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LibWeb: Make sure CSS::ComputedValues has initial size values

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Instead of using Optional<LengthPercentage>, we now use LengthPercentage
for these values. The initial values are all `auto`.

This avoids having to check `has_value()` in a ton of places.
This commit is contained in:
Andreas Kling 2022-07-07 12:36:02 +02:00
parent 734ff422ad
commit cefc931347
9 changed files with 81 additions and 86 deletions
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40
Userland/Libraries/LibWeb/Layout/FormattingContext.cpp
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@ -180,10 +180,10 @@ static Gfx::FloatSize solve_replaced_size_constraint(FormattingState const& stat
auto width_of_containing_block = CSS::Length::make_px(containing_block_state.content_width);
auto height_of_containing_block = CSS::Length::make_px(containing_block_state.content_height);
auto specified_min_width = box.computed_values().min_width().has_value() ? box.computed_values().min_width()->resolved(box, width_of_containing_block).to_px(box) : 0;
auto specified_max_width = box.computed_values().max_width().has_value() ? box.computed_values().max_width()->resolved(box, width_of_containing_block).to_px(box) : w;
auto specified_min_height = box.computed_values().min_height().has_value() ? box.computed_values().min_height()->resolved(box, height_of_containing_block).to_px(box) : 0;
auto specified_max_height = box.computed_values().max_height().has_value() ? box.computed_values().max_height()->resolved(box, height_of_containing_block).to_px(box) : h;
auto specified_min_width = box.computed_values().min_width().is_auto() ? 0 : box.computed_values().min_width().resolved(box, width_of_containing_block).to_px(box);
auto specified_max_width = box.computed_values().max_width().is_auto() ? w : box.computed_values().max_width().resolved(box, width_of_containing_block).to_px(box);
auto specified_min_height = box.computed_values().min_height().is_auto() ? 0 : box.computed_values().min_height().resolved(box, height_of_containing_block).to_px(box);
auto specified_max_height = box.computed_values().max_height().is_auto() ? h : box.computed_values().max_height().resolved(box, height_of_containing_block).to_px(box);
auto min_width = min(specified_min_width, specified_max_width);
auto max_width = max(specified_min_width, specified_max_width);
@ -329,7 +329,7 @@ float FormattingContext::tentative_width_for_replaced_element(FormattingState co
{
auto const& containing_block = *box.containing_block();
auto height_of_containing_block = CSS::Length::make_px(state.get(containing_block).content_height);
auto computed_height = box.computed_values().height().has_value() ? box.computed_values().height()->resolved(box, height_of_containing_block).resolved(box) : CSS::Length::make_auto();
auto computed_height = box.computed_values().height().resolved(box, height_of_containing_block).resolved(box);
float used_width = computed_width.to_px(box);
@ -400,14 +400,14 @@ float FormattingContext::compute_width_for_replaced_element(FormattingState cons
if (margin_right.is_auto())
margin_right = zero_value;
auto specified_width = box.computed_values().width().has_value() ? box.computed_values().width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
auto specified_width = box.computed_values().width().resolved(box, width_of_containing_block).resolved(box);
// 1. The tentative used width is calculated (without 'min-width' and 'max-width')
auto used_width = tentative_width_for_replaced_element(state, box, specified_width);
// 2. The tentative used width is greater than 'max-width', the rules above are applied again,
// but this time using the computed value of 'max-width' as the computed value for 'width'.
auto specified_max_width = box.computed_values().max_width().has_value() ? box.computed_values().max_width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
auto specified_max_width = box.computed_values().max_width().resolved(box, width_of_containing_block).resolved(box);
if (!specified_max_width.is_auto()) {
if (used_width > specified_max_width.to_px(box)) {
used_width = tentative_width_for_replaced_element(state, box, specified_max_width);
@ -416,7 +416,7 @@ float FormattingContext::compute_width_for_replaced_element(FormattingState cons
// 3. If the resulting width is smaller than 'min-width', the rules above are applied again,
// but this time using the value of 'min-width' as the computed value for 'width'.
auto specified_min_width = box.computed_values().min_width().has_value() ? box.computed_values().min_width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
auto specified_min_width = box.computed_values().min_width().resolved(box, width_of_containing_block).resolved(box);
if (!specified_min_width.is_auto()) {
if (used_width < specified_min_width.to_px(box)) {
used_width = tentative_width_for_replaced_element(state, box, specified_min_width);
@ -432,7 +432,7 @@ float FormattingContext::tentative_height_for_replaced_element(FormattingState c
{
auto const& containing_block = *box.containing_block();
auto width_of_containing_block = CSS::Length::make_px(state.get(containing_block).content_width);
auto computed_width = box.computed_values().width().has_value() ? box.computed_values().width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
auto computed_width = box.computed_values().width().resolved(box, width_of_containing_block).resolved(box);
// If 'height' and 'width' both have computed values of 'auto' and the element also has
// an intrinsic height, then that intrinsic height is the used value of 'height'.
