ui/compositor/debug_utils.cc

   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/geometry/point.h"
  18 #include "ui/gfx/geometry/point_conversions.h"
  19 #include "ui/gfx/interpolated_transform.h"
  20 #include "ui/gfx/transform.h"
  21
  22 using base::UTF8ToWide;
  23
  24 namespace ui {
  25
  26 namespace {
  27
  28 void 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     case ui::LAYER_NINE_PATCH:
  59       *out << L" nine_patch";
  60       break;
  61   }
  62
  63   if (!layer->visible())
  64     *out << L" !visible";
  65
  66   std::string property_indent_str(indent+3, ' ');
  67   *out << L'\n' << UTF8ToWide(property_indent_str);
  68   *out << L"bounds: " << layer->bounds().x() << L',' << layer->bounds().y();
  69   *out << L' ' << layer->bounds().width() << L'x' << layer->bounds().height();
  70   if (!layer->subpixel_position_offset().IsZero())
  71     *out << " " << UTF8ToWide(layer->subpixel_position_offset().ToString());
  72
  73   const ui::Layer* mask = const_cast<ui::Layer*>(layer)->layer_mask_layer();
  74
  75   if (mask) {
  76     *out << L'\n' << UTF8ToWide(property_indent_str);
  77     *out << L"mask layer: " << std::setprecision(2)
  78          << UTF8ToWide(mask->bounds().ToString())
  79          << UTF8ToWide(mask->subpixel_position_offset().ToString());
  80   }
  81
  82   if (layer->opacity() != 1.0f) {
  83     *out << L'\n' << UTF8ToWide(property_indent_str);
  84     *out << L"opacity: " << std::setprecision(2) << layer->opacity();
  85   }
  86
  87   gfx::DecomposedTransform decomp;
  88   if (!layer->transform().IsIdentity() &&
  89       gfx::DecomposeTransform(&decomp, layer->transform())) {
  90     *out << L'\n' << UTF8ToWide(property_indent_str);
  91     *out << L"translation: " << std::fixed << decomp.translate[0];
  92     *out << L", " << decomp.translate[1];
  93
  94     *out << L'\n' << UTF8ToWide(property_indent_str);
  95     *out << L"rotation: ";
  96     *out << std::acos(decomp.quaternion[3]) * 360.0 / M_PI;
  97
  98     *out << L'\n' << UTF8ToWide(property_indent_str);
  99     *out << L"scale: " << decomp.scale[0];
 100     *out << L", " << decomp.scale[1];
 101   }
 102
 103   *out << L'\n';
 104
 105   for (size_t i = 0, count = layer->children().size(); i < count; ++i) {
 106     PrintLayerHierarchyImp(
 107         layer->children()[i], indent + 3, mouse_location, out);
 108   }
 109 }
 110
 111 }  // namespace
 112
 113 void PrintLayerHierarchy(const Layer* layer, gfx::Point mouse_location) {
 114   std::wostringstream out;
 115   out << L"Layer hierarchy:\n";
 116   PrintLayerHierarchyImp(layer, 0, mouse_location, &out);
 117   // Error so logs can be collected from end-users.
 118   LOG(ERROR) << out.str();
 119 }
 120
 121 }  // namespace ui