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/* 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 "mozilla/ipc/DocumentRendererChild.h"
#include "base/basictypes.h"
#include "gfx2DGlue.h"
#include "gfxPattern.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/RefPtr.h"
#include "nsPIDOMWindow.h"
#include "nsIDOMWindow.h"
#include "nsIDocShell.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsComponentManagerUtils.h"
#include "nsCSSParser.h"
#include "nsPresContext.h"
#include "nsCOMPtr.h"
#include "nsColor.h"
#include "gfxContext.h"
#include "nsLayoutUtils.h"
#include "nsContentUtils.h"
#include "nsCSSValue.h"
#include "nsRuleNode.h"
#include "mozilla/gfx/Matrix.h"
using namespace mozilla;
using namespace mozilla::gfx;
using namespace mozilla::ipc;
DocumentRendererChild::DocumentRendererChild()
{}
DocumentRendererChild::~DocumentRendererChild()
{}
bool
DocumentRendererChild::RenderDocument(nsPIDOMWindowOuter* window,
const nsRect& documentRect,
const mozilla::gfx::Matrix& transform,
const nsString& aBGColor,
uint32_t renderFlags,
bool flushLayout,
const nsIntSize& renderSize,
nsCString& data)
{
if (flushLayout)
nsContentUtils::FlushLayoutForTree(window);
RefPtr<nsPresContext> presContext;
if (window) {
nsIDocShell* docshell = window->GetDocShell();
if (docshell) {
docshell->GetPresContext(getter_AddRefs(presContext));
}
}
if (!presContext)
return false;
nsCSSParser parser;
nsCSSValue bgColorValue;
if (!parser.ParseColorString(aBGColor, nullptr, 0, bgColorValue)) {
return false;
}
nscolor bgColor;
if (!nsRuleNode::ComputeColor(bgColorValue, presContext, nullptr, bgColor)) {
return false;
}
// Draw directly into the output array.
data.SetLength(renderSize.width * renderSize.height * 4);
RefPtr<DrawTarget> dt =
Factory::CreateDrawTargetForData(BackendType::CAIRO,
reinterpret_cast<uint8_t*>(data.BeginWriting()),
IntSize(renderSize.width, renderSize.height),
4 * renderSize.width,
SurfaceFormat::B8G8R8A8);
if (!dt || !dt->IsValid()) {
gfxWarning() << "DocumentRendererChild::RenderDocument failed to Factory::CreateDrawTargetForData";
return false;
}
RefPtr<gfxContext> ctx = gfxContext::CreateOrNull(dt);
MOZ_ASSERT(ctx); // already checked the draw target above
ctx->SetMatrix(mozilla::gfx::ThebesMatrix(transform));
nsCOMPtr<nsIPresShell> shell = presContext->PresShell();
shell->RenderDocument(documentRect, renderFlags, bgColor, ctx);
return true;
}
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