public override void Draw(RectangleF rect)
{
base.Draw(rect);
if (!IsSelected)
{
return;
}
CGContext context = UIGraphics.GetCurrentContext();
context.SaveState();
context.SetFillColorWithColor(new UIColor(0, 0, 0, 0.5f).CGColor);
context.BeginPath();
// top border
context.AddRect(new RectangleF(0, 0, Frame.Width, 4));
// left border
context.AddRect(new RectangleF(0, 0, 4, Frame.Height));
// right border
context.AddRect(new RectangleF(Frame.Width - 4, 0, 4, Frame.Height));
// bottom border
context.AddRect(new RectangleF(0, Frame.Height - 4, Frame.Width, 4));
context.ClosePath();
context.FillPath();
context.RestoreState();
context.SetBlendMode(MonoTouch.CoreGraphics.CGBlendMode.Clear);
}
private void DrawShopping(CGContext context)
{
LearnerTemplateStyle shoppingStyle = this.FormsShimmer.ShoppingStyle;
float lineSpacing = (float)shoppingStyle.LineSpacing;
float lineHeight = (float)shoppingStyle.LineHeight;
float num1 = shoppingStyle.Width >= 0.0 ? (float)shoppingStyle.Width : this.templateWidth;
float num2 = (shoppingStyle.Height >= 0.0 ? (float)shoppingStyle.Height : this.templateHeight) / 2f;
context.AddRect(new CGRect((double)this.templateX, (double)this.centerY - (double)num2, (double)num1, (double)num2 * 2.0 - (double)lineHeight * 0.6 * 2.0 - (double)lineSpacing * 0.6 * 2.0 * 1.5));
context.AddRect(new CGRect((double)this.templateX, (double)this.centerY + (double)num2 - (double)lineHeight * 0.6 * 2.0 - (double)lineSpacing * 0.6, (double)num1, (double)lineHeight * 0.6));
context.AddRect(new CGRect((double)this.templateX, (double)this.centerY + (double)num2 - (double)lineHeight * 0.6, (double)num1, (double)lineHeight * 0.6));
}
private void DrawVideo(CGContext context)
{
LearnerTemplateStyle videoStyle = this.FormsShimmer.VideoStyle;
float circleRadius = (float)videoStyle.CircleRadius;
float lineSpacing = (float)videoStyle.LineSpacing;
float lineHeight = (float)videoStyle.LineHeight;
float width = videoStyle.Width >= 0.0 ? (float)videoStyle.Width : this.templateWidth;
float num1 = (videoStyle.Height >= 0.0 ? (float)videoStyle.Height : this.templateHeight) / 2f;
float num2 = this.templateX + circleRadius * 2f + this.columnSpacing;
context.AddRect(new CGRect(this.templateX, this.centerY - num1, width, (float)((double)num1 * 2.0 - (double)circleRadius * 2.0) - lineSpacing));
context.AddEllipseInRect(new CGRect(this.templateX, (float)((double)this.centerY + (double)num1 - (double)circleRadius * 2.0), circleRadius * 2f, circleRadius * 2f));
context.AddRect(new CGRect((double)num2, (double)this.centerY + (double)num1 - (double)circleRadius * 2.0 + (double)lineSpacing * 0.5, (double)width - (double)this.columnSpacing - (double)circleRadius * 2.0, (double)lineHeight));
context.AddRect(new CGRect((double)num2, (double)this.centerY + (double)num1 - (double)circleRadius * 2.0 + (double)lineSpacing * 1.5 + (double)lineHeight, (double)width - (double)this.columnSpacing - (double)circleRadius * 2.0, (double)lineHeight));
}
private void DrawPersona(CGContext context)
{
LearnerTemplateStyle personaStyle = this.FormsShimmer.PersonaStyle;
float circleRadius = (float)personaStyle.CircleRadius;
float lineSpacing = (float)personaStyle.LineSpacing;
float lineHeight = (float)personaStyle.LineHeight;
float num1 = personaStyle.Width >= 0.0 ? (float)personaStyle.Width : this.templateWidth;
float num2 = (personaStyle.Height >= 0.0 ? (float)personaStyle.Height : this.templateHeight) / 2f;
float num3 = (double)num2 > 0.0 ? ((double)circleRadius <= (double)num2 ? circleRadius : num2) : circleRadius;
float num4 = this.templateX + num3 * 2f + this.columnSpacing;
context.AddEllipseInRect(new CGRect(this.templateX, this.centerY - num3, num3 * 2f, num3 * 2f));
context.AddRect(new CGRect((double)num4, (double)this.centerY - (double)num3 + (double)lineSpacing, ((double)num1 - (double)this.columnSpacing - (double)num3 * 2.0) * 0.8, (double)lineHeight));
context.AddRect(new CGRect((double)num4, (double)this.centerY - (double)num3 + (double)lineSpacing + (double)lineHeight + (double)lineSpacing, ((double)num1 - (double)this.columnSpacing - (double)num3 * 2.0) * 0.5, (double)lineHeight));
