本文整理汇总了C#中Xwt.Drawing.Context.Arc方法的典型用法代码示例。如果您正苦于以下问题：C# Context.Arc方法的具体用法？C# Context.Arc怎么用？C# Context.Arc使用的例子？那么恭喜您, 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Xwt.Drawing.Context的用法示例。
在下文中一共展示了Context.Arc方法的13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: PatternsAndImages
public void PatternsAndImages (Context ctx, double x, double y)
{
ctx.Save ();
ctx.Translate (x, y);
ctx.SetColor (Colors.Black);
// Dashed lines
ctx.SetLineWidth (2);
ctx.SetLineDash (15, 10, 10, 5, 5);
ctx.Rectangle (10, 10, 100, 100);
ctx.Stroke ();
ctx.SetLineDash (0);
// Image
var arcColor = new Color (1, 0, 1);
ImageBuilder ib = new ImageBuilder (30, 30);
ib.Context.Arc (15, 15, 15, 0, 360);
ib.Context.SetColor (arcColor);
ib.Context.Fill ();
ib.Context.SetColor (Colors.DarkKhaki);
ib.Context.Rectangle (0, 0, 5, 5);
ib.Context.Fill ();
var img = ib.ToVectorImage ();
ctx.DrawImage (img, 0, 0);
ctx.DrawImage (img, 0, 50, 50, 10);
ctx.Arc (100, 100, 15, 0, 360);
arcColor.Alpha = 0.4;
ctx.SetColor (arcColor);
ctx.Fill ();
// ImagePattern
ctx.Save ();
ctx.Translate (x + 130, y);
ctx.Pattern = new ImagePattern (img);
ctx.Rectangle (0, 0, 100, 100);
ctx.Fill ();
ctx.Restore ();
ctx.Restore ();
// Setting pixels
ctx.SetLineWidth (1);
for (int i=0; i<50;i++) {
for (var j=0; j<50;j++) {
Color c = Color.FromHsl (0.5, (double)i / 50d, (double)j / 50d);
ctx.Rectangle (i, j, 1, 1);
ctx.SetColor (c);
ctx.Fill ();
}
}
} 示例2: OnDraw
protected override void OnDraw (Context ctx, Rectangle bounds)
{
var lineWidth = bounds.Width / 32d;
var section = ((bounds.Width / 2) - lineWidth / 2) / 3;
ctx.SetLineWidth (lineWidth);
ctx.SetColor (Colors.Black);
ctx.Arc (bounds.Center.X, bounds.Center.Y, 1, 0, 360);
ctx.Stroke ();
ctx.SetColor (Colors.Red);
ctx.Arc (bounds.Center.X, bounds.Center.Y, section, 0, 360);
ctx.Stroke ();
ctx.SetColor (Colors.Green);
ctx.Arc (bounds.Center.X, bounds.Center.Y, section * 2, 0, 360);
ctx.Stroke ();
ctx.SetColor (Colors.Blue);
ctx.Arc (bounds.Center.X, bounds.Center.Y, section * 3, 0, 360);
ctx.Stroke ();
}示例3: OnDraw
protected override void OnDraw(Context ctx, Rectangle dirtyRect)
{
ctx.Save ();
ctx.Translate (-hscroll.Value, -vscroll.Value);
ctx.Rectangle (new Rectangle (0, 0, imageSize, imageSize));
ctx.SetColor (Xwt.Drawing.Colors.White);
ctx.Fill ();
ctx.Arc (imageSize / 2, imageSize / 2, imageSize / 2 - 20, 0, 360);
ctx.SetColor (new Color (0,0,1));
ctx.Fill ();
ctx.Restore ();
ctx.Rectangle (0, 0, Bounds.Width, 30);
ctx.SetColor (new Color (1, 0, 0, 0.5));
ctx.Fill ();
}示例4: OnDraw
protected override void OnDraw(Context ctx, Rectangle cellArea)
{
ctx.Rectangle (BackgroundBounds);
ctx.SetColor (new Color (0.9, 0.9, 0.9));
ctx.Fill ();
