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895 行
30 KiB
895 行
30 KiB
using UIWidgets.Runtime.rendering;
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using Unity.UIWidgets.foundation;
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using Unity.UIWidgets.gestures;
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using Unity.UIWidgets.painting;
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using Unity.UIWidgets.ui;
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using UnityEngine;
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using Rect = Unity.UIWidgets.ui.Rect;
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namespace Unity.UIWidgets.rendering {
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public abstract class RenderShiftedBox : RenderObjectWithChildMixinRenderBox<RenderBox> {
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protected RenderShiftedBox(RenderBox child) {
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this.child = child;
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}
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protected internal override float computeMinIntrinsicWidth(float height) {
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if (child != null) {
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return child.getMinIntrinsicWidth(height);
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}
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return 0.0f;
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}
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protected internal override float computeMaxIntrinsicWidth(float height) {
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if (child != null) {
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return child.getMaxIntrinsicWidth(height);
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}
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return 0.0f;
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}
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protected internal override float computeMinIntrinsicHeight(float width) {
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if (child != null) {
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return child.getMinIntrinsicHeight(width);
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}
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return 0.0f;
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}
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protected internal override float computeMaxIntrinsicHeight(float width) {
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if (child != null) {
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return child.getMaxIntrinsicHeight(width);
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}
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return 0.0f;
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}
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protected override float? computeDistanceToActualBaseline(TextBaseline baseline) {
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float? result;
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if (child != null) {
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D.assert(!debugNeedsLayout);
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result = child.getDistanceToActualBaseline(baseline);
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if (result != null) {
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var childParentData = (BoxParentData) child.parentData;
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result += childParentData.offset.dy;
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}
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}
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else {
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result = base.computeDistanceToActualBaseline(baseline);
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}
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return result;
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}
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public override void paint(PaintingContext context, Offset offset) {
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if (child != null) {
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var childParentData = (BoxParentData) child.parentData;
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context.paintChild(child, childParentData.offset + offset);
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}
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}
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protected override bool hitTestChildren(BoxHitTestResult result, Offset position = null) {
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if (child != null) {
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var childParentData = (BoxParentData) child.parentData;
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return result.addWithPaintOffset(
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offset: childParentData.offset,
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position: position,
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hitTest: (BoxHitTestResult resultIn, Offset transformed) => {
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D.assert(transformed == position - childParentData.offset);
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return child.hitTest(resultIn, position: transformed);
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}
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);
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}
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return false;
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}
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}
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public class RenderPadding : RenderShiftedBox {
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public RenderPadding(
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EdgeInsets padding = null,
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RenderBox child = null
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) : base(child) {
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D.assert(padding != null);
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D.assert(padding.isNonNegative);
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_padding = padding;
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}
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public EdgeInsets padding {
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get { return _padding; }
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set {
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D.assert(value != null);
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D.assert(value.isNonNegative);
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if (_padding == value) {
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return;
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}
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_padding = value;
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markNeedsLayout();
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}
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}
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EdgeInsets _padding;
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protected internal override float computeMinIntrinsicWidth(float height) {
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if (child != null) {
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return child.getMinIntrinsicWidth(Mathf.Max(0.0f, height - _padding.vertical)) +
