public void DrawBacks(SKCanvas canvas, SKRect rect_Card)
{
canvas.DrawRoundRect(rect_Card, 6, 6, _blackPaint);
if (MainGraphics !.IsSelected == true)
{
canvas.DrawRoundRect(rect_Card, 6, 6, _aquaBorder);
}
public void DrawDice(SKCanvas dc)
{
if (Visible == false)
{
return; //just in case.
}
if (CanStartDrawing() == false)
{
return;
}
dc.Clear();
SKRect rect_Card;
rect_Card = SKRect.Create(0, 0, ActualWidthHeight, ActualWidthHeight); //i think
dc.DrawRoundRect(rect_Card, RoundedRadius, RoundedRadius, _fillPaint);
if (IsSelected == true)
{
dc.DrawRoundRect(rect_Card, RoundedRadius, RoundedRadius, _selectPaint);
}
dc.DrawRoundRect(rect_Card, RoundedRadius, RoundedRadius, _borderPaint);
var fontSize = rect_Card.Height * .5f;
SKPaint textPaint = MiscHelpers.GetTextPaint(SKColors.White, fontSize);
dc.DrawBorderText(Value, EnumLayoutOptions.Center, EnumLayoutOptions.Center, textPaint, _textBorder !, rect_Card);
}
/* Method to create the underlying empty bar for nutritional visualizations
* Called for each base cell of each nutrient
*/
private void DrawBaseVisual(SKPaintSurfaceEventArgs e)
{
SKCanvas canvas = e.Surface.Canvas;
using (SKPaint paint = new SKPaint())
{
canvas.Clear(BASEBACKGROUND);
var HORIZONTALPADDING = 30f;
var VERTICALPADDING = 15f;
var width = e.Info.Width - 2 * HORIZONTALPADDING;
var height = e.Info.Height - 2 * VERTICALPADDING;
// The black outline to the visualize bar
paint.Color = Color.Black.ToSKColor();
canvas.DrawRoundRect(new SKRoundRect(new SKRect(HORIZONTALPADDING - 19, VERTICALPADDING - 4, width + HORIZONTALPADDING + 19, height + VERTICALPADDING + 4), 15f, 15f), paint);
// The left rounded edge of the nutrition visual
// Starts Red to indicate that it could fill up
SKRoundRect firstRound = new SKRoundRect(new SKRect(HORIZONTALPADDING - 15f, VERTICALPADDING, HORIZONTALPADDING + 15f, height + VERTICALPADDING), 15f, 15f);
paint.Color = Color.Red.ToSKColor();
canvas.DrawRoundRect(firstRound, paint);
// The right rounded edge
SKRoundRect secondRound = new SKRoundRect(new SKRect(width + 15f, VERTICALPADDING, width + 45f, height + VERTICALPADDING), 15f, 15f);
paint.Color = LIGHTRED;
canvas.DrawRoundRect(secondRound, paint);
// Rectangle for consumed DRI 0 tp Min Threshold
SKRect firstRect = new SKRect(HORIZONTALPADDING, VERTICALPADDING, (width / 10) + HORIZONTALPADDING, height + VERTICALPADDING);
paint.Color = LIGHTRED;
canvas.DrawRect(firstRect, paint);
// Rectangle for consumed DRI from Min Threshold to half way between Min and DRI
SKRect secRect = new SKRect((width / 10) + HORIZONTALPADDING, VERTICALPADDING, (width / 10) * 3 + HORIZONTALPADDING, height + VERTICALPADDING);
paint.Color = LIGHTYELLOW;
canvas.DrawRect(secRect, paint);
// Rectangle for consumed DRI from
// half way between low thresh and DRI to half way from DRI to max threshhold
SKRect thirdRect = new SKRect((width / 10) * 3 + HORIZONTALPADDING, VERTICALPADDING, (width / 10) * 7 + HORIZONTALPADDING, height + VERTICALPADDING);
paint.Color = LIGHTGREEN;
canvas.DrawRect(thirdRect, paint);
// Rectangle for consumed DRI from
// halfway between DRI and max threshhold to max threshold
SKRect fourRect = new SKRect((width / 10) * 7 + HORIZONTALPADDING, VERTICALPADDING, (width / 10) * 9 + HORIZONTALPADDING, height + VERTICALPADDING);
paint.Color = LIGHTYELLOW;
canvas.DrawRect(fourRect, paint);
// Rectangle for consumed DRI from max threshold to twice the regular DRI