ctx.Rectangle (Bounds);
ctx.SetColor (new Color (0.7, 0.7, 0.7));
ctx.Fill ();
var pct = GetValue (ValueField);
var size = (cellArea.Width * pct.Value) / 100f;
cellArea.Width = (int) size;
ctx.SetLineWidth (1);
ctx.Rectangle (cellArea.Inflate (-0.5, -0.5));
ctx.SetColor (Selected ? Colors.Blue : Colors.LightBlue);
ctx.FillPreserve ();
ctx.SetColor (Colors.Gray);
ctx.Stroke ();
if (pct.YPos != -1) {
ctx.MoveTo (cellArea.Right, Bounds.Y + pct.YPos);
ctx.Arc (cellArea.Right, Bounds.Y + pct.YPos, 2.5, 0, 360);
ctx.SetColor (Colors.Red);
ctx.Fill ();
}
}示例5: Rectangles
public virtual void Rectangles (Context ctx, double x, double y)
{
ctx.Save ();
ctx.Translate (x, y);
// Simple rectangles
ctx.SetLineWidth (1);
ctx.Rectangle (0, 0, 10, 10);
ctx.SetColor (Colors.Black);
ctx.Fill ();
ctx.Rectangle (15, 0, 10, 10);
ctx.SetColor (Colors.Black);
ctx.Stroke ();
ctx.SetLineWidth (3);
ctx.Rectangle (0, 15, 10, 10);
ctx.SetColor (Colors.Black);
ctx.Fill ();
ctx.Rectangle (15, 15, 10, 10);
ctx.SetColor (Colors.Black);
ctx.Stroke ();
ctx.Restore ();
// Rectangle with hole
ctx.Save ();
ctx.Translate (x + 50, y);
ctx.Rectangle (0, 0, 40, 40);
ctx.MoveTo (35, 35);
ctx.RelLineTo (0, -20);
ctx.RelLineTo (-20, 0);
ctx.RelLineTo (0, 20);
ctx.ClosePath ();
ctx.SetColor (Colors.Black);
ctx.Fill ();
ctx.Restore ();
// Rounded Rectangle with Arcs
ctx.Save ();
ctx.Translate (x + 120, y);
var r = 5;
var l = 0;
var t = 0;
var w = 50;
var h = 30;
ctx.SetColor (Colors.Black);
// top left
ctx.Arc (l + r, t + r, r, 180, 270);
// top right
ctx.Arc (l + w - r, t + r, r, 270, 0);
// bottom right
ctx.Arc (l + w - r, t + h - r, r, 0, 90);
// bottom left
ctx.Arc (l + r, t + h - r, r, 90, 180);
ctx.ClosePath ();
ctx.StrokePreserve ();
ctx.SetColor (Colors.AntiqueWhite);
ctx.Fill ();
ctx.Restore ();
}示例6: Draw
void Draw (Context ctx, bool fill)
{
var parent = (RoundedFrameBox)Parent;
var border = parent.BorderSpacing;
var radius = parent.cornerRadius;
var rect = Bounds;
ctx.MoveTo (rect.X, rect.Y);
if (border.Top > 0) {
ctx.NewPath ();
if (radius.TopLeft > 0)
ctx.Arc (rect.Left + radius.TopLeft + border.Left / 2, rect.Top + radius.TopLeft + border.Top / 2, radius.TopLeft, 180, 270);
else
PathTo (ctx, rect.Left, rect.Top + border.Top / 2, fill);
if (radius.TopRight > 0) {
ctx.LineTo (rect.Right - (radius.TopRight + border.Right / 2), rect.Top + border.Top / 2);
ctx.Arc (rect.Right - (radius.TopRight + border.Right / 2), rect.Top + radius.TopRight + border.Top / 2, radius.TopRight, 270, 0);
} else
ctx.LineTo (rect.Right, rect.Top + border.Top / 2);
} else
PathTo (ctx, rect.Right - border.Right / 2, rect.Top, fill);
if (border.Right > 0)
// TODO: round corners if top/bottom border disabled
