using System.Windows.Forms;
using System.Drawing;

namespace FastReport.Utils
{
    /// <summary>
    /// Specifies the main mode of the designer's workspace.
    /// </summary>
    public enum WorkspaceMode1
    {
        /// <summary>
        /// Specifies selection mode.
        /// </summary>
        Select,

        /// <summary>
        /// Specifies insertion mode.
        /// </summary>
        Insert,

        /// <summary>
        /// Specifies drag-drop mode.
        /// </summary>
        DragDrop
    }

    /// <summary>
    /// Specifies the additional mode of the designer's workspace.
    /// </summary>
    public enum WorkspaceMode2
    {
        /// <summary>
        /// Specifies default mode.
        /// </summary>
        None,

        /// <summary>
        /// Indicates that user moves the selected objects.
        /// </summary>
        Move,

        /// <summary>
        /// Indicates that user resizes the selected objects.
        /// </summary>
        Size,

        /// <summary>
        /// Indicates that user draw the selection rectangle.
        /// </summary>
        SelectionRect,

        /// <summary>
        /// Specifies a custom mode handled by the object.
        /// </summary>
        Custom
    }

    /// <summary>
    /// Provides a data for mouse events.
    /// </summary>
    public class FRMouseEventArgs
    {
        /// <summary>
        /// The X mouse coordinate.
        /// </summary>
        public float x;

        /// <summary>
        /// The Y mouse coordinate.
        /// </summary>
        public float y;

        /// <summary>
        /// Current state of mouse buttons.
        /// </summary>
        public MouseButtons button;

        /// <summary>
        /// Current keyboard state.
        /// </summary>
        public Keys modifierKeys;

        /// <summary>
        /// Indicates that current object was handled the mouse message.
        /// </summary>
        public bool handled;

        /// <summary>
        /// The delta of the mouse movement.
        /// </summary>
        public PointF delta;

        /// <summary>
        /// The mouse wheel delta.
        /// </summary>
        public int wheelDelta;

        /// <summary>
        /// Current cursor shape.
        /// </summary>
        public Cursor cursor;

        /// <summary>
        /// Additional mode of the designer's workspace.
        /// </summary>
        public WorkspaceMode2 mode;

        /// <summary>
        /// Current sizing point if <b>Mode</b> is set to <b>Size</b>.
        /// </summary>
        public SizingPoint sizingPoint;

        /// <summary>
        /// Current selection rectangle if mode is set to <b>SelectionRect</b>.
        /// </summary>
        public RectangleF selectionRect;

        /// <summary>
        /// Active object that handles the mouse event.
        /// </summary>
        public ComponentBase activeObject;

        /// <summary>
        /// The source object of drag-drop operation.
        /// </summary>
        public ComponentBase DragSource
        {
            get
            {
                if (dragSources != null && dragSources.Length > 0)
                    return dragSources[dragSources.Length - 1];
                return null;
            }
            set
            {
                if (value != null)
                    dragSources = new ComponentBase[] { value };
                else
                    dragSources = null;
            }
        }

        /// <summary>
        /// Multiple sources objects of drag-drop operation.
        /// </summary>
        public ComponentBase[] dragSources;

        /// <summary>
        /// The target object of drag-drop operation.
        /// </summary>
        public ComponentBase dragTarget;

        /// <summary>
        /// The message to show when drag source is over the object.
        /// </summary>
        public string dragMessage;

        /// <summary>
        /// Additional data supplied and handled by report objects.
        /// </summary>
        public object data;
    }

    /// <summary>
    /// Specifies the sizing point used to resize an object by mouse.
    /// </summary>
    public enum SizingPoint
    {
        /// <summary>
        /// No sizing point.
        /// </summary>
        None,

        /// <summary>
        /// Specifies left-top sizing point.
        /// </summary>
        LeftTop,

        /// <summary>
        /// Specifies left-bottom sizing point.
        /// </summary>
        LeftBottom,

        /// <summary>
        /// Specifies right-top sizing point.
        /// </summary>
        RightTop,

        /// <summary>
        /// Specifies right-bottom sizing point.
        /// </summary>
        RightBottom,

        /// <summary>
        /// Specifies top-center sizing point.
        /// </summary>
        TopCenter,

        /// <summary>
        /// Specifies bottom-center sizing point.
        /// </summary>
        BottomCenter,

        /// <summary>
        /// Specifies left-center sizing point.
        /// </summary>
        LeftCenter,

        /// <summary>
        /// Specifies right-center sizing point.
        /// </summary>
        RightCenter
    }

    internal static class SizingPointHelper
    {
        // sizing points and its numbers:
        // LeftTop (1)      TopCenter (5)      RightTop (3)
        //
        // LeftCenter (7)                      RightCenter (8)
        //
        // LeftBottom (2)   BottomCenter (6)   RightBottom (4)

        public static SizingPoint SwapDiagonally(SizingPoint p)
        {
            int[] swap = new int[] { 0, 4, 3, 2, 1, 5, 6, 7, 8 };
            return (SizingPoint)swap[(int)p];
        }

        public static SizingPoint SwapHorizontally(SizingPoint p)
        {
            int[] swap = new int[] { 0, 3, 4, 1, 2, 5, 6, 8, 7 };
            return (SizingPoint)swap[(int)p];
        }

        public static SizingPoint SwapVertically(SizingPoint p)
        {
            int[] swap = new int[] { 0, 2, 1, 4, 3, 6, 5, 7, 8 };
            return (SizingPoint)swap[(int)p];
        }

        public static Cursor ToCursor(SizingPoint p)
        {
            Cursor[] cursors = new Cursor[] { Cursors.Default, Cursors.SizeNWSE, Cursors.SizeNESW, Cursors.SizeNESW,
        Cursors.SizeNWSE, Cursors.SizeNS, Cursors.SizeNS, Cursors.SizeWE, Cursors.SizeWE };
            return cursors[(int)p];
        }
    }

    /// <summary>
    /// Specifies a selection point used to resize an object.
    /// </summary>
    public class SelectionPoint
    {
        /// <summary>
        /// The X coordinate of the point.
        /// </summary>
        public float x;

        /// <summary>
        /// The Y coordinate of the point.
        /// </summary>
        public float y;

        /// <summary>
        /// The size mode.
        /// </summary>
        public SizingPoint sizingPoint;

        /// <summary>
        /// Initializes a new instance of the <b>SelectionPoint</b> class with specified location and size mode.
        /// </summary>
        /// <param name="x">The X coordinate.</param>
        /// <param name="y">The Y coordinate.</param>
        /// <param name="pt">Size mode.</param>
        public SelectionPoint(float x, float y, SizingPoint pt)
        {
            this.x = x;
            this.y = y;
            sizingPoint = pt;
        }
    }
}