init, basic glogg clone
This commit is contained in:
241
src/ui/log_view.rs
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241
src/ui/log_view.rs
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use eframe::egui;
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use crate::file_tab::FileTab;
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use crate::types::HighlightRule;
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pub struct LogViewContext<'a> {
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pub tab: &'a mut FileTab,
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pub highlight_rules: &'a [HighlightRule],
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pub show_all: bool,
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}
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pub fn render_log_view(ui: &mut egui::Ui, ctx: LogViewContext) {
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let LogViewContext {
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tab,
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highlight_rules,
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show_all,
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} = ctx;
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let total_lines = if show_all {
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tab.line_index.total_lines
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} else {
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tab.filtered_lines.len()
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};
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if total_lines == 0 {
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ui.centered_and_justified(|ui| {
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if show_all {
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ui.label("Click 'Open File' to load a log file");
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} else {
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ui.label("No matching lines");
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}
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});
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return;
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}
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let line_height = ui.text_style_height(&egui::TextStyle::Monospace);
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// Account for: frame inner margins (2.0 vertical) + horizontal layout spacing + frame outer spacing
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// The actual rendered height is approximately line_height + 6.0
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let row_height = line_height + 2.0;
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let scroll_id_str = if show_all {
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"main_view_scroll"
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} else {
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"filtered_view_scroll"
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};
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let scroll_id = egui::Id::new(scroll_id_str);
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// Only handle scroll-to-line and page-scroll for the main view
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if show_all {
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handle_scroll_to_line(ui, &scroll_id, tab, row_height);
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handle_page_scroll(ui, &scroll_id, tab, row_height, total_lines);
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}
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let mut scroll_area = egui::ScrollArea::both()
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.auto_shrink([false; 2])
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.id_salt(scroll_id);
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if show_all && tab.force_scroll {
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scroll_area = scroll_area.vertical_scroll_offset(tab.desired_scroll_offset);
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tab.force_scroll = false;
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}
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let scroll_output = scroll_area.show_rows(ui, row_height, total_lines, |ui, row_range| {
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render_visible_lines(ui, tab, highlight_rules, show_all, row_range);
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});
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// Update the scroll offset from the actual scroll state
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if show_all {
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let actual_offset = scroll_output.state.offset.y;
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// eprintln!("Actual scroll offset after render: {}", actual_offset);
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if (actual_offset - tab.desired_scroll_offset).abs() > 1.0 {
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eprintln!(
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"SYNC: Updating desired_scroll_offset from {} to {}",
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tab.desired_scroll_offset, actual_offset
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);
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}
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tab.desired_scroll_offset = actual_offset;
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}
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}
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fn handle_scroll_to_line(
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_ui: &mut egui::Ui,
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_scroll_id: &egui::Id,
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tab: &mut FileTab,
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row_height: f32,
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) {
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if tab.scroll_to_main {
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let target_row = tab.main_scroll_offset;
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let adgusted_row_height = row_height + 3f32;
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let scroll_offset = (target_row as f32) * adgusted_row_height;
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eprintln!("=== SCROLL TO LINE ===");
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eprintln!(" main_scroll_offset (selected line): {}", tab.main_scroll_offset);
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eprintln!(" target_row (with -5 context): {}", target_row);
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eprintln!(" row_height: {}", row_height);
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eprintln!(" calculated scroll_offset: {}", scroll_offset);
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eprintln!(" force_scroll: true");
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tab.desired_scroll_offset = scroll_offset;
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tab.force_scroll = true;
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tab.scroll_to_main = false;
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}
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}
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fn handle_page_scroll(
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ui: &mut egui::Ui,
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_scroll_id: &egui::Id,
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tab: &mut FileTab,
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row_height: f32,
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total_lines: usize,
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) {
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if let Some(direction) = tab.page_scroll_direction.take() {
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let viewport_height = ui.available_height();
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let rows_per_page = (viewport_height / row_height).floor().max(1.0);
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let scroll_delta = direction * rows_per_page * row_height;
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let max_offset = (total_lines as f32 * row_height - viewport_height).max(0.0);
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let new_offset = (tab.desired_scroll_offset + scroll_delta).clamp(0.0, max_offset);
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eprintln!(
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"Page scroll: current_offset={}, scroll_delta={}, new_offset={}",
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tab.desired_scroll_offset, scroll_delta, new_offset
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);
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tab.desired_scroll_offset = new_offset;
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tab.force_scroll = true;
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}
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}
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fn render_visible_lines(
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ui: &mut egui::Ui,
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tab: &mut FileTab,
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highlight_rules: &[HighlightRule],
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show_all: bool,
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row_range: std::ops::Range<usize>,
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) {
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ui.style_mut().spacing.item_spacing.y = 0.0;
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for display_idx in row_range {
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let (line_num, content) = get_line_content(tab, show_all, display_idx);
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let is_selected = tab.selected_line == Some(line_num);
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render_line(
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ui,
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&content,
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line_num,
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is_selected,
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highlight_rules,
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|clicked| {
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if clicked {
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tab.selected_line = Some(line_num);
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if !show_all {
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tab.main_scroll_offset = line_num;
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tab.scroll_to_main = true;
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}
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}
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},
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);
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}
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}
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fn get_line_content(tab: &mut FileTab, show_all: bool, display_idx: usize) -> (usize, String) {
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if show_all {
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let content = tab
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.line_index
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.read_line(&mut tab.file_handle, display_idx)
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.unwrap_or_default();
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(display_idx, content)
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} else {
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if display_idx < tab.filtered_lines.len() {
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let filtered = &tab.filtered_lines[display_idx];
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(filtered.line_number, filtered.content.clone())
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} else {
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(0, String::new())
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}
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}
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}
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fn render_line<F>(
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ui: &mut egui::Ui,
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content: &str,
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line_num: usize,
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is_selected: bool,
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highlight_rules: &[HighlightRule],
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on_click: F,
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) where
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F: FnOnce(bool),
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{
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let highlight_color = highlight_rules
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.iter()
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.find(|rule| rule.enabled && content.contains(&rule.pattern))
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.map(|rule| egui::Color32::from_rgb(rule.color[0], rule.color[1], rule.color[2]));
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let bg_color = if is_selected {
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egui::Color32::from_rgb(70, 130, 180)
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} else if let Some(color) = highlight_color {
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color
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} else {
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egui::Color32::TRANSPARENT
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};
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let frame = egui::Frame::none()
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.fill(bg_color)
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.inner_margin(egui::Margin::symmetric(2.0, 1.0));
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frame.show(ui, |ui| {
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ui.horizontal(|ui| {
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let line_num_text = egui::RichText::new(format!("{:6} ", line_num + 1))
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.monospace()
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.color(if is_selected {
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egui::Color32::WHITE
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} else {
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egui::Color32::DARK_GRAY
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});
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let line_num_response = ui.label(line_num_text);
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let text = egui::RichText::new(content).monospace().color(
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if is_selected {
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egui::Color32::WHITE
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} else {
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ui.style().visuals.text_color()
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},
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);
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let text_response = ui
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.scope(|ui| {
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ui.style_mut().visuals.selection.bg_fill =
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egui::Color32::from_rgb(255, 180, 50);
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ui.style_mut().visuals.selection.stroke.color =
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egui::Color32::from_rgb(200, 140, 30);
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ui.add(egui::Label::new(text).selectable(true))
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})
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.inner;
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let clicked =
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line_num_response.clicked() || (text_response.clicked() && !text_response.has_focus());
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on_click(clicked);
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})
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});
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}
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