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LibWeb: Add CSSPixels::nearest_value_for(FloatingPoint)

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This is intended to annotate conversions from unknown floating-point
values to CSSPixels, and make it more obvious the fp value will be
rounded to the nearest fixed-point value.
This commit is contained in:
MacDue 2023-08-26 15:57:31 +01:00 • committed by Alexander Kalenik
parent 360c0eb509
commit 71baa8c31a
28 changed files with 120 additions and 112 deletions
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16
Userland/Libraries/LibWeb/Layout/LineBoxFragment.cpp
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@ -51,7 +51,7 @@ int LineBoxFragment::text_index_at(CSSPixels x) const
Utf8View view(text());
CSSPixels relative_x = x - absolute_x();
CSSPixels glyph_spacing = CSSPixels(font.glyph_spacing());
CSSPixels glyph_spacing = font.glyph_spacing();
if (relative_x < 0)
return 0;
@ -59,7 +59,7 @@ int LineBoxFragment::text_index_at(CSSPixels x) const
CSSPixels width_so_far = 0;
for (auto it = view.begin(); it != view.end(); ++it) {
auto previous_it = it;
CSSPixels glyph_width = CSSPixels(font.glyph_or_emoji_width(it));
CSSPixels glyph_width = CSSPixels::nearest_value_for(font.glyph_or_emoji_width(it));
if ((width_so_far + glyph_width + glyph_spacing / 2) > relative_x)
return m_start + view.byte_offset_of(previous_it);
@ -105,8 +105,8 @@ CSSPixelRect LineBoxFragment::selection_rect(Gfx::Font const& font) const
auto selection_start_in_this_fragment = max(0, range->start_offset() - m_start);
auto selection_end_in_this_fragment = min(m_length, range->end_offset() - m_start);
auto pixel_distance_to_first_selected_character = CSSPixels(font.width(text.substring_view(0, selection_start_in_this_fragment)));
auto pixel_width_of_selection = CSSPixels(font.width(text.substring_view(selection_start_in_this_fragment, selection_end_in_this_fragment - selection_start_in_this_fragment))) + 1;
auto pixel_distance_to_first_selected_character = CSSPixels::nearest_value_for(font.width(text.substring_view(0, selection_start_in_this_fragment)));
auto pixel_width_of_selection = CSSPixels::nearest_value_for(font.width(text.substring_view(selection_start_in_this_fragment, selection_end_in_this_fragment - selection_start_in_this_fragment))) + 1;
auto rect = absolute_rect();
rect.set_x(rect.x() + pixel_distance_to_first_selected_character);
@ -121,8 +121,8 @@ CSSPixelRect LineBoxFragment::selection_rect(Gfx::Font const& font) const
auto selection_start_in_this_fragment = max(0, range->start_offset() - m_start);
auto selection_end_in_this_fragment = m_length;
auto pixel_distance_to_first_selected_character = CSSPixels(font.width(text.substring_view(0, selection_start_in_this_fragment)));
auto pixel_width_of_selection = CSSPixels(font.width(text.substring_view(selection_start_in_this_fragment, selection_end_in_this_fragment - selection_start_in_this_fragment))) + 1;
auto pixel_distance_to_first_selected_character = CSSPixels::nearest_value_for(font.width(text.substring_view(0, selection_start_in_this_fragment)));
auto pixel_width_of_selection = CSSPixels::nearest_value_for(font.width(text.substring_view(selection_start_in_this_fragment, selection_end_in_this_fragment - selection_start_in_this_fragment))) + 1;
auto rect = absolute_rect();
rect.set_x(rect.x() + pixel_distance_to_first_selected_character);
@ -137,8 +137,8 @@ CSSPixelRect LineBoxFragment::selection_rect(Gfx::Font const& font) const
auto selection_start_in_this_fragment = 0;
auto selection_end_in_this_fragment = min(range->end_offset() - m_start, m_length);
auto pixel_distance_to_first_selected_character = CSSPixels(font.width(text.substring_view(0, selection_start_in_this_fragment)));
auto pixel_width_of_selection = CSSPixels(font.width(text.substring_view(selection_start_in_this_fragment, selection_end_in_this_fragment - selection_start_in_this_fragment))) + 1;
auto pixel_distance_to_first_selected_character = CSSPixels::nearest_value_for(font.width(text.substring_view(0, selection_start_in_this_fragment)));
auto pixel_width_of_selection = CSSPixels::nearest_value_for(font.width(text.substring_view(selection_start_in_this_fragment, selection_end_in_this_fragment - selection_start_in_this_fragment))) + 1;
auto rect = absolute_rect();
rect.set_x(rect.x() + pixel_distance_to_first_selected_character);