/// <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
}
}
}
