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update to custom_layout.cs

/siyaoH-1.17-PlatformMessage
guanghuispark 4 年前
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61d74600
共有 4 个文件被更改，包括 236 次插入 和 222 次删除
  1. 5
      com.unity.uiwidgets/Runtime/rendering/binding.cs
  2. 371
      com.unity.uiwidgets/Runtime/rendering/box.cs
  3. 80
      com.unity.uiwidgets/Runtime/rendering/custom_layout.cs
  4. 2
      com.unity.uiwidgets/Runtime/rendering/object.cs

5
com.unity.uiwidgets/Runtime/rendering/binding.cs
查看文件


instance = this;
_pipelineOwner = new PipelineOwner(
onNeedVisualUpdate: ensureVisualUpdate
// onSemanticsOwnerCreated: _handleSemanticsOwnerCreated,
// onSemanticsOwnerDisposed: _handleSemanticsOwnerDisposed,
// ..onSemanticsEnabledChanged = _handleSemanticsEnabledChanged
// ..onSemanticsAction = _handleSemanticsAction;
// _handleSemanticsEnabledChanged();
D.assert(renderView != null);
addPersistentFrameCallback(_handlePersistentFrameCallback);
initMouseTracker();

371
com.unity.uiwidgets/Runtime/rendering/box.cs
查看文件


float maxWidth = float.PositiveInfinity,
float minHeight = 0.0f,
float maxHeight = float.PositiveInfinity) {
D.assert(minWidth != null);
D.assert(maxWidth != null);
D.assert(minHeight != null);
D.assert (maxHeight != null);
this.minWidth = minWidth;
this.maxWidth = maxWidth;
this.minHeight = minHeight;

public float getMinIntrinsicWidth(float height) {
D.assert(() => {
if (height < 0.0) {
throw new UIWidgetsError(
"The height argument to getMinIntrinsicWidth was negative.\n" +
"The argument to getMinIntrinsicWidth must not be negative. " +
"If you perform computations on another height before passing it to " +
"getMinIntrinsicWidth, consider using Mathf.Max() or float.clamp() " +
"to force the value into the valid range."
throw new UIWidgetsError(new List<DiagnosticsNode> {
new ErrorSummary("The height argument to getMinIntrinsicWidth was negative."),
new ErrorDescription("The argument to getMinIntrinsicWidth must not be negative or null."),
new ErrorHint(
"If you perform computations on another height before passing it to " +
"getMinIntrinsicWidth, consider using math.max() or double.clamp() " +
"to force the value into the valid range."
)
}
);
}

public float getMaxIntrinsicWidth(float height) {
D.assert(() => {
if (height < 0.0) {
throw new UIWidgetsError(
"The height argument to getMaxIntrinsicWidth was negative.\n" +
"The argument to getMaxIntrinsicWidth must not be negative. " +
"If you perform computations on another height before passing it to " +
"getMaxIntrinsicWidth, consider using Mathf.Max() or float.clamp() " +
throw new UIWidgetsError(new List<DiagnosticsNode>{
new ErrorSummary("The height argument to getMaxIntrinsicWidth was negative."),
new ErrorDescription("The argument to getMaxIntrinsicWidth must not be negative or null."),
new ErrorHint(
"If you perform computations on another height before passing it to " +
"getMaxIntrinsicWidth, consider using math.max() or double.clamp() " +
);
)
});
return true;
});

public float getMinIntrinsicHeight(float width) {
D.assert(() => {
if (width < 0.0) {
throw new UIWidgetsError(
"The width argument to getMinIntrinsicHeight was negative.\n" +
"The argument to getMinIntrinsicHeight must not be negative. " +
"If you perform computations on another width before passing it to " +
"getMinIntrinsicHeight, consider using Mathf.Max() or float.clamp() " +
"to force the value into the valid range."
);
throw new UIWidgetsError( new List<DiagnosticsNode>(){
new ErrorSummary("The width argument to getMinIntrinsicHeight was negative."),
new ErrorDescription("The argument to getMinIntrinsicHeight must not be negative or null."),
new ErrorHint(
"If you perform computations on another width before passing it to " +
"getMinIntrinsicHeight, consider using math.max() or double.clamp() " +
"to force the value into the valid range."
)
});
}
return true;