SKRect fiveRect = new SKRect(((width / 10) * 9) + HORIZONTALPADDING, VERTICALPADDING, width + HORIZONTALPADDING, height + VERTICALPADDING);
paint.Color = LIGHTRED;
canvas.DrawRect(fiveRect, paint);
}
}
public void DrawRoundRect(SKRoundRect rect, SKPaint paint)
{
canvas.DrawRoundRect(rect, paint);
if (calculateBounds)
{
displayObject.addBoundingRect(rect.Rect);
}
}
public void DrawRoundRectangle(Color color, float penWidth, RectangleF rect, float rx, float ry)
{
skPaint.Color = new SKColor((uint)color.Value);
skPaint.Style = SKPaintStyle.Stroke;
skPaint.StrokeWidth = penWidth;
skPaint.IsAntialias = true;
var r = Convert(rect);
skCanvas.DrawRoundRect(r, rx, ry, skPaint);
}
public void DrawLoginButton(SKCanvas canvas)
{
// Draw Round Rectangle shape
VeryBerryFillPaint.Shader = SKShader.CreateLinearGradient(new SKPoint(94.86246f, 11.37462f), new SKPoint(92.07168f, 69.92178f), BerryBlastColors, BerryBlastWeights, SKShaderTileMode.Clamp);
canvas.DrawRoundRect(new SKRect(8.925781f, 9.203125f, 192.2227f, 72.65234f), 32f, 32f, VeryBerryFillPaint);
canvas.DrawRoundRect(new SKRect(8.925781f, 9.203125f, 192.2227f, 72.65234f), 32f, 32f, VeryBerryFramePaint);
// Draw Text shape
canvas.DrawText("Login", 100.0859f, 48.83594f, CustomFillPaint);
}
void OnCanvasViewPaintSurface(object sender, SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
string str = "Hello SkiaSharp!";
// Create an SKPaint object to display the text
SKPaint textPaint = new SKPaint
{
Color = SKColors.Chocolate
};
// Adjust TextSize property so text is 90% of screen width
float textWidth = textPaint.MeasureText(str);
textPaint.TextSize = 0.9f * info.Width * textPaint.TextSize / textWidth;
// Find the text bounds
SKRect textBounds;
textPaint.MeasureText(str, ref textBounds);
// Calculate offsets to center the text on the screen
float xText = info.Width / 2 - textBounds.MidX;
float yText = info.Height / 2 - textBounds.MidY;
// And draw the text
canvas.DrawText(str, xText, yText, textPaint);
// Create a new SKRect object for the frame around the text
SKRect frameRect = textBounds;
frameRect.Offset(xText, yText);
frameRect.Inflate(10, 10);
// Create an SKPaint object to display the frame
SKPaint framePaint = new SKPaint
{
Style = SKPaintStyle.Stroke,
StrokeWidth = 5,
Color = SKColors.Blue
};
// Draw one frame
canvas.DrawRoundRect(frameRect, 20, 20, framePaint);
// Inflate the frameRect and draw another
frameRect.Inflate(10, 10);
framePaint.Color = SKColors.DarkBlue;
canvas.DrawRoundRect(frameRect, 30, 30, framePaint);
}
public void DrawDay(SKCanvas canvas, int width, int height, List <IAvailableTime> AvailabelToDay,
List <IReservation <ReserveTime> > ReservatToDay, Guid GuidForOwnerResv)
{
var PixPrMin = height / (24 * 60f);
Box.Color = SKColors.LightGray;
foreach (var availableTime in AvailabelToDay)
{
var theDay = new DateTime(availableTime.From.Year, availableTime.From.Month, availableTime.From.Day, 0,
0, 0);
var yTop = (float)availableTime.From.TimeOfDay.TotalMinutes * PixPrMin;
var yBotton = (float)availableTime.To.TimeOfDay.TotalMinutes * PixPrMin;
canvas.DrawRect(new SKRect(0, yTop, width, yBotton), Box);
if (yBotton - yTop > 25)
{
canvas.DrawText(availableTime.From.TimeOfDay.ToString("hh':'mm"), 5, yTop + 24, Text);
}
canvas.DrawText(availableTime.To.TimeOfDay.ToString("hh':'mm"), 5, yBotton + 24, Text);
}
canvas.Save();
foreach (var resrvation in ReservatToDay)
{
