/**
* <summary>Shows text.</summary>
* <param name="text">Text to show.</param>
* <param name="lineAlignment">Line alignment. It can be:
* <list type="bullet">
* <item><see cref="LineAlignmentEnum"/></item>
* <item><see cref="Length">: arbitrary super-/sub-script, depending on whether the value is
* positive or not.</item>
* </list>
* </param>
* <returns>Last shown character index.</returns>
*/
public int ShowText(
string text,
object lineAlignment
)
{
if (currentRow == null ||
text == null)
{
return(0);
}
ContentScanner.GraphicsState state = baseComposer.State;
fonts::Font font = state.Font;
double fontSize = state.FontSize;
double lineHeight = font.GetLineHeight(fontSize);
double baseLine = font.GetAscent(fontSize);
lineAlignment = ResolveLineAlignment(lineAlignment);
TextFitter textFitter = new TextFitter(
text,
0,
font,
fontSize,
hyphenation,
hyphenationCharacter
);
int textLength = text.Length;
int index = 0;
while (true)
{
if (currentRow.Width == 0) // Current row has just begun.
{
// Removing leading space...
while (true)
{
if (index == textLength) // Text end reached.
{
goto endTextShowing;
}
else if (text[index] != ' ') // No more leading spaces.
{
break;
}
index++;
}
}
if (OperationUtils.Compare(currentRow.Y + lineHeight, frame.Height) == 1) // Text's height exceeds block's remaining vertical space.
{
// Terminate the current row and exit!
EndRow(false);
goto endTextShowing;
}
// Does the text fit?
if (textFitter.Fit(
index,
frame.Width - currentRow.Width, // Remaining row width.
currentRow.SpaceCount == 0
))
{
// Get the fitting text!
string textChunk = textFitter.FittedText;
double textChunkWidth = textFitter.FittedWidth;
PointF textChunkLocation = new PointF(
(float)currentRow.Width,
(float)currentRow.Y
);
// Insert the fitting text!
RowObject obj;
{
obj = new RowObject(
RowObject.TypeEnum.Text,
baseComposer.BeginLocalState(), // Opens the row object's local state.
lineHeight,
textChunkWidth,
CountOccurrence(' ', textChunk),
lineAlignment,
baseLine
);
baseComposer.ShowText(textChunk, textChunkLocation);
baseComposer.End(); // Closes the row object's local state.
}
AddRowObject(obj, lineAlignment);
index = textFitter.EndIndex;
}
// Evaluating trailing text...
while (true)
{
if (index == textLength) // Text end reached.
{
goto endTextShowing;
}
switch (text[index])
{
case '\r':
break;
case '\n':
// New paragraph!
index++;
ShowBreak();
goto endTrailParsing;
default:
// New row (within the same paragraph)!
EndRow(false);
BeginRow();
goto endTrailParsing;
}
index++;
}
endTrailParsing :;
}
endTextShowing :;
if (index >= 0 &&
lineAlignment.Equals(LineAlignmentEnum.BaseLine))
{
lastFontSize = fontSize;
}
return(index);
}
public override ContentObject ToInlineObject(PrimitiveComposer composer)
{
ContentObject barcodeObject = composer.BeginLocalState();
{
fonts::Font font = fonts::PdfType1Font.Load(composer.Scanner.Contents.Document, fonts::PdfType1Font.FamilyEnum.Helvetica, false, false);
double fontSize = (DigitGlyphWidth / font.GetWidth(code.Substring(0, 1), 1));
// 1. Bars.
{
double elementX = DigitWidth;
int[] elementWidths = GetElementWidths();
double guardBarIndentY = DigitHeight / 2;
bool isBar = true;
for (int elementIndex = 0; elementIndex < elementWidths.Length; elementIndex++)
{
double elementWidth = elementWidths[elementIndex];
// Dark element?
/*
* NOTE: EAN symbol elements alternate bars to spaces.
