protected override void OnRender(DrawingContext drawingContext)
{
base.OnRender(drawingContext);
Rect rect = new Rect(0.0, 0.0, base.ActualWidth, base.ActualHeight);
JapaneseTextSource source = new JapaneseTextSource();
source.Text = this.Text;
JapaneseTextParagraphProperties textParagraphProperties = this.MakeTextProperties();
source.JapaneseTextRunProperties = (JapaneseTextRunProperties)textParagraphProperties.DefaultTextRunProperties;
source.IsVarticalWriting = textParagraphProperties.IsVerticalWriting;
if (textParagraphProperties.DefaultTextRunProperties.BackgroundBrush != null)
{
drawingContext.DrawRectangle(textParagraphProperties.DefaultTextRunProperties.BackgroundBrush, null, rect);
}
Rect paddingRect = new Rect(this.Padding.Left, this.Padding.Top, Math.Max(0.0, base.ActualWidth - this.Padding.Left - this.Padding.Right), Math.Max(0.0, base.ActualHeight - this.Padding.Top - this.Padding.Bottom));
Point center = new Point((paddingRect.Left + paddingRect.Right) / 2.0, (paddingRect.Top + paddingRect.Bottom) / 2.0);
Point startPosition;
double paragraphWidth;
if (textParagraphProperties.IsVerticalWriting)
{
Point origin = paddingRect.TopRight;
Transform transOrigin = new RotateTransform(-90.0, center.X, center.Y);
startPosition = transOrigin.Transform(origin);
paragraphWidth = Math.Abs(paddingRect.Height);
Transform trans = new RotateTransform(90.0, center.X, center.Y);
drawingContext.PushTransform(trans);
}
else
{
startPosition = paddingRect.TopLeft;
paragraphWidth = Math.Abs(paddingRect.Width);
}
startPosition.Y += textParagraphProperties.JapaneseTextRunProperties.FontRenderingEmSize;
int textStorePosition = 0;
Point linePosition = startPosition;
TextFormatter formatter = TextFormatter.Create();
while (textStorePosition < source.Text.Length)
{
using (TextLine textLine = formatter.FormatLine(source, textStorePosition, paragraphWidth, textParagraphProperties, null))
{
foreach (IndexedGlyphRun indexedrun in textLine.GetIndexedGlyphRuns())
{
if (textParagraphProperties.IsVerticalWriting)
{
source.UniscribeIndexedGlyphRun(indexedrun);
Rect runRect;
if (source.GlyphCount != 0 && source.Glyphs[0] != 0)
{
Point ansiLinePosition = linePosition;
ansiLinePosition.Y -= textParagraphProperties.JapaneseTextRunProperties.FontRenderingEmSize / 2.0;
runRect = this.DrawIndexedGlyphRun(drawingContext, indexedrun, ansiLinePosition, source, true);
}
else
{
Point ansiLinePosition = linePosition;
ansiLinePosition.Y -= textParagraphProperties.JapaneseTextRunProperties.FontRenderingEmSize / 10.0;
runRect = this.DrawIndexedGlyphRun(drawingContext, indexedrun, ansiLinePosition, source, false);
}
linePosition.X += runRect.Width;
}
else
{
Rect runRect = this.DrawIndexedGlyphRun(drawingContext, indexedrun, linePosition, source, false);
linePosition.X += runRect.Width;
}
}
textStorePosition += textLine.Length;
linePosition.X = startPosition.X;
linePosition.Y += textLine.Height;
}
}
if (textParagraphProperties.IsVerticalWriting)
{
drawingContext.Pop();
}
}
private void Render(Point location, string colour)
{
int textStorePosition = 0;
bool flipped;
Position = location;
if (ParentAtom == null)
{
flipped = false;
