third_party/WebKit/Source/core/paint/FloatClipRecorder.cpp

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "config.h"
   6 #include "core/paint/FloatClipRecorder.h"
   7
   8 #include "platform/graphics/GraphicsContext.h"
   9 #include "platform/graphics/paint/DisplayItemList.h"
  10 #include "platform/graphics/paint/FloatClipDisplayItem.h"
  11
  12 namespace blink {
  13
  14 FloatClipRecorder::FloatClipRecorder(GraphicsContext& context, const DisplayItemClientWrapper& client, PaintPhase paintPhase, const FloatRect& clipRect)
  15     : m_context(context)
  16     , m_client(client)
  17     , m_clipType(DisplayItem::paintPhaseToFloatClipType(paintPhase))
  18 {
  19     ASSERT(m_context.displayItemList());
  20     if (m_context.displayItemList()->displayItemConstructionIsDisabled())
  21         return;
  22     m_context.displayItemList()->createAndAppend<FloatClipDisplayItem>(m_client, m_clipType, clipRect);
  23 }
  24
  25 FloatClipRecorder::~FloatClipRecorder()
  26 {
  27     DisplayItem::Type endType = DisplayItem::floatClipTypeToEndFloatClipType(m_clipType);
  28     ASSERT(m_context.displayItemList());
  29     if (!m_context.displayItemList()->displayItemConstructionIsDisabled()) {
  30         if (m_context.displayItemList()->lastDisplayItemIsNoopBegin())
  31             m_context.displayItemList()->removeLastDisplayItem();
  32         else
  33             m_context.displayItemList()->createAndAppend<EndFloatClipDisplayItem>(m_client, endType);
  34     }
  35 }
  36
  37 } // namespace blink