protected override void DrawTextInternal(string value, Font font, Rectangle rectangle, Color color, HorizontalAlignment horizontalAlignment, VerticalAlignment verticalAlignment)
{
System.Windows.Forms.TextFormatFlags flags = System.Windows.Forms.TextFormatFlags.Left;
switch (horizontalAlignment)
{
case HorizontalAlignment.Center:
{
flags |= System.Windows.Forms.TextFormatFlags.HorizontalCenter;
break;
}
case HorizontalAlignment.Right:
{
flags |= System.Windows.Forms.TextFormatFlags.Right;
break;
}
}
switch (verticalAlignment)
{
case VerticalAlignment.Bottom:
{
flags |= System.Windows.Forms.TextFormatFlags.Bottom;
break;
}
case VerticalAlignment.Middle:
{
flags |= System.Windows.Forms.TextFormatFlags.VerticalCenter;
break;
}
}
System.Windows.Forms.TextRenderer.DrawText(mvarGraphics, value, FontToNativeFont(font), RectangleToNativeRectangle(rectangle), ColorToNativeColor(color), flags);
}
public static Font FromFamily(string familyName, double size, double weight = 400)
{
Font font = new Font();
font.FamilyName = familyName;
font.Size = size;
font.Weight = weight;
return font;
}
private IntPtr GetHandleByFont(IntPtr hdc, Font font)
{
Internal.Windows.Structures.GDI.LOGFONT lplf = new Internal.Windows.Structures.GDI.LOGFONT();
lplf.lfFaceName = font.FamilyName;
lplf.lfCharSet = Internal.Windows.Constants.GDI.LogFontCharSet.Default;
lplf.lfItalic = (byte)(font.Italic ? 1 : 0);
lplf.lfQuality = Internal.Windows.Constants.GDI.LogFontQuality.ClearType;
int lpy = Internal.Windows.Methods.GDI.GetDeviceCaps(hdc, Internal.Windows.Constants.GDI.DeviceCapsIndex.LogPixelsY);
// 72 points/inch, lpy pixels/inch
// thanks https://support.microsoft.com/en-us/kb/74299
lplf.lfHeight = (int)(Math.Round(-(font.Size * lpy) / (double)72));
lplf.lfWeight = (int)font.Weight;
IntPtr retval = Internal.Windows.Methods.GDI.CreateFontIndirect(ref lplf);
return retval;
}
protected abstract void DrawTextInternal(string value, Font font, Rectangle rectangle, Color color, HorizontalAlignment horizontalAlignment, VerticalAlignment verticalAlignment);
public void DrawText(string value, Font font, Rectangle rectangle, Color color, HorizontalAlignment horizontalAlignment = HorizontalAlignment.Left, VerticalAlignment verticalAlignment = VerticalAlignment.Top)
{
DrawTextInternal(value, font, rectangle, color, horizontalAlignment, verticalAlignment);
}
private System.Drawing.FontStyle GetNativeFontStyle(Font font)
{
System.Drawing.FontStyle style = System.Drawing.FontStyle.Regular;
if (font.Italic) style |= System.Drawing.FontStyle.Italic;
if (font.Weight >= FontWeights.Bold) style |= System.Drawing.FontStyle.Bold;
return style;
}
private System.Drawing.Font FontToNativeFont(Font font)
{
// TODO: get rid of this hardcoding and actually create real Font objects from system fonts
if (font == SystemFonts.MenuFont)
{
return System.Drawing.SystemFonts.MenuFont;
}
else if (font == null)
{
return System.Drawing.SystemFonts.DefaultFont;
}
return new System.Drawing.Font(font.FamilyName, (float)font.Size, GetNativeFontStyle(font));
}