}
else
{
flipped = Flipped;
}
var textStore = new FunctionalGroupTextSource(ParentGroup, colour, flipped);
//main textformatter - this does the writing of the visual
using (TextFormatter textFormatter = TextFormatter.Create())
{
//set up the default paragraph properties
var paraprops = new FunctionalGroupTextSource.GenericTextParagraphProperties(
FlowDirection.LeftToRight,
TextAlignment.Left,
true,
false,
new LabelTextRunProperties(colour),
TextWrapping.NoWrap,
GlyphText.SymbolSize,
0d);
var anchorRuns = textStore.Runs.Where(f => f.IsAnchor);
string anchorString = string.Empty;
foreach (var run in anchorRuns)
{
anchorString += run.Text;
}
using (TextLine myTextLine =
textFormatter.FormatLine(textStore, textStorePosition, 999, paraprops, null))
{
IList <TextBounds> textBounds;
Rect firstRect = Rect.Empty;
if (!Flipped) //isolate them at the beginning
{
textBounds = myTextLine.GetTextBounds(0, anchorString.Length);
}
else
{
//isolate them at the end
var start = myTextLine.Length - 1 - anchorString.Length;
textBounds = myTextLine.GetTextBounds(start, anchorString.Length);
}
//add all the bounds together
foreach (TextBounds anchorBound in textBounds)
{
firstRect.Union(anchorBound.Rectangle);
}
//center will be position close to the origin 0,0
Point center = new Point((firstRect.Left + firstRect.Right) / 2,
(firstRect.Top + firstRect.Bottom) / 2);
//the displacement vector will be added to each relative coordinate for the glyph run
var displacementVector = location - center;
//locus is where the text line is drawn
var locus = new Point(0, 0) + displacementVector;
textBounds = myTextLine.GetTextBounds(0, 999);
var obb = textBounds[0].Rectangle;
//draw the line of text
using (DrawingContext dc = RenderOpen())
{
myTextLine.Draw(dc, locus, InvertAxes.None);
#if DEBUG
#if SHOWBOUNDS
obb.Offset(new Vector(locus.X, locus.Y));
dc.DrawRectangle(null, new Pen(new SolidColorBrush(Colors.BlueViolet), 1.0), obb);
#endif
#endif
var glyphRuns = myTextLine.GetIndexedGlyphRuns();
List <Point> outline = new List <Point>();
double advanceWidths = 0d;
//build up the convex hull from each glyph
//you need to add in the advance widths for each
//glyph run as they are traversed,
//to the outline
foreach (IndexedGlyphRun igr in glyphRuns)
{
var originalRun = textStore.GetTextRun(igr.TextSourceCharacterIndex);
var currentRun = igr.GlyphRun;
//need to work out how much the current run has been offset from the baseline
var runBounds =
myTextLine.GetTextBounds(igr.TextSourceCharacterIndex, igr.TextSourceLength);
//get the bounding rect
var rect = runBounds[0].TextRunBounds[0].Rectangle;
//it's relative to the baseline
//adjust it
rect.Offset(new Vector(locus.X, locus.Y));
var rectCopy = rect;
#if DEBUG
#if SHOWBOUNDS
dc.DrawRectangle(null, new Pen(new SolidColorBrush(Colors.DarkOrange), 1.0), rect);
#endif
#endif
var runOutline = GlyphUtils.GetOutline(currentRun);
//need to see if the run has been super or sub-scripted
var variants = originalRun.Properties.TypographyProperties.Variants;
if (variants == FontVariants.Subscript || variants == FontVariants.Superscript)
{
//simply union in the rect -it's easier!