public float getMaxIntrinsicHeight(float width) {
D.assert(() => {
if (width < 0.0) {
throw new UIWidgetsError(
"The width argument to getMaxIntrinsicHeight was negative.\n" +
"The argument to getMaxIntrinsicHeight must not be negative. " +
"If you perform computations on another width before passing it to " +
"getMaxIntrinsicHeight, consider using Mathf.Max() or float.clamp() " +
"to force the value into the valid range."
);
throw new UIWidgetsError(new List<DiagnosticsNode>{
new ErrorSummary("The width argument to getMaxIntrinsicHeight was negative."),
new ErrorDescription("The argument to getMaxIntrinsicHeight must not be negative or null."),
new ErrorHint(
"If you perform computations on another width before passing it to " +
"getMaxIntrinsicHeight, consider using math.max() or double.clamp() " +
"to force the value into the valid range."
)
});
}
return true;

get {
D.assert(hasSize, () => "RenderBox was not laid out: " + this);
D.assert(() => {
if (this._size is _DebugSize) {
_DebugSize _size = (_DebugSize) this._size;
D.assert(_size._owner == this);
Size _size = this._size;
if (_size is _DebugSize) {
D.assert(((_DebugSize)_size)._owner == this);
(debugActiveLayout == parent && _size._canBeUsedByParent));
(debugActiveLayout == parent && ((_DebugSize)_size)._canBeUsedByParent));
}
D.assert(_size == this._size);

}
D.assert(!debugDoingThisResize);
string contract = "", violation = "", hint = "";
List<DiagnosticsNode> information = new List<DiagnosticsNode>{
new ErrorSummary("RenderBox size setter called incorrectly.")
};
violation = "It appears that the size setter was called from performLayout().";
hint = "";
information.Add(new ErrorDescription("It appears that the size setter was called from performLayout()."));
violation =
"The size setter was called from outside layout (neither performResize() nor performLayout() were being run for this object).";
information.Add(new ErrorDescription(
"The size setter was called from outside layout (neither performResize() nor performLayout() were being run for this object)."
));
hint =
"Only the object itself can set its size. It is a contract violation for other objects to set it.";
information.Add(new ErrorDescription("Only the object itself can set its size. It is a contract violation for other objects to set it."));
contract =
"Because this RenderBox has sizedByParent set to true, it must set its size in performResize().";
information.Add(new ErrorDescription("Because this RenderBox has sizedByParent set to true, it must set its size in performResize()."));
contract =
"Because this RenderBox has sizedByParent set to false, it must set its size in performLayout().";
information.Add(new ErrorDescription("Because this RenderBox has sizedByParent set to false, it must set its size in performLayout()."));
throw new UIWidgetsError(
"RenderBox size setter called incorrectly.\n" +
violation + "\n" +
hint + "\n" +
contract + "\n" +
"The RenderBox in question is:\n" +
" " + this
);
throw new UIWidgetsError(information);
});
D.assert(() => {
value = debugAdoptSize(value);

