diff options
Diffstat (limited to 'Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Layout/GridLayoutGroup.cs')
| -rw-r--r-- | Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Layout/GridLayoutGroup.cs | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Layout/GridLayoutGroup.cs b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Layout/GridLayoutGroup.cs new file mode 100644 index 0000000..170e410 --- /dev/null +++ b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Layout/GridLayoutGroup.cs @@ -0,0 +1,207 @@ +using UnityEngine; +using System.Collections.Generic; + +namespace UnityEngine.UI +{ + [AddComponentMenu("Layout/Grid Layout Group", 152)] + public class GridLayoutGroup : LayoutGroup + { + public enum Corner { UpperLeft = 0, UpperRight = 1, LowerLeft = 2, LowerRight = 3 } + public enum Axis { Horizontal = 0, Vertical = 1 } + public enum Constraint { Flexible = 0, FixedColumnCount = 1, FixedRowCount = 2 } + + [SerializeField] protected Corner m_StartCorner = Corner.UpperLeft; + public Corner startCorner { get { return m_StartCorner; } set { SetProperty(ref m_StartCorner, value); } } + + [SerializeField] protected Axis m_StartAxis = Axis.Horizontal; + public Axis startAxis { get { return m_StartAxis; } set { SetProperty(ref m_StartAxis, value); } } + + [SerializeField] protected Vector2 m_CellSize = new Vector2(100, 100); + public Vector2 cellSize { get { return m_CellSize; } set { SetProperty(ref m_CellSize, value); } } + + [SerializeField] protected Vector2 m_Spacing = Vector2.zero; + public Vector2 spacing { get { return m_Spacing; } set { SetProperty(ref m_Spacing, value); } } + + [SerializeField] protected Constraint m_Constraint = Constraint.Flexible; + public Constraint constraint { get { return m_Constraint; } set { SetProperty(ref m_Constraint, value); } } + + [SerializeField] protected int m_ConstraintCount = 2; + public int constraintCount { get { return m_ConstraintCount; } set { SetProperty(ref m_ConstraintCount, Mathf.Max(1, value)); } } + + protected GridLayoutGroup() + {} + + #if UNITY_EDITOR + protected override void OnValidate() + { + base.OnValidate(); + constraintCount = constraintCount; + } + + #endif + + public override void CalculateLayoutInputHorizontal() + { + base.CalculateLayoutInputHorizontal(); + + int minColumns = 0; + int preferredColumns = 0; + if (m_Constraint == Constraint.FixedColumnCount) + { + minColumns = preferredColumns = m_ConstraintCount; + } + else if (m_Constraint == Constraint.FixedRowCount) + { + minColumns = preferredColumns = Mathf.CeilToInt(rectChildren.Count / (float)m_ConstraintCount - 0.001f); + } + else + { + minColumns = 1; + preferredColumns = Mathf.CeilToInt(Mathf.Sqrt(rectChildren.Count)); + } + + SetLayoutInputForAxis( + padding.horizontal + (cellSize.x + spacing.x) * minColumns - spacing.x, + padding.horizontal + (cellSize.x + spacing.x) * preferredColumns - spacing.x, + -1, 0); + } + + public override void CalculateLayoutInputVertical() + { + int minRows = 0; + if (m_Constraint == Constraint.FixedColumnCount) + { + minRows = Mathf.CeilToInt(rectChildren.Count / (float)m_ConstraintCount - 0.001f); + } + else if (m_Constraint == Constraint.FixedRowCount) + { + minRows = m_ConstraintCount; + } + else + { + float width = rectTransform.rect.size.x; + int cellCountX = Mathf.Max(1, Mathf.FloorToInt((width - padding.horizontal + spacing.x + 0.001f) / (cellSize.x + spacing.x))); + minRows = Mathf.CeilToInt(rectChildren.Count / (float)cellCountX); + } + + float minSpace = padding.vertical + (cellSize.y + spacing.y) * minRows - spacing.y; + SetLayoutInputForAxis(minSpace, minSpace, -1, 1); + } + + public