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1855 行
61 KiB
1855 行
61 KiB
using System.Collections.Generic;
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using Unity.UIWidgets.animation;
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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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namespace Unity.UIWidgets.rendering {
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public class RenderProxyBox : RenderProxyBoxMixinRenderObjectWithChildMixinRenderBox<RenderBox> {
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public RenderProxyBox(RenderBox child = null) {
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this.child = child;
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}
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}
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public enum HitTestBehavior {
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deferToChild,
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opaque,
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translucent,
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}
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public abstract class RenderProxyBoxWithHitTestBehavior : RenderProxyBox {
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protected RenderProxyBoxWithHitTestBehavior(
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HitTestBehavior behavior = HitTestBehavior.deferToChild,
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RenderBox child = null
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) : base(child) {
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this.behavior = behavior;
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}
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public HitTestBehavior behavior;
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public override bool hitTest(HitTestResult result, Offset position = null) {
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bool hitTarget = false;
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if (this.size.contains(position)) {
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hitTarget = this.hitTestChildren(result, position: position) || this.hitTestSelf(position);
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if (hitTarget || this.behavior == HitTestBehavior.translucent) {
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result.add(new BoxHitTestEntry(this, position));
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}
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}
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return hitTarget;
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}
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protected override bool hitTestSelf(Offset position) {
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return this.behavior == HitTestBehavior.opaque;
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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 EnumProperty<HitTestBehavior>(
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"behavior", this.behavior, defaultValue: Diagnostics.kNullDefaultValue));
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}
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}
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public class RenderConstrainedBox : RenderProxyBox {
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public RenderConstrainedBox(
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RenderBox child = null,
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BoxConstraints additionalConstraints = null) : base(child) {
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D.assert(additionalConstraints != null);
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D.assert(additionalConstraints.debugAssertIsValid());
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this._additionalConstraints = additionalConstraints;
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}
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public BoxConstraints additionalConstraints {
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get { return this._additionalConstraints; }
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set {
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D.assert(value != null);
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D.assert(value.debugAssertIsValid());
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if (this._additionalConstraints == value) {
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return;
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}
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this._additionalConstraints = value;
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this.markNeedsLayout();
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}
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}
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BoxConstraints _additionalConstraints;
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protected override double computeMinIntrinsicWidth(double height) {
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if (this._additionalConstraints.hasBoundedWidth && this._additionalConstraints.hasTightWidth) {
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return this._additionalConstraints.minWidth;
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}
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double width = base.computeMinIntrinsicWidth(height);
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D.assert(width.isFinite());
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if (!this._additionalConstraints.hasInfiniteWidth) {
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return this._additionalConstraints.constrainWidth(width);
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}
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return width;
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}
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protected override double computeMaxIntrinsicWidth(double height) {
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if (this._additionalConstraints.hasBoundedWidth && this._additionalConstraints.hasTightWidth) {
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return this._additionalConstraints.minWidth;
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}
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double width = base.computeMaxIntrinsicWidth(height);
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D.assert(width.isFinite());
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if (!this._additionalConstraints.hasInfiniteWidth) {
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return this._additionalConstraints.constrainWidth(width);
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}
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return width;
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}
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protected override double computeMinIntrinsicHeight(double width) {
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if (this._additionalConstraints.hasBoundedHeight && this._additionalConstraints.hasTightHeight) {
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return this._additionalConstraints.minHeight;
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}
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double height = base.computeMinIntrinsicHeight(width);
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D.assert(height.isFinite());
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if (!this._additionalConstraints.hasInfiniteHeight) {
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return this._additionalConstraints.constrainHeight(height);
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}
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return height;
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}
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protected override double computeMaxIntrinsicHeight(double width) {
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if (this._additionalConstraints.hasBoundedHeight && this._additionalConstraints.hasTightHeight) {
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return this._additionalConstraints.minHeight;
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}
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double height = base.computeMaxIntrinsicHeight(width);
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D.assert(height.isFinite());
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if (!this._additionalConstraints.hasInfiniteHeight) {