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_padding.horizontal;
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}
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return _padding.horizontal;
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}
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protected internal override float computeMaxIntrinsicWidth(float height) {
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if (child != null) {
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return child.getMaxIntrinsicWidth(Mathf.Max(0.0f, height - _padding.vertical)) +
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_padding.horizontal;
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}
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return _padding.horizontal;
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}
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protected internal override float computeMinIntrinsicHeight(float width) {
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if (child != null) {
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return child.getMinIntrinsicHeight(Mathf.Max(0.0f, width - _padding.horizontal)) +
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_padding.vertical;
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}
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return _padding.vertical;
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}
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protected internal override float computeMaxIntrinsicHeight(float width) {
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if (child != null) {
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return child.getMaxIntrinsicHeight(Mathf.Max(0.0f, width - _padding.horizontal)) +
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_padding.vertical;
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}
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return _padding.vertical;
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}
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protected override void performLayout() {
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if (child == null) {
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size = constraints.constrain(_padding.inflateSize(Size.zero));
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return;
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}
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var innerConstraints = constraints.deflate(_padding);
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child.layout(innerConstraints, parentUsesSize: true);
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var childParentData = (BoxParentData) child.parentData;
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childParentData.offset = _padding.topLeft;
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size = constraints.constrain(_padding.inflateSize(child.size));
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}
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protected override void debugPaintSize(PaintingContext context, Offset offset) {
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base.debugPaintSize(context, offset);
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D.assert(() => {
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Rect outerRect = offset & size;
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D.debugPaintPadding(context.canvas, outerRect,
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child != null ? _padding.deflateRect(outerRect) : null);
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return true;
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});
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}
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public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
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base.debugFillProperties(properties);
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properties.add(new DiagnosticsProperty<EdgeInsets>("padding", padding));
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}
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}
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public abstract class RenderAligningShiftedBox : RenderShiftedBox {
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protected RenderAligningShiftedBox(
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Alignment alignment = null,
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RenderBox child = null
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) : base(child) {
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_alignment = alignment ?? Alignment.center;
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}
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public Alignment alignment {
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get { return _alignment; }
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set {
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D.assert(value != null);
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if (_alignment == value) {
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return;
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}
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_alignment = value;
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markNeedsLayout();
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}
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}
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Alignment _alignment;
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protected void alignChild() {
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D.assert(child != null);
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D.assert(!child.debugNeedsLayout);
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D.assert(child.hasSize);
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D.assert(hasSize);
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var childParentData = (BoxParentData) child.parentData;
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childParentData.offset = _alignment.alongOffset(size - child.size);
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}
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public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
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base.debugFillProperties(properties);
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properties.add(new DiagnosticsProperty<Alignment>("alignment", alignment));
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}
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}
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public class RenderPositionedBox : RenderAligningShiftedBox {
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public RenderPositionedBox(
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RenderBox child = null,
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float? widthFactor = null,
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float? heightFactor = null,
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Alignment alignment = null
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) : base(alignment, child) {
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D.assert(widthFactor == null || widthFactor >= 0.0);
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D.assert(heightFactor == null || heightFactor >= 0.0);
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_widthFactor = widthFactor;
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_heightFactor = heightFactor;
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}
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public float? widthFactor {
