internal GdiFontMetrics(GdiDeviceContent dc, GdiFont currentFont)
{
if (dc.Handle == IntPtr.Zero)
{
throw new ArgumentNullException("dc", "Handle to device context cannot be null");
}
if (dc.GetCurrentObject(GdiDcObject.Font) == IntPtr.Zero)
{
throw new ArgumentException("dc", "No font selected into supplied device context");
}
this.dc = dc;
this.currentFont = currentFont;
// FontFileReader requires the font facename because the font may exist in
// a TrueType collection.
StringBuilder builder = new StringBuilder(255);
LibWrapper.GetTextFace(dc.Handle, builder.Capacity, builder);
faceName = builder.ToString();
ranges = new GdiUnicodeRanges(dc);
reader = new FontFileReader(new MemoryStream(GetFontData()), faceName);
converter = new PdfUnitConverter(EmSquare);
// After we have cached the font data, we can safely delete the resource
currentFont.Dispose();
}
/// <summary>
/// Creates a <see cref="GdiFontMetrics"/> object from <b>baseFontName</b>
/// </summary>
private void ObtainFontMetrics() {
dc = new GdiDeviceContent();
GdiFont font = GdiFont.CreateDesignFont(
properties.FaceName, properties.IsBold, properties.IsItalic, dc);
unicodeRanges = new GdiUnicodeRanges(dc);
metrics = font.GetMetrics(dc);
}
internal GdiFontMetrics(GdiDeviceContent dc, GdiFont currentFont) {
if (dc.Handle == IntPtr.Zero) {
throw new ArgumentNullException("dc", "Handle to device context cannot be null");
}
if (dc.GetCurrentObject(GdiDcObject.Font) == IntPtr.Zero) {
throw new ArgumentException("dc", "No font selected into supplied device context");
}
this.dc = dc;
this.currentFont = currentFont;
// FontFileReader requires the font facename because the font may exist in
// a TrueType collection.
StringBuilder builder = new StringBuilder(255);
LibWrapper.GetTextFace(dc.Handle, builder.Capacity, builder);
faceName = builder.ToString();
ranges = new GdiUnicodeRanges(dc);
reader = new FontFileReader(new MemoryStream(GetFontData()), faceName);
converter = new PdfUnitConverter(EmSquare);
// After we have cached the font data, we can safely delete the resource
currentFont.Dispose();
}