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return this._additionalConstraints.constrainHeight(height);
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}
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return height;
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}
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protected override void performLayout() {
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if (this.child != null) {
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this.child.layout(this._additionalConstraints.enforce(this.constraints), parentUsesSize: true);
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this.size = this.child.size;
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}
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else {
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this.size = this._additionalConstraints.enforce(this.constraints).constrain(Size.zero);
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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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if (this.child == null || this.child.size.isEmpty) {
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var paint = new Paint {
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color = new Color(0x90909090)
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};
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// context.canvas.drawRect(offset & this.size, BorderWidth.zero, BorderRadius.zero, 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(
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new DiagnosticsProperty<BoxConstraints>("additionalConstraints", this.additionalConstraints));
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}
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}
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public class RenderLimitedBox : RenderProxyBox {
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public RenderLimitedBox(
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RenderBox child = null,
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double maxWidth = double.PositiveInfinity,
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double maxHeight = double.PositiveInfinity
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) : base(child) {
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D.assert(maxWidth >= 0.0);
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D.assert(maxHeight >= 0.0);
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this._maxWidth = maxWidth;
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this._maxHeight = maxHeight;
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}
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public double maxWidth {
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get { return this._maxWidth; }
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set {
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D.assert(value >= 0.0);
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if (this._maxWidth == value) {
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return;
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}
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this._maxWidth = value;
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this.markNeedsLayout();
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}
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}
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double _maxWidth;
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public double maxHeight {
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get { return this._maxHeight; }
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set {
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D.assert(value >= 0.0);
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if (this._maxHeight == value) {
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return;
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}
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this._maxHeight = value;
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this.markNeedsLayout();
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}
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}
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double _maxHeight;
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BoxConstraints _limitConstraints(BoxConstraints constraints) {
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return new BoxConstraints(
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minWidth: constraints.minWidth,
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maxWidth: constraints.hasBoundedWidth
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? constraints.maxWidth
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: constraints.constrainWidth(this.maxWidth),
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minHeight: constraints.minHeight,
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maxHeight: constraints.hasBoundedHeight
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? constraints.maxHeight
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: constraints.constrainHeight(this.maxHeight)
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);
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}
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protected override void performLayout() {
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if (this.child != null) {
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this.child.layout(this._limitConstraints(this.constraints), parentUsesSize: true);
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this.size = this.constraints.constrain(this.child.size);
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}
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else {
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this.size = this._limitConstraints(this.constraints).constrain(Size.zero);
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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 DoubleProperty("maxWidth", this.maxWidth, defaultValue: double.PositiveInfinity));
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properties.add(new DoubleProperty("maxHeight", this.maxHeight, defaultValue: double.PositiveInfinity));
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}
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}
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public class RenderAspectRatio : RenderProxyBox {
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public RenderAspectRatio(double aspectRatio, RenderBox child = null) : base(child) {
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this._aspectRatio = aspectRatio;
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}
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public double aspectRatio {
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get { return this._aspectRatio; }
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set {
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if (this._aspectRatio == value) {
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return;
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}
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this._aspectRatio = value;
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this.markNeedsLayout();
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}
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}
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double _aspectRatio;
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protected override double computeMinIntrinsicWidth(double height) {
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if (!double.IsInfinity(height)) {
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return height * this._aspectRatio;
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}
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if (this.child != null) {
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return this.child.getMinIntrinsicWidth(height);
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}
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return 0.0;
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}
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protected override double computeMaxIntrinsicWidth(double height) {
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if (!double.IsInfinity(height)) {
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return height * this._aspectRatio;
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}
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if (this.child != null) {
