C#

using System;<br />
using System.Collections.Generic;<br />
using System.Text;<br />
using System.Drawing;<br />
using System.Drawing.Drawing2D;<br />
using System.Windows.Forms;<br />
using EZDesignerCore.ShapeAttribute;<br />
using EZDesignerCore.ShapeApperance;<br />
using Utils.GraphicsUtils;<br />
<br />
namespace EZDesignerCore.Shape<br />
{<br />
    public abstract class AbstractShape : ICloneable, IDisposable<br />
    {<br />
        #region properties<br />
<br />
        protected string _name;<br />
        public string Name<br />
        {<br />
            get { return _name; }<br />
            set { _name = value; }<br />
        }<br />
<br />
        protected string _text;<br />
        public string Text<br />
        {<br />
            get { return _text; }<br />
            set { _text = value; }<br />
        }<br />
<br />
        protected RectangleF _border;<br />
        public RectangleF Border<br />
        {<br />
            get { return _border; }<br />
        }<br />
<br />
        public virtual PointF Location<br />
        {<br />
            get { return _border.Location; }<br />
            set { _border.Location = value; }<br />
        }<br />
<br />
        public virtual SizeF Size<br />
        {<br />
            get { return _border.Size; }<br />
            set { _border.Size = value; }<br />
        }<br />
<br />
        protected Spot _spot;<br />
        public Spot Spot<br />
        {<br />
            get { return _spot; }<br />
        }<br />
<br />
        protected Apperance _apprerance;<br />
        public Apperance Apprerance<br />
        {<br />
            get { return _apprerance; }<br />
        }<br />
<br />
        protected Restriction _restriction;<br />
        public Restriction Restriction<br />
        {<br />
            get { return _restriction; }<br />
        }<br />
<br />
        protected State _state;<br />
        internal State State<br />
        {<br />
            get { return _state; }<br />
            set { _state = value; }<br />
        }<br />
<br />
        protected float _rotateDegree;<br />
        public float RotateDegree<br />
        {<br />
            get { return _rotateDegree; }<br />
            set { _rotateDegree = value; }<br />
        }<br />
<br />
        protected TextBox _editTextBox;<br />
        public TextBox EditTextBox<br />
        {<br />
            get { return _editTextBox; }<br />
        }<br />
<br />
        #endregion<br />
<br />
        PointF _startPoint = PointF.Empty;<br />
        Control _control = null;<br />
        Graphics _graphics = null;<br />
<br />
        GraphicsPath _path;<br />
        GraphicsPath _oldPath = null;<br />
        protected float[] _childShapeRotateDegrees;<br />
<br />
        #region constructor<br />
<br />
        public AbstractShape()<br />
        {<br />
            _spot = new Spot();<br />
            _apprerance = new Apperance();<br />
            _state = new State();<br />
            _restriction = new Restriction();<br />
            _border = new Rectangle(0, 0, 10, 10);<br />
            _name = "Object";<br />
            _path = new GraphicsPath();<br />
        }<br />
<br />
        public abstract AbstractShape CreateInstance();<br />
<br />
        #endregion<br />
<br />
        public abstract GraphicsPath CreatePath(PointF startPoint, PointF endPoint);<br />
<br />
        #region draw<br />
<br />
        public void Draw(Graphics g)<br />
        {<br />
            Matrix oldMatrix = g.Transform;<br />
            if (_rotateDegree != 0)<br />
            {<br />
                using (Matrix matrix = new Matrix())<br />
                {<br />
                    matrix.RotateAt(_rotateDegree, _spot.RotatePoint);<br />
                    g.MultiplyTransform(matrix);<br />
                }<br />
            }<br />
<br />
            DrawDetail(g);<br />
<br />
            if (_rotateDegree != 0)<br />
            {<br />
                g.Transform = oldMatrix;<br />
            }<br />
        }<br />
<br />
        protected abstract void DrawDetail(Graphics g);<br />
<br />
        #endregion<br />
<br />
        #region create shape<br />
<br />
        public void EnterCreateMode(PointF point, Control control, Graphics graphics)<br />
        {<br />
            _control = control;<br />
            _graphics = graphics;<br />
            _startPoint = point;<br />
            _state |= State.Creating;<br />
            _control.MouseMove += new MouseEventHandler(EnterCreateMode_MouseMove);<br />
        }<br />
<br />
        void EnterCreateMode_MouseMove(object sender, MouseEventArgs e)<br />
