private void AddBackgroundAndBorderLayer(CGRect fullRect)
{
var backgroundLayer = new DisposableCALayer {
Frame = fullRect
};
InsertScrollViewSubLayer(backgroundLayer, 0);
var borderLayer = new DisposableCALayer {
BackgroundColor = BorderColor.CGColor
};
switch (_borderType)
{
case DHSegmentedControlBorderType.Top:
borderLayer.Frame = new CGRect(0, 0, fullRect.Size.Width, _borderWidth);
break;
case DHSegmentedControlBorderType.Left:
borderLayer.Frame = new CGRect(0, 0, _borderWidth, fullRect.Size.Height);
break;
case DHSegmentedControlBorderType.Bottom:
borderLayer.Frame = new CGRect(0, fullRect.Size.Height - _borderWidth, fullRect.Size.Width, _borderWidth);
break;
case DHSegmentedControlBorderType.Right:
borderLayer.Frame = new CGRect(fullRect.Size.Width - _borderWidth, 0, _borderWidth, fullRect.Size.Height);
break;
}
AddScrollViewSubLayer(borderLayer);
}
private void Initialize()
{
_previousIndex = -1;
_scrollView = new SegmentedScrollView {
ScrollsToTop = false, ShowsVerticalScrollIndicator = false, ShowsHorizontalScrollIndicator = false
};
AddSubview(_scrollView);
Opaque = false;
SelectionIndicatorColor = UIColor.FromRGBA(52.0f / 255.0f, 181.0f / 255.0f, 229.0f / 255.0f, 1.0f);
_selectedIndex = 0;
SegmentEdgeInset = new UIEdgeInsets(0, 0, 0, 0);
LabelPaddingInset = new UIEdgeInsets(4, 8, 4, 8);
SelectionIndicatorHeight = 5.0f;
_selectionIndicatorEdgeInsets = new UIEdgeInsets(0, 0, 0, 0);
SelectionStyle = DHSegmentedControlSelectionStyle.TextWidthStripe;
SelectionIndicatorLocation = DHSegmentedControlLocation.Up;
_segmentWidthStyle = DHSegmentedControlWidthStyle.Fixed;
UserDraggable = true;
TouchEnabled = true;
VerticalDividerEnabled = false;
VerticalDividerColor = UIColor.Black;
BorderColor = UIColor.Black;
_borderWidth = 1.0f;
ShouldAnimateUserSelection = true;
_selectionIndicatorBoxOpacity = 0.2f;
SelectionIndicatorArrowLayer = new DisposableCALayer();
SelectionIndicatorStripLayer = new DisposableCALayer();
SelectionIndicatorBoxLayer = new DisposableCALayer {
Opacity = _selectionIndicatorBoxOpacity, BorderWidth = 1.0f
};
ContentMode = UIViewContentMode.Redraw;
_controlType = DHSegmentedControlType.Text;
}
public override void Draw(CGRect rect)
{
if (SectionTitles == null || SectionTitles.Count == 0)
{
return;
}
if (BackgroundColor != null)
{
BackgroundColor.SetFill();
}
SelectionIndicatorArrowLayer.BackgroundColor = SelectionIndicatorColor.CGColor;
SelectionIndicatorStripLayer.BackgroundColor = SelectionIndicatorColor.CGColor;
SelectionIndicatorBoxLayer.BackgroundColor = SelectionIndicatorColor.CGColor;
SelectionIndicatorBoxLayer.BorderColor = SelectionIndicatorColor.CGColor;
_scrollView.Layer.Sublayers = new DisposableCALayer[0];
ClearScrollViewSubLayers();
var oldRect = rect;
if (_controlType == DHSegmentedControlType.Text)
{
for (int idx = 0; idx < _sectionTitles.Count; idx++)
{
var size = MeasureTitle(idx);
var stringWidth = size.Width;
var stringHeight = size.Height;
CGRect newRect, rectDiv, rectFull;
var locationUp = SelectionIndicatorLocation == DHSegmentedControlLocation.Up;
var selectionStyleNotBox = SelectionStyle != DHSegmentedControlSelectionStyle.Box;
var y = (float)Math.Round(((this.Frame.Height - (selectionStyleNotBox ? 1 : 0 * SelectionIndicatorHeight)) / 2) - (stringHeight / 2) + (SelectionIndicatorHeight * (locationUp ? 1 : 0)));
if (_segmentWidthStyle == DHSegmentedControlWidthStyle.Fixed && !UserDraggable)
{
stringWidth = _segmentWidth - LabelPaddingInset.Right - LabelPaddingInset.Left;
newRect = new CGRect((_segmentWidth * idx) + (_segmentWidth - stringWidth) / 2, 0, stringWidth, oldRect.Height - LabelPaddingInset.Top - LabelPaddingInset.Bottom);
rectDiv = new CGRect((_segmentWidth * idx) + (VerticalDividerWidth / 2), SelectionIndicatorHeight * 2, VerticalDividerWidth, Frame.Size.Height - (SelectionIndicatorHeight * 4));
rectFull = new CGRect(_segmentWidth * idx, 0, _segmentWidth, oldRect.Height - SelectionIndicatorHeight);
}
else if (_segmentWidthStyle == DHSegmentedControlWidthStyle.Fixed && UserDraggable)
{
newRect = new CGRect((_segmentWidth * idx) + (_segmentWidth - stringWidth) / 2, y, stringWidth, stringHeight);
rectDiv = new CGRect((_segmentWidth * idx) + (VerticalDividerWidth / 2), SelectionIndicatorHeight * 2, VerticalDividerWidth, Frame.Size.Height - (SelectionIndicatorHeight * 4));
rectFull = new CGRect(_segmentWidth * idx, 0, _segmentWidth, oldRect.Size.Height);
}
else
{
var xOffset = GetSelectedSegmentOffset(idx);
var widthForIndex = _segmentWidths[idx];
newRect = new CGRect(xOffset, y, widthForIndex, stringHeight);
rectFull = new CGRect(_segmentWidth * idx, 0, widthForIndex, oldRect.Size.Height);
rectDiv = new CGRect(xOffset - (VerticalDividerWidth / 2),
SelectionIndicatorHeight * 2, VerticalDividerWidth, Frame.Size.Height - (SelectionIndicatorHeight * 4));
}
newRect = new CGRect((float)Math.Ceiling(newRect.X), (float)Math.Ceiling(newRect.Y), (float)Math.Ceiling(newRect.Size.Width), (float)Math.Ceiling(newRect.Size.Height));
var titleLabel = _titleLabels[idx];
titleLabel.AttributedText = AttributedTitle(idx);
titleLabel.Frame = newRect;
AddScrollViewSubLayer(titleLabel.Layer);
if (VerticalDividerEnabled)
{
var verticalDividerLayer = new DisposableCALayer {
Frame = rectDiv, BackgroundColor = VerticalDividerColor.CGColor
};
AddScrollViewSubLayer(verticalDividerLayer);
}
AddBackgroundAndBorderLayer(rectFull);
}
}
if (_selectedIndex != -1)
{
if (SelectionIndicatorStripLayer.SuperLayer == null)
{
SelectionIndicatorStripLayer.Frame = FrameForSelectionIndicator();
AddScrollViewSubLayer(SelectionIndicatorStripLayer);
if (SelectionStyle == DHSegmentedControlSelectionStyle.Box && SelectionIndicatorBoxLayer.SuperLayer == null)
{
SelectionIndicatorBoxLayer.Frame = FrameForFillerSelectionIndicator();
InsertScrollViewSubLayer(SelectionIndicatorBoxLayer, 0);
}
}
}
}