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Text: rendering custom elements inside text

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This commit is contained in:
Marcin Ziąbek
2021-08-27 01:55:20 +02:00
parent b9cfaf3846
commit d9b3f016e8
3 changed files with 80 additions and 23 deletions
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QuestPDF.Examples/TextExamples.cs
+13 -7
View File
@@ -17,6 +17,7 @@ namespace QuestPDF.Examples
.PageSize(PageSizes.A4)
.FileName()
.ProducePdf()
.ShowResults()
.Render(container =>
{
container
@@ -30,17 +31,22 @@ namespace QuestPDF.Examples
text.Span("Then something bigger. ", TextStyle.Default.Size(28).Color(Colors.DeepOrange.Darken2).BackgroundColor(Colors.Yellow.Lighten3).Underlined());
text.Span("And tiny teeny-tiny. ", TextStyle.Default.Size(6));
text.Span("Stroked text also works fine. ", TextStyle.Default.Size(14).Stroked().BackgroundColor(Colors.Grey.Lighten4));
//text.NewLine();
text.NewLine();
text.Span("Is it time for lorem ipsum? ", TextStyle.Default.Size(12).Underlined().BackgroundColor(Colors.Grey.Lighten3));
text.Span(Placeholders.LoremIpsum(), TextStyle.Default.Size(12));
//text.NewLine();
text.Span("And now some colors: ", TextStyle.Default.Size(16).Color(Colors.Green.Medium));
text.Span("Before element - ");
text.Element().PaddingBottom(-10).Background(Colors.Red.Lighten4).Width(50).Height(20);
text.Span(" - end of element.");
foreach (var i in Enumerable.Range(1, 100))
{
text.Span($"{i}: {Placeholders.Sentence()} ", TextStyle.Default.Size(12 + i / 5).LineHeight(2.75f - i / 50f).Color(Placeholders.Color()).BackgroundColor(Placeholders.BackgroundColor()));
}
text.NewLine();
// text.Span("And now some colors: ", TextStyle.Default.Size(16).Color(Colors.Green.Medium));
//
// foreach (var i in Enumerable.Range(1, 100))
// {
// text.Span($"{i}: {Placeholders.Sentence()} ", TextStyle.Default.Size(12 + i / 5).LineHeight(2.75f - i / 50f).Color(Placeholders.Color()).BackgroundColor(Placeholders.BackgroundColor()));
// }
});
});
}
QuestPDF/Elements/Text/TextItem.cs
+43
View File
@@ -1,6 +1,7 @@
using System;
using System.Collections.Generic;
using QuestPDF.Drawing;
using QuestPDF.Drawing.SpacePlan;
using QuestPDF.Infrastructure;
using Size = QuestPDF.Infrastructure.Size;
@@ -225,4 +226,46 @@ namespace QuestPDF.Elements.Text
};
}
}
internal class ElementTextItem : ITextElement
{
public Element Element { get; set; } = Empty.Instance;
public TextMeasurementResult? Measure(TextMeasurementRequest request)
{
Element.HandleVisitor(x => (x as IStateResettable)?.ResetState());
Element.HandleVisitor(x => x.Initialize(request.PageContext, request.Canvas));
var measurement = Element.Measure(new Size(request.AvailableWidth, Size.Max.Height));
if (measurement is Wrap || measurement is PartialRender)
return null;
var elementSize = measurement as Size;
return new TextMeasurementResult
{
Width = elementSize.Width,
Ascent = -elementSize.Height,
Descent = 0,
LineHeight = 1,
StartIndex = 0,
EndIndex = 0,
TotalIndex = 0
};
}
public void Draw(TextDrawingRequest request)
{
Element.HandleVisitor(x => (x as IStateResettable)?.ResetState());
Element.HandleVisitor(x => x.Initialize(request.PageContext, request.Canvas));
request.Canvas.Translate(new Position(0, request.TotalAscent));
Element.Draw(new Size(request.TextSize.Width, -request.TotalAscent));
request.Canvas.Translate(new Position(0, -request.TotalAscent));
}
}
}
QuestPDF/Fluent/TextExtensions.cs
+24 -16
View File
@@ -38,6 +38,14 @@ namespace QuestPDF.Fluent
{
Spacing = value;
}
private void AddItemToLastTextBlock(ITextElement element)
{
if (!TextBlocks.Any())
TextBlocks.Add(new TextBlock());
TextBlocks.Last().Children.Add(element);
}
public void Span(string text, TextStyle? style = null)
{
@@ -55,10 +63,7 @@ namespace QuestPDF.Fluent
})
.ToList();
if (!TextBlocks.Any())
TextBlocks.Add(new TextBlock());
TextBlocks.First().Children.Add(items.First());
AddItemToLastTextBlock(items.First());
items
.Skip(1)
@@ -79,10 +84,7 @@ namespace QuestPDF.Fluent
{
style ??= DefaultStyle;
if (!TextBlocks.Any())
TextBlocks.Add(new TextBlock());
TextBlocks.First().Children.Add(new PageNumberTextItem()
AddItemToLastTextBlock(new PageNumberTextItem()
{
Style = style,
SlotName = slotName
@@ -108,10 +110,7 @@ namespace QuestPDF.Fluent
{
style ??= DefaultStyle;
if (!TextBlocks.Any())
TextBlocks.Add(new TextBlock());
TextBlocks.First().Children.Add(new InternalLinkTextItem
AddItemToLastTextBlock(new InternalLinkTextItem
{
Style = style,
Text = text,
@@ -123,10 +122,7 @@ namespace QuestPDF.Fluent
{
style ??= DefaultStyle;
if (!TextBlocks.Any())
TextBlocks.Add(new TextBlock());
TextBlocks.First().Children.Add(new ExternalLinkTextItem
AddItemToLastTextBlock(new ExternalLinkTextItem
{
Style = style,
Text = text,
@@ -134,6 +130,18 @@ namespace QuestPDF.Fluent
});
}
public IContainer Element()
{
var container = new Container();
AddItemToLastTextBlock(new ElementTextItem
{
Element = container
});
return container.Box();
}
internal void Compose(IContainer container)
{
TextBlocks.ToList().ForEach(x => x.Alignment = Alignment);