╭─────────────╮ │scroll to top│ ╰─────────────╯ ╭ Header.zig ───────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯
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427 const wrap = if (content_width) |width| self.first_group_width + back_width + tabs_width > width else false; 428 box.options.direction = if (wrap) .vert else .horiz; 429 tabs_child.min_size = if (wrap) .{ .width = content_width, .height = null } else null; 430 (box.children.getPtr(self.gap_id) orelse unreachable).hidden = !wrap; 431 432 var scroll_constraint = constraint; 433 scroll_constraint.min_size.width = viewport_width; 434 try self.scroll.build(allocator, scroll_constraint, root_focus); 435 } 436 437 pub fn input(self: *View, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 438 _ = allocator; 439 const current_tab = self.currentTabIndex() orelse return; 440 if (inp.moveTab(key, current_tab, self.tab_ids.count())) |new_tab| { 441 const tab_id = self.tab_ids.keys()[new_tab]; 442 root_focus.setFocus(tab_id); 443 const tabs_child = self.tabsChild(); 444 const tabs_rect = tabs_child.rect orelse return; 445 const tab = tabs_child.widget.box.children.get(tab_id) orelse return; 446 var rect = tab.rect orelse return; 447 rect.x += tabs_rect.x; 448 rect.y += tabs_rect.y; 449 self.scroll.scrollToRect(rect); 450 } 451 } 452 453 pub fn clearGrid(self: *View) void { 454 self.scroll.clearGrid(); 455 } 456 457 pub fn getGrid(self: View) ?Grid { 458 return self.scroll.getGrid(); 459 } 460 461 pub fn getFocus(self: *View) *Focus { 462 return self.scroll.getFocus(); 463 } 464 465 pub fn getSelectedIndex(self: View) ?usize { 466 return self.currentTabIndex(); 467 } 468 469 fn currentTabIndex(self: View) ?usize { 470 if (self.scroll.child.box.focus.child_id != self.tabs_id) return null; 471 const child_id = self.tabsChild().widget.box.focus.child_id orelse return null; 472 return self.tab_ids.getIndex(child_id); 473 } 474 475 fn tabsChild(self: *const View) *wgt.Box(ui.Widget).Child { 476 return self.scroll.child.box.children.getPtr(self.tabs_id) orelse unreachable; 477 } 478 }; 479