}
public override void DrawImage(object backend, ImageDescription img, Rectangle srcRect, Rectangle destRect)
{
var cb = (CGContextBackend)backend;
CGContext ctx = cb.Context;
// Add the styles that have been globaly set to the context
img.Styles = img.Styles.AddRange(cb.Styles);
ctx.SaveState();
ctx.SetAlpha((float)img.Alpha);
double rx = destRect.Width / srcRect.Width;
double ry = destRect.Height / srcRect.Height;
ctx.AddRect(new CGRect((nfloat)destRect.X, (nfloat)destRect.Y, (nfloat)destRect.Width, (nfloat)destRect.Height));
ctx.Clip();
ctx.TranslateCTM((float)(destRect.X - (srcRect.X * rx)), (float)(destRect.Y - (srcRect.Y * ry)));
ctx.ScaleCTM((float)rx, (float)ry);
NSImage image = (NSImage)img.Backend;
if (image is CustomImage)
{
((CustomImage)image).DrawInContext((CGContextBackend)backend, img);
}
else
{
var size = new CGSize((nfloat)img.Size.Width, (nfloat)img.Size.Height);
var rr = new CGRect(0, 0, size.Width, size.Height);
ctx.ScaleCTM(1f, -1f);
ctx.DrawImage(new CGRect(0, -size.Height, size.Width, size.Height), image.AsCGImage(ref rr, NSGraphicsContext.CurrentContext, null));
}
ctx.RestoreState();
}
private void DrawArticle(CGContext context)
{
LearnerTemplateStyle articleStyle = this.FormsShimmer.ArticleStyle;
float lineSpacing = (float)articleStyle.LineSpacing;
float lineHeight = (float)articleStyle.LineHeight;
float squareSize = (float)articleStyle.SquareSize;
float num1 = articleStyle.Width >= 0.0 ? (float)articleStyle.Width : this.templateWidth;
float num2 = (articleStyle.Height >= 0.0 ? (float)articleStyle.Height : this.templateHeight) / 2f;
float x = this.templateX + squareSize + this.columnSpacing;
context.AddRect(new CGRect(this.templateX, this.centerY - num2, squareSize, num2 * 2f));
context.AddRect(new CGRect(x, this.centerY - num2, num1 - this.columnSpacing - squareSize, lineHeight));
context.AddRect(new CGRect((double)x, (double)this.centerY - (double)num2 + (double)lineHeight + (double)lineSpacing, ((double)num1 - (double)this.columnSpacing - (double)squareSize) * 0.8, (double)lineHeight));
context.AddRect(new CGRect((double)x, (double)this.centerY + (double)lineSpacing, ((double)num1 - (double)this.columnSpacing - (double)squareSize) * 0.4, (double)lineHeight));
context.AddRect(new CGRect((double)x, (double)this.centerY + (double)lineHeight + (double)lineSpacing * 2.0, ((double)num1 - (double)this.columnSpacing - (double)squareSize) * 0.3, (double)lineHeight));
}
protected virtual void HandleShapeDraw(CGContext currentContext, RectangleF rect)
{
// Only used for circles
var centerX = rect.X + (rect.Width / 2);
var centerY = rect.Y + (rect.Height / 2);
var radius = rect.Width / 2;
var startAngle = 0;
var endAngle = (float)(Math.PI * 2);
switch (Element.ShapeType)
{
case ShapeType.Box:
HandleStandardDraw(currentContext, rect, () => {
if (Element.CornerRadius > 0)
{
var path = UIBezierPath.FromRoundedRect(rect, Element.CornerRadius);
currentContext.AddPath(path.CGPath);
}
else
{
currentContext.AddRect(rect);
}
});
break;
case ShapeType.Circle:
HandleStandardDraw(currentContext, rect, () => currentContext.AddArc(centerX, centerY, radius, startAngle, endAngle, true));
break;
case ShapeType.CircleIndicator:
HandleStandardDraw(currentContext, rect, () => currentContext.AddArc(centerX, centerY, radius, startAngle, endAngle, true));
HandleStandardDraw(currentContext, rect, () => currentContext.AddArc(centerX, centerY, radius, QuarterTurnCounterClockwise, (float)(Math.PI * 2 * (Element.IndicatorPercentage / 100)) + QuarterTurnCounterClockwise, false), Element.StrokeWidth + 3);
break;
}
}
public override void DrawImage(object backend, ImageDescription img, Rectangle srcRect, Rectangle destRect)
{
CGContext ctx = ((CGContextBackend)backend).Context;
NSImage image = img.ToNSImage();
ctx.SaveState();
ctx.SetAlpha((float)img.Alpha);
double rx = destRect.Width / srcRect.Width;
double ry = destRect.Height / srcRect.Height;
ctx.AddRect(new RectangleF((float)destRect.X, (float)destRect.Y, (float)destRect.Width, (float)destRect.Height));
ctx.Clip();
ctx.TranslateCTM((float)(destRect.X - (srcRect.X * rx)), (float)(destRect.Y - (srcRect.Y * ry)));
