v0.5.0

• Add OPEN_TITLE_BAR_CONTEXT_MENU_CMD for windows.
• Add DRAG_MOVE_RESIZE_CMD for windows.
• Breaking View API changes:
  • Add open_title_bar_context_menu.
  • Rename close_window to close.
  • Rename focus_window to focus.
  • Add set_enabled_buttons.
  • Add set_system_shutdown_warn.
  • Note that this is only a breaking change for direct dependents of zng-view-api.
• Better "custom chrome" example in examples/window.rs.
• Add OPEN_TITLE_BAR_CONTEXT_MENU_CMD to window API.
• Fix WIDGET.border().offsets() not including the innermost border offset.
• Add WindowVars::enabled_buttons to window API.
• Add WindowVars::system_shutdown_warn to window API.
• Breaking Fix when/property assign expansion order.
  • When blocks now expand in the same declaration order, before they always expanded after all property assigns.

// code like this incorrectly builds in v0.4:
fn version_0_4() -> impl UiNode {
    let can_move = var(true);
    Container! {
        when *#{can_move} {
            mouse::cursor = mouse::CursorIcon::Move;
        }
        mouse::on_mouse_down = hn!(can_move, |_| {
            let _use = &can_move;
        });
    }
}
// now in v0.5 the value must be cloned before the last move:
fn version_0_5() -> impl UiNode {
    let can_move = var(true);
    Container! {
        when *#{can_move.clone()} {
            mouse::cursor = mouse::CursorIcon::Move;
        }
        mouse::on_mouse_down = hn!(|_| {
            let _use = &can_move;
        });
    }
}

• Breaking Rename VarCapabilities to VarCapability.
• Breaking Add window extension API in zng-view.
  • Add ViewExtension::window.
  • Add OpenGlContext and replace the gl fields with context in multiple extension API args.
  • Rename is_config_only to is_init_only.
  • Note that this is only a breaking change for direct dependents of zng-view.
  • Rename ViewRenderExtensionError to ViewExtensionError.
• Add window reference to args for RendererExtension when possible.
• Fix zng::view_process::default::run_same_process not propagating app panics.
• Add WindowCloseRequestedArgs::headed/headless.
• Breaking Fix tab nav when a focus scope with FocusScopeOnFocus::LastFocused is a child of
  another scope with TabNav::Cycle.
  • Breaking change has minimal impact:
    • Added input in WidgetFocusInfo::on_focus_scope_move.
    • Removed FocusChangedCause::is_prev_request.
• Add FocusChangedCause::request_target helper method.
• Add WidgetPath::parent_id helper method.
• Fix auto scroll to focused issues:
  • When the focused child does not subscribe to focus change events.
  • Scrolling when large widget is already visible.
  • Scrolling again to same widget when focus change event did not represent a widget change.
• Add WidgetInfo::spatial_bounds.
• Fix directional navigation cycling only inside viewport now full spatial bounds of scopes.
• Add better conversions for CommandScope. You can now scope on named widgets directly, FOO_CMD.scoped("bar-wgt").
• Add ContextualizedVar::new_value.
• Breaking SCROLL.scroll_* methods now return contextual vars, not values.
• Fix panic on window move in Wayland.
• Fix minimize command removing maximized state from restore.
• Fix issue when parent widget's cursor can override child's cursor when the parent cursor var updates.
• Breaking Remove the cursor_img property and window var.
• Breaking The cursor property now has input type CursorSource.
  • Note that the CursorIcon type converts to CursorSource.
• Implement custom cursor images in the default view.