private void DoFindLargestFont(ITextOverlay overlay, NSRect rect)
{
float[] candidates = new float[]{12.0f, 14.0f, 18.0f, 24.0f, 36.0f, 48.0f, 64.0f, 72.0f, 06.0f, 144.0f, 288.0f, 0.0f};
int i = 0;
while (candidates[i + 1] != 0.0f)
{
var attrs = NSMutableDictionary.Create();
NSFont font = NSFont.fontWithName_size(NSString.Create("Verdana"), candidates[i + 1]);
attrs.setObject_forKey(font, Externs.NSFontAttributeName);
attrs.setObject_forKey(overlay.Color, Externs.NSForegroundColorAttributeName);
NSMutableParagraphStyle style = NSMutableParagraphStyle.Create();
style.setAlignment(Enums.NSCenterTextAlignment);
attrs.setObject_forKey(style, Externs.NSParagraphStyleAttributeName);
var candidate = NSAttributedString.Create(overlay.Text, attrs);
NSSize size = candidate.size();
if (size.width <= rect.size.width && size.height <= rect.size.height)
{
m_overlay = candidate.Retain();
m_overlaySize = size;
++i;
}
else
{
break;
}
}
}
private void DoCacheOverlay(ITextOverlay overlay, NSRect rect)
{
if (overlay.Text != m_overlayText || rect.size != m_overlayRect.size)
{
if (m_overlay != null)
{
m_overlay.release();
m_overlay = null;
}
DoFindLargestFont(overlay, rect);
m_overlayText = overlay.Text;
m_overlayRect = rect;
}
}
