mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-12-24 23:23:58 +00:00
LibLine: Support applying styles to suggestions
This commit also adds the concept of "anchored" styles, which are applied to a specific part of the line, and are tracked to always stay applied to that specific part. Inserting text in the middle of an anchored style extends it, and removing the styled substring causes the style to be removed as well.
This commit is contained in:
AnotherTest
Andreas Kling
parent
a0f3e3c50e
commit
88f542dc30
Notes:
sideshowbarker
2024-07-19 06:17:50 +09:00
Author: https://github.com/alimpfard Commit: https://github.com/SerenityOS/serenity/commit/88f542dc305 Pull-request: https://github.com/SerenityOS/serenity/pull/2269
3 changed files with 305 additions and 40 deletions
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@ -89,6 +89,8 @@ void Editor::insert(const u32 cp)
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auto str = builder.build();
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m_pending_chars.append(str.characters(), str.length());
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readjust_anchored_styles(m_cursor, ModificationKind::Insertion);
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if (m_cursor == m_buffer.size()) {
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m_buffer.append(cp);
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m_cursor = m_buffer.size();
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@ -126,6 +128,9 @@ static size_t codepoint_length_in_utf8(u32 codepoint)
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void Editor::stylize(const Span& span, const Style& style)
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{
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if (style.is_empty())
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return;
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auto start = span.beginning();
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auto end = span.end();
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@ -153,22 +158,25 @@ void Editor::stylize(const Span& span, const Style& style)
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end = end_codepoint_offset;
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}
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auto starting_map = m_spans_starting.get(start).value_or({});
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auto& spans_starting = style.is_anchored() ? m_anchored_spans_starting : m_spans_starting;
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auto& spans_ending = style.is_anchored() ? m_anchored_spans_ending : m_spans_ending;
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auto starting_map = spans_starting.get(start).value_or({});
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if (!starting_map.contains(end))
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m_refresh_needed = true;
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starting_map.set(end, style);
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m_spans_starting.set(start, starting_map);
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spans_starting.set(start, starting_map);
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auto ending_map = m_spans_ending.get(end).value_or({});
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auto ending_map = spans_ending.get(end).value_or({});
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if (!ending_map.contains(start))
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m_refresh_needed = true;
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ending_map.set(start, style);
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m_spans_ending.set(end, ending_map);
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spans_ending.set(end, ending_map);
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}
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String Editor::get_line(const String& prompt)
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@ -179,6 +187,7 @@ String Editor::get_line(const String& prompt)
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set_prompt(prompt);
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reset();
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set_origin();
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strip_styles(true);
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m_history_cursor = m_history.size();
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for (;;) {
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@ -396,7 +405,7 @@ String Editor::get_line(const String& prompt)
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fflush(stdout);
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continue;
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}
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m_buffer.remove(m_cursor);
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remove_at_index(m_cursor);
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m_refresh_needed = true;
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m_search_offset = 0;
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m_state = InputState::ExpectTerminator;
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@ -436,6 +445,8 @@ String Editor::get_line(const String& prompt)
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// reverse tab can count as regular tab here
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m_times_tab_pressed++;
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int token_start = m_cursor - 1 - m_last_shown_suggestion_display_length;
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// ask for completions only on the first tab
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// and scan for the largest common prefix to display
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// further tabs simply show the cached completions
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@ -506,12 +517,13 @@ String Editor::get_line(const String& prompt)
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}
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for (size_t i = m_next_suggestion_invariant_offset; i < shown_length; ++i)
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m_buffer.remove(actual_offset);
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remove_at_index(actual_offset);
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m_cursor = actual_offset;
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m_inline_search_cursor = m_cursor;
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m_refresh_needed = true;
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}
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m_last_shown_suggestion = m_suggestions[m_next_suggestion_index];
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m_last_shown_suggestion.token_start_index = token_start - m_next_suggestion_invariant_offset - m_last_shown_suggestion.trailing_trivia.length();
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m_last_shown_suggestion_display_length = m_last_shown_suggestion.text.length();
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m_last_shown_suggestion_was_complete = true;
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if (m_times_tab_pressed == 1) {
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@ -526,6 +538,7 @@ String Editor::get_line(const String& prompt)
