public override void DrawPageArea(LayoutPageArea pageArea)
{
Rectangle lineNumberBounds = new Rectangle(new Point(-LineNumberPadding, 0), new Size(LineNumberPadding, pageArea.Bounds.Height));
Canvas.FillRectangle(new RichEditBrush(NumberingHighlightColor), lineNumberBounds);
base.DrawPageArea(pageArea);
previousColumnIndex = -1;
}
void TryScrollToFooter(LayoutElement element)
{
LayoutFooter footer = element as LayoutFooter;
if (footer == null)
{
footer = element.GetParentByType <LayoutFooter>();
}
if (footer == null)
{
return;
}
LayoutPageArea nearestPageArea = ((LayoutPage)footer.Parent).PageAreas.Last;
ScrollToPosition(nearestPageArea.Range.Start + nearestPageArea.Range.Length - 1);
}
void TryScrollToHeader(LayoutElement element)
{
LayoutHeader header = element as LayoutHeader;
if (header == null)
{
header = element.GetParentByType <LayoutHeader>();
}
if (header == null)
{
return;
}
LayoutPageArea nearestPageArea = ((LayoutPage)header.Parent).PageAreas.First;
ScrollToPosition(nearestPageArea.Range.Start);
}
private void btnPositionInfo_Click(object sender, EventArgs e)
{
#region #GetPageForPosition
SubDocument subDoc = richEditControl1.Document.CaretPosition.BeginUpdateDocument();
DocumentPosition pos = subDoc.CreatePosition(richEditControl1.Document.CaretPosition.ToInt() == 0 ? 0 : richEditControl1.Document.CaretPosition.ToInt() - 1);
LayoutPageArea pageArea = richEditControl1.DocumentLayout.GetElement(pos, LayoutType.PageArea) as LayoutPageArea;
LayoutPage page = pageArea.GetParentByType <LayoutPage>();
if (page != null)
{
string s = String.Format("The caret is on the page with index={0}\r\n" +
"The page starts at document position {1},\r\n" +
"the range length of the page content is {2}.\r\n",
page.Index, page.MainContentRange.Start, page.MainContentRange.Length);
lblPageInfo.Text = s;
}
richEditControl1.Document.CaretPosition.EndUpdateDocument(subDoc);
#endregion #GetPageForPosition
}
public override void DrawColumn(LayoutColumn column)
{
LayoutPageArea pageArea = column.GetParentByType <LayoutPageArea>();
if (pageArea != null)
{
int leftBoundary = 0;
if (previousColumnIndex >= 0)
{
leftBoundary = pageArea.Columns[previousColumnIndex].Bounds.Right;
}
if (column.LineNumbers.Count > 0)
{
HighlightLineNumberingArea(column, leftBoundary);
}
previousColumnIndex++;
}
base.DrawColumn(column);
}
public static PageAreaProperties CaculatePageAreaProperties(LayoutPageArea pageArea, DocumentPosition pos)
{
PageAreaProperties pageAreaProperties = new PageAreaProperties();
pageAreaProperties.columnCount = pageArea.Columns.Count;
pageAreaProperties.currentPageBounds.Location = pageArea.Columns[0].Bounds.Location;
for (int i = 0; i < pageArea.Columns.Count; i++)
{
int currentColumnContentHeight = pageArea.Columns[i].Rows.Last.Bounds.Bottom - pageArea.Columns[i].Rows.First.Bounds.Top;
if (pageArea.Columns[i].Range.Contains(pos.ToInt()))
{
pageAreaProperties.currentColumnIndex = i;
pageAreaProperties.currentColumnBounds.Location = pageArea.Columns[i].Bounds.Location;
pageAreaProperties.currentColumnBounds.Width = pageArea.Columns[i].Bounds.Width;
pageAreaProperties.currentColumnBounds.Height = currentColumnContentHeight;
}
pageAreaProperties.currentPageBounds.Width += pageArea.Columns[i].Bounds.Width;
pageAreaProperties.currentPageBounds.Height = Math.Max(pageAreaProperties.currentPageBounds.Height, currentColumnContentHeight);
}
return(pageAreaProperties);
}
protected override void VisitPageArea(LayoutPageArea pageArea)
{
TryAddElementToCollection(pageArea, ContentDisplayAction.Select, true);
base.VisitPageArea(pageArea);
}
public override void DrawPageArea(LayoutPageArea pageArea)
{
base.DrawPageArea(pageArea);
HighlightElement(pageArea);
}
void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
if (!(e.Node.IsSelected) || e.Node.Tag == null)
{
return;
}
// Rebuild the tree if required.
rebuild = true;
richEditControl1.Document.ChangeActiveDocument(richEditControl1.Document);
LayoutElement element = layoutTreeDictionary[e.Node];
RangedLayoutElement rangedElement = element as RangedLayoutElement;
// Select a range or scroll to a document position, according to the type of the layout element.
if ((ContentDisplayAction)e.Node.Tag == ContentDisplayAction.ScrollTo)
{
LayoutPage page = element.GetParentByType <LayoutPage>();
LayoutPageArea nearestPageArea = page.PageAreas[0];
if ((element.Type == LayoutType.Header) || (element.GetParentByType <LayoutHeader>() != null))
{
ScrollToPosition(nearestPageArea.Range.Start);
}
if ((element.Type == LayoutType.Footer) || (element.GetParentByType <LayoutFooter>() != null))
{
ScrollToPosition(nearestPageArea.Range.Start + nearestPageArea.Range.Length);
}
LayoutFloatingObject layoutFloatingObject = element as LayoutFloatingObject;
if (layoutFloatingObject != null)
{
FloatingObjectAnchorBox anchor = layoutFloatingObject.AnchorBox;
ScrollToPosition(anchor.Range.Start);
richEditControl1.Document.Selection = richEditControl1.Document.CreateRange(anchor.Range.Start, anchor.Range.Length);
}
LayoutComment layoutComment = element as LayoutComment;
if (layoutComment != null)
{
Comment comment = layoutComment.GetDocumentComment();
ScrollToPosition(comment.Range.Start.ToInt());
}
LayoutTextBox textBox = element.GetParentByType <LayoutTextBox>();
if (textBox != null)
{
// Do not rebuild the tree.
rebuild = false;
ScrollToPosition(textBox.AnchorBox.Range.Start);
SubDocument doc = richEditControl1.DocumentLayout.BeginUpdateDocument(textBox);
richEditControl1.Document.ChangeActiveDocument(doc);
richEditControl1.Document.Selection = doc.CreateRange(rangedElement.Range.Start, rangedElement.Range.Length);
richEditControl1.DocumentLayout.EndUpdateDocument(doc);
}
}
else
{
if (rangedElement == null)
{
return;
}
ScrollToPosition(rangedElement.Range.Start);
richEditControl1.Document.Selection = richEditControl1.Document.CreateRange(rangedElement.Range.Start, rangedElement.Range.Length);
}
}
protected override void VisitPageArea(LayoutPageArea pageArea)
{
AddTreeNode(pageArea, ContentDisplayAction.Select);
base.VisitPageArea(pageArea);
}