outline.AddRange(new[]
{
rectCopy.BottomLeft, rectCopy.BottomRight, rectCopy.TopLeft,
rectCopy.TopRight
});
}
else
{
//add in the points from the convex hull
for (int i = 0; i < runOutline.Count; i++)
{
var point = runOutline[i] + displacementVector +
new Vector(0.0, myTextLine.Baseline);
point.X += advanceWidths;
runOutline[i] = point;
}
outline.AddRange(runOutline);
}
advanceWidths += currentRun.AdvanceWidths.Sum();
}
_sortedOutline = (from Point p in outline
orderby p.X ascending, p.Y descending
select p).ToList();
Hull = Geometry <Point> .GetHull(_sortedOutline, p => p);
// Diag: Show Hulls or Atom centres
#if DEBUG
#if SHOWHULLS
dc.DrawGeometry(null, new Pen(Brushes.GreenYellow, thickness: 1), HullGeometry);
#endif
#if SHOWATOMCENTRES
dc.DrawEllipse(Brushes.Red, null, ParentAtom.Position, 5, 5);
#endif
#endif
// End Diag
dc.Close();
}
}
}
}
public static void HandleLine2(TextLine?myTextLine,
Point linePosition, int lineNo, int textStorePosition,
object?change,
ILineInfo2Base?curLineInfo = null, BTree <TextRunInfo>?btRuns = null, Action <CharInfo, ILineInfo2Base>?takeChar = null)
{
var curPos = linePosition;
var indexedGlyphRuns = myTextLine?.GetIndexedGlyphRuns();
// var z = new List<TextRunInfo>();
// btRuns?.DescendGreaterThan(new TextRunInfo(null, textStorePosition - 1),
// info =>
// {
// z.Add(info);
// return info.Value < textStorePosition + length;
// });
// using (var enum2 = z.GetEnumerator())
{
// var moveNext2 = enum2.MoveNext();
var lineCharIndex = 0;
var xOrigin = linePosition.X + myTextLine !.Start;
if (indexedGlyphRuns == null)
{
return;
}
var lineRun = 0;
foreach (var glyphRunC in indexedGlyphRuns)
{
var gl = glyphRunC.GlyphRun;
var advanceSum = gl.AdvanceWidths.Sum();
for (var i = 0; i < gl.Characters.Count; i++)
{
var i0 = gl.ClusterMap?[i] ?? i;
var glAdvanceWidth = gl.AdvanceWidths[i0];
var glCharacter = gl.Characters[i];
var glCaretStop = gl.CaretStops?[i0];
var glyphIndex = gl.GlyphIndices[i0];
var storePosition = textStorePosition + lineCharIndex;
// Trace.WriteLine("char line " + lineNo + "[" + storePosition + "]: " + glCharacter);
var ci = new CharInfo(lineNo, storePosition, lineCharIndex, i,
glCharacter, glAdvanceWidth,
glCaretStop, xOrigin, linePosition.Y, gl.GlyphTypeface.Height * gl.FontRenderingEmSize, gl.ComputeAlignmentBox(),
gl.BaselineOrigin, glyphIndex, gl.GlyphTypeface, gl.FontRenderingEmSize, lineRun);
takeChar !(ci, curLineInfo !);
lineCharIndex++;
xOrigin += glAdvanceWidth;
}
lineRun++;
// var item = new Rect(curPos, new Size(advanceSum, myTextLine.Height));
// if (!moveNext2)
// {w
// var sb = new StringBuilder();
// for (var c = curCharInfoNode; c != null; c = c.Next) sb.Append(c.Value.Character);
//
// throw new CodeControlException("enumerator empty " + sb);
// }
// if (prevTri?.TextRun != null && prevTri != null && offset < prevTri.Value + prevTri.TextRun.Length)
// {
// prevTri.Rect.Union(item);
// }
// else
// {
// var textRunInfo = new TextRunInfo(offset);
// var tri = btRuns?.Get(textRunInfo);
// if (tri == null)
// {
// var sb = new StringBuilder();
// for (var c = curCharInfoNode; c != null; c = c.Next) sb.Append(c.Value.Character);
// throw new CodeControlException("Unable to find entry for " + offset);
// }
//
// tri.Rect = item;
//
// rectBtree?.ReplaceOrInsert(new RectInfo(tri.Rect, offset, tri.TextRun));
//
// prevTri = tri;
// }
curPos.X += advanceSum;
}
}
#pragma warning disable 8601
#pragma warning restore 8601
}