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ladybird/Libraries/LibWeb/Dump.cpp

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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/StringBuilder.h>
#include <AK/Utf8View.h>
#include <LibWeb/CSS/PropertyID.h>
#include <LibWeb/CSS/StyleSheet.h>
#include <LibWeb/DOM/Comment.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/DocumentFragment.h>
#include <LibWeb/DOM/DocumentType.h>
#include <LibWeb/DOM/Element.h>
#include <LibWeb/DOM/Text.h>
#include <LibWeb/Dump.h>
#include <LibWeb/Layout/LayoutBlock.h>
#include <LibWeb/Layout/LayoutNode.h>
#include <LibWeb/Layout/LayoutText.h>
#include <stdio.h>
namespace Web {
void dump_tree(const Node& node)
{
static int indent = 0;
for (int i = 0; i < indent; ++i)
dbgprintf(" ");
if (is<Document>(node)) {
dbgprintf("*Document*\n");
} else if (is<Element>(node)) {
dbgprintf("<%s", to<Element>(node).tag_name().characters());
to<Element>(node).for_each_attribute([](auto& name, auto& value) {
dbgprintf(" %s=%s", name.characters(), value.characters());
});
dbgprintf(">\n");
} else if (is<Text>(node)) {
dbgprintf("\"%s\"\n", static_cast<const Text&>(node).data().characters());
} else if (is<DocumentType>(node)) {
dbgprintf("<!DOCTYPE html>\n");
} else if (is<Comment>(node)) {
dbgprintf("<!--%s-->\n", to<Comment>(node).data().characters());
} else if (is<DocumentFragment>(node)) {
dbgprintf("#document-fragment\n");
}
++indent;
if (is<ParentNode>(node)) {
static_cast<const ParentNode&>(node).for_each_child([](auto& child) {
dump_tree(child);
});
}
--indent;
}
void dump_tree(const LayoutNode& layout_node)
{
static size_t indent = 0;
for (size_t i = 0; i < indent; ++i)
dbgprintf(" ");
FlyString tag_name;
if (layout_node.is_anonymous())
tag_name = "(anonymous)";
else if (is<Text>(layout_node.node()))
tag_name = "#text";
else if (is<Document>(layout_node.node()))
tag_name = "#document";
else if (is<Element>(layout_node.node()))
tag_name = to<Element>(*layout_node.node()).tag_name();
else
tag_name = "???";
String identifier = "";
if (layout_node.node() && is<Element>(*layout_node.node())) {
auto id = to<Element>(*layout_node.node()).attribute(HTML::AttributeNames::id);
if (!id.is_empty()) {
StringBuilder builder;
builder.append('#');
builder.append(id);
identifier = builder.to_string();
}
}
if (!layout_node.is_box()) {
dbgprintf("%s {\033[33m%s\033[0m%s}\n", layout_node.class_name(), tag_name.characters(), identifier.characters());
} else {
auto& layout_box = to<LayoutBox>(layout_node);
dbgprintf("%s {\033[34m%s\033[0m%s} at (%g,%g) size %gx%g",
layout_box.class_name(),
tag_name.characters(),
identifier.characters(),
layout_box.absolute_x(),
layout_box.absolute_y(),
layout_box.width(),
layout_box.height());
// Dump the horizontal box properties
dbgprintf(" [%g+%g+%g %g %g+%g+%g]",
layout_box.box_model().margin().left.to_px(layout_box),
layout_box.box_model().border().left.to_px(layout_box),
layout_box.box_model().padding().left.to_px(layout_box),
layout_box.width(),
layout_box.box_model().padding().right.to_px(layout_box),
layout_box.box_model().border().right.to_px(layout_box),
layout_box.box_model().margin().right.to_px(layout_box));
// And the vertical box properties
dbgprintf(" [%g+%g+%g %g %g+%g+%g]",
layout_box.box_model().margin().top.to_px(layout_box),
layout_box.box_model().border().top.to_px(layout_box),
layout_box.box_model().padding().top.to_px(layout_box),
layout_box.height(),
layout_box.box_model().padding().bottom.to_px(layout_box),
layout_box.box_model().border().bottom.to_px(layout_box),
layout_box.box_model().margin().bottom.to_px(layout_box));
dbgprintf("\n");
}
if (layout_node.is_block() && static_cast<const LayoutBlock&>(layout_node).children_are_inline()) {
auto& block = static_cast<const LayoutBlock&>(layout_node);
for (size_t i = 0; i < indent; ++i)
dbgprintf(" ");
dbgprintf(" Line boxes (%d):\n", block.line_boxes().size());
for (size_t line_box_index = 0; line_box_index < block.line_boxes().size(); ++line_box_index) {
auto& line_box = block.line_boxes()[line_box_index];
for (size_t i = 0; i < indent; ++i)
dbgprintf(" ");
