protected override void Layout()
{
if (Corners != null)
{
Corners.PreLayout();
}
ComputedStyle computed = Element.Style.Computed;
// Find the zIndex:
// NB: At same depth as BGColour - right at the back.
float zIndex = (computed.ZIndex - 0.006f);
// Get the co-ord of the top edge:
int top = computed.OffsetTop;
int left = computed.OffsetLeft;
// And the dimensions of the lines:
// Note: boxwidth doesn't include the left/right widths to prevent overlapping.
int boxWidth = computed.PaddedWidth;
int boxHeight = computed.PaddedHeight + WidthTop + WidthBottom;
BoxRegion screenRegion = new BoxRegion();
Renderman renderer = Element.Document.Renderer;
// Get the default colour - that's the same as the text colour:
Color colour = Color.black;
// Is the border multicoloured?
bool multiColour = false;
// Does this border have a colour?
if (Colour == null)
{
// Grab the text colour if there is one:
if (computed.Text != null)
{
// It's the same as the font colour:
colour = computed.Text.FontColour;
}
else
{
// Nope - We need to set alpha:
colour.a = computed.ColorOverlay.a;
}
}
else if (Colour.Length == 1)
{
colour = Colour[0];
}
else
{
multiColour = true;
}
for (int i = 0; i < 4; i++)
{
int lineHeight = 0;
int lineWidth = 0;
// Co-ords of the top-left corner for our box:
int cornerY = top;
int cornerX = left;
if (i == 0 || i == 2)
{
// Top or bottom:
lineWidth = boxWidth;
lineHeight = BorderWidth(i);
}
else
{
lineWidth = BorderWidth(i);
lineHeight = boxHeight;
}
// Does this border have multiple colours?
if (multiColour)
{
colour = Colour[i];
}
if (Corners != null)
{
Corners.Layout(i, ref cornerX, ref cornerY, ref lineWidth, ref lineHeight);
}
else
{
switch (i)
{
case 0:
// Top:
cornerX += WidthLeft;
break;
case 1:
// Right:
cornerX += boxWidth + WidthLeft;
break;
case 2:
// Bottom:
cornerY += boxHeight - WidthBottom;
cornerX += WidthLeft;
break;
}
}
screenRegion.Set(cornerX, cornerY, lineWidth, lineHeight);
if (screenRegion.Overlaps(renderer.ClippingBoundary))
{
// This region is visible. Clip it:
screenRegion.ClipBy(renderer.ClippingBoundary);
// Ensure we have a batch (doesn't change graphics or font textures, thus both null):
SetupBatch(null, null);
// And get our block ready:
MeshBlock block = Add();
// Set the UV to that of the solid block colour pixel:
block.SetSolidColourUV();
// Set the border colour:
block.SetColour(colour);
block.SetClipped(renderer.ClippingBoundary, screenRegion, renderer, zIndex);
}
}
}