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// add in the trivia of the last selected suggestion
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insert(m_last_shown_suggestion.trailing_trivia);
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m_last_shown_suggestion_display_length += m_last_shown_suggestion.trailing_trivia.length();
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stylize({ m_last_shown_suggestion.token_start_index, m_cursor, Span::Mode::CodepointOriented }, m_last_shown_suggestion.style);
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}
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} else {
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m_last_shown_suggestion_display_length = 0;
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@ -609,7 +622,7 @@ String Editor::get_line(const String& prompt)
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}
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if (m_last_shown_suggestion_was_complete && index == current_suggestion_index) {
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vt_apply_style({});
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vt_apply_style(Style::reset_style());
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fflush(stdout);
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}
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@ -645,6 +658,8 @@ String Editor::get_line(const String& prompt)
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}
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if (m_times_tab_pressed) {
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// Apply the style of the last suggestion
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stylize({ m_last_shown_suggestion.token_start_index, m_cursor, Span::Mode::CodepointOriented }, m_last_shown_suggestion.style);
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// we probably have some suggestions drawn
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// let's clean them up
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if (m_lines_used_for_last_suggestions) {
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@ -670,7 +685,7 @@ String Editor::get_line(const String& prompt)
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fflush(stdout);
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return;
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}
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m_buffer.remove(m_cursor - 1);
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remove_at_index(m_cursor - 1);
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--m_cursor;
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m_inline_search_cursor = m_cursor;
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// we will have to redraw :(
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@ -696,7 +711,7 @@ String Editor::get_line(const String& prompt)
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}
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if (codepoint == m_termios.c_cc[VKILL]) {
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for (size_t i = 0; i < m_cursor; ++i)
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m_buffer.remove(0);
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remove_at_index(0);
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m_cursor = 0;
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m_refresh_needed = true;
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continue;
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@ -972,19 +987,45 @@ void Editor::refresh_display()
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for (size_t i = 0; i < m_buffer.size(); ++i) {
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auto ends = m_spans_ending.get(i).value_or(empty_styles);
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auto starts = m_spans_starting.get(i).value_or(empty_styles);
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if (ends.size()) {
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auto anchored_ends = m_anchored_spans_ending.get(i).value_or(empty_styles);
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auto anchored_starts = m_anchored_spans_starting.get(i).value_or(empty_styles);
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if (ends.size() || anchored_ends.size()) {
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Style style;
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for (auto& applicable_style : ends)
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style.unify_with(applicable_style.value);
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for (auto& applicable_style : anchored_ends)
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style.unify_with(applicable_style.value);
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// Disable any style that should be turned off
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vt_apply_style(style, false);
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// go back to defaults
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vt_apply_style(find_applicable_style(i));
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style = find_applicable_style(i);
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vt_apply_style(style, true);
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}
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if (starts.size()) {
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if (starts.size() || anchored_starts.size()) {
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Style style;
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for (auto& applicable_style : starts)
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style.unify_with(applicable_style.value);
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for (auto& applicable_style : anchored_starts)
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style.unify_with(applicable_style.value);
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// set new options
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vt_apply_style(starts.begin()->value); // apply some random style that starts here
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vt_apply_style(style, true);
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}
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builder.clear();
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builder.append(Utf32View { &m_buffer[i], 1 });
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fputs(builder.to_string().characters(), stdout);
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}
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vt_apply_style({}); // don't bleed to EOL
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vt_apply_style(Style::reset_style()); // don't bleed to EOL
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m_pending_chars.clear();
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m_refresh_needed = false;
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m_cached_buffer_size = m_buffer.size();
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@ -997,6 +1038,19 @@ void Editor::refresh_display()
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fflush(stdout);
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}
