private void DrawBorder(CGContext ctx)
{
if (!HasBorder())
{
return;
}
if (IsBorderDashed())
{
ctx.SetLineDash(0, new [] { (nfloat)_dashWidth, (nfloat)_dashGap });
}
// Stroke is inner, the outer will be clipped. So double the value to get the real one!
ctx.SetLineWidth(2 * _strokeWidth);
ctx.AddPath(GetRoundCornersPath(Bounds).CGPath);
if (HasBorderGradient())
{
ctx.ReplacePathWithStrokedPath();
ctx.Clip();
var startPoint = new CGPoint(_strokePositions[0] * Bounds.Width, _strokePositions[1] * Bounds.Height);
var endPoint = new CGPoint(_strokePositions[2] * Bounds.Width, _strokePositions[3] * Bounds.Height);
var gradient = new CGGradient(CGColorSpace.CreateDeviceRGB(), _strokeColors, _strokeColorPositions);
ctx.DrawLinearGradient(gradient, startPoint, endPoint, CGGradientDrawingOptions.None);
}
else if (_strokeColor != null)
{
ctx.SetStrokeColor(_strokeColor.CGColor);
ctx.DrawPath(CGPathDrawingMode.Stroke);
}
}
public static UIImage MakeBlueSea()
{
UIGraphics.BeginImageContext(new System.Drawing.SizeF(640,1136));
//BEGIN PAINTCODE
//// General Declarations
var colorSpace = CGColorSpace.CreateDeviceRGB();
var context = UIGraphics.GetCurrentContext();
//// Color Declarations
UIColor color = UIColor.FromRGBA(0.114f, 0.705f, 1.000f, 1.000f);
UIColor gradientColor = UIColor.FromRGBA(0.088f, 0.606f, 0.676f, 1.000f);
UIColor gradientColor2 = UIColor.FromRGBA(0.018f, 0.509f, 0.675f, 1.000f);
//// Gradient Declarations
var gradientColors = new CGColor [] {color.CGColor, UIColor.FromRGBA(0.066f, 0.607f, 0.837f, 1.000f).CGColor, gradientColor2.CGColor, gradientColor.CGColor};
var gradientLocations = new float [] {0, 0.21f, 0.46f, 1};
var gradient = new CGGradient(colorSpace, gradientColors, gradientLocations);
//// Rectangle Drawing
var rectanglePath = UIBezierPath.FromRect(new RectangleF(-46.5f, -35.5f, 728, 1192));
context.SaveState();
rectanglePath.AddClip();
context.DrawLinearGradient(gradient, new PointF(317.5f, -35.5f), new PointF(317.5f, 1156.5f), 0);
context.RestoreState();
UIColor.Black.SetStroke();
rectanglePath.LineWidth = 1;
rectanglePath.Stroke();
//END PAINTCODE
var converted = UIGraphics.GetImageFromCurrentImageContext ();
UIGraphics.EndImageContext ();
return converted;
}
private UIImage GetGradientImage(CGSize size)
{
var c1 = (Element as GradientLabel).TextColor1.ToCGColor();
var c2 = (Element as GradientLabel).TextColor2.ToCGColor();
UIGraphics.BeginImageContextWithOptions(size, false, 0);
var context = UIGraphics.GetCurrentContext();
if (context == null)
{
return(null);
}
context.SetFillColor(UIColor.Blue.CGColor);
context.FillRect(new RectangleF(new PointF(0, 0), new SizeF((float)size.Width, (float)size.Height)));
var left = new CGPoint(0, 0);
var right = new CGPoint(size.Width, 0);
var colorspace = CGColorSpace.CreateDeviceRGB();
var gradient = new CGGradient(colorspace, new CGColor[] { c1, c2 }, new nfloat[] { 0f, 1f });
context.DrawLinearGradient(gradient, left, right, CGGradientDrawingOptions.DrawsAfterEndLocation);
var img = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
return(img);
}
static MessageSummaryView ()
{
using (var colorspace = CGColorSpace.CreateDeviceRGB ())
{
gradient = new CGGradient (colorspace, new float [] { /* first */ .52f, .69f, .96f, 1, /* second */ .12f, .31f, .67f, 1 }, null); //new float [] { 0, 1 });
}
}
public void OnSettingsLineRadarDataSet <TEntry>(ILineRadarDataSetXF <TEntry> baseDataSetXF, LineRadarChartDataSet originalBaseDataSet) where TEntry : BaseEntry
{
OnSettingsLineScatterCandleRadarDataSet(baseDataSetXF, originalBaseDataSet);
if (baseDataSetXF.IF_GetGradientColor() != null)
{
var gradientData = baseDataSetXF.IF_GetGradientColor();
var gradient = new CGGradient(CGColorSpace.CreateDeviceRGB(), new CGColor[] { gradientData.StartColor.ToCGColor(), gradientData.EndColor.ToCGColor() });
originalBaseDataSet.Fill = ChartFill.FillWithLinearGradient(NSObject.FromObject(gradient), NSNumber.FromFloat(gradientData.Angle));
}
if (baseDataSetXF.IF_GetFillColor().HasValue)
{
originalBaseDataSet.FillColor = baseDataSetXF.IF_GetFillColor().Value.ToUIColor();
}
if (baseDataSetXF.IF_GetFillAlpha().HasValue)
{
originalBaseDataSet.FillAlpha = baseDataSetXF.IF_GetFillAlpha().Value;
}
if (baseDataSetXF.IF_GetLineWidth().HasValue)
{
originalBaseDataSet.LineWidth = baseDataSetXF.IF_GetLineWidth().Value;
}
if (baseDataSetXF.IF_GetDrawFilled().HasValue)
{
originalBaseDataSet.DrawFilledEnabled = baseDataSetXF.IF_GetDrawFilled().Value;
}
}
public override void Draw(RectangleF rect)
{
using (CGContext context = UIGraphics.GetCurrentContext())
{
switch (_Style)
{
case SIAlertViewBackgroundStyle.Gradient:
{
float[] locations = { 0.0f, 1.0f };
float[] colors = { 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.75f };
CGGradient gradient = new CGGradient(CGColorSpace.CreateDeviceRGB(), colors, locations);
PointF center = new PointF(Bounds.Size.Width / 2, Bounds.Size.Height / 2);
float radius = Math.Min(Bounds.Size.Width, Bounds.Size.Height);
context.DrawRadialGradient(gradient, center, 0, center, radius, CGGradientDrawingOptions.DrawsAfterEndLocation);
break;
}
case SIAlertViewBackgroundStyle.Solid:
{
UIColor.FromWhiteAlpha(0f, 0.5f).SetColor();
context.SetFillColorWithColor(UIColor.FromWhiteAlpha(0f, 0.5f).CGColor);
context.FillRect(Bounds);
break;
}
}
}
}
public override void Draw(CGRect rect)
{
base.Draw(rect);
var step = 1f / 6f;
var locations = new nfloat[]
{
0.0f,
step * 1f,
step * 2f,
step * 3f,
step * 4f,
step * 5f,
1.0f
};
var colors = new CGColor[]
{
UIColor.Red.CGColor,
new CGColor(1, 0, 1, 1),
UIColor.Blue.CGColor,
new CGColor(0, 1, 1, 1),
UIColor.Green.CGColor,
new CGColor(1, 1, 0, 1),
UIColor.Red.CGColor
};
using (var colorSpace = CGColorSpace.CreateDeviceRGB())
using (var gradiend = new CGGradient(colorSpace, colors, locations))
{
var context = UIGraphics.GetCurrentContext();
context.DrawLinearGradient(gradiend, new CGPoint(rect.Size.Width, 0), new CGPoint(0, 0), CGGradientDrawingOptions.DrawsBeforeStartLocation);
}
}
public void DrawLayer(CALayer layer, CGContext context)
{
nfloat gradStart = .15f;
if (BlinkingCountdown > 0)
{
BlinkingCountdown--;
gradStart += .15f * ((nfloat)BlinkingCountdown / (BlinkCount - 1));
}
var gradient = new CGGradient(
CGColorSpace.CreateDeviceRGB(),
new CGColor[] { DarkendedColor, Color },
new nfloat[] { gradStart, 1 }
);
context.DrawRadialGradient(
gradient,
new CGPoint(layer.Frame.Width / 2, layer.Frame.Width / 2),
Ring.InnerRadiusLocation,
new CGPoint(layer.Frame.Width / 2, layer.Frame.Width / 2),
Ring.OuterRadiusLocation,
CGGradientDrawingOptions.None
);
}
public static CGGradient CreateGradient(List <UIColor> colors, List <float> points)
{
List <nfloat> colorf = new List <nfloat>();
foreach (UIColor c in colors)
{
nfloat r, g, b, a;
c.GetRGBA(out r, out g, out b, out a);
colorf.Add(r);
colorf.Add(g);
colorf.Add(b);
colorf.Add(a);
}
nfloat [] components = colorf.ToArray();
