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// Copyright 2012 The Chromium Authors
// 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 <optional>
#include <ostream>
#include <string>
#include "base/logging.h"
#include "base/numerics/angle_conversions.h"
#include "cc/trees/layer_tree_host.h"
#include "ui/compositor/layer.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/point_conversions.h"
#include "ui/gfx/geometry/transform.h"
#include "ui/gfx/interpolated_transform.h"
namespace ui {
namespace {
void PrintLayerHierarchyImp(const Layer* layer,
int indent,
const gfx::Point& mouse_location,
bool print_invisible,
std::ostringstream* out,
DebugLayerChildCallback child_cb) {
if (!print_invisible && !layer->visible()) {
return;
}
std::string indent_str(indent, ' ');
gfx::Point transformed_mouse_location = layer->transform()
.InverseMapPoint(mouse_location)
.value_or(mouse_location);
const bool mouse_inside_layer_bounds =
layer->bounds().Contains(transformed_mouse_location);
const gfx::Point mouse_location_in_layer =
transformed_mouse_location - layer->bounds().origin().OffsetFromOrigin();
*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";
break;
case ui::LAYER_SOLID_COLOR:
*out << " solid";
break;
case ui::LAYER_NINE_PATCH:
*out << " nine_patch";
break;
}
if (layer->fills_bounds_opaquely()) {
*out << " opaque";
}
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 auto clip_rect = layer->clip_rect();
if (!clip_rect.IsEmpty()) {
*out << " clip_rect:" << clip_rect.ToString();
}
if (!layer->rounded_corner_radii().IsEmpty()) {
*out << "\n" << property_indent_str;
*out << "rounded-corners-radii: "
<< layer->rounded_corner_radii().ToString();
}
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();
}
if (!layer->transform().IsIdentity()) {
if (std::optional<gfx::DecomposedTransform> decomp =
layer->transform().Decompose()) {
*out << '\n' << property_indent_str;
*out << "translation: " << std::fixed << decomp->translate[0];
*out << ", " << decomp->translate[1];
*out << '\n' << property_indent_str;
*out << "rotation: ";
*out << base::RadToDeg(std::acos(decomp->quaternion.w()) * 2);
*out << '\n' << property_indent_str;
*out << "scale: " << decomp->scale[0];
*out << ", " << decomp->scale[1];
}
}
*out << '\n';
std::vector<raw_ptr<ui::Layer, VectorExperimental>> children =
child_cb ? child_cb.Run(layer) : layer->children();
for (ui::Layer* child : children) {
PrintLayerHierarchyImp(child, indent + 3, mouse_location_in_layer,
print_invisible, out, child_cb);
}
}
} // namespace
void PrintLayerHierarchy(const Layer* layer,
const gfx::Point& mouse_location,
bool print_invisible) {
std::ostringstream out;
PrintLayerHierarchy(layer, mouse_location, print_invisible, &out);
// Error so logs can be collected from end-users.
LOG(ERROR) << out.str();
}
void PrintLayerHierarchy(const Layer* layer,
const gfx::Point& mouse_location,
bool print_invisible,
std::ostringstream* out,
DebugLayerChildCallback child_cb) {
*out << "Layer hierarchy:\n";
PrintLayerHierarchyImp(layer, 0, mouse_location, print_invisible, out,
child_cb);
}
} // namespace ui
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