/*
* public override void OnChildrenLoaded(){
*
* // Construct the selector structure now:
* // Style.Computed.RefreshStructure();
*
* }
*/
/// <summary>Part of shrink-to-fit. Computes the maximum and minimum possible width for an element.
/// This does not include the elements own padding/margin/border.</summary>
public virtual void GetWidthBounds(out float min, out float max)
{
min = 0f;
max = 0f;
// For each child, get its width bounds too.
if (RenderData.FirstBox == null)
{
return;
}
if (childNodes_ != null)
{
// Current line:
float cMin = 0f;
float cMax = 0f;
for (int i = 0; i < childNodes_.length; i++)
{
Node child = childNodes_[i];
IRenderableNode renderable = (child as IRenderableNode);
if (renderable == null)
{
continue;
}
float bMin;
float bMax;
if (child is RenderableTextNode)
{
// Always get bounds:
renderable.GetWidthBounds(out bMin, out bMax);
}
else
{
// Get the first box from the render data:
ComputedStyle cs = renderable.ComputedStyle;
RenderableData rd = renderable.RenderData;
LayoutBox box = rd.FirstBox;
if (box == null)
{
continue;
}
int displayMode = box.DisplayMode;
// If it's inline (or float) then it's additive to the current line.
if ((displayMode & DisplayMode.OutsideBlock) != 0 && box.FloatMode == FloatMode.None)
{
// Line break!
cMin = 0f;
cMax = 0f;
}
// Get an explicit width:
bool wasAuto;
bMin = rd.GetWidth(true, out wasAuto);
if (bMin == float.MinValue)
{
// Get the bounds:
renderable.GetWidthBounds(out bMin, out bMax);
}
else
{
bMax = bMin;
}
// Add margins etc (NB: These are calculated twice due to %):
BoxStyle padding = cs.GetPaddingBox(displayMode);
BoxStyle border = cs.GetBorderBox(displayMode);
// Compute the initial margin:
bool marginAuto = false;
BoxStyle margin = cs.GetMarginBox(displayMode, box.FloatMode, ref marginAuto);
float extraStyle = (
border.Left + border.Right +
padding.Left + padding.Right +
margin.Left + margin.Right
);
bMin += extraStyle;
bMax += extraStyle;
}
// Apply to line:
cMin += bMin;
cMax += bMax;
// Longest line?
if (cMin > min)
{
min = cMin;
}
if (cMax > max)
{
max = cMax;
}
}
}
}