ctx.LineTo (rect.Right - border.Right / 2, rect.Bottom - (border.Bottom > 0 ? radius.BottomRight : 0));
else
PathTo (ctx, rect.Right - border.Right / 2, rect.Bottom - (border.Bottom > 0 ? radius.BottomRight : 0), fill);
if (border.Bottom > 0) {
if (radius.BottomRight > 0)
ctx.Arc (rect.Right - (radius.BottomRight + border.Right / 2), rect.Bottom - (radius.BottomRight + border.Bottom / 2), radius.BottomRight, 0, 90);
else
PathTo (ctx, rect.Right, rect.Bottom - border.Bottom / 2, fill);
if (radius.BottomLeft > 0) {
ctx.LineTo (rect.Left + (radius.BottomLeft + border.Left / 2), rect.Bottom - border.Bottom / 2);
ctx.Arc (rect.Left + radius.BottomLeft + border.Left / 2, rect.Bottom - (radius.BottomLeft + border.Bottom / 2), radius.BottomLeft, 90, 180);
} else
ctx.LineTo (rect.Left + border.Left / 2, rect.Bottom - border.Bottom / 2);
} else
PathTo (ctx, rect.Left + border.Left / 2, rect.Bottom - border.Bottom / 2, fill);
if (border.Left > 0)
// TODO: round corners if top/bottom border disabled
ctx.LineTo (rect.Left + border.Left / 2, rect.Top + (border.Top > 0 ? radius.TopLeft : 0));
else
PathTo (ctx, rect.Left + border.Left / 2, rect.Top + (border.Top > 0 ? radius.TopLeft : 0), fill);
if (fill) {
ctx.SetColor (parent.innerColor);
ctx.Fill ();
} else {
ctx.SetColor (parent.borderColor);
ctx.SetLineWidth (parent.borderWidth);
ctx.Stroke ();
}
}示例7: OnDraw
protected override void OnDraw(Context ctx)
{
ctx.Translate (-hscroll.Value, -vscroll.Value);
ctx.Rectangle (new Rectangle (0, 0, imageSize, imageSize));
ctx.SetColor (Color.White);
ctx.Fill ();
ctx.Arc (imageSize / 2, imageSize / 2, imageSize / 2 - 20, 0, 360);
ctx.SetColor (new Color (0,0,1));
ctx.Fill ();
ctx.ResetTransform ();
ctx.Rectangle (0, 0, Bounds.Width, 30);
ctx.SetColor (new Color (1, 0, 0, 0.5));
ctx.Fill ();
}示例8: OnDraw
protected override void OnDraw(Context ctx, Rectangle dirtyRect)
{
base.OnDraw(ctx, dirtyRect);
if (image != null) {
if (Heighlighted && IsThumbnail) {
ctx.RoundRectangle(new Rectangle(Point.Zero, image.Size), 3);
ctx.SetColor(Colors.LightSteelBlue);
ctx.Fill();
}
ctx.DrawImage(image, (new Rectangle(Point.Zero, image.Size)).Inflate(-3, -3));
if (mask != null && ShowMask) {
ctx.DrawImage(MaskBitmap, (new Rectangle(Point.Zero, image.Size)).Inflate(-3, -3), 0.6);
}
}
if (isEditMode) {
Point scaleFactor = new Point(
scan.Size.Width / image.Size.Width,
scan.Size.Height / image.Size.Height);
ctx.SetColor(Mask.maskColor);
foreach (MaskEntry p in scan.Mask.MaskPositions) {
switch (p.type) {
case MaskEntryType.Point:
ctx.SetLineWidth(p.pointerSize / scaleFactor.Y * 2);
ctx.LineTo(p.position.X / scaleFactor.X, p.position.Y / scaleFactor.Y);
ctx.Stroke();
ctx.Arc(