ctx.ScaleCTM((float)rx, (float)ry);
if (image is CustomImage)
{
((CustomImage)image).DrawInContext((CGContextBackend)backend);
}
else
{
RectangleF rr = new RectangleF(0, 0, (float)image.Size.Width, image.Size.Height);
ctx.ScaleCTM(1f, -1f);
ctx.DrawImage(new RectangleF(0, -image.Size.Height, image.Size.Width, image.Size.Height), image.AsCGImage(ref rr, NSGraphicsContext.CurrentContext, null));
}
ctx.RestoreState();
}
private void DrawProfile(CGContext context)
{
LearnerTemplateStyle profileStyle = this.FormsShimmer.ProfileStyle;
float circleRadius = (float)profileStyle.CircleRadius;
float lineSpacing = (float)profileStyle.LineSpacing;
float lineHeight = (float)profileStyle.LineHeight;
float width = profileStyle.Width >= 0.0 ? (float)profileStyle.Width : this.templateWidth;
float num1 = (profileStyle.Height >= 0.0 ? (float)profileStyle.Height : this.templateHeight) / 2f;
double num2 = (double)width / 2.0;
float num3 = width / 2f;
context.AddEllipseInRect(new CGRect(this.templateX + num3 - circleRadius, this.centerY - num1, circleRadius * 2f, circleRadius * 2f));
context.AddRect(new CGRect((double)this.templateX + (double)num3 - (double)width * 0.2, (double)this.centerY + (double)lineSpacing, (double)width * 0.2 * 2.0, (double)lineHeight * 2.0));
context.AddRect(new CGRect((double)this.templateX + (double)num3 - (double)width * 0.3, (double)this.centerY + (double)lineSpacing * 2.0 + (double)lineHeight * 2.0, (double)width * 0.3 * 2.0, (double)lineHeight * 2.0));
context.AddRect(new CGRect(this.templateX, (float)((double)this.centerY + (double)num1 - (double)lineHeight * 2.0) - lineSpacing, width, lineHeight));
context.AddRect(new CGRect(this.templateX, this.centerY + num1 - lineHeight, width, lineHeight));
}
private void DrawFeed(CGContext context)
{
LearnerTemplateStyle feedStyle = this.FormsShimmer.FeedStyle;
float circleRadius = (float)feedStyle.CircleRadius;
float lineSpacing = (float)feedStyle.LineSpacing;
float lineHeight = (float)feedStyle.LineHeight;
float num1 = feedStyle.Width >= 0.0 ? (float)feedStyle.Width : this.templateWidth;
float num2 = (feedStyle.Height >= 0.0 ? (float)feedStyle.Height : this.templateHeight) / 2f;
float num3 = this.templateX + circleRadius * 2f + this.columnSpacing;
context.AddEllipseInRect(new CGRect(this.templateX, this.centerY - num2, circleRadius * 2f, circleRadius * 2f));
context.AddRect(new CGRect((double)num3, (double)this.centerY - (double)num2 + (double)lineSpacing * 0.5, (double)num1 - (double)this.columnSpacing - (double)circleRadius * 2.0, (double)lineHeight));
context.AddRect(new CGRect((double)num3, (double)this.centerY - (double)num2 + (double)lineSpacing * 1.5 + (double)lineHeight, ((double)num1 - (double)this.columnSpacing - (double)circleRadius * 2.0) * 0.5, (double)lineHeight));
context.AddRect(new CGRect((double)this.templateX, (double)this.centerY - (double)num2 + (double)circleRadius * 2.0 + (double)lineSpacing, (double)num1, (double)num2 * 2.0 - (double)lineHeight * 0.6 * 2.0 - (double)lineSpacing * 0.6 * 2.0 * 1.5 - (double)circleRadius * 2.0 - (double)lineSpacing));
context.AddRect(new CGRect((double)this.templateX, (double)this.centerY + (double)num2 - (double)lineHeight * 0.6 * 2.0 - (double)lineSpacing * 0.6, (double)num1, (double)lineHeight * 0.6));
context.AddRect(new CGRect((double)this.templateX, (double)this.centerY + (double)num2 - (double)lineHeight * 0.6, (double)num1, (double)lineHeight * 0.6));
}
//绘图
private void DrawWave(CGRect rect)
{
//获取图片控件大小
int width = (int)rect.Width;
int height = (int)rect.Height;
System.Diagnostics.Debug.Print($"{DateTime.Now}, DrawWave: width={width}, height={height}");
MaxHeight = height;
CGContext context = UIGraphics.GetCurrentContext();
if (BioBuf.Length > 0)
{
//创建画笔
context.SetLineWidth(1);//画笔线宽
context.SetStrokeColor(UIColor.Blue.CGColor);//画笔颜色
//画曲线
int x = 0;
int y1 = 0;
int y2 = 0;
context.MoveTo(x, y1);//起点
for (int i = 0; i < BioBuf.Length; i++)
{
x = i;
y1 = y2;
y2 = WaveHeight(BioBuf[i]);
context.AddLineToPoint(x + 1, y2);//终点
}
context.StrokePath();//画线
//画基线
if (BioBaselien > 0)
{
