public static Rectangle GetUsedRectangle(this IIconControl ctrl, Graphics g, Rectangle rect)
{
var iconMargin = ctrl.IconMargin;
var iconSize = ctrl.IconSize;
RectangleF controlRange = new RectangleF(rect.X, rect.Y, rect.Width, rect.Height);
int PointX = 0;
int PointY = 0;
switch (ctrl.IconAlign)
{
case ContentAlignment.BottomCenter:
PointX = (int)Math.Ceiling((controlRange.Width - iconSize.Width) / 2);
PointY = (int)Math.Ceiling(controlRange.Height - iconMargin.Bottom - iconSize.Height);
break;
case ContentAlignment.BottomLeft:
PointX = iconMargin.Left;
PointY = (int)Math.Ceiling(controlRange.Height - iconMargin.Bottom - iconSize.Height);
break;
case ContentAlignment.BottomRight:
PointX = (int)Math.Ceiling(controlRange.Width - iconSize.Width - iconMargin.Right);
PointY = (int)Math.Ceiling(controlRange.Height - iconMargin.Bottom - iconSize.Height);
break;
case ContentAlignment.MiddleCenter:
PointX = (int)Math.Ceiling((controlRange.Width - iconSize.Width) / 2);
PointY = (int)Math.Ceiling((controlRange.Height - iconSize.Height) / 2);
break;
default:
case ContentAlignment.MiddleLeft:
PointX = iconMargin.Left;
PointY = (int)Math.Ceiling((controlRange.Height - iconSize.Height) / 2);
break;
case ContentAlignment.MiddleRight:
PointX = (int)Math.Ceiling(controlRange.Width - iconSize.Width - iconMargin.Right);
PointY = (int)Math.Ceiling((controlRange.Height - iconSize.Height) / 2);
break;
case ContentAlignment.TopCenter:
PointX = (int)Math.Ceiling((controlRange.Width - iconSize.Width) / 2);
PointY = iconMargin.Top;
break;
case ContentAlignment.TopLeft:
PointX = iconMargin.Left;
PointY = iconMargin.Top;
break;
case ContentAlignment.TopRight:
PointX = (int)Math.Ceiling(controlRange.Width - iconSize.Width - iconMargin.Right);
PointY = iconMargin.Top;
break;
}
return(new Rectangle(PointX, PointY, iconSize.Width, iconSize.Height));
}
public static Rectangle GetRestRectangle(this IIconControl ctrl, Graphics g, Rectangle rect)
{
int tempX = (int)rect.X,
tempY = (int)rect.Y,
tempWidth = (int)rect.Width,
tempHeight = (int)rect.Height;
var usedSize = GetUsedSize(ctrl);
switch (ctrl.DisplayStyle)
{
default:
case ToolStripItemDisplayStyle.None:
case ToolStripItemDisplayStyle.Image:
//无需绘制其他元素
tempX = tempY = tempWidth = tempHeight = 0;
break;
case ToolStripItemDisplayStyle.Text:
case ToolStripItemDisplayStyle.ImageAndText:
switch (ctrl.IconAlign)
{
default:
case ContentAlignment.MiddleCenter:
case ContentAlignment.TopLeft:
case ContentAlignment.TopRight:
case ContentAlignment.BottomRight:
case ContentAlignment.BottomLeft:
break;
case ContentAlignment.TopCenter:
tempY = usedSize.Height;
tempHeight -= tempY;
break;
case ContentAlignment.BottomCenter:
tempHeight -= usedSize.Height;
break;
case ContentAlignment.MiddleRight:
tempWidth -= usedSize.Width;
break;
case ContentAlignment.MiddleLeft:
tempX = usedSize.Width;
tempWidth -= tempX;
break;
}
break;
}
return(new Rectangle(tempX, tempY, tempWidth, tempHeight));
}
public static void DrawIcon(this IIconControl ctrl, Graphics g, Rectangle rect)
{
if (ctrl.Icon == null)
{
return;
}
if (ctrl.DisplayStyle == ToolStripItemDisplayStyle.None || ctrl.DisplayStyle == ToolStripItemDisplayStyle.Text)
{
return;
}
var iconRect = GetUsedRectangle(ctrl, g, rect);
g.DrawImage(ctrl.Icon, iconRect);
}
public static Size GetUsedSize(this IIconControl ctrl)
{
return(new Size(ctrl.IconSize.Width + ctrl.IconMargin.Left + ctrl.IconMargin.Right, ctrl.IconSize.Height + ctrl.IconMargin.Top + ctrl.IconMargin.Bottom));
}