p.position.X / scaleFactor.X, p.position.Y / scaleFactor.Y,
p.pointerSize / scaleFactor.Y, 0, 360);
ctx.Fill();
ctx.MoveTo(p.position.X / scaleFactor.X, p.position.Y / scaleFactor.Y);
break;
case MaskEntryType.Space:
ctx.Stroke();
ctx.ClosePath();
break;
case MaskEntryType.Delete:
ctx.Arc(
p.position.X / scaleFactor.X, p.position.Y / scaleFactor.Y,
p.pointerSize / scaleFactor.Y, 0, 360);
ctx.Save();
ctx.Clip();
int newX = (int) Math.Min(Math.Max(
p.position.X / scaleFactor.X - pointerSize / scaleFactor.Y, 0), scan.Size.Width);
int newY = (int) Math.Min(Math.Max(
p.position.Y / scaleFactor.Y - pointerSize / scaleFactor.Y, 0), scan.Size.Height);
using (ImageBuilder ib =
new ImageBuilder((pointerSize / scaleFactor.Y * 2), (pointerSize / scaleFactor.Y * 2))) {
BitmapImage bi = ib.ToBitmap();
image.WithBoxSize(image.Size).ToBitmap().CopyArea(
newX, newY,
(int) (pointerSize / scaleFactor.Y * 2), (int) (pointerSize / scaleFactor.Y * 2),
bi, 0, 0);
ctx.DrawImage(bi, new Point(newX, newY));
}
ctx.Restore();
ctx.ClosePath();
break;
}
}
ctx.Stroke();
if (mousePosition != Point.Zero) {
ctx.Arc(mousePosition.X, mousePosition.Y, pointerSize / Math.Max(scaleFactor.X, scaleFactor.Y), 0, 360);
ctx.Fill();
if (mousePositionStart != Point.Zero) {
ctx.SetLineWidth((pointerSize / Math.Max(scaleFactor.X, scaleFactor.Y)) * 2);
ctx.SetColor(Mask.maskColor);
ctx.Arc(mousePositionStart.X, mousePositionStart.Y, pointerSize / Math.Max(scaleFactor.X, scaleFactor.Y), 0, 360);
ctx.Fill();
ctx.MoveTo(mousePosition);
ctx.LineTo(mousePositionStart);
ctx.Stroke();
}
}
}
}示例9: DrawFocus
void DrawFocus(Context ctx, Point p)
{
// Draw a 'zoom'-style Focus at specified point
double focusRadius = 32;
double r = 12, w = focusRadius - 1;
Point o = Point.Zero; // Drawing origin
// Align single-thickness lines on 0.5 pixel coords
o.X += 0.5;
o.Y += 0.5;
ctx.Save ();
ctx.Translate (p); // Final translation
// Hairlines in X-direction
ctx.MoveTo (o.X + r, o.Y);
ctx.LineTo (o.X + w, o.Y);
ctx.MoveTo (o.X - r, o.Y);
ctx.LineTo (o.X - w, o.Y);
// Hairlines in Y-direction
ctx.MoveTo (o.X, o.Y + r);
ctx.LineTo (o.X, o.Y + w);
ctx.MoveTo (o.X, o.Y - r);
ctx.LineTo (o.X, o.Y - w);
// Inner single-thickness circle
ctx.MoveTo (o.X + r, o.Y);
ctx.Arc (o.X, o.Y, r, 0, 360);
ctx.SetColor (Colors.Black);
ctx.SetLineWidth (1);
ctx.Stroke ();
// Double thickness outer arcs. Draw at (0,0) and rotate
o = Point.Zero;
r = 22;
ctx.Rotate (5);
ctx.MoveTo (r, 0);
ctx.Arc (o.X, o.Y, r, 0, 80);
ctx.MoveTo (o.X, r);
ctx.Arc (o.X, o.Y, r, 90, 170);
ctx.MoveTo (-r, o.Y);
ctx.Arc (o.X, o.Y, r, 180, 260);
ctx.MoveTo (o.X, -r);
ctx.Arc (o.X, o.Y, r, 270, 350);
ctx.SetLineWidth (2);
ctx.Stroke ();
ctx.Restore ();
}示例10: Draw
/// <summary>
