void OnListBoxSelectionChanged(object sender, SelectionChangedEventArgs args)
{
string fontFamily = (sender as ListBox).SelectedItem as string;
if (fontFamily == null)
{
return;
}
txtblk.FontFamily = new FontFamily(fontFamily);
int index;
if (writeFontCollection.FindFamilyName(fontFamily, out index))
{
WriteFontFamily writeFontFamily = writeFontCollection.GetFontFamily(index);
WriteFont writeFont = writeFontFamily.GetFirstMatchingFont(FontWeights.Normal,
FontStretch.Normal,
FontStyle.Normal);
WriteFontMetrics fontMetrics = writeFont.GetMetrics();
double fontSize = txtblk.FontSize;
double ascent = fontSize * fontMetrics.Ascent / fontMetrics.DesignUnitsPerEm;
double capsHeight = fontSize * fontMetrics.CapHeight / fontMetrics.DesignUnitsPerEm;
double xHeight = fontSize * fontMetrics.XHeight / fontMetrics.DesignUnitsPerEm;
double descent = fontSize * fontMetrics.Descent / fontMetrics.DesignUnitsPerEm;
double lineGap = fontSize * fontMetrics.LineGap / fontMetrics.DesignUnitsPerEm;
baselineLine.Y1 = baselineLine.Y2 = ascent;
capsHeightLine.Y1 = capsHeightLine.Y2 = ascent - capsHeight;
xHeightLine.Y1 = xHeightLine.Y2 = ascent - xHeight;
descenderLine.Y1 = descenderLine.Y2 = ascent + descent;
lineGapLine.Y1 = lineGapLine.Y2 = ascent + descent + lineGap;
}
}
void OnListBoxSelectionChanged(object sender, SelectionChangedEventArgs args)
{
string fontFamily = (sender as ListBox).SelectedItem as string;
if (fontFamily == null)
{
return;
}
foregroundTextBlock.FontFamily = new FontFamily(fontFamily);
shadowTextBlock.FontFamily = foregroundTextBlock.FontFamily;
int index;
if (writeFontCollection.FindFamilyName(fontFamily, out index))
{
WriteFontFamily writeFontFamily = writeFontCollection.GetFontFamily(index);
WriteFont writeFont = writeFontFamily.GetFirstMatchingFont(FontWeights.Normal,
FontStretch.Normal,
FontStyle.Normal);
WriteFontMetrics fontMetrics = writeFont.GetMetrics();
double fractionAboveBaseline = (double)fontMetrics.Ascent /
(fontMetrics.Ascent + fontMetrics.Descent + fontMetrics.LineGap);
shadowTextBlock.RenderTransformOrigin = new Point(0, fractionAboveBaseline);
}
}
void OnListBoxSelectionChanged(object sender, SelectionChangedEventArgs args)
{
string fontFamily = (sender as ListBox).SelectedItem as string;
if (fontFamily == null)
{
return;
}
txtblk.FontFamily = new FontFamily(fontFamily);
int index;
if (writeFontCollection.FindFamilyName(fontFamily, out index))
{
WriteFontFamily writeFontFamily = writeFontCollection.GetFontFamily(index);
WriteFont writeFont = writeFontFamily.GetFirstMatchingFont(FontWeights.Normal,
FontStretch.Normal,
FontStyle.Normal);
curMetrics = writeFont.GetMetrics();
updateMetricLines();
}
}