src/third_party/WebKit/Source/platform/graphics/GraphicsLayerDebugInfo.cpp

   1 /*
   2  * Copyright (C) 2014 Google Inc. All rights reserved.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public License
  15  * along with this library; see the file COPYING.LIB.  If not, write to
  16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA 02110-1301, USA.
  18  */
  19
  20 #include "config.h"
  21 #include "platform/graphics/GraphicsLayerDebugInfo.h"
  22
  23 #include "public/platform/WebGraphicsLayerDebugInfo.h"
  24 #include "public/platform/WebVector.h"
  25 #include "wtf/text/CString.h"
  26
  27 namespace blink {
  28
  29 GraphicsLayerDebugInfo::GraphicsLayerDebugInfo()
  30     : m_compositingReasons(CompositingReasonNone)
  31     , m_ownerNodeId(0)
  32 {
  33 }
  34
  35 GraphicsLayerDebugInfo::~GraphicsLayerDebugInfo() { }
  36
  37 void GraphicsLayerDebugInfo::appendAsTraceFormat(WebString* out) const
  38 {
  39     RefPtr<JSONObject> jsonObject = JSONObject::create();
  40     appendLayoutRects(jsonObject.get());
  41     appendAnnotatedInvalidateRects(jsonObject.get());
  42     appendCompositingReasons(jsonObject.get());
  43     appendDebugName(jsonObject.get());
  44     appendOwnerNodeId(jsonObject.get());
  45     *out = jsonObject->toJSONString();
  46 }
  47
  48 GraphicsLayerDebugInfo* GraphicsLayerDebugInfo::clone() const
  49 {
  50     GraphicsLayerDebugInfo* toReturn = new GraphicsLayerDebugInfo();
  51     for (size_t i = 0; i < m_currentLayoutRects.size(); ++i)
  52         toReturn->currentLayoutRects().append(m_currentLayoutRects[i]);
  53     toReturn->setCompositingReasons(m_compositingReasons);
  54     toReturn->setOwnerNodeId(m_ownerNodeId);
  55     toReturn->m_invalidations = m_invalidations;
  56     toReturn->m_previousInvalidations = m_previousInvalidations;
  57     return toReturn;
  58 }
  59
  60 void GraphicsLayerDebugInfo::appendLayoutRects(JSONObject* jsonObject) const
  61 {
  62     RefPtr<JSONArray> jsonArray = JSONArray::create();
  63     for (size_t i = 0; i < m_currentLayoutRects.size(); i++) {
  64         const LayoutRect& rect = m_currentLayoutRects[i];
  65         RefPtr<JSONObject> rectContainer = JSONObject::create();
  66         RefPtr<JSONArray> rectArray = JSONArray::create();
  67         rectArray->pushNumber(rect.x().toFloat());
  68         rectArray->pushNumber(rect.y().toFloat());
  69         rectArray->pushNumber(rect.maxX().toFloat());
  70         rectArray->pushNumber(rect.maxY().toFloat());
  71         rectContainer->setArray("geometry_rect", rectArray);
  72         jsonArray->pushObject(rectContainer);
  73     }
  74     jsonObject->setArray("layout_rects", jsonArray);
  75 }
  76
  77 void GraphicsLayerDebugInfo::appendAnnotatedInvalidateRects(JSONObject* jsonObject) const
  78 {
  79     RefPtr<JSONArray> jsonArray = JSONArray::create();
  80     for (const auto& annotatedRect : m_previousInvalidations) {
  81         RefPtr<JSONObject> rectContainer = JSONObject::create();
  82         RefPtr<JSONArray> rectArray = JSONArray::create();
  83         const FloatRect& rect = annotatedRect.rect;
  84         rectArray->pushNumber(rect.x());
  85         rectArray->pushNumber(rect.y());
  86         rectArray->pushNumber(rect.width());
  87         rectArray->pushNumber(rect.height());
  88         rectContainer->setArray("geometry_rect", rectArray);
  89         rectContainer->setString("reason", paintInvalidationReasonToString(annotatedRect.reason));
  90         jsonArray->pushObject(rectContainer);
  91     }
  92     jsonObject->setArray("annotated_invalidation_rects", jsonArray);
  93 }
  94
  95 void GraphicsLayerDebugInfo::appendCompositingReasons(JSONObject* jsonObject) const
  96 {
  97     RefPtr<JSONArray> jsonArray = JSONArray::create();
  98     for (size_t i = 0; i < kNumberOfCompositingReasons; ++i) {
  99         if (!(m_compositingReasons & kCompositingReasonStringMap[i].reason))
 100             continue;
 101         jsonArray->pushString(kCompositingReasonStringMap[i].description);
 102     }
 103     jsonObject->setArray("compositing_reasons", jsonArray);
 104 }
 105
 106 void GraphicsLayerDebugInfo::appendDebugName(JSONObject* jsonObject) const
 107 {
 108     if (m_debugName.isEmpty())
 109         return;
 110
 111     jsonObject->setString("layer_name", m_debugName);
 112 }
 113
 114 void GraphicsLayerDebugInfo::appendOwnerNodeId(JSONObject* jsonObject) const
 115 {
 116     if (!m_ownerNodeId)
 117         return;
 118
 119     jsonObject->setNumber("owner_node", m_ownerNodeId);
 120 }
 121
 122 void GraphicsLayerDebugInfo::appendAnnotatedInvalidateRect(const FloatRect& rect, PaintInvalidationReason invalidationReason)
 123 {
 124     AnnotatedInvalidationRect annotatedRect = {
 125         rect,
 126         invalidationReason
 127     };
 128     m_invalidations.append(annotatedRect);
 129 }
 130
 131 void GraphicsLayerDebugInfo::clearAnnotatedInvalidateRects()
 132 {
 133     m_previousInvalidations.clear();
 134     m_previousInvalidations.swap(m_invalidations);
 135 }
 136
 137 } // namespace blink