summaryrefslogtreecommitdiffstats
path: root/layout/base/nsLayoutDebugger.cpp
blob: 1cca582ec533350180b05f4ee0292439f6877c00 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */

/* some layout debugging functions that ought to live in nsFrame.cpp */

#include "nsAttrValue.h"
#include "nsIFrame.h"
#include "nsDisplayList.h"
#include "nsPrintfCString.h"

#include <stdio.h>

using namespace mozilla;
using namespace mozilla::layers;

static std::ostream& operator<<(std::ostream& os, const nsPrintfCString& rhs) {
  os << rhs.get();
  return os;
}

static void PrintDisplayListTo(nsDisplayListBuilder* aBuilder,
                               const nsDisplayList& aList,
                               std::stringstream& aStream, uint32_t aIndent,
                               bool aDumpHtml);

static void PrintDisplayItemTo(nsDisplayListBuilder* aBuilder,
                               nsDisplayItem* aItem, std::stringstream& aStream,
                               uint32_t aIndent, bool aDumpSublist,
                               bool aDumpHtml) {
  std::stringstream ss;

  if (!aDumpHtml) {
    for (uint32_t indent = 0; indent < aIndent; indent++) {
      aStream << "  ";
    }
  }
  nsAutoString contentData;
  nsIFrame* f = aItem->Frame();
#ifdef DEBUG_FRAME_DUMP
  f->GetFrameName(contentData);
#endif
  nsIContent* content = f->GetContent();
  if (content) {
    nsString tmp;
    if (content->GetID()) {
      content->GetID()->ToString(tmp);
      contentData.AppendLiteral(" id:");
      contentData.Append(tmp);
    }
    const nsAttrValue* classes =
        content->IsElement() ? content->AsElement()->GetClasses() : nullptr;
    if (classes) {
      classes->ToString(tmp);
      contentData.AppendLiteral(" class:");
      contentData.Append(tmp);
    }
  }
  bool snap;
  nsRect rect = aBuilder ? aItem->GetBounds(aBuilder, &snap) : nsRect();
  nsRect component =
      aBuilder ? aItem->GetComponentAlphaBounds(aBuilder) : nsRect();
  nsDisplayList* list = aItem->GetChildren();
  const DisplayItemClip& clip = aItem->GetClip();
  nsRegion opaque =
      aBuilder ? aItem->GetOpaqueRegion(aBuilder, &snap) : nsRect();

#ifdef MOZ_DUMP_PAINTING
  if (aDumpHtml && aItem->Painted()) {
    nsCString string(aItem->Name());
    string.Append('-');
    string.AppendInt((uint64_t)aItem);
    aStream << nsPrintfCString("<a href=\"javascript:ViewImage('%s')\">",
                               string.BeginReading());
  }
#endif

  aStream << nsPrintfCString(
      "%s p=0x%p f=0x%p(%s) key=%d %sbounds(%d,%d,%d,%d) "
      "componentAlpha(%d,%d,%d,%d) clip(%s) asr(%s) clipChain(%s)%s ",
      aItem->Name(), aItem, (void*)f, NS_ConvertUTF16toUTF8(contentData).get(),
      aItem->GetPerFrameKey(),
      (aItem->ZIndex() ? nsPrintfCString("z=%d ", aItem->ZIndex()).get() : ""),
      rect.x, rect.y, rect.width, rect.height, component.x, component.y,
      component.width, component.height, clip.ToString().get(),
      ActiveScrolledRoot::ToString(aItem->GetActiveScrolledRoot()).get(),
      DisplayItemClipChain::ToString(aItem->GetClipChain()).get(),
      (aBuilder && aItem->IsUniform(aBuilder)) ? " uniform" : "");

  for (auto iter = opaque.RectIter(); !iter.Done(); iter.Next()) {
    const nsRect& r = iter.Get();
    aStream << nsPrintfCString(" (opaque %d,%d,%d,%d)", r.x, r.y, r.width,
                               r.height);
  }

  const auto& willChange = aItem->Frame()->StyleDisplay()->mWillChange;
  if (!willChange.features.IsEmpty()) {
    aStream << " (will-change=";
    for (size_t i = 0; i < willChange.features.Length(); i++) {
      if (i > 0) {
        aStream << ",";
      }
      nsDependentAtomString buffer(willChange.features.AsSpan()[i].AsAtom());
      aStream << NS_LossyConvertUTF16toASCII(buffer).get();
    }
    aStream << ")";
  }

  if (aItem->HasHitTestInfo()) {
    const auto& hitTestInfo = aItem->GetHitTestInfo();
    aStream << nsPrintfCString(" hitTestInfo(0x%x)",
                               hitTestInfo.Info().serialize());

    nsRect area = hitTestInfo.Area();
    aStream << nsPrintfCString(" hitTestArea(%d,%d,%d,%d)", area.x, area.y,
                               area.width, area.height);
  }

  auto ReuseStateToString = [](nsDisplayItem::ReuseState aState) {
    switch (aState) {
      case nsDisplayItem::ReuseState::None:
        return "None";
      case nsDisplayItem::ReuseState::Reusable:
        return "Reusable";
      case nsDisplayItem::ReuseState::PreProcessed:
        return "PreProcessed";
      case nsDisplayItem::ReuseState::Reused:
        return "Reused";
    }

    MOZ_ASSERT_UNREACHABLE();
    return "";
  };

  aStream << nsPrintfCString(" reuse-state(%s)",
                             ReuseStateToString(aItem->GetReuseState()));