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return this.child.getMaxIntrinsicWidth(height);
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}
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return 0.0;
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}
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protected override double computeMinIntrinsicHeight(double width) {
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if (!double.IsInfinity(width)) {
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return width / this._aspectRatio;
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}
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if (this.child != null) {
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return this.child.getMinIntrinsicHeight(width);
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}
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return 0.0;
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}
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protected override double computeMaxIntrinsicHeight(double width) {
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if (!double.IsInfinity(width)) {
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return width / this._aspectRatio;
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}
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if (this.child != null) {
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return this.child.getMaxIntrinsicHeight(width);
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}
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return 0.0;
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}
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Size _applyAspectRatio(BoxConstraints constraints) {
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D.assert(constraints.debugAssertIsValid());
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if (constraints.isTight) {
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return constraints.smallest;
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}
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double width = constraints.maxWidth;
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double height = width / this._aspectRatio;
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if (width > constraints.maxWidth) {
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width = constraints.maxWidth;
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height = width / this._aspectRatio;
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}
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if (height > constraints.maxHeight) {
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height = constraints.maxHeight;
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width = height * this._aspectRatio;
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}
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if (width < constraints.minWidth) {
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width = constraints.minWidth;
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height = width / this._aspectRatio;
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}
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if (height < constraints.minHeight) {
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height = constraints.minHeight;
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width = height * this._aspectRatio;
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}
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return constraints.constrain(new Size(width, height));
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}
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protected override void performLayout() {
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this.size = this._applyAspectRatio(this.constraints);
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if (this.child != null) {
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this.child.layout(BoxConstraints.tight(this.size));
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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 DoubleProperty("aspectRatio", this.aspectRatio));
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}
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}
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public class RenderOpacity : RenderProxyBox {
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public RenderOpacity(double opacity = 1.0, RenderBox child = null) : base(child) {
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D.assert(opacity >= 0.0 && opacity <= 1.0);
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this._opacity = opacity;
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this._alpha = _getAlphaFromOpacity(opacity);
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}
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protected override bool alwaysNeedsCompositing {
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get { return this.child != null && (this._alpha != 0 && this._alpha != 255); }
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}
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int _alpha;
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internal static int _getAlphaFromOpacity(double opacity) {
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return (opacity * 255).round();
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}
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double _opacity;
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public double opacity {
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get { return this._opacity; }
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set {
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D.assert(value >= 0.0 && value <= 1.0);
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if (this._opacity == value) {
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return;
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}
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bool didNeedCompositing = this.alwaysNeedsCompositing;
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this._opacity = value;
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this._alpha = _getAlphaFromOpacity(this._opacity);
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if (didNeedCompositing != this.alwaysNeedsCompositing) {
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this.markNeedsCompositingBitsUpdate();
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}
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this.markNeedsPaint();
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}
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}
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public override void paint(PaintingContext context, Offset offset) {
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if (this.child != null) {
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if (this._alpha == 0) {
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return;
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}
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}
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if (this._alpha == 255) {
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context.paintChild(this.child, offset);
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return;
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}
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D.assert(this.needsCompositing);
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context.pushOpacity(offset, this._alpha, base.paint);
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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 DoubleProperty("opacity", this.opacity));
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}
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}
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public class RenderAnimatedOpacity : RenderProxyBox {
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public RenderAnimatedOpacity(
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Animation<double> opacity = null,
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RenderBox child = null
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) : base(child) {
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D.assert(opacity != null);
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this.opacity = opacity;
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}
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int _alpha;
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protected override bool alwaysNeedsCompositing {
