/**
* <summary>Shows text.</summary>
* <returns>Last shown character index.</returns>
*/
public int ShowText(
string text
)
{
if (currentRow == null ||
text == null)
{
return(0);
}
ContentScanner.GraphicsState state = baseComposer.State;
fonts::Font font = state.Font;
float fontSize = state.FontSize;
float lineHeight = font.GetLineHeight(fontSize);
TextFitter textFitter = new TextFitter(
text,
0,
font,
fontSize,
hyphenation
);
int textLength = text.Length;
int index = 0;
while (true)
{
// Beginning of current row?
if (currentRow.Width == 0)
{
// Removing leading space...
while (true)
{
// Did we reach the text end?
if (index == textLength)
{
goto endTextShowing; // NOTE: I know GOTO is evil, yet in this case it's a much cleaner solution.
}
if (text[index] != ' ')
{
break;
}
index++;
}
}
// Text height: exceeds current row's height?
if (lineHeight > currentRow.Height)
{
// Text height: exceeds block's remaining vertical space?
if (lineHeight > frame.Height - currentRow.Y) // Text exceeds.
{
// Terminate the current row!
EndRow(false);
goto endTextShowing; // NOTE: I know GOTO is evil, yet in this case it's a much cleaner solution.
}
else // Text doesn't exceed.
{
// Adapt current row's height!
currentRow.Height = lineHeight;
}
}
// Does the text fit?
if (textFitter.Fit(
index,
frame.Width - currentRow.Width // Residual row width.
))
{
// Get the fitting text!
string textChunk = textFitter.FittedText;
float textChunkWidth = textFitter.FittedWidth;
PointF textChunkLocation = new PointF(
(float)currentRow.Width,
(float)currentRow.Y
);
// Render the fitting text:
// - open the row object's local state!
/*
* NOTE: This device allows a fine-grained control over the row object's representation.
* It MUST be coupled with a closing statement on row object's end.
*/
RowObject obj = new RowObject(
baseComposer.BeginLocalState(),
lineHeight,
textChunkWidth,
CountOccurrence(' ', textChunk)
);
currentRow.Objects.Add(obj);
currentRow.SpaceCount += obj.SpaceCount;
// - show the text chunk!
baseComposer.ShowText(
textChunk,
textChunkLocation
);
// - close the row object's local state!
baseComposer.End();
// Update ancillary parameters:
// - update row width!
currentRow.Width += textChunkWidth;
// - update cursor position!
index = textFitter.EndIndex;
}
// Evaluating trailing text...
while (true)
{
// Did we reach the text end?
if (index == textLength)
{
goto endTextShowing; // NOTE: I know GOTO is evil, yet in this case it's a much cleaner solution.
}
switch (text[index])
{
case '\r':
break;
case '\n':
// New paragraph!
index++;
ShowBreak();
goto endTrailParsing; // NOTE: I know GOTO is evil, yet in this case it's a much cleaner solution.
default:
// New row (within the same paragraph)!
EndRow(false); BeginRow();
goto endTrailParsing; // NOTE: I know GOTO is evil, yet in this case it's a much cleaner solution.
}
index++;
}
endTrailParsing :;
}
endTextShowing :;
return(index);
}
/**
* <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);
}