public FontKey(string fontFamily, float fontSize, Windows.UI.Text.FontWeight fontWeight, Windows.UI.Text.FontStyle fontStyle)
{
this.FontFamily = fontFamily;
this.FontSize = fontSize;
this.FontWeight = fontWeight;
this.FontStyle = fontStyle;
}
private FontKey FontKeyFromStyle(Style style)
{
var fontSize = mm2px(style.FontSize, dpiY);
var fontWeight = new Windows.UI.Text.FontWeight()
{
Weight = (ushort)style.FontWeight
};
var fontStyle = Windows.UI.Text.FontStyle.Normal;
if (style.FontStyle == "italic")
{
fontStyle = Windows.UI.Text.FontStyle.Italic;
}
else if (style.FontStyle == "oblique")
{
fontStyle = Windows.UI.Text.FontStyle.Oblique;
}
return(new FontKey(style.FontFamily, fontSize, fontWeight, fontStyle));
}
public static string GetWeightName(Windows.UI.Text.FontWeight weight)
{
return($"{Utils.GetWeightName(weight)} - {weight.Weight}");
}
public Rectangle[] GetCharacterBoundingBoxes(Text text, TextSpan[] spans)
{
var label = text.Label;
var rects = new List <Rectangle>();
var firstStyle = spans.First().Style;
var myTEE = StringInfo.GetTextElementEnumerator(label);
var textFormat = new CanvasTextFormat()
{
FontSize = mm2px(firstStyle.FontSize, dpiY),
};
var firstChar = label.FirstOrDefault();
textFormat.FontFamily = firstStyle.FontFamily;
var canvasTextLayout = new CanvasTextLayout(CanvasDevice.GetSharedDevice(), label, textFormat, float.MaxValue, float.MaxValue);
var beginCharPosition = 0;
var charCount = label.Length - 1;
// Construct the string with different styles
for (var i = 0; i < spans.Length; ++i)
{
var style = spans[i].Style;
if (spans.Length > 0)
{
var interval = spans.ElementAt(i);
beginCharPosition = interval.BeginPosition;
charCount = (int)(interval.EndPosition - interval.BeginPosition) + 1;
}
var fontWeight = new Windows.UI.Text.FontWeight();
fontWeight.Weight = (ushort)style.FontWeight;
var fontStyle = Windows.UI.Text.FontStyle.Normal;
if (style.FontStyle == "italic")
{
fontStyle = Windows.UI.Text.FontStyle.Italic;
}
else if (style.FontStyle == "oblique")
{
fontStyle = Windows.UI.Text.FontStyle.Oblique;
}
canvasTextLayout.SetFontSize(beginCharPosition, charCount, mm2px(firstStyle.FontSize, dpiY));
canvasTextLayout.SetFontWeight(beginCharPosition, charCount, fontWeight);
canvasTextLayout.SetFontStyle(beginCharPosition, charCount, fontStyle);
canvasTextLayout.SetFontFamily(beginCharPosition, charCount, style.FontFamily);
}
var baseline = canvasTextLayout.LineMetrics[0].Baseline;
while (myTEE.MoveNext())
{
var canvasCharLayout = new CanvasTextLayout(CanvasDevice.GetSharedDevice(), myTEE.GetTextElement(), textFormat, 2000, 1000);
canvasCharLayout.SetFontSize(0, 1, canvasTextLayout.GetFontSize(myTEE.ElementIndex));
canvasCharLayout.SetFontStyle(0, 1, canvasTextLayout.GetFontStyle(myTEE.ElementIndex));
canvasCharLayout.SetFontWeight(0, 1, canvasTextLayout.GetFontWeight(myTEE.ElementIndex));
canvasCharLayout.SetFontFamily(0, 1, canvasTextLayout.GetFontFamily(myTEE.ElementIndex));
var drawCharBounds = canvasCharLayout.DrawBounds;
var v2 = canvasTextLayout.GetCaretPosition(myTEE.ElementIndex, false);
var newX = (float)drawCharBounds.X + v2.X;
var newY = (float)drawCharBounds.Y - baseline;
//Need to do little translation to clip to the line
rects.Add(new Rectangle(px2mm(newX, dpiX), px2mm(newY, dpiY), px2mm((float)drawCharBounds.Width, dpiX), px2mm((float)drawCharBounds.Height, dpiY)));
}
return(rects.ToArray());
}
/// <summary>
/// Creates a <see cref="FontWeight"/> from <see cref="windows.UI.Text.FontWeight"/>.
/// </summary>
/// <param name="args">The <see cref="windows.UI.Text.FontWeight"/> instance containing the event data.</param>
/// <returns><see cref="FontWeight"/></returns>
public static FontWeight FromFontWeight(windows.UI.Text.FontWeight args)
{
return(new FontWeight(args));
}
/// <summary>
/// Initializes a new instance of the <see cref="FontWeight"/> class, a
/// Wpf-enabled wrapper for <see cref="windows.UI.Text.FontWeight"/>
/// </summary>
public FontWeight(windows.UI.Text.FontWeight instance)
{
this.UwpInstance = instance;
}