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get { return _widthFactor; }
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set {
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D.assert(value == null || value >= 0.0);
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if (_widthFactor == value) {
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return;
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}
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_widthFactor = value;
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markNeedsLayout();
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}
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}
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float? _widthFactor;
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public float? heightFactor {
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get { return _heightFactor; }
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set {
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D.assert(value == null || value >= 0.0);
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if (_heightFactor == value) {
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return;
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}
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_heightFactor = value;
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markNeedsLayout();
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}
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}
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float? _heightFactor;
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protected override void performLayout() {
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bool shrinkWrapWidth = _widthFactor != null || float.IsPositiveInfinity(constraints.maxWidth);
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bool shrinkWrapHeight = _heightFactor != null || float.IsPositiveInfinity(constraints.maxHeight);
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if (child != null) {
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child.layout(constraints.loosen(), parentUsesSize: true);
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size = constraints.constrain(new Size(
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shrinkWrapWidth ? child.size.width * (_widthFactor ?? 1.0f) : float.PositiveInfinity,
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shrinkWrapHeight ? child.size.height * (_heightFactor ?? 1.0f) : float.PositiveInfinity));
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alignChild();
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}
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else {
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size = constraints.constrain(new Size(
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shrinkWrapWidth ? 0.0f : float.PositiveInfinity,
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shrinkWrapHeight ? 0.0f : float.PositiveInfinity));
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}
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}
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protected override void debugPaintSize(PaintingContext context, Offset offset) {
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base.debugPaintSize(context, offset);
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D.assert(() => {
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Paint paint;
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if (child != null && !child.size.isEmpty) {
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Path path;
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paint = new Paint {
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style = PaintingStyle.stroke,
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strokeWidth = 1.0f,
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color = new ui.Color(0xFFFFFF00)
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};
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BoxParentData childParentData = (BoxParentData) child.parentData;
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if (childParentData.offset.dy > 0) {
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float headSize = Mathf.Min(childParentData.offset.dy * 0.2f, 10.0f);
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float x = offset.dx + size.width / 2.0f;
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float y = offset.dy;
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path = new Path();
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path.moveTo(x, y);
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path.lineTo(x += 0.0f, y += childParentData.offset.dy - headSize);
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path.lineTo(x += headSize, y += 0.0f);
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path.lineTo(x += -headSize, y += headSize);
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path.lineTo(x += -headSize, y += -headSize);
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path.lineTo(x += headSize, y += 0.0f);
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x = offset.dx + size.width / 2.0f;
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y = offset.dy + size.height;
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path.moveTo(x, y);
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path.lineTo(x += 0.0f, y += -childParentData.offset.dy + headSize);
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path.lineTo(x += headSize, y += 0.0f);
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path.lineTo(x += -headSize, y += -headSize);
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path.lineTo(x += -headSize, y += headSize);
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path.lineTo(x += headSize, y += 0.0f);
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context.canvas.drawPath(path, paint);
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}
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if (childParentData.offset.dx > 0.0) {
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float headSize = Mathf.Min(childParentData.offset.dx * 0.2f, 10.0f);
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float x = offset.dx;
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float y = offset.dy + size.height / 2.0f;
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path = new Path();
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path.moveTo(x, y);
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path.lineTo(x += childParentData.offset.dx - headSize, y += 0.0f);
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path.lineTo(x += 0.0f, y += headSize);
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path.lineTo(x += headSize, y += -headSize);
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path.lineTo(x += -headSize, y += -headSize);
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path.lineTo(x += 0.0f, y += headSize);
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path.moveTo(x = offset.dx + size.width, y = offset.dy + size.height / 2.0f);
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path.lineTo(x += -childParentData.offset.dx + headSize, y += 0.0f);
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path.lineTo(x += 0.0f, y += headSize);
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path.lineTo(x += -headSize, y += -headSize);
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path.lineTo(x += headSize, y += -headSize);
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path.lineTo(x += 0.0f, y += headSize);
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path.close();
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context.canvas.drawPath(path, paint);
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}