//创建画笔
context.SetStrokeColor(UIColor.Red.CGColor);//画笔颜色
y2 = WaveHeight(BioBaselien);
context.MoveTo(0, y2);//起点
context.AddLineToPoint(BioBuf.Length, y2);//终点
context.StrokePath();//画线}
}
}
//创建画笔
context.SetStrokeColor(UIColor.Gray.CGColor);//画笔颜色
//画边界
context.AddRect(new CGRect(0, 0, width, height));
context.StrokePath();//画线
System.Diagnostics.Debug.Print($"{DateTime.Now}, DrawWave");
}
private void DrawAudioMixTracks(CGRect bannerRect, CGRect rowRect, ref float runningTop)
{
bannerRect.Y = runningTop;
CGContext context = UIGraphics.GetCurrentContext();
context.SetFillColor(1.00f, 1.00f, 1.00f, 1.00f); // white
NSString compositionTitle = new NSString("AVAudioMix");
compositionTitle.DrawString(bannerRect, UIFont.PreferredCaption1);
runningTop += (float)bannerRect.Height;
foreach (List <CGPoint> mixTrack in audioMixTracks)
{
rowRect.Y = runningTop;
CGRect rampRect = rowRect;
rampRect.Width = (float)duration.Seconds * scaledDurationToWidth;
rampRect = rampRect.Inset(3f, 3f);
context.SetFillColor(0.55f, 0.02f, 0.02f, 1.00f); // darker red
context.SetStrokeColor(0.87f, 0.10f, 0.10f, 1.00f); // brighter red
context.SetLineWidth(2f);
context.AddRect(rampRect);
context.DrawPath(CGPathDrawingMode.FillStroke);
context.BeginPath();
context.SetStrokeColor(0.95f, 0.68f, 0.09f, 1.00f); // yellow
context.SetLineWidth(3f);
bool firstPoint = true;
foreach (CGPoint pointValue in mixTrack)
{
CGPoint timeVolumePoint = pointValue;
CGPoint pointInRow = new CGPoint();
pointInRow.X = rampRect.X + timeVolumePoint.X * scaledDurationToWidth;
pointInRow.Y = rampRect.Y + (0.9f - 0.8f * timeVolumePoint.Y) * rampRect.Height;
pointInRow.X = (float)Math.Max(pointInRow.X, rampRect.GetMinX());
pointInRow.X = (float)Math.Min(pointInRow.X, rampRect.GetMaxX());
if (firstPoint)
{
context.MoveTo(pointInRow.X, pointInRow.Y);
firstPoint = false;
}
else
{
context.AddLineToPoint(pointInRow.X, pointInRow.Y);
}
}
context.StrokePath();
runningTop += (float)rowRect.Height;
}
runningTop += GapAfterRows;
}
//
// Helper function to generate shadow
//
private void GenerateShapeShadow(CGContext context, UIBezierPath shapeObject, nfloat xOffset, nfloat yOffset, nfloat blurValue, CGBlendMode blendingMode, UIColor shadowColor, nfloat borderWidth, int borderPosition, nfloat iWidth, nfloat iHeight)
{
CGPoint basePoint;
CGPoint offsetPoint;
CGSize calculatedShadowOffset;
nfloat calculatedShadowBlur;
CGPoint constPointZero;
constPointZero = new CGPoint(0, 0);
basePoint = baseTransform.TransformPoint(context.PointToDeviceSpace(constPointZero));
offsetPoint = baseTransform.TransformPoint(context.PointToDeviceSpace(new CGPoint(xOffset, yOffset)));
calculatedShadowOffset = new CGSize(offsetPoint.X - basePoint.X, offsetPoint.Y - basePoint.Y);
if (blurValue == 0)
{
calculatedShadowBlur = 0;
}
else
{
calculatedShadowBlur = Hypot(calculatedShadowOffset.Width, calculatedShadowOffset.Height) / blurValue;
}
context.SetShadow(calculatedShadowOffset, calculatedShadowBlur, shadowColor.CGColor);
context.SetBlendMode(blendingMode);
context.BeginTransparencyLayer(null);
UIColor.Black.SetFill();
shapeObject.Fill();
if (borderWidth > 0)
{
if (borderPosition == 0)
{
context.SaveState();
shapeObject.LineWidth = borderWidth;
UIColor.Black.SetStroke();
shapeObject.Stroke();
context.RestoreState();
}
if (borderPosition == 1)
{
context.BeginPath();
context.AddPath(shapeObject.CGPath);
context.EOClip();
}
if (borderPosition == 2)
{
context.BeginPath();
context.AddPath(shapeObject.CGPath);
context.AddRect(RectangleFExtensions.Inset(shapeObject.Bounds, iWidth, iHeight));
context.EOClip();
}
}
context.EndTransparencyLayer();
}
public static void FillRect(CGContext context, RectangleF rect, CGColor color)
{
context.SaveState();
context.AddRect(rect);
context.Clip();
context.SetFillColor(color);
context.FillRect(rect);
context.RestoreState();
}
public override void DrawInContext(CGContext context)
{
// Drawing with a white stroke color
context.SetRGBStrokeColor(1, 1, 1, 1);
// And drawing with a blue fill color
context.SetRGBFillColor(0, 0, 1, 1);
// Draw them with a 2 stroke width so they are a bit more visible.
