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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "platform/graphics/ContentLayerDelegate.h"
#include "platform/EventTracer.h"
#include "platform/geometry/IntRect.h"
#include "platform/graphics/GraphicsContext.h"
#include "platform/graphics/paint/DisplayItemList.h"
#include "platform/transforms/AffineTransform.h"
#include "platform/transforms/TransformationMatrix.h"
#include "public/platform/WebDisplayItemList.h"
#include "public/platform/WebFloatRect.h"
#include "public/platform/WebRect.h"
#include "third_party/skia/include/core/SkPicture.h"
#include "third_party/skia/include/core/SkPictureRecorder.h"
namespace blink {
ContentLayerDelegate::ContentLayerDelegate(GraphicsContextPainter* painter)
: m_painter(painter)
, m_opaque(false)
{
}
ContentLayerDelegate::~ContentLayerDelegate()
{
}
void ContentLayerDelegate::paintContents(
SkCanvas* canvas, const WebRect& clip, bool canPaintLCDText,
WebContentLayerClient::GraphicsContextStatus contextStatus)
{
static const unsigned char* annotationsEnabled = 0;
if (UNLIKELY(!annotationsEnabled))
annotationsEnabled = EventTracer::getTraceCategoryEnabledFlag(TRACE_DISABLED_BY_DEFAULT("blink.graphics_context_annotations"));
GraphicsContext context(canvas, m_painter->displayItemList(), contextStatus == WebContentLayerClient::GraphicsContextEnabled ? GraphicsContext::NothingDisabled : GraphicsContext::FullyDisabled);
context.setCertainlyOpaque(m_opaque);
context.setShouldSmoothFonts(canPaintLCDText);
if (*annotationsEnabled)
context.setAnnotationMode(AnnotateAll);
m_painter->paint(context, clip);
}
void ContentLayerDelegate::paintContents(
WebDisplayItemList* webDisplayItemList, const WebRect& clip, bool canPaintLCDText,
WebContentLayerClient::GraphicsContextStatus contextStatus)
{
// Once Slimming Paint is fully implemented, this method will no longer
// be needed since Blink will be in charge of creating the display list
// during the document lifecylcle.
// Some layers don't yet produce display lists. To handle such layers, we
// create a canvas backed by an SkPicture, and manually insert this
// SkPicture into the WebDisplayItemList when the layer's display list is
// empty.
SkPictureRecorder recorder;
RefPtr<SkPicture> picture;
SkCanvas* canvas = recorder.beginRecording(clip.width, clip.height);
canvas->save();
canvas->translate(-clip.x, -clip.y);
canvas->clipRect(SkRect::MakeXYWH(clip.x, clip.y, clip.width, clip.height));
paintContents(canvas, clip, canPaintLCDText, contextStatus);
canvas->restore();
picture = adoptRef(recorder.endRecording());
ASSERT(m_painter->displayItemList());
const PaintList& paintList = m_painter->displayItemList()->paintList();
for (PaintList::const_iterator it = paintList.begin(); it != paintList.end(); ++it)
(*it)->appendToWebDisplayItemList(webDisplayItemList);
}
} // namespace blink
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