protected double CulcRenderWidth(string text, ItemFont itemFont)
{
double width = 0;
ushort glyphIndex;
int glyphType;
for (int i = 0; i < text.Length; i++)
{
width += itemFont.GlyphWidth(text, ref i, out glyphIndex, out glyphType);
}
return(width);
}
protected double RenderText(List <Tuple <Brush, GlyphRun> > textDrawList, String text, ItemFont itemFont, double fontSize, Rect drawRect, double marginLeft, double margintTop, Brush fontColor, bool nowrap = false)
{
double lineHeight = ViewUtil.CulcLineHeight(fontSize);
double x0 = drawRect.Left + marginLeft;
double xMax = drawRect.Right;
double y0 = drawRect.Top + margintTop - (lineHeight - fontSize);//行間オフセット
double yMax = nowrap == true ? y0 : drawRect.Bottom;
double y = y0;
var getRenderHeight = new Func <double>(() => y - y0);
for (int i = 0; i < text.Length;)
{
var glyphIndexes = new List <ushort>();
var advanceWidths = new List <double>();
int currentType = 0;
double x = x0;
double x1 = x0;//currentTypeの書き出しx座標
y += lineHeight;
var AddGlyphRun = new Action(() =>
{
if (glyphIndexes.Count == 0)
{
return;
}
var origin = new Point(Math.Round(x1 * m.M11) / m.M11 - selfLeft, Math.Round(y * m.M22) / m.M22 - selfTop);
textDrawList.Add(new Tuple <Brush, GlyphRun>(fontColor,
new GlyphRun(itemFont.GlyphType[currentType], 0, false, fontSize, glyphIndexes, origin, advanceWidths, null, null, null, null, null, null)));
});
for (; i < text.Length && text[i] != '\r' && text[i] != '\n'; i++)
{
//この辞書検索が負荷の大部分を占めているのでテーブルルックアップする
ushort glyphIndex;
int glyphType;
double width = itemFont.GlyphWidth(text, ref i, out glyphIndex, out glyphType) * fontSize;
if (x + width > xMax)
{
AddGlyphRun();
if (y >= yMax)
{
return(getRenderHeight()); //次の行無理
}
//次の行へ
glyphIndexes = new List <ushort>();
advanceWidths = new List <double>();
x = x1 = x0;
y += lineHeight;
}
else if (glyphType != currentType)
{
//フォントが変わった
AddGlyphRun();
glyphIndexes = new List <ushort>();
advanceWidths = new List <double>();
x1 = x;
}
currentType = glyphType;
glyphIndexes.Add(glyphIndex);
advanceWidths.Add(width);
x += width;
}
AddGlyphRun();
if (y >= yMax)
{
return(getRenderHeight()); //次の行無理
}
i = text.IndexOf('\n', i);
i = i < 0 ? text.Length : i + 1;
}
return(getRenderHeight());
}