context.SetLineWidth(2);
// Add Rect to the current path, then stroke it
context.AddRect(new RectangleF(30, 30, 60, 60));
context.StrokePath();
// Stroke Rect convenience that is equivalent to above
context.StrokeRect(new RectangleF(30, 120, 60, 60));
// Stroke rect convenience equivalent to the above, plus a call to context.SetLineWidth ().
context.StrokeRectWithWidth(new RectangleF(30, 210, 60, 60), 10);
// Demonstate the stroke is on both sides of the path.
context.SaveState();
context.SetRGBStrokeColor(1, 0, 0, 1);
context.StrokeRectWithWidth(new RectangleF(30, 210, 60, 60), 2);
context.RestoreState();
var rects = new RectangleF []
{
new RectangleF(120, 30, 60, 60),
new RectangleF(120, 120, 60, 60),
new RectangleF(120, 210, 60, 60),
};
// Bulk call to add rects to the current path.
context.AddRects(rects);
context.StrokePath();
// Create filled rectangles via two different paths.
// Add/Fill path
context.AddRect(new RectangleF(210, 30, 60, 60));
context.FillPath();
// Fill convienience.
context.FillRect(new RectangleF(210, 120, 60, 60));
}
/// <summary> 连线绘制图案(以设定颜色绘制) 将选中的圆形以color颜色链接起来
/// </summary>
/// <param name="rect">图形上下文</param>
/// <param name="color">连线颜色</param>
public void ConnectCirclesInRect(CGRect rect, UIColor color)
{
//获取上下文
CGContext ctx = UIGraphics.GetCurrentContext();
// 添加路径
ctx.AddRect(rect);
//是否剪裁
ClipSubviewsWhenConnectInContext(ctx, Clip);
//剪裁上下文
ctx.EOClip();
// 遍历数组中的circle
for (int index = 0; index < CircleSet.Count; index++)
{
// 取出选中按钮
PCCircle circle = CircleSet[index];
// 起点按钮
if (index == 0)
{
ctx.MoveTo(circle.Center.X, circle.Center.Y);
}
else
{
// 全部是连线
ctx.AddLineToPoint(circle.Center.X, circle.Center.Y);
}
}
// 连接最后一个按钮到手指当前触摸得点
if (!CurrentPoint.Equals(new CGPoint(0, 0)))
{
foreach (var item in Subviews)
{
if (GetCircleState() == CircleState.CircleStateError || GetCircleState() == CircleState.CircleStateLastOneError)
{
// 如果是错误的状态下不连接到当前点
}
else
{
ctx.AddLineToPoint(CurrentPoint.X, CurrentPoint.Y);
}
}
}
//线条转角样式
ctx.SetLineCap(CGLineCap.Round);
ctx.SetLineJoin(CGLineJoin.Round);
// 设置绘图的属性
ctx.SetLineWidth(PCCircleViewConst.CircleConnectLineWidth);
// 线条颜色
color.SetColor();
//渲染路径
ctx.StrokePath();
}
private void DrawCompositionTracks(CGRect bannerRect, CGRect rowRect, ref float runningTop)
{
bannerRect.Y = runningTop;
CGContext context = UIGraphics.GetCurrentContext();
context.SetFillColor(1.00f, 1.00f, 1.00f, 1.00f);
NSString compositionTitle = new NSString("AVComposition");
compositionTitle.DrawString(bannerRect, UIFont.PreferredCaption1);
runningTop += (float)bannerRect.Height;
foreach (List <APLCompositionTrackSegmentInfo> track in compositionTracks)
{
rowRect.Y = runningTop;
CGRect segmentRect = rowRect;
foreach (APLCompositionTrackSegmentInfo segment in track)
{
segmentRect.Width = (float)segment.TimeRange.Duration.Seconds * scaledDurationToWidth;
if (segment.Empty)
{
context.SetFillColor(0.00f, 0.00f, 0.00f, 1.00f);
DrawVerticallyCenteredInRect("empty", segmentRect);
}
else
{
if (segment.MediaType == AVMediaType.Video)
{
context.SetFillColor(0.00f, 0.36f, 0.36f, 1.00f); // blue-green
context.SetStrokeColor(0.00f, 0.50f, 0.50f, 1.00f); // brigher blue-green
}
else
{
context.SetFillColor(0.00f, 0.24f, 0.36f, 1.00f); // bluer-green
context.SetStrokeColor(0.00f, 0.33f, 0.60f, 1.00f); // brigher bluer-green
}
context.SetLineWidth(2f);
segmentRect = segmentRect.Inset(3f, 3f);
context.AddRect(segmentRect);
context.DrawPath(CGPathDrawingMode.FillStroke);
context.SetFillColor(0.00f, 0.00f, 0.00f, 1.00f); // white
DrawVerticallyCenteredInRect(segment.Description, segmentRect);
}
segmentRect.X += segmentRect.Width;
}
runningTop += (float)rowRect.Height;
}
runningTop += GapAfterRows;
}
public override void DrawInContext (CGContext context)
{
// Drawing with a white stroke color
context.SetRGBStrokeColor (1, 1, 1, 1);
// And drawing with a blue fill color
context.SetRGBFillColor (0, 0, 1, 1);
// Draw them with a 2 stroke width so they are a bit more visible.
