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Minor refactorization

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This commit is contained in:
Marcin Ziąbek
2021-05-03 00:38:48 +02:00
parent f792f6c749
commit 78e5cbd098
1 changed files with 74 additions and 69 deletions
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QuestPDF/Elements/Row.cs
+74 -69
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@@ -79,75 +79,6 @@ namespace QuestPDF.Elements
public ICollection<RowElement> Children { get; internal set; } = new List<RowElement>();
public float Spacing { get; set; } = 0;
public Element Compose(float availableWidth)
{
var elements = ReduceRows(AddSpacing(Children));
return BuildTree(elements.ToArray());
ICollection<Element> ReduceRows(ICollection<RowElement> elements)
{
var constantWidth = elements
.Where(x => x is ConstantRowElement)
.Cast<ConstantRowElement>()
.Sum(x => x.Width);
var relativeWidth = elements
.Where(x => x is RelativeRowElement)
.Cast<RelativeRowElement>()
.Sum(x => x.Width);
var widthPerRelativeUnit = (availableWidth - constantWidth) / relativeWidth;
return elements
.Select(x =>
{
if (x is RelativeRowElement r)
return new ConstantRowElement(r.Width * widthPerRelativeUnit)
{
Child = x.Child
};
return x;
})
.Select(x => new Constrained
{
MinWidth = x.Width,
MaxWidth = x.Width,
Child = x.Child
})
.Cast<Element>()
.ToList();
}
ICollection<RowElement> AddSpacing(ICollection<RowElement> elements)
{
if (Spacing < Size.Epsilon)
return elements;
return elements
.SelectMany(x => new[] { new ConstantRowElement(Spacing), x })
.Skip(1)
.ToList();
}
Element BuildTree(Span<Element> elements)
{
if (elements.IsEmpty)
return Empty.Instance;
if (elements.Length == 1)
return elements[0];
var half = elements.Length / 2;
return new SimpleRow
{
Left = BuildTree(elements.Slice(0, half)),
Right = BuildTree(elements.Slice(half))
};
}
}
internal override ISpacePlan Measure(Size availableSpace)
{
return Compose(availableSpace.Width).Measure(availableSpace);
@@ -157,5 +88,79 @@ namespace QuestPDF.Elements
{
Compose(availableSpace.Width).Draw(canvas, availableSpace);
}
#region structure
private Element Compose(float availableWidth)
{
var elements = AddSpacing(Children, Spacing);
var rowElements = ReduceRows(elements, availableWidth);
return BuildTree(rowElements.ToArray());
}
private static ICollection<Element> ReduceRows(ICollection<RowElement> elements, float availableWidth)
{
var constantWidth = elements
.Where(x => x is ConstantRowElement)
.Cast<ConstantRowElement>()
.Sum(x => x.Width);
var relativeWidth = elements
.Where(x => x is RelativeRowElement)
.Cast<RelativeRowElement>()
.Sum(x => x.Width);
var widthPerRelativeUnit = (availableWidth - constantWidth) / relativeWidth;
return elements
.Select(x =>
{
if (x is RelativeRowElement r)
return new ConstantRowElement(r.Width * widthPerRelativeUnit)
{
Child = x.Child
};
return x;
})
.Select(x => new Constrained
{
MinWidth = x.Width,
MaxWidth = x.Width,
Child = x.Child
})
.Cast<Element>()
.ToList();
}
private static ICollection<RowElement> AddSpacing(ICollection<RowElement> elements, float spacing)
{
if (spacing < Size.Epsilon)
return elements;
return elements
.SelectMany(x => new[] { new ConstantRowElement(spacing), x })
.Skip(1)
.ToList();
}
private static Element BuildTree(Span<Element> elements)
{
if (elements.IsEmpty)
return Empty.Instance;
if (elements.Length == 1)
return elements[0];
var half = elements.Length / 2;
return new SimpleRow
{
Left = BuildTree(elements.Slice(0, half)),
Right = BuildTree(elements.Slice(half))
};
}
#endregion
}
}