mirror of
https://github.com/RGBCube/serenity
synced 2025-05-16 05:04:58 +00:00
656b01eb0f
The box tree and line boxes now all store a relative offset from their containing block, instead of an absolute (document-relative) position. This removes a huge pain point from the layout system which was having to adjust offsets recursively when something moved. It also makes some layout logic significantly simpler. Every box can still find its absolute position by walking its chain of containing blocks and accumulating the translation from the root. This is currently what we do both for rendering and hit testing.
280 lines
11 KiB
C++
280 lines
11 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/StringBuilder.h>
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#include <AK/Utf8View.h>
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#include <LibWeb/CSS/PropertyID.h>
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#include <LibWeb/CSS/StyleSheet.h>
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#include <LibWeb/DOM/Comment.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/DocumentFragment.h>
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#include <LibWeb/DOM/DocumentType.h>
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#include <LibWeb/DOM/Element.h>
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#include <LibWeb/DOM/Text.h>
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#include <LibWeb/Dump.h>
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#include <LibWeb/Layout/LayoutBlock.h>
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#include <LibWeb/Layout/LayoutNode.h>
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#include <LibWeb/Layout/LayoutText.h>
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#include <stdio.h>
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namespace Web {
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void dump_tree(const Node& node)
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{
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static int indent = 0;
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for (int i = 0; i < indent; ++i)
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dbgprintf(" ");
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if (is<Document>(node)) {
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dbgprintf("*Document*\n");
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} else if (is<Element>(node)) {
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dbgprintf("<%s", to<Element>(node).tag_name().characters());
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to<Element>(node).for_each_attribute([](auto& name, auto& value) {
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dbgprintf(" %s=%s", name.characters(), value.characters());
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});
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dbgprintf(">\n");
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} else if (is<Text>(node)) {
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dbgprintf("\"%s\"\n", static_cast<const Text&>(node).data().characters());
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} else if (is<DocumentType>(node)) {
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dbgprintf("<!DOCTYPE html>\n");
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} else if (is<Comment>(node)) {
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dbgprintf("<!--%s-->\n", to<Comment>(node).data().characters());
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} else if (is<DocumentFragment>(node)) {
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dbgprintf("#document-fragment\n");
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}
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++indent;
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if (is<ParentNode>(node)) {
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static_cast<const ParentNode&>(node).for_each_child([](auto& child) {
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dump_tree(child);
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});
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}
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--indent;
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}
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void dump_tree(const LayoutNode& layout_node)
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{
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static size_t indent = 0;
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for (size_t i = 0; i < indent; ++i)
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dbgprintf(" ");
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FlyString tag_name;
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if (layout_node.is_anonymous())
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tag_name = "(anonymous)";
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else if (is<Text>(layout_node.node()))
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tag_name = "#text";
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else if (is<Document>(layout_node.node()))
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tag_name = "#document";
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else if (is<Element>(layout_node.node()))
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tag_name = to<Element>(*layout_node.node()).tag_name();
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else
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tag_name = "???";
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String identifier = "";
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if (layout_node.node() && is<Element>(*layout_node.node())) {
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auto id = to<Element>(*layout_node.node()).attribute(HTML::AttributeNames::id);
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if (!id.is_empty()) {
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StringBuilder builder;
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builder.append('#');
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builder.append(id);
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identifier = builder.to_string();
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}
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}
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if (!layout_node.is_box()) {
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dbgprintf("%s {\033[33m%s\033[0m%s}\n", layout_node.class_name(), tag_name.characters(), identifier.characters());
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} else {
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auto& layout_box = to<LayoutBox>(layout_node);
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dbgprintf("%s {\033[34m%s\033[0m%s} at (%g,%g) size %gx%g",
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layout_box.class_name(),
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tag_name.characters(),
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identifier.characters(),
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layout_box.absolute_x(),
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layout_box.absolute_y(),
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layout_box.width(),
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layout_box.height());
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// Dump the horizontal box properties
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dbgprintf(" [%g+%g+%g %g %g+%g+%g]",
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layout_box.box_model().margin().left.to_px(layout_box),
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layout_box.box_model().border().left.to_px(layout_box),
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layout_box.box_model().padding().left.to_px(layout_box),
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layout_box.width(),
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layout_box.box_model().padding().right.to_px(layout_box),
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layout_box.box_model().border().right.to_px(layout_box),
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layout_box.box_model().margin().right.to_px(layout_box));
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// And the vertical box properties
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dbgprintf(" [%g+%g+%g %g %g+%g+%g]",
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layout_box.box_model().margin().top.to_px(layout_box),
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layout_box.box_model().border().top.to_px(layout_box),
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layout_box.box_model().padding().top.to_px(layout_box),
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layout_box.height(),
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layout_box.box_model().padding().bottom.to_px(layout_box),
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layout_box.box_model().border().bottom.to_px(layout_box),
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layout_box.box_model().margin().bottom.to_px(layout_box));
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dbgprintf("\n");
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}
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if (layout_node.is_block() && static_cast<const LayoutBlock&>(layout_node).children_are_inline()) {
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auto& block = static_cast<const LayoutBlock&>(layout_node);
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for (size_t i = 0; i < indent; ++i)
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dbgprintf(" ");
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dbgprintf(" Line boxes (%d):\n", block.line_boxes().size());
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for (size_t line_box_index = 0; line_box_index < block.line_boxes().size(); ++line_box_index) {
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auto& line_box = block.line_boxes()[line_box_index];
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for (size_t i = 0; i < indent; ++i)