if (resrvation.UserId.Equals(GuidForOwnerResv))
{
Box.Color = SKColors.CadetBlue;
}
else
{
Box.Color = SKColors.LightGray;
}
IReserveTime reserveTime = resrvation.Timeslot;
var yTop = (float)reserveTime.FromDate.TimeOfDay.TotalMinutes * PixPrMin;
var yBottum = (float)reserveTime.ToDate.TimeOfDay.TotalMinutes * PixPrMin;
var Boxen = new SKRect(0, yTop, width - 1, yBottum);
canvas.DrawRoundRect(Boxen, xRounding, yRounding, Box);
canvas.DrawRoundRect(Boxen, xRounding, yRounding, Outlinje);
canvas.DrawRoundRect(Boxen.Left + 1, Boxen.Top + 1, Boxen.Width - 2, Boxen.Height - 2, xRounding,
yRounding, Outlinje);
canvas.DrawRoundRect(Boxen.Left + 2, Boxen.Top + 2, Boxen.Width - 4, Boxen.Height - 4, xRounding,
yRounding, Outlinje);
if (Boxen.Height > 25)
{
canvas.DrawText(reserveTime.FromDate.TimeOfDay.ToString("hh':'mm"), Boxen.Left + 5, Boxen.Top + 24,
Text);
}
canvas.DrawText(reserveTime.ToDate.TimeOfDay.ToString("hh':'mm"), Boxen.Left + 5, Boxen.Bottom + 24,
Text);
}
canvas.Restore();
}
public static void DrawCard(SKCanvas cv, Card c)
{
if (cardWhitePaint == null)
{
cardWhitePaint = new SKPaint
{
Color = SKColors.WhiteSmoke,
TextSize = 10
};
cardBlackPaint = new SKPaint
{
Color = SKColors.Black,
TextSize = 10
};
cardShadowPaint = new SKPaint
{
Color = SKColors.Gray,
BlendMode = SKBlendMode.Multiply
};
}
SKPaint bgPaint, fgPaint;
if (c.Type == CardType.Black)
{
bgPaint = cardWhitePaint;
fgPaint = cardBlackPaint;
}
else
{
bgPaint = cardBlackPaint;
fgPaint = cardWhitePaint;
}
cv.DrawRoundRect(2 - 3, 2 - 3, 2 + 106, 2 + 106, 10, 10, cardShadowPaint);
cv.DrawRoundRect(-3, -3, 106, 106, 10, 10, fgPaint);
cv.DrawRoundRect(0, 0, 100, 100, 7, 7, bgPaint);
int curChar = 0;
float curY = 8 + fgPaint.FontSpacing;
while (curChar < c.Text.Length)
{
float w;
int cnt = (int)fgPaint.BreakText(c.Text.Substring(curChar).Trim(), 90, out w);
bool breaking = (curChar + cnt) < c.Text.Length;
string text = c.Text.Substring(curChar, cnt).TrimStart();
if (!text.EndsWith(" ") && breaking)
{
text += "-";
}
cv.DrawText(text, 8, curY, fgPaint);
curChar += cnt;
curY += fgPaint.FontSpacing;
}
}
protected override void InternalDraw(SKCanvas canvas)
{
base.InternalDraw(canvas);
using (var paint = new SKPaint())
{
paint.IsAntialias = true;
if (HasShadow)
{
using (var filter = SKMaskFilter.CreateBlur(SKBlurStyle.Normal, 2.0f))
{
paint.MaskFilter = filter;
paint.Color = Color.Gray.ToSKColor();
switch (Shape)
{
case MycoShapes.Rectangle:
canvas.DrawRect(RenderBounds.ToSKRect(), paint);
break;
case MycoShapes.RoundedRectangle:
canvas.DrawRoundRect(RenderBounds.ToSKRect(), RoundedRectRadius, RoundedRectRadius, paint);
break;
case MycoShapes.Oval:
canvas.DrawOval(RenderBounds.ToSKRect(), paint);
break;
}
paint.MaskFilter = null;
}
}
paint.Color = ShapeColor.ToSKColor();
switch (Shape)
{
case MycoShapes.Rectangle:
canvas.DrawRect(RenderBounds.ToSKRect(), paint);
break;
case MycoShapes.RoundedRectangle:
canvas.DrawRoundRect(RenderBounds.ToSKRect(), RoundedRectRadius, RoundedRectRadius, paint);
break;
case MycoShapes.Oval:
canvas.DrawOval(RenderBounds.ToSKRect(), paint);
break;
}
}
}
protected void OnDrawSample(SKCanvas canvas, int width, int height)
{
var length = Math.Min(width / 6, height / 6);
var rect = new SKRect(-length, -length, length, length);
var side = rotationMatrix.MapPoint(new SKPoint(1, 0)).X > 0;
canvas.Clear(SampleMedia.Colors.XamarinLightBlue);
// first do 2D translation to the center of the screen
