/// <summary>
/// Initialize a new instance of the class <see cref="Smoothing"/> by setting the smoothing quality of the lines.
/// </summary>
/// <param name="graphics">Surface <see cref="Graphics"/> oriented on which to draw</param>
/// <param name="quality">One of the values in the enumeration <see cref="SmoothingModeEx"/> that represents the smoothing quality of the lines.</param>
public Smoothing(Graphics graphics, SmoothingModeEx quality)
{
Graphics safeGraphics = SentinelHelper.PassThroughNonNull(graphics);
_graphics = safeGraphics;
_smoothingModePrev = _graphics.SmoothingMode;
_graphics.SmoothingMode = quality.ToSmoothingMode();
}
/// <summary>
/// Equivalence between the types <see cref="SmoothingModeEx" /> and <see cref="SmoothingMode"/>.
/// </summary>
/// <param name="mode">One of the values in the enumeration <see cref="SmoothingModeEx"/> that represents the smoothing quality of the lines.</param>
/// <returns>
/// Equivalent representation quality.
/// </returns>
public static SmoothingMode ToSmoothingMode(this SmoothingModeEx mode)
{
SmoothingMode smmode = SmoothingMode.AntiAlias;
if (mode == SmoothingModeEx.HighSpeed)
{
smmode = SmoothingMode.Default;
}
return(smmode);
}
/// <summary>
/// Initialize a new instance of the class <see cref="Smoothing"/> by setting the smoothing quality of the lines.
/// </summary>
/// <param name="canvas">Surface <see cref="Graphics"/> oriented on which to draw.</param>
/// <param name="quality">One of the values in the enumeration <see cref="SmoothingModeEx"/> that represents the smoothing quality of the lines.</param>
public Smoothing(Canvas canvas, SmoothingModeEx quality) : this(SentinelHelper.PassThroughNonNull(canvas).Graphics, quality)
{
}
/// <summary>
/// Returns a <see cref="Brush"/> to draw from a reference image specifying the orientation, quality, style and effect.
/// </summary>
/// <param name="image">An <see cref="Image"/> base object to create the drawing brush.</param>
/// <param name="rect">A <see cref="RectangleF"/> structure that represents the rectangle in which to paint.</param>
/// <param name="style">One of the values in the enumeration <see cref="ImageStyle"/> that represents image style.</param>
/// <param name="effect">One of the values in the enumeration <see cref="EffectType"/> that represents the type of effect to be applied.</param>
/// <param name="orientation">One of the values in the enumeration <see cref="Orientation"/> that represents the orientation of the brush.</param>
/// <param name="quality">One of the values in the enumeration <see cref="SmoothingModeEx"/> that represents the quality of presentation</param>
/// <returns>
/// Returns a <see cref="Brush"/> object reference that represents the drawing brush.
/// </returns>
public static Brush ToBrush(this Image image, RectangleF rect, ImageStyle style, EffectType effect, Orientation orientation, SmoothingModeEx quality)
{
if (image == null)
{
return(new SolidBrush(Color.Empty));
}
Brush brush;
TextureBrush tempTextureBrush = null;
Image texture = image.Rotate(orientation).ApplyEffect(effect);
using (var bitmap = new Bitmap(texture.Width, texture.Height))
using (var graphics = Graphics.FromImage(bitmap))
using (new Smoothing(graphics, quality))
{
Rectangle dstRect = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
Rectangle srcRect = new Rectangle(Point.Empty, texture.Size);
graphics.DrawImage(texture, dstRect, srcRect, GraphicsUnit.Pixel);
try
{
tempTextureBrush = new TextureBrush(bitmap)
{
WrapMode = style.ToWrapMode()
};
switch (style)
{
case ImageStyle.TopLeft:
tempTextureBrush.TranslateTransform(rect.Left, rect.Top);
break;
case ImageStyle.TopMiddle:
tempTextureBrush.TranslateTransform(rect.Left + (rect.Width - texture.Width) / 2, rect.Top);
break;
case ImageStyle.TopRight:
tempTextureBrush.TranslateTransform(rect.Right - texture.Width, rect.Top);
break;
case ImageStyle.CenterLeft:
tempTextureBrush.TranslateTransform(rect.Left, rect.Top + (rect.Height - texture.Height) / 2);
break;
case ImageStyle.CenterMiddle:
tempTextureBrush.TranslateTransform(rect.Left + (rect.Width - texture.Width) / 2, rect.Top + (rect.Height - texture.Height) / 2);
break;
case ImageStyle.CenterRight:
tempTextureBrush.TranslateTransform(rect.Right - texture.Width, rect.Top + (rect.Height - texture.Height) / 2);
break;
case ImageStyle.BottomLeft:
tempTextureBrush.TranslateTransform(rect.Left, rect.Bottom - texture.Height);
break;
case ImageStyle.BottomMiddle:
tempTextureBrush.TranslateTransform(rect.Left + (rect.Width - texture.Width) / 2, rect.Bottom - texture.Height);
break;
case ImageStyle.BottomRight:
tempTextureBrush.TranslateTransform(rect.Right - texture.Width, rect.Bottom - texture.Height);
break;
case ImageStyle.Stretch:
tempTextureBrush.TranslateTransform(rect.Left, rect.Top);
tempTextureBrush.ScaleTransform(rect.Width / texture.Width, rect.Height / texture.Height);
break;
case ImageStyle.Tile:
case ImageStyle.TileFlipX:
case ImageStyle.TileFlipY:
case ImageStyle.TileFlipXY:
tempTextureBrush.TranslateTransform(rect.Left, rect.Top);
break;
}
brush = (Brush)tempTextureBrush.Clone();
}
finally
{
tempTextureBrush?.Dispose();
}
}
return(brush);
}