nfloat[] locations = new nfloat[points.Count];
for (int i = 0; i < points.Count; i++)
{
locations[i] = points[i];
}
CGColorSpace space = CGColorSpace.CreateDeviceRGB();
CGGradient normalGradient = new CGGradient(space, components, locations);
space.Dispose();
return(normalGradient);
}
public override void Draw(RectangleF rect)
{
CGContext context = UIGraphics.GetCurrentContext();
switch (this.mask)
{
case SVProgressHUDMask.Black: {
UIColor.FromWhiteAlpha(0f, 0.5f).SetColor();
context.FillRect(this.Bounds);
break;
}
case SVProgressHUDMask.Gradient: {
float[] locations = new float[2] {
0.0f, 1.0f
};
float[] colors = new float[8] {
0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.75f
};
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
CGGradient gradient = new CGGradient(colorSpace, colors, locations);
colorSpace.Dispose();
PointF center = new PointF(this.Bounds.Size.Width / 2f, this.Bounds.Size.Height / 2f);
float radius = Math.Min(this.Bounds.Size.Width, this.Bounds.Size.Height);
context.DrawRadialGradient(gradient, center, 0, center, radius, CGGradientDrawingOptions.DrawsAfterEndLocation);
gradient.Dispose();
break;
}
}
}
public void Draw(GraphicsHandler graphics, RectangleF rect)
{
var start = StartPoint;
var end = EndPoint;
if (transform != null)
{
start = transform.TransformPoint(start);
end = transform.TransformPoint(end);
}
if (wrap == GradientWrapMode.Pad)
{
if (Gradient == null)
{
Gradient = new CGGradient(CGColorSpace.CreateDeviceRGB(), new [] { StartColor, EndColor }, new nnfloat[] { (nnfloat)0f, (nnfloat)1f });
}
}
else
{
var scale = GradientHelper.GetLinearScale(ref start, ref end, rect, lastScale, wrap == GradientWrapMode.Reflect ? 2f : 1f);
if (Gradient == null || scale > lastScale)
{
var stops = GradientHelper.GetGradientStops(StartColor, EndColor, scale, wrap).ToList();
Gradient = new CGGradient(CGColorSpace.CreateDeviceRGB(), stops.Select(r => r.Item2).ToArray(), stops.Select(r => (nnfloat)r.Item1).ToArray());
lastScale = scale;
}
}
var context = graphics.Control;
context.DrawLinearGradient(Gradient, start.ToNS(), end.ToNS(), CGGradientDrawingOptions.DrawsAfterEndLocation | CGGradientDrawingOptions.DrawsBeforeStartLocation);
}
private static void DrawSeparator(CGContext canvas, nfloat pos, nfloat separatorWidth, nfloat startY, nfloat restY, UIColor color1)
{
canvas.SaveState();
canvas.SetLineWidth(0);
var path = new CGPath();
//path.AddLines(points.ToArray());
path.AddLines(new[] { new CGPoint(pos, startY), new CGPoint(pos, startY + restY), new CGPoint(pos + separatorWidth, startY + restY), new CGPoint(pos + separatorWidth, startY) });
path.CloseSubpath();
canvas.AddPath(path);
//canvas.FillRect(new CGRect(pos, startY, separatorWidth, restY));
canvas.Clip();
using (var rgb = CGColorSpace.CreateDeviceRGB())
{
var gradient = new CGGradient(rgb, new[]
{
new CGColor(color1.CGColor, 0.25f),
new CGColor(color1.CGColor, 0.5f)
});
canvas.DrawLinearGradient(gradient,
//new CGPoint(path.BoundingBox.Left, path.BoundingBox.Top),
//new CGPoint(path.BoundingBox.Right, path.BoundingBox.Bottom),
new CGPoint(0, startY),
new CGPoint(0, startY + restY),
CGGradientDrawingOptions.DrawsBeforeStartLocation);
}
canvas.RestoreState();
}
public override void Draw(CGRect rect)
{
base.Draw(rect);
CGGradient gradient = null;
using (CGColorSpace rgb = CGColorSpace.CreateDeviceRGB())
{
gradient = new CGGradient(rgb, new CGColor[]
{
_startColor.ToCGColor(),
_middleColor.ToCGColor(),
_endColor.ToCGColor()
});
}
var start = new CGPoint(0, 0);
var end = new CGPoint(rect.Width, rect.Height);
for (var i = 0; i < Subviews.Length; i++)
{
var child = Subviews[i];
if (child is FrameRenderer_iOS gFrame)
{
gFrame.Gradient = gradient;
gFrame.Start = start;
gFrame.End = end;
}
}
}
public override void Draw(CGRect rect)
{
using (var context = UIGraphics.GetCurrentContext())
{
switch (_maskType)
{
case MaskType.Black:
UIColor.FromWhiteAlpha(0f, 0.5f).SetColor();
context.FillRect(Bounds);
break;
case MaskType.Gradient:
nfloat[] colors = new nfloat[] { 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.75f };
nfloat[] locations = new nfloat[] { 0.0f, 1.0f };
using (var colorSpace = CGColorSpace.CreateDeviceRGB())
{
using (var gradient = new CGGradient(colorSpace, colors, locations))
{
var center = new CGPoint(Bounds.Size.Width / 2, Bounds.Size.Height / 2);
float radius = Math.Min((float)Bounds.Size.Width, (float)Bounds.Size.Height);
context.DrawRadialGradient(gradient, center, 0, center, radius, CGGradientDrawingOptions.DrawsAfterEndLocation);
}
}
break;
}
}
}
public override void DrawInContext(CGContext ctx)
{
base.DrawInContext(ctx);
//Debug.WriteLine($"---{this.Radius}");
//每四个一组 表示一个颜色 ｛r,g,b,a ,r,g,b,a｝
//var components = new nfloat[] { 1, 1, 1, 1, 1, 1, 1, 0 };
var colors = new CGColor[]
{
new CGColor(0.49f, 0.49f, 0.49f, 0.5f),
new CGColor(0.78f, 0.78f, 0.78f, 0.2f),
};
//表示渐变的开始位置
var locations = new nfloat[] { 0f, 1f };
var startCenter = this.Center;//new CGPoint(100, 100);
var endCenter = this.Center;//new CGPoint(100, 100);
nfloat startRadius = 0f;
//nfloat endRadius = (nfloat)Math.Min(this.Frame.Width, this.Frame.Height) / 1.3f;
nfloat endRadius = this.Radius;
using (var colorSpace = CGColorSpace.CreateDeviceRGB())
using (var gradient = new CGGradient(colorSpace, colors, locations))
{
ctx.DrawRadialGradient(gradient,
startCenter,
startRadius,
endCenter,
endRadius,
CGGradientDrawingOptions.DrawsAfterEndLocation);
}
}
//Generated with PaintCode 2.2
public override void Draw(CGRect rect)
{
base.Draw(rect);
// General Declarations
var colorSpace = CGColorSpace.CreateDeviceRGB();
var context = UIGraphics.GetCurrentContext();
// Color Declarations
var darkBlue = UIColor.FromRGBA(0.053f, 0.123f, 0.198f, 1.000f);
var lightBlue = UIColor.FromRGBA(0.191f, 0.619f, 0.845f, 1.000f);
// Gradient Declarations
var backgroundGradientColors = new CGColor [] { lightBlue.CGColor, darkBlue.CGColor };
var backgroundGradientLocations = new nfloat [] { 0.0f, 1.0f };
var backgroundGradient = new CGGradient(colorSpace, backgroundGradientColors, backgroundGradientLocations);
// Rectangle Drawing
var rectangleRect = new CGRect(rect.GetMinX() + (float)Math.Floor(rect.Width * -0.12917f + 0.5f), rect.GetMinY() + (float)Math.Floor(rect.Height * 0.00000f + 0.5f), (float)Math.Floor(rect.Width * 1.00000f + 0.5f) - (float)Math.Floor(rect.Width * -0.12917f + 0.5f), (float)Math.Floor(rect.Height * 1.00000f + 0.5f) - (float)Math.Floor(rect.Height * 0.00000f + 0.5f));
var rectanglePath = UIBezierPath.FromRect(rectangleRect);
context.SaveState();
rectanglePath.AddClip();
context.DrawLinearGradient(backgroundGradient,
new PointF((float)rectangleRect.GetMidX(), (float)rectangleRect.GetMinY()),
new PointF((float)rectangleRect.GetMidX(), (float)rectangleRect.GetMaxY()),
0);
context.RestoreState();
}
static AircraftTableViewCell()
{
