/**
* <summary>Shows the specified external object.</summary>
* <param name="xObject">External object.</param>
* <param name="size">Size of the external object.</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>Whether the external object was successfully shown.</returns>
*/
public bool ShowXObject(
xObjects::XObject xObject,
SizeF?size,
object lineAlignment
)
{
if (xObject == null ||
!EnsureRow(true))
{
return(false);
}
if (!size.HasValue)
{
size = xObject.Size;
}
lineAlignment = ResolveLineAlignment(lineAlignment);
while (true)
{
if (OperationUtils.Compare(currentRow.Y + size.Value.Height, frame.Height) == 1) // Object's height exceeds block's remaining vertical space.
{
// Terminate current row and exit!
EndRow(false);
return(false);
}
else if (OperationUtils.Compare(currentRow.Width + size.Value.Width, frame.Width) < 1) // There's room for the object in the current row.
{
PointF location = new PointF(
(float)currentRow.Width,
(float)currentRow.Y
);
RowObject obj;
{
obj = new RowObject(
RowObject.TypeEnum.XObject,
baseComposer.BeginLocalState(), // Opens the row object's local state.
size.Value.Height,
size.Value.Width,
0,
lineAlignment,
size.Value.Height,
0,
0
);
baseComposer.ShowXObject(xObject, location, size);
baseComposer.End(); // Closes the row object's local state.
}
AddRowObject(obj, lineAlignment);
return(true);
}
else // There's NOT enough room for the object in the current row.
{
// Go to next row!
EndRow(false);
BeginRow();
}
}
}
/**
* <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);
}
