/// <summary> /// Lays out components in the box layout container against the layout axis. /// </summary> /// <param name="required">The calculated minimum and preferred sizes.</param> /// <param name="args">The parameters to use for layout.</param> /// <param name="status">The current status of layout.</param> private static void DoLayoutPerp(LayoutResults required, BoxLayoutParams args, LayoutStatus status) { var components = ListPool <ILayoutController, BoxLayoutGroup> .Allocate(); var direction = args.Direction; float size = status.size; foreach (var child in required.children) { var obj = child.source; // Active objects only if (obj != null && obj.activeInHierarchy) { float compSize = size; if (child.flexible <= 0.0f) { // Does not expand to all compSize = Math.Min(compSize, child.preferred); } float offset = (size > compSize) ? GetOffset(args, status.direction, size - compSize) : 0.0f; // Place and size component obj.AddOrGet <RectTransform>().SetInsetAndSizeFromParentEdge(status.edge, offset + status.offset, compSize); // Invoke SetLayout on dependents components.Clear(); obj.GetComponents(components); foreach (var component in components) { if (!PUIUtils.IgnoreLayout(component)) { if (direction == PanelDirection.Horizontal) { component.SetLayoutVertical(); } else // if (direction == PanelDirection.Vertical) { component.SetLayoutHorizontal(); } } } } } components.Recycle(); }
/// <summary> /// Lays out components in the box layout container parallel to the layout axis. /// </summary> /// <param name="required">The calculated minimum and preferred sizes.</param> /// <param name="args">The parameters to use for layout.</param> /// <param name="status">The current status of layout.</param> private static void DoLayoutLinear(LayoutResults required, BoxLayoutParams args, LayoutStatus status) { var total = required.total; var components = ListPool <ILayoutController, BoxLayoutGroup> .Allocate(); var direction = args.Direction; // Determine flex size ratio float size = status.size, prefRatio = 0.0f, minSize = total.min, prefSize = total.preferred, excess = Math.Max(0.0f, size - prefSize), flexTotal = total. flexible, offset = status.offset, spacing = args.Spacing; if (size > minSize && prefSize > minSize) { // Do not divide by 0 prefRatio = Math.Min(1.0f, (size - minSize) / (prefSize - minSize)); } if (excess > 0.0f && flexTotal == 0.0f) { // If no components can be expanded, offset all offset += GetOffset(args, status.direction, excess); } foreach (var child in required.children) { var obj = child.source; // Active objects only if (obj != null && obj.activeInHierarchy) { float compSize = child.min; if (prefRatio > 0.0f) { compSize += (child.preferred - child.min) * prefRatio; } if (excess > 0.0f && flexTotal > 0.0f) { compSize += excess * child.flexible / flexTotal; } // Place and size component obj.AddOrGet <RectTransform>().SetInsetAndSizeFromParentEdge(status.edge, offset, compSize); offset += compSize + ((compSize > 0.0f) ? spacing : 0.0f); // Invoke SetLayout on dependents components.Clear(); obj.GetComponents(components); foreach (var component in components) { if (!PUIUtils.IgnoreLayout(component)) { if (direction == PanelDirection.Horizontal) { component.SetLayoutHorizontal(); } else // if (direction == PanelDirection.Vertical) { component.SetLayoutVertical(); } } } } } components.Recycle(); }