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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/compositor/debug_utils.h"
#include <stddef.h>
#include <iomanip>
#include <ostream>
#include <string>
#include "base/logging.h"
#include "base/numerics/math_constants.h"
#include "ui/compositor/layer.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/point_conversions.h"
#include "ui/gfx/interpolated_transform.h"
#include "ui/gfx/transform.h"
namespace ui {
namespace {
void PrintLayerHierarchyImp(const Layer* layer,
int indent,
gfx::Point mouse_location,
std::ostringstream* out) {
std::string indent_str(indent, ' ');
layer->transform().TransformPointReverse(&mouse_location);
bool mouse_inside_layer_bounds = layer->bounds().Contains(mouse_location);
mouse_location.Offset(-layer->bounds().x(), -layer->bounds().y());
*out << indent_str;
if (mouse_inside_layer_bounds)
*out << '*';
else
*out << ' ';
*out << layer->name() << ' ' << layer;
switch (layer->type()) {
case ui::LAYER_NOT_DRAWN:
*out << " not_drawn";
break;
case ui::LAYER_TEXTURED:
*out << " textured";
if (layer->fills_bounds_opaquely())
*out << " opaque";
break;
case ui::LAYER_SOLID_COLOR:
*out << " solid";
break;
case ui::LAYER_NINE_PATCH:
*out << " nine_patch";
break;
}
if (!layer->visible())
*out << " !visible";
std::string property_indent_str(indent+3, ' ');
*out << '\n' << property_indent_str;
*out << "bounds: " << layer->bounds().x() << ',' << layer->bounds().y();
*out << ' ' << layer->bounds().width() << 'x' << layer->bounds().height();
if (!layer->GetSubpixelOffset().IsZero())
*out << " " << layer->GetSubpixelOffset().ToString();
const cc::Layer* cc_layer = layer->cc_layer_for_testing();
if (cc_layer) {
// Property trees must be updated in order to get valid render surface
// reasons.
if (cc_layer->layer_tree_host() &&
!cc_layer->layer_tree_host()->property_trees()->needs_rebuild) {
cc::RenderSurfaceReason render_surface =
cc_layer->GetRenderSurfaceReason();
if (render_surface != cc::RenderSurfaceReason::kNone) {
*out << " render-surface-reason: "
<< cc::RenderSurfaceReasonToString(render_surface);
}
}
}
const ui::Layer* mask = const_cast<ui::Layer*>(layer)->layer_mask_layer();
if (mask) {
*out << '\n' << property_indent_str;
*out << "mask layer: " << std::setprecision(2) << mask->bounds().ToString()
<< mask->GetSubpixelOffset().ToString();
}
if (layer->opacity() != 1.0f) {
*out << '\n' << property_indent_str;
*out << "opacity: " << std::setprecision(2) << layer->opacity();
}
gfx::DecomposedTransform decomp;
if (!layer->transform().IsIdentity() &&
gfx::DecomposeTransform(&decomp, layer->transform())) {
*out << '\n' << property_indent_str;
*out << "translation: " << std::fixed << decomp.translate[0];
*out << ", " << decomp.translate[1];
*out << '\n' << property_indent_str;
*out << "rotation: ";
*out << std::acos(decomp.quaternion.w()) * 360.0 / base::kPiDouble;
*out << '\n' << property_indent_str;
*out << "scale: " << decomp.scale[0];
*out << ", " << decomp.scale[1];
}
*out << '\n';
for (size_t i = 0, count = layer->children().size(); i < count; ++i) {
PrintLayerHierarchyImp(
layer->children()[i], indent + 3, mouse_location, out);
}
}
} // namespace
void PrintLayerHierarchy(const Layer* layer, const gfx::Point& mouse_location) {
std::ostringstream out;
PrintLayerHierarchy(layer, mouse_location, &out);
// Error so logs can be collected from end-users.
LOG(ERROR) << out.str();
}
void PrintLayerHierarchy(const Layer* layer,
const gfx::Point& mouse_location,
std::ostringstream* out) {
*out << "Layer hierarchy:\n";
PrintLayerHierarchyImp(layer, 0, mouse_location, out);
}
} // namespace ui
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