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get { return this.child != null && this._currentlyNeedsCompositing; }
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}
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bool _currentlyNeedsCompositing;
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Animation<double> _opacity;
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public Animation<double> opacity {
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get { return this._opacity; }
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set {
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D.assert(value != null);
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if (this._opacity == value) {
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return;
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}
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if (this.attached && this._opacity != null) {
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this._opacity.removeListener(this._updateOpacity);
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}
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this._opacity = value;
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if (this.attached) {
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this._opacity.addListener(this._updateOpacity);
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}
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this._updateOpacity();
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}
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}
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public override void attach(object owner) {
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base.attach(owner);
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this._opacity.addListener(this._updateOpacity);
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this._updateOpacity(); // in case it changed while we weren't listening
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}
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public override void detach() {
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this._opacity.removeListener(this._updateOpacity);
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base.detach();
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}
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public void _updateOpacity() {
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var oldAlpha = this._alpha;
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this._alpha = RenderOpacity._getAlphaFromOpacity(this._opacity.value.clamp(0.0, 1.0));
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if (oldAlpha != this._alpha) {
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bool didNeedCompositing = this._currentlyNeedsCompositing;
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this._currentlyNeedsCompositing = this._alpha > 0 && this._alpha < 255;
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if (this.child != null && didNeedCompositing != this._currentlyNeedsCompositing) {
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this.markNeedsCompositingBitsUpdate();
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}
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this.markNeedsPaint();
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}
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}
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public override void paint(PaintingContext context, Offset offset) {
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if (this.child != null) {
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if (this._alpha == 0) {
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return;
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}
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if (this._alpha == 255) {
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context.paintChild(this.child, offset);
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return;
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}
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D.assert(this.needsCompositing);
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context.pushOpacity(offset, this._alpha, base.paint);
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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<Animation<double>>("opacity", this.opacity));
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}
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}
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public abstract class CustomClipper<T> {
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public CustomClipper(Listenable reclip = null) {
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this._reclip = reclip;
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}
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public readonly Listenable _reclip;
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public abstract T getClip(Size size);
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public Rect getApproximateClipRect(Size size) {
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return Offset.zero & size;
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}
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public abstract bool shouldReclip(CustomClipper<T> oldClipper);
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public string toString() {
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return this.GetType() + "";
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}
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}
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public class ShapeBorderClipper : CustomClipper<Path> {
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public ShapeBorderClipper(
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ShapeBorder shape = null) {
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D.assert(shape != null);
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this.shape = shape;
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}
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public readonly ShapeBorder shape;
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public override Path getClip(Size size) {
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return this.shape.getOuterPath(Offset.zero & size);
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}
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public override bool shouldReclip(CustomClipper<Path> oldClipper) {
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if (oldClipper.GetType() != this.GetType()) {
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return true;
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}
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ShapeBorderClipper typedOldClipper = (ShapeBorderClipper) oldClipper;
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return typedOldClipper.shape != this.shape;
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}
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}
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public abstract class _RenderCustomClip<T> : RenderProxyBox where T : class {
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protected _RenderCustomClip(
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RenderBox child = null,
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CustomClipper<T> clipper = null,
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Clip clipBehavior = Clip.antiAlias) : base(child: child) {
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this.clipBehavior = clipBehavior;
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this._clipper = clipper;
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}
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public CustomClipper<T> clipper {
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get { return this._clipper; }
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set {
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if (this._clipper == value) {
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return;
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}
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CustomClipper<T> oldClipper = this._clipper;
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this._clipper = value;
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D.assert(value != null || oldClipper != null);
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if (value == null || oldClipper == null ||
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value.GetType() != oldClipper.GetType() ||