@ -467,8 +467,8 @@ float FormattingContext::compute_height_for_replaced_element(FormattingState con
auto const& containing_block_state = state.get(containing_block);
auto width_of_containing_block = CSS::Length::make_px(containing_block_state.content_width);
auto height_of_containing_block = CSS::Length::make_px(containing_block_state.content_height);
auto specified_width = box.computed_values().width().has_value() ? box.computed_values().width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
auto specified_height = box.computed_values().height().has_value() ? box.computed_values().height()->resolved(box, height_of_containing_block).resolved(box) : CSS::Length::make_auto();
auto specified_width = box.computed_values().width().resolved(box, width_of_containing_block).resolved(box);
auto specified_height = box.computed_values().height().resolved(box, height_of_containing_block).resolved(box);
float used_height = tentative_height_for_replaced_element(state, box, specified_height);
@ -591,14 +591,14 @@ void FormattingContext::compute_width_for_absolutely_positioned_non_replaced_ele
return width;
};
auto specified_width = computed_values.width().has_value() ? computed_values.width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
auto specified_width = computed_values.width().resolved(box, width_of_containing_block).resolved(box);
// 1. The tentative used width is calculated (without 'min-width' and 'max-width')
auto used_width = try_compute_width(specified_width);
// 2. The tentative used width is greater than 'max-width', the rules above are applied again,
// but this time using the computed value of 'max-width' as the computed value for 'width'.
auto specified_max_width = computed_values.max_width().has_value() ? computed_values.max_width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
auto specified_max_width = computed_values.max_width().resolved(box, width_of_containing_block).resolved(box);
if (!specified_max_width.is_auto()) {
if (used_width.to_px(box) > specified_max_width.to_px(box)) {
used_width = try_compute_width(specified_max_width);
@ -607,7 +607,7 @@ void FormattingContext::compute_width_for_absolutely_positioned_non_replaced_ele
// 3. If the resulting width is smaller than 'min-width', the rules above are applied again,
// but this time using the value of 'min-width' as the computed value for 'width'.
auto specified_min_width = computed_values.min_width().has_value() ? computed_values.min_width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
auto specified_min_width = computed_values.min_width().resolved(box, width_of_containing_block).resolved(box);
if (!specified_min_width.is_auto()) {
if (used_width.to_px(box) < specified_min_width.to_px(box)) {
used_width = try_compute_width(specified_min_width);
@ -650,15 +650,15 @@ void FormattingContext::compute_height_for_absolutely_positioned_non_replaced_el
CSS::Length specified_bottom = computed_values.inset().bottom.resolved(box, height_of_containing_block).resolved(box);
CSS::Length specified_height = CSS::Length::make_auto();
if (computed_values.height().has_value() && computed_values.height()->is_percentage()
&& !(containing_block.computed_values().height().has_value() && containing_block.computed_values().height()->is_length() && containing_block.computed_values().height()->length().is_absolute())) {
if (computed_values.height().is_percentage()
&& !(containing_block.computed_values().height().is_length() && containing_block.computed_values().height().length().is_absolute())) {
// specified_height is already auto
} else {
specified_height = computed_values.height().has_value() ? computed_values.height()->resolved(box, height_of_containing_block).resolved(box) : CSS::Length::make_auto();
specified_height = computed_values.height().resolved(box, height_of_containing_block).resolved(box);
}
auto specified_max_height = computed_values.max_height().has_value() ? computed_values.max_height()->resolved(box, height_of_containing_block).resolved(box) : CSS::Length::make_auto();
auto specified_min_height = computed_values.min_height().has_value() ? computed_values.min_height()->resolved(box, height_of_containing_block).resolved(box) : CSS::Length::make_auto();
auto specified_max_height = computed_values.max_height().resolved(box, height_of_containing_block).resolved(box);
auto specified_min_height = computed_values.min_height().resolved(box, height_of_containing_block).resolved(box);
box_state.margin_top = computed_values.margin().top.resolved(box, width_of_containing_block).to_px(box);
box_state.margin_bottom = computed_values.margin().bottom.resolved(box, width_of_containing_block).to_px(box);
@ -697,7 +697,7 @@ void FormattingContext::layout_absolutely_positioned_element(Box const& box)
auto height_of_containing_block = CSS::Length::make_px(containing_block_state.content_height);
auto& box_state = m_state.get_mutable(box);
auto specified_width = box.computed_values().width().has_value() ? box.computed_values().width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
auto specified_width = box.computed_values().width().resolved(box, width_of_containing_block).resolved(box);
compute_width_for_absolutely_positioned_element(box);
auto independent_formatting_context = layout_inside(box, LayoutMode::Normal);