зеркало из https://github.com/mozilla/gecko-dev.git
75 строки
2.4 KiB
C++
75 строки
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 40; 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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#include "nsICanvasRenderingContextInternal.h"
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#include "mozilla/dom/CanvasUtils.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/PresShell.h"
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#include "nsRefreshDriver.h"
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nsICanvasRenderingContextInternal::nsICanvasRenderingContextInternal() =
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default;
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nsICanvasRenderingContextInternal::~nsICanvasRenderingContextInternal() =
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default;
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mozilla::PresShell* nsICanvasRenderingContextInternal::GetPresShell() {
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if (mCanvasElement) {
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return mCanvasElement->OwnerDoc()->GetPresShell();
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}
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return nullptr;
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}
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nsIGlobalObject* nsICanvasRenderingContextInternal::GetParentObject() const {
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if (mCanvasElement) {
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return mCanvasElement->OwnerDoc()->GetScopeObject();
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}
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if (mOffscreenCanvas) {
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return mOffscreenCanvas->GetParentObject();
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}
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return nullptr;
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}
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nsIPrincipal* nsICanvasRenderingContextInternal::PrincipalOrNull() const {
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if (mCanvasElement) {
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return mCanvasElement->NodePrincipal();
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}
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if (mOffscreenCanvas) {
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nsIGlobalObject* global = mOffscreenCanvas->GetParentObject();
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if (global) {
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return global->PrincipalOrNull();
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}
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}
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return nullptr;
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}
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void nsICanvasRenderingContextInternal::RemovePostRefreshObserver() {
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if (mRefreshDriver) {
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mRefreshDriver->RemovePostRefreshObserver(this);
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mRefreshDriver = nullptr;
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}
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}
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void nsICanvasRenderingContextInternal::AddPostRefreshObserverIfNecessary() {
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if (!GetPresShell() || !GetPresShell()->GetPresContext() ||
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!GetPresShell()->GetPresContext()->RefreshDriver()) {
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return;
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}
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mRefreshDriver = GetPresShell()->GetPresContext()->RefreshDriver();
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mRefreshDriver->AddPostRefreshObserver(this);
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}
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void nsICanvasRenderingContextInternal::DoSecurityCheck(
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nsIPrincipal* aPrincipal, bool aForceWriteOnly, bool aCORSUsed) {
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if (mCanvasElement) {
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mozilla::CanvasUtils::DoDrawImageSecurityCheck(mCanvasElement, aPrincipal,
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aForceWriteOnly, aCORSUsed);
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} else if (mOffscreenCanvas) {
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mozilla::CanvasUtils::DoDrawImageSecurityCheck(mOffscreenCanvas, aPrincipal,
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aForceWriteOnly, aCORSUsed);
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}
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}
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