using Matrox.MatroxImagingLibrary;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace MilUI {
    public class MilGraphics {
        private MIL_ID _diplayId = MIL.M_NULL;
        private MIL_ID _graphicListId = MIL.M_NULL;
        private List<MIL_ID> _graphicLabels = new List<MIL_ID>();

        public MilGraphics(MIL_ID diplayId, MIL_ID graphicListId) {
            _diplayId = diplayId;
            _graphicListId = graphicListId;
        }

        public void Add() {
            MIL_ID graphicLabel = GetLastLabel();

            if (graphicLabel != MIL.M_NO_LABEL) {
                _graphicLabels.Add(graphicLabel);
            }
        }

        public void Clear() {
            MIL.MdispControl(_diplayId, MIL.M_UPDATE_GRAPHIC_LIST, MIL.M_DISABLE);

            for (int i = 0; i < _graphicLabels.Count; i++) {
                RemoveGraphic(_graphicLabels[i]);
            }

            _graphicLabels.Clear();
            MIL.MdispControl(_diplayId, MIL.M_UPDATE_GRAPHIC_LIST, MIL.M_ENABLE);
        }

        public void Clear(List<MIL_INT> gl) {
            MIL.MdispControl(_diplayId, MIL.M_UPDATE_GRAPHIC_LIST, MIL.M_DISABLE);

            for (int i = 0; i < gl.Count; i++) {
                RemoveGraphic(gl[i]);
            }

            _graphicLabels.Clear();
            MIL.MdispControl(_diplayId, MIL.M_UPDATE_GRAPHIC_LIST, MIL.M_ENABLE);
        }

        public void Remove(MIL_INT graphicLabel) {
            RemoveGraphic(graphicLabel);
        }

        private void RemoveGraphic(MIL_INT graphicLabel) {
            if (graphicLabel != MIL.M_NULL) {
                MIL.MgraControlList(
                    _graphicListId, MIL.M_GRAPHIC_LABEL(graphicLabel),
                    MIL.M_DEFAULT, MIL.M_DELETE, MIL.M_DEFAULT);
            }
        }

        public void SetSelectable(bool enable) {
            MIL_ID graphicLabel = GetLastLabel();

            if (graphicLabel != MIL.M_NO_LABEL) {
                MIL_INT milEnable = enable ? MIL.M_ENABLE : MIL.M_DISABLE;
                MIL.MgraControlList(
                    _graphicListId, MIL.M_GRAPHIC_LABEL(graphicLabel),
                    MIL.M_DEFAULT, MIL.M_SELECTABLE, milEnable);
            }
        }

        public void SetResizable(bool enable) {
            MIL_ID graphicLabel = GetLastLabel();

            if (graphicLabel != MIL.M_NO_LABEL) {
                MIL_INT milEnable = enable ? MIL.M_ENABLE : MIL.M_DISABLE;
                MIL.MgraControlList(
                    _graphicListId, MIL.M_GRAPHIC_LABEL(graphicLabel),
                    MIL.M_DEFAULT, MIL.M_RESIZABLE, milEnable);
            }
        }

        public void SetRotatable(bool enable) {
            MIL_ID graphicLabel = GetLastLabel();

            if (graphicLabel != MIL.M_NO_LABEL) {
                MIL_INT milEnable = enable ? MIL.M_ENABLE : MIL.M_DISABLE;
                MIL.MgraControlList(
                    _graphicListId, MIL.M_GRAPHIC_LABEL(graphicLabel),
                    MIL.M_DEFAULT, MIL.M_ROTATABLE, milEnable);
            }
        }

        public void SetTranslatable(bool enable) {
            MIL_ID graphicLabel = GetLastLabel();

            if (graphicLabel != MIL.M_NO_LABEL) {
                MIL_INT milEnable = enable ? MIL.M_ENABLE : MIL.M_DISABLE;
                MIL.MgraControlList(
                    _graphicListId, MIL.M_GRAPHIC_LABEL(graphicLabel),
                    MIL.M_DEFAULT, MIL.M_TRANSLATABLE, milEnable);
            }
        }

        public void SetFixedAspectRatio(double ratio) {
            MIL_ID graphicLabel = GetLastLabel();

            if (graphicLabel != MIL.M_NO_LABEL) {
                MIL.MgraControlList(
                    _graphicListId, MIL.M_GRAPHIC_LABEL(graphicLabel),
                    MIL.M_DEFAULT, MIL.M_CONSTRAIN_ASPECT_RATIO, ratio);
            }
        }

        public void SetSpecificFeature(bool enable) {
            MIL_ID graphicLabel = GetLastLabel();

            if (graphicLabel != MIL.M_NO_LABEL) {
                MIL_INT milEnable = enable ? MIL.M_ENABLE : MIL.M_DISABLE;
                MIL.MgraControlList(
                    _graphicListId, MIL.M_GRAPHIC_LABEL(graphicLabel),
                    MIL.M_DEFAULT, MIL.M_SPECIFIC_FEATURES_EDITABLE, milEnable);
            }
        }

        public MIL_ID GetLastLabel() {
            MIL_ID graphicLabel = MIL.M_NULL;
            MIL.MgraInquireList(_graphicListId, MIL.M_LIST, MIL.M_DEFAULT, MIL.M_LAST_LABEL, ref graphicLabel);
            return graphicLabel;
        }

        public bool HasGraphicLabel(MIL_INT graphicLabel) {
            foreach (var gl in _graphicLabels) {
                if (gl == graphicLabel) {
                    return true;
                }
            }
            return false;
        }

        public int GetLocalIndex(MIL_INT graphicLabel) {
            for (int i = 0; i < _graphicLabels.Count; i++) {
                if (_graphicLabels[i] == graphicLabel) {
                    return i;
                }
            }
            return -1;
        }

        public MilGraphics Clone() {
            var milGraphics = new MilGraphics(_diplayId, _graphicListId);
            foreach (var label in _graphicLabels) {
                milGraphics._graphicLabels.Add(label);
            }

            return milGraphics;
        }

    }
}