dbgprintf(" [%d] width: %g\n", line_box_index, line_box.width());
for (size_t fragment_index = 0; fragment_index < line_box.fragments().size(); ++fragment_index) {
auto& fragment = line_box.fragments()[fragment_index];
for (size_t i = 0; i < indent; ++i)
dbgprintf(" ");
dbgprintf(" [%d] layout_node: %s{%p}, start: %d, length: %d, rect: %s\n",
fragment_index,
fragment.layout_node().class_name(),
&fragment.layout_node(),
fragment.start(),
fragment.length(),
fragment.absolute_rect().to_string().characters());
if (fragment.layout_node().is_text()) {
for (size_t i = 0; i < indent; ++i)
dbgprintf(" ");
auto& layout_text = static_cast<const LayoutText&>(fragment.layout_node());
auto fragment_text = layout_text.text_for_rendering().substring(fragment.start(), fragment.length());
dbgprintf(" text: \"%s\"\n", fragment_text.characters());
}
}
}
}
layout_node.style().for_each_property([&](auto property_id, auto& value) {
for (size_t i = 0; i < indent; ++i)
dbgprintf(" ");
dbgprintf(" (%s: %s)\n", CSS::string_from_property_id(property_id), value.to_string().characters());
});
++indent;
layout_node.for_each_child([](auto& child) {
dump_tree(child);
});
--indent;
}
void dump_selector(const Selector& selector)
{
dbgprintf(" Selector:\n");
for (auto& complex_selector : selector.complex_selectors()) {
dbgprintf(" ");
const char* relation_description = "";
switch (complex_selector.relation) {
case Selector::ComplexSelector::Relation::None:
relation_description = "None";
break;
case Selector::ComplexSelector::Relation::ImmediateChild:
relation_description = "ImmediateChild";
break;
case Selector::ComplexSelector::Relation::Descendant:
relation_description = "Descendant";
break;
case Selector::ComplexSelector::Relation::AdjacentSibling:
relation_description = "AdjacentSibling";
break;
case Selector::ComplexSelector::Relation::GeneralSibling:
relation_description = "GeneralSibling";
break;
}
if (*relation_description)
dbgprintf("{%s} ", relation_description);
for (size_t i = 0; i < complex_selector.compound_selector.size(); ++i) {
auto& simple_selector = complex_selector.compound_selector[i];
const char* type_description = "Unknown";
switch (simple_selector.type) {
case Selector::SimpleSelector::Type::Invalid:
type_description = "Invalid";
break;
case Selector::SimpleSelector::Type::Universal:
type_description = "Universal";
break;
case Selector::SimpleSelector::Type::Id:
type_description = "Id";
break;
case Selector::SimpleSelector::Type::Class:
type_description = "Class";
break;
case Selector::SimpleSelector::Type::TagName:
type_description = "TagName";
break;
}
const char* attribute_match_type_description = "";
switch (simple_selector.attribute_match_type) {
case Selector::SimpleSelector::AttributeMatchType::None:
break;
case Selector::SimpleSelector::AttributeMatchType::HasAttribute:
attribute_match_type_description = "HasAttribute";
break;
case Selector::SimpleSelector::AttributeMatchType::ExactValueMatch:
attribute_match_type_description = "ExactValueMatch";
break;
case Selector::SimpleSelector::AttributeMatchType::Contains:
attribute_match_type_description = "Contains";
break;
}
dbgprintf("%s:%s", type_description, simple_selector.value.characters());
if (simple_selector.attribute_match_type != Selector::SimpleSelector::AttributeMatchType::None) {
dbgprintf(" [%s, name='%s', value='%s']", attribute_match_type_description, simple_selector.attribute_name.characters(), simple_selector.attribute_value.characters());
}
if (i != complex_selector.compound_selector.size() - 1)
dbgprintf(", ");
}
dbgprintf("\n");
}
}
void dump_rule(const StyleRule& rule)
{
dbgprintf("Rule:\n");
for (auto& selector : rule.selectors()) {
dump_selector(selector);
}
dbgprintf(" Declarations:\n");
for (auto& property : rule.declaration().properties()) {
dbgprintf(" %s: '%s'\n", CSS::string_from_property_id(property.property_id), property.value->to_string().characters());
}
}
void dump_sheet(const StyleSheet& sheet)
{
dbgprintf("StyleSheet{%p}: %d rule(s)\n", &sheet, sheet.rules().size());
for (auto& rule : sheet.rules()) {
dump_rule(rule);
}
}
}
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