DefaultPhoto = UIImage.FromResource(typeof(AircraftTableViewCell).Assembly, "FlightLog.Images.mini-plane72.png");
//NSString ns = new NSString ("MMMMMM");
//Console.WriteLine ("Width needed is: {0}", ns.DrawString (new RectangleF (0, 0, 200, 30), TailNumberFont).Width);
//TailNumberWidth = ns.DrawString (new RectangleF (0, 0, 200, TailNumberSize), TailNumberFont).Width;
using (var rgb = CGColorSpace.CreateDeviceRGB()) {
float [] colorsBottom =
{
1.00f, 1.00f, 1.00f, 0.5f,
0.93f, 0.93f, 0.93f, 0.5f
};
BottomGradient = new CGGradient(rgb, colorsBottom, null);
float [] colorsTop =
{
0.93f, 0.93f, 0.93f, 0.5f,
1.00f, 1.00f, 1.00f, 0.5f
};
TopGradient = new CGGradient(rgb, colorsTop, null);
}
}
public override void Draw(CGRect rect)
{
//Stopwatch s = new Stopwatch();
//s.Start();
//Console.WriteLine (" ----- SatBrightPickerView Draw");
CGContext context = UIGraphics.GetCurrentContext();
CGColor[] gradColors = new CGColor[] { UIColor.FromHSBA(hue, 1, 1, 1).CGColor, new CGColor(1, 1, 1, 1) };
nfloat[] gradLocations = new nfloat[] { 0.0f, 1.0f };
var colorSpace = CGColorSpace.CreateDeviceRGB();
CGGradient gradient = new CGGradient(colorSpace, gradColors, gradLocations);
context.DrawLinearGradient(gradient, new CGPoint(rect.Size.Width, 0), new CGPoint(0, 0), CGGradientDrawingOptions.DrawsBeforeStartLocation);
gradColors = new CGColor[] { new CGColor(0, 0, 0, 0), new CGColor(0, 0, 0, 1) };
gradient = new CGGradient(colorSpace, gradColors, gradLocations);
context.DrawLinearGradient(gradient, new CGPoint(0, 0), new CGPoint(0, rect.Size.Height), CGGradientDrawingOptions.DrawsBeforeStartLocation);
gradient.Dispose();
colorSpace.Dispose();
//s.Stop();
//Console.WriteLine("-----> SatBright Draw time: " + s.Elapsed.ToString());
} //draw
public override void Draw(CGRect rect)
{
//base.Draw(rect);
GradientView formsGradientView = Element as GradientView;
var currentContext = UIGraphics.GetCurrentContext();
currentContext.SaveState();
var colorSpace = CGColorSpace.CreateDeviceRGB();
var startColor = formsGradientView.StartColor;
var startColorComponents = startColor.ToCGColor().Components;
var middleColor = formsGradientView.MiddleColor;
var middleColorComponents = middleColor.ToCGColor().Components;
var endColor = formsGradientView.EndColor;
var endColorComponents = endColor.ToCGColor().Components;
nfloat[] colorComponents =
{
startColorComponents[0], startColorComponents[1], startColorComponents[2], startColorComponents[3],
middleColorComponents[0], middleColorComponents[1], middleColorComponents[2], middleColorComponents[3],
endColorComponents[0], endColorComponents[1], endColorComponents[2], endColorComponents[3]
};
nfloat[] locations = { 0f, 0.5f, 1f };
var gradient = new CGGradient(colorSpace, colorComponents, locations);
var startPoint = new CGPoint(0, NativeView.Bounds.Height);
var endPoint = new CGPoint(NativeView.Bounds.Width, NativeView.Bounds.Height);
currentContext.DrawLinearGradient(gradient, startPoint, endPoint, CGGradientDrawingOptions.None);
currentContext.RestoreState();
}
public static void Draw(this LinearGradient target, CGContext ctx, CGRect bounds)
{
target.Update();
CGRect clippingBounds = bounds;
if (!target.Frame.IsEmpty)
{
bounds = new CGRect(target.Frame.X, target.Frame.Y, target.Frame.Width, target.Frame.Height);
}
var gradColors = GenerateGradientColors(target.Colors);
var colorSpace = CGColorSpace.CreateDeviceRGB();
var grad = new CGGradient(colorSpace, gradColors, ConvertToNativeArray(target.Locations));
var points = DetermineGradientPoints(target);
var startPoint = new CGPoint(points[0] * bounds.Width, points[1] * bounds.Height);
var endPoint = new CGPoint(points[2] * bounds.Width, points[3] * bounds.Height);
var drawingFlags = GetGradientFlags(target);
ctx.SaveState();
if (!target.Frame.IsEmpty)
{
ctx.ClipToRect(new CGRect(bounds.X + clippingBounds.X, bounds.Y + clippingBounds.Y, clippingBounds.Width, clippingBounds.Height));
}
ctx.DrawLinearGradient(grad, startPoint, endPoint, drawingFlags);
ctx.RestoreState();
grad.Dispose();
colorSpace.Dispose();
}
void Renderer_Element_SizeChanged(object sender, EventArgs e)
{
var element = sender as GradientView;
if (element == null)
return;
var bounds = element.Bounds;
var rect = new CGRect(bounds.X, bounds.Y, bounds.Width, bounds.Height);
UIGraphics.BeginImageContext(rect.Size);
using (CGContext g = UIGraphics.GetCurrentContext())
{
using (var rgb = CGColorSpace.CreateDeviceRGB())
{
nfloat[] colors = GetFloatArrayFromColors(element.StartColor, element.EndColor);
var gradient = new CGGradient(rgb, colors, null);
g.DrawRadialGradient(gradient, new CGPoint(0, 0), new nfloat(0), new CGPoint(100, 100), new nfloat(1000), CGGradientDrawingOptions.None);
}
using (var im = UIGraphics.GetImageFromCurrentImageContext())
using (var imageHolder = new UIImageView(im))
Container.AddSubview(imageHolder);
UIGraphics.EndImageContext();
}
}
public static void Draw(this EllipticalGradient target, CGContext ctx, CGRect bounds)
{
target.Update();
CGRect clippingBounds = bounds;
if (!target.Frame.IsEmpty)
{
bounds = new CGRect(target.Frame.X, target.Frame.Y, target.Frame.Width, target.Frame.Height);
}
var gradColors = GenerateGradientColors(target.Colors);
var colorSpace = CGColorSpace.CreateDeviceRGB();
var grad = new CGGradient(colorSpace, gradColors, ConvertToNativeArray(target.Locations));
var gradCenter = new CGPoint((bounds.Width * target.Center.X), (bounds.Height * target.Center.Y));
var gradRadius = (nfloat)Math.Min(bounds.Size.Width / 2, bounds.Size.Height / 2);
var drawingFlags = GetGradientFlags(target);
var scaleT = CGAffineTransform.MakeScale(target.Scale.X, target.Scale.Y);
ctx.SaveState();
if (!target.Frame.IsEmpty)
{
ctx.ClipToRect(new CGRect(bounds.X + clippingBounds.X, bounds.Y + clippingBounds.Y, clippingBounds.Width, clippingBounds.Height));
}
ctx.TranslateCTM(bounds.X + gradCenter.X, bounds.Y + gradCenter.Y);
ctx.RotateCTM((nfloat)(target.Rotation * (Math.PI / 180)));
ctx.ScaleCTM(scaleT.xx, scaleT.yy);
ctx.DrawRadialGradient(grad, CGPoint.Empty, 0, CGPoint.Empty, gradRadius, drawingFlags);
ctx.RestoreState();
grad.Dispose();
colorSpace.Dispose();
}
void RenderLinearGradient(CGContext graphics, CGRect pathBounds, LinearGradientBrush brush)
{
using (CGColorSpace rgb = CGColorSpace.CreateDeviceRGB())
{
CGColor[] colors = new CGColor[brush.GradientStops.Count];
nfloat[] locations = new nfloat[brush.GradientStops.Count];
for (int index = 0; index < brush.GradientStops.Count; index++)
{
Color color = brush.GradientStops[index].Color;
colors[index] = new CGColor(new nfloat(color.R), new nfloat(color.G), new nfloat(color.B), new nfloat(color.A));
locations[index] = new nfloat(brush.GradientStops[index].Offset);
}
CGGradient gradient = new CGGradient(rgb, colors, locations);
if (brush.Transform != null)
{
CGAffineTransform transform = (CGAffineTransform)brush.Transform.GetNativeObject();
// TODO: This does not adequately work.