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value.shouldReclip(oldClipper)) {
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this._markNeedsClip();
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}
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if (this.attached) {
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oldClipper?._reclip?.removeListener(this._markNeedsClip);
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value?._reclip?.addListener(this._markNeedsClip);
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}
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}
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}
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protected CustomClipper<T> _clipper;
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|
|
public override void attach(object owner) {
|
|
base.attach(owner);
|
|
this._clipper?._reclip?.addListener(this._markNeedsClip);
|
|
}
|
|
|
|
public override void detach() {
|
|
this._clipper?._reclip?.removeListener(this._markNeedsClip);
|
|
base.detach();
|
|
}
|
|
|
|
protected void _markNeedsClip() {
|
|
this._clip = null;
|
|
this.markNeedsPaint();
|
|
}
|
|
|
|
protected abstract T _defaultClip { get; }
|
|
protected T _clip;
|
|
|
|
public readonly Clip clipBehavior;
|
|
|
|
protected override void performLayout() {
|
|
Size oldSize = this.hasSize ? this.size : null;
|
|
base.performLayout();
|
|
if (oldSize != this.size) {
|
|
this._clip = null;
|
|
}
|
|
}
|
|
|
|
protected void _updateClip() {
|
|
this._clip = this._clip ?? this._clipper?.getClip(this.size) ?? this._defaultClip;
|
|
}
|
|
|
|
public override Rect describeApproximatePaintClip(RenderObject child) {
|
|
return this._clipper?.getApproximateClipRect(this.size) ?? Offset.zero & this.size;
|
|
}
|
|
|
|
Paint _debugPaint;
|
|
TextPainter _debugText;
|
|
|
|
protected override void debugPaintSize(PaintingContext context, Offset offset) {
|
|
D.assert(() => {
|
|
// if (this._debugPaint == null) {
|
|
// this._debugPaint = new Paint();
|
|
// this._debugPaint.shader = Gradient.linear(
|
|
// new Offset(0.0, 0.0),
|
|
// new Offset(10.0, 10.0),
|
|
// new Color(0x00000000),
|
|
// new Color(0xFFFF00FF),
|
|
// TileMode.repeated);
|
|
// this._debugPaint.strokeWidth = 2.0;
|
|
// this._debugPaint.style = PaintingStyle.stroke;
|
|
// }
|
|
// if (this._debugText == null) {
|
|
// this._debugText = new TextPainter(
|
|
// text: new TextSpan(
|
|
// text: "x",
|
|
// style: new TextStyle(
|
|
// color: new Color(0xFFFF00FF),
|
|
// fontSize: 14.0)
|
|
// ));
|
|
// this._debugText.layout();
|
|
// }
|
|
return true;
|
|
});
|
|
}
|
|
}
|
|
|
|
public abstract class _RenderPhysicalModelBase<T> : _RenderCustomClip<T> where T : class {
|
|
public _RenderPhysicalModelBase(
|
|
RenderBox child = null,
|
|
double? elevation = null,
|
|
Color color = null,
|
|
Color shadowColor = null,
|
|
Clip clipBehavior = Clip.none,
|
|
CustomClipper<T> clipper = null
|
|
) : base(child: child, clipBehavior: clipBehavior, clipper: clipper) {
|
|
D.assert(elevation != null);
|
|
D.assert(color != null);
|
|
D.assert(shadowColor != null);
|
|
this._elevation = elevation ?? 0.0;
|
|
this._color = color;
|
|
this._shadowColor = shadowColor;
|
|
}
|
|
|
|
public double elevation {
|
|
get { return this._elevation; }
|
|
set {
|
|
if (this.elevation == value) {
|
|
return;
|
|
}
|
|
|
|
bool didNeedCompositing = this.alwaysNeedsCompositing;
|
|
this._elevation = value;
|
|
if (didNeedCompositing != this.alwaysNeedsCompositing) {
|
|
this.markNeedsCompositingBitsUpdate();
|
|
}
|
|
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
double _elevation;
|
|
|
|
public Color shadowColor {
|
|
get { return this._shadowColor; }
|
|
set {
|
|
D.assert(value != null);
|
|
if (this.shadowColor == value) {
|
|
return;
|
|
}
|
|
|
|
this._shadowColor = value;
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
Color _shadowColor;
|
|
|
|
public Color color {
|
|
get { return this._color; }
|
|
set {
|
|
D.assert(value != null);
|
|
if (this.color == value) {
|
|
return;
|
|
}
|
|
|
|
this._color = value;
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
Color _color;
|
|
|
|
static Paint _transparentPaint {
|
|
get { return new Paint {color = new Color(0x00000000)}; }
|
|
}
|
|
|
|
protected override bool alwaysNeedsCompositing {
|
|
get { return this._elevation != 0.0; }
|
|
}
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder description) {
|
|
base.debugFillProperties(description);
|
|
description.add(new DoubleProperty("elevation", this.elevation));
|
|
description.add(new DiagnosticsProperty<Color>("color", this.color));
|
|
description.add(new DiagnosticsProperty<Color>("shadowColor", this.shadowColor));
|
|
}
|
|
}
|
|
|
|
public class RenderPhysicalModel : _RenderPhysicalModelBase<RRect> {
|
|
public RenderPhysicalModel(
|
|
RenderBox child = null,
|
|
BoxShape shape = BoxShape.rectangle,
|
|
Clip clipBehavior = Clip.none,
|
|
BorderRadius borderRadius = null,
|
|
double elevation = 0.0,
|
|
Color color = null,
|
|
Color shadowColor = null
|
|
) : base(clipBehavior: clipBehavior, child: child, elevation: elevation, color: color,
|
|
shadowColor: shadowColor ?? new Color(0xFF000000)) {
|
|
D.assert(color != null);
|
|
this._shape = shape;
|
|
this._borderRadius = borderRadius;
|
|
}
|
|
|
|
public BoxShape shape {
|
|
get { return this._shape; }
|
|
set {
|
|
if (this.shape == value) {
|
|
return;
|
|
}
|
|
|
|
this._shape = value;
|
|
this._markNeedsClip();
|
|
}
|
|
}
|
|
|
|
BoxShape _shape;
|
|
|
|
public BorderRadius borderRadius {
|
|
get { return this._borderRadius; }
|
|
set {
|
|
if (this.borderRadius == value) {
|
|
return;
|
|
}
|
|
|
|
this._borderRadius = value;
|
|
this._markNeedsClip();
|
|
}
|
|
}
|
|
|
|
BorderRadius _borderRadius;
|
|
|
|
protected override RRect _defaultClip {
|
|
get {
|
|
D.assert(this.hasSize);
|
|
switch (this._shape) {
|
|
case BoxShape.rectangle:
|
|
return (this.borderRadius ?? BorderRadius.zero).toRRect(Offset.zero & this.size);
|
|
case BoxShape.circle:
|
|
Rect rect = Offset.zero & this.size;
|
|
return RRect.fromRectXY(rect, rect.width / 2, rect.height / 2);
|
|
}
|
|
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public override bool hitTest(HitTestResult result, Offset position = null) {
|
|
if (this._clipper != null) {
|
|
this._updateClip();
|
|
D.assert(this._clip != null);
|
|
if (!this._clip.contains(position)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return base.hitTest(result, position: position);
|
|
}
|
|
|
|
//todo:xingwei.zhu: implementation shadow + compositeLayer
|
|
public override void paint(PaintingContext context, Offset offset) {
|
|
if (this.child != null) {
|
|
this._updateClip();
|
|
RRect offsetRRect = this._clip.shift(offset);
|
|
Rect offsetBounds = offsetRRect.outerRect;
|
|
Path offsetRRectAsPath = new Path();
|
|
offsetRRectAsPath.addRRect(offsetRRect);
|
|
|
|
Canvas canvas = context.canvas;
|
|
if (this.elevation != 0.0) {
|
|
//draw Shadow
|
|
/*canvas.drawRect(
|
|
offsetBounds.inflate(20.0),
|
|
_RenderPhysicalModelBase<RRect>._transparentPaint
|
|
);
|
|
canvas.drawShadow(
|
|
offsetRRectAsPath,
|
|
this.shadowColor,
|
|
this.elevation,
|
|
this.color.alpha != 0xFF
|
|
);*/
|
|
}
|
|
|
|
Paint paint = new Paint {color = this.color};
|
|
canvas.drawRRect(offsetRRect, paint);
|
|
context.clipRRectAndPaint(offsetRRect, this.clipBehavior, offsetBounds,
|
|
() => base.paint(context, offset));
|
|
D.assert(context.canvas == canvas, "canvas changed even though needsCompositing was false");
|
|
}
|
|
}
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder description) {
|
|
base.debugFillProperties(description);
|
|
description.add(new DiagnosticsProperty<BoxShape>("shape", this.shape));
|
|
description.add(new DiagnosticsProperty<BorderRadius>("borderRadius", this.borderRadius));
|
|
}
|
|
}
|
|
|
|
|
|
public class RenderPhysicalShape : _RenderPhysicalModelBase<Path> {
|
|
public RenderPhysicalShape(
|
|
RenderBox child = null,
|
|
CustomClipper<Path> clipper = null,
|
|
Clip clipBehavior = Clip.none,
|
|
double elevation = 0.0,
|
|
Color color = null,
|
|
Color shadowColor = null
|
|
) : base(child: child,
|
|
elevation: elevation,
|
|
color: color,
|
|
shadowColor: shadowColor ?? new Color(0xFF000000),
|
|
clipper: clipper,
|
|
clipBehavior: clipBehavior) {
|
|
D.assert(clipper != null);
|
|
D.assert(color != null);
|
|
}
|
|
|
|
protected override Path _defaultClip {
|
|
get {
|
|
Path path = new Path();
|
|
path.addRect(Offset.zero & this.size);
|
|
return path;
|
|
}
|
|
}
|
|
|
|
public override bool hitTest(HitTestResult result, Offset position = null) {
|
|
if (this._clipper != null) {
|
|
this._updateClip();
|
|
D.assert(this._clip != null);
|
|
if (!this._clip.contains(position)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return base.hitTest(result, position: position);
