public void GetAndAdd()
{
char from = 'é';
char to = 'a';
char result = Diacritics.Add(to, Diacritics.Get(from));
Assert.AreEqual('á', result);
}
public void DiacriticsCharTests()
{
Assert.IsFalse(Diacritics.Contains('A'));
Assert.AreEqual('e', Diacritics.Remove('é'));
}
public void ShowText(IInputBytes bytes)
{
var currentState = GetCurrentState();
var font = currentState.FontState.FromExtendedGraphicsState ? activeExtendedGraphicsStateFont : resourceStore.GetFont(currentState.FontState.FontName);
if (font == null)
{
throw new InvalidOperationException($"Could not find the font with name {currentState.FontState.FontName} in the resource store. It has not been loaded yet.");
}
var fontSize = currentState.FontState.FontSize;
var horizontalScaling = currentState.FontState.HorizontalScaling / 100.0;
var characterSpacing = currentState.FontState.CharacterSpacing;
var rise = currentState.FontState.Rise;
var transformationMatrix = currentState.CurrentTransformationMatrix;
var renderingMatrix =
TransformationMatrix.FromValues(fontSize * horizontalScaling, 0, 0, fontSize, 0, rise);
var pointSize = Math.Round(transformationMatrix.Multiply(TextMatrices.TextMatrix).Transform(new PdfRectangle(0, 0, 1, fontSize)).Height, 2);
while (bytes.MoveNext())
{
var code = font.ReadCharacterCode(bytes, out int codeLength);
var foundUnicode = font.TryGetUnicode(code, out var unicode);
if (!foundUnicode || unicode == null)
{
log.Warn($"We could not find the corresponding character with code {code} in font {font.Name}.");
// Try casting directly to string as in PDFBox 1.8.
unicode = new string((char)code, 1);
}
var wordSpacing = 0.0;
if (code == ' ' && codeLength == 1)
{
wordSpacing += GetCurrentState().FontState.WordSpacing;
}
var textMatrix = TextMatrices.TextMatrix;
if (font.IsVertical)
{
if (!(font is IVerticalWritingSupported verticalFont))
{
throw new InvalidOperationException($"Font {font.Name} was in vertical writing mode but did not implement {nameof(IVerticalWritingSupported)}.");
}
var positionVector = verticalFont.GetPositionVector(code);
textMatrix = textMatrix.Translate(positionVector.X, positionVector.Y);
}
var boundingBox = font.GetBoundingBox(code);
var transformedGlyphBounds = PerformantRectangleTransformer
.Transform(renderingMatrix, textMatrix, transformationMatrix, boundingBox.GlyphBounds);
var transformedPdfBounds = PerformantRectangleTransformer
.Transform(renderingMatrix, textMatrix, transformationMatrix, new PdfRectangle(0, 0, boundingBox.Width, 0));
// If the text rendering mode calls for filling, the current nonstroking color in the graphics state is used;
// if it calls for stroking, the current stroking color is used.
// In modes that perform both filling and stroking, the effect is as if each glyph outline were filled and then stroked in separate operations.
// TODO: expose color as something more advanced
var color = currentState.FontState.TextRenderingMode != TextRenderingMode.Stroke
? currentState.CurrentNonStrokingColor
: currentState.CurrentStrokingColor;
Letter letter = null;
if (Diacritics.IsInCombiningDiacriticRange(unicode) && bytes.CurrentOffset > 0 && letters.Count > 0)
{
var attachTo = letters[letters.Count - 1];
if (attachTo.TextSequence == textSequence &&
Diacritics.TryCombineDiacriticWithPreviousLetter(unicode, attachTo.Value, out var newLetter))
{
// TODO: union of bounding boxes.
letters.Remove(attachTo);
letter = new Letter(
newLetter,
attachTo.GlyphRectangle,
attachTo.StartBaseLine,
attachTo.EndBaseLine,
attachTo.Width,
attachTo.FontSize,
attachTo.Font,
attachTo.Color,
attachTo.PointSize,
attachTo.TextSequence);
}
else
{
letter = new Letter(
unicode,
transformedGlyphBounds,
transformedPdfBounds.BottomLeft,
transformedPdfBounds.BottomRight,
transformedPdfBounds.Width,
fontSize,
font.Details,
color,
pointSize,
textSequence);
}
}
else
{
letter = new Letter(
unicode,
transformedGlyphBounds,
transformedPdfBounds.BottomLeft,
transformedPdfBounds.BottomRight,
transformedPdfBounds.Width,
fontSize,
font.Details,
color,
pointSize,
textSequence);
}
letters.Add(letter);
markedContentStack.AddLetter(letter);
double tx, ty;
if (font.IsVertical)
{
var verticalFont = (IVerticalWritingSupported)font;
var displacement = verticalFont.GetDisplacementVector(code);
tx = 0;
ty = (displacement.Y * fontSize) + characterSpacing + wordSpacing;
}
else
{
tx = (boundingBox.Width * fontSize + characterSpacing + wordSpacing) * horizontalScaling;
ty = 0;
}
TextMatrices.TextMatrix = TextMatrices.TextMatrix.Translate(tx, ty);
}
}