var value = (_DebugSize) valueRaw;
if (value._owner != this) {
if (value._owner.parent != this) {
throw new UIWidgetsError(
"The size property was assigned a size inappropriately.\n" +
"The following render object:\n" +
" " + this + "\n" +
"...was assigned a size obtained from:\n" +
" " + value._owner + "\n" +
"However, this second render object is not, or is no longer, a " +
"child of the first, and it is therefore a violation of the " +
"RenderBox layout protocol to use that size in the layout of the " +
"first render object.\n" +
"If the size was obtained at a time where it was valid to read " +
"the size (because the second render object above was a child " +
"of the first at the time), then it should be adopted using " +
"debugAdoptSize at that time.\n" +
"If the size comes from a grandchild or a render object from an " +
"entirely different part of the render tree, then there is no " +
"way to be notified when the size changes and therefore attempts " +
"to read that size are almost certainly a source of bugs. A different " +
"approach should be used."
);
throw new UIWidgetsError(new List<DiagnosticsNode>{
new ErrorSummary("The size property was assigned a size inappropriately."),
describeForError("The following render object"),
value._owner.describeForError("...was assigned a size obtained from"),
new ErrorDescription(
"However, this second render object is not, or is no longer, a " +
"child of the first, and it is therefore a violation of the " +
"RenderBox layout protocol to use that size in the layout of the " +
"first render object."
),
new ErrorHint(
"If the size was obtained at a time where it was valid to read " +
"the size (because the second render object above was a child " +
"of the first at the time), then it should be adopted using " +
"debugAdoptSize at that time."
),
new ErrorHint(
"If the size comes from a grandchild or a render object from an " +
"entirely different part of the render tree, then there is no " +
"way to be notified when the size changes and therefore attempts " +
"to read that size are almost certainly a source of bugs. A different " +
"approach should be used."
)
});
throw new UIWidgetsError(
"A child\"s size was used without setting parentUsesSize.\n" +
"The following render object:\n" +
" " + this + "\n" +
"...was assigned a size obtained from its child:\n" +
" " + value._owner + "\n" +
"However, when the child was laid out, the parentUsesSize argument " +
"was not set or set to false. Subsequently this transpired to be " +
"inaccurate: the size was nonetheless used by the parent.\n" +
"It is important to tell the framework if the size will be used or not " +
"as several important performance optimizations can be made if the " +
"size will not be used by the parent."
);
throw new UIWidgetsError(new List<DiagnosticsNode>{
new ErrorSummary("A child's size was used without setting parentUsesSize."),
describeForError("The following render object"),
value._owner.describeForError("...was assigned a size obtained from its child"),
new ErrorDescription(
"However, when the child was laid out, the parentUsesSize argument " +
"was not set or set to false. Subsequently this transpired to be " +
"inaccurate: the size was nonetheless used by the parent.\n" +
"It is important to tell the framework if the size will be used or not " +
"as several important performance optimizations can be made if the " +
"size will not be used by the parent."
)
});
}
}
}

D.assert(() => {
if (!hasSize) {
D.assert(!debugNeedsLayout);
string contract = "";
DiagnosticsNode contract;
contract =
"Because this RenderBox has sizedByParent set to true, it must set its size in performResize().\n";
contract = new ErrorDescription("Because this RenderBox has sizedByParent set to true, it must set its size in performResize().");
contract =
"Because this RenderBox has sizedByParent set to false, it must set its size in performLayout().\n";
contract = new ErrorDescription("Because this RenderBox has sizedByParent set to false, it must set its size in performLayout().");
throw new UIWidgetsError(
"RenderBox did not set its size during layout.\n" +
contract +
"It appears that this did not happen; layout completed, but the size property is still null.\n" +
"The RenderBox in question is:\n" +
" " + this);
throw new UIWidgetsError(new List<DiagnosticsNode> {
new ErrorSummary("RenderBox did not set its size during layout."),
contract,
new ErrorDescription(
"It appears that this did not happen; layout completed, but the size property is still null."),
new DiagnosticsProperty<RenderBox>("The RenderBox in question is", this,
style: DiagnosticsTreeStyle.errorProperty),
});
var information = new StringBuilder();
List<DiagnosticsNode> information = new List<DiagnosticsNode>{
new ErrorSummary("${runtimeType} object was given an infinite size during layout."),
new ErrorDescription(
"This probably means that it is a render object that tries to be " +
"as big as possible, but it was put inside another render object " +
"that allows its children to pick their own size."
)
};
information.Add(node.describeForError("The nearest ancestor providing an unbounded width constraint is"));
information.AppendLine("The nearest ancestor providing an unbounded width constraint is:");
information.Append(" ");
information.AppendLine(node.toStringShallow(joiner: "\n "));
}
if (!constraints.hasBoundedHeight) {

