agrobot_base/AgroBase/AgroBase/Forms/IHM/Controls/HmiModuleBadge.cs

using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

namespace AgroBase.Forms.IHM.Controls
{
    public enum HmiModuleState
    {
        Operante = 0,
        Alerta = 1,
        Falha = 2,
        Desconectado = 3,
        Selecionado = 4
    }

    [DefaultEvent("Click")]
    public class HmiModuleBadge : Control
    {
        private HmiModuleState _state = HmiModuleState.Operante;
        private string _moduleCode = "MOD";

        public HmiModuleBadge()
        {
            SetStyle(
                ControlStyles.SupportsTransparentBackColor |
                ControlStyles.UserPaint |
                ControlStyles.AllPaintingInWmPaint |
                ControlStyles.OptimizedDoubleBuffer |
                ControlStyles.ResizeRedraw,
                true);

            DoubleBuffered = true;
            BackColor = Color.Transparent;
            ForeColor = HmiTheme.Text;
            Cursor = Cursors.Hand;
            Font = new Font("Segoe UI", 8F, FontStyle.Bold);
            Size = new Size(45, 27);
            MinimumSize = new Size(42, 26);
            UpdateStyles();
        }

        [Category("Conteúdo")]
        public string ModuleCode
        {
            get { return _moduleCode; }
            set
            {
                _moduleCode = value ?? string.Empty;
                Invalidate();
            }
        }

        [Category("Estado")]
        public HmiModuleState State
        {
            get { return _state; }
            set
            {
                _state = value;
                Invalidate();
            }
        }

        private Color Accent
        {
            get
            {
                switch (_state)
                {
                    case HmiModuleState.Alerta:
                        return HmiTheme.Warning;

                    case HmiModuleState.Falha:
                        return HmiTheme.Danger;

                    case HmiModuleState.Desconectado:
                        return HmiTheme.TextMuted;

                    case HmiModuleState.Selecionado:
                        return HmiTheme.Info;

                    case HmiModuleState.Operante:
                    default:
                        return HmiTheme.Success;
                }
            }
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;

            Rectangle rect = new Rectangle(0, 0, Width - 1, Height - 1);

            using (GraphicsPath path = CriarCaminhoArredondado(rect, 7))
            {
                Color accent = Accent;

                using (SolidBrush fill = new SolidBrush(
                    Color.FromArgb(34, accent.R, accent.G, accent.B)))
                {
                    e.Graphics.FillPath(fill, path);
                }

                using (Pen border = new Pen(
                    accent,
                    _state == HmiModuleState.Selecionado ? 2F : 1.2F))
                {
                    e.Graphics.DrawPath(border, path);
                }
            }

            TextRenderer.DrawText(
                e.Graphics,
                _moduleCode,
                Font,
                rect,
                _state == HmiModuleState.Desconectado
                    ? HmiTheme.TextMuted
                    : HmiTheme.Text,
                TextFormatFlags.HorizontalCenter |
                TextFormatFlags.VerticalCenter |
                TextFormatFlags.EndEllipsis);
        }

        private static GraphicsPath CriarCaminhoArredondado(
            Rectangle bounds,
            int radius)
        {
            GraphicsPath path = new GraphicsPath();
            int diameter = radius * 2;

            path.AddArc(
                bounds.Left,
                bounds.Top,
                diameter,
                diameter,
                180,
                90);

            path.AddArc(
                bounds.Right - diameter,
                bounds.Top,
                diameter,
                diameter,
                270,
                90);

            path.AddArc(
                bounds.Right - diameter,
                bounds.Bottom - diameter,
                diameter,
                diameter,
                0,
                90);

            path.AddArc(
                bounds.Left,
                bounds.Bottom - diameter,
                diameter,
                diameter,
                90,
                90);

            path.CloseFigure();
            return path;
        }
    }
}