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authorwolfbeast <mcwerewolf@gmail.com>2018-03-14 12:38:55 +0100
committerwolfbeast <mcwerewolf@gmail.com>2018-03-14 12:38:55 +0100
commit302f17e514772770f5555ce939b21b194514ebc3 (patch)
treeaca62ce6a23c2a9b08cfa27987586463aafef760 /dom/canvas/DocumentRendererChild.cpp
parent959f6d2881edaf7389b439ca69bcf881622d06a2 (diff)
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Revert "Bug 1438425 - Delete DocumentRenderer. r=jesup, a=RyanVM"
This reverts commit 5b69e05939c7fd3f917e2dd0f399774b3b15c886.
Diffstat (limited to 'dom/canvas/DocumentRendererChild.cpp')
-rw-r--r--dom/canvas/DocumentRendererChild.cpp94
1 files changed, 94 insertions, 0 deletions
diff --git a/dom/canvas/DocumentRendererChild.cpp b/dom/canvas/DocumentRendererChild.cpp
new file mode 100644
index 000000000..15dd5fc52
--- /dev/null
+++ b/dom/canvas/DocumentRendererChild.cpp
@@ -0,0 +1,94 @@
+/* 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;
+}