public static TextMetrics GlobalMeasureText(string text, Font font)
{
if (string.IsNullOrEmpty(text))
{
return(new TextMetrics());
}
if (font == null)
{
throw new ArgumentNullException("font");
}
using (var atext = new NSMutableAttributedString(text)) {
atext.AddAttributes(new CTStringAttributes {
ForegroundColorFromContext = true,
Font = font.GetCTFont(),
}.Dictionary, new NSRange(0, text.Length));
using (var l = new CTLine(atext)) {
nfloat asc, desc, lead;
var len = l.GetTypographicBounds(out asc, out desc, out lead);
return(new TextMetrics {
Width = len,
Ascent = asc,
Descent = desc,
});
}
}
}
public void DrawText(string text, Rect frame, Font font, TextAlignment alignment = TextAlignment.Left, Pen pen = null, Brush brush = null)
{
if (string.IsNullOrEmpty(text))
{
return;
}
if (font == null)
{
throw new ArgumentNullException("font");
}
SetBrush(brush);
var pt = frame.TopLeft;
using (var atext = new NSMutableAttributedString(text)) {
atext.AddAttributes(new CTStringAttributes {
ForegroundColorFromContext = true,
Font = font.GetCTFont(),
}, new NSRange(0, text.Length));
using (var l = new CTLine(atext)) {
context.SaveState();
context.TranslateCTM((nfloat)(pt.X), (nfloat)(pt.Y));
context.TextPosition = CGPoint.Empty;
l.Draw(context);
context.RestoreState();
}
}
}
public void DrawText(string text, Rect frame, Font font, TextAlignment alignment = TextAlignment.Left, Pen pen = null, Brush brush = null)
{
if (string.IsNullOrEmpty(text))
{
return;
}
if (font == null)
{
throw new ArgumentNullException("font");
}
SetBrush(brush);
using (var atext = new NSMutableAttributedString(text)) {
atext.AddAttributes(new CTStringAttributes {
ForegroundColorFromContext = true,
Font = font.GetCTFont(),
}, new NSRange(0, text.Length));
using (var l = new CTLine(atext)) {
nfloat asc, desc, lead;
var len = l.GetTypographicBounds(out asc, out desc, out lead);
var pt = frame.TopLeft;
switch (alignment)
{
case TextAlignment.Left:
pt.X = frame.X;
break;
case TextAlignment.Center:
pt.X = frame.X + (frame.Width - len) / 2;
break;
case TextAlignment.Right:
pt.X = frame.Right - len;
break;
}
context.SaveState();
context.TranslateCTM((nfloat)(pt.X), (nfloat)(pt.Y));
context.TextPosition = CGPoint.Empty;
l.Draw(context);
context.RestoreState();
}
}
}
public void DrawText(string text, Rect frame, Font font, TextAlignment alignment = TextAlignment.Left, Pen pen = null, Brush brush = null)
{
if (string.IsNullOrEmpty(text))
{
return;
}
if (font == null)
{
throw new ArgumentNullException("font");
}
SetBrush(brush);
// string fontName = font.Name;
// context.SelectFont (font.Name, (nfloat)font.Size, CGTextEncoding.MacRoman);
//
// context.ShowTextAtPoint ((nfloat)frame.X, (nfloat)frame.Y, text);
var pt = frame.TopLeft;
using (var atext = new NSMutableAttributedString(text)) {
atext.AddAttributes(new CTStringAttributes {
ForegroundColorFromContext = true,
Font = font.GetCTFont(),
}, new NSRange(0, text.Length));
using (var l = new CTLine(atext)) {
nfloat asc, desc, lead;
var width = l.GetTypographicBounds(out asc, out desc, out lead);
context.SaveState();
context.TranslateCTM((nfloat)(pt.X - width / 2), (nfloat)(pt.Y + desc));
context.TextPosition = CGPoint.Empty;
l.Draw(context);
context.RestoreState();
}
}
}
