/// <summary> /// 添加菜单 /// </summary> /// <param name="roundMenu"> </param> public virtual void AddRoundMenu(RoundMenu roundMenu) { if (roundMenu == null) { return; } if (roundMenus == null) { roundMenus = new List <RoundMenu>(); } roundMenus.Add(roundMenu); Invalidate(); }
protected override void OnDraw(Canvas canvas) { coreX = Width / 2; coreY = Height / 2; roundRadius = (int)(Width / 2 * radiusDistance); //计算中心圆圈半径 RectF rect = new RectF(0, 0, Width, Height); if (roundMenus != null && roundMenus.Count > 0) { float sweepAngle = 360 / roundMenus.Count; //每个弧形的角度 deviationDegree = sweepAngle / 2; //其实的偏移角度,如果4个扇形的时候是X形状,而非+,设为0试试就知道什么意思了 for (int i = 0; i < roundMenus.Count; i++) { RoundMenu roundMenu = roundMenus[i]; //填充 Paint paint = new Paint(); paint.AntiAlias = true; if (onClickState == i) { //选中 paint.Color = new Color(roundMenu.selectSolidColor); } else { //未选中 paint.Color = new Color(roundMenu.solidColor); } canvas.DrawArc(rect, deviationDegree + (i * sweepAngle), sweepAngle, true, paint); //画描边 paint = new Paint(); paint.AntiAlias = true; paint.StrokeWidth = roundMenu.strokeSize; paint.SetStyle(Paint.Style.Stroke); paint.Color = new Color(roundMenu.strokeColor); canvas.DrawArc(rect, deviationDegree + (i * sweepAngle), sweepAngle, roundMenu.useCenter, paint); //画图案 Matrix matrix = new Matrix(); matrix.PostTranslate((float)((coreX + Width / 2 * roundMenu.iconDistance) - (roundMenu.icon.Width / 2)), coreY - (roundMenu.icon.Height / 2)); matrix.PostRotate(((i + 1) * sweepAngle), coreX, coreY); canvas.DrawBitmap(roundMenu.icon, matrix, null); } } //画中心圆圈 if (isCoreMenu) { //填充 RectF rect1 = new RectF(coreX - roundRadius, coreY - roundRadius, coreX + roundRadius, coreY + roundRadius); Paint paint = new Paint(); paint.AntiAlias = true; paint.StrokeWidth = coreMenuStrokeSize; if (onClickState == -1) { paint.Color = new Color(coreMenuSelectColor); } else { paint.Color = new Color(coreMenuColor); } canvas.DrawArc(rect1, 0, 360, true, paint); //画描边 paint = new Paint(); paint.AntiAlias = true; paint.StrokeWidth = coreMenuStrokeSize; paint.SetStyle(Paint.Style.Stroke); paint.Color = new Color(coreMenuStrokeColor); canvas.DrawArc(rect1, 0, 360, true, paint); if (coreBitmap != null) { //画中心圆圈的"OK"图标 canvas.DrawBitmap(coreBitmap, coreX - coreBitmap.Width / 2, coreY - coreBitmap.Height / 2, null); //在 0,0坐标开始画入src } } }