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void Editor::strip_styles(bool strip_anchored)
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{
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m_spans_starting.clear();
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m_spans_ending.clear();
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if (strip_anchored) {
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m_anchored_spans_starting.clear();
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m_anchored_spans_ending.clear();
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}
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m_refresh_needed = true;
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}
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void Editor::reposition_cursor()
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{
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m_drawn_cursor = m_cursor;
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@ -1034,21 +1088,34 @@ void Editor::vt_move_relative(int x, int y)
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Style Editor::find_applicable_style(size_t offset) const
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{
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// walk through our styles and find one that fits in the offset
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for (auto& entry : m_spans_starting) {
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if (entry.key > offset)
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continue;
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// walk through our styles and merge all that fit in the offset
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Style style;
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auto unify = [&](auto& entry) {
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if (entry.key >= offset)
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return;
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for (auto& style_value : entry.value) {
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if (style_value.key <= offset)
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continue;
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return style_value.value;
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return;
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style.unify_with(style_value.value);
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}
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};
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for (auto& entry : m_spans_starting) {
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unify(entry);
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}
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return {};
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for (auto& entry : m_anchored_spans_starting) {
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unify(entry);
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}
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return style;
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}
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String Style::Background::to_vt_escape() const
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{
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if (is_default())
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return "";
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if (m_is_rgb) {
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return String::format("\033[48;2;%d;%d;%dm", m_rgb_color[0], m_rgb_color[1], m_rgb_color[2]);
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} else {
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@ -1058,6 +1125,9 @@ String Style::Background::to_vt_escape() const
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String Style::Foreground::to_vt_escape() const
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{
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if (is_default())
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return "";
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if (m_is_rgb) {
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return String::format("\033[38;2;%d;%d;%dm", m_rgb_color[0], m_rgb_color[1], m_rgb_color[2]);
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} else {
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@ -1065,15 +1135,94 @@ String Style::Foreground::to_vt_escape() const
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}
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}
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void Editor::vt_apply_style(const Style& style)
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String Style::Hyperlink::to_vt_escape(bool starting) const
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{
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printf(
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"\033[%d;%d;%dm%s%s",
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style.bold() ? 1 : 22,
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style.underline() ? 4 : 24,
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style.italic() ? 3 : 23,
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style.background().to_vt_escape().characters(),
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style.foreground().to_vt_escape().characters());
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if (is_empty())
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return "";
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return String::format("\033]8;;%s\033\\", starting ? m_link.characters() : "");
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}
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void Style::unify_with(const Style& other, bool prefer_other)
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{
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// unify colors
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if (prefer_other || m_background.is_default())
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m_background = other.background();
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if (prefer_other || m_foreground.is_default())
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m_foreground = other.foreground();
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// unify graphic renditions
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if (other.bold())
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set(Bold);
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if (other.italic())
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set(Italic);
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if (other.underline())
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set(Underline);
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// unify links
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if (prefer_other || m_hyperlink.is_empty())
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m_hyperlink = other.hyperlink();
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}
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String Style::to_string() const
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{
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StringBuilder builder;
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builder.append("Style { ");
