223 lines
8.0 KiB
Rust
223 lines
8.0 KiB
Rust
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use crate::app::TextEditor;
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use eframe::egui;
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use super::find_highlight::draw_find_highlight;
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pub(super) fn editor_view(
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ui: &mut egui::Ui,
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app: &mut TextEditor,
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) -> (egui::Response, Option<egui::Rect>) {
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let current_match_position = app.get_current_match_position();
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let show_find = app.show_find;
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let prev_show_find = app.prev_show_find;
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let show_preferences = app.show_preferences;
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let show_about = app.show_about;
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let show_shortcuts = app.show_shortcuts;
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let word_wrap = app.word_wrap;
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let font_size = app.font_size;
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// Check if reset zoom was requested in previous frame
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let reset_zoom_key = egui::Id::new("editor_reset_zoom");
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let should_reset_zoom = ui.ctx().memory_mut(|mem| {
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mem.data.get_temp::<bool>(reset_zoom_key).unwrap_or(false)
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});
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// Reset zoom if requested
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if should_reset_zoom {
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app.zoom_factor = 1.0;
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ui.ctx().set_zoom_factor(1.0);
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ui.ctx().memory_mut(|mem| {
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mem.data.insert_temp(reset_zoom_key, false);
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});
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}
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if let Some(active_tab) = app.get_active_tab_mut() {
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let bg_color = ui.visuals().extreme_bg_color;
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let editor_rect = ui.available_rect_before_wrap();
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ui.painter().rect_filled(editor_rect, 0.0, bg_color);
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let desired_width = if word_wrap {
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ui.available_width()
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} else {
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f32::INFINITY
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};
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let text_edit = egui::TextEdit::multiline(&mut active_tab.content)
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.frame(false)
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.font(egui::TextStyle::Monospace)
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.code_editor()
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.desired_width(desired_width)
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.desired_rows(0)
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.lock_focus(true)
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.cursor_at_end(false)
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.id(egui::Id::new("main_text_editor"));
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let output = text_edit.show(ui);
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// Store text length for context menu
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let text_len = active_tab.content.len();
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// Right-click context menu
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output.response.context_menu(|ui| {
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if ui.button("Cut").clicked() {
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ui.ctx().input_mut(|i| i.events.push(egui::Event::Cut));
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ui.close_menu();
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}
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if ui.button("Copy").clicked() {
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ui.ctx().input_mut(|i| i.events.push(egui::Event::Copy));
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ui.close_menu();
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}
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if ui.button("Paste").clicked() {
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ui.ctx()
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.send_viewport_cmd(egui::ViewportCommand::RequestPaste);
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ui.close_menu();
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}
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if ui.button("Delete").clicked() {
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ui.ctx().input_mut(|i| {
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i.events.push(egui::Event::Key {
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key: egui::Key::Delete,
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physical_key: None,
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pressed: true,
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repeat: false,
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modifiers: egui::Modifiers::NONE,
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})
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});
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ui.close_menu();
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}
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if ui.button("Select All").clicked() {
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let text_edit_id = egui::Id::new("main_text_editor");
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if let Some(mut state) = egui::TextEdit::load_state(ui.ctx(), text_edit_id) {
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let select_all_range = egui::text::CCursorRange::two(
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egui::text::CCursor::new(0),
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egui::text::CCursor::new(text_len),
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);
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state.cursor.set_char_range(Some(select_all_range));
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egui::TextEdit::store_state(ui.ctx(), text_edit_id, state);
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}
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ui.close_menu();
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}
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ui.separator();
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if ui.button("Reset Zoom").clicked() {
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ui.ctx().memory_mut(|mem| {
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mem.data.insert_temp(reset_zoom_key, true);
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});
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ui.close_menu();
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}
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});
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let cursor_rect = if let Some(cursor_range) = output.state.cursor.char_range() {
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let cursor_pos = cursor_range.primary.index;
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let content = &active_tab.content;
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let text_up_to_cursor = &content[..cursor_pos.min(content.len())];
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let cursor_line = text_up_to_cursor.chars().filter(|&c| c == '\n').count();
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let font_id = ui
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.style()
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.text_styles
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.get(&egui::TextStyle::Monospace)
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.unwrap_or(&egui::FontId::monospace(font_size))
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.clone();
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let line_height = ui.fonts(|fonts| fonts.row_height(&font_id));
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let y_pos = output.response.rect.top() + (cursor_line as f32 * line_height);
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let cursor_rect = egui::Rect::from_min_size(
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egui::pos2(output.response.rect.left(), y_pos),
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egui::vec2(2.0, line_height),
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);
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Some(cursor_rect)
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} else {
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None
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};
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if !show_find && prev_show_find {
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if let Some((start_pos, end_pos)) = current_match_position {
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let text_edit_id = egui::Id::new("main_text_editor");
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if let Some(mut state) = egui::TextEdit::load_state(ui.ctx(), text_edit_id) {
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let cursor_range = egui::text::CCursorRange::two(
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egui::text::CCursor::new(start_pos),
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egui::text::CCursor::new(end_pos),
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);
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state.cursor.set_char_range(Some(cursor_range));
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egui::TextEdit::store_state(ui.ctx(), text_edit_id, state);
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}
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}
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}
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if show_find {
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if let Some((start_pos, end_pos)) = current_match_position {
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draw_find_highlight(
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ui,
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&active_tab.content,
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start_pos,
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end_pos,
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output.response.rect,
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font_size,
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);
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}
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}
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if output.response.changed() {
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active_tab.update_modified_state();
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app.find_matches.clear();
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app.current_match_index = None;
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}
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if !output.response.has_focus()
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&& !show_preferences
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&& !show_about
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&& !show_shortcuts
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&& !show_find
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{
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output.response.request_focus();
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}
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(output.response, cursor_rect)
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} else {
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(ui.label("No file open, how did you get here?"), None)
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}
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}
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pub(super) fn editor_view_ui(ui: &mut egui::Ui, app: &mut TextEditor) {
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let word_wrap = app.word_wrap;
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if word_wrap {
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let (_response, _cursor_rect) = editor_view(ui, app);
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} else {
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let estimated_width = app.calculate_content_based_width(ui);
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let output = egui::ScrollArea::horizontal()
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.auto_shrink([false; 2])
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.show(ui, |ui| {
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ui.allocate_ui_with_layout(
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egui::Vec2::new(estimated_width, ui.available_height()),
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egui::Layout::left_to_right(egui::Align::TOP),
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|ui| editor_view(ui, app),
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)
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});
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let editor_response = &output.inner.inner.0;
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if let Some(cursor_rect) = output.inner.inner.1 {
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let text_edit_id = egui::Id::new("main_text_editor");
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let current_cursor_pos =
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if let Some(state) = egui::TextEdit::load_state(ui.ctx(), text_edit_id) {
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state.cursor.char_range().map(|range| range.primary.index)
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} else {
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None
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};
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let cursor_moved = current_cursor_pos != app.previous_cursor_position;
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let text_changed = editor_response.changed();
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let should_scroll = (cursor_moved || text_changed)
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&& {
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let visible_area = ui.clip_rect();
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!visible_area.intersects(cursor_rect)
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};
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if should_scroll {
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ui.scroll_to_rect(cursor_rect, Some(egui::Align::Center));
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}
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app.previous_cursor_position = current_cursor_pos;
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}
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}
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}
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