本文整理汇总了C#中CGContext.SetShadow方法的典型用法代码示例。如果您正苦于以下问题：C# CGContext.SetShadow方法的具体用法？C# CGContext.SetShadow怎么用？C# CGContext.SetShadow使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CGContext的用法示例。
在下文中一共展示了CGContext.SetShadow方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: DrawInContext
public override void DrawInContext(CGContext ctx)
{
base.DrawInContext (ctx);
// clip
var cornerRadius = Bounds.Height / 2.0f;
UIBezierPath switchOutline = UIBezierPath.FromRoundedRect( (CGRect)Bounds, (nfloat)cornerRadius);
ctx.AddPath (switchOutline.CGPath);
ctx.Clip ();
// 1) fill the track
ctx.SetFillColor (UIColor.Green.CGColor);
ctx.AddPath(switchOutline.CGPath);
ctx.FillPath ();
// 2) fill the highlighed range //Skipped for demo
// 3) add a highlight over the track
CGRect highlight = new CGRect(cornerRadius/2, Bounds.Height/2,
Bounds.Width - cornerRadius, Bounds.Height/2);
UIBezierPath highlightPath = UIBezierPath.FromRoundedRect ((CGRect)highlight, (nfloat)highlight.Height / 2.0f);
ctx.AddPath(highlightPath.CGPath);
ctx.SetFillColor( UIColor.FromWhiteAlpha((nfloat)1.0f, (nfloat)0.4f).CGColor);
ctx.FillPath ();
// 4) inner shadow
ctx.SetShadow( new CGSize(0f, 2.0f), 3.0f, UIColor.Gray.CGColor);
ctx.AddPath (switchOutline.CGPath);
ctx.SetStrokeColor(UIColor.Gray.CGColor);
ctx.StrokePath ();
// 5) outline the track
ctx.AddPath( switchOutline.CGPath);
ctx.SetStrokeColor(UIColor.Black.CGColor);
ctx.SetLineWidth ((nfloat)0.5f);
ctx.StrokePath ();
//
// ctx.SetFillColor (UIColor.Blue.CGColor);
// ctx.FillRect (Bounds);
}示例2: DrawInContext
public override void DrawInContext(CGContext ctx)
{
base.DrawInContext (ctx);
// clip
var cornerRadius = Bounds.Height * Slider.Curvaceousness / 2.0f;
UIBezierPath switchOutline = UIBezierPath.FromRoundedRect( (CGRect)Bounds, (nfloat)cornerRadius);
ctx.AddPath (switchOutline.CGPath);
ctx.Clip ();
// 1) fill the track
ctx.SetFillColor (Slider.TrackColor.CGColor);
ctx.AddPath(switchOutline.CGPath);
ctx.FillPath ();
// 2) fill the highlighed range
ctx.SetFillColor(Slider.TrackHighlightColor.CGColor);
var lower = Slider.positionForValue (Slider.LowValue);
var higher = Slider.positionForValue(Slider.HighValue);
ctx.FillRect((CGRect)new CGRect(lower, 0, higher - lower, Bounds.Height));
// 3) add a highlight over the track
CGRect highlight = new CGRect(cornerRadius/2, Bounds.Height/2,
Bounds.Width - cornerRadius, Bounds.Height/2);
UIBezierPath highlightPath = UIBezierPath.FromRoundedRect ((CGRect)highlight, (nfloat)highlight.Height * Slider.Curvaceousness / 2.0f);
ctx.AddPath(highlightPath.CGPath);
ctx.SetFillColor( UIColor.FromWhiteAlpha((nfloat)1.0f, (nfloat)0.4f).CGColor);
ctx.FillPath ();
// 4) inner shadow
ctx.SetShadow( new CGSize(0f, 2.0f), 3.0f, UIColor.Gray.CGColor);
ctx.AddPath (switchOutline.CGPath);
ctx.SetStrokeColor(UIColor.Gray.CGColor);
ctx.StrokePath ();
// 5) outline the track
ctx.AddPath( switchOutline.CGPath);
ctx.SetStrokeColor(UIColor.Black.CGColor);
ctx.SetLineWidth ((nfloat)0.5f);
ctx.StrokePath ();
}示例3: DrawFlag
protected void DrawFlag (CGContext context)
{
// declare vars
int i, j;
// general sizes
float flagWidth = imageView.Frame.Width * .8f;
float flagHeight = (float)(flagWidth / 1.9);
