Home | History | Annotate | Download | only in compositor 
      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/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 
     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
    107