information.Add(node.describeForError("The nearest ancestor providing an unbounded height constraint is"));
information.AppendLine("The nearest ancestor providing an unbounded height constraint is:");
information.Append(" ");
information.AppendLine(node.toStringShallow(joiner: "\n "));
throw new UIWidgetsError(
GetType() + " object was given an infinite size during layout.\n" +
"This probably means that it is a render object that tries to be " +
"as big as possible, but it was put inside another render object " +
"that allows its children to pick their own size.\n" +
information +
"The constraints that applied to the " + GetType() + " were:\n" +
" " + constraints + "\n" +
"The exact size it was given was:\n" +
" " + _size
);
information.Add(new DiagnosticsProperty<BoxConstraints>("The constraints that applied to the ${runtimeType} were", constraints, style: DiagnosticsTreeStyle.errorProperty));
information.Add(new DiagnosticsProperty<Size>("The exact size it was given was", _size, style: DiagnosticsTreeStyle.errorProperty));
information.Add(new ErrorHint("See https://flutter.dev/docs/development/ui/layout/box-constraints for more information."));
throw new UIWidgetsError(information);
throw new UIWidgetsError(
GetType() + " does not meet its constraints.\n" +
"Constraints: " + constraints + "\n" +
"Size: " + _size + "\n" +
"If you are not writing your own RenderBox subclass, then this is not " +
"your fault."
);
throw new UIWidgetsError(new List<DiagnosticsNode>{
new ErrorSummary("${runtimeType} does not meet its constraints."),
new DiagnosticsProperty<BoxConstraints>("Constraints", constraints, style: DiagnosticsTreeStyle.errorProperty),
new DiagnosticsProperty<Size>("Size", _size, style: DiagnosticsTreeStyle.errorProperty),
new ErrorHint(
"If you are not writing your own RenderBox subclass, then this is not " +
"your fault. Contact support: https://github.com/flutter/flutter/issues/new?template=BUG.md"
)
});
var failures = new StringBuilder();
int failureCount = 0;
List<DiagnosticsNode> failures = new List<DiagnosticsNode>();
failures.AppendLine(" * " + name + "(" + constraint + ") returned a negative value: " +
result);
failureCount += 1;
failures.Add(new ErrorDescription($" * {name}({constraint}) returned a negative value: {result}"));
failures.AppendLine(" * " + name + "(" + constraint +
") returned a non-finite value: " + result);
failureCount += 1;
failures.Add(new ErrorDescription($" * {name}({constraint}) returned a non-finite value: {result}"));
}
return result;

float min = testIntrinsic(getMin, "getMinIntrinsic" + name, constraint);
float max = testIntrinsic(getMax, "getMaxIntrinsic" + name, constraint);
if (min > max) {
failures.AppendLine(
" * getMinIntrinsic" + name + "(" + constraint + ") returned a larger value (" +
min +
") than getMaxIntrinsic" + name + "(" + constraint + ") (" + max + ")");
failureCount += 1;
failures.Add(new ErrorDescription($" * getMinIntrinsic{name}({constraint}) returned a larger value ({min}) than getMaxIntrinsic{name}({constraint}) ({max})"));
}
});

}
debugCheckingIntrinsics = false;
if (failures.Length > 0) {
D.assert(failureCount > 0);
throw new UIWidgetsError(
"The intrinsic dimension methods of the " + GetType() +
" class returned values that violate the intrinsic protocol contract.\n" +
"The following failures was detected:\n" +
failures +
if (failures.Count > 0) {
failures.Add(new ErrorSummary("The intrinsic dimension methods of the $runtimeType class returned values that violate the intrinsic protocol contract."));
failures.Add(new ErrorDescription("The following failure(s) was detected:"));
failures.Add(new ErrorHint(
"your fault."
);
"your fault. Contact support: https://github.com/flutter/flutter/issues/new?template=BUG.md"
));
throw new UIWidgetsError(failures);
}
}

protected override void performLayout() {
D.assert(() => {
if (!sizedByParent) {
throw new UIWidgetsError(
GetType() + " did not implement performLayout().\n" +
"RenderBox subclasses need to either override performLayout() to " +
"set a size and lay out any children, or, set sizedByParent to true " +
"so that performResize() sizes the render object."
);
throw new UIWidgetsError(new List<DiagnosticsNode>{
new ErrorSummary("$runtimeType did not implement performLayout()."),
new ErrorHint(
"RenderBox subclasses need to either override performLayout() to " +
"set a size and lay out any children, or, set sizedByParent to true " +
"so that performResize() sizes the render object."
)
});
}
return true;