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dbgprintf(" ");
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dbgprintf(" [%d] width: %g\n", line_box_index, line_box.width());
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for (size_t fragment_index = 0; fragment_index < line_box.fragments().size(); ++fragment_index) {
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auto& fragment = line_box.fragments()[fragment_index];
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for (size_t i = 0; i < indent; ++i)
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dbgprintf(" ");
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dbgprintf(" [%d] layout_node: %s{%p}, start: %d, length: %d, rect: %s\n",
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fragment_index,
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fragment.layout_node().class_name(),
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&fragment.layout_node(),
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fragment.start(),
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fragment.length(),
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fragment.absolute_rect().to_string().characters());
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if (fragment.layout_node().is_text()) {
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for (size_t i = 0; i < indent; ++i)
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dbgprintf(" ");
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auto& layout_text = static_cast<const LayoutText&>(fragment.layout_node());
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auto fragment_text = layout_text.text_for_rendering().substring(fragment.start(), fragment.length());
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dbgprintf(" text: \"%s\"\n", fragment_text.characters());
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}
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}
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}
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}
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layout_node.style().for_each_property([&](auto property_id, auto& value) {
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for (size_t i = 0; i < indent; ++i)
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dbgprintf(" ");
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dbgprintf(" (%s: %s)\n", CSS::string_from_property_id(property_id), value.to_string().characters());
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});
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++indent;
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layout_node.for_each_child([](auto& child) {
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dump_tree(child);
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});
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--indent;
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}
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void dump_selector(const Selector& selector)
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{
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dbgprintf(" Selector:\n");
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for (auto& complex_selector : selector.complex_selectors()) {
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dbgprintf(" ");
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const char* relation_description = "";
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switch (complex_selector.relation) {
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case Selector::ComplexSelector::Relation::None:
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relation_description = "None";
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break;
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case Selector::ComplexSelector::Relation::ImmediateChild:
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relation_description = "ImmediateChild";
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break;
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case Selector::ComplexSelector::Relation::Descendant:
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relation_description = "Descendant";
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break;
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case Selector::ComplexSelector::Relation::AdjacentSibling:
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relation_description = "AdjacentSibling";
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break;
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case Selector::ComplexSelector::Relation::GeneralSibling:
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relation_description = "GeneralSibling";
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break;
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}
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if (*relation_description)
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dbgprintf("{%s} ", relation_description);
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for (size_t i = 0; i < complex_selector.compound_selector.size(); ++i) {
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auto& simple_selector = complex_selector.compound_selector[i];
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const char* type_description = "Unknown";
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switch (simple_selector.type) {
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case Selector::SimpleSelector::Type::Invalid:
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type_description = "Invalid";
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break;
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case Selector::SimpleSelector::Type::Universal:
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type_description = "Universal";
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break;
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case Selector::SimpleSelector::Type::Id:
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type_description = "Id";
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break;
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case Selector::SimpleSelector::Type::Class:
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type_description = "Class";
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break;
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case Selector::SimpleSelector::Type::TagName:
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type_description = "TagName";
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break;
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}
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const char* attribute_match_type_description = "";
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switch (simple_selector.attribute_match_type) {
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case Selector::SimpleSelector::AttributeMatchType::None:
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break;
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case Selector::SimpleSelector::AttributeMatchType::HasAttribute:
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attribute_match_type_description = "HasAttribute";
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break;
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case Selector::SimpleSelector::AttributeMatchType::ExactValueMatch:
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attribute_match_type_description = "ExactValueMatch";
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break;
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}
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dbgprintf("%s:%s", type_description, simple_selector.value.characters());
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if (simple_selector.attribute_match_type != Selector::SimpleSelector::AttributeMatchType::None) {
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dbgprintf(" [%s, name='%s', value='%s']", attribute_match_type_description, simple_selector.attribute_name.characters(), simple_selector.attribute_value.characters());
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}
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if (i != complex_selector.compound_selector.size() - 1)
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dbgprintf(", ");
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}
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dbgprintf("\n");
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}
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}
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void dump_rule(const StyleRule& rule)
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{
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dbgprintf("Rule:\n");
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for (auto& selector : rule.selectors()) {
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dump_selector(selector);
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}
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dbgprintf(" Declarations:\n");
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for (auto& property : rule.declaration().properties()) {
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dbgprintf(" %s: '%s'\n", CSS::string_from_property_id(property.property_id), property.value->to_string().characters());
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}
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}
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void dump_sheet(const StyleSheet& sheet)
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{
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dbgprintf("StyleSheet{%p}: %d rule(s)\n", &sheet, sheet.rules().size());
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for (auto& rule : sheet.rules()) {
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dump_rule(rule);
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}
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}
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}
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