canvas.Translate(width / 2, height / 2);
// then apply the 3D rotation
var matrix = rotationMatrix.Matrix;
canvas.Concat(ref matrix);
var paint = new SKPaint
{
Color = side ? SampleMedia.Colors.XamarinPurple : SampleMedia.Colors.XamarinGreen,
Style = SKPaintStyle.Fill,
IsAntialias = true
};
canvas.DrawRoundRect(rect, 30, 30, paint);
var shadow = SKShader.CreateLinearGradient(
new SKPoint(0, 0), new SKPoint(0, length * 2),
new[] { paint.Color.WithAlpha(127), paint.Color.WithAlpha(0) },
null,
SKShaderTileMode.Clamp);
paint = new SKPaint
{
Shader = shadow,
Style = SKPaintStyle.Fill,
IsAntialias = true
};
rect.Offset(0, length * 2 + 5);
canvas.DrawRoundRect(rect, 30, 30, paint);
Log.Debug("Demo", "Enter");
if (cnt == 0)
{
Log.Debug("Demo", "Enter");
InitEvent();
}
}
public override void OnCanvasViewPaintSurface(SKPaintSurfaceEventArgs e)
{
SKImageInfo imageInfo = e.Info;
SKSurface surface = e.Surface;
SKCanvas canvas = surface.Canvas;
if (isDead())
{
SKPoint rotatePoint = new SKPoint(rect.MidX, rect.MidY);
canvas.RotateDegrees(deathAnimation, rotatePoint.X, rotatePoint.Y);
canvas.DrawBitmap(getBitmap(), getRectangle(), paint);
canvas.RotateDegrees(-deathAnimation, rotatePoint.X, rotatePoint.Y);
deathAnimation += 15;
ySpeed += 0.2;
}
else
{
canvas.DrawBitmap(sprites[resID], getRectangle(), paint);
//Draw health-bar
int separate = 20;
var paintMargin = new SKPaint
{
Style = SKPaintStyle.Stroke,
Color = SKColors.Black
};
var paintHP = new SKPaint
{
Style = SKPaintStyle.Fill,
Color = SKColors.IndianRed
};
var paintFillWhite = new SKPaint
{
Style = SKPaintStyle.Fill,
Color = SKColors.White
};
float hp = -((activity.getImageInfo().Width - separate) - (activity.getImageInfo().Width / 2 + separate)) * ((10 - (float)getHealth()) / 10);
SKRect margin = new SKRect(activity.getImageInfo().Width / 2 + separate, activity.getImageInfo().Height - separate * 2, activity.getImageInfo().Width - separate, activity.getImageInfo().Height - separate);
SKRect fill = new SKRect(activity.getImageInfo().Width / 2 + separate, activity.getImageInfo().Height - separate * 2, activity.getImageInfo().Width - separate + (int)hp, activity.getImageInfo().Height - separate);
canvas.DrawRoundRect(margin, 5, 5, paintFillWhite);
canvas.DrawRoundRect(fill, 5, 5, paintHP);
canvas.DrawRoundRect(margin, 5, 5, paintMargin);
}
}
private void DrawWild(SKCanvas thisCanvas, SKRect rect_Card)
{
var tempRect = GetStartingRect(rect_Card);
thisCanvas.DrawRect(tempRect, GetColorUsed()); // i think
var otherRect = GetCenterDiceRect();
var tempSize = MainGraphics !.GetFontSize(3);
thisCanvas.DrawRoundRect(otherRect, tempSize, tempSize, _whitePaint);
thisCanvas.DrawRoundRect(otherRect, tempSize, tempSize, _thickBorder);
var fontSize = otherRect.Height * 0.38f; // can adjust as needed
var textPaint = MiscHelpers.GetTextPaint(SKColors.Black, fontSize);
thisCanvas.DrawCustomText("WILD", TextExtensions.EnumLayoutOptions.Center, TextExtensions.EnumLayoutOptions.Center, textPaint, otherRect, out _);
}
public void DrawRectangle(Pen pen, Rect rect, float cornerRadius = 0)
{
using (var paint = CreatePaint(pen, rect.Size))
{
var rc = rect.ToSKRect();
if (cornerRadius == 0)
{
Canvas.DrawRect(rc, paint.Paint);
}
else
{
Canvas.DrawRoundRect(rc, cornerRadius, cornerRadius, paint.Paint);
}
}
}
public void DrawImage(SKCanvas ThisCanvas, float Width, float Height) // i think this is it.