D.assert(() => {
if (!hasSize) {
if (debugNeedsLayout) {
throw new UIWidgetsError(
"Cannot hit test a render box that has never been laid out.\n" +
"The hitTest() method was called on this RenderBox:\n" +
" " + this + "\n" +
"Unfortunately, this object\"s geometry is not known at this time, " +
"probably because it has never been laid out. " +
"This means it cannot be accurately hit-tested. If you are trying " +
"to perform a hit test during the layout phase itself, make sure " +
"you only hit test nodes that have completed layout (e.g. the node\"s " +
"children, after their layout() method has been called)."
);
throw new UIWidgetsError(new List<DiagnosticsNode>{
new ErrorSummary("Cannot hit test a render box that has never been laid out."),
describeForError("The hitTest() method was called on this RenderBox"),
new ErrorDescription(
"Unfortunately, this object's geometry is not known at this time, " +
"probably because it has never been laid out. " +
"This means it cannot be accurately hit-tested."
),
new ErrorHint(
"If you are trying " +
"to perform a hit test during the layout phase itself, make sure " +
"you only hit test nodes that have completed layout (e.g. the node's " +
"children, after their layout() method has been called)."
)
});
throw new UIWidgetsError(
"Cannot hit test a render box with no size.\n" +
"The hitTest() method was called on this RenderBox:\n" +
" " + this + "\n" +
"Although this node is not marked as needing layout, " +
"its size is not set. A RenderBox object must have an " +
"explicit size before it can be hit-tested. Make sure " +
"that the RenderBox in question sets its size during layout."
);
throw new UIWidgetsError(new List<DiagnosticsNode>{
new ErrorSummary("Cannot hit test a render box with no size."),
describeForError("The hitTest() method was called on this RenderBox"),
new ErrorDescription(
"Although this node is not marked as needing layout, " +
"its size is not set."
),
new ErrorHint(
"A RenderBox object must have an " +
"explicit size before it can be hit-tested. Make sure " +
"that the RenderBox in question sets its size during layout."
)
});
}
return true;

D.assert(child.parent == this);
D.assert(() => {
if (!(child.parentData is BoxParentData)) {
throw new UIWidgetsError(
GetType() + " does not implement applyPaintTransform.\n" +
"The following " + GetType() + " object:\n" +
" " + toStringShallow() + "\n" +
"...did not use a BoxParentData class for the parentData field of the following child:\n" +
" " + child.toStringShallow() + "\n" +
"The " + GetType() + " class inherits from RenderBox. " +
"The default applyPaintTransform implementation provided by RenderBox assumes that the " +
"children all use BoxParentData objects for their parentData field. " +
"Since " + GetType() +
" does not in fact use that ParentData class for its children, it must " +
"provide an implementation of applyPaintTransform that supports the specific ParentData " +
"subclass used by its children (which apparently is " + child.parentData.GetType() + ")."
);
throw new UIWidgetsError(new List<DiagnosticsNode>{
new ErrorSummary($"{GetType()} does not implement applyPaintTransform."),
describeForError($"The following {GetType()} object"),
child.describeForError("...did not use a BoxParentData class for the parentData field of the following child"),
new ErrorDescription($"The {GetType()} class inherits from RenderBox."),
new ErrorHint(
"The default applyPaintTransform implementation provided by RenderBox assumes that the " +
"children all use BoxParentData objects for their parentData field. " +
$"Since {GetType()} does not in fact use that ParentData class for its children, it must " +
"provide an implementation of applyPaintTransform that supports the specific ParentData " +
$"subclass used by its children (which apparently is {child.parentData.GetType()})."
),
});
}
return true;

80
com.unity.uiwidgets/Runtime/rendering/custom_layout.cs
查看文件


}
public abstract class MultiChildLayoutDelegate {
MultiChildLayoutDelegate(Listenable relayout = null) {
_relayout = relayout;
}
public readonly Listenable _relayout;
Dictionary<object, RenderBox> _idToChild;
HashSet<RenderBox> _debugChildrenNeedingLayout;