/// Draws the marker at the given position
/// </summary>
/// <param name="ctx">The Drawing Context with which to draw.</param>
/// <param name="x">The [physical] x position to draw the marker.</param>
/// <param name="y">The [physical] y position to draw the marker.</param>
public void Draw(Context ctx, double x, double y )
{
ctx.Save ();
ctx.SetLineWidth (lineWidth);
ctx.SetColor (lineColor);
switch (markerType) {
case MarkerType.Cross1:
ctx.MoveTo (x-h, y+h);
ctx.LineTo (x+h, y-h);
ctx.MoveTo (x+h, y+h);
ctx.LineTo (x-h, y-h);
ctx.Stroke ();
break;
case MarkerType.Cross2:
ctx.MoveTo (x, y-h);
ctx.LineTo (x, y+h);
ctx.MoveTo (x-h, y);
ctx.LineTo (x+h, y);
ctx.Stroke ();
break;
case MarkerType.Circle:
ctx.MoveTo (x+h,y);
ctx.Arc (x, y, h, 0, 360);
ctx.ClosePath ();
if (filled ) {
ctx.SetColor (fillColor);
ctx.FillPreserve ();
}
ctx.SetColor (lineColor);
ctx.Stroke ();
break;
case MarkerType.Square:
ctx.Rectangle (x-h, y-h, size, size);
ctx.ClosePath ();
if (filled) {
ctx.SetColor (fillColor);
ctx.FillPreserve ();
}
ctx.SetColor (lineColor);
ctx.Stroke ();
break;
case MarkerType.Triangle:
ctx.MoveTo (x-h, y+h);
ctx.LineTo (x, y-h);
ctx.LineTo (x+h, y+h);
ctx.ClosePath ();
if (filled) {
ctx.SetColor (fillColor);
ctx.FillPreserve ();
}
ctx.SetColor (lineColor);
ctx.Stroke ();
break;
case MarkerType.TriangleDown:
ctx.MoveTo (x-h, y-h);
ctx.LineTo (x, y+h);
ctx.LineTo (x+h, y-h);
ctx.ClosePath ();
if (filled) {
ctx.SetColor (fillColor);
ctx.FillPreserve ();
}
ctx.SetColor (lineColor);
ctx.Stroke ();
break;
case MarkerType.FilledCircle:
ctx.MoveTo (x+h,y);
ctx.Arc (x, y, h, 0, 360);
ctx.ClosePath ();
ctx.SetColor (fillColor);
ctx.FillPreserve ();
ctx.SetColor (lineColor);
ctx.Stroke ();
break;
case MarkerType.FilledSquare:
ctx.Rectangle (x-h, y-h, size, size);
ctx.ClosePath ();
ctx.SetColor (fillColor);
ctx.FillPreserve ();
ctx.SetColor (lineColor);
ctx.Stroke ();
break;
case MarkerType.FilledTriangle:
ctx.MoveTo (x-h, y+h);
ctx.LineTo (x, y-h);
//.........这里部分代码省略.........
示例11: DrawFocus
void DrawFocus( Context ctx, double x, double y )
{
if (!cursorVisible)
return;
double r = 16;
ctx.Save ();
x += 0.5;
y += 0.5;
ctx.SetLineWidth (3);
ctx.SetColor (new Color (0, 0, 0, 0.5));
ctx.Arc (x, y, r, 0, 360);
ctx.Stroke ();
ctx.SetLineWidth (1);
ctx.MoveTo (x+r, y);
ctx.RelLineTo (r, 0);
ctx.MoveTo (x-r, y);
ctx.RelLineTo (-r, 0);
ctx.MoveTo (x, y+r);
ctx.RelLineTo (0, r);
ctx.MoveTo (x, y-r);
ctx.RelLineTo (0, -r);
ctx.Stroke ();
r += 10;
ctx.Arc (x, y, r, 10, 80);
ctx.Stroke ();
ctx.Arc (x, y, r, 100, 170);
ctx.Stroke ();
ctx.Arc (x, y, r, 190, 260);
ctx.Stroke ();
ctx.Arc (x, y, r, 280, 350);
ctx.Stroke ();
ctx.Restore ();
}示例12: Draw
/// <summary>
/// Draw the marker.
