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52 lines
1.9 KiB
52 lines
1.9 KiB
5 years ago
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using System;
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using Unity.UIWidgets.foundation;
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using Unity.UIWidgets.ui;
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using UnityEngine;
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namespace Unity.UIWidgets.painting {
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public static class Geometry {
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public static Offset positionDependentBox(
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Size size = null,
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Size childSize = null,
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Offset target = null,
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bool? preferBelow = null,
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float verticalOffset = 0.0f,
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float margin = 10.0f) {
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D.assert(size != null);
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D.assert(childSize != null);
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D.assert(target != null);
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D.assert(preferBelow != null);
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bool fitsBelow = target.dy + verticalOffset + childSize.height <= size.height - margin;
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bool fitsAbove = target.dy - verticalOffset - childSize.height >= margin;
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bool tooltipBelow = (preferBelow ?? true) ? (fitsBelow || !fitsAbove) : !(fitsAbove || !fitsBelow);
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float y;
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if (tooltipBelow) {
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y = Mathf.Min(target.dy + verticalOffset, size.height - margin);
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}
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else {
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y = Mathf.Max(target.dy - verticalOffset - childSize.height, margin);
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}
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float x;
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if (size.width - margin * 2.0 < childSize.width) {
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x = (size.width - childSize.width) / 2.0f;
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}
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else {
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float normalizedTargetX = target.dx.clamp(margin, size.width - margin);
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float edge = margin + childSize.width / 2.0f;
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if (normalizedTargetX < edge) {
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x = margin;
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}
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else if (normalizedTargetX > size.width - edge) {
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x = size.width - margin - childSize.width;
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}
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else {
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x = normalizedTargetX - childSize.width / 2.0f;
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}
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}
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return new Offset(x, y);
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}
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}
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}
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