        {<br />
            if (e.Button != MouseButtons.Left)<br />
                return;<br />
<br />
            DrawCreatingObject(_startPoint, e.Location, _graphics);<br />
        }<br />
<br />
        protected void DrawCreatingObject(PointF startPoint, PointF endPoint, Graphics g)<br />
        {<br />
            if (_oldPath != null)<br />
                Rubberband.DrawXORPath(g, _oldPath, _childShapeRotateDegrees);<br />
<br />
            if (_path != null)<br />
                _path.Dispose();<br />
            _path = CreatePath(startPoint, endPoint);<br />
            Rubberband.DrawXORPath(g, _path, _childShapeRotateDegrees);<br />
            _oldPath = _path;<br />
        }<br />
<br />
        public virtual void Create(PointF startPoint, PointF endPoint)<br />
        {<br />
            _border = Functions.StandardlizeRect(startPoint, endPoint);<br />
            float width = Math.Max(5, _border.Size.Width);<br />
            float height = Math.Max(5, _border.Size.Height);<br />
            _border.Size = new SizeF(width, height);<br />
            _spot.CalculateSpots(_border, _rotateDegree);<br />
        }<br />
<br />
        protected void LeaveCreatingMode(PointF point)<br />
        {<br />
            Create(_startPoint, point);<br />
            GCPath();<br />
            _state &= ~State.Creating;<br />
            _control.MouseMove -= new MouseEventHandler(EnterCreateMode_MouseMove);<br />
        }<br />
<br />
        #endregion<br />
<br />
        #region move<br />
<br />
        public void EnterMovingMode(PointF point, Control control, Graphics graphics)<br />
        {<br />
            _control = control;<br />
            _graphics = graphics;<br />
            _startPoint = point;<br />
            _state |= State.Moving;<br />
            _control.MouseMove += new MouseEventHandler(EnterMovingMode_MouseMove);<br />
        }<br />
<br />
        void EnterMovingMode_MouseMove(object sender, MouseEventArgs e)<br />
        {<br />
            if (e.Button != MouseButtons.Left)<br />
                return;<br />
<br />
            DrawMovingObject(_startPoint, e.Location, _graphics);<br />
        }<br />
<br />
        PointF _oldMovingEndPoint;<br />
        public void DrawMovingObject(PointF startPoint, PointF endPoint, Graphics g)<br />
        {<br />
            if (_oldPath != null)<br />
                Rubberband.DrawXORPath(g, _oldPath, SizeF.Empty, PointF.Empty, new SizeF(_oldMovingEndPoint.X - startPoint.X, _oldMovingEndPoint.Y - startPoint.Y), _rotateDegree, _spot.RotatePoint, _childShapeRotateDegrees);<br />
<br />
            if (_path != null)<br />
                _path.Dispose();<br />
            _path = CreatePath(_border.Location, new PointF(_border.Right, _border.Bottom));<br />
            Rubberband.DrawXORPath(g, _path, SizeF.Empty, PointF.Empty, new SizeF(endPoint.X - startPoint.X, endPoint.Y - startPoint.Y), _rotateDegree, _spot.RotatePoint, _childShapeRotateDegrees);<br />
<br />
            _oldPath = _path;<br />
            _oldMovingEndPoint = endPoint;<br />
        }<br />
<br />
        public virtual void Move(float offsetX, float offsetY)<br />
        {<br />
            PointF[] pts = Functions.GetPointsFromRect(_border);<br />
            using (Matrix matrix = new Matrix())<br />
            {<br />
                matrix.Translate(offsetX, offsetY);<br />
                matrix.TransformPoints(pts);<br />
            }<br />
<br />
            _border = Functions.GetRectFromPoints(pts);<br />
            _spot.CalculateSpots(_border, _rotateDegree);<br />
        }<br />
<br />
        protected void LeaveMovingMode(PointF point)<br />
        {<br />
            Move(point.X - _startPoint.X, point.Y - _startPoint.Y);<br />
            GCPath();<br />
            _state &= ~State.Moving;<br />
            _control.MouseMove -= new MouseEventHandler(EnterMovingMode_MouseMove);<br />
        }<br />
<br />
        #endregion<br />
<br />
        #region resize<br />
<br />
        SpotLocation _spotLocation;<br />
        public void EnterResizeMode(SpotLocation location, Control control, PointF point, Graphics graphics)<br />
        {<br />
            _control = control;<br />
            _graphics = graphics;<br />
            _startPoint = point;<br />
            _spotLocation = location;<br />
            _state |= State.Resizing;<br />
            _control.MouseMove += new MouseEventHandler(EnterResizingMode_MouseMove);<br />
        }<br />
<br />
        void EnterResizingMode_MouseMove(object sender, MouseEventArgs e)<br />
        {<br />