// There is no real SpreadMethod in iOS.
pathBounds = transform.TransformRect(pathBounds);
}
graphics.DrawLinearGradient(gradient, new CGPoint(pathBounds.Left + brush.StartPoint.X * pathBounds.Width,
pathBounds.Top + brush.StartPoint.Y * pathBounds.Height),
new CGPoint(pathBounds.Left + brush.EndPoint.X * pathBounds.Width,
pathBounds.Top + brush.EndPoint.Y * pathBounds.Height),
CGGradientDrawingOptions.DrawsBeforeStartLocation |
CGGradientDrawingOptions.DrawsAfterEndLocation);
}
}
void UpdateGradient()
{
if (_colors == null || _colors.Length < 2)
{
_gradient = null;
return;
}
var colorspace = _colors [0].CGColor.ColorSpace;
var gradientColors = new List <CGColor> ();
foreach (var color in _colors)
{
gradientColors.Add(color.CGColor);
}
nfloat[] gradientLocations = null;
if (Locations != null && Locations.Length == Colors.Length)
{
gradientLocations = Locations;
}
_gradient = new CGGradient(colorspace, gradientColors.ToArray(), gradientLocations);
SetNeedsDisplay();
}
public override void Draw(CGRect rect)
{
using (CGContext context = UIGraphics.GetCurrentContext())
{
switch (_Style)
{
case SIAlertViewBackgroundStyle.Gradient:
{
nfloat[] locations = { 0.0f, 1.0f };
nfloat[] colors = { 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.75f };
CGGradient gradient = new CGGradient(CGColorSpace.CreateDeviceRGB(), colors, locations);
CGPoint center = new CGPoint(Bounds.Size.Width / 2, Bounds.Size.Height / 2);
nfloat radius = (nfloat)Math.Min(Bounds.Size.Width, Bounds.Size.Height);
context.DrawRadialGradient(gradient, center, 0, center, radius, CGGradientDrawingOptions.DrawsAfterEndLocation);
break;
}
case SIAlertViewBackgroundStyle.Solid:
{
UIColor.FromWhiteAlpha(0f, 0.5f).SetColor();
context.SetFillColor(UIColor.FromWhiteAlpha(0f, 0.5f).CGColor);
context.FillRect(Bounds);
break;
}
}
}
}
private void DrawGradientInContext(CGRect rect)
{
//// General Declarations
var colorSpace = CGColorSpace.CreateDeviceRGB();
var context = UIGraphics.GetCurrentContext();
//// Color Declarations
var colorGradientEasyToHardColor = UIColor.FromRGBA(0.19f, 0.58f, 0.17f, 1.0f);
var colorGradientEasyToHardColor2 = UIColor.FromRGBA(0.8f, 0.0f, 0.0f, 0.78f);
//// Gradient Declarations
var colorGradientEasyToHardColors = new CGColor [] {
colorGradientEasyToHardColor.CGColor,
UIColor.FromRGBA(0.5f, 0.3f, 0.09f, 0.9f).CGColor,
colorGradientEasyToHardColor2.CGColor
};
var colorGradientEasyToHardLocations = new nfloat [] { 0.0f, 0.67f, 1.0f };
var colorGradientEasyToHard = new CGGradient(colorSpace, colorGradientEasyToHardColors, colorGradientEasyToHardLocations);
//// Rectangle Drawing
var rectanglePath = UIBezierPath.FromRect(rect);
context.SaveState();
rectanglePath.AddClip();
context.DrawLinearGradient(colorGradientEasyToHard, new CGPoint(0.0f, (rect.Width / 2)), new CGPoint(rect.Width, (rect.Width / 2)), 0);
//context.DrawLinearGradient (colorGradientEasyToHard, new PointF (0.0f, 60.0f), new PointF (240.0f, 60.0f), 0);
context.RestoreState();
//// Text Drawing
CGRect textRect = new CGRect(rect.X, rect.Y, rect.Width, rect.Height);
this.TextColor.SetFill();
textRect.Offset(0.0f, (textRect.Height - new NSString(this.Text).StringSize(this.Font, textRect.Size).Height) / 2.0f);
new NSString(this.Text).DrawString(textRect, this.Font, UILineBreakMode.TailTruncation, UITextAlignment.Center);
}
private void DrawGradient(CGRect rect, CGContext context)
{
//// General Declarations
var colorSpace = CGColorSpace.CreateDeviceRGB();
//// Color Declarations
var colorGradientEasyToHardColor = UIColor.FromRGBA(0.2f, 0.58f, 0.17f, 1.0f);
var colorGradientEasyToHardColor2 = UIColor.FromRGBA(0.8f, 0.000f, 0.000f, 0.8f);
//// Gradient Declarations
var colorGradientEasyToHardColors = new CGColor [] {
colorGradientEasyToHardColor.CGColor,
UIColor.FromRGBA(0.5f, 0.3f, 0.09f, 0.9f).CGColor,
colorGradientEasyToHardColor2.CGColor
};
var colorGradientEasyToHardLocations = new nfloat [] { 0.0f, 0.67f, 1.0f };
var colorGradientEasyToHard = new CGGradient(colorSpace, colorGradientEasyToHardColors, colorGradientEasyToHardLocations);
// Varied rect for different levels
var varirect = new CGRect(rect.X, rect.Y, (float)(this._width * (rect.Width / 10)), rect.Height);
//// White BackGround Drawing
var bgWhitePath = UIBezierPath.FromRect(varirect);
UIColor.White.SetFill();
bgWhitePath.Fill();
//// Rectangle Drawing
var rectanglePath = UIBezierPath.FromRect(varirect);
context.SaveState();
rectanglePath.AddClip();
context.DrawLinearGradient(colorGradientEasyToHard, new CGPoint(0.0f, (rect.Width / 2)), new CGPoint(rect.Width, (rect.Width / 2)), 0);
context.RestoreState();
}
//Generated with PaintCode 2.2
public override void Draw(CGRect rect)
{
base.Draw(rect);
// General Declarations
var colorSpace = CGColorSpace.CreateDeviceRGB();
var context = UIGraphics.GetCurrentContext();
// Color Declarations
var darkBlue = UIColor.FromRGBA(0.053f, 0.123f, 0.198f, 1.000f);
var lightBlue = UIColor.FromRGBA(0.191f, 0.619f, 0.845f, 1.000f);
// Gradient Declarations
var backgroundGradientColors = new CGColor [] {lightBlue.CGColor, darkBlue.CGColor};
var backgroundGradientLocations = new nfloat [] {0.0f, 1.0f};
var backgroundGradient = new CGGradient(colorSpace, backgroundGradientColors, backgroundGradientLocations);
// Rectangle Drawing
var rectangleRect = new CGRect(rect.GetMinX() + (float)Math.Floor(rect.Width * -0.12917f + 0.5f), rect.GetMinY() + (float)Math.Floor(rect.Height * 0.00000f + 0.5f), (float)Math.Floor(rect.Width * 1.00000f + 0.5f) - (float)Math.Floor(rect.Width * -0.12917f + 0.5f), (float)Math.Floor(rect.Height * 1.00000f + 0.5f) - (float)Math.Floor(rect.Height * 0.00000f + 0.5f));
var rectanglePath = UIBezierPath.FromRect(rectangleRect);
context.SaveState();
rectanglePath.AddClip();
context.DrawLinearGradient(backgroundGradient,
new PointF((float)rectangleRect.GetMidX(), (float)rectangleRect.GetMinY()),
new PointF((float)rectangleRect.GetMidX(), (float)rectangleRect.GetMaxY()),
0);
context.RestoreState();
}
private void StartResizedImageRequest()
{
var sizeParamIndex = Url.IndexOf(MvxPlus.SizeParam, StringComparison.OrdinalIgnoreCase);
var originalUrl = Url.Substring(0, sizeParamIndex);
var sizeParamEndIndex = sizeParamIndex + MvxPlus.SizeParam.Length;
var sizeParam = Url.Substring(sizeParamEndIndex, Url.Length - sizeParamEndIndex);
var parameters = sizeParam.Split('>');
var size = new CGSize(float.Parse(parameters[0]), float.Parse(parameters[1]));
var useClipMask = GetParamValue(parameters, MvxPlus.ClipParam) == "true";
var useGradient = GetParamValue(parameters, MvxPlus.GradientParam) == "true";
var imageCache = MvxPlus.SafeGetImageCache();
imageCache.RequestImage(
originalUrl,
