protected override void OnMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
int sizeWidth = MeasureSpec.GetSize(widthMeasureSpec) - this.PaddingRight - this.PaddingLeft;
int sizeHeight = MeasureSpec.GetSize(heightMeasureSpec) - this.PaddingTop - this.PaddingBottom;
MeasureSpecMode modeWidth = MeasureSpec.GetMode(widthMeasureSpec);
MeasureSpecMode modeHeight = MeasureSpec.GetMode(heightMeasureSpec);
int controlMaxLength = this.config.Orientation == HORIZONTAL ? sizeWidth : sizeHeight;
int controlMaxThickness = this.config.Orientation == HORIZONTAL ? sizeHeight : sizeWidth;
MeasureSpecMode modeLength = this.config.Orientation == HORIZONTAL ? modeWidth : modeHeight;
MeasureSpecMode modeThickness = this.config.Orientation == HORIZONTAL ? modeHeight : modeWidth;
lines.Clear();
LineDefinition currentLine = new LineDefinition(controlMaxLength, config);
lines.Add(currentLine);
int count = this.ChildCount;
for (int i = 0; i < count; i++)
{
View child = this.GetChildAt(i);
if (child.Visibility == ViewStates.Gone)
{
continue;
}
CustomLayoutParams lp = (CustomLayoutParams)child.LayoutParameters;
child.Measure(GetChildMeasureSpec(widthMeasureSpec, this.PaddingLeft + this.PaddingRight, lp.Width), GetChildMeasureSpec(heightMeasureSpec, this.PaddingTop + this.PaddingBottom, lp.Height));
lp.ClearCalculatedFields(this.config.Orientation);
if (this.config.Orientation == FlowLayout.HORIZONTAL)
{
lp.Length = child.MeasuredWidth;
lp.Thickness = child.MeasuredHeight;
}
else
{
lp.Length = child.MeasuredHeight;
lp.Thickness = child.MeasuredWidth;
}
bool newLine = lp.newLine || (modeLength != MeasureSpecMode.Unspecified && !currentLine.CanFit(child));
if (newLine)
{
currentLine = new LineDefinition(controlMaxLength, config);
if (this.config.Orientation == VERTICAL && this.config.Direction == LAYOUT_DIRECTION_RTL)
{
lines.Insert(0, currentLine);
}
else
{
lines.Add(currentLine);
}
}
if (this.config.Orientation == HORIZONTAL && this.config.Direction == LAYOUT_DIRECTION_RTL)
{
currentLine.AddView(0, child);
}
else
{
currentLine.AddView(child);
}
}
this.CalculateLinesAndChildPosition(lines);
int contentLength = 0;
foreach (LineDefinition l in lines)
{
contentLength = Math.Max(contentLength, l.LineLength);
}
int contentThickness = currentLine.LineStartThickness + currentLine.LineThickness;
int realControlLength = this.FindSize(modeLength, controlMaxLength, contentLength);
int realControlThickness = this.FindSize(modeHeight, controlMaxThickness, contentThickness);
this.ApplyGravityToLines(lines, realControlLength, realControlThickness);
foreach (LineDefinition line in lines)
{
this.ApplyGravityToLine(line);
this.ApplyPositionsToViews(line);
}
/* need to take padding into account */
int totalControlWidth = this.PaddingLeft + this.PaddingRight;
int totalControlHeight = this.PaddingBottom + this.PaddingTop;
if (this.config.Orientation == HORIZONTAL)
{
totalControlWidth += contentLength;
totalControlHeight += contentThickness;
}
else
{
totalControlWidth += contentThickness;
totalControlHeight += contentLength;
}
this.SetMeasuredDimension(ResolveSize(totalControlWidth, widthMeasureSpec), ResolveSize(totalControlHeight, heightMeasureSpec));
}