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if (!m_foreground.is_default()) {
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builder.append("Foreground(");
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if (m_foreground.m_is_rgb) {
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builder.join(", ", m_foreground.m_rgb_color);
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} else {
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builder.appendf("(XtermColor) %d", m_foreground.m_xterm_color);
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}
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builder.append("), ");
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}
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if (!m_background.is_default()) {
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builder.append("Background(");
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if (m_background.m_is_rgb) {
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builder.join(' ', m_background.m_rgb_color);
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} else {
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builder.appendf("(XtermColor) %d", m_background.m_xterm_color);
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}
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builder.append("), ");
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}
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if (bold())
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builder.append("Bold, ");
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if (underline())
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builder.append("Underline, ");
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if (italic())
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builder.append("Italic, ");
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if (!m_hyperlink.is_empty())
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builder.appendf("Hyperlink(\"%s\"), ", m_hyperlink.m_link.characters());
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builder.append("}");
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return builder.build();
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}
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void Editor::vt_apply_style(const Style& style, bool is_starting)
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{
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if (is_starting) {
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printf(
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"\033[%d;%d;%dm%s%s%s",
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style.bold() ? 1 : 22,
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style.underline() ? 4 : 24,
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style.italic() ? 3 : 23,
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style.background().to_vt_escape().characters(),
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style.foreground().to_vt_escape().characters(),
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style.hyperlink().to_vt_escape(true).characters());
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} else {
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printf("%s", style.hyperlink().to_vt_escape(false).characters());
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}
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}
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void Editor::vt_clear_lines(size_t count_above, size_t count_below)
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@ -1250,4 +1399,49 @@ bool Editor::should_break_token(Vector<u32, 1024>& buffer, size_t index)
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return true;
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};
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void Editor::remove_at_index(size_t index)
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{
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// see if we have any anchored styles, and reposition them if needed
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readjust_anchored_styles(index, ModificationKind::Removal);
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m_buffer.remove(index);
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}
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void Editor::readjust_anchored_styles(size_t hint_index, ModificationKind modification)
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{
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struct Anchor {
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Span old_span;
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Span new_span;
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Style style;
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};
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Vector<Anchor> anchors_to_relocate;
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auto index_shift = modification == ModificationKind::Insertion ? 1 : -1;
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for (auto& start_entry : m_anchored_spans_starting) {
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for (auto& end_entry : start_entry.value) {
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if (start_entry.key >= hint_index) {
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if (start_entry.key == hint_index && end_entry.key == hint_index + 1 && modification == ModificationKind::Removal) {
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// remove the anchor, as all its text was wiped
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continue;
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}
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// shift everything
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anchors_to_relocate.append({ { start_entry.key, end_entry.key, Span::Mode::CodepointOriented }, { start_entry.key + index_shift, end_entry.key + index_shift, Span::Mode::CodepointOriented }, end_entry.value });
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continue;
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}
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if (end_entry.key > hint_index) {
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// shift just the end
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anchors_to_relocate.append({ { start_entry.key, end_entry.key, Span::Mode::CodepointOriented }, { start_entry.key, end_entry.key + index_shift, Span::Mode::CodepointOriented }, end_entry.value });
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continue;
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}
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anchors_to_relocate.append({ { start_entry.key, end_entry.key, Span::Mode::CodepointOriented }, { start_entry.key, end_entry.key, Span::Mode::CodepointOriented }, end_entry.value });
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}
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}
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m_anchored_spans_ending.clear();
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m_anchored_spans_starting.clear();
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// pass over the relocations and update the stale entries