{
var ThisRect = SKRect.Create(0, 0, Width, Height);
ThisCanvas.Clear();
ThisCanvas.DrawBitmap(_img_LilyPad, ThisRect, _bitPaint);
if (HasFrog == true)
{
ThisCanvas.DrawBitmap(_img_Frog, ThisRect, _bitPaint);
}
SKPaint?ThisPaint = null;
if (IsSelected == true)
{
ThisPaint = MiscHelpers.GetStrokePaint(SKColors.Red, Width / 30);
}
else if (IsTarget == true)
{
ThisPaint = MiscHelpers.GetStrokePaint(SKColors.Lime, Width / 10);
float[] Ins;
Ins = new float[2];
Ins[0] = Width / 20;
Ins[1] = Width / 20;
ThisPaint.PathEffect = SKPathEffect.CreateDash(Ins, 1); // not sure
}
if (IsSelected == true || IsTarget == true)
{
ThisCanvas.DrawRoundRect(ThisRect, Width / 10, Width / 10, ThisPaint);
}
}
private static void DrawHyperlink(SKCanvas canvas, double screenWidth, double screenHeight, Hyperlink textBox)
{
if (textBox.Text == null)
{
return; // todo: fix this for widgets without text
}
var textPaint = new SKPaint {
Color = textBox.TextColor.ToSkia(), IsAntialias = true
};
var backPaint = new SKPaint {
Color = textBox.BackColor.ToSkia(),
};
// The textRect has an offset which can be confusing.
// This is because DrawText's origin is the baseline of the text, not the bottom.
// Read more here: https://developer.xamarin.com/guides/xamarin-forms/advanced/skiasharp/basics/text/
var textRect = new SKRect();
textPaint.MeasureText(textBox.Text, ref textRect);
// The backRect is straight forward. It is leading for our purpose.
var backRect = new SKRect(0, 0,
textRect.Width + textBox.PaddingX * 2,
textPaint.TextSize + textBox.PaddingY * 2); // Use the font's TextSize for consistency
var offsetX = GetOffsetX(backRect.Width, textBox.MarginX, textBox.HorizontalAlignment, screenWidth);
var offsetY = GetOffsetY(backRect.Height, textBox.MarginY, textBox.VerticalAlignment, screenHeight);
backRect.Offset(offsetX, offsetY);
canvas.DrawRoundRect(backRect, textBox.CornerRadius, textBox.CornerRadius, backPaint);
textBox.Envelope = backRect.ToMapsui();
// To position the text within the backRect correct using the textRect's offset.
canvas.DrawText(textBox.Text,
offsetX - textRect.Left + textBox.PaddingX,
offsetY - textRect.Top + textBox.PaddingY, textPaint);
}
private void DrawTooltip(SKCanvas canvas, ChartEntry entry)
{
using (var textPaint = new SKPaint
{
Style = SKPaintStyle.StrokeAndFill,
Color = TooltipTextColor,
TextAlign = SKTextAlign.Center,
TextSize = TooltipTextSize
})
{
var topBottomMargin = TooltipTextSize;
var tooltipTextYPosition = _tooltipPoint.Y - TooltipYOffset - topBottomMargin;
var textPath = textPaint.GetTextPath(entry.Label, _tooltipPoint.X, tooltipTextYPosition);
using (var tooltipBackgroundPaint = new SKPaint
{
Style = SKPaintStyle.StrokeAndFill,
Color = TooltipBackgroundColor
})
{
var leftRightMargin = TooltipTextSize / 2;
canvas.DrawRoundRect(new SKRect(textPath.Bounds.Left - leftRightMargin, textPath.Bounds.Top - topBottomMargin, textPath.Bounds.Right + leftRightMargin, textPath.Bounds.Bottom + topBottomMargin), TooltipRadius, TooltipRadius, tooltipBackgroundPaint);
}
canvas.DrawText(entry.Label, _tooltipPoint.X, tooltipTextYPosition, textPaint);
}
}
void OnCanvasViewPaintSurface(object sender, SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
using (SKPaint strokePaint = new SKPaint
{
Style = SKPaintStyle.Stroke,
Color = SKColors.Red,
StrokeWidth = 3,
PathEffect = SKPathEffect.CreateDash(new float[] { 7, 7 }, 0)
})
using (SKPaint textPaint = new SKPaint
{
Style = SKPaintStyle.Fill,
Color = SKColors.Blue,
TextSize = 50
})
{
canvas.Scale((float)xScaleSlider.Value,
(float)yScaleSlider.Value);
SKRect textBounds = new SKRect();
textPaint.MeasureText(Title, ref textBounds);
float margin = 10;
SKRect borderRect = SKRect.Create(new SKPoint(margin, margin), textBounds.Size);