/// </summary>
/// <param name="ctx">Context.</param>
public override void Draw(Context ctx)
{
ctx.SetColor(PipelineNode.NodeColorBorder);
Rectangle bndTmp = Bounds;
ctx.RoundRectangle(bndTmp.Inflate(-2, -2), 2);
if (compatible.IsFinal()) {
ctx.SetColor(Colors.LightGray);
} else {
ctx.RoundRectangle(bndTmp.Inflate(-1, -1), 3);
using (LinearGradient g = new LinearGradient(bndTmp.Left, bndTmp.Top, bndTmp.Right, bndTmp.Bottom)) {
g.AddColorStop(0, Colors.Black.BlendWith(NodeColor, 0.7));
g.AddColorStop(1, NodeColor);
ctx.Pattern = g;
ctx.Fill();
}
ctx.SetColor(NodeColor);
}
ctx.Fill();
if (IsInput) {
int inputBufferSize = inputData.Count;
List<Result> ihCopy;
lock (inputHistoryLock) {
ihCopy = new List<Result>(inputHistory);
}
foreach (Result input in ihCopy) {
if (input.IsUsed(parent)) {
inputBufferSize++;
} else {
lock (inputHistoryLock) {
inputHistory.Remove(input);
}
}
}
if (inputBufferSize > 0) {
bool sourceNodeIsAbove = true;
if (edges.Count > 0 && edges[0] != null) {
if (edges[0].to.Bounds.Center.Y > Bounds.Center.Y - 4.0) {
sourceNodeIsAbove = false;
}
}
textLayout.Text = inputBufferSize.ToString();
double textWidth = textLayout.GetSize().Width;
double textHeight = textLayout.GetSize().Height;
Point inputbufferSizeLocation =
Bounds.Location.Offset(
-24 -(textWidth/2),
sourceNodeIsAbove ? textHeight + 6 : -6 - textHeight);
ctx.Arc(
inputbufferSizeLocation.X + textWidth / 2,
inputbufferSizeLocation.Y + textHeight / 2,
Math.Max(textHeight, textWidth) / 2 + 1,
0, 360
);
ctx.Fill();
ctx.SetColor(PipelineNode.NodeColor);
ctx.DrawTextLayout(textLayout, inputbufferSizeLocation);
}
} else {
// if this is a final node
if (parent.algorithm.Output[positionNo].IsFinal()) {
ctx.MoveTo(bndTmp.Right + 4, bndTmp.Top);
ctx.LineTo(bndTmp.Right + 4, bndTmp.Bottom);
ctx.Stroke();
// draw output size on end nodes (= number of features
if (parent.results != null &&
parent.results.Count > 0 &&
parent.results[0].Item1 != null &&
parent.results[0].Item1.Length - 1 >= Position) {
textLayout.Text = parent.results.Count.ToString();
double textWidth = textLayout.GetSize().Width;
double textHeight = textLayout.GetSize().Height;
Point outputbufferSizeLocation =
Bounds.Location.Offset(Bounds.Width * 1.8, 0);
ctx.Arc(
outputbufferSizeLocation.X + textWidth / 2,
outputbufferSizeLocation.Y + textHeight / 2,
Math.Max(textHeight, textWidth) / 2 + 1,
0, 360
);
ctx.Fill();
ctx.SetColor(PipelineNode.NodeColor);
ctx.DrawTextLayout(textLayout, outputbufferSizeLocation);
}
}
}
//.........这里部分代码省略.........
示例13: DrawFocus
void DrawFocus(Context ctx, Point p)
{
// Draw a 'zoom'-style Focus at specified point.
// Following values draw at (0,0) with Size (64,64)
double r1 = 12, r2 = 22, w = 31;
Point o = Point.Zero; // Drawing origin
// Align single-thickness lines on 0.5 pixel coords
o.X += 0.5;
o.Y += 0.5;
ctx.Save ();
ctx.SetColor (Colors.Black);
ctx.SetLineWidth (1);
ctx.Translate (p); // Final translation to point p
// draw as 4 quadrants, each rotated by +90 degrees
for (double theta = 0; theta < 300; theta += 90) {
ctx.Rotate (theta);
// Hairline in X-direction, ending at x=r1
ctx.MoveTo (o.X + w, o.Y);
ctx.LineTo (o.X + r1, o.Y);
// Inner single-thickness arc
ctx.Arc (o.X, o.Y, r1, 0, 90);
ctx.Stroke ();
// Double thickness outer arc, 10 - 80 degrees. Draw at (0,0) and rotate
ctx.Save ();
ctx.Rotate (10);
ctx.MoveTo (r2, 0);
ctx.Arc (0, 0, r2, 0, 70);
ctx.SetLineWidth (2);
ctx.Stroke ();
ctx.Restore ();
}
ctx.Restore ();
}