// Unity C# reference source
// Copyright (c) Unity Technologies. For terms of use, see
// https://unity3d.com/legal/licenses/Unity_Reference_Only_License

using UnityEditor.ShortcutManagement;
using UnityEngine;

namespace UnityEditor.Snap
{
    static class Shortcuts
    {
        [Shortcut("Snap/Toggle Grid Snap", typeof(SceneView), KeyCode.Backslash)]
        internal static void ToggleGridSnap()
        {
            EditorSnapSettings.gridSnapEnabled = !EditorSnapSettings.gridSnapEnabled;
        }

        [Shortcut("Grid/Increase Grid Size", typeof(SceneView), KeyCode.RightBracket, ShortcutModifiers.Action)]
        internal static void IncreaseGridSize()
        {
            GridSettings.sizeMultiplier++;
            SceneView.RepaintAll();
        }

        [Shortcut("Grid/Decrease Grid Size", typeof(SceneView), KeyCode.LeftBracket, ShortcutModifiers.Action)]
        internal static void DecreaseGridSize()
        {
            GridSettings.sizeMultiplier--;
            SceneView.RepaintAll();
        }

        [Shortcut("Grid/Reset Grid", typeof(SceneView))]
        internal static void ResetGrid()
        {
            MenuNudgePerspectiveReset();
            GridSettings.ResetGridSettings();
            SceneView.RepaintAll();
        }

        [Shortcut("Grid/Nudge Grid Backward", typeof(SceneView))]
        internal static void MenuNudgePerspectiveBackward()
        {
            SceneView sv = SceneView.lastActiveSceneView;
            SceneViewGrid.GridRenderAxis axis = sv.sceneViewGrids.gridAxis;
            Vector3 v = sv.sceneViewGrids.GetPivot(axis);
            Vector3 gridSize = GridSettings.size;

            switch (axis)
            {
                case SceneViewGrid.GridRenderAxis.X:
                    v -= Vector3.right * gridSize.x;
                    break;
                case SceneViewGrid.GridRenderAxis.Y:
                    v -= Vector3.up * gridSize.y;
                    break;
                case SceneViewGrid.GridRenderAxis.Z:
                    v -= Vector3.forward * gridSize.z;
                    break;
            }

            sv.sceneViewGrids.SetPivot(axis, v);
            sv.Repaint();
        }

        [Shortcut("Grid/Nudge Grid Forward", typeof(SceneView))]
        internal static void MenuNudgePerspectiveForward()
        {
            SceneView sv = SceneView.lastActiveSceneView;
            SceneViewGrid.GridRenderAxis axis = sv.sceneViewGrids.gridAxis;
            Vector3 v = sv.sceneViewGrids.GetPivot(axis);
            Vector3 gridSize = GridSettings.size;

            switch (axis)
            {
                case SceneViewGrid.GridRenderAxis.X:
                    v += Vector3.right * gridSize.x;
                    break;
                case SceneViewGrid.GridRenderAxis.Y:
                    v += Vector3.up * gridSize.y;
                    break;
                case SceneViewGrid.GridRenderAxis.Z:
                    v += Vector3.forward * gridSize.z;
                    break;
            }

            sv.sceneViewGrids.SetPivot(axis, v);
            sv.Repaint();
        }

        internal static void MenuNudgePerspectiveReset()
        {
            SceneView sv = SceneView.lastActiveSceneView;
            sv.ResetGridPivot();
            sv.Repaint();
        }
    }
}