canvas.DrawRoundRect(borderRect, 20, 20, strokePaint);
canvas.DrawText(Title, margin, -textBounds.Top + margin, textPaint);
}
}
SKRoundRect makeBox(SKImageInfo info, SKCanvas canvas, TypeShadow typeShadow, float x, float y, Color color, Color backgroundColor)
{
SKPaint skPaint = new SKPaint()
{
Style = SKPaintStyle.Fill,
Color = backgroundColor.ToSKColor(),
//StrokeWidth = 20,
IsAntialias = true,
};
SKRect skRectangle = new SKRect();
if (!ShowOut)
{
skRectangle.Size = new SKSize(info.Width, info.Height);
skRectangle.Location = new SKPoint(0, 0);
}
else
{
skRectangle.Size = new SKSize(info.Width - (SizeShadow * 2), info.Height - (SizeShadow * 2));
skRectangle.Location = new SKPoint(SizeShadow, SizeShadow);
}
var mask = new SKRoundRect(skRectangle, BorderRadius, BorderRadius);
canvas.DrawRoundRect(skRectangle, BorderRadius, BorderRadius, skPaint);
//canvas.ClipRoundRect(mask, SKClipOperation.Difference);
return(mask);
}
private void SKCanvasView_PaintSurface(object sender, SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
using (SKPaint paint = new SKPaint())
{
// define the color for the shadow
SKColor shadowColor = Color.FromHex("#000000").ToSKColor();
paint.IsDither = true;
paint.IsAntialias = true;
paint.Color = shadowColor;
// create filter for drop shadow
paint.ImageFilter = SKImageFilter.CreateDropShadowOnly(
dx: 0, dy: 0,
sigmaX: 40, sigmaY: 40,
color: shadowColor);
// define where I want to draw the object
var corner = info.Width / 2;
var shadowBounds = new SKRect(65, 65, 460, 460);
canvas.DrawRoundRect(shadowBounds, corner, corner, paint);
}
}
void makeInnerShadow(SKImageInfo info, SKCanvas canvas, TypeShadow typeShadow, float x, float y, Color color, Color backgroundColor)
{
SKPaint skPaint = new SKPaint()
{
Style = SKPaintStyle.Stroke,
Color = color.ToSKColor().WithAlpha((byte)(0xFF * OpacityShadow)),
StrokeWidth = SizeStroker,
IsAntialias = true,
ImageFilter = SKImageFilter.CreateDropShadow(
x,
y,
SizeStroker,
SizeStroker,
color.ToSKColor().WithAlpha((byte)(0xFF * OpacityShadow)),
SKDropShadowImageFilterShadowMode.DrawShadowAndForeground)
};
SKRect skRectangle = new SKRect();
if (!ShowOut)
{
skRectangle.Size = new SKSize(info.Width, info.Height);
skRectangle.Location = new SKPoint(0, 0);
}
else
{
skRectangle.Size = new SKSize(info.Width - (SizeShadow * 2), info.Height - (SizeShadow * 2));
skRectangle.Location = new SKPoint(SizeShadow, SizeShadow);
}
skRectangle.Inflate(SizeStroker, SizeStroker);
canvas.DrawRoundRect(skRectangle, BorderRadius, BorderRadius, skPaint);
}
void makeShadow(SKImageInfo info, SKCanvas canvas, TypeShadow typeShadow, float x, float y, Color color, Color backgroundColor)
{
SKPaint skPaint = new SKPaint()
{
Style = SKPaintStyle.Fill,
Color = backgroundColor.ToSKColor(),
//StrokeWidth = 1,
IsAntialias = true,
ImageFilter = SKImageFilter.CreateDropShadow(
x,
y,
SizeStroker,
SizeStroker,
color.ToSKColor().WithAlpha((byte)(0xFF * OpacityShadow)),
SKDropShadowImageFilterShadowMode.DrawShadowAndForeground)
};
var auxSize = SizeShadow;
SKRect skRectangle = new SKRect();
skRectangle.Size = new SKSize(info.Width - (auxSize * 2), info.Height - (auxSize * 2));
skRectangle.Location = new SKPoint(auxSize, auxSize);
canvas.DrawRoundRect(skRectangle, BorderRadius, BorderRadius, skPaint);
}
public void Draw(SKCanvas canvas, IReadOnlyViewport viewport, IWidget widget, float layerOpacity)
{
var hyperlink = (Hyperlink)widget;
if (string.IsNullOrEmpty(hyperlink.Text))
{
return;
}
using var textPaint = new SKPaint { Color = hyperlink.TextColor.ToSkia(layerOpacity), IsAntialias = true };
using var backPaint = new SKPaint { Color = hyperlink.BackColor.ToSkia(layerOpacity) };
// The textRect has an offset which can be confusing.
