/// <summary>
/// Adds a PdfScriptObject to the page that draws text that autowraps at the given blockWidth.
/// </summary>
/// <param name="page">Page to draw to.</param>
/// <param name="x">X coordinate left-bottom of the first line of text.</param>
/// <param name="y">Y coordinate left-bottom of the first line of text.</param>
/// <param name="text">Text to draw.</param>
/// <param name="blockWidth">Width of the text block.</param>
/// <param name="options">Text options (font, style, etc.)</param>
/// <param name="leftRotationDegrees">Left rotation expressed in degrees.</param>
/// <param name="align">Alignment: -1=left (default), 0=center, +1=right.</param>
/// <remarks>
/// Currently, when alignment is non-left, the rotation arguments is ignored as both are not supported together.
/// </remarks>
public static PdfObjectRef DrawTextblock(this PdfPageWriter page, double x, double y, string text, double blockWidth, PdfTextOptions options, double leftRotationDegrees = 0.0, int align = -1)
{
if (align < 0)
{
return(page.DrawText(x, y, options.Font.SplitText(text, options.FontSize, blockWidth), options, leftRotationDegrees));
}
else
{
var lines = options.Font.SplitText(text.Replace('\r', ' '), options.FontSize, blockWidth).Split('\n');
var obj = new PdfScriptObject();
obj.BeginGraphicsState();
obj.BeginText(x, y, options);
// Centered or right-alignment is not compatible with rotation:
//if (leftRotationDegrees != 0.0) obj.SetTextRotation(x, y, leftRotationDegrees);
var liney = y;
foreach (var line in lines)
{
if (!String.IsNullOrWhiteSpace(line))
{
var tline = line.Trim();
var textwidth = options.Font.GetStringWidth(tline, options.FontSize);
var linex = (align > 0) ? (x + blockWidth - textwidth) : (x + (blockWidth - textwidth) / 2);
obj.SetTextStartPosition(linex, liney);
obj.DrawText(tline);
}
liney -= options.FontSize;
}
obj.EndText();
obj.EndGraphicsState();
return(page.WriteObject(obj));
}
}
/// <summary>
/// Adds a PdfScriptObject to the page that draws text that autowraps at the given blockWidth.
/// </summary>
public static PdfObjectRef DrawTextblock(this PdfPageWriter page, double x, double y, string str, double blockWidth, PdfTextOptions options, double leftRotationDegrees = 0.0)
{
return(page.DrawText(x, y, options.Font.SplitText(str, options.FontSize, blockWidth), options, leftRotationDegrees));
}
