public static void SetColorFilter(this ADrawable drawable, Graphics.Color color, FilterMode mode)
{
if (drawable == null)
{
return;
}
drawable.SetColorFilter(color.ToPlatform(), mode);
}
public static void UpdateTextColor(this TextView textView, ITextStyle textStyle, Graphics.Color?defaultColor)
{
var textColor = textStyle.TextColor?.ToPlatform() ?? defaultColor?.ToPlatform();
if (textColor != null)
{
textView.SetTextColor(textColor.Value);
}
}
public static void UpdateThumbColor(this UISwitch uiSwitch, ISwitch view, UIColor?defaultThumbColor)
{
if (view == null)
{
return;
}
Graphics.Color thumbColor = view.ThumbColor;
uiSwitch.ThumbTintColor = thumbColor?.ToPlatform() ?? defaultThumbColor;
}
public static void UpdateTextColor(this EditText editText, Graphics.Color textColor)
{
if (textColor != null)
{
var androidColor = textColor.ToPlatform();
if (!editText.TextColors.IsOneColor(ColorStates.EditText, androidColor))
{
editText.SetTextColor(ColorStateListExtensions.CreateEditText(androidColor));
}
}
}
public static void UpdatePlaceholderColor(this EditText editText, Graphics.Color placeholderTextColor)
{
if (placeholderTextColor != null)
{
var androidColor = placeholderTextColor.ToPlatform();
if (!editText.HintTextColors.IsOneColor(ColorStates.EditText, androidColor))
{
editText.SetHintTextColor(ColorStateListExtensions.CreateEditText(androidColor));
}
}
}
public static void UpdateThumbColor(this UISwitch uiSwitch, ISwitch view)
{
if (view == null)
{
return;
}
Graphics.Color thumbColor = view.ThumbColor;
if (thumbColor != null)
{
uiSwitch.ThumbTintColor = thumbColor?.ToPlatform();
}
}
public static void SetColorFilter(this ADrawable drawable, Graphics.Color color, FilterMode mode, AColorFilter?defaultColorFilter)
{
if (drawable == null)
{
return;
}
if (color == null)
{
SetColorFilter(drawable, defaultColorFilter);
}
else
{
drawable.SetColorFilter(color.ToPlatform(), mode);
}
}
internal static ColorStateList GetColorStateList(this AppCompatCheckBox platformCheckBox, ICheckBox check)
{
AColor tintColor;
// For the moment, we're only supporting solid color Paint for the Android Checkbox
if (check.Foreground is SolidPaint solid)
{
var color = solid.Color;
tintColor = color.ToPlatform();
}
else
{
Graphics.Color accent = platformCheckBox.Context?.GetAccentColor() ?? Graphics.Color.FromArgb("#ff33b5e5");
tintColor = accent.ToPlatform();
}
return(ColorStateListExtensions.CreateCheckBox(tintColor));
}
void DrawShadow(Canvas canvas)
{
if (_shadowCanvas == null)
{
_shadowCanvas = new Canvas();
}
if (_shadowPaint == null)
{
_shadowPaint = new Android.Graphics.Paint
{
AntiAlias = true,
Dither = true,
FilterBitmap = true
}
}
;
Graphics.Color solidColor = null;
// If need to redraw shadow
if (_invalidateShadow)
{
var viewHeight = _viewBounds.Height();
var viewWidth = _viewBounds.Width();
if (GetChildAt(0) is AView child)
{
if (viewHeight == 0)
{
viewHeight = child.MeasuredHeight;
}
if (viewWidth == 0)
{
viewWidth = child.MeasuredWidth;
}
}
// If bounds is zero
if (viewHeight != 0 && viewWidth != 0)
{
var bitmapHeight = viewHeight + MaximumRadius;
var bitmapWidth = viewWidth + MaximumRadius;
// Reset bitmap to bounds
_shadowBitmap = Bitmap.CreateBitmap(
bitmapWidth, bitmapHeight, Bitmap.Config.Argb8888
);
// Reset Canvas
_shadowCanvas.SetBitmap(_shadowBitmap);
_invalidateShadow = false;
// Create the local copy of all content to draw bitmap as a
// bottom layer of natural canvas.