D.assert(constraints.debugAssertIsValid(isAppliedConstraint: true));
}
catch (AssertionError exception) {
throw new UIWidgetsError(
$"The {this} custom multichild layout delegate provided invalid box constraints for the child with id \"{childId}\".\n" +
$"{exception}n" +
"The minimum width and height must be greater than or equal to zero.\n" +
"The maximum width must be greater than or equal to the minimum width.\n" +
"The maximum height must be greater than or equal to the minimum height.");
throw new UIWidgetsError(new List<DiagnosticsNode> {
new ErrorSummary(
$"The $this custom multichild layout delegate provided invalid box constraints for the child with id {childId}."),
new DiagnosticsProperty<AssertionError>("Exception", exception, showName: false),
new ErrorDescription(
"The minimum width and height must be greater than or equal to zero.\n" +
"The maximum width must be greater than or equal to the minimum width.\n" +
"The maximum height must be greater than or equal to the minimum height."
)
});
}
return true;

childParentData.offset = offset;
}
string _debugDescribeChild(RenderBox child) {
DiagnosticsNode _debugDescribeChild(RenderBox child) {
return $"{childParentData.id}: {child}";
return new DiagnosticsProperty<RenderBox>($"{childParentData.id}", child);
}

MultiChildLayoutParentData childParentData = (MultiChildLayoutParentData) child.parentData;
D.assert(() => {
if (childParentData.id == null) {
throw new UIWidgetsError(
"The following child has no ID:\n" +
$" {child}\n" +
"Every child of a RenderCustomMultiChildLayoutBox must have an ID in its parent data."
);
throw new UIWidgetsError(new List<DiagnosticsNode>{
new ErrorSummary("Every child of a RenderCustomMultiChildLayoutBox must have an ID in its parent data."),
child.describeForError("The following child has no ID")
});
}
return true;

performLayout(size);
D.assert(() => {
List<DiagnosticsNode> renderBoxes = new List<DiagnosticsNode>();
foreach (var renderBox in _debugChildrenNeedingLayout) {
renderBoxes.Add(_debugDescribeChild(renderBox));
}
if (_debugChildrenNeedingLayout.Count > 1) {
throw new UIWidgetsError(
$"The $this custom multichild layout delegate forgot to lay out the following children:\n" +
$" {string.Join("\n ", _debugChildrenNeedingLayout.Select(_debugDescribeChild))}\n" +
"Each child must be laid out exactly once."
);
}
else {
throw new UIWidgetsError(
$"The $this custom multichild layout delegate forgot to lay out the following child:\n" +
$" {_debugDescribeChild(_debugChildrenNeedingLayout.First())}\n" +
"Each child must be laid out exactly once."
);
}
throw new UIWidgetsError(new List<DiagnosticsNode>{
new ErrorSummary("Each child must be laid out exactly once."),
new DiagnosticsBlock(
name: "The $this custom multichild layout delegate forgot " +
"to lay out the following child(ren)",
properties: renderBoxes,
style: DiagnosticsTreeStyle.whitespace
)
});
}
return true;

if (_delegate == value) {
return;
}
if (value.GetType() != _delegate.GetType() || value.shouldRelayout(_delegate)) {
MultiChildLayoutDelegate oldDelegate = _delegate;
if (value.GetType() != oldDelegate.GetType() || value.shouldRelayout(oldDelegate)) {
if (attached) {
oldDelegate?._relayout?.removeListener(markNeedsLayout);
value?._relayout?.addListener(markNeedsLayout);
}
/*public override void attach(PipelineOwner owner) {
base.attach(owner);
_delegate?._relayout?.addListener(markNeedsLayout);
}
public override void detach() {
_delegate?._relayout?.removeListener(markNeedsLayout);
base.detach();
}*/
Size _getSize(BoxConstraints constraints) {
D.assert(constraints.debugAssertIsValid());

defaultPaint(context, offset);
}
protected override bool hitTestChildren(BoxHitTestResult result, Offset position) {
protected override bool hitTestChildren(BoxHitTestResult result, Offset position = null) {
return defaultHitTestChildren(result, position: position);
}
}

2
com.unity.uiwidgets/Runtime/rendering/object.cs
查看文件


}
}
protected DiagnosticsNode describeForError(String name, DiagnosticsTreeStyle style = DiagnosticsTreeStyle.shallow) {
public DiagnosticsNode describeForError(String name, DiagnosticsTreeStyle style = DiagnosticsTreeStyle.shallow) {
return toDiagnosticsNode(name: name, style: style);
}
}

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