private SizeF GetStringSize(Graphics graphics, LayoutSpec line, float fontEmSize)
{
using (var font = new Font(line.FontFamily, fontEmSize, line.FontStyle))
{
return(graphics.MeasureString(line.Text, font));
}
}
/// <summary>
/// Draws the background of the title card to this object's graphics context.
/// </summary>
public void DrawBackground()
{
Graphics.Clear(BackgroundPrimaryColor);
string fontFamilyName = FirstAvailableFont(BackgroundFont);
var family = new FontFamily(fontFamilyName);
var style = FontStyle.Regular;
var brush = new SolidBrush(BackgroundSecondaryColor);
var spec = new LayoutSpec()
{
Text = DecorativeInitial,
FontFamily = family,
FontStyle = style,
Color = brush.Color
};
var boundingBox = new SizeF(Width, Height);
float fontSize = 0;
SizeF stringSize = new SizeF();
GetMaxFontSize(Graphics, spec, boundingBox, out fontSize, out stringSize);
using (var font = new Font(family, fontSize, style))
{
var x = -0.6F * stringSize.Width;
var y = 0.3F * stringSize.Height;
Graphics.DrawString(DecorativeInitial, font, brush, x, y);
}
}
private void GetMaxFontSize(Graphics graphics, LayoutSpec line, SizeF boundingBox, out float fontSize, out SizeF stringSize)
{
float testedFontSize = 5;
SizeF testedStringSize = GetStringSize(graphics, line, testedFontSize);
do
{
fontSize = testedFontSize;
stringSize = testedStringSize;
testedFontSize += 1;
testedStringSize = GetStringSize(graphics, line, testedFontSize);
}while (testedStringSize.Width < boundingBox.Width && testedStringSize.Height < boundingBox.Height);
}