// This is because DrawText's origin is the baseline of the text, not the bottom.
// Read more here: https://developer.xamarin.com/guides/xamarin-forms/advanced/skiasharp/basics/text/
var textRect = new SKRect();
textPaint.MeasureText(hyperlink.Text, ref textRect);
// The backRect is straight forward. It is leading for our purpose.
var backRect = new SKRect(0, 0,
textRect.Width + hyperlink.PaddingX * 2,
textPaint.TextSize + hyperlink.PaddingY * 2); // Use the font's TextSize for consistency
var offsetX = GetOffsetX(backRect.Width, hyperlink.MarginX, hyperlink.HorizontalAlignment, viewport.Width);
var offsetY = GetOffsetY(backRect.Height, hyperlink.MarginY, hyperlink.VerticalAlignment, viewport.Height);
backRect.Offset(offsetX, offsetY);
canvas.DrawRoundRect(backRect, hyperlink.CornerRadius, hyperlink.CornerRadius, backPaint);
hyperlink.Envelope = backRect.ToMRect();
// To position the text within the backRect correct using the textRect's offset.
canvas.DrawText(hyperlink.Text,
offsetX - textRect.Left + hyperlink.PaddingX,
offsetY - textRect.Top + hyperlink.PaddingY, textPaint);
}
private void CarouselGradient_PaintSurface(object sender, SkiaSharp.Views.Forms.SKPaintSurfaceEventArgs e)
{
SKImageInfo info = e.Info;
SKSurface surface = e.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
// get the brush based on the theme
SKColor gradientStart = ((Color)Application.Current.Resources["CarouselGradientStartColor"]).ToSKColor();
SKColor gradientMid = ((Color)Application.Current.Resources["CarouselGradientMidColor"]).ToSKColor();
SKColor gradientEnd = ((Color)Application.Current.Resources["CarouselGradientEndColor"]).ToSKColor();
// gradient background with 3 colors
backgroundBrush.Shader = SKShader.CreateLinearGradient(
new SKPoint(0, 0),
new SKPoint(info.Width, info.Height),
new SKColor[] { gradientStart, gradientMid, gradientEnd },
new float[] { 0, .5f, 1 },
SKShaderTileMode.Clamp);
SKRect backgroundBounds = new SKRect(0, 0, info.Width, info.Height);
canvas.DrawRoundRect(new SKRoundRect(backgroundBounds, 60, 60), backgroundBrush);
}
protected override void OnPaintSurface(SKPaintSurfaceEventArgs args)
{
base.OnPaintSurface(args);
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
canvas.Save();
using (SKPaint paint = new SKPaint())
{
// Set SKPaint properties
paint.Color = SKColors.White;
paint.ImageFilter = SKImageFilter.CreateDropShadow(
OffsetX,
OffsetY,
BlurX,
BlurY,
ShadowColor.ToSKColor(),
SKDropShadowImageFilterShadowMode.DrawShadowAndForeground);
canvas.DrawRoundRect(new SKRect(20f, 20f, info.Width - 20, info.Height - 20), Radius, Radius, paint);
canvas.Restore();
}
}
protected override void OnPaintSurface(SKPaintSurfaceEventArgs e)
{
base.OnPaintSurface(e);
SKRoundRect skRoundRect = new SKRoundRect(e.Info.Rect, myRoundRadius);
SKSurface surface = e.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear(myBackgroundColor);
SKPaint paint = new SKPaint
{
Style = SKPaintStyle.Fill,
TextSize = 48,
StrokeWidth = myCircleStrokeWidth,
IsAntialias = true
};
paint.Style = SKPaintStyle.Fill;
paint.Color = myColor1;
paint.Shader = SKShader.CreateLinearGradient(
new SKPoint(skRoundRect.Rect.Left, skRoundRect.Rect.Top),
new SKPoint(skRoundRect.Rect.Right, skRoundRect.Rect.Bottom),
new SKColor[] { myColor1, myColor2 },
new float[] { 0, 1f },
SKShaderTileMode.Repeat);
canvas.DrawRoundRect(skRoundRect, paint);
}
private void Paint_RoundRect_withoutBorder(object sender, SkiaSharp.Views.Forms.SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
using (SKPaint paint = new SKPaint())
{
var radius = info.Height / 2;
SKRect rect;
//half of the strokewidth to get border inside is added to left-top and subtracted from bottom-right
