilla
#endif // ComputedStyleInlines_h