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}
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else {
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paint = new Paint {
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color = new ui.Color(0x90909090),
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};
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context.canvas.drawRect(offset & size, paint);
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}
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return true;
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});
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}
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public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
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base.debugFillProperties(properties);
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properties.add(new FloatProperty("widthFactor", _widthFactor, ifNull: "expand"));
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properties.add(new FloatProperty("heightFactor", _heightFactor, ifNull: "expand"));
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}
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}
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public class RenderConstrainedOverflowBox : RenderAligningShiftedBox {
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public RenderConstrainedOverflowBox(
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RenderBox child = null,
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float? minWidth = null,
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float? maxWidth = null,
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float? minHeight = null,
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float? maxHeight = null,
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Alignment alignment = null
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) : base(alignment, child) {
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_minWidth = minWidth;
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_maxWidth = maxWidth;
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_minHeight = minHeight;
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_maxHeight = maxHeight;
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}
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public float? minWidth {
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get { return _minWidth; }
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set {
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if (_minWidth == value) {
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return;
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}
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_minWidth = value;
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markNeedsLayout();
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}
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}
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public float? _minWidth;
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public float? maxWidth {
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get { return _maxWidth; }
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set {
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if (_maxWidth == value) {
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return;
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}
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_maxWidth = value;
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markNeedsLayout();
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}
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}
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public float? _maxWidth;
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public float? minHeight {
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get { return _minHeight; }
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set {
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if (_minHeight == value) {
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return;
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}
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_minHeight = value;
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markNeedsLayout();
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}
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}
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public float? _minHeight;
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public float? maxHeight {
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get { return _maxHeight; }
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set {
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if (_maxHeight == value) {
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return;
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}
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_maxHeight = value;
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markNeedsLayout();
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}
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}
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public float? _maxHeight;
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public BoxConstraints _getInnerConstraints(BoxConstraints constraints) {
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return new BoxConstraints(
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minWidth: _minWidth ?? constraints.minWidth,
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maxWidth: _maxWidth ?? constraints.maxWidth,
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minHeight: _minHeight ?? constraints.minHeight,
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maxHeight: _maxHeight ?? constraints.maxHeight
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);
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}
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protected override bool sizedByParent {
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get { return true; }
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}
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protected override void performResize() {
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size = constraints.biggest;
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}
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protected override void performLayout() {
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if (child != null) {
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child.layout(_getInnerConstraints(constraints), parentUsesSize: true);
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alignChild();
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}
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}
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}
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public class RenderUnconstrainedBox : RenderAligningShiftedBox {
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public RenderUnconstrainedBox(
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Alignment alignment = null,
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Axis? constrainedAxis = null,
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RenderBox child = null
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) : base(alignment, child) {
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_constrainedAxis = constrainedAxis;
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}
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public Axis? constrainedAxis {
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get { return _constrainedAxis; }
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set {