            if (e.Button != MouseButtons.Left)<br />
                return;<br />
<br />
            DrawResizingObject(_spotLocation, _startPoint, e.Location, _graphics);<br />
        }<br />
<br />
        SizeF _oldScaleSize;<br />
        protected void DrawResizingObject(SpotLocation location, PointF startPoint, PointF endPoint, Graphics g)<br />
        {<br />
            PointF scaleRootPoint;<br />
            SizeF scaleSize;<br />
            CalculateScaleInfo(location, startPoint, endPoint, out scaleRootPoint, out scaleSize);<br />
<br />
            if (_oldPath != null)<br />
                Rubberband.DrawXORPath(g, _path, _oldScaleSize, scaleRootPoint, SizeF.Empty, _rotateDegree, _spot.RotatePoint, _childShapeRotateDegrees);<br />
<br />
            if (_path != null)<br />
                _path.Dispose();<br />
            _path = CreatePath(_border.Location, new PointF(_border.Right, _border.Bottom));<br />
            Rubberband.DrawXORPath(g, _path, scaleSize, scaleRootPoint, SizeF.Empty, _rotateDegree, _spot.RotatePoint, _childShapeRotateDegrees);<br />
<br />
            _oldPath = _path;<br />
            _oldScaleSize = scaleSize;<br />
        }<br />
<br />
        protected void CalculateScaleInfo(SpotLocation location, PointF startPoint, PointF endPoint, out PointF scaleRootPoint, out SizeF scaleSize)<br />
        {<br />
            scaleRootPoint = PointF.Empty;<br />
            scaleSize = SizeF.Empty;<br />
<br />
            _spot.CalculateSpots(_border, 0);<br />
<br />
            if (_rotateDegree != 0)<br />
            {<br />
                using (Matrix matrix = new Matrix())<br />
                {<br />
                    matrix.RotateAt(-_rotateDegree, startPoint);<br />
                    PointF[] pts = new PointF[] { endPoint };<br />
                    matrix.TransformPoints(pts);<br />
                    endPoint = pts[0];<br />
                }<br />
            }<br />
<br />
            float distanceX = startPoint.X - endPoint.X;<br />
            float distanceY = startPoint.Y - endPoint.Y;<br />
<br />
            float width = _border.Width;<br />
            float height = _border.Height;<br />
<br />
            switch (location)<br />
            {<br />
                case SpotLocation.Left:<br />
                    scaleRootPoint = _spot.Right;<br />
                    scaleSize = new SizeF((float)(width + distanceX) / width, 1);<br />
                    break;<br />
<br />
                case SpotLocation.TopLeft:<br />
                    scaleRootPoint = _spot.BottomRight;<br />
                    scaleSize = new SizeF((float)(width + distanceX) / width, (float)(height + distanceY) / height);<br />
                    break;<br />
<br />
                case SpotLocation.Top:<br />
                    scaleRootPoint = _spot.Bottom;<br />
                    scaleSize = new SizeF(1, (float)(height + distanceY) / height);<br />
                    break;<br />
<br />
                case SpotLocation.TopRight:<br />
                    scaleRootPoint = _spot.BottomLeft;<br />
                    scaleSize = new SizeF((float)(width + (-distanceX)) / width, (float)(height + distanceY) / height);<br />
                    break;<br />
<br />
                case SpotLocation.Right:<br />
                    scaleRootPoint = _spot.Left;<br />
                    scaleSize = new SizeF((float)(width + (-distanceX)) / width, 1);<br />
                    break;<br />
<br />
                case SpotLocation.BottomRight:<br />
                    scaleRootPoint = _spot.TopLeft;<br />
                    scaleSize = new SizeF((float)(width + (-distanceX)) / width, (float)(height + (-distanceY)) / height);<br />
                    break;<br />
<br />
                case SpotLocation.Bottom:<br />
                    scaleRootPoint = _spot.Top;<br />
                    scaleSize = new SizeF(1, (float)(height + (-distanceY)) / height);<br />
                    break;<br />
<br />
                case SpotLocation.BottomLeft:<br />
                    scaleRootPoint = _spot.TopRight;<br />
                    scaleSize = new SizeF((float)(width + distanceX) / width, (float)(_border.Height + (-distanceY)) / height);<br />
                    break;<br />
            }<br />
        }<br />
<br />
        protected PointF _resizeOffset;<br />
        public virtual void Resize(PointF scaleRootPoint, SizeF scaleSize)<br />
        {<br />
            PointF[] pts = Functions.GetPointsFromRect(_border);<br />
            RectangleF tmp = _border;<br />
<br />
            using (Matrix matrix = new Matrix())<br />
            {<br />
