//
// overrides
//
#region protected override void DoPushComponentLayout(PDFLayoutContext context, int pageIndex, PDFUnit xoffset, PDFUnit yoffset)
/// <summary>
/// Overrides the default behaviour to push any arrangements for the child item of this region
/// </summary>
/// <param name="context"></param>
protected override void DoPushComponentLayout(PDFLayoutContext context, int pageIndex, PDFUnit xoffset, PDFUnit yoffset)
{
bool logdebug = context.ShouldLogDebug;
if (logdebug)
{
context.TraceLog.Begin(TraceLevel.Debug, "Layout Region", "Pushing the component layout for the region " + this.ToString());
}
if (!this.IsClosed)
{
if (logdebug)
{
context.TraceLog.Add(TraceLevel.Debug, PDFLayoutItem.LOG_CATEGORY, "Closing the region " + this.ToString() + " before pushing the layout");
}
this.Close();
}
if (this._contents == null || this.Contents.Count == 0)
{
if (logdebug)
{
context.TraceLog.Add(TraceLevel.Debug, PDFLayoutItem.LOG_CATEGORY, "The region " + this.ToString() + " is empty. Exiting the push component early.");
}
return;
}
bool applyAlignments = this.ShouldApplyAlignment();
if (applyAlignments)
{
VerticalAlignment v = this.VAlignment;
if (v != VerticalAlignment.Top)
{
this.EnsureCorrectHeight();
if (logdebug)
{
context.TraceLog.Add(TraceLevel.Debug, PDFLayoutItem.LOG_CATEGORY, "Adjusting the vertical offset of the region " + this.ToString() + " as it is not top aligned");
}
PDFUnit space = this.AvailableHeight;
if (v == VerticalAlignment.Middle)
{
space = space / 2;
}
yoffset += space;
}
}
HorizontalAlignment h = this.HAlignment;
PDFTextRenderOptions options = (this.Parent as PDFLayoutBlock).FullStyle.CreateTextOptions();
List <PDFTextRunCharacter> cache = new List <PDFTextRunCharacter>();
bool lastwasapplied = false;
foreach (PDFLayoutItem item in this.Contents)
{
PDFUnit itemXOffset = xoffset;
///Individually calculate each lines horizontal offset
if (applyAlignments && h != HorizontalAlignment.Left)
{
PDFUnit space = this.TotalBounds.Width - item.Width;
if (h == HorizontalAlignment.Justified)
{
if (item is PDFLayoutLine)
{
PDFLayoutLine line = item as PDFLayoutLine;
if (logdebug)
{
context.TraceLog.Add(TraceLevel.Debug, PDFLayoutItem.LOG_CATEGORY, "Justifying the textual content of the line " + line.LineIndex);
}
bool didjustify = line.JustifyContent(this.TotalBounds.Width, item.Width, space, false, cache, ref options);
if (!didjustify && lastwasapplied && null != options && !(options.WordSpacing.HasValue || options.CharacterSpacing.HasValue))
{
line.ResetJustifySpacing(options);
}
lastwasapplied = didjustify;
}
space = 0; // reset space to zero as already accounted for.
}
else if (h == HorizontalAlignment.Center)
{
space = space / 2;
}
itemXOffset = itemXOffset + space;
}
item.PushComponentLayout(context, pageIndex, itemXOffset, yoffset);
}
if (logdebug)
{
context.TraceLog.End(TraceLevel.Debug, "Layout Region", "Pushed all the component layouts for the region " + this.ToString());
}
}