public void DrawText(string text, Rect frame, Font font, TextAlignment alignment = TextAlignment.Left, Pen pen = null, Brush brush = null)
{
if (string.IsNullOrEmpty (text))
return;
if (font == null)
throw new ArgumentNullException ("font");
SetBrush (brush);
// string fontName = font.Name;
// context.SelectFont (font.Name, (nfloat)font.Size, CGTextEncoding.MacRoman);
//
// context.ShowTextAtPoint ((nfloat)frame.X, (nfloat)frame.Y, text);
var pt = frame.TopLeft;
using (var atext = new NSMutableAttributedString (text)) {
atext.AddAttributes (new CTStringAttributes {
ForegroundColorFromContext = true,
Font = font.GetCTFont (),
}, new NSRange (0, text.Length));
using (var l = new CTLine (atext)) {
nfloat asc, desc, lead;
var width = l.GetTypographicBounds (out asc, out desc, out lead);
context.SaveState ();
context.TranslateCTM ((nfloat)(pt.X - width / 2), (nfloat)(pt.Y + desc));
context.TextPosition = CGPoint.Empty;
l.Draw (context);
context.RestoreState ();
}
}
}
public void DrawText(string text, Rect frame, Font font, TextAlignment alignment = TextAlignment.Left, Pen pen = null, Brush brush = null)
{
if (string.IsNullOrEmpty (text))
return;
if (font == null)
throw new ArgumentNullException ("font");
SetBrush (brush);
var pt = frame.TopLeft;
using (var atext = new NSMutableAttributedString (text)) {
atext.AddAttributes (new CTStringAttributes {
ForegroundColorFromContext = true,
Font = font.GetCTFont (),
}, new NSRange (0, text.Length));
using (var l = new CTLine (atext)) {
context.SaveState ();
context.TranslateCTM ((nfloat)(pt.X), (nfloat)(pt.Y));
context.TextPosition = CGPoint.Empty;
l.Draw (context);
context.RestoreState ();
}
}
}
public static TextMetrics GlobalMeasureText (string text, Font font)
{
if (string.IsNullOrEmpty(text))
return new TextMetrics ();
if (font == null)
throw new ArgumentNullException("font");
using (var atext = new NSMutableAttributedString (text)) {
atext.AddAttributes (new CTStringAttributes {
ForegroundColorFromContext = true,
Font = font.GetCTFont (),
}, new NSRange (0, text.Length));
using (var l = new CTLine (atext)) {
nfloat asc, desc, lead;
var len = l.GetTypographicBounds (out asc, out desc, out lead);
return new TextMetrics {
Width = len,
Ascent = asc,
Descent = desc,
};
}
}
}
public void DrawText (string text, Rect frame, Font font, TextAlignment alignment = TextAlignment.Left, Pen pen = null, Brush brush = null)
{
if (string.IsNullOrEmpty (text))
return;
if (font == null)
throw new ArgumentNullException ("font");
SetBrush (brush);
using (var atext = new NSMutableAttributedString (text)) {
atext.AddAttributes (new CTStringAttributes {
ForegroundColorFromContext = true,
StrokeColor = pen != null ? pen.Color.GetCGColor () : null,
Font = font.GetCTFont (),
}, new NSRange (0, text.Length));
using (var l = new CTLine (atext)) {
nfloat asc, desc, lead;
var len = l.GetTypographicBounds (out asc, out desc, out lead);
var pt = frame.TopLeft;
switch (alignment) {
case TextAlignment.Left:
pt.X = frame.X;
break;
case TextAlignment.Center:
pt.X = frame.X + (frame.Width - len) / 2;
break;
case TextAlignment.Right:
pt.X = frame.Right - len;
break;
}
context.SaveState ();
context.TranslateCTM ((nfloat)(pt.X), (nfloat)(pt.Y));
context.TextPosition = CGPoint.Empty;
l.Draw (context);
context.RestoreState ();
}
}
}