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for (auto& relocation : anchors_to_relocate) {
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stylize(relocation.new_span, relocation.style);
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}
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}
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}
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@ -50,11 +50,19 @@ struct CompletionSuggestion {
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CompletionSuggestion(const String& completion)
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: text(completion)
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, trailing_trivia("")
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, style()
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{
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}
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CompletionSuggestion(const StringView& completion, const StringView& trailing_trivia)
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: text(completion)
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, trailing_trivia(trailing_trivia)
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, style()
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{
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}
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CompletionSuggestion(const StringView& completion, const StringView& trailing_trivia, Style style)
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: text(completion)
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, trailing_trivia(trailing_trivia)
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, style(style)
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{
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}
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@ -65,6 +73,8 @@ struct CompletionSuggestion {
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String text;
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String trailing_trivia;
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Style style;
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size_t token_start_index { 0 };
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};
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struct Configuration {
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@ -157,12 +167,8 @@ public:
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void insert(const String&);
|
||||
void insert(const u32);
|
||||
void stylize(const Span&, const Style&);
|
||||
void strip_styles()
|
||||
{
|
||||
m_spans_starting.clear();
|
||||
m_spans_ending.clear();
|
||||
m_refresh_needed = true;
|
||||
}
|
||||
void strip_styles(bool strip_anchored = false);
|
||||
|
||||
void suggest(size_t invariant_offset = 0, size_t index = 0) const
|
||||
{
|
||||
m_next_suggestion_index = index;
|
||||
|
|
@ -194,8 +200,15 @@ private:
|
|||
void vt_clear_lines(size_t count_above, size_t count_below = 0);
|
||||
void vt_move_relative(int x, int y);
|
||||
void vt_move_absolute(u32 x, u32 y);
|
||||
void vt_apply_style(const Style&);
|
||||
void vt_apply_style(const Style&, bool is_starting = true);
|
||||
Vector<size_t, 2> vt_dsr();
|
||||
void remove_at_index(size_t);
|
||||
|
||||
enum class ModificationKind {
|
||||
Insertion,
|
||||
Removal,
|
||||
};
|
||||
void readjust_anchored_styles(size_t hint_index, ModificationKind);
|
||||
|
||||
Style find_applicable_style(size_t offset) const;
|
||||
|
||||
|
|
@ -343,6 +356,9 @@ private:
|
|||
HashMap<u32, HashMap<u32, Style>> m_spans_starting;
|
||||
HashMap<u32, HashMap<u32, Style>> m_spans_ending;
|
||||
|
||||
HashMap<u32, HashMap<u32, Style>> m_anchored_spans_starting;
|
||||
HashMap<u32, HashMap<u32, Style>> m_anchored_spans_ending;
|
||||
|
||||
bool m_initialized { false };
|
||||
bool m_refresh_needed { false };
|
||||
|
||||
|
|
|
|||
|
|
@ -25,6 +25,7 @@
|
|||
*/
|
||||
|
||||
#pragma once
|
||||
#include <AK/String.h>
|
||||
#include <AK/Types.h>
|
||||
#include <AK/Vector.h>
|
||||
#include <stdlib.h>
|
||||
|
|
@ -43,8 +44,11 @@ public:
|
|||
Magenta,
|
||||
Cyan,
|
||||
White,
|
||||
Unchanged,
|
||||
};
|
||||
|
||||
struct AnchoredTag {
|
||||
};
|
||||
struct UnderlineTag {
|
||||
};
|
||||
struct BoldTag {
|
||||
|
|
@ -63,8 +67,13 @@ public:
|
|||
{
|
||||
}
|
||||
|
||||
XtermColor m_xterm_color { XtermColor::Default };
|
||||
Vector<u8, 3> m_rgb_color;
|
||||
bool is_default() const
|
||||
{
|
||||
return !m_is_rgb && m_xterm_color == XtermColor::Unchanged;
|
||||
}
|
||||
|
||||
XtermColor m_xterm_color { XtermColor::Unchanged };
|
||||
Vector<int, 3> m_rgb_color;
|
||||
bool m_is_rgb { false };
|
||||
};
|
||||
|
||||
|
|
@ -93,9 +102,27 @@ public:
|
|||
String to_vt_escape() const;
|
||||
};
|
||||
|
||||
struct Hyperlink {
|
||||
explicit Hyperlink(const StringView& link)
|
||||
: m_link(link)
|
||||
{
|
||||
m_has_link = true;
|
||||
}
|
||||
|
||||
Hyperlink() { }
|
||||
|
||||
String to_vt_escape(bool starting) const;
|
||||
|
||||
bool is_empty() const { return !m_has_link; }
|
||||
|
||||
String m_link;
|
||||
bool m_has_link { false };
|
||||
};
|
||||
|
||||
static constexpr UnderlineTag Underline {};
|
||||
static constexpr BoldTag Bold {};
|
||||
static constexpr ItalicTag Italic {};
|
||||
static constexpr AnchoredTag Anchored {};
|
||||
|
||||
// prepare for the horror of templates
|
||||
template<typename T, typename... Rest>
|
||||
|
|
@ -103,26 +130,54 @@ public:
|
|||
: Style(rest...)
|
||||
{
|
||||
set(style_arg);
|
||||
m_is_empty = false;
|
||||
}
|
||||
Style() { }
|
||||
|
||||
static Style reset_style()
|
||||
{
|
||||
return { Foreground(XtermColor::Default), Background(XtermColor::Default), Hyperlink("") };
|
||||
}
|
||||
|
||||
Style unified_with(const Style& other, bool prefer_other = true) const
|
||||
{
|
||||
Style style = *this;
|
||||
style.unify_with(other, prefer_other);
|
||||
return style;
|
||||
}
|
||||
|
||||
void unify_with(const Style&, bool prefer_other = false);
|
||||
|
||||
bool underline() const { return m_underline; }
|
||||
bool bold() const { return m_bold; }
|
||||
bool italic() const { return m_italic; }
|
||||
Background background() const { return m_background; }
|
||||
Foreground foreground() const { return m_foreground; }
|
||||
Hyperlink hyperlink() const { return m_hyperlink; }
|
||||
|
||||
void set(const ItalicTag&) { m_italic = true; }
|
||||
void set(const BoldTag&) { m_bold = true; }
|
||||
void set(const UnderlineTag&) { m_underline = true; }
|
||||
void set(const Background& bg) { m_background = bg; }
|
||||
void set(const Foreground& fg) { m_foreground = fg; }
|
||||
void set(const Hyperlink& link) { m_hyperlink = link; }
|
||||
void set(const AnchoredTag&) { m_is_anchored = true; }
|
||||
|
||||
bool is_anchored() const { return m_is_anchored; }
|
||||
bool is_empty() const { return m_is_empty; }
|
||||
|
||||
String to_string() const;
|
||||
|
||||
private:
|
||||
bool m_underline { false };
|
||||
bool m_bold { false };
|
||||
bool m_italic { false };
|
||||
Background m_background { XtermColor::Default };
|
||||
Foreground m_foreground { XtermColor::Default };
|
||||
Background m_background { XtermColor::Unchanged };
|
||||
Foreground m_foreground { XtermColor::Unchanged };
|
||||
Hyperlink m_hyperlink;
|
||||
|
||||
bool m_is_anchored { false };
|
||||
|
||||
bool m_is_empty { true };
|
||||
};
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue