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a02611e830
The new names Create{,PreservingTransform}OrNull() better communicate that
these functions (a) do object creation, and (b) are fallible.
--HG--
extra : rebase_source : a36bd9a2bcdfae281868959403f811f2bc690ad4
95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
/* 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 "mozilla/ipc/DocumentRendererChild.h"
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#include "base/basictypes.h"
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#include "gfx2DGlue.h"
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#include "gfxPattern.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/RefPtr.h"
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#include "nsPIDOMWindow.h"
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#include "nsIDOMWindow.h"
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#include "nsIDocShell.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsComponentManagerUtils.h"
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#include "nsCSSParser.h"
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#include "nsPresContext.h"
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#include "nsCOMPtr.h"
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#include "nsColor.h"
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#include "gfxContext.h"
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#include "nsLayoutUtils.h"
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#include "nsContentUtils.h"
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#include "nsCSSValue.h"
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#include "nsRuleNode.h"
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#include "mozilla/gfx/Matrix.h"
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using namespace mozilla;
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using namespace mozilla::gfx;
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using namespace mozilla::ipc;
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DocumentRendererChild::DocumentRendererChild()
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{}
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DocumentRendererChild::~DocumentRendererChild()
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{}
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bool
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DocumentRendererChild::RenderDocument(nsPIDOMWindowOuter* window,
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const nsRect& documentRect,
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const mozilla::gfx::Matrix& transform,
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const nsString& aBGColor,
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uint32_t renderFlags,
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bool flushLayout,
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const nsIntSize& renderSize,
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nsCString& data)
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{
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if (flushLayout)
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nsContentUtils::FlushLayoutForTree(window);
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RefPtr<nsPresContext> presContext;
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if (window) {
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nsIDocShell* docshell = window->GetDocShell();
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if (docshell) {
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docshell->GetPresContext(getter_AddRefs(presContext));
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}
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}
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if (!presContext)
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return false;
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nsCSSParser parser;
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nsCSSValue bgColorValue;
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if (!parser.ParseColorString(aBGColor, nullptr, 0, bgColorValue)) {
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return false;
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}
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nscolor bgColor;
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if (!nsRuleNode::ComputeColor(bgColorValue, presContext, nullptr, bgColor)) {
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return false;
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}
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// Draw directly into the output array.
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data.SetLength(renderSize.width * renderSize.height * 4);
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RefPtr<DrawTarget> dt =
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Factory::CreateDrawTargetForData(BackendType::CAIRO,
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reinterpret_cast<uint8_t*>(data.BeginWriting()),
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IntSize(renderSize.width, renderSize.height),
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4 * renderSize.width,
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SurfaceFormat::B8G8R8A8);
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if (!dt || !dt->IsValid()) {
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gfxWarning() << "DocumentRendererChild::RenderDocument failed to Factory::CreateDrawTargetForData";
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return false;
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}
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RefPtr<gfxContext> ctx = gfxContext::CreateOrNull(dt);
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MOZ_ASSERT(ctx); // already checked the draw target above
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ctx->SetMatrix(mozilla::gfx::ThebesMatrix(transform));
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nsCOMPtr<nsIPresShell> shell = presContext->PresShell();
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shell->RenderDocument(documentRect, renderFlags, bgColor, ctx);
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return true;
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}
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