|
|
}
|
|
|
|
//todo:xingwei.zhu: implementation shadow + compositeLayer
|
|
public override void paint(PaintingContext context, Offset offset) {
|
|
if (this.child != null) {
|
|
this._updateClip();
|
|
Rect offsetBounds = offset & this.size;
|
|
Path offsetPath = new Path();
|
|
offsetPath.addPath(this._clip, offset);
|
|
|
|
Canvas canvas = context.canvas;
|
|
// if (this.elevation != 0.0 && paintShadows) {
|
|
// canvas.drawRect(
|
|
// offsetBounds.inflate(20.0),
|
|
// _RenderPhysicalModelBase<Path>._transparentPaint
|
|
// );
|
|
// canvas.drawShadow(
|
|
// offsetPath,
|
|
// this.shadowColor,
|
|
// this.elevation,
|
|
// this.color.alpha != 0xFF,
|
|
// );
|
|
// }
|
|
Paint paint = new Paint {color = this.color, style = PaintingStyle.fill};
|
|
canvas.drawPath(offsetPath, paint);
|
|
context.clipPathAndPaint(offsetPath, this.clipBehavior,
|
|
offsetBounds, () => base.paint(context, offset));
|
|
D.assert(context.canvas == canvas, "canvas changed even though needsCompositing was false");
|
|
}
|
|
}
|
|
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder description) {
|
|
base.debugFillProperties(description);
|
|
description.add(new DiagnosticsProperty<CustomClipper<Path>>("clipper", this.clipper));
|
|
}
|
|
}
|
|
|
|
public enum DecorationPosition {
|
|
background,
|
|
foreground,
|
|
}
|
|
|
|
public class RenderDecoratedBox : RenderProxyBox {
|
|
public RenderDecoratedBox(
|
|
Decoration decoration = null,
|
|
DecorationPosition position = DecorationPosition.background,
|
|
ImageConfiguration configuration = null,
|
|
RenderBox child = null
|
|
) : base(child) {
|
|
D.assert(decoration != null);
|
|
this._decoration = decoration;
|
|
this._position = position;
|
|
this._configuration = configuration ?? ImageConfiguration.empty;
|
|
}
|
|
|
|
BoxPainter _painter;
|
|
|
|
public Decoration decoration {
|
|
get { return this._decoration; }
|
|
set {
|
|
D.assert(value != null);
|
|
if (value == this._decoration) {
|
|
return;
|
|
}
|
|
|
|
if (this._painter != null) {
|
|
this._painter.Dispose();
|
|
this._painter = null;
|
|
}
|
|
|
|
this._decoration = value;
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
Decoration _decoration;
|
|
|
|
public DecorationPosition position {
|
|
get { return this._position; }
|
|
set {
|
|
if (value == this._position) {
|
|
return;
|
|
}
|
|
|
|
this._position = value;
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
DecorationPosition _position;
|
|
|
|
public ImageConfiguration configuration {
|
|
get { return this._configuration; }
|
|
set {
|
|
D.assert(value != null);
|
|
if (value == this._configuration) {
|
|
return;
|
|
}
|
|
|
|
this._configuration = value;
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
ImageConfiguration _configuration;
|
|
|
|
public override void detach() {
|
|
if (this._painter != null) {
|
|
this._painter.Dispose();
|
|
this._painter = null;
|
|
}
|
|
|
|
base.detach();
|
|
this.markNeedsPaint();
|
|
}
|
|
|
|
protected override bool hitTestSelf(Offset position) {
|
|
return this._decoration.hitTest(this.size, position);
|
|
}
|
|
|
|
public override void paint(PaintingContext context, Offset offset) {
|
|
this._painter = this._painter ?? this._decoration.createBoxPainter(this.markNeedsPaint);
|
|
var filledConfiguration = this.configuration.copyWith(size: this.size);
|
|
|
|
if (this.position == DecorationPosition.background) {
|
|
int debugSaveCount = 0;
|
|
D.assert(() => {
|
|
debugSaveCount = context.canvas.getSaveCount();
|
|
return true;
|
|
});
|
|
|
|
this._painter.paint(context.canvas, offset, filledConfiguration);
|
|
|
|
D.assert(() => {
|
|
if (debugSaveCount != context.canvas.getSaveCount()) {
|
|
throw new UIWidgetsError(
|
|
this._decoration.GetType() + " painter had mismatching save and restore calls.\n" +
|
|
"Before painting the decoration, the canvas save count was $debugSaveCount. " +
|
|
"After painting it, the canvas save count was " + context.canvas.getSaveCount() + ". " +
|
|
"Every call to save() or saveLayer() must be matched by a call to restore().\n" +
|
|
"The decoration was:\n" +
|
|
" " + this.decoration + "\n" +
|
|
"The painter was:\n" +
|
|
" " + this._painter
|
|
);
|
|
}
|
|
|
|
return true;
|
|
});
|
|
|
|
if (this.decoration.isComplex) {
|
|
context.setIsComplexHint();
|
|
}
|
|
}
|
|
|
|
base.paint(context, offset);
|
|
|
|
if (this.position == DecorationPosition.foreground) {
|
|
this._painter.paint(context.canvas, offset, filledConfiguration);
|
|
if (this.decoration.isComplex) {
|
|
context.setIsComplexHint();
|
|
}
|
|
}
|
|
}
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
|
|
base.debugFillProperties(properties);
|
|
properties.add(this._decoration.toDiagnosticsNode(name: "decoration"));
|
|
properties.add(new DiagnosticsProperty<ImageConfiguration>("configuration", this.configuration));
|
|
}
|
|
}
|
|
|
|
public class RenderTransform : RenderProxyBox {
|
|
public RenderTransform(
|
|
Matrix3 transform,
|
|
Offset origin = null,
|
|
Alignment alignment = null,
|
|
bool transformHitTests = true,
|
|
RenderBox child = null
|
|
) : base(child) {
|
|
this.transform = transform;
|
|
this.origin = origin;
|
|
this.alignment = alignment;
|
|
this.transformHitTests = transformHitTests;
|
|
}
|
|
|
|
public Offset origin {
|
|
get { return this._origin; }
|
|
set {
|
|
if (this._origin == value) {
|
|
return;
|
|
}
|
|
|
|
this._origin = value;
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
Offset _origin;
|
|
|
|
public Alignment alignment {
|
|
get { return this._alignment; }
|
|
set {
|
|
if (this._alignment == value) {
|
|
return;
|
|
}
|
|
|
|
this._alignment = value;
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
Alignment _alignment;
|
|
|
|
public bool transformHitTests;
|
|
|
|
public Matrix3 transform {
|
|
set {
|
|
if (this._transform == value) {
|
|
return;
|
|
}
|
|
|
|
this._transform = value;
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
Matrix3 _transform;
|
|
|
|
public void setIdentity() {
|
|
this._transform = Matrix3.I();
|
|
this.markNeedsPaint();
|
|
}
|
|
|
|
public void rotateX(double degrees) {
|
|
//2D, do nothing
|
|
}
|
|
|
|
public void rotateY(double degrees) {
|
|
//2D, do nothing
|
|
}
|
|
|
|
public void rotateZ(double degrees) {
|
|
this._transform.preRotate((float) degrees);
|
|
this.markNeedsPaint();
|
|
}
|
|
|
|
public void translate(double x, double y = 0.0, double z = 0.0) {
|
|
this._transform.preTranslate((float) x, (float) y);
|
|
this.markNeedsPaint();
|
|
}
|
|
|
|
public void scale(double x, double y, double z) {
|
|
this._transform.preScale((float) x, (float) y);
|
|
this.markNeedsPaint();
|
|
}
|
|
|
|
Matrix3 _effectiveTransform {
|
|
get {
|
|
Alignment resolvedAlignment = this.alignment;
|
|
if (this._origin == null && resolvedAlignment == null) {
|
|
return this._transform;
|
|
}
|
|
|
|
var result = Matrix3.I();
|
|
if (this._origin != null) {
|
|
result.preTranslate((float) this._origin.dx, (float) this._origin.dy);
|
|
}
|
|
|
|
Offset translation = null;
|
|
if (resolvedAlignment != null) {
|
|
translation = resolvedAlignment.alongSize(this.size);
|
|
result.preTranslate((float) translation.dx, (float) translation.dy);
|
|
}
|
|
|
|
result.preConcat(this._transform);
|
|
|
|
if (resolvedAlignment != null) {
|
|
result.preTranslate((float) -translation.dx, (float) -translation.dy);
|
|
}
|
|
|
|
if (this._origin != null) {
|
|
result.preTranslate((float) -this._origin.dx, (float) -this._origin.dy);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
}
|
|
|
|
public override bool hitTest(HitTestResult result, Offset position = null) {
|
|
return this.hitTestChildren(result, position: position);
|
|
}
|
|
|
|
protected override bool hitTestChildren(HitTestResult result, Offset position = null) {
|
|
if (this.transformHitTests) {
|
|
var transform = this._effectiveTransform;
|
|
var inverse = Matrix3.I();
|
|
var invertible = transform.invert(inverse);
|
|
|
|
if (!invertible) {
|
|
return false;
|
|
}
|
|
|
|
position = inverse.mapPoint(position);
|
|
}
|
|
|
|
return base.hitTestChildren(result, position: position);
|
|
}
|
|
|
|
public override void paint(PaintingContext context, Offset offset) {
|
|
if (this.child != null) {
|
|
var transform = this._effectiveTransform;
|
|
Offset childOffset = transform.getAsTranslation();
|
|
|
|
if (childOffset == null) {
|
|
context.pushTransform(this.needsCompositing, offset, transform, base.paint);
|
|
}
|
|
else {
|
|
base.paint(context, offset + childOffset);
|
|
}
|
|
}
|
|
}
|
|
|
|
public override void applyPaintTransform(RenderObject child, Matrix3 transform) {
|
|
transform.preConcat(this._effectiveTransform);
|
|
}
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
|
|
base.debugFillProperties(properties);
|
|
properties.add(new DiagnosticsProperty<Matrix3>("transform matrix", this._transform));
