/// <summary>
/// Build (generate) title content
/// </summary>
/// <param name="shape">Title shape</param>
/// <param name="frametitle">Frame title record</param>
/// <param name="passNumber">Number of current pass</param>
/// <param name="pauseCounter">Number of processed pause commands</param>
/// <param name="paused">output - processing of title was paused</param>
/// <returns>true if title is complete; false if needs another pass</returns>
public bool BuildTitle(PowerPoint.Shape shape, FrametitleRecord frametitle, int passNumber, int pauseCounter, out bool paused)
{
_passNumber = passNumber;
_pauseCounter = pauseCounter;
_localPauseCounter = 0;
// prepare shape
shape.TextFrame2.TextRange.ParagraphFormat.SpaceWithin = 0.8f;
shape.TextFrame2.AutoSize = MsoAutoSize.msoAutoSizeShapeToFitText;
shape.TextFrame2.MarginBottom = 15.0f;
// following values are theme dependent (in earlier version themes wasn't used)
//shape.TextFrame2.TextRange.ParagraphFormat.Alignment = MsoParagraphAlignment.msoAlignLeft;
//shape.TextFrame2.VerticalAnchor = MsoVerticalAnchor.msoAnchorTop;
//shape.ScaleWidth(1.085f, MsoTriState.msoFalse, MsoScaleFrom.msoScaleFromMiddle);
// setup overlays for title
_maxPass = Math.Max(Misc.MaxOverlay(frametitle.TitleOverlaySet), _maxPass);
_maxPass = Math.Max(Misc.MaxOverlay(frametitle.SubtitleOverlaySet), _maxPass);
// generate title
TextFormat textformat = new TextFormat(_baseFontSize, true);
textformat.ModifyFormat(new Node("Large")); // in beamer title font size is same as \Large
paused = !BuildTitlePart(shape, frametitle.Title, textformat);
if (!paused && frametitle.Subtitle != null)
{
shape.TextFrame2.TextRange.InsertAfter("\r");
// generate subtitle
textformat = new TextFormat(_baseFontSize);
textformat.ModifyFormat(new Node("footnotesize")); // in beamer subtitle font size is same as \footnotesize
paused = !BuildTitlePart(shape, frametitle.Subtitle, textformat);
}
return _passNumber >= _maxPass;
}
/// <summary>
/// Build (generate) title part.
/// </summary>
/// <param name="shape">Prepared title shape</param>
/// <param name="content">Title content</param>
/// <param name="format">Text format</param>
/// <returns>true if completed; false if paused</returns>
private bool BuildTitlePart(PowerPoint.Shape shape, List<Node> content, TextFormat format)
{
if (content.Count == 0) // ignore empty node
return true;
Stack<Node> nodes = new Stack<Node>();
// copy content to stack
foreach (Node item in content.Reverse<Node>())
{
nodes.Push(item);
}
Node currentNode;
Node rollbackNode = new Node("__format_pop");
// process nodes on stack
while (nodes.Count != 0)
{
currentNode = nodes.Pop();
// process node depending on its type
switch (currentNode.Type)
{
case "bold":
case "italic":
case "underline":
case "smallcaps":
case "typewriter":
case "color":
case "tiny":
case "scriptsize":
case "footnotesize":
case "small":
case "normalsize":
case "large":
case "Large":
case "LARGE":
case "huge":
case "Huge":
// check overlay settings
int min = currentNode.OverlayList.Count != 0 ? currentNode.OverlayList.Min() : int.MaxValue;
_maxPass = Math.Max(Misc.MaxOverlay(currentNode.OverlayList), _maxPass); // set maximal number of passes from overlay specification
if (currentNode.OverlayList.Count == 0 || currentNode.OverlayList.Contains(_passNumber) || min < 0 && Math.Abs(min) < _passNumber)
{
format.ModifyFormat(currentNode);
nodes.Push(rollbackNode);
}
break;
case "__format_pop": // special node -> pop formatting from stack
format.RollBackFormat();
break;
case "string":
format.AppendText(shape, currentNode.Content as string);
break;
case "paragraph":
format.AppendText(shape, "\r");
break;
case "today":
shape.TextFrame.TextRange.InsertDateTime(PowerPoint.PpDateTimeFormat.ppDateTimeFigureOut, MsoTriState.msoTrue);
break;
case "pause":
_localPauseCounter++;
if (_localPauseCounter > _pauseCounter)
{
if (_passNumber == _maxPass) // increase number of passes
_maxPass++;
return false;
}
break;
default: // unknown node -> ignore
break;
}
if (currentNode.Children == null)
continue;
// push child nodes to stack
foreach (Node item in currentNode.Children.Reverse<Node>())
{
nodes.Push(item);
}
}
return true;
}