context.SetLineWidth (2);
// Add Rect to the current path, then stroke it
context.AddRect (new RectangleF (30, 30, 60, 60));
context.StrokePath ();
// Stroke Rect convenience that is equivalent to above
context.StrokeRect (new RectangleF (30, 120, 60, 60));
// Stroke rect convenience equivalent to the above, plus a call to context.SetLineWidth ().
context.StrokeRectWithWidth (new RectangleF (30, 210, 60, 60), 10);
// Demonstate the stroke is on both sides of the path.
context.SaveState ();
context.SetRGBStrokeColor (1, 0, 0, 1);
context.StrokeRectWithWidth (new RectangleF (30, 210, 60, 60), 2);
context.RestoreState ();
var rects = new RectangleF []
{
new RectangleF (120, 30, 60, 60),
new RectangleF (120, 120, 60, 60),
new RectangleF (120, 210, 60, 60),
};
// Bulk call to add rects to the current path.
context.AddRects (rects);
context.StrokePath ();
// Create filled rectangles via two different paths.
// Add/Fill path
context.AddRect (new RectangleF (210, 30, 60, 60));
context.FillPath ();
// Fill convienience.
context.FillRect (new RectangleF (210, 120, 60, 60));
}
public void FillRect(float x, float y, float width, float height)
{
if (_g != null)
{
_c.AddRect(new NativeRect(x, y, width, height));
FillPath();
}
else
{
_c.FillRect(new NativeRect(x, y, width, height));
}
}
public void DrawRectangle(Rect frame, Pen pen = null, Brush brush = null)
{
if (pen == null && brush == null)
{
return;
}
DrawElement(() => {
context.AddRect(Conversions.GetCGRect(frame));
return(frame);
}, pen, brush);
}
public static UIImage ScaleToSize(UIImage image, int width, int height)
{
UIGraphics.BeginImageContext(new SizeF(width, height));
CGContext ctx = UIGraphics.GetCurrentContext();
float ratio = (float)width / (float)height;
ctx.AddRect(new RectangleF(0.0f, 0.0f, width, height));
ctx.Clip();
var cg = image.CGImage;
float h = cg.Height;
float w = cg.Width;
float ar = w / h;
if (ar != ratio)
{
// Image's aspect ratio is wrong so we'll need to crop
float scaleY = height / h;
float scaleX = width / w;
PointF offset;
SizeF crop;
float size;
if (scaleX >= scaleY)
{
size = h * (w / width);
offset = new PointF(0.0f, h / 2.0f - size / 2.0f);
crop = new SizeF(w, size);
}
else
{
size = w * (h / height);
offset = new PointF(w / 2.0f - size / 2.0f, 0.0f);
crop = new SizeF(size, h);
}
ctx.ScaleCTM(1.0f, -1.0f);
using (var copy = cg.WithImageInRect(new RectangleF(offset, crop))) {
ctx.DrawImage(new RectangleF(0.0f, 0.0f, width, -height), copy);
}
}
else
{
image.Draw(new RectangleF(0.0f, 0.0f, width, height));
}
UIImage scaled = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
return(scaled);
}
public override void DrawInteriorWithFrame(CGRect cellFrame, NSView inView)
{
CGContext ctx = NSGraphicsContext.CurrentContext.GraphicsPort;
ctx.SaveState();
ctx.AddRect(cellFrame);
ctx.Clip();
foreach (CellPos cp in GetCells(cellFrame))
{
cp.Cell.DrawInteriorWithFrame(cp.Frame, inView);
}
ctx.RestoreState();
}
public override void Draw(CGRect rect)
{
base.Draw(rect);
CGContext context = UIGraphics.GetCurrentContext();
context.SaveState();
context.SetFillColor(UIColor.Black.CGColor);
context.SetLineWidth(1);
context.SetFillColor(UIColor.Clear.CGColor);
context.AddRect(this.Frame.Subtract(1, 1, 1, 1));
context.RestoreState();
}
public override void DrawInteriorWithFrame(System.Drawing.RectangleF cellFrame, NSView inView)
{
if (DrawsBackground)
{
CGContext ctx = NSGraphicsContext.CurrentContext.GraphicsPort;
ctx.AddRect(cellFrame);
ctx.SetFillColorSpace(Util.DeviceRGBColorSpace);
ctx.SetStrokeColorSpace(Util.DeviceRGBColorSpace);
ctx.SetFillColor(bgColor);
ctx.DrawPath(CGPathDrawingMode.Fill);
}
base.DrawInteriorWithFrame(TitleRectForBounds(cellFrame), inView);
}
private void _chart_OnDrawBar(object sender, Charting.Controls.Chart.DrawEventArgs <Events.DoubleDrawingData> e)
{
using (CGContext g = UIGraphics.GetCurrentContext())
{
g.SetLineWidth(1);
Colors[e.Data.SeriesNo].SetFill();
Colors[e.Data.SeriesNo].SetStroke();
RectangleF rect = new RectangleF((float)e.Data.XFrom, (float)e.Data.YFrom, (float)(e.Data.XTo - e.Data.XFrom), (float)(e.Data.YTo - e.Data.YFrom));