image =>
RunAsyncWithLock(() =>
{
var scaledSize = ResizeToFit(image.Size, size);
UIGraphics.BeginImageContextWithOptions(size, !useClipMask, 1);
// oval clip
if (useClipMask)
{
var path = UIBezierPath.FromOval(new CGRect(CGPoint.Empty, size));
path.AddClip();
}
image.Draw(new CGRect(
new CGPoint(
-((scaledSize.Width - size.Width) / 2),
-((scaledSize.Height - size.Height) / 2)),
scaledSize));
// gradient
if (useGradient)
{
var colorspace = CGColorSpace.CreateDeviceRGB();
var gradient = new CGGradient(colorspace,
new [] {
ThemeColors.ContentDarkBackground.ColorWithAlpha(0.2f).CGColor,
ThemeColors.ContentDarkBackground.ColorWithAlpha(0.8f).CGColor
},
new nfloat[] { 0f, 1f });
UIGraphics.GetCurrentContext().DrawLinearGradient(gradient,
CGPoint.Empty, new CGPoint(0, size.Height), CGGradientDrawingOptions.None);
}
var resizedImage = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
var stream = resizedImage.AsJPEG(0.86f).AsStream();
HandleSuccess(stream);
}),
FireDownloadFailed);
}
public static UIImage BuildCoverFlow(UIImage image, float reflectionFraction)
{
int reflectionHeight = (int)(image.Size.Height * reflectionFraction);
// gradient is always black and white and the mask must be in the gray colorspace
var colorSpace = CGColorSpace.CreateDeviceGray();
// Create the bitmap context
var gradientBitmapContext = new CGBitmapContext(IntPtr.Zero, 1, reflectionHeight, 8, 0, colorSpace, CGImageAlphaInfo.None);
// define the start and end grayscale values (with the alpha, even though
// our bitmap context doesn't support alpha the gradien requires it)
float [] colors = { 0, 1, 1, 1 };
// Create the CGGradient and then release the gray color space
var grayScaleGradient = new CGGradient(colorSpace, colors, null);
colorSpace.Dispose();
// create the start and end points for the gradient vector (straight down)
var gradientStartPoint = new PointF(0, reflectionHeight);
var gradientEndPoint = PointF.Empty;
// draw the gradient into the gray bitmap context
gradientBitmapContext.DrawLinearGradient(grayScaleGradient, gradientStartPoint, gradientEndPoint, CGGradientDrawingOptions.DrawsAfterEndLocation);
grayScaleGradient.Dispose();
// Add a black fill with 50% opactiy
gradientBitmapContext.SetFillColor(0, 0.5f);
gradientBitmapContext.FillRect(new RectangleF(0, 0, 1, reflectionHeight));
// conver the context into a CGImage and release the context
var gradientImageMask = gradientBitmapContext.ToImage();
gradientBitmapContext.Dispose();
// create an image by masking the bitmap of the mainView content with the gradient view
// then release the pre-masked content bitmap and the gradient bitmap
var cgImage = image.CGImage;
var reflectionImage = cgImage.WithMask(gradientImageMask);
cgImage.Dispose();
gradientImageMask.Dispose();
var size = new SizeF(image.Size.Width, image.Size.Height + reflectionHeight);
UIGraphics.BeginImageContext(size);
image.Draw(PointF.Empty);
var context = UIGraphics.GetCurrentContext();
context.DrawImage(new RectangleF(0, image.Size.Height, image.Size.Width, reflectionHeight), reflectionImage);
var result = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
reflectionImage.Dispose();
return(result);
}
void FillPathWithGradient()
{
var gr = new CGGradient(CGColorSpace.CreateDeviceRGB(), _g.Colors.Select(c => c.GetCGColor()).ToArray(), _g.Locations.Select(g => (NativeValue)g).ToArray());
_c.SaveState();
_c.Clip();
_c.DrawLinearGradient(gr, _g.Start.ToPointF(), _g.End.ToPointF(), CGGradientDrawingOptions.DrawsAfterEndLocation | CGGradientDrawingOptions.DrawsBeforeStartLocation);
_c.RestoreState();
}
public GradientTheme()
{
//BackgroundColor = UIColor.Clear;
TextColor = UIColor.Black;
TextShadowColor = UIColor.LightGray;
TextShadowOffset = new SizeF(1, 0);
gradient = new CGGradient(CGColorSpace.CreateDeviceRGB(), new float[] { 0.95f, 0.95f, 0.95f, 1, 0.85f, 0.85f, 0.85f, 1 }, new float[] { 0, 1 });
}
private void SetUp()
{
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB ();
gradient = new CGGradient (
colorSpace,
new float[] { 0.95f, 0.95f, 0.95f, 1,
0.85f, 0.85f, 0.85f, 1},
new float[] { 0, 1 });
}
public static UIImage AddImageReflection(UIImage image, float reflectionFraction)
{
int reflectionHeight = (int) (image.Size.Height * reflectionFraction);
// Create a 2 bit CGImage containing a gradient that will be used for masking the
// main view content to create the 'fade' of the reflection. The CGImageCreateWithMask
// function will stretch the bitmap image as required, so we can create a 1 pixel wide gradient
// gradient is always black and white and the mask must be in the gray colorspace
var colorSpace = CGColorSpace.CreateDeviceGray ();
// Creat the bitmap context
var gradientBitmapContext = new CGBitmapContext (IntPtr.Zero, 1, reflectionHeight, 8, 0, colorSpace, CGImageAlphaInfo.None);
// define the start and end grayscale values (with the alpha, even though
// our bitmap context doesn't support alpha the gradien requires it)
float [] colors = { 0, 1, 1, 1 };
// Create the CGGradient and then release the gray color space
var grayScaleGradient = new CGGradient (colorSpace, colors, null);
colorSpace.Dispose ();
// create the start and end points for the gradient vector (straight down)
var gradientStartPoint = new PointF (0, reflectionHeight);
var gradientEndPoint = PointF.Empty;
// draw the gradient into the gray bitmap context
gradientBitmapContext.DrawLinearGradient (grayScaleGradient, gradientStartPoint,
gradientEndPoint, CGGradientDrawingOptions.DrawsAfterEndLocation);
grayScaleGradient.Dispose ();
// Add a black fill with 50% opactiy
gradientBitmapContext.SetGrayFillColor (0, 0.5f);
gradientBitmapContext.FillRect (new RectangleF (0, 0, 1, reflectionHeight));
// conver the context into a CGImage and release the context
var gradientImageMask = gradientBitmapContext.ToImage ();
gradientBitmapContext.Dispose ();
// create an image by masking the bitmap of the mainView content with the gradient view
// then release the pre-masked content bitmap and the gradient bitmap
var reflectionImage = image.CGImage.WithMask (gradientImageMask);
gradientImageMask.Dispose ();
var size = new SizeF (image.Size.Width, image.Size.Height + reflectionHeight);
UIGraphics.BeginImageContext (size);
image.Draw (PointF.Empty);
var context = UIGraphics.GetCurrentContext ();
context.DrawImage (new RectangleF (0, image.Size.Height, image.Size.Width, reflectionHeight), reflectionImage);
var result = UIGraphics.GetImageFromCurrentImageContext ();
UIGraphics.EndImageContext ();
reflectionImage.Dispose ();
return result;
}
public GradientTheme()
{
//BackgroundColor = UIColor.Clear;
TextColor = UIColor.Black;
TextShadowColor = UIColor.LightGray;