|
|
properties.add(new DiagnosticsProperty<Offset>("origin", this.origin));
|
|
properties.add(new DiagnosticsProperty<Alignment>("alignment", this.alignment));
|
|
properties.add(new DiagnosticsProperty<bool>("transformHitTests", this.transformHitTests));
|
|
}
|
|
}
|
|
|
|
public class RenderFractionalTranslation : RenderProxyBox {
|
|
public RenderFractionalTranslation(
|
|
Offset translation = null,
|
|
bool transformHitTests = true,
|
|
RenderBox child = null
|
|
) : base(child: child) {
|
|
D.assert(translation != null);
|
|
this._translation = translation;
|
|
this.transformHitTests = transformHitTests;
|
|
}
|
|
|
|
public Offset translation {
|
|
get { return this._translation; }
|
|
|
|
set {
|
|
D.assert(value != null);
|
|
if (this._translation == value) {
|
|
return;
|
|
}
|
|
|
|
this._translation = value;
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
Offset _translation;
|
|
|
|
public override bool hitTest(HitTestResult result, Offset position) {
|
|
return this.hitTestChildren(result, position: position);
|
|
}
|
|
|
|
public bool transformHitTests;
|
|
|
|
protected override bool hitTestChildren(HitTestResult result, Offset position) {
|
|
D.assert(!this.debugNeedsLayout);
|
|
if (this.transformHitTests) {
|
|
position = new Offset(
|
|
position.dx - this.translation.dx * this.size.width,
|
|
position.dy - this.translation.dy * this.size.height
|
|
);
|
|
}
|
|
|
|
return base.hitTestChildren(result, position: position);
|
|
}
|
|
|
|
public override void paint(PaintingContext context, Offset offset) {
|
|
D.assert(!this.debugNeedsLayout);
|
|
if (this.child != null) {
|
|
base.paint(context, new Offset(
|
|
offset.dx + this.translation.dx * this.size.width,
|
|
offset.dy + this.translation.dy * this.size.height
|
|
));
|
|
}
|
|
}
|
|
|
|
public override void applyPaintTransform(RenderObject child, Matrix3 transform) {
|
|
transform.preTranslate((float) (this.translation.dx * this.size.width),
|
|
(float) (this.translation.dy * this.size.height));
|
|
}
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
|
|
base.debugFillProperties(properties);
|
|
properties.add(new DiagnosticsProperty<Offset>("translation", this.translation));
|
|
properties.add(new DiagnosticsProperty<bool>("transformHitTests", this.transformHitTests));
|
|
}
|
|
}
|
|
|
|
public delegate void PointerDownEventListener(PointerDownEvent evt);
|
|
|
|
public delegate void PointerMoveEventListener(PointerMoveEvent evt);
|
|
|
|
public delegate void PointerUpEventListener(PointerUpEvent evt);
|
|
|
|
public delegate void PointerCancelEventListener(PointerCancelEvent evt);
|
|
|
|
public delegate void PointerHoverEventListener(PointerHoverEvent evt);
|
|
|
|
public delegate void PointerEnterEventListener(PointerEnterEvent evt);
|
|
|
|
public delegate void PointerLeaveEventListener(PointerLeaveEvent evt);
|
|
|
|
public class RenderPointerListener : RenderProxyBoxWithHitTestBehavior {
|
|
public RenderPointerListener(
|
|
PointerDownEventListener onPointerDown = null,
|
|
PointerMoveEventListener onPointerMove = null,
|
|
PointerUpEventListener onPointerUp = null,
|
|
PointerCancelEventListener onPointerCancel = null,
|
|
PointerHoverEventListener onPointerHover = null,
|
|
PointerLeaveEventListener onPointerLeave = null,
|
|
PointerEnterEventListener onPointerEnter = null,
|
|
HitTestBehavior behavior = HitTestBehavior.deferToChild,
|
|
RenderBox child = null
|
|
) : base(behavior: behavior, child: child) {
|
|
this.onPointerDown = onPointerDown;
|
|
this.onPointerMove = onPointerMove;
|
|
this.onPointerUp = onPointerUp;
|
|
this.onPointerCancel = onPointerCancel;
|
|
this.onPointerHover = onPointerHover;
|
|
this.onPointerLeave = onPointerLeave;
|
|
this.onPointerEnter = onPointerEnter;
|
|
}
|
|
|
|
public PointerDownEventListener onPointerDown;
|
|
|
|
public PointerMoveEventListener onPointerMove;
|
|
|
|
public PointerUpEventListener onPointerUp;
|
|
|
|
public PointerCancelEventListener onPointerCancel;
|
|
|
|
public PointerHoverEventListener onPointerHover;
|
|
|
|
public PointerLeaveEventListener onPointerLeave;
|
|
|
|
public PointerEnterEventListener onPointerEnter;
|
|
|
|
protected override void performResize() {
|
|
this.size = this.constraints.biggest;
|
|
}
|
|
|
|
public override void handleEvent(PointerEvent evt, HitTestEntry entry) {
|
|
D.assert(this.debugHandleEvent(evt, entry));
|
|
|
|
if (this.onPointerDown != null && evt is PointerDownEvent) {
|
|
this.onPointerDown((PointerDownEvent) evt);
|
|
return;
|
|
}
|
|
|
|
if (this.onPointerMove != null && evt is PointerMoveEvent) {
|
|
this.onPointerMove((PointerMoveEvent) evt);
|
|
return;
|
|
}
|
|
|
|
if (this.onPointerUp != null && evt is PointerUpEvent) {
|
|
this.onPointerUp((PointerUpEvent) evt);
|
|
return;
|
|
}
|
|
|
|
if (this.onPointerCancel != null && evt is PointerCancelEvent) {
|
|
this.onPointerCancel((PointerCancelEvent) evt);
|
|
return;
|
|
}
|
|
|
|
if (this.onPointerHover != null && evt is PointerHoverEvent) {
|
|
this.onPointerHover((PointerHoverEvent) evt);
|
|
return;
|
|
}
|
|
|
|
if (this.onPointerLeave != null && evt is PointerLeaveEvent) {
|
|
this.onPointerLeave((PointerLeaveEvent) evt);
|
|
return;
|
|
}
|
|
|
|
if (this.onPointerEnter != null && evt is PointerEnterEvent) {
|
|
this.onPointerEnter((PointerEnterEvent) evt);
|
|
return;
|
|
}
|
|
}
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
|
|
base.debugFillProperties(properties);
|
|
var listeners = new List<string>();
|
|
if (this.onPointerDown != null) {
|
|
listeners.Add("down");
|
|
}
|
|
|
|
if (this.onPointerMove != null) {
|
|
listeners.Add("move");
|
|
}
|
|
|
|
if (this.onPointerUp != null) {
|
|
listeners.Add("up");
|
|
}
|
|
|
|
if (this.onPointerCancel != null) {
|
|
listeners.Add("cancel");
|
|
}
|
|
|
|
if (this.onPointerHover != null) {
|
|
listeners.Add("hover");
|
|
}
|
|
|
|
if (this.onPointerEnter != null) {
|
|
listeners.Add("enter");
|
|
}
|
|
|
|
if (this.onPointerLeave != null) {
|
|
listeners.Add("leave");
|
|
}
|
|
|
|
if (listeners.isEmpty()) {
|
|
listeners.Add("<none>");
|
|
}
|
|
|
|
properties.add(new EnumerableProperty<string>("listeners", listeners));
|
|
}
|
|
}
|
|
|
|
public class RenderRepaintBoundary : RenderProxyBox {
|
|
public RenderRepaintBoundary(
|
|
RenderBox child = null
|
|
) : base(child) {
|
|
}
|
|
|
|
public override bool isRepaintBoundary {
|
|
get { return true; }
|
|
}
|
|
|
|
public int debugSymmetricPaintCount {
|
|
get { return this._debugSymmetricPaintCount; }
|
|
}
|
|
|
|
int _debugSymmetricPaintCount = 0;
|
|
|
|
public int debugAsymmetricPaintCount {
|
|
get { return this._debugAsymmetricPaintCount; }
|
|
}
|
|
|
|
int _debugAsymmetricPaintCount = 0;
|
|
|
|
public void debugResetMetrics() {
|
|
D.assert(() => {
|
|
this._debugSymmetricPaintCount = 0;
|
|
this._debugAsymmetricPaintCount = 0;
|
|
return true;
|
|
});
|
|
}
|
|
|
|
public override void debugRegisterRepaintBoundaryPaint(bool includedParent = true, bool includedChild = false) {
|
|
D.assert(() => {
|
|
if (includedParent && includedChild) {
|
|
this._debugSymmetricPaintCount += 1;
|
|
}
|
|
else {
|
|
this._debugAsymmetricPaintCount += 1;
|
|
}
|
|
|
|
return true;
|
|
});
|
|
}
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
|
|
base.debugFillProperties(properties);
|
|
bool inReleaseMode = true;
|
|
D.assert(() => {
|
|
inReleaseMode = false;
|
|
if (this.debugSymmetricPaintCount + this.debugAsymmetricPaintCount == 0) {
|
|
properties.add(new MessageProperty("usefulness ratio", "no metrics collected yet (never painted)"));
|
|
}
|
|
else {
|
|
double fraction = (double) this.debugAsymmetricPaintCount /
|
|
(this.debugSymmetricPaintCount + this.debugAsymmetricPaintCount);
|
|
|
|
string diagnosis;
|
|
if (this.debugSymmetricPaintCount + this.debugAsymmetricPaintCount < 5) {
|
|
diagnosis = "insufficient data to draw conclusion (less than five repaints)";
|
|
}
|
|
else if (fraction > 0.9) {
|
|
diagnosis = "this is an outstandingly useful repaint boundary and should definitely be kept";
|
|
}
|
|
else if (fraction > 0.5) {
|
|
diagnosis = "this is a useful repaint boundary and should be kept";
|
|
}
|
|
else if (fraction > 0.30) {
|
|
diagnosis =
|
|
"this repaint boundary is probably useful, but maybe it would be more useful in tandem with adding more repaint boundaries elsewhere";
|
|
}
|
|
else if (fraction > 0.1) {
|
|
diagnosis = "this repaint boundary does sometimes show value, though currently not that often";
|
|
}
|
|
else if (this.debugAsymmetricPaintCount == 0) {
|
|
diagnosis = "this repaint boundary is astoundingly ineffectual and should be removed";
|
|
}
|
|
else {
|
|
diagnosis = "this repaint boundary is not very effective and should probably be removed";
|
|
}
|
|
|
|
properties.add(new PercentProperty("metrics", fraction, unit: "useful",
|
|