  // Display item specific debug info
  aItem->WriteDebugInfo(aStream);

#ifdef MOZ_DUMP_PAINTING
  if (aDumpHtml && aItem->Painted()) {
    aStream << "</a>";
  }
#endif
#ifdef MOZ_DUMP_PAINTING
  if (aItem->GetType() == DisplayItemType::TYPE_MASK) {
    nsCString str;
    (static_cast<nsDisplayMasksAndClipPaths*>(aItem))->PrintEffects(str);
    aStream << str.get();
  }

  if (aItem->GetType() == DisplayItemType::TYPE_FILTER) {
    nsCString str;
    (static_cast<nsDisplayFilters*>(aItem))->PrintEffects(str);
    aStream << str.get();
  }
#endif
  aStream << "\n";
#ifdef MOZ_DUMP_PAINTING
  if (aDumpHtml && aItem->Painted()) {
    nsCString string(aItem->Name());
    string.Append('-');
    string.AppendInt((uint64_t)aItem);
    aStream << nsPrintfCString("<br><img id=\"%s\">\n", string.BeginReading());
  }
#endif

  if (aDumpSublist && list) {
    PrintDisplayListTo(aBuilder, *list, aStream, aIndent + 1, aDumpHtml);
  }
}

static void PrintDisplayListTo(nsDisplayListBuilder* aBuilder,
                               const nsDisplayList& aList,
                               std::stringstream& aStream, uint32_t aIndent,
                               bool aDumpHtml) {
  if (aDumpHtml) {
    aStream << "<ul>";
  }

  for (nsDisplayItem* i : aList) {
    if (aDumpHtml) {
      aStream << "<li>";
    }
    PrintDisplayItemTo(aBuilder, i, aStream, aIndent, true, aDumpHtml);
    if (aDumpHtml) {
      aStream << "</li>";
    }
  }

  if (aDumpHtml) {
    aStream << "</ul>";
  }
}

void nsIFrame::PrintDisplayList(nsDisplayListBuilder* aBuilder,
                                const nsDisplayList& aList, bool aDumpHtml) {
  std::stringstream ss;
  PrintDisplayList(aBuilder, aList, ss, aDumpHtml);
  fprintf_stderr(stderr, "%s", ss.str().c_str());
}

void nsIFrame::PrintDisplayList(nsDisplayListBuilder* aBuilder,
                                const nsDisplayList& aList,
                                std::stringstream& aStream, bool aDumpHtml) {
  PrintDisplayListTo(aBuilder, aList, aStream, 0, aDumpHtml);
}

void nsIFrame::PrintDisplayItem(nsDisplayListBuilder* aBuilder,
                                nsDisplayItem* aItem,
                                std::stringstream& aStream, uint32_t aIndent,
                                bool aDumpSublist, bool aDumpHtml) {
  PrintDisplayItemTo(aBuilder, aItem, aStream, aIndent, aDumpSublist,
                     aDumpHtml);
}

/**
 * The two functions below are intended to be called from a debugger.
 */
void PrintDisplayItemToStdout(nsDisplayListBuilder* aBuilder,
                              nsDisplayItem* aItem) {
  std::stringstream stream;
  PrintDisplayItemTo(aBuilder, aItem, stream, 0, true, false);
  puts(stream.str().c_str());
}

void PrintDisplayListToStdout(nsDisplayListBuilder* aBuilder,
                              const nsDisplayList& aList) {
  std::stringstream stream;
  PrintDisplayListTo(aBuilder, aList, stream, 0, false);
  puts(stream.str().c_str());
}

#ifdef MOZ_DUMP_PAINTING
static void PrintDisplayListSetItem(nsDisplayListBuilder* aBuilder,
                                    const char* aItemName,
                                    const nsDisplayList& aList,
                                    std::stringstream& aStream,
                                    bool aDumpHtml) {
  if (aDumpHtml) {
    aStream << "<li>";
  }
  aStream << aItemName << "\n";
  PrintDisplayListTo(aBuilder, aList, aStream, 0, aDumpHtml);
  if (aDumpHtml) {
    aStream << "</li>";
  }
}

void nsIFrame::PrintDisplayListSet(nsDisplayListBuilder* aBuilder,
                                   const nsDisplayListSet& aSet,
                                   std::stringstream& aStream, bool aDumpHtml) {
  if (aDumpHtml) {
    aStream << "<ul>";
  }
  PrintDisplayListSetItem(aBuilder, "[BorderBackground]",
                          *(aSet.BorderBackground()), aStream, aDumpHtml);
  PrintDisplayListSetItem(aBuilder, "[BlockBorderBackgrounds]",
                          *(aSet.BlockBorderBackgrounds()), aStream, aDumpHtml);
  PrintDisplayListSetItem(aBuilder, "[Floats]", *(aSet.Floats()), aStream,
                          aDumpHtml);
  PrintDisplayListSetItem(aBuilder, "[PositionedDescendants]",
                          *(aSet.PositionedDescendants()), aStream, aDumpHtml);
  PrintDisplayListSetItem(aBuilder, "[Outlines]", *(aSet.Outlines()), aStream,
                          aDumpHtml);
  PrintDisplayListSetItem(aBuilder, "[Content]", *(aSet.Content()), aStream,
                          aDumpHtml);
  if (aDumpHtml) {
    aStream << "</ul>";
  }
}

#endif