TextShadowOffset = new SizeF(1, 0);
gradient = new CGGradient(CGColorSpace.CreateDeviceRGB(), new float[] { 0.95f, 0.95f, 0.95f, 1, 0.85f, 0.85f, 0.85f, 1 }, new float[] { 0, 1 });
}
static MessageSummaryView()
{
using (var colorspace = CGColorSpace.CreateDeviceRGB())
{
Gradient = new CGGradient(colorspace,
new[] { /* first */ .52f, .69f, .96f, 1, /* second */ .12f, .31f, .67f, 1 },
null); //new float [] { 0, 1 });
}
}
public override void DrawInContext(CoreGraphics.CGContext ctx)
{
base.DrawInContext(ctx);
var knobFrame = CGRect.Inflate(PaintFrame, -2.0f, -2.0f);
UIBezierPath knobPath = UIBezierPath.FromRoundedRect((CGRect)knobFrame, (nfloat)knobFrame.Height * Slider.Curvaceousness / 2.0f);
// 1) fill - with a subtle shadow
ctx.SetShadow(new CGSize(0, 1), 1.0f, UIColor.Gray.CGColor);
ctx.SetFillColor(Slider.KnobColor.CGColor);
ctx.AddPath(knobPath.CGPath);
ctx.FillPath();
// 2) outline
ctx.SetStrokeColor(UIColor.Gray.CGColor);
ctx.SetLineWidth((nfloat)0.5f);
ctx.AddPath(knobPath.CGPath);
ctx.StrokePath();
// 3) inner gradient
var rect = CGRect.Inflate(knobFrame, -2.0f, -2.0f);
var clipPath = UIBezierPath.FromRoundedRect((CGRect)rect, (nfloat)rect.Height * Slider.Curvaceousness / 2.0f);
CGGradient myGradient;
CGColorSpace myColorspace;
nfloat[] locations = { 0.0f, 1.0f };
nfloat[] components = { 0.0f, 0.0f, 0.0f, 0.15f, // Start color
0.0f, 0.0f, 0.0f, 0.05f }; // End color
myColorspace = CGColorSpace.CreateDeviceRGB(); // CGColorSpaceCreateDeviceRGB();
myGradient = new CGGradient(myColorspace, components, locations);
CGPoint startPoint = new CGPoint((float)rect.GetMidX(), (float)rect.GetMinY());
CGPoint endPoint = new CGPoint((float)rect.GetMidX(), (float)rect.GetMaxY());
ctx.SaveState();
ctx.AddPath(clipPath.CGPath);
ctx.Clip();
ctx.DrawLinearGradient((CGGradient)myGradient, (CGPoint)startPoint, (CGPoint)endPoint, (CGGradientDrawingOptions)0);
myGradient.Dispose();
myColorspace.Dispose();
ctx.RestoreState();
// 4) highlight
if (Highlighted)
{
// fill
ctx.SetFillColor(UIColor.FromWhiteAlpha((nfloat)0.0f, (nfloat)0.1f).CGColor);
ctx.AddPath(knobPath.CGPath);
ctx.FillPath();
}
}
public void Draw(GraphicsHandler graphics, bool stroke, FillMode fillMode, bool clip)
{
var outerRadius = Radius.Width;
var yscale = Radius.Height / Radius.Width;
var center = Center;
var origin = GradientOrigin;
var scale = 1f;
var rect = graphics.Control.GetPathBoundingBox().ToEto();
if (stroke)
{
graphics.Control.ReplacePathWithStrokedPath();
}
if (clip)
{
graphics.Clip(fillMode);
}
if (wrap != GradientWrapMode.Pad)
{
// use eto's transformrectangle as it'll make the rect encompass the resulting transformed area
var boundRect = transform.Invert().ToEto().TransformRectangle(rect);
// find max number of iterations we need to fill the bounding rectangle
scale = GradientHelper.GetRadialScale(Center, Radius, GradientOrigin, boundRect);
}
if (Gradient == null || scale > lastScale)
{
var stops = GradientHelper.GetGradientStops(StartColor.ToCG(), EndColor.ToCG(), scale, wrap).ToList();
lastScale = scale;
Gradient = new CGGradient(CGColorSpace.CreateDeviceRGB(), stops.Select(r => r.Item2).ToArray(), stops.Select(r => (nfloat)r.Item1).ToArray());
}
else
{
scale = lastScale;
}
var scaledRect = new RectangleF(GradientOrigin - (GradientOrigin - Center + Radius) * scale, GradientOrigin + (Center + Radius - GradientOrigin) * scale);
center = scaledRect.Center;
outerRadius *= scale;
// adjust center based on ellipse scale from gradient origin
center.Y = origin.Y - (origin.Y - center.Y) / yscale;
// scale to draw elliptical gradient
var t = new CGAffineTransform(1, 0f, 0f, yscale, 0, origin.Y - origin.Y * yscale);
t.Multiply(transform);
graphics.Control.SaveState();
graphics.Control.ConcatCTM(t);
graphics.Control.DrawRadialGradient(Gradient, origin.ToNS(), 0, center.ToNS(), outerRadius, CGGradientDrawingOptions.DrawsAfterEndLocation | CGGradientDrawingOptions.DrawsBeforeStartLocation);
graphics.Control.RestoreState();
}
static HeaderView()
{
using (var rgb = CGColorSpace.CreateDeviceRGB()){
float [] colorsBottom = {
1, 1, 1, 1f,
0.97f, 0.97f, 0.97f, 1f
};
Gradient = new CGGradient (rgb, colorsBottom, null);
}
}
public MovieElement(string caption) : base(UITableViewCellStyle.Default)
{
Caption = caption;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
gradient = new CGGradient(
colorSpace,
new float[] { 0.95f, 0.95f, 0.95f, 1,
0.85f, 0.85f, 0.85f, 1},
new float[] { 0, 1 } );
}
public override void DrawInContext(CoreGraphics.CGContext ctx)
{
base.DrawInContext (ctx);
var knobFrame = CGRect.Inflate(PaintFrame, -2.0f, -2.0f);
UIBezierPath knobPath = UIBezierPath.FromRoundedRect((CGRect)knobFrame, (nfloat)knobFrame.Height * Slider.Curvaceousness / 2.0f);
// 1) fill - with a subtle shadow
ctx.SetShadow(new CGSize(0, 1), 1.0f, UIColor.Gray.CGColor);
ctx.SetFillColor( Slider.KnobColor.CGColor);
ctx.AddPath( knobPath.CGPath);
ctx.FillPath ();
// 2) outline
ctx.SetStrokeColor(UIColor.Gray.CGColor);
ctx.SetLineWidth((nfloat)0.5f);
ctx.AddPath(knobPath.CGPath);
ctx.StrokePath ();
// 3) inner gradient
var rect = CGRect.Inflate(knobFrame, -2.0f, -2.0f);
var clipPath = UIBezierPath.FromRoundedRect ((CGRect)rect, (nfloat)rect.Height * Slider.Curvaceousness / 2.0f);
CGGradient myGradient;
CGColorSpace myColorspace;
nfloat[] locations = { 0.0f, 1.0f };
nfloat[] components = { 0.0f, 0.0f, 0.0f , 0.15f, // Start color
0.0f, 0.0f, 0.0f, 0.05f }; // End color
myColorspace = CGColorSpace.CreateDeviceRGB (); // CGColorSpaceCreateDeviceRGB();
myGradient = new CGGradient( myColorspace, components, locations);
CGPoint startPoint = new CGPoint((float)rect.GetMidX(), (float)rect.GetMinY());
CGPoint endPoint = new CGPoint((float)rect.GetMidX(), (float)rect.GetMaxY());
ctx.SaveState ();
ctx.AddPath( clipPath.CGPath);
ctx.Clip ();
ctx.DrawLinearGradient( (CGGradient)myGradient, (CGPoint)startPoint, (CGPoint)endPoint, (CGGradientDrawingOptions)0);
myGradient.Dispose ();
myColorspace.Dispose();
ctx.RestoreState();
// 4) highlight
if (Highlighted)
{
// fill
ctx.SetFillColor(UIColor.FromWhiteAlpha((nfloat)0.0f, (nfloat)0.1f).CGColor);
ctx.AddPath( knobPath.CGPath);
ctx.FillPath();
}
}
public GradientDrawingView () : base ()
{
using (var rgb = CGColorSpace.CreateDeviceRGB ()) {
nfloat[] colors = {
204f / 255f, 224f / 255f, 244f / 255f, 10f,
29f / 255f, 156f / 255f, 215f / 255f, 10f,
0f / 255f, 50f / 255f, 126f / 255f, 10f,
};
gradient = new CGGradient (rgb, colors, null);
}
}
public GradientTheme()
{
//BackgroundColor = UIColor.Clear;
TextColor = UIColor.Black;
TextShadowColor = UIColor.LightGray;
TextShadowOffset = new SizeF(1, 0);