base.DispatchDraw(_shadowCanvas);
// Get the alpha bounds of bitmap
Bitmap extractAlpha = _shadowBitmap.ExtractAlpha();
// Clear past content content to draw shadow
_shadowCanvas.DrawColor(Android.Graphics.Color.Black, PorterDuff.Mode.Clear);
var shadowOpacity = (float)Shadow.Opacity;
if (Shadow.Paint is LinearGradientPaint linearGradientPaint)
{
var linearGradientShaderFactory = PaintExtensions.GetLinearGradientShaderFactory(linearGradientPaint, shadowOpacity);
_shadowPaint.SetShader(linearGradientShaderFactory.Resize(bitmapWidth, bitmapHeight));
}
if (Shadow.Paint is RadialGradientPaint radialGradientPaint)
{
var radialGradientShaderFactory = PaintExtensions.GetRadialGradientShaderFactory(radialGradientPaint, shadowOpacity);
_shadowPaint.SetShader(radialGradientShaderFactory.Resize(bitmapWidth, bitmapHeight));
}
if (Shadow.Paint is SolidPaint solidPaint)
{
solidColor = solidPaint.ToColor();
#pragma warning disable CA1416 // https://github.com/xamarin/xamarin-android/issues/6962
_shadowPaint.Color = solidColor.WithAlpha(shadowOpacity).ToPlatform();
#pragma warning restore CA1416
}
// Apply the shadow radius
var radius = Shadow.Radius;
if (radius <= 0)
{
radius = 0.01f;
}
if (radius > 100)
{
radius = MaximumRadius;
}
_shadowPaint.SetMaskFilter(new BlurMaskFilter(radius, BlurMaskFilter.Blur.Normal));
float shadowOffsetX = (float)Shadow.Offset.X;
float shadowOffsetY = (float)Shadow.Offset.Y;
if (Clip == null)
{
_shadowCanvas.DrawBitmap(extractAlpha, shadowOffsetX, shadowOffsetY, _shadowPaint);
}
else
{
var bounds = new Graphics.RectF(0, 0, canvas.Width, canvas.Height);
var path = Clip.PathForBounds(bounds)?.AsAndroidPath();
path.Offset(shadowOffsetX, shadowOffsetY);
_shadowCanvas.DrawPath(path, _shadowPaint);
}
// Recycle and clear extracted alpha
extractAlpha.Recycle();
}
else
{
// Create placeholder bitmap when size is zero and wait until new size coming up
_shadowBitmap = Bitmap.CreateBitmap(1, 1, Bitmap.Config.Rgb565 !);
}
}
// Reset alpha to draw child with full alpha
if (solidColor != null)
#pragma warning disable CA1416 // https://github.com/xamarin/xamarin-android/issues/6962
{
_shadowPaint.Color = solidColor.ToPlatform();
}
#pragma warning restore CA1416
// Draw shadow bitmap
if (_shadowCanvas != null && _shadowBitmap != null && !_shadowBitmap.IsRecycled)
{
canvas.DrawBitmap(_shadowBitmap, 0.0F, 0.0F, _shadowPaint);
}
}
void ClearShadowResources()
{
_shadowCanvas?.Dispose();
_shadowPaint?.Dispose();
_shadowBitmap?.Dispose();
_shadowCanvas = null;
_shadowPaint = null;
_shadowBitmap = null;
}
}
public static void UpdateTextColor(this EditText editText, Graphics.Color textColor)
{
if (textColor != null)
{
if (PlatformInterop.CreateEditTextColorStateList(editText.TextColors, textColor.ToPlatform()) is ColorStateList c)
{
editText.SetTextColor(c);
}
}
}
public static void UpdatePlaceholderColor(this EditText editText, Graphics.Color placeholderTextColor)
{
if (placeholderTextColor != null)
{
if (PlatformInterop.CreateEditTextColorStateList(editText.HintTextColors, placeholderTextColor.ToPlatform()) is ColorStateList c)
{
editText.SetHintTextColor(c);
}
}
}