g.AddRect(rect);
g.DrawPath(CGPathDrawingMode.FillStroke);
}
}
protected virtual void DrawBox(CGContext context, float x, float y, float width, float height, float cornerRadius, bool fill, bool stroke)
{
var rect = new RectangleF(x, y, width, height);
if (cornerRadius > 0)
{
context.AddPath(UIBezierPath.FromRoundedRect(rect, cornerRadius).CGPath);
}
else
{
context.AddRect(rect);
}
this.DrawPath(context, fill, stroke);
}
public override void Draw(CGRect rect)
{
base.Draw(rect);
using (CGContext context = UIGraphics.GetCurrentContext())
{
context.AddRect(new CGRect(0, 0, Frame.Width, 1));
context.Clip();
UIColor color = Rock.Mobile.UI.Util.GetUIColor(0x777777FF);
// probably should change this to not being a gradient
CGGradient gradiant = new CGGradient(CGColorSpace.CreateDeviceRGB(), new CGColor[] { color.CGColor, color.CGColor });
context.DrawLinearGradient(gradiant, new CGPoint(0, 0), new CGPoint(Frame.Width, 0), CGGradientDrawingOptions.DrawsBeforeStartLocation);
}
}
public void DrawRectangle(Rect frame, Size corner, Pen pen = null, Brush brush = null)
{
if (pen == null && brush == null)
{
return;
}
DrawElement(() => {
if (corner.Width > 0 || corner.Height > 0)
{
AddRoundedRect(Conversions.GetCGRect(frame), Conversions.GetCGSize(corner));
}
else
{
context.AddRect(Conversions.GetCGRect(frame));
}
return(frame);
}, pen, brush);
}
public override void Draw(CGRect rect)
{
base.Draw(rect);
if (!showQR)
{
return;
}
QRCodeData qrCodeData = qrGenerator.CreateQrCode(String.Format("{0},{1}", cost, userId), QRGenerator.ECCLevel.M);
//get graphics context
UIGraphics.BeginImageContext(new CGSize(300, 300));
using (CGContext g = UIGraphics.GetCurrentContext())
{
var drawQuietZones = true;
var pixelsPerModule = 10;
var size = (qrCodeData.ModuleMatrix.Count - (drawQuietZones ? 0 : 8)) * pixelsPerModule;
var offset = drawQuietZones ? 0 : 4 * pixelsPerModule;
UIColor.Black.SetFill();
for (var x = 0; x < size + offset; x = x + pixelsPerModule)
{
for (var y = 0; y < size + offset; y = y + pixelsPerModule)
{
var module = qrCodeData.ModuleMatrix[(y + pixelsPerModule) / pixelsPerModule - 1][(x + pixelsPerModule) / pixelsPerModule - 1];
if (module)
{
g.AddRect(new CGRect(x - offset, y - offset, pixelsPerModule, pixelsPerModule));
}
}
}
g.DrawPath(CGPathDrawingMode.Fill);
g.SaveState();
qrImage = UIGraphics.GetImageFromCurrentImageContext();
qrPainted = true;
view.Image = qrImage;
}
UIGraphics.EndImageContext();
Console.WriteLine("qrImage");
Console.WriteLine(qrImage);
}
private void DrawCustomView(CGContext context)
{
if (this.FormsShimmer == null || this.FormsShimmer.CustomView == null)
{
return;
}
context.SetStrokeColor(UIColor.Clear.CGColor);
context.SetFillColor(this.FormsShimmer.Color.ToCGColor());
foreach (ShimmerViewRenderer shimmerViewRenderer in this.GetShimmerViewRenderers(Xamarin.Forms.Platform.iOS.Platform.GetRenderer((VisualElement)this.FormsShimmer.CustomView) as UIView))
{
if (shimmerViewRenderer.Element == null || !(shimmerViewRenderer.Element is ShimmerView element))
{
return;
}
nfloat nfloat1 = (nfloat)element.CornerRadius;
(double x2, double y2) = this.GetPosition((VisualElement)element);
CGRect frame = shimmerViewRenderer.Frame;
CGRect rect = new CGRect(x2, y2, (double)frame.Width, (double)frame.Height);
if (nfloat1 > (nfloat)0)
{
if (this.roundedPath == (CGPath)null)
{
this.roundedPath = new CGPath();
}
nfloat nfloat2 = (nfloat)Math.Min((double)(frame.Width / (nfloat)2), (double)(frame.Height / (nfloat)2));
if (nfloat1 > nfloat2)
{
nfloat1 = nfloat2;
}
this.roundedPath.AddRoundedRect(rect, nfloat1, nfloat1);
context.AddPath(this.roundedPath);
}
else
{
context.AddRect(rect);
}
}
context.DrawPath(CGPathDrawingMode.FillStroke);
}
public override void DrawInteriorWithFrame(CGRect cellFrame, NSView inView)
{
// FIXME: although ObjectValue seems to be set and Fill called correctly,
// the table flickers without an additional Fill call, especially
// on expansion/collapsing with partially hidden cells (row wise).