gradient = new CGGradient(CGColorSpace.CreateDeviceRGB(), new float[] { 0.95f, 0.95f, 0.95f, 1, 0.85f, 0.85f, 0.85f, 1 }, new float[] { 0, 1 });
DrawElementViewAction = (rect, context, cell) => { DrawElementView(rect, context, cell); };
}
public void DrawContentView(RectangleF rect, CGContext context, UITableViewElementCell cell)
{
context.SaveState();
float r = 0;
float g = 0;
float b = 0;
var gradient = new CGGradient(CGColorSpace.CreateDeviceRGB(), new float[] { r, g, b, 0.20f, r, g, b, 0.40f }, new float[] { 0, 1 });
context.DrawLinearGradient(gradient, new PointF(rect.Left, rect.Top), new PointF(rect.Left, rect.Bottom), CGGradientDrawingOptions.DrawsBeforeStartLocation);
context.RestoreState();
}
public SampleOwnerDrawnElement (string text, DateTime sent, string from) : base(UITableViewCellStyle.Default, "sampleOwnerDrawnElement")
{
this.Subject = text;
this.From = from;
this.Sent = FormatDate(sent);
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
gradient = new CGGradient(
colorSpace,
new float[] { 0.95f, 0.95f, 0.95f, 1,
0.85f, 0.85f, 0.85f, 1},
new float[] { 0, 1 } );
}
public override void Draw (RectangleF rect)
{
base.Draw (rect);
// get graphics context
CGContext gctx = UIGraphics.GetCurrentContext ();
// set up drawing attributes
gctx.SetLineWidth (4);
UIColor.Yellow.SetStroke ();
// stroke with a dashed line
gctx.SetLineDash (3, new float[] {6,2});
// create geometry
var path = new CGPath ();
PointF origin = new PointF (Bounds.GetMidX (),
Bounds.GetMinY () + 10);
path.AddLines (new PointF[] {
origin,
new PointF (origin.X + 35, origin.Y + 80),
new PointF (origin.X - 50, origin.Y + 30),
new PointF (origin.X + 50, origin.Y + 30),
new PointF (origin.X - 35, origin.Y + 80) });
path.CloseSubpath ();
// add geometry to graphics context and draw it
gctx.AddPath (path);
gctx.DrawPath (CGPathDrawingMode.Stroke);
// fill the star with a gradient
gctx.AddPath (path);
gctx.Clip ();
RectangleF starBoundingBox = path.BoundingBox;
float[] locations = { 0.0f, 1.0f };
float[] components = { 1.0f, 0.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f, 1.0f };
using (var rgb = CGColorSpace.CreateDeviceRGB()) {
CGGradient gradient = new CGGradient (rgb, components, locations);
PointF gradientStart = new PointF (starBoundingBox.Left, starBoundingBox.Top);
PointF gradientEnd = new PointF (starBoundingBox.Right, starBoundingBox.Bottom);
gctx.DrawLinearGradient (gradient, gradientStart, gradientEnd, CGGradientDrawingOptions.DrawsBeforeStartLocation);
}
}
public override void Draw (CGRect rect)
{
base.Draw (rect);
//get graphics context
using (CGContext g = UIGraphics.GetCurrentContext ()) {
//set up drawing attributes
g.SetLineWidth (10);
UIColor.Blue.SetFill ();
UIColor.Red.SetStroke ();
//create geometry
var path = new CGPath ();
path.AddLines (new CGPoint[]{
new CGPoint (100, 200),
new CGPoint (160, 100),
new CGPoint (220, 200)});
path.CloseSubpath ();
//use a dashed line
g.SetLineDash (0, new nfloat[]{10, 4});
//add geometry to graphics context and draw it
g.AddPath (path);
g.DrawPath (CGPathDrawingMode.FillStroke);
// add the path back to the graphics context so that it is the current path
g.AddPath (path);
// set the current path to be the clipping path
g.Clip ();
// the color space determines how Core Graphics interprets color information
using (CGColorSpace rgb = CGColorSpace.CreateDeviceRGB()) {
CGGradient gradient = new CGGradient (rgb, new CGColor[] {
UIColor.Blue.CGColor,
UIColor.Yellow.CGColor
});
// draw a linear gradient
g.DrawLinearGradient (
gradient,
new CGPoint (path.BoundingBox.Left, path.BoundingBox.Top),
new CGPoint (path.BoundingBox.Right, path.BoundingBox.Bottom),
CGGradientDrawingOptions.DrawsBeforeStartLocation);
}
}
}
public StoryDetailElement(AgileZenStory story)
: base(UITableViewCellStyle.Default, "sampleOwnerDrawnElement")
{
this.Text = story.Text;
this.Status = story.Status;
this.User = story.Owner.Name;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
gradient = new CGGradient(
colorSpace,
new float[] { 0.95f, 0.95f, 0.95f, 1,
0.85f, 0.85f, 0.85f, 1},
new float[] { 0, 1 } );
}
public ProjectElement(AgileZenProject project)
: base(UITableViewCellStyle.Default, "sampleOwnerDrawnElement")
{
this.Description = project.Description;
this.Text = project.Name;
this.CreatedTime = project.CreateTime;
this.Id = project.Id;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
gradient = new CGGradient(
colorSpace,
new float[] { 0.95f, 0.95f, 0.95f, 1,
0.85f, 0.85f, 0.85f, 1},
new float[] { 0, 1 } );
}
static TableViewSectionView ()
{
using (var rgb = CGColorSpace.CreateDeviceRGB()){
var colorsBottom = new nfloat[] {
1, 1, 1, 0f,
0.4f, 0.4f, 0.4f, .6f
};
BottomGradient = new CoreGraphics.CGGradient (rgb, colorsBottom, null);
var colorsTop = new nfloat[] {
0.8f, 0.8f, 0.8f, .4f,
1, 1, 1, 0f
};
TopGradient = new CoreGraphics.CGGradient (rgb, colorsTop, null);
}
}
static CellBackgroundView()
{
using (var rgb = CGColorSpace.CreateDeviceRGB()){
float [] colorsBottom = {
1, 1, 1, .5f,
0.91f, 0.91f, 0.91f, .5f
};
BottomGradient = new CGGradient (rgb, colorsBottom, null);
float [] colorsTop = {
0.94f, 0.94f, 0.94f, .5f,
1, 1, 1, 0.5f
};
TopGradient = new CGGradient (rgb, colorsTop, null);
}
}
public override void Draw(CGRect rect)
{
if (SplitViewController.DividerStyle == MGSplitViewDividerStyle.Thin) {
base.Draw(rect);
} else if (SplitViewController.DividerStyle == MGSplitViewDividerStyle.PaneSplitter) {
// Draw gradient background.
CGRect bounds = Bounds;
CGColorSpace rgb = CGColorSpace.CreateDeviceRGB();
nfloat[] locations = {0, 1};
nfloat[] components = { 0.988f, 0.988f, 0.988f, 1.0f, // light
0.875f, 0.875f, 0.875f, 1.0f };// dark
CGGradient gradient = new CGGradient(rgb, components, locations);
CGContext context = UIGraphics.GetCurrentContext();
CGPoint start, end;
if (SplitViewController.Vertical) {
// Light left to dark right.
start = new CGPoint(bounds.GetMinX(), bounds.GetMidY());
end = new CGPoint(bounds.GetMaxX(), bounds.GetMidY());
} else {
// Light top to dark bottom.
start = new CGPoint(bounds.GetMidX(), bounds.GetMinY());
end = new CGPoint(bounds.GetMidX(), bounds.GetMaxY());
}
context.DrawLinearGradient(gradient, start, end, CGGradientDrawingOptions.DrawsBeforeStartLocation);
// Draw borders.
float borderThickness = 10;
UIColor.FromWhiteAlpha(0.7f, 1).SetColor();
CGRect borderRect = bounds;
if (SplitViewController.Vertical) {
borderRect.Width = borderThickness;
context.FillRect(borderRect);
borderRect.X = bounds.GetMaxX() - borderThickness;
context.FillRect(borderRect);
} else {
borderRect.Height = borderThickness;
context.FillRect(borderRect);
borderRect.Y = bounds.GetMaxY() - borderThickness;
context.FillRect(borderRect);
}
// Draw grip.
