public Pango.Fontset LoadFontset(Pango.FontDescription desc, Pango.Language language)
{
IntPtr raw_ret = pango_context_load_fontset(Handle, desc == null ? IntPtr.Zero : desc.Handle, language == null ? IntPtr.Zero : language.Handle);
Pango.Fontset ret = GLib.Object.GetObject(raw_ret) as Pango.Fontset;
return(ret);
}
public static Pango.Language ScriptGetSampleLanguage(Pango.Script script)
{
IntPtr raw_ret = pango_script_get_sample_language((int)script);
Pango.Language ret = raw_ret == IntPtr.Zero ? null : (Pango.Language)GLib.Opaque.GetOpaque(raw_ret, typeof(Pango.Language), false);
return(ret);
}
public Pango.FontMetrics GetMetrics(Pango.FontDescription desc, Pango.Language language)
{
IntPtr raw_ret = pango_context_get_metrics(Handle, desc == null ? IntPtr.Zero : desc.Handle, language == null ? IntPtr.Zero : language.Handle);
Pango.FontMetrics ret = raw_ret == IntPtr.Zero ? null : (Pango.FontMetrics)GLib.Opaque.GetOpaque(raw_ret, typeof(Pango.FontMetrics), false);
return(ret);
}
public Pango.Coverage GetCoverage(Pango.Language language)
{
IntPtr raw_ret = pango_font_get_coverage(Handle, language == null ? IntPtr.Zero : language.Handle);
Pango.Coverage ret = raw_ret == IntPtr.Zero ? null : (Pango.Coverage)GLib.Opaque.GetOpaque(raw_ret, typeof(Pango.Coverage), false);
return(ret);
}
public Pango.EngineShape FindShaper(Pango.Language language, uint ch)
{
IntPtr raw_ret = pango_font_find_shaper(Handle, language == null ? IntPtr.Zero : language.Handle, ch);
Pango.EngineShape ret = raw_ret == IntPtr.Zero ? null : (Pango.EngineShape)GLib.Opaque.GetOpaque(raw_ret, typeof(Pango.EngineShape), false);
return(ret);
}
public static Pango.Language FromString(string language)
{
IntPtr native_language = GLib.Marshaller.StringToPtrGStrdup(language);
IntPtr raw_ret = pango_language_from_string(native_language);
Pango.Language ret = raw_ret == IntPtr.Zero ? null : (Pango.Language)GLib.Opaque.GetOpaque(raw_ret, typeof(Pango.Language), false);
GLib.Marshaller.Free(native_language);
return(ret);
}
public static void GetLogAttrs(string text, int level, Pango.Language language, Pango.LogAttr log_attrs, int attrs_len)
{
IntPtr native_text = GLib.Marshaller.StringToPtrGStrdup(text);
IntPtr native_log_attrs = GLib.Marshaller.StructureToPtrAlloc(log_attrs);
pango_get_log_attrs(native_text, System.Text.Encoding.UTF8.GetByteCount(text), level, language == null ? IntPtr.Zero : language.Handle, native_log_attrs, attrs_len);
GLib.Marshaller.Free(native_text);
Marshal.FreeHGlobal(native_log_attrs);
}
public void GetFont(out Pango.FontDescription desc, out Pango.Language language, out Pango.Attribute[] extra_attrs)
{
desc = new FontDescription();
IntPtr language_handle, list_handle;
pango_attr_iterator_get_font(Handle, desc.Handle, out language_handle, out list_handle);
desc.Family = desc.Family; // change static string to allocated one
language = language_handle == IntPtr.Zero ? null : new Language(language_handle);
if (list_handle == IntPtr.Zero)
{
extra_attrs = new Pango.Attribute [0];
return;
}
GLib.SList list = new GLib.SList(list_handle);
extra_attrs = new Pango.Attribute [list.Count];
int i = 0;
foreach (IntPtr raw_attr in list)
{
extra_attrs [i++] = Pango.Attribute.GetAttribute(raw_attr);
}
}
public AttrLanguage(Pango.Language language) : this(pango_attr_language_new(language.Handle))
{
}
public void DrawText(int x, int y, String text, TextAlign align)
{
Pango.FontDescription fd = Pango.FontDescription.FromString(FontFamily);
fd.Size = Pango.Units.FromPixels(FontSize);
if ((FontStyle & FontStyle.Bold) != 0)
{
fd.Weight = Pango.Weight.Bold;
}
if ((FontStyle & FontStyle.Italic) != 0)
{
fd.Style = Pango.Style.Italic;
}
Pango.Font font = parent.PangoContext.LoadFont(fd);
Pango.Language lang = Pango.Language.FromString("en");
Pango.FontMetrics metrics = font.GetMetrics(lang);
int estWidth = text.Length * metrics.ApproximateCharWidth * 3 / 2;
Pango.Context pango = parent.PangoContext;
Pango.Layout layout = new Pango.Layout(pango)
{
Width = estWidth,
Wrap = Pango.WrapMode.Word, Alignment = Pango.Alignment.Left,
FontDescription = fd
};
int color = this.Color;
ushort cRed = (ushort)((color >> 16) & 0xFF);
ushort cGreen = (ushort)((color >> 8) & 0xFF);
ushort cBlue = (ushort)(color & 0xFF);
layout.Attributes = new Pango.AttrList();
layout.Attributes.Insert(new Pango.AttrForeground(cRed, cGreen, cBlue));
layout.SetText(text);
double x0;
double y0;
double scale = 1.0 / Pango.Scale.PangoScale;
Pango.Rectangle dummy;
Pango.Rectangle extents;
layout.GetExtents(out dummy, out extents);
switch ((TextAlign)((int)align & 7))
{
case TextAlign.Right:
x0 = x - scale * extents.Width;
break;
case TextAlign.Center:
x0 = x - 0.5 * scale * extents.Width;
break;
default:
x0 = x;
break;
}
switch ((TextAlign)((int)align & ~7))
{
case TextAlign.Top:
y0 = y;
break;
case TextAlign.Bottom:
y0 = y - scale * (metrics.Ascent + metrics.Descent);
break;
case TextAlign.VCenter:
y0 = y - 0.5 * scale * metrics.Ascent;
break;
default:
y0 = y - scale * metrics.Ascent;
break;
}
Matrix srcM = Context.Matrix;
Pango.Matrix dstM;
dstM.X0 = 0.0;
dstM.Xx = srcM.Xx;
dstM.Xy = srcM.Xy;
dstM.Y0 = 0.0;
dstM.Yx = srcM.Yx;
dstM.Yy = srcM.Yy;
parent.PangoContext.Matrix = dstM;
srcM.TransformPoint(ref x0, ref y0);
parent.GdkWindow.DrawLayout(parent.Style.TextGC(StateType.Normal),
(int)(0.5 + x0), (int)(0.5 + y0), layout);
dstM.Xx = 1.0;
dstM.Yy = 1.0;
parent.PangoContext.Matrix = dstM;
}
