public override void Draw(Android.Graphics.Canvas canvas)
{
base.Draw(canvas);
var rect = new RectF(0,0,300,300);
switch (TheShape)
{
case Shape.Circle:
canvas.DrawOval(rect, new Paint() { Color = Color.Aqua });
break;
case Shape.Square:
canvas.DrawRect(rect, new Paint() { Color = Color.Red });
break;
case Shape.Triangle:
var path = new Path();
path.MoveTo(rect.CenterX(), 0);
path.LineTo(0, rect.Height());
path.LineTo(rect.Width(), rect.Height());
path.Close();
var paint = new Paint() {Color = Color.Magenta};
paint.SetStyle(Paint.Style.Fill);
canvas.DrawPath(path, paint);
break;
default:
throw new ArgumentOutOfRangeException();
}
}
protected override void OnDraw(Android.Graphics.Canvas canvas)
{
var rect = new RectF(0, 0, 300, 300);
switch (Shape)
{
case Shape.Circle:
canvas.DrawOval(rect, new Paint() { Color = Color.CornflowerBlue });
break;
case Shape.Square:
canvas.DrawRect(rect, new Paint() { Color = Color.Crimson });
break;
case Shape.Triangle:
var path = new Path();
path.MoveTo(rect.CenterX(), rect.Top);
path.LineTo(rect.Left, rect.Bottom);
path.LineTo(rect.Right, rect.Bottom);
path.Close();
var paint = new Paint() {Color = Color.Crimson};
paint.Color = Color.Gold;
paint.SetStyle(Paint.Style.Fill);
canvas.DrawPath(path, paint);
break;
default:
throw new ArgumentOutOfRangeException();
}
}
/// <Docs>The Canvas to which the View is rendered.</Docs>
/// <summary>
/// BoxViewのカスタマイズはDrawで行う
/// </summary>
/// <param name="canvas">Canvas.</param>
public override void Draw(Android.Graphics.Canvas canvas)
{
// 2重に描画してしまうので、baseは描画しない
//base.Draw(canvas);
// ElementをキャストしてFormsで定義したCustomBoxViewを取得
var formsBox = (CustomBoxView)Element;
// Androidの描画はPaintを使用
using (var paint = new Paint())
{
// 塗りつぶし色の設定
paint.Color = formsBox.FillColor.ToAndroid();
// 吹き出し部分の設定
// パスの生成
var path = new Path();
// スタート地点の設定
path.MoveTo(0, 0);
// 経由地点の設定
path.LineTo(100, 10);
path.LineTo(100, 100);
// パスを繋げる
path.Close();
// 描画
canvas.DrawPath(path, paint);
// 角の丸い四角の設定
// 角丸の直径を決める
// widthとheightを比較して小さい方を基準にする
var minSize = Math.Min(Width, Height);
// 指定するのは直径なので、指定半径を2倍する
var diameter = formsBox.Radius * 2;
// 角丸の直径はminSize以下でなければならない
if (diameter > minSize)
diameter = minSize;
// 描画領域の設定
var rect = new RectF(0, 0, (float)Width, (float)Height);
//四角形描画
canvas.DrawRoundRect(rect, diameter, diameter, paint);
}
}
protected override bool DrawChild(Android.Graphics.Canvas canvas, Android.Views.View child, long drawingTime)
{
try
{
var element = (RoundedImage)Element;
var radius = Math.Min(Width, Height) / 2;
var strokeWidth = 10;
radius -= strokeWidth / 2;
//Create path to clip
var path = new Path();
path.AddCircle(Width / 2, Height / 2, radius, Path.Direction.Ccw);
canvas.Save();
canvas.ClipPath(path);
var result = base.DrawChild(canvas, child, drawingTime);
canvas.Restore();
// Create path for circle border
path = new Path();
path.AddCircle(Width / 2, Height / 2, radius, Path.Direction.Ccw);
var paint = new Paint();
paint.AntiAlias = true;
//TODO look for a correct way to assign the BorderWidth depending of the screen dpi
paint.StrokeWidth = (float)element.BorderWidth;
paint.SetStyle(Paint.Style.Stroke);
paint.Color = element.BorderColor.ToAndroid();
canvas.DrawPath(path, paint);
//Properly dispose
paint.Dispose();
path.Dispose();
return result;
}
catch (Exception ex)
{
//Why this happend
Console.WriteLine(ex.Message);
}
return base.DrawChild(canvas, child, drawingTime);
}
protected override void OnDraw(Shape shape, Android.Graphics.Canvas canvas, Paint paint)
{
var height = canvas.ClipBounds.Bottom;
var width = canvas.ClipBounds.Right;
if (noChild)
{
var borderHeight = (int)(this.borderThickness.Top + this.borderThickness.Bottom);
var borderWidth = (int)(this.borderThickness.Left + this.borderThickness.Right);
height = borderHeight > 0 ? borderHeight : canvas.ClipBounds.Bottom;
width = borderWidth > 0 ? borderWidth : canvas.ClipBounds.Right;
}
shape.Resize(width, height);
shape.Draw(canvas, strokepaint);
var pathInner = new Path();
var rect = new RectF(
(float)(borderThickness.Left),
(float)(borderThickness.Top),
(float)(canvas.ClipBounds.Right - borderThickness.Right),
(float)(canvas.ClipBounds.Bottom - borderThickness.Bottom));
pathInner.AddRoundRect(rect, cornerRadiusArray, Path.Direction.Cw);
if (!noChild)
{
var clearPaint = new Paint();
clearPaint.SetXfermode(new PorterDuffXfermode(PorterDuff.Mode.Clear));
canvas.DrawPath(pathInner, clearPaint);
}
canvas.DrawPath(pathInner, fillpaint);
}
protected override void OnDraw (Android.Graphics.Canvas canvas)
{
canvas.DrawBitmap (canvasBitmap, 0, 0, canvasPaint);
canvas.DrawPath (drawPath, drawPaint);
}