DrawGripThumbInRect(bounds);
}
}
public static UIImage makeGradientProgressImage(int width, int height, float progress, float[] components, float[] locations)
{
//Create a CGBitmapContext object
CGBitmapContext ctx = new CGBitmapContext(IntPtr.Zero, width, height, 8, 4 * width, CGColorSpace.CreateDeviceRGB(), CGImageAlphaInfo.PremultipliedFirst);
//Calculate the width of the rectangle based on the progress
float percentWidth = width * progress;
//Create a gradient object
CGGradient gradient = new CGGradient(CGColorSpace.CreateDeviceRGB(), components, locations);
//Draw a linear gradient to represent the progress bar
ctx.DrawLinearGradient(gradient, new PointF(0, 0), new PointF(percentWidth, 0), CGGradientDrawingOptions.DrawsBeforeStartLocation);
//return a UIImage object
return UIImage.FromImage(ctx.ToImage());
}
public override void DrawInContext (CoreGraphics.CGContext ctx)
{
CGRect rect = this.BoundsRect();
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB ();
nfloat [] colors = new nfloat[] {
0.42f, 0.66f, 0.31f, 1.0f,
0.95f, 0.76f, 0.20f, 1.0f,
0.80f, 0.25f, 0.15f, 1.0f
};
CGGradient gradient = new CGGradient (colorSpace, colors, null);
nuint tickSpaces = this.Axis.MajorTickCount - 1;
nuint pointsCount = 5;
if (this.Chart.Frame.Size.Height < this.Chart.Frame.Size.Width) {
pointsCount = 3;
}
nfloat diameter = 8;
nfloat spaceHeight = rect.Size.Height / tickSpaces;
nfloat spacing = (spaceHeight - (pointsCount * diameter)) / (pointsCount + 1);
nuint allPointsCount = pointsCount * tickSpaces;
CGPath multipleCirclePath = new CGPath ();
double y = rect.GetMinY() + diameter / 2.0f + spacing;
for (uint i = 1; i <= allPointsCount; i++) {
CGPoint center = new CGPoint (rect.GetMidX (), y);
CGPath path = new CGPath ();
path.AddArc (center.X, center.Y, (nfloat)diameter/2.0f, 0, (nfloat)Math.PI * 2, true);
multipleCirclePath.AddPath (path);
y += spacing + diameter;
if (i % pointsCount == 0) {
y += spacing;
}
}
ctx.SaveState ();
ctx.AddPath (multipleCirclePath);
ctx.Clip ();
CGPoint startPoint = new CGPoint (rect.GetMidX (), rect.GetMinY ());
CGPoint endPoint = new CGPoint (rect.GetMidX (), rect.GetMaxY());
ctx.DrawLinearGradient (gradient, startPoint, endPoint, 0);
ctx.RestoreState ();
base.DrawInContext (ctx);
}
public override void Draw(CGRect rect)
{
base.Draw(rect);
var context = UIGraphics.GetCurrentContext();
//context.BeginPath();
//context.ClipToRect(new RectangleF(63f, 0f, 3f, rect.Height));
using (var cs = CGColorSpace.CreateDeviceRGB ())
{
using (var gradient = new CGGradient (cs, new nfloat[] { 1f, 1f, 1f, 1.0f,
0.7f, 0.7f, 0.7f, 1f,
1f, 1f, 1.0f, 1.0f }, new nfloat[] {0, 0.5f, 1f}))
{
context.DrawLinearGradient(gradient, new CGPoint(0, 0), new CGPoint(0, rect.Height), 0);
}
}
}
public override void DrawInContext(CGContext ctx)
{
base.DrawInContext(ctx);
var colorSpace = CGColorSpace.CreateDeviceRGB();
if (colorSpace == null)
{
throw new InvalidOperationException();
}
var gradient = new CGGradient(colorSpace,
new nfloat[] { 1f, 1f, 1f, 1f, 0.86f, 0.86f, 0.86f, 1f },
new nfloat[] { 0.2f, 0.95f });
var center = new CGPoint(this.Bounds.Width / 2, this.Bounds.Height / 2);
var radius = new nfloat(Math.Min(this.Bounds.Width, this.Bounds.Height));
ctx.DrawRadialGradient(gradient, center, 0, center, radius, CGGradientDrawingOptions.DrawsAfterEndLocation);
}
public override void Draw(CGRect rect)
{
base.Draw(rect);
var context = UIGraphics.GetCurrentContext();
var colorSpace = CGColorSpace.CreateDeviceRGB();
nfloat[] locations = { 0, 1 };
CGColor[] colors =
{
UIColor.FromRGB(0x8D, 0xCF, 0x16).CGColor,
UIColor.FromRGB(0x65, 0xBD, 0x10).CGColor,
};
var gradiend = new CGGradient(colorSpace, colors, locations);
context.DrawLinearGradient(gradiend, new CGPoint(0, 0), new CGPoint(0, rect.Size.Height), CGGradientDrawingOptions.DrawsBeforeStartLocation);
gradiend.Dispose();
colorSpace.Dispose();
}
private UIImage GenerateBackgroundImage()
{
UIGraphics.BeginImageContextWithOptions(this.Bounds.Size, true, 1);
// The location of the colors is at the start and end
float[] locations = new float[] { 0.0f, 1.0f };
// These are the colors defined as RBGA values
float[] components = new float[]
{
0.18f, 0.53f, 0.78f, 1f,
0.11f, 0.34f, 0.5f, 1f
};
var colorSpace = CGColorSpace.CreateDeviceRGB();
CGGradient gradient = new CGGradient(colorSpace, components, locations);
UIGraphics.GetCurrentContext().DrawRadialGradient(gradient, Center, 0, Center, Bounds.Size.Width, CGGradientDrawingOptions.DrawsAfterEndLocation);
return UIGraphics.GetImageFromCurrentImageContext();
}
public override void Draw(CGRect rect)
{
// Load image
UIImage image = new UIImage("logo.png");
// Get drawing context
CGContext ctx = UIGraphics.GetCurrentContext();
// get view bounds
CGRect bounds = this.Bounds;
// Find the center of view
CGPoint center = new CGPoint();
center.X = bounds.X + bounds.Width / 2;
center.Y = bounds.Y + bounds.Height / 2;
// Compute the max radius of the circle
float maxRadius = (float)Math.Sqrt(Math.Pow(bounds.Size.Width,2) + Math.Pow(bounds.Size.Height,2)) / 3.0f;
ctx.SaveState();
// draw outline circle with 1 pt black shadow
ctx.AddArc(center.X, center.Y, maxRadius, 0, (float)(Math.PI * 2), true);
CGSize offset = new CGSize(0, 1);
CGColor shadowColor = UIColor.Black.CGColor;
ctx.SetShadow(offset, 2, shadowColor);
ctx.DrawPath(CGPathDrawingMode.Stroke);
// clear shadow
ctx.RestoreState();
// set clipping circle
ctx.AddArc(center.X, center.Y, maxRadius, 0, (float)(Math.PI * 2), true);
ctx.Clip();
// Draw the image in the circle
image.Draw(bounds);
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
nfloat[] components = new nfloat[8]{0.8f, 0.8f, 1, 1, 0.8f, 0.8f, 1, 0};
nfloat[] locations = new nfloat[2]{0.0f, 1};
CGGradient gradient = new CGGradient(colorSpace, components, locations);
ctx.DrawLinearGradient(gradient, new CGPoint(bounds.Width / 2, 0), new CGPoint(bounds.Width / 2, bounds.Height / 2), 0);
}
public void DrawElementView(RectangleF rect, CGContext context, UITableViewElementCell cell)
{
var gradientFrame = rect;
var shineFrame = gradientFrame;
shineFrame.Y += 1;
shineFrame.X += 1;
shineFrame.Width -= 2;
shineFrame.Height = (shineFrame.Height / 2);
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
var gradient = new CGGradient(
colorSpace,
new float[] { 0f, 0f,0f, 0.70f,
0f, 0f, 0f, 0.40f},
new float[] { 0, 1 } );
var shineGradient = new CGGradient(
colorSpace,
new float[] { 1f, 1f, 1f, 0.80f,
1f, 1f, 1f, 0.10f},
new float[] { 0, 1 } );
if (Cell != null && Cell.Highlighted)
{
context.SetFillColorWithColor(HighlightColor.CGColor);
}
else
{
context.SetFillColorWithColor(CellBackgroundColor.CGColor);
}
context.FillRect(rect);
context.DrawLinearGradient(gradient, new PointF(gradientFrame.Left, gradientFrame.Top), new PointF(gradientFrame.Left, gradientFrame.Bottom), CGGradientDrawingOptions.DrawsAfterEndLocation);
context.DrawLinearGradient(shineGradient, new PointF(shineFrame.Left, shineFrame.Top), new PointF(shineFrame.Left, shineFrame.Bottom), CGGradientDrawingOptions.DrawsAfterEndLocation);
}
