╭─────────────╮ │scroll to top│ ╰─────────────╯ ╭ Header.zig ───────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯
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201 if (text_box) |tab| tab.options.border_style = if (selected_tab == id) .single else .hidden; 202 tabs_width += if (child.min_size) |min_size| min_size.width orelse 0 else 0; 203 } 204 205 const viewport_width = constraint.max_size.width orelse constraint.min_size.width; 206 const content_width = if (viewport_width) |width| width -| 2 else null; 207 const back_width: usize = if (back_visible) ui.widget.back_button_width else 0; 208 const wrap = if (content_width) |width| self.first_group_width + back_width + tabs_width > width else false; 209 box.options.direction = if (wrap) .vert else .horiz; 210 tabs_child.min_size = if (wrap) .{ .width = content_width, .height = null } else null; 211 212 var scroll_constraint = constraint; 213 scroll_constraint.min_size.width = viewport_width; 214 try self.scroll.build(allocator, scroll_constraint, root_focus); 215 } 216 217 pub fn input(self: *View, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 218 _ = allocator; 219 const current_tab = self.currentTabIndex() orelse return; 220 if (inp.moveTab(key, current_tab, self.tab_ids.count())) |new_tab| { 221 const tab_id = self.tab_ids.keys()[new_tab]; 222 root_focus.setFocus(tab_id); 223 const tabs_child = self.tabsChild(); 224 const tabs_rect = tabs_child.rect orelse return; 225 const tab = tabs_child.widget.box.children.get(tab_id) orelse return; 226 var rect = tab.rect orelse return; 227 rect.x += tabs_rect.x; 228 rect.y += tabs_rect.y; 229 self.scroll.scrollToRect(rect); 230 } 231 } 232 233 pub fn clearGrid(self: *View) void { 234 self.scroll.clearGrid(); 235 } 236 237 pub fn getGrid(self: View) ?Grid { 238 return self.scroll.getGrid(); 239 } 240 241 pub fn getFocus(self: *View) *Focus { 242 return self.scroll.getFocus(); 243 } 244 245 pub fn getSelectedIndex(self: View) ?usize { 246 return self.currentTabIndex(); 247 } 248 249 fn currentTabIndex(self: View) ?usize { 250 if (self.scroll.child.box.focus.child_id != self.tabs_id) return null; 251 const child_id = self.tabsChild().widget.box.focus.child_id orelse return null; 252 return self.tab_ids.getIndex(child_id); 253 } 254 255 fn tabsChild(self: *const View) *wgt.Box(ui.Widget).Child { 256 return self.scroll.child.box.children.getPtr(self.tabs_id) orelse unreachable; 257 } 258 }; 259