*/
if (isBar)
{
composer.DrawRectangle(
SKRect.Create(
(float)elementX,
0,
(float)elementWidth,
(float)(BarHeight + (
// Guard bar?
Array.BinarySearch <int>(GuardBarIndexes, elementIndex) >= 0
? guardBarIndentY // Guard bar.
: 0 // Symbol character.
))
)
);
}
elementX += elementWidth;
isBar = !isBar;
}
composer.Fill();
}
// 2. Digits.
{
composer.SetFont(font, fontSize);
double digitY = BarHeight + (DigitHeight - (font.GetAscent(fontSize))) / 2;
// Showing the digits...
for (int digitIndex = 0; digitIndex < 13; digitIndex++)
{
string digit = code.Substring(digitIndex, 1);
double pX = DigitGlyphXs[digitIndex] // Digit position.
- font.GetWidth(digit, fontSize) / 2; // Centering.
// Show the current digit!
composer.ShowText(
digit,
new SKPoint((float)pX, (float)digitY)
);
}
}
composer.End();
}
return(barcodeObject);
}
public FormXObject Build(
)
{
bool isRound = type == TypeEnum.Round;
bool isStriped = type == TypeEnum.Striped;
double textScale = .5;
double borderWidth = this.borderWidth.GetValue(width);
double doubleBorderGap = borderDoubled ? borderWidth : 0;
double fontSize = 10;
fontSize *= ((width - (isStriped ? 2 : doubleBorderGap * 2 + (borderWidth * (borderDoubled ? 1.5 : 1) * 2) + width * (isRound ? .15 : .05))) / textScale) / font.GetWidth(text, fontSize);
float height = (float)(isRound ? width : (font.GetAscent(fontSize) * 1.2 + doubleBorderGap * 2 + (borderWidth * (borderDoubled ? 1.5 : 1) * 2)));
SizeF size = new SizeF(width, height);
FormXObject appearance = new FormXObject(document, size);
{
PrimitiveComposer composer = new PrimitiveComposer(appearance);
if (color != null)
{
composer.SetStrokeColor(color);
composer.SetFillColor(color);
}
composer.SetTextScale(textScale);
composer.SetFont(font, fontSize);
composer.ShowText(text, new PointF(size.Width / 2, (float)(size.Height / 2 - font.GetDescent(fontSize) * .4)), XAlignmentEnum.Center, YAlignmentEnum.Middle, 0);
double borderRadius = isRound ? 0 : this.borderRadius.GetValue((size.Width + size.Height) / 2);
RectangleF prevBorderBox = appearance.Box;
for (int borderStep = 0, borderStepLimit = (borderDoubled ? 2 : 1); borderStep < borderStepLimit; borderStep++)
{
if (borderStep == 0)
{
composer.SetLineWidth(borderWidth);
}
else
{
composer.SetLineWidth(composer.State.LineWidth / 2);
}
float lineWidth = (float)(borderStep > 0 ? composer.State.LineWidth / 2 : borderWidth);
float marginY = (float)(lineWidth / 2 + (borderStep > 0 ? composer.State.LineWidth + doubleBorderGap : 0));
float marginX = isStriped ? 0 : marginY;
RectangleF borderBox = new RectangleF(prevBorderBox.X + marginX, prevBorderBox.Y + marginY, prevBorderBox.Width - marginX * 2, prevBorderBox.Height - marginY * 2);
if (isRound)
{
composer.DrawEllipse(borderBox);
}
else
{
if (isStriped)
{
composer.DrawLine(new PointF(borderBox.Left, borderBox.Top), new PointF(borderBox.Right, borderBox.Top));
composer.DrawLine(new PointF(borderBox.Left, borderBox.Bottom), new PointF(borderBox.Right, borderBox.Bottom));
}
else
{
composer.DrawRectangle(borderBox, borderRadius * (1 - .5 * borderStep));
}
}
composer.Stroke();
prevBorderBox = borderBox;
}
composer.Flush();
}
return(appearance);
}