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