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HexEditor: Clarify code for selecting byte colors

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Instead of assigning, then sometimes reassigning these colors, set them
once. This makes it easier to see how we prioritize the different
factors that affect the styling.

`highlight_flag` is now `selected` since it represents if the byte is
within the current selection.
This commit is contained in:
Sam Atkins 2023-12-31 20:55:47 +00:00 • committed by Sam Atkins
parent 8ae4464fa5
commit fb6a9dd2f5
1 changed files with 26 additions and 18 deletions
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44
Userland/Applications/HexEditor/HexEditor.cpp
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@ -634,10 +634,6 @@ void HexEditor::paint_event(GUI::PaintEvent& event)
auto const cell = m_document->get(byte_position);
bool const selection_inbetween_start_end = byte_position >= m_selection_start && byte_position < m_selection_end;
bool const selection_inbetween_end_start = byte_position >= m_selection_end && byte_position < m_selection_start;
bool const highlight_flag = selection_inbetween_start_end || selection_inbetween_end_start;
Gfx::IntRect hex_display_rect_high_nibble {
frame_thickness() + offset_margin_width() + j * cell_width() + 2 * m_padding,
frame_thickness() + m_padding + i * line_height(),
@ -663,27 +659,39 @@ void HexEditor::paint_event(GUI::PaintEvent& event)
auto high_nibble = line.substring_from_byte_offset(0, 1).release_value_but_fixme_should_propagate_errors();
auto low_nibble = line.substring_from_byte_offset(1).release_value_but_fixme_should_propagate_errors();
Gfx::Color background_color_hex = palette().color(background_role());
Gfx::Color background_color_text = background_color_hex;
Gfx::Color text_color_hex = [&]() -> Gfx::Color {
bool const selected = min(m_selection_start, m_selection_end) <= byte_position
&& byte_position < max(m_selection_start, m_selection_end);
// Styling priorities are as follows, with smaller numbers beating larger ones:
// 1. Modified bytes
// 2. The cursor position
// 3. The selection
// 4. Null bytes
// 5. Regular formatting
auto determine_background_color = [&](EditMode edit_mode) -> Gfx::Color {
if (selected)
return cell.modified ? palette().selection().inverted() : palette().selection();
if (byte_position == m_position && m_edit_mode != edit_mode)
return palette().inactive_selection();
return palette().color(background_role());
};
auto determine_text_color = [&](EditMode edit_mode) -> Gfx::Color {
if (cell.modified)
return Color::Red;
if (selected)
return palette().selection_text();
if (byte_position == m_position)
return (m_edit_mode == edit_mode) ? palette().color(foreground_role()) : palette().inactive_selection_text();
if (cell.value == 0x00)
return palette().color(ColorRole::PlaceholderText);
return palette().color(foreground_role());
}();
Gfx::Color text_color_text = text_color_hex;
};
Gfx::Color background_color_hex = determine_background_color(EditMode::Hex);
Gfx::Color background_color_text = determine_background_color(EditMode::Text);
Gfx::Color text_color_hex = determine_text_color(EditMode::Hex);
Gfx::Color text_color_text = determine_text_color(EditMode::Text);
auto& font = cell.modified ? this->font().bold_variant() : this->font();
if (highlight_flag) {
background_color_hex = background_color_text = cell.modified ? palette().selection().inverted() : palette().selection();
text_color_hex = text_color_text = cell.modified ? text_color_hex : palette().selection_text();
} else if (byte_position == m_position) {
background_color_hex = (m_edit_mode == EditMode::Hex) ? background_color_hex : palette().inactive_selection();
text_color_hex = (m_edit_mode == EditMode::Hex) ? text_color_text : palette().inactive_selection_text();
background_color_text = (m_edit_mode == EditMode::Text) ? background_color_text : palette().inactive_selection();
text_color_text = (m_edit_mode == EditMode::Text) ? text_color_text : palette().inactive_selection_text();
}
painter.fill_rect(background_rect, background_color_hex);
Gfx::IntRect text_display_rect {