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/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#include "nsICanvasRenderingContextInternal.h"
#include "mozilla/dom/CanvasUtils.h"
#include "mozilla/dom/Document.h"
#include "mozilla/PresShell.h"
#include "nsRefreshDriver.h"
nsICanvasRenderingContextInternal::nsICanvasRenderingContextInternal() =
default;
nsICanvasRenderingContextInternal::~nsICanvasRenderingContextInternal() =
default;
mozilla::PresShell* nsICanvasRenderingContextInternal::GetPresShell() {
if (mCanvasElement) {
return mCanvasElement->OwnerDoc()->GetPresShell();
}
return nullptr;
}
nsIGlobalObject* nsICanvasRenderingContextInternal::GetParentObject() const {
if (mCanvasElement) {
return mCanvasElement->OwnerDoc()->GetScopeObject();
}
if (mOffscreenCanvas) {
return mOffscreenCanvas->GetParentObject();
}
return nullptr;
}
nsIPrincipal* nsICanvasRenderingContextInternal::PrincipalOrNull() const {
if (mCanvasElement) {
return mCanvasElement->NodePrincipal();
}
if (mOffscreenCanvas) {
nsIGlobalObject* global = mOffscreenCanvas->GetParentObject();
if (global) {
return global->PrincipalOrNull();
}
}
return nullptr;
}
void nsICanvasRenderingContextInternal::RemovePostRefreshObserver() {
if (mRefreshDriver) {
mRefreshDriver->RemovePostRefreshObserver(this);
mRefreshDriver = nullptr;
}
}
void nsICanvasRenderingContextInternal::AddPostRefreshObserverIfNecessary() {
if (!GetPresShell() || !GetPresShell()->GetPresContext() ||
!GetPresShell()->GetPresContext()->RefreshDriver()) {
return;
}
mRefreshDriver = GetPresShell()->GetPresContext()->RefreshDriver();
mRefreshDriver->AddPostRefreshObserver(this);
}
void nsICanvasRenderingContextInternal::DoSecurityCheck(
nsIPrincipal* aPrincipal, bool aForceWriteOnly, bool aCORSUsed) {
if (mCanvasElement) {
mozilla::CanvasUtils::DoDrawImageSecurityCheck(mCanvasElement, aPrincipal,
aForceWriteOnly, aCORSUsed);
} else if (mOffscreenCanvas) {
mozilla::CanvasUtils::DoDrawImageSecurityCheck(mOffscreenCanvas, aPrincipal,
aForceWriteOnly, aCORSUsed);
}
}
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