rect = new SKRect(info.Rect.Left, info.Rect.Top, info.Rect.Right, info.Rect.Bottom);
SKColor borderColor = ((Color)Application.Current.Resources["ButtonBackgroundColor"]).ToSKColor();
paint.Color = borderColor;
//paint.StrokeWidth = 5;
//paint.Style = SKPaintStyle.Stroke;
paint.IsAntialias = true;
paint.Style = SKPaintStyle.Fill;
canvas.DrawRoundRect(rect, radius, radius, paint);
//canvas.DrawColor(borderColor, SKBlendMode.ColorDodge);
}
}
private void SKCanvasView_PaintSurface(object sender, SkiaSharp.Views.Forms.SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
using (SKPaint paint = new SKPaint())
{
// define the color for the shadow
SKColor shadowColor = ((Color)Application.Current.Resources["ButtonBackgroundColor"]).ToSKColor();
paint.IsDither = true;
paint.IsAntialias = true;
paint.Color = shadowColor;
// create filter for drop shadow
paint.ImageFilter = SKImageFilter.CreateDropShadow(
dx: 0, dy: 0,
sigmaX: 40, sigmaY: 40,
color: shadowColor,
shadowMode: SKDropShadowImageFilterShadowMode.DrawShadowOnly);
// define where I want to draw the object
var margin = info.Width / 10;
var shadowBounds = new SKRect(margin, -40, info.Width - margin, 10);
canvas.DrawRoundRect(shadowBounds, 10, 10, paint);
}
}
private void OnCanvasViewPaintSurface(object sender, SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
string str = "Hello SkiaSharp!";
// crea un SKPaint oggetto per visualizzare il testo
SKPaint textPaint = new SKPaint
{
Color = SKColors.Chocolate
};
// regola la proprietà TextSize in modo che il testo sia 90% della larghezza dello schermo
float textWidth = textPaint.MeasureText(str);
textPaint.TextSize = 0.9f * info.Width * textPaint.TextSize / textWidth;
// trovare i limiti del testo
SKRect textBounds = new SKRect();
textPaint.MeasureText(str, ref textBounds);
// calcola gli offset per centrare il testo sullo schermo
float xText = info.Width / 2 - textBounds.MidX;
float yText = info.Height / 2 - textBounds.MidY;
// e disegna il testo
canvas.DrawText(str, xText, yText, textPaint);
// crea un nuovo skRect oggetto per la cornice intorno al testo
SKRect frameRect = textBounds;
frameRect.Offset(xText, yText);
frameRect.Inflate(10, 10);
// crea un SKPaint oggetto per visualizzare il frame
SKPaint framePaint = new SKPaint
{
Style = SKPaintStyle.Stroke,
StrokeWidth = 5,
Color = SKColors.Blue
};
// disegna un frame
canvas.DrawRoundRect(frameRect, 20, 20, framePaint);
// gonfiare il frameRect e disegnarne un altro
frameRect.Inflate(10, 10);
framePaint.Color = SKColors.DarkBlue;
canvas.DrawRoundRect(frameRect, 30, 30, framePaint);
}
private static void MeasureText(SKImageInfo info, SKCanvas canvas)
{
string str = "SkiaSharp Demo";
SKRect textBounds = new SKRect();
float xText;
float yText;
using (SKPaint textPaint = new SKPaint()
{
Color = SKColors.Chocolate
})
{
float textWidth = textPaint.MeasureText(str);
textPaint.TextSize = 0.9f * info.Width * textPaint.TextSize / textWidth;
// Find the text bounds
textPaint.MeasureText(str, ref textBounds);
// Calculate offsets to center the text on the screen
xText = info.Width / 2 - textBounds.MidX;
yText = info.Height / 2 - textBounds.MidY;
// And draw the text
canvas.DrawText(str, xText, yText, textPaint);
}
using (SKPaint framePaint = new SKPaint()
{
Color = SKColors.Blue, StrokeWidth = 5, Style = SKPaintStyle.Stroke
})
{
SKRect frameRect = textBounds;
frameRect.Offset(xText, yText);
frameRect.Inflate(10, 10);
canvas.DrawRoundRect(frameRect, 20, 20, framePaint);
// Inflate the frameRect and draw another
frameRect.Inflate(10, 10);
framePaint.Color = SKColors.DarkBlue;
canvas.DrawRoundRect(frameRect, 30, 30, framePaint);
}
}