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if (_constrainedAxis == value) {
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return;
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}
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_constrainedAxis = value;
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markNeedsLayout();
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}
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}
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public Axis? _constrainedAxis;
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public Rect _overflowContainerRect = Rect.zero;
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public Rect _overflowChildRect = Rect.zero;
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public bool _isOverflowing = false;
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protected override void performLayout() {
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if (child != null) {
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BoxConstraints childConstraints = null;
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if (constrainedAxis != null) {
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switch (constrainedAxis) {
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case Axis.horizontal:
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childConstraints = new BoxConstraints(
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maxWidth: constraints.maxWidth,
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minWidth: constraints.minWidth);
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break;
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case Axis.vertical:
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childConstraints = new BoxConstraints(
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maxHeight: constraints.maxHeight,
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minHeight: constraints.minHeight);
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break;
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}
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}
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else {
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childConstraints = new BoxConstraints();
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}
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child.layout(childConstraints, parentUsesSize: true);
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size = constraints.constrain(child.size);
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alignChild();
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var childParentData = (BoxParentData) child.parentData;
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_overflowContainerRect = Offset.zero & size;
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_overflowChildRect = childParentData.offset & child.size;
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}
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else {
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size = constraints.smallest;
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_overflowContainerRect = Rect.zero;
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_overflowChildRect = Rect.zero;
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}
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_isOverflowing = RelativeRect.fromRect(
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_overflowContainerRect, _overflowChildRect).hasInsets;
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}
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public override void paint(PaintingContext context, Offset offset) {
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if (child == null || size.isEmpty) {
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return;
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}
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if (!_isOverflowing) {
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base.paint(context, offset);
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return;
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}
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context.pushClipRect(needsCompositing, offset, Offset.zero & size, base.paint);
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D.assert(() => {
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DebugOverflowIndicatorMixin.paintOverflowIndicator(this, context, offset, _overflowContainerRect,
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_overflowChildRect);
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return true;
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});
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}
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}
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public class RenderSizedOverflowBox : RenderAligningShiftedBox {
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public RenderSizedOverflowBox(
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RenderBox child = null,
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Size requestedSize = null,
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Alignment alignment = null
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) : base(alignment, child) {
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_requestedSize = requestedSize;
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}
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public Size requestedSize {
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get { return _requestedSize; }
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set {
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if (_requestedSize == value) {
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return;
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}
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_requestedSize = value;
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markNeedsLayout();
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}
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}
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public Size _requestedSize;
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protected internal override float computeMinIntrinsicWidth(float height) {
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return _requestedSize.width;
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}
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protected internal override float computeMaxIntrinsicWidth(float height) {
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return _requestedSize.width;
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}
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protected internal override float computeMinIntrinsicHeight(float width) {
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return _requestedSize.height;
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}
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protected internal override float computeMaxIntrinsicHeight(float width) {
|
|
return _requestedSize.height;
|
|
}
|
|
|
|
protected override float? computeDistanceToActualBaseline(TextBaseline baseline) {
|
|
if (child != null) {
|
|
return child.getDistanceToActualBaseline(baseline);
|
|
}
|
|
|
|
return base.computeDistanceToActualBaseline(baseline);
|
|
}
|
|
|
|
protected override void performLayout() {
|
|
size = constraints.constrain(_requestedSize);
|
|
if (child != null) {
|
|
child.layout(constraints);
|
|
alignChild();
|
|
}
|
|
}
|
|
}
|
|
|
|
public class RenderFractionallySizedOverflowBox : RenderAligningShiftedBox {
|
|
public RenderFractionallySizedOverflowBox(
|
|
RenderBox child = null,