                // scale hinh<br />
                matrix.Translate(-scaleRootPoint.X, -scaleRootPoint.Y);<br />
                matrix.TransformPoints(pts);<br />
                matrix.Reset();<br />
                matrix.Scale(scaleSize.Width, scaleSize.Height);<br />
                matrix.TransformPoints(pts);<br />
                matrix.Reset();<br />
                matrix.Translate(scaleRootPoint.X, scaleRootPoint.Y);<br />
                matrix.TransformPoints(pts);<br />
                tmp = Functions.GetRectFromPoints(pts);<br />
<br />
                // rotate shape<br />
                if (_rotateDegree != 0)<br />
                {<br />
                    matrix.Reset();<br />
                    matrix.RotateAt(_rotateDegree, _spot.RotatePoint);<br />
                    matrix.TransformPoints(pts);<br />
<br />
                    // find new rotate point<br />
                    PointF newRotatePoint = Functions.GetRotatePoint(pts);<br />
<br />
                    // translate to new rotate point<br />
                    pts = Functions.GetPointsFromRect(_border);<br />
                    PointF oldRotatePoint = Functions.GetRotatePoint(tmp);<br />
                    float offsetX = newRotatePoint.X - oldRotatePoint.X;<br />
                    float offsetY = newRotatePoint.Y - oldRotatePoint.Y;<br />
                    _resizeOffset = new PointF(offsetX, offsetY);<br />
                    matrix.Reset();<br />
                    matrix.Translate(offsetX, offsetY);<br />
                    matrix.TransformPoints(pts);<br />
<br />
                    tmp = Functions.GetRectFromPoints(pts);<br />
                }<br />
            }<br />
<br />
            tmp = Functions.StandardlizeRect(tmp.Location, new PointF(tmp.X + tmp.Width, tmp.Y + tmp.Height));<br />
            float width = Math.Max(5, tmp.Width);<br />
            float height = Math.Max(5, tmp.Height);<br />
            tmp.Size = new SizeF(width, height);<br />
            _border = tmp;// Functions.StandardlizeRect(_border.Location, new PointF(_border.X + _border.Width, _border.Y + _border.Height));<br />
            //float width = Math.Max(5, _border.Size.Width);<br />
            //float height = Math.Max(5, _border.Size.Height);<br />
            //_border.Size = new SizeF(width, height);<br />
            _spot.CalculateSpots(_border, _rotateDegree);<br />
        }<br />
<br />
        protected void LeaveResizingMode(PointF point)<br />
        {<br />
            PointF scaleRootPoint;<br />
            SizeF scaleSize;<br />
            CalculateScaleInfo(_spotLocation, _startPoint, point, out scaleRootPoint, out scaleSize);<br />
<br />
            Resize(scaleRootPoint, scaleSize);<br />
            GCPath();<br />
            _state &= ~State.Resizing;<br />
            _control.MouseMove -= new MouseEventHandler(EnterResizingMode_MouseMove);<br />
        }<br />
<br />
        #endregion<br />
<br />
        #region rotate<br />
<br />
        static AbstractShape __firstShape;<br />
        static float __rotateDegree;<br />
        public void EnterRotateMode(Control control, PointF point, Graphics graphics, AbstractShape firstShape)<br />
        {<br />
            __firstShape = firstShape;<br />
            _control = control;<br />
            _graphics = graphics;<br />
            _startPoint = point;<br />
            _state |= State.Rotating;<br />
            _control.MouseMove += new MouseEventHandler(EnterRotatingMode_MouseMove);<br />
        }<br />
<br />
        void EnterRotatingMode_MouseMove(object sender, MouseEventArgs e)<br />
        {<br />
            if (e.Button != MouseButtons.Left)<br />
                return;<br />
<br />
            // calculate rotate degree<br />
            if (this == __firstShape)<br />
                __rotateDegree = CalculateRotateDegree(e.Location);<br />
 <br />
            DrawRotatingObject(_startPoint, e.Location, __rotateDegree, _graphics);<br />
        }<br />
<br />
        float _oldRotateDegree;<br />
        public void DrawRotatingObject(PointF startPoint, PointF endPoint, float rotateDegree, Graphics g)<br />
        {<br />
            PointF[] pts = Functions.GetPointsFromRect(_border);<br />
            using (Matrix matrix = new Matrix())<br />
            {<br />
                matrix.RotateAt(rotateDegree, _spot.RotatePoint);<br />
                matrix.TransformPoints(pts);<br />
            }<br />
<br />
            if (_oldPath != null)<br />
                Rubberband.DrawXORPath(g, _oldPath, SizeF.Empty, PointF.Empty, SizeF.Empty, _oldRotateDegree, _spot.RotatePoint, _childShapeRotateDegrees);