PointF flagOrigin = new PointF (imageView.Frame.Width * .1f, imageView.Frame.Height / 3);
// stripe
float stripeHeight = flagHeight / 13;
float stripeSpacing = stripeHeight * 2;
RectangleF stripeRect = new RectangleF (0, 0, flagWidth, stripeHeight);
// star field
float starFieldHeight = 7 * stripeHeight;
float starFieldWidth = flagWidth * (2f / 5f);
RectangleF starField = new RectangleF (flagOrigin.X, flagOrigin.Y + (6 * stripeHeight), starFieldWidth, starFieldHeight);
// stars
float starDiameter = flagHeight * 0.0616f;
float starHorizontalCenterSpacing = (starFieldWidth / 6);
float starHorizontalPadding = (starHorizontalCenterSpacing / 4);
float starVerticalCenterSpacing = (starFieldHeight / 5);
float starVerticalPadding = (starVerticalCenterSpacing / 4);
PointF firstStarOrigin = new PointF (flagOrigin.X + starHorizontalPadding, flagOrigin.Y + flagHeight - starVerticalPadding - (starVerticalCenterSpacing / 2));
PointF secondRowFirstStarOrigin = new PointF (firstStarOrigin.X + (starHorizontalCenterSpacing / 2), firstStarOrigin.Y - (starVerticalCenterSpacing / 2));
// white background + shadow
context.SaveState ();
context.SetShadow (new SizeF (15, -15), 7);
context.SetFillColor (1, 1, 1, 1);
context.FillRect (new RectangleF (flagOrigin.X, flagOrigin.Y, flagWidth, flagHeight));
context.RestoreState ();
// create a stripe layer
using (CGLayer stripeLayer = CGLayer.Create (context, stripeRect.Size)) {
// set red as the fill color
// this works
stripeLayer.Context.SetFillColor (1f, 0f, 0f, 1f);
// but this doesn't ????
//stripeLayer.Context.SetFillColor (new float[] { 1f, 0f, 0f, 1f });
// fill the stripe
stripeLayer.Context.FillRect (stripeRect);
// loop through the stripes and draw the layer
context.SaveState ();
for (i = 0; i < 7; i++) {
Console.WriteLine ("drawing stripe layer");
// draw the layer
context.DrawLayer (stripeLayer, flagOrigin);
// move the origin
context.TranslateCTM (0, stripeSpacing);
}
context.RestoreState ();
}
// draw the star field
//BUGBUG: apple bug - this only works on on-screen CGContext and CGLayer
//context.SetFillColor (new float[] { 0f, 0f, 0.329f, 1.0f });
context.SetFillColor (0f, 0f, 0.329f, 1.0f);
context.FillRect (starField);
// create the star layer
using (CGLayer starLayer = CGLayer.Create (context, starField.Size)) {
// draw the stars
DrawStar (starLayer.Context, starDiameter);
// 6-star rows
// save state so that as we translate (move the origin around,
// it goes back to normal when we restore)
context.SaveState ();
context.TranslateCTM (firstStarOrigin.X, firstStarOrigin.Y);
// loop through each row
for (j = 0; j < 5; j++) {
// each star in the row
for (i = 0; i < 6; i++) {
// draw the star, then move the origin to the right
context.DrawLayer (starLayer, new PointF (0f, 0f));
context.TranslateCTM (starHorizontalCenterSpacing, 0f);
}
// move the row down, and then back left
context.TranslateCTM ( (-i * starHorizontalCenterSpacing), -starVerticalCenterSpacing);
}
context.RestoreState ();
// 5-star rows
context.SaveState ();
context.TranslateCTM (secondRowFirstStarOrigin.X, secondRowFirstStarOrigin.Y);
// loop through each row
for (j = 0; j < 4; j++) {
// each star in the row
for (i = 0; i < 5; i++) {
//.........这里部分代码省略.........
