internal static float CalculateLineHeight(AbstractRenderer renderer)
{
LineHeight lineHeight = renderer.GetProperty <LineHeight>(Property.LINE_HEIGHT);
float fontSize = renderer.GetPropertyAsUnitValue(Property.FONT_SIZE).GetValue();
float lineHeightValue;
if (lineHeight == null || lineHeight.IsNormalValue() || lineHeight.GetValue() < 0)
{
lineHeightValue = DEFAULT_LINE_HEIGHT_COEFF * fontSize;
float[] fontAscenderDescender = GetFontAscenderDescenderNormalized(renderer);
float fontAscenderDescenderSum = fontAscenderDescender[0] - fontAscenderDescender[1];
if (fontAscenderDescenderSum > lineHeightValue)
{
lineHeightValue = fontAscenderDescenderSum;
}
}
else
{
if (lineHeight.IsFixedValue())
{
lineHeightValue = lineHeight.GetValue();
}
else
{
lineHeightValue = lineHeight.GetValue() * fontSize;
}
}
return(lineHeightValue);
}
public virtual void CalculateLineHeighttTextRendererPointTest()
{
Document document = new Document(new PdfDocument(new PdfWriter(new ByteArrayOutputStream())));
TextRenderer textRenderer = new TextRenderer(new Text("Hello"));
textRenderer.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateFixedValue(200));
textRenderer.SetParent(document.GetRenderer());
float lineHeight = LineHeightHelper.CalculateLineHeight(textRenderer);
NUnit.Framework.Assert.AreEqual(200, lineHeight, EPS);
}
public override void OnLayout(IGUIContext ctx, RectangleF bounds)
{
base.OnLayout(ctx, bounds);
SubMenuWidgetStyle style = Style as SubMenuWidgetStyle;
if (style != null && Font != null)
{
style.IconColumnWidth = LineHeight.Ceil();
}
}
public virtual void LineRendererLayoutInHtmlModeWithLineHeightAndNoChildrenTest()
{
Document document = CreateDocument();
LineRenderer lineRenderer = new LineRenderer();
lineRenderer.SetParent(document.GetRenderer());
lineRenderer.SetProperty(Property.RENDERING_MODE, RenderingMode.HTML_MODE);
lineRenderer.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateNormalValue());
lineRenderer.Layout(new LayoutContext(CreateLayoutArea(1000, 1000)));
NUnit.Framework.Assert.AreEqual(0f, lineRenderer.maxAscent, 0f);
NUnit.Framework.Assert.AreEqual(0f, lineRenderer.maxDescent, 0f);
}
public virtual void CalculateLineHeightTextRendererNormalAscenderDescenderSumForNotoSansFontTest()
{
Document document = new Document(new PdfDocument(new PdfWriter(new ByteArrayOutputStream())));
PdfFont font = PdfFontFactory.CreateFont(FONTS + "NotoSans-Regular.ttf");
TextRenderer textRenderer = new TextRenderer(new Text("Hello"));
textRenderer.SetProperty(Property.FONT, font);
textRenderer.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateNormalValue());
textRenderer.SetParent(document.GetRenderer());
float lineHeight = LineHeightHelper.CalculateLineHeight(textRenderer);
NUnit.Framework.Assert.AreEqual(16.31999f, lineHeight, EPS);
}
private static void SetLineHeight(IPropertyContainer elementToSet, String lineHeight, float em, float rem)
{
if (lineHeight != null && !CssConstants.NORMAL.Equals(lineHeight) && !CssConstants.AUTO.Equals(lineHeight)
)
{
if (CssTypesValidationUtils.IsNumericValue(lineHeight))
{
float?number = CssDimensionParsingUtils.ParseFloat(lineHeight);
if (number != null)
{
elementToSet.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateMultipliedValue((float)number));
}
else
{
elementToSet.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateNormalValue());
}
}
else
{
UnitValue lineHeightValue = CssDimensionParsingUtils.ParseLengthValueToPt(lineHeight, em, rem);
if (lineHeightValue != null && lineHeightValue.IsPointValue())
{
elementToSet.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateFixedValue(lineHeightValue.GetValue()));
}
else
{
if (lineHeightValue != null)
{
elementToSet.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateMultipliedValue(lineHeightValue.GetValue()
/ 100f));
}
else
{
elementToSet.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateNormalValue());
}
}
}
}
else
{
elementToSet.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateNormalValue());
}
}
public virtual void LineRendererLayoutInHtmlModeWithLineHeightAndChildInHtmlModeTest()
{
Document document = CreateDocument();
LineRenderer lineRenderer = new LineRenderer();
lineRenderer.SetParent(document.GetRenderer());
lineRenderer.SetProperty(Property.RENDERING_MODE, RenderingMode.HTML_MODE);
lineRenderer.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateFixedValue(50));
TextRenderer textRenderer1 = new TextRenderer(new Text("text"));
textRenderer1.SetProperty(Property.RENDERING_MODE, RenderingMode.HTML_MODE);
TextRenderer textRenderer2 = new TextRenderer(new Text("text"));
lineRenderer.AddChild(textRenderer1);
lineRenderer.AddChild(textRenderer2);
lineRenderer.Layout(new LayoutContext(CreateLayoutArea(1000, 1000)));
NUnit.Framework.Assert.AreEqual(28.67920f, lineRenderer.maxAscent, EPS);
NUnit.Framework.Assert.AreEqual(-21.32080f, lineRenderer.maxDescent, EPS);
}
public virtual void LineRendererLayoutInHtmlModeWithLineHeightPropertyNotSet()
{
LineRenderer lineRenderer = new LineRenderer();
lineRenderer.SetParent(CreateDocument().GetRenderer());
lineRenderer.SetProperty(Property.RENDERING_MODE, RenderingMode.HTML_MODE);
// Set fonts with different ascent/descent to line and text
lineRenderer.SetProperty(Property.FONT, PdfFontFactory.CreateFont(StandardFonts.HELVETICA));
TextRenderer textRenderer = new TextRenderer(new Text("text"));
textRenderer.SetProperty(Property.FONT, PdfFontFactory.CreateFont(StandardFonts.COURIER));
lineRenderer.AddChild(textRenderer);
LayoutResult layoutResLineHeightNotSet = lineRenderer.Layout(new LayoutContext(CreateLayoutArea(1000, 1000
)));
lineRenderer.SetProperty(Property.LINE_HEIGHT, LineHeight.CreateNormalValue());
LayoutResult layoutResLineHeightNormal = lineRenderer.Layout(new LayoutContext(CreateLayoutArea(1000, 1000
)));
Rectangle bboxLineHeightNotSet = layoutResLineHeightNotSet.GetOccupiedArea().GetBBox();
Rectangle bboxLineHeightNormal = layoutResLineHeightNormal.GetOccupiedArea().GetBBox();
NUnit.Framework.Assert.IsTrue(bboxLineHeightNotSet.EqualsWithEpsilon(bboxLineHeightNormal));
}
/// <summary>
/// Calc the length of the adjacent side from the length of the opposite side and
/// the tangent of the adjacent side angle.
/// </summary>
/// <param name="Tan"></param>
/// <param name="OppLgth"></param>
/// <returns></returns>
public static double CalcAdjacentLgth(double Tan, LineHeight OppLgth)
{
var adjLgth = Math.Abs(OppLgth.Value) / Tan;
return(adjLgth);
}
