/// <summary>
/// Add submenu icon
/// </summary>
protected override void OnPaintForeground(SKPaintSurfaceEventArgs e, Rectangle availableSpace)
{
Size actualSubMenuIconSize = new Size();
if (ItemsSource != null && ItemsSource.Count > 0 && IsSubMenuIconVisible && string.IsNullOrEmpty(SubMenuIconAssemblyName) == false && string.IsNullOrEmpty(SubMenuIconResourceKey) == false)
{
if (m_subMenuIconSvg == null)
{
m_subMenuIconSvg = SvgImage.GetSvgImage(SubMenuIconAssemblyName, SubMenuIconResourceKey);
}
Rectangle subMenuIconActualLocation = new Rectangle(
availableSpace.Width - _subMenuIconSize.Width - SubMenuIconMargin.Right,
(availableSpace.Height - _subMenuIconSize.Height) / 2,
_subMenuIconSize.Height,
_subMenuIconSize.Width);
float skSubMenuIconX = (float)subMenuIconActualLocation.X * DeviceScale;
float skSubMenuIconY = (float)subMenuIconActualLocation.Y * DeviceScale;
SKMatrix subMenuIconMatrix = new SKMatrix();
SKPoint subMenuIconPosition = new SKPoint();
float scale = SvgImage.CalculateScale(m_subMenuIconSvg.Picture.CullRect.Size, SubMenuIconWidthRequest, SubMenuIconHeightRequest) * DeviceScale;
subMenuIconPosition.X = (float)skSubMenuIconX + (float)((SubMenuIconWidthRequest - _subMenuIconSize.Width) / 2) * DeviceScale;
subMenuIconPosition.Y = (float)skSubMenuIconY + (float)((SubMenuIconHeightRequest - _subMenuIconSize.Height) / 2) * DeviceScale;
subMenuIconMatrix.SetScaleTranslate(scale, scale, subMenuIconPosition.X, subMenuIconPosition.Y);
using (var paint = new SKPaint())
{
Color color = GetActualSubMenuIconColor();
paint.ColorFilter = SKColorFilter.CreateBlendMode(color.ToSKColor(), SKBlendMode.SrcIn);
paint.Style = SKPaintStyle.Fill;
paint.IsAntialias = true;
e.Surface.Canvas.DrawPicture(m_subMenuIconSvg.Picture, ref subMenuIconMatrix, paint);
}
actualSubMenuIconSize = _subMenuIconSize;
}
base.OnPaintForeground(e, new Rectangle(availableSpace.X + _checkBoxSize.Width,
availableSpace.Y,
availableSpace.Width - actualSubMenuIconSize.Width - _checkBoxSize.Width,
availableSpace.Height));
}
/// <summary>
/// Measure icon size
/// </summary>
private Size MeasureSubMenuIcon(double widthConstraint, double heightConstraint)
{
if (SubMenuIconWidthRequest >= 0 && SubMenuIconHeightRequest >= 0)
{
return(new Size(SubMenuIconWidthRequest, SubMenuIconHeightRequest));
}
else
{
if (m_subMenuIconSvg == null)
{
m_subMenuIconSvg = SvgImage.GetSvgImage(SubMenuIconAssemblyName, SubMenuIconResourceKey);
}
float scale = SvgImage.CalculateScale(m_subMenuIconSvg.Picture.CullRect.Size, IconWidthRequest, IconHeightRequest);
return(new Size(m_subMenuIconSvg.Picture.CullRect.Width * scale, m_subMenuIconSvg.Picture.CullRect.Height * scale));
}
}
/// <summary>
/// Paint checkbox
/// </summary>
/// <param name="e"></param>
protected override void OnPaintSelectionElement(SKPaintSurfaceEventArgs e)
{
if (_checkMarkSvg == null && string.IsNullOrEmpty(CheckMarkIconAssemblyName) == false && string.IsNullOrEmpty(CheckMarkIconResourceKey) == false)
{
_checkMarkSvg = SvgImage.GetSvgImage(CheckMarkIconAssemblyName, CheckMarkIconResourceKey);
}
Rectangle checkBoxAvailableLocation = new Rectangle();
Rectangle availableSpace = new Rectangle(EllipseDiameter, EllipseDiameter, Width, Height - Padding.VerticalThickness);
if (CheckBoxLocation == HorizontalLocations.Left)
{
checkBoxAvailableLocation = availableSpace;
}
else
{
checkBoxAvailableLocation = new Rectangle(availableSpace.Width - CheckBoxWidthRequest - CheckBoxMargin.HorizontalThickness + EllipseDiameter, EllipseDiameter, availableSpace.Width, availableSpace.Height);
}
Rectangle checkBoxActualLocation = CheckBoxActualLocation(checkBoxAvailableLocation);
float skCheckBoxBorderThickness = (float)CheckBoxBorderThickness * DeviceScale;
float skCheckBoxX = (float)checkBoxActualLocation.X * DeviceScale;
float skCheckBoxY = (float)checkBoxActualLocation.Y * DeviceScale;
float skCheckBoxWidth = (float)CheckBoxWidthRequest * DeviceScale;
float skCheckBoxHeight = (float)CheckBoxHeightRequest * DeviceScale;
float skCornerRadius = (float)CheckBoxCornerRadius * DeviceScale;
SKMatrix checkMarkMatrix = new SKMatrix();