|
|
float? widthFactor = null,
|
|
float? heightFactor = null,
|
|
Alignment alignment = null
|
|
) : base(alignment, child) {
|
|
_widthFactor = widthFactor;
|
|
_heightFactor = heightFactor;
|
|
}
|
|
|
|
public float? widthFactor {
|
|
get { return _widthFactor; }
|
|
set {
|
|
if (_widthFactor == value) {
|
|
return;
|
|
}
|
|
|
|
_widthFactor = value;
|
|
markNeedsLayout();
|
|
}
|
|
}
|
|
|
|
public float? _widthFactor;
|
|
|
|
public float? heightFactor {
|
|
get { return _heightFactor; }
|
|
set {
|
|
if (_heightFactor == value) {
|
|
return;
|
|
}
|
|
|
|
_heightFactor = value;
|
|
markNeedsLayout();
|
|
}
|
|
}
|
|
|
|
public float? _heightFactor;
|
|
|
|
public BoxConstraints _getInnerConstraints(BoxConstraints constraints) {
|
|
float minWidth = constraints.minWidth;
|
|
float maxWidth = constraints.maxWidth;
|
|
if (_widthFactor != null) {
|
|
float width = maxWidth * _widthFactor.Value;
|
|
minWidth = width;
|
|
maxWidth = width;
|
|
}
|
|
|
|
float minHeight = constraints.minHeight;
|
|
float maxHeight = constraints.maxHeight;
|
|
if (_heightFactor != null) {
|
|
float height = maxHeight * _heightFactor.Value;
|
|
minHeight = height;
|
|
maxHeight = height;
|
|
}
|
|
|
|
return new BoxConstraints(
|
|
minWidth: minWidth,
|
|
maxWidth: maxWidth,
|
|
minHeight: minHeight,
|
|
maxHeight: maxHeight
|
|
);
|
|
}
|
|
|
|
protected internal override float computeMinIntrinsicWidth(float height) {
|
|
float result;
|
|
if (child == null) {
|
|
result = base.computeMinIntrinsicWidth(height);
|
|
}
|
|
else {
|
|
result = child.getMinIntrinsicWidth(height * (_heightFactor ?? 1.0f));
|
|
}
|
|
|
|
return result / (_widthFactor ?? 1.0f);
|
|
}
|
|
|
|
protected internal override float computeMaxIntrinsicWidth(float height) {
|
|
float result;
|
|
if (child == null) {
|
|
result = base.computeMaxIntrinsicWidth(height);
|
|
}
|
|
else {
|
|
result = child.getMaxIntrinsicWidth(height * (_heightFactor ?? 1.0f));
|
|
}
|
|
|
|
return result / (_widthFactor ?? 1.0f);
|
|
}
|
|
|
|
protected internal override float computeMinIntrinsicHeight(float width) {
|
|
float result;
|
|
if (child == null) {
|
|
result = base.computeMinIntrinsicHeight(width);
|
|
}
|
|
else {
|
|
result = child.getMinIntrinsicHeight(width * (_widthFactor ?? 1.0f));
|
|
}
|
|
|
|
return result / (_heightFactor ?? 1.0f);
|
|
}
|
|
|
|
protected internal override float computeMaxIntrinsicHeight(float width) {
|
|
float result;
|
|
if (child == null) {
|
|
result = base.computeMaxIntrinsicHeight(width);
|
|
}
|
|
else {
|
|
result = child.getMaxIntrinsicHeight(width * (_widthFactor ?? 1.0f));
|
|
}
|
|
|
|
return result / (_heightFactor ?? 1.0f);
|
|
}
|
|
|
|
protected override void performLayout() {
|
|
if (child != null) {
|
|
child.layout(_getInnerConstraints(constraints), parentUsesSize: true);
|
|
size = constraints.constrain(child.size);
|
|
alignChild();
|
|
}
|
|
else {
|
|
size = constraints.constrain(
|
|
_getInnerConstraints(constraints).constrain(Size.zero));
|
|
}
|
|
}
|
|
}
|
|
|
|
public abstract class SingleChildLayoutDelegate {
|
|
public SingleChildLayoutDelegate(Listenable _relayout = null) {
|
|
this._relayout = _relayout;
|
|
}
|
|
|
|
public readonly Listenable _relayout;
|
|
|
|
public virtual Size getSize(BoxConstraints constraints) {
|
|
return constraints.biggest;
|
|
}
|
|
|
|
public virtual BoxConstraints getConstraintsForChild(BoxConstraints constraints) {
|
|
return constraints;
|
|
}
|
|
|
|
public virtual Offset getPositionForChild(Size size, Size childSize) {
|
|
return Offset.zero;
|
|
}
|
|
|
|
public abstract bool shouldRelayout(SingleChildLayoutDelegate oldDelegate);
|
|
}
|
|
|
|
public class RenderCustomSingleChildLayoutBox : RenderShiftedBox {
|
|
public RenderCustomSingleChildLayoutBox(RenderBox child = null,
|
|
SingleChildLayoutDelegate layoutDelegate = null) : base(child) {
|
|
D.assert(layoutDelegate != null);
|
|
_delegate = layoutDelegate;
|
|
}
|
|
|
|
public SingleChildLayoutDelegate layoutDelegate {
|
|
get { return _delegate; }
|
|
set {
|
|
var newDelegate = value;
|
|
D.assert(newDelegate != null);
|
|
if (_delegate == newDelegate) {
|
|
return;
|
|
}
|
|
|
|
SingleChildLayoutDelegate oldDelegate = _delegate;
|
|
if (newDelegate.GetType() != oldDelegate.GetType() || newDelegate.shouldRelayout(oldDelegate)) {
|
|
markNeedsLayout();
|
|
}
|
|
|
|
_delegate = newDelegate;
|
|
if (attached) {
|
|
oldDelegate?._relayout?.removeListener(markNeedsLayout);
|
|
newDelegate?._relayout?.addListener(markNeedsLayout);
|
|
}
|
|
}
|
|
}
|
|
|
|
SingleChildLayoutDelegate _delegate;
|
|
|
|
public override void attach(object owner) {
|
|
base.attach(owner);
|
|
_delegate?._relayout?.addListener(markNeedsLayout);
|
|
}
|
|
|
|
public override void detach() {
|
|
_delegate?._relayout?.removeListener(markNeedsLayout);
|
|
base.detach();
|
|
}
|
|
|
|
Size _getSize(BoxConstraints constraints) {
|
|
return constraints.constrain(_delegate.getSize(constraints));
|
|
}
|
|
|
|
|
|
protected internal override float computeMinIntrinsicWidth(float height) {
|
|
float width = _getSize(BoxConstraints.tightForFinite(height: height)).width;
|
|
if (width.isFinite()) {
|
|
return width;
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
protected internal override float computeMaxIntrinsicWidth(float height) {
|
|
float width = _getSize(BoxConstraints.tightForFinite(height: height)).width;
|
|
if (width.isFinite()) {
|
|
return width;
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
protected internal override float computeMinIntrinsicHeight(float width) {
|
|
float height = _getSize(BoxConstraints.tightForFinite(width: width)).height;
|
|
if (height.isFinite()) {
|
|
return height;
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
protected internal override float computeMaxIntrinsicHeight(float width) {
|
|
float height = _getSize(BoxConstraints.tightForFinite(width: width)).height;
|
|
if (height.isFinite()) {
|
|
return height;
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
protected override void performLayout() {
|
|
size = _getSize(constraints);
|
|
if (child != null) {
|
|
BoxConstraints childConstraints = layoutDelegate.getConstraintsForChild(constraints);
|
|
D.assert(childConstraints.debugAssertIsValid(isAppliedConstraint: true));
|
|
child.layout(childConstraints, parentUsesSize: !childConstraints.isTight);
|
|
BoxParentData childParentData = (BoxParentData) child.parentData;
|
|
childParentData.offset = layoutDelegate.getPositionForChild(size,
|
|
childConstraints.isTight ? childConstraints.smallest : child.size);
|
|
}
|
|
}
|
|
}
|
|
|
|
public class RenderBaseline : RenderShiftedBox {
|
|
public RenderBaseline(
|
|
RenderBox child = null,
|
|
float baseline = 0.0f,
|
|
TextBaseline baselineType = TextBaseline.alphabetic
|
|
) : base(child) {
|
|
_baseline = baseline;
|
|
_baselineType = baselineType;
|
|
}
|
|
|
|
public float baseline {
|
|
get { return _baseline; }
|
|
set {
|
|
if (_baseline == value) {
|
|
return;
|
|
}
|
|
|
|
_baseline = value;
|
|
markNeedsLayout();
|
|
}
|
|
}
|
|
|
|
public float _baseline;
|
|
|
|
|
|
public TextBaseline baselineType {
|
|
get { return _baselineType; }
|
|
set {
|
|
if (_baselineType == value) {
|
|
return;
|
|
}
|
|
|
|
_baselineType = value;
|
|
markNeedsLayout();
|
|
}
|
|
}
|
|
|
|
public TextBaseline _baselineType;
|
|
|
|
protected override void performLayout() {
|
|
if (child != null) {
|
|
child.layout(constraints.loosen(), parentUsesSize: true);
|
|
float? childBaseline = child.getDistanceToBaseline(baselineType);
|
|
float actualBaseline = baseline;
|
|
float top = actualBaseline - childBaseline.Value;
|
|
var childParentData = (BoxParentData) child.parentData;
|
|
childParentData.offset = new Offset(0.0f, top);
|
|
Size childSize = child.size;
|
|
size = constraints.constrain(new Size(childSize.width, top + childSize.height));
|
|
}
|
|
else {
|
|
performResize();
|
|
}
|
|
}
|
|
}
|
|
}
|