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e76cf3e225
This reduces the recompilation cascade when Document.h is modified. Add explicit includes to files that relied on the transitive dependency.
105 lines
4.5 KiB
C++
105 lines
4.5 KiB
C++
/*
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* Copyright (c) 2025, Jonathan Gamble <gamblej@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/CSS/CSSStyleProperties.h>
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#include <LibWeb/CSS/PropertyID.h>
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#include <LibWeb/DOM/Element.h>
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#include <LibWeb/Page/ElementResizeAction.h>
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#include <LibWeb/Painting/ChromeMetrics.h>
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#include <LibWeb/Painting/PaintableBox.h>
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// https://drafts.csswg.org/css-ui#resize
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namespace Web {
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static Optional<CSSPixelSize> containing_block_padding_box_size(Layout::Node const& layout_node)
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{
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auto parent_box = layout_node.containing_block();
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if (!parent_box)
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return {};
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if (auto const* paintable_box = as_if<Painting::PaintableBox>(parent_box->first_paintable()))
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return paintable_box->absolute_padding_box_rect().size();
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return {};
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}
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ElementResizeAction::ElementResizeAction(GC::Ref<DOM::Element> element, CSSPixelPoint pointer_down_origin)
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: m_element(element)
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, m_pointer_down_origin(pointer_down_origin)
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{
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auto const* paintable_box = m_element->paintable_box();
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if (paintable_box)
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m_initial_border_box_size = paintable_box->absolute_border_box_rect().size();
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}
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void ElementResizeAction::handle_pointer_move(CSSPixelPoint pointer_position)
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{
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auto const* paintable_box = m_element->paintable_box();
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if (!paintable_box)
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return;
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auto const& layout_node = paintable_box->layout_node();
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auto const& computed = layout_node.computed_values();
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auto resize = computed.resize();
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if (resize == CSS::Resize::None)
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return;
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bool horizontal_writing_mode = computed.writing_mode() == CSS::WritingMode::HorizontalTb;
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bool resize_x = computed.resize() == CSS::Resize::Both
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|| computed.resize() == CSS::Resize::Horizontal
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|| (computed.resize() == CSS::Resize::Inline && horizontal_writing_mode)
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|| (computed.resize() == CSS::Resize::Block && !horizontal_writing_mode);
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bool resize_y = computed.resize() == CSS::Resize::Both
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|| computed.resize() == CSS::Resize::Vertical
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|| (computed.resize() == CSS::Resize::Inline && !horizontal_writing_mode)
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|| (computed.resize() == CSS::Resize::Block && horizontal_writing_mode);
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CSSPixels dx = resize_x ? pointer_position.x() - m_pointer_down_origin.x() : 0;
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CSSPixels dy = resize_y ? pointer_position.y() - m_pointer_down_origin.y() : 0;
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auto writing_mode = computed.writing_mode();
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if ((writing_mode == CSS::WritingMode::HorizontalTb && computed.direction() == CSS::Direction::Rtl)
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|| writing_mode == CSS::WritingMode::VerticalRl
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|| writing_mode == CSS::WritingMode::SidewaysRl) {
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dx = -dx;
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}
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CSSPixels css_width = max(ChromeMetrics::ZOOM_INVARIANT_RESIZE_GRIPPER_SIZE, m_initial_border_box_size.width() + dx);
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CSSPixels css_height = max(ChromeMetrics::ZOOM_INVARIANT_RESIZE_GRIPPER_SIZE, m_initial_border_box_size.height() + dy);
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auto reference_basis = containing_block_padding_box_size(layout_node);
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if (reference_basis.has_value()) {
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if (auto const& min_width = computed.min_width(); !min_width.is_auto()) {
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css_width = max(css_width, min_width.to_px(layout_node, reference_basis->width()));
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}
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if (auto const& max_width = computed.max_width(); !max_width.is_none()) {
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css_width = min(css_width, max_width.to_px(layout_node, reference_basis->width()));
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}
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if (auto const& min_height = computed.min_height(); !min_height.is_auto()) {
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css_height = max(css_height, min_height.to_px(layout_node, reference_basis->height()));
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}
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if (auto const& max_height = computed.max_height(); !max_height.is_none()) {
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css_height = min(css_height, max_height.to_px(layout_node, reference_basis->height()));
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}
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}
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if (computed.box_sizing() == CSS::BoxSizing::ContentBox) {
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auto const& metrics = paintable_box->box_model();
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css_width -= metrics.padding.left + metrics.padding.right + computed.border_left().width + computed.border_right().width;
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css_height -= metrics.padding.top + metrics.padding.bottom + computed.border_top().width + computed.border_bottom().width;
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}
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auto style = m_element->style_for_bindings();
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auto width_str = MUST(String::formatted("{:.2f}px", max(0.0, css_width.to_double())));
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auto height_str = MUST(String::formatted("{:.2f}px", max(0.0, css_height.to_double())));
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MUST(style->set_property(CSS::PropertyID::Width, width_str));
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MUST(style->set_property(CSS::PropertyID::Height, height_str));
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}
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void ElementResizeAction::visit_edges(GC::Cell::Visitor& visitor) const
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{
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visitor.visit(m_element);
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}
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}
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