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LibWeb: Replace to_px() with to_px_or_zero() in InlineFormattingContext

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to_px() usage should be avoided because it might leak saturated
(infinite) values into layout calculations.
This commit is contained in:
Aliaksandr Kalenik 2023-08-12 18:30:18 +02:00 • committed by Andreas Kling
parent 4646867a9f
commit fce4801460
7 changed files with 29 additions and 21 deletions
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32
Userland/Libraries/LibWeb/Layout/InlineFormattingContext.cpp
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@ -53,10 +53,14 @@ CSSPixels InlineFormattingContext::leftmost_x_offset_at(CSSPixels y) const
return left_side_floats_limit_to_right - max(CSSPixels(0), box_in_root_rect.x());
}
CSSPixels InlineFormattingContext::available_space_for_line(CSSPixels y) const
AvailableSize InlineFormattingContext::available_space_for_line(CSSPixels y) const
{
auto intrusions = parent().intrusion_by_floats_into_box(containing_block(), y);
return m_available_space->width.to_px() - (intrusions.left + intrusions.right);
if (m_available_space->width.is_definite()) {
return AvailableSize::make_definite(m_available_space->width.to_px_or_zero() - (intrusions.left + intrusions.right));
} else {
return m_available_space->width;
}
}
CSSPixels InlineFormattingContext::automatic_content_width() const
@ -130,15 +134,19 @@ void InlineFormattingContext::dimension_box_on_line(Box const& box, LayoutMode l
if (should_treat_width_as_auto(box, *m_available_space)) {
auto result = calculate_shrink_to_fit_widths(box);
auto available_width = m_available_space->width.to_px()
- box_state.margin_left
- box_state.border_left
- box_state.padding_left
- box_state.padding_right
- box_state.border_right
- box_state.margin_right;
if (m_available_space->width.is_definite()) {
auto available_width = m_available_space->width.to_px_or_zero()
- box_state.margin_left
- box_state.border_left
- box_state.padding_left
- box_state.padding_right
- box_state.border_right
- box_state.margin_right;
unconstrained_width = min(max(result.preferred_minimum_width, available_width), result.preferred_width);
unconstrained_width = min(max(result.preferred_minimum_width, available_width), result.preferred_width);
} else {
unconstrained_width = result.preferred_width;
}
} else {
if (width_value.contains_percentage() && !m_available_space->width.is_definite()) {
// NOTE: We can't resolve percentages yet. We'll have to wait until after inner layout.
@ -195,7 +203,7 @@ void InlineFormattingContext::apply_justification_to_fragments(CSS::TextJustify
if (is_last_line || line_box.m_has_forced_break)
return;
CSSPixels excess_horizontal_space = line_box.original_available_width() - line_box.width();
CSSPixels excess_horizontal_space = line_box.original_available_width().to_px_or_zero() - line_box.width();
CSSPixels excess_horizontal_space_including_whitespace = excess_horizontal_space;
size_t whitespace_count = 0;
for (auto& fragment : line_box.fragments()) {
@ -343,7 +351,7 @@ bool InlineFormattingContext::can_fit_new_line_at_y(CSSPixels y) const
};
auto right_edge = [this](auto& space) -> CSSPixels {
return m_available_space->width.to_px() - space.right;
return m_available_space->width.to_px_or_zero() - space.right;
};
auto top_left_edge = left_edge(top_intrusions);