tooltip: this.debugSymmetricPaintCount + " bad vs " + this.debugAsymmetricPaintCount +
|
|
" good"));
|
|
properties.add(new MessageProperty("diagnosis", diagnosis));
|
|
}
|
|
|
|
return true;
|
|
});
|
|
if (inReleaseMode) {
|
|
properties.add(DiagnosticsNode.message("(run in checked mode to collect repaint boundary statistics)"));
|
|
}
|
|
}
|
|
}
|
|
|
|
public class RenderIgnorePointer : RenderProxyBox {
|
|
public RenderIgnorePointer(
|
|
RenderBox child = null,
|
|
bool ignoring = true
|
|
) : base(child) {
|
|
this._ignoring = ignoring;
|
|
}
|
|
|
|
public bool ignoring {
|
|
get { return this._ignoring; }
|
|
set {
|
|
if (value == this._ignoring) {
|
|
return;
|
|
}
|
|
|
|
this._ignoring = value;
|
|
}
|
|
}
|
|
|
|
bool _ignoring;
|
|
|
|
public override bool hitTest(HitTestResult result, Offset position = null) {
|
|
return this.ignoring ? false : base.hitTest(result, position: position);
|
|
}
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
|
|
base.debugFillProperties(properties);
|
|
properties.add(new DiagnosticsProperty<bool>("ignoring", this.ignoring));
|
|
}
|
|
}
|
|
|
|
public class RenderOffstage : RenderProxyBox {
|
|
public RenderOffstage(bool offstage = true,
|
|
RenderBox child = null) : base(child) {
|
|
this._offstage = offstage;
|
|
}
|
|
|
|
public bool offstage {
|
|
get { return this._offstage; }
|
|
|
|
set {
|
|
if (value == this._offstage) {
|
|
return;
|
|
}
|
|
|
|
this._offstage = value;
|
|
this.markNeedsLayoutForSizedByParentChange();
|
|
}
|
|
}
|
|
|
|
bool _offstage;
|
|
|
|
protected override double computeMinIntrinsicWidth(double height) {
|
|
if (this.offstage) {
|
|
return 0.0;
|
|
}
|
|
|
|
return base.computeMinIntrinsicWidth(height);
|
|
}
|
|
|
|
|
|
protected override double computeMaxIntrinsicWidth(double height) {
|
|
if (this.offstage) {
|
|
return 0.0;
|
|
}
|
|
|
|
return base.computeMaxIntrinsicWidth(height);
|
|
}
|
|
|
|
protected override double computeMinIntrinsicHeight(double width) {
|
|
if (this.offstage) {
|
|
return 0.0;
|
|
}
|
|
|
|
return base.computeMinIntrinsicHeight(width);
|
|
}
|
|
|
|
protected override double computeMaxIntrinsicHeight(double width) {
|
|
if (this.offstage) {
|
|
return 0.0;
|
|
}
|
|
|
|
return base.computeMaxIntrinsicHeight(width);
|
|
}
|
|
|
|
protected override double? computeDistanceToActualBaseline(TextBaseline baseline) {
|
|
if (this.offstage) {
|
|
return null;
|
|
}
|
|
|
|
return base.computeDistanceToActualBaseline(baseline);
|
|
}
|
|
|
|
protected override bool sizedByParent {
|
|
get { return this.offstage; }
|
|
}
|
|
|
|
protected override void performResize() {
|
|
D.assert(this.offstage);
|
|
this.size = this.constraints.smallest;
|
|
}
|
|
|
|
protected override void performLayout() {
|
|
if (this.offstage) {
|
|
this.child?.layout(this.constraints);
|
|
}
|
|
else {
|
|
base.performLayout();
|
|
}
|
|
}
|
|
|
|
public override bool hitTest(HitTestResult result, Offset position) {
|
|
return !this.offstage && base.hitTest(result, position: position);
|
|
}
|
|
|
|
public override void paint(PaintingContext context, Offset offset) {
|
|
if (this.offstage) {
|
|
return;
|
|
}
|
|
|
|
base.paint(context, offset);
|
|
}
|
|
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
|
|
base.debugFillProperties(properties);
|
|
properties.add(new DiagnosticsProperty<bool>("offstage", this.offstage));
|
|
}
|
|
|
|
|
|
public override List<DiagnosticsNode> debugDescribeChildren() {
|
|
if (this.child == null) {
|
|
return new List<DiagnosticsNode>();
|
|
}
|
|
|
|
return new List<DiagnosticsNode> {
|
|
this.child.toDiagnosticsNode(
|
|
name: "child",
|
|
style: this.offstage ? DiagnosticsTreeStyle.offstage : DiagnosticsTreeStyle.sparse
|
|
),
|
|
};
|
|
}
|
|
}
|
|
|
|
public class RenderAbsorbPointer : RenderProxyBox {
|
|
public RenderAbsorbPointer(
|
|
RenderBox child = null,
|
|
bool absorbing = true
|
|
) : base(child) {
|
|
this._absorbing = absorbing;
|
|
}
|
|
|
|
|
|
public bool absorbing {
|
|
get { return this._absorbing; }
|
|
set { this._absorbing = value; }
|
|
}
|
|
|
|
bool _absorbing;
|
|
|
|
public override bool hitTest(HitTestResult result, Offset position) {
|
|
return this.absorbing
|
|
? this.size.contains(position)
|
|
: base.hitTest(result, position: position);
|
|
}
|
|
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
|
|
base.debugFillProperties(properties);
|
|
properties.add(new DiagnosticsProperty<bool>("absorbing", this.absorbing));
|
|
}
|
|
}
|
|
|
|
public class RenderMetaData : RenderProxyBoxWithHitTestBehavior {
|
|
public RenderMetaData(
|
|
object metaData,
|
|
HitTestBehavior behavior = HitTestBehavior.deferToChild,
|
|
RenderBox child = null
|
|
) : base(behavior, child) {
|
|
this.metaData = metaData;
|
|
}
|
|
|
|
public object metaData;
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
|
|
base.debugFillProperties(properties);
|
|
properties.add(new DiagnosticsProperty<object>("metaData", this.metaData));
|
|
}
|
|
}
|
|
|
|
public class RenderLeaderLayer : RenderProxyBox {
|
|
public RenderLeaderLayer(
|
|
LayerLink link = null,
|
|
RenderBox child = null
|
|
) : base(child: child) {
|
|
D.assert(link != null);
|
|
this.link = link;
|
|
}
|
|
|
|
public LayerLink link {
|
|
get { return this._link; }
|
|
set {
|
|
D.assert(value != null);
|
|
if (this._link == value) {
|
|
return;
|
|
}
|
|
|
|
this._link = value;
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
LayerLink _link;
|
|
|
|
protected override bool alwaysNeedsCompositing {
|
|
get { return true; }
|
|
}
|
|
|
|
public override void paint(PaintingContext context, Offset offset) {
|
|
context.pushLayer(new LeaderLayer(link: this.link, offset: offset), base.paint, Offset.zero);
|
|
}
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
|
|
base.debugFillProperties(properties);
|
|
properties.add(new DiagnosticsProperty<LayerLink>("link", this.link));
|
|
}
|
|
}
|
|
|
|
|
|
class RenderFollowerLayer : RenderProxyBox {
|
|
public RenderFollowerLayer(LayerLink link,
|
|
bool showWhenUnlinked = true,
|
|
Offset offset = null,
|
|
RenderBox child = null
|
|
) : base(child) {
|
|
this.link = link;
|
|
this.showWhenUnlinked = showWhenUnlinked;
|
|
this.offset = offset;
|
|
}
|
|
|
|
public LayerLink link {
|
|
get { return this._link; }
|
|
set {
|
|
D.assert(value != null);
|
|
if (this._link == value) {
|
|
return;
|
|
}
|
|
|
|
this._link = value;
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
LayerLink _link;
|
|
|
|
public bool showWhenUnlinked {
|
|
get { return this._showWhenUnlinked; }
|
|
set {
|
|
if (this._showWhenUnlinked == value) {
|
|
return;
|
|
}
|
|
|
|
this._showWhenUnlinked = value;
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
bool _showWhenUnlinked;
|
|
|
|
public Offset offset {
|
|
get { return this._offset; }
|
|
set {
|
|
D.assert(value != null);
|
|
if (this._offset == value) {
|
|
return;
|
|
}
|
|
|
|
this._offset = value;
|
|
this.markNeedsPaint();
|
|
}
|
|
}
|
|
|
|
Offset _offset;
|
|
|
|
public override void detach() {
|
|
this._layer = null;
|
|
base.detach();
|
|
}
|
|
|
|
protected override bool alwaysNeedsCompositing {
|
|
get { return true; }
|
|
}
|
|
|
|
new FollowerLayer _layer;
|
|
|
|
Matrix3 getCurrentTransform() {
|
|
return this._layer?.getLastTransform() ?? Matrix3.I();
|
|
}
|
|
|
|
public override bool hitTest(HitTestResult result, Offset position) {
|
|
return this.hitTestChildren(result, position: position);
|
|
}
|
|
|
|
protected override bool hitTestChildren(HitTestResult result, Offset position) {
|
|
Matrix3 inverse = Matrix3.I();
|
|
if (!this.getCurrentTransform().invert(inverse)) {
|
|
return false;
|
|
}
|
|
|
|
position = inverse.mapPoint(position);
|
|
return base.hitTestChildren(result, position: position);
|
|
}
|
|
|
|
public override void paint(PaintingContext context, Offset offset) {
|
|
this._layer = new FollowerLayer(
|
|
link: this.link,
|
|
showWhenUnlinked: this.showWhenUnlinked,
|
|
linkedOffset: this.offset,
|
|
unlinkedOffset: offset
|
|
);
|
|
context.pushLayer(this._layer,
|
|
base.paint,
|
|
Offset.zero,
|
|
childPaintBounds: Rect.fromLTRB(
|
|
double.NegativeInfinity,
|
|
double.NegativeInfinity,
|
|
double.PositiveInfinity,
|
|
double.PositiveInfinity
|
|
)
|
|
);
|
|
}
|
|
|
|
public override void applyPaintTransform(RenderObject child, Matrix3 transform) {
|
|
transform.preConcat(this.getCurrentTransform());
|
|
}
|
|
|
|
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
|
|
base.debugFillProperties(properties);
|
|
properties.add(new DiagnosticsProperty<LayerLink>("link", this.link));
|
|
properties.add(new DiagnosticsProperty<bool>("showWhenUnlinked", this.showWhenUnlinked));
|
|
properties.add(new DiagnosticsProperty<Offset>("offset", this.offset));
|
|
properties.add(new TransformProperty("current transform matrix", this.getCurrentTransform()));
|
|
}
|
|
}
|
|
}
|