public void Update()
{
if (View?.LayoutParameters == null && _hasLayoutOccurred)
{
return;
}
if (View != null && !_elementAlreadyChanged)
{
_defaultTransformationMethod = View.TransformationMethod;
_elementAlreadyChanged = true;
}
if (!UpdateTextAndImage())
{
UpdateImage();
}
UpdatePadding();
}
// Test if the suggested size fits the control boundaries
public int OnTestSize(int suggestedSize, RectF availableSpace)
{
RectF textRect = new RectF();
paint.TextSize = suggestedSize;
ITransformationMethod transformationMethod = targetControl.TransformationMethod;
string text = null;
if (transformationMethod != null)
{
text = transformationMethod.GetTransformation(targetControl.Text, targetControl);
}
// If text is null, use the value from Text object
if (text == null)
{
text = targetControl.Text;
}
bool singleLine = targetControl.MaxLines == 1;
if (singleLine)
{
textRect.Bottom = paint.FontSpacing;
textRect.Right = paint.MeasureText(text);
}
else
{
StaticLayout layout = new StaticLayout(text, paint, widthLimit, Alignment.AlignNormal, spacingMult, spacingAdd, true);
if (targetControl.MaxLines != NO_LINE_LIMIT && layout.LineCount > targetControl.MaxLines)
{
return(1);
}
textRect.Bottom = layout.Height;
int maxWidth = -1;
int lineCount = layout.LineCount;
for (int i = 0; i < lineCount; i++)
{
int end = layout.GetLineEnd(i);
if (i < lineCount - 1 && end > 0 && !IsValidWordWrap(text[end - 1], text[end]))
{
return(1);
}
if (maxWidth < layout.GetLineRight(i) - layout.GetLineLeft(i))
{
maxWidth = (int)layout.GetLineRight(i) - (int)layout.GetLineLeft(i);
}
}
textRect.Right = maxWidth;
}
textRect.OffsetTo(0, 0);
if (availableSpace.Contains(textRect))
{
return(-1);
}
return(1);
}
