public SizeF MeasureString(string text, Alignment alignment, int maxWidth = int.MaxValue)
{
//todo: support alignment
var key = new TextMeasureKey(text, InnerFont, maxWidth);
return(_measurements.GetOrAdd(key, k =>
{
using (NSMutableAttributedString str = new NSMutableAttributedString(text))
{
NSRange range = new NSRange(0, k.Text.Length);
str.SetAttributes(new CTStringAttributes
{
Font = k.Font,
}, range);
using (CTFramesetter frameSetter = new CTFramesetter(str))
{
NSRange fitRange;
CGSize size = frameSetter.SuggestFrameSize(range, null, new CGSize(k.MaxWidth, float.MaxValue), out fitRange);
return new SizeF((float)size.Width, (float)size.Height);
}
}
}));
}
//http://egoco.de/post/19077604048/calculating-the-height-of-text-in-android
//http://stackoverflow.com/questions/16082359/how-to-auto-adjust-text-size-on-a-multi-line-textview-according-to-the-view-max
public SizeF MeasureString(string text, int maxWidth = 2147483647)
{
var key = new TextMeasureKey(text, InnerFont, SizeInPoints, maxWidth);
return(_measurements.GetOrAdd(key, k =>
{
TextPaint paint = AndroidBrush.CreateTextPaint();
paint.TextSize = k.SizeInPoints;
paint.SetTypeface(k.Font);
AndroidTextLayout layout = new AndroidTextLayout(paint);
return layout.MeasureString(k.Text, k.MaxWidth);
}));
}
public static System.Drawing.SizeF Measure(this string text, Font font, int maxWidth = int.MaxValue)
{
var key = new TextMeasureKey(text, font, maxWidth);
var size = _measurements.GetOrAdd(key,
k =>
{
lock (DesktopBitmapTextDraw.GraphicsLocker)
{
return(_graphics.Value.MeasureString(k.Text, k.Font, k.MaxWidth, StringFormat.GenericTypographic));
}
});
return(size);
}
public static System.Drawing.SizeF Measure(this string text, Font font, API.Alignment alignment, int maxWidth = int.MaxValue)
{
try
{
var key = new TextMeasureKey(text, font, maxWidth, alignment);
var size = _measurements.GetOrAdd(key,
k =>
{
var format = alignment.GetFormat(maxWidth != int.MaxValue);
lock (DesktopBitmapTextDraw.GraphicsLocker)
{
return(_graphics.Value.MeasureString(k.Text, k.Font, k.MaxWidth, format));
}
});
return(size);
}
catch (ObjectDisposedException)
{
return(SizeF.Empty);
}
}
