debug_utils.cc revision cedac228d2dd51db4b79ea1e72c7f249408ee061 
1// Copyright (c) 2012 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#define _USE_MATH_DEFINES // For VC++ to get M_PI. This has to be first.
6
7#include "ui/compositor/debug_utils.h"
8
9#include <cmath>
10#include <iomanip>
11#include <ostream>
12#include <string>
13
14#include "base/logging.h"
15#include "base/strings/utf_string_conversions.h"
16#include "ui/compositor/layer.h"
17#include "ui/gfx/interpolated_transform.h"
18#include "ui/gfx/point.h"
19#include "ui/gfx/point_conversions.h"
20#include "ui/gfx/transform.h"
21
22using base::UTF8ToWide;
23
24namespace ui {
25
26namespace {
27
28void PrintLayerHierarchyImp(const Layer* layer,
29                            int indent,
30                            gfx::Point mouse_location,
31                            std::wostringstream* out) {
32  std::string indent_str(indent, ' ');
33
34  layer->transform().TransformPointReverse(&mouse_location);
35  bool mouse_inside_layer_bounds = layer->bounds().Contains(mouse_location);
36  mouse_location.Offset(-layer->bounds().x(), -layer->bounds().y());
37
38  *out << UTF8ToWide(indent_str);
39  if (mouse_inside_layer_bounds)
40    *out << L'*';
41  else
42    *out << L' ';
43
44  *out << UTF8ToWide(layer->name()) << L' ' << layer;
45
46  switch (layer->type()) {
47    case ui::LAYER_NOT_DRAWN:
48      *out << L" not_drawn";
49      break;
50    case ui::LAYER_TEXTURED:
51      *out << L" textured";
52      if (layer->fills_bounds_opaquely())
53        *out << L" opaque";
54      break;
55    case ui::LAYER_SOLID_COLOR:
56      *out << L" solid";
57      break;
58  }
59
60  if (!layer->visible())
61    *out << L" !visible";
62
63  std::string property_indent_str(indent+3, ' ');
64  *out << L'\n' << UTF8ToWide(property_indent_str);
65  *out << L"bounds: " << layer->bounds().x() << L',' << layer->bounds().y();
66  *out << L' ' << layer->bounds().width() << L'x' << layer->bounds().height();
67
68  if (layer->opacity() != 1.0f) {
69    *out << L'\n' << UTF8ToWide(property_indent_str);
70    *out << L"opacity: " << std::setprecision(2) << layer->opacity();
71  }
72
73  gfx::DecomposedTransform decomp;
74  if (!layer->transform().IsIdentity() &&
75      gfx::DecomposeTransform(&decomp, layer->transform())) {
76    *out << L'\n' << UTF8ToWide(property_indent_str);
77    *out << L"translation: " << std::fixed << decomp.translate[0];
78    *out << L", " << decomp.translate[1];
79
80    *out << L'\n' << UTF8ToWide(property_indent_str);
81    *out << L"rotation: ";
82    *out << std::acos(decomp.quaternion[3]) * 360.0 / M_PI;
83
84    *out << L'\n' << UTF8ToWide(property_indent_str);
85    *out << L"scale: " << decomp.scale[0];
86    *out << L", " << decomp.scale[1];
87  }
88
89  *out << L'\n';
90
91  for (size_t i = 0, count = layer->children().size(); i < count; ++i) {
92    PrintLayerHierarchyImp(
93        layer->children()[i], indent + 3, mouse_location, out);
94  }
95}
96
97}  // namespace
98
99void PrintLayerHierarchy(const Layer* layer, gfx::Point mouse_location) {
100  std::wostringstream out;
101  out << L"Layer hierarchy:\n";
102  PrintLayerHierarchyImp(layer, 0, mouse_location, &out);
103  // Error so logs can be collected from end-users.
104  LOG(ERROR) << out.str();
105}
106
107}  // namespace ui
108