/// <summary>
/// Draw specific border (top/bottom/left/right) with the box data (style/width/rounded).<br/>
/// </summary>
/// <param name="border">desired border to draw</param>
/// <param name="box">the box to draw its borders, contain the borders data</param>
/// <param name="g">the device to draw into</param>
/// <param name="rect">the rectangle the border is enclosing</param>
/// <param name="isLineStart">Specifies if the border is for a starting line (no bevel on left)</param>
/// <param name="isLineEnd">Specifies if the border is for an ending line (no bevel on right)</param>
private static void DrawBorder(Border border, CssBox box, RGraphics g, RRect rect, bool isLineStart, bool isLineEnd)
{
var style = GetStyle(border, box);
var color = GetColor(border, box, style);
var borderPath = GetRoundedBorderPath(g, border, box, rect);
if (borderPath != null)
{
// rounded border need special path
Object prevMode = null;
if (box.HtmlContainer != null && !box.HtmlContainer.AvoidGeometryAntialias && box.IsRounded)
prevMode = g.SetAntiAliasSmoothingMode();
var pen = GetPen(g, style, color, GetWidth(border, box));
using (borderPath)
g.DrawPath(pen, borderPath);
g.ReturnPreviousSmoothingMode(prevMode);
}
else
{
// non rounded border
if (style == CssConstants.Inset || style == CssConstants.Outset)
{
// inset/outset border needs special rectangle
SetInOutsetRectanglePoints(border, box, rect, isLineStart, isLineEnd);
g.DrawPolygon(g.GetSolidBrush(color), _borderPts);
}
else
{
// solid/dotted/dashed border draw as simple line
var pen = GetPen(g, style, color, GetWidth(border, box));
switch (border)
{
case Border.Top:
g.DrawLine(pen, Math.Ceiling(rect.Left), rect.Top + box.ActualBorderTopWidth / 2, rect.Right - 1, rect.Top + box.ActualBorderTopWidth / 2);
break;
case Border.Left:
g.DrawLine(pen, rect.Left + box.ActualBorderLeftWidth / 2, Math.Ceiling(rect.Top), rect.Left + box.ActualBorderLeftWidth / 2, Math.Floor(rect.Bottom));
break;
case Border.Bottom:
g.DrawLine(pen, Math.Ceiling(rect.Left), rect.Bottom - box.ActualBorderBottomWidth / 2, rect.Right - 1, rect.Bottom - box.ActualBorderBottomWidth / 2);
break;
case Border.Right:
g.DrawLine(pen, rect.Right - box.ActualBorderRightWidth / 2, Math.Ceiling(rect.Top), rect.Right - box.ActualBorderRightWidth / 2, Math.Floor(rect.Bottom));
break;
}
}
}
}
/// <summary>
/// Paints the text decoration (underline/strike-through/over-line)
/// </summary>
/// <param name="g">the device to draw into</param>
/// <param name="rectangle"> </param>
/// <param name="isFirst"> </param>
/// <param name="isLast"> </param>
protected void PaintDecoration(RGraphics g, RRect rectangle, bool isFirst, bool isLast)
{
if (string.IsNullOrEmpty(TextDecoration) || TextDecoration == CssConstants.None)
return;
double y = 0f;
if (TextDecoration == CssConstants.Underline)
{
y = Math.Round(rectangle.Top + ActualFont.UnderlineOffset);
}
else if (TextDecoration == CssConstants.LineThrough)
{
y = rectangle.Top + rectangle.Height / 2f;
}
else if (TextDecoration == CssConstants.Overline)
{
y = rectangle.Top;
}
y -= ActualPaddingBottom - ActualBorderBottomWidth;
double x1 = rectangle.X;
if (isFirst)
x1 += ActualPaddingLeft + ActualBorderLeftWidth;
double x2 = rectangle.Right;
if (isLast)
x2 -= ActualPaddingRight + ActualBorderRightWidth;
var pen = g.GetPen(ActualColor);
pen.Width = 1;
pen.DashStyle = RDashStyle.Solid;
g.DrawLine(pen, x1, y, x2, y);
}
