private void Load(
)
{
ContentParser parser = new ContentParser(new ContentStream(BaseDataObject));
items = parser.ParseContentObjects();
}
private void RefreshAppearance(
)
{
Widget widget = Widgets[0];
FormXObject normalAppearance;
{
AppearanceStates normalAppearances = widget.Appearance.Normal;
normalAppearance = normalAppearances[null];
if (normalAppearance == null)
{
normalAppearances[null] = normalAppearance = new FormXObject(Document, widget.Box.Size);
}
}
PdfName fontName = null;
double fontSize = 0;
{
PdfString defaultAppearanceState = DefaultAppearanceState;
if (defaultAppearanceState == null)
{
// Retrieving the font to define the default appearance...
fonts::Font defaultFont = null;
PdfName defaultFontName = null;
{
// Field fonts.
FontResources normalAppearanceFonts = normalAppearance.Resources.Fonts;
foreach (KeyValuePair <PdfName, fonts::Font> entry in normalAppearanceFonts)
{
if (!entry.Value.Symbolic)
{
defaultFont = entry.Value;
defaultFontName = entry.Key;
break;
}
}
if (defaultFontName == null)
{
// Common fonts.
FontResources formFonts = Document.Form.Resources.Fonts;
foreach (KeyValuePair <PdfName, fonts::Font> entry in formFonts)
{
if (!entry.Value.Symbolic)
{
defaultFont = entry.Value;
defaultFontName = entry.Key;
break;
}
}
if (defaultFontName == null)
{
//TODO:manage name collision!
formFonts[
defaultFontName = new PdfName("default")
] = defaultFont = new fonts::StandardType1Font(
Document,
fonts::StandardType1Font.FamilyEnum.Helvetica,
false,
false
);
}
normalAppearanceFonts[defaultFontName] = defaultFont;
}
}
bytes::Buffer buffer = new bytes::Buffer();
new SetFont(defaultFontName, IsMultiline ? 10 : 0).WriteTo(buffer, Document);
widget.BaseDataObject[PdfName.DA] = defaultAppearanceState = new PdfString(buffer.ToByteArray());
}
// Retrieving the font to use...
ContentParser parser = new ContentParser(defaultAppearanceState.ToByteArray());
foreach (ContentObject content in parser.ParseContentObjects())
{
if (content is SetFont)
{
SetFont setFontOperation = (SetFont)content;
fontName = setFontOperation.Name;
fontSize = setFontOperation.Size;
break;
}
}
normalAppearance.Resources.Fonts[fontName] = Document.Form.Resources.Fonts[fontName];
}
// Refreshing the field appearance...
/*
* TODO: resources MUST be resolved both through the apperance stream resource dictionary and
* from the DR-entry acroform resource dictionary
*/
PrimitiveComposer baseComposer = new PrimitiveComposer(normalAppearance);
BlockComposer composer = new BlockComposer(baseComposer);
ContentScanner currentLevel = composer.Scanner;
bool textShown = false;
while (currentLevel != null)
{
if (!currentLevel.MoveNext())
{
currentLevel = currentLevel.ParentLevel;
continue;
}
ContentObject content = currentLevel.Current;
if (content is MarkedContent)
{
MarkedContent markedContent = (MarkedContent)content;
if (PdfName.Tx.Equals(((BeginMarkedContent)markedContent.Header).Tag))
{
// Remove old text representation!
markedContent.Objects.Clear();
// Add new text representation!
baseComposer.Scanner = currentLevel.ChildLevel; // Ensures the composer places new contents within the marked content block.
ShowText(composer, fontName, fontSize);
textShown = true;
}
}
else if (content is Text)
{
currentLevel.Remove();
}
else if (currentLevel.ChildLevel != null)
{
currentLevel = currentLevel.ChildLevel;
}
}
if (!textShown)
{
baseComposer.BeginMarkedContent(PdfName.Tx);
ShowText(composer, fontName, fontSize);
baseComposer.End();
}
baseComposer.Flush();
}