SKPoint checkMarkPosition = new SKPoint();
Size checkMarkIconSize = new Size(CheckBoxWidthRequest - CheckMarkIconMargin.HorizontalThickness, CheckBoxHeightRequest - CheckMarkIconMargin.VerticalThickness);
float scale = SvgImage.CalculateScale(_checkMarkSvg.Picture.CullRect.Size, checkMarkIconSize.Width, checkMarkIconSize.Height);
Size actualCheckMarkIconSize = new Size(_checkMarkSvg.Picture.CullRect.Width * scale, _checkMarkSvg.Picture.CullRect.Height * scale);
scale = scale * DeviceScale;
checkMarkPosition.X = (float)skCheckBoxX + (float)((CheckBoxWidthRequest - actualCheckMarkIconSize.Width) / 2) * DeviceScale;
checkMarkPosition.Y = (float)skCheckBoxY + (float)((CheckBoxHeightRequest - actualCheckMarkIconSize.Height) / 2) * DeviceScale;
checkMarkMatrix.SetScaleTranslate(scale, scale, checkMarkPosition.X, checkMarkPosition.Y);
SKRect checkBoxPaintRect = new SKRect(skCheckBoxX + skCheckBoxBorderThickness / 2,
skCheckBoxY + skCheckBoxBorderThickness / 2,
skCheckBoxX + skCheckBoxWidth - skCheckBoxBorderThickness / 2,
skCheckBoxY + skCheckBoxHeight - skCheckBoxBorderThickness / 2);
if (EllipseDiameter > 0 && _toggledAnimationProcess > 0 && _toggledAnimationProcess < 1 && IsEllipseAnimationEnabled)
{
SKPaint ellipsePaint = new SKPaint()
{
IsAntialias = true,
Style = SKPaintStyle.Fill,
};
if (_toggledAnimationProcess <= 0.5)
{
ellipsePaint.Color = EllipseColor.MultiplyAlpha(_toggledAnimationProcessWithoutEasing * 2).ToSKColor();
}
else
{
ellipsePaint.Color = EllipseColor.MultiplyAlpha(1 - (_toggledAnimationProcessWithoutEasing - 0.5) * 2).ToSKColor();
}
e.Surface.Canvas.DrawCircle(new SKPoint(checkBoxPaintRect.MidX, checkBoxPaintRect.MidY), (float)(EllipseDiameter / 2) * DeviceScale, ellipsePaint);
}
Color backgroundColor = Color.Transparent;
if (CheckBoxBackgroundColor != null && CheckBoxBackgroundColor != Color.Transparent && ToggledCheckBoxBackgroundColor != null && ToggledCheckBoxBackgroundColor != Color.Transparent)
{
backgroundColor = AnimationUtils.ColorTransform(_toggledAnimationProcess, CheckBoxBackgroundColor, ToggledCheckBoxBackgroundColor);
}
else if ((CheckBoxBackgroundColor == null || CheckBoxBackgroundColor == Color.Transparent) && ToggledCheckBoxBackgroundColor != null && ToggledCheckBoxBackgroundColor != Color.Transparent)
{
backgroundColor = ToggledCheckBoxBackgroundColor;
}
else
{
backgroundColor = CheckBoxBackgroundColor;
}
SKPaint checkBoxBackgroundPaint = new SKPaint
{
Style = SKPaintStyle.Fill,
IsAntialias = true,
Color = backgroundColor.ToSKColor(),
};
SKRect rect = new SKRect(
skCheckBoxX + skCheckBoxBorderThickness,
skCheckBoxY + skCheckBoxBorderThickness,
skCheckBoxX + skCheckBoxWidth - skCheckBoxBorderThickness,
skCheckBoxY + skCheckBoxHeight - skCheckBoxBorderThickness);
e.Surface.Canvas.Save();
SKRect r = SKRect.Create(rect.Left, rect.Top, rect.Width, rect.Height);
if (_toggledAnimationProcess <= 0.75)
{
float v = (float)(_toggledAnimationProcess * (1 / 0.75));
r.Inflate(-rect.Width * v / 2, -rect.Height * v / 2);
e.Surface.Canvas.ClipRect(r, SKClipOperation.Difference);
}
e.Surface.Canvas.DrawRoundRect(checkBoxPaintRect, skCornerRadius, skCornerRadius, checkBoxBackgroundPaint);
e.Surface.Canvas.Restore();
SKPaint checkBoxBorderPaint = new SKPaint
{
Style = SKPaintStyle.Stroke,
IsAntialias = true,
StrokeWidth = skCheckBoxBorderThickness,
Color = AnimationUtils.ColorTransform(_toggledAnimationProcess, CheckBoxBorderColor, ToggledCheckBoxBorderColor).ToSKColor(),
};
e.Surface.Canvas.DrawRoundRect(checkBoxPaintRect, skCornerRadius, skCornerRadius, checkBoxBorderPaint);
using (var paint = new SKPaint())
{
Color color = Color.Transparent;
if (_toggledAnimationProcess > 0.75)
{
float v = (float)((_toggledAnimationProcess - 0.75) * (1 / 0.25));
color = AnimationUtils.ColorTransform(v, CheckMarkIconColor, ToggledCheckMarkIconColor);
}
if (color != Color.Transparent)
{
paint.ColorFilter = SKColorFilter.CreateBlendMode(color.ToSKColor(), SKBlendMode.SrcIn);
paint.Style = SKPaintStyle.Fill;
paint.IsAntialias = true;
e.Surface.Canvas.DrawPicture(_checkMarkSvg.Picture, ref checkMarkMatrix, paint);
}
}
}