override void SetLayoutHorizontal() + { + SetCellsAlongAxis(0); + } + + public override void SetLayoutVertical() + { + SetCellsAlongAxis(1); + } + + private void SetCellsAlongAxis(int axis) + { + // Normally a Layout Controller should only set horizontal values when invoked for the horizontal axis + // and only vertical values when invoked for the vertical axis. + // However, in this case we set both the horizontal and vertical position when invoked for the vertical axis. + // Since we only set the horizontal position and not the size, it shouldn't affect children's layout, + // and thus shouldn't break the rule that all horizontal layout must be calculated before all vertical layout. + + if (axis == 0) + { + // Only set the sizes when invoked for horizontal axis, not the positions. + for (int i = 0; i < rectChildren.Count; i++) + { + RectTransform rect = rectChildren[i]; + + m_Tracker.Add(this, rect, + DrivenTransformProperties.Anchors | + DrivenTransformProperties.AnchoredPosition | + DrivenTransformProperties.SizeDelta); + + rect.anchorMin = Vector2.up; + rect.anchorMax = Vector2.up; + rect.sizeDelta = cellSize; + } + return; + } + + float width = rectTransform.rect.size.x; + float height = rectTransform.rect.size.y; + + int cellCountX = 1; + int cellCountY = 1; + if (m_Constraint == Constraint.FixedColumnCount) + { + cellCountX = m_ConstraintCount; + cellCountY = Mathf.CeilToInt(rectChildren.Count / (float)cellCountX - 0.001f); + } + else if (m_Constraint == Constraint.FixedRowCount) + { + cellCountY = m_ConstraintCount; + cellCountX = Mathf.CeilToInt(rectChildren.Count / (float)cellCountY - 0.001f); + } + else + { + if (cellSize.x + spacing.x <= 0) + cellCountX = int.MaxValue; + else + cellCountX = Mathf.Max(1, Mathf.FloorToInt((width - padding.horizontal + spacing.x + 0.001f) / (cellSize.x + spacing.x))); + + if (cellSize.y + spacing.y <= 0) + cellCountY = int.MaxValue; + else + cellCountY = Mathf.Max(1, Mathf.FloorToInt((height - padding.vertical + spacing.y + 0.001f) / (cellSize.y + spacing.y))); + } + + int cornerX = (int)startCorner % 2; + int cornerY = (int)startCorner / 2; + + int cellsPerMainAxis, actualCellCountX, actualCellCountY; + if (startAxis == Axis.Horizontal) + { + cellsPerMainAxis = cellCountX; + actualCellCountX = Mathf.Clamp(cellCountX, 1, rectChildren.Count); + actualCellCountY = Mathf.Clamp(cellCountY, 1, Mathf.CeilToInt(rectChildren.Count / (float)cellsPerMainAxis)); + } + else + { + cellsPerMainAxis = cellCountY; + actualCellCountY = Mathf.Clamp(cellCountY, 1, rectChildren.Count); + actualCellCountX = Mathf.Clamp(cellCountX, 1, Mathf.CeilToInt(rectChildren.Count / (float)cellsPerMainAxis)); + } + + Vector2 requiredSpace = new Vector2( + actualCellCountX * cellSize.x + (actualCellCountX - 1) * spacing.x, + actualCellCountY * cellSize.y + (actualCellCountY - 1) * spacing.y + ); + Vector2 startOffset = new Vector2( + GetStartOffset(0, requiredSpace.x), + GetStartOffset(1, requiredSpace.y) + ); + + for (int i = 0; i < rectChildren.Count; i++) + { + int positionX; + int positionY; + if (startAxis == Axis.Horizontal) + { + positionX = i % cellsPerMainAxis; + positionY = i / cellsPerMainAxis; + } + else + { + positionX = i / cellsPerMainAxis; + positionY = i % cellsPerMainAxis; + } + + if (cornerX == 1) + positionX = actualCellCountX - 1 - positionX; + if (cornerY == 1) + positionY = actualCellCountY - 1 - positionY; + + SetChildAlongAxis(rectChildren[i], 0, startOffset.x + (cellSize[0] + spacing[0]) * positionX, cellSize[0]); + SetChildAlongAxis(rectChildren[i], 1, startOffset.y + (cellSize[1] + spacing[1]) * positionY, cellSize[1]); + } + } + } +} |