//public override void EndInit()
//{
// base.EndInit();
// InitializeResources();
//}
//private void InitializeResources()
//{
// resourcedTags = new TagCollection();
// foreach (TaggedFontFormat item in TaggedFontFormats)
// {
// //r = item as FontFormat;
// if (item == null) continue;
// resourcedTags.Add(item.Tag);
// item.PrepareTypeface(this);
// }
//}
private void InitializeDefaultFontFormat()
{
DefaultFontFormat = new FontFormat()
{
FontFamily = FontFamily,
FontSize = FontSize,
FontStretch = FontStretch,
FontStyle = FontStyle,
FontWeight = FontWeight,
Foreground = Foreground,
Style = Style,
};
DefaultFontFormat.PrepareTypeface(this);
TryInvalidateDisplay();
}
private void RenderWordRequest(Size renderSize, string currentWord, FontFormat fontFormat, double renderingXPosition, double renderingYPosition, out string remainingWordCharacters, out double wordWidth, out double wordHeight, out bool isRendered, DrawingContext drawingContext = null)
{
isRendered = false;
wordHeight = 0;
remainingWordCharacters = string.Empty;
if (string.IsNullOrEmpty(currentWord))
{
wordWidth = 0;
isRendered = true;
return;
}
var drawingText = currentWord;
var currentCharIndex = 0;
var currentChar = drawingText[currentCharIndex];
var glyphIndexes = new List <ushort>();
var advanceWidths = new List <double>();
//var currentTypeface = fontFormat.typeface;
var currentGlyphTypeface = fontFormat.glyphTypeface;
var currentLineWidth = renderingXPosition;
wordWidth = 0d;
while (currentCharIndex < drawingText.Length)
{
currentChar = drawingText[currentCharIndex];
var isHorizontalSpaceAvailable = true;
if (!UNAVAILABLE_GLYPHS.Contains(currentChar))
{
if (!currentGlyphTypeface.CharacterToGlyphMap.ContainsKey(currentChar))
{
currentChar = '_';
}
var currentCharGlyphIndex = currentGlyphTypeface.CharacterToGlyphMap[currentChar];
var currentCharWidth = currentGlyphTypeface.AdvanceWidths[currentCharGlyphIndex] * fontFormat.FontSize;
wordWidth += currentCharWidth;
currentLineWidth += currentCharWidth;
wordHeight = Math.Max(wordHeight, currentGlyphTypeface.AdvanceHeights[currentCharGlyphIndex] * fontFormat.FontSize);
isHorizontalSpaceAvailable = currentLineWidth < renderSize.Width;
if (currentCharIndex != 0 && renderingXPosition == 0 && !isHorizontalSpaceAvailable)
{
wordWidth -= currentCharWidth;
currentLineWidth -= currentCharWidth;
remainingWordCharacters = currentWord.Substring(currentCharIndex, currentWord.Length - currentCharIndex);
isRendered = false;
break;
}
if (!isHorizontalSpaceAvailable)
{
isRendered = false;
return;
}
glyphIndexes.Add(currentCharGlyphIndex);
advanceWidths.Add(currentCharWidth);
}
currentCharIndex++;
}
if (drawingContext != null)
{
var origin = new Point(renderingXPosition, renderingYPosition + fontFormat.LineHeight.Value);
var glyphRun = new GlyphRun(currentGlyphTypeface, 0, false, fontFormat.FontSize,
glyphIndexes, origin, advanceWidths, null, null, null, null,
null, null);
// Draws the current line
drawingContext.DrawGlyphRun(fontFormat.Foreground == null ? DefaultFontFormat.Foreground : fontFormat.Foreground, glyphRun);
}
if (string.IsNullOrEmpty(remainingWordCharacters))
{
isRendered = true;
}
}