// Cocoa seems to be resetting some NSCell bits, which may be
// related to the deprecated NSCell mode.
if (tablePosition != null)
{
Fill();
}
CGContext ctx = NSGraphicsContext.CurrentContext.GraphicsPort;
ctx.SaveState();
ctx.AddRect(cellFrame);
ctx.Clip();
foreach (CellPos cp in GetCells(cellFrame))
{
cp.Cell.DrawInteriorWithFrame(cp.Frame, inView);
}
ctx.RestoreState();
}
public static void AddRoundedRectToPath(CGContext context, RectangleF rect, float ovalWidth, float ovalHeight)
{
float fw, fh;
if (ovalWidth == 0 || ovalHeight == 0)
{
context.AddRect(rect);
return;
}
context.SaveState();
context.TranslateCTM(rect.GetMinX(), rect.GetMinY());
context.ScaleCTM(ovalWidth, ovalHeight);
fw = rect.Width / ovalWidth;
fh = rect.Height / ovalHeight;
context.MoveTo(fw, fh / 2);
context.AddArcToPoint(fw, fh, fw / 2, fh, 1);
context.AddArcToPoint(0, fh, 0, fh / 2, 1);
context.AddArcToPoint(0, 0, fw / 2, 0, 1);
context.AddArcToPoint(fw, 0, fw, fh / 2, 1);
context.ClosePath();
context.RestoreState();
}
private void DrawBackground(CGContext context)
{
context.SetFillDialogBorderColor();
context.AddRect(
new RectangleF(Frame.X - Border,
Frame.Y - Border,
Frame.Width + 2 * Border,
Frame.Height + 2 * Border));
context.DrawPath(CGPathDrawingMode.Fill);
context.SetFillDialogBackgroungColor();
context.AddRect(Frame);
context.DrawPath(CGPathDrawingMode.Fill);
}
public static void FillGradient(CGContext context, RectangleF rect, CGColor color1, CGColor color2)
{
CGGradient gradientBackground;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
float[] locationListBackground = new float[] { 1.0f, 0.0f };
List<float> colorListBackground = new List<float>();
colorListBackground.AddRange(color1.Components);
colorListBackground.AddRange(color2.Components);
gradientBackground = new CGGradient(colorSpace, colorListBackground.ToArray(), locationListBackground);
context.SaveState();
context.AddRect(rect);
context.Clip();
//context.ScaleCTM(1, -1);
context.DrawLinearGradient(gradientBackground, new PointF(rect.X, rect.Y), new PointF(rect.X + rect.Width, rect.Y + rect.Height), CGGradientDrawingOptions.DrawsBeforeStartLocation);
context.RestoreState();
}
public static void AddRoundedRectToPath(CGContext context, RectangleF rect, float ovalWidth, float ovalHeight)
{
float fw, fh;
if (ovalWidth == 0 || ovalHeight == 0)
{
context.AddRect(rect);
return;
}
context.SaveState();
context.TranslateCTM(rect.GetMinX(), rect.GetMinY());
context.ScaleCTM(ovalWidth, ovalHeight);
fw = rect.Width / ovalWidth;
fh = rect.Height / ovalHeight;
context.MoveTo(fw, fh / 2);
context.AddArcToPoint(fw, fh, fw / 2, fh, 1);
context.AddArcToPoint(0, fh, 0, fh / 2, 1);
context.AddArcToPoint(0, 0, fw / 2, 0, 1);
context.AddArcToPoint(fw, 0, fw, fh / 2, 1);
context.ClosePath();
context.RestoreState();
}