示例4: DrawInContext
public override void DrawInContext (CGContext context)
{
base.DrawInContext (context);
// Console.WriteLine ("DrawInContext Radius: {0} Thickness: {1} Color: {2}", Radius, Thickness, Color);
//Console.WriteLine (this.Bounds.Width+" "+ this.Bounds.Height);
CGPoint centerPoint = new CGPoint (this.Bounds.Width / 2, this.Bounds.Height / 2);
CGColor glowColor = new UIColor (Color).ColorWithAlpha (0.85f).CGColor;
double innerRadius = (Radius - Thickness) > 0 ? Radius - Thickness : 0;
// Outer circle
context.AddEllipseInRect (new CGRect (centerPoint.X - (float) Radius,
centerPoint.Y - (float) Radius,
(float) Radius * 2,
(float) Radius * 2));
// Inner circle
context.AddEllipseInRect (new CGRect (centerPoint.X - (float) innerRadius,
centerPoint.Y - (float) innerRadius,
(float) innerRadius * 2,
(float) innerRadius * 2));
// Fill in circle
context.SetFillColor (Color);
context.SetShadow (CGSize.Empty, 10.0f, glowColor);
context.EOFillPath();
}示例5: drawLabel
void drawLabel (CGContext ctx, CGRect rect, nfloat yCoord, nfloat xCoord, UITextAlignment alignment, string label, bool flipContext = true, bool centerVertical = false)
{
// Draw light the sunrise and Sunset labels at the ends of the light box
using (UIColor fontColor = UIColor.White, shadowColor = UIColor.Black.ColorWithAlpha (0.1f)) {
var fontAttributes = new UIFontAttributes (new UIFontFeature (CTFontFeatureNumberSpacing.Selector.ProportionalNumbers));
using (var desc = UIFont.SystemFontOfSize (fontSize).FontDescriptor.CreateWithAttributes (fontAttributes)) {
using (UIFont font = UIFont.FromDescriptor (desc, fontSize)) {
// calculating the range of our attributed string
var range = new NSRange (0, label.Length);
// set justification for text block
using (var alignStyle = new NSMutableParagraphStyle { Alignment = alignment }) {
// add stylistic attributes to out attributed string
var stringAttributes = new UIStringAttributes {
ForegroundColor = fontColor,
Font = font,
ParagraphStyle = alignStyle
};
var target = new CGSize (float.MaxValue, float.MaxValue);
NSRange fit;
using (NSMutableAttributedString attrString = new NSMutableAttributedString (label, stringAttributes)) {
//creating a container for out attributed string
using (CTFramesetter framesetter = new CTFramesetter (attrString)) {
CGSize frameSize = framesetter.SuggestFrameSize (range, null, target, out fit);
if (alignment == UITextAlignment.Center) xCoord -= (frameSize.Width / 2);
if (alignment == UITextAlignment.Right) xCoord -= frameSize.Width;
// subtract the frameSize so the flipped context behaves as expected
yCoord -= frameSize.Height;
if (centerVertical) yCoord += (frameSize.Height / 2);
var textRect = new CGRect (xCoord, yCoord, frameSize.Width, frameSize.Height);
using (CGPath path = new CGPath ()) {
path.AddRect (textRect);
ctx.SetShadow (new CGSize (0.0f, 1.0f), 0.0f, shadowColor.CGColor);
using (CTFrame frame = framesetter.GetFrame (range, path, null)) {
if (flipContext) {
ctx.SaveState ();
ctx.TranslateCTM (0, rect.Height);
ctx.ScaleCTM (1, -1);
frame.Draw (ctx);
ctx.RestoreState ();
} else {
frame.Draw (ctx);
}
}
}
}
}
}
}
}
}
}示例6: DrawInContext
public override void DrawInContext(CGContext ctx)
{
base.DrawInContext (ctx);
var knobFrame = CGRect.Inflate(Bounds, -2.0f, -2.0f);
UIBezierPath knobPath = UIBezierPath.FromRoundedRect((CGRect)knobFrame, (nfloat)knobFrame.Height / 2.0f);
// 1) fill - with a subtle shadow
ctx.SetShadow(new CGSize(0, 1), 1.0f, UIColor.Gray.CGColor);
ctx.SetFillColor( UIColor.White.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 / 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();
}
//
// if (Highlighted)
// ctx.SetFillColor (UIColor.Yellow.CGColor);
// else
// ctx.SetFillColor (UIColor.Red.CGColor);
//
// ctx.FillRect (Bounds);
}