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fix(virtual_list): Scroll visual y click con offset correcto

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- drawRows: Calcular window_offset para dibujar desde scroll_offset
- handleMouseClick: Convertir screen_row a data_idx con offset
- Antes siempre dibujaba desde índice 0 del buffer

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
R.Eugenio 2025-12-23 14:11:12 +01:00
parent ab39830477
commit b9e7434ef7
1 changed files with 17 additions and 6 deletions
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23
src/widgets/virtual_list/virtual_list.zig
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@ -321,12 +321,19 @@ fn drawRows(
const row_h = config.row_height;
// Calculate offset within the window buffer
// scroll_offset es la posición global, window_start es donde empieza el buffer
const window_offset = list_state.scroll_offset -| list_state.window_start;
// Draw each visible row
var row_idx: usize = 0;
while (row_idx < visible_rows and row_idx < list_state.current_window.len) : (row_idx += 1) {
while (row_idx < visible_rows) : (row_idx += 1) {
const data_idx = window_offset + row_idx;
if (data_idx >= list_state.current_window.len) break;
const row_y = content_bounds.y + @as(i32, @intCast(row_idx * row_h));
const global_idx = list_state.windowToGlobalIndex(row_idx);
const row = list_state.current_window[row_idx];
const global_idx = list_state.scroll_offset + row_idx; // Índice global real
const row = list_state.current_window[data_idx];
// Determine row background
const is_selected = list_state.selected_id != null and row.id == list_state.selected_id.?;
@ -498,10 +505,14 @@ fn handleMouseClick(
// Check if click is in content area (not header)
if (mouse.y >= content_y) {
const relative_y = mouse.y - content_y;
const row_idx = @as(usize, @intCast(relative_y)) / config.row_height;
const screen_row = @as(usize, @intCast(relative_y)) / config.row_height;
if (row_idx < list_state.current_window.len) {
list_state.selectByWindowIndex(row_idx);
// Convert screen row to buffer index (accounting for scroll)
const window_offset = list_state.scroll_offset -| list_state.window_start;
const data_idx = window_offset + screen_row;
if (data_idx < list_state.current_window.len) {
list_state.selectById(list_state.current_window[data_idx].id);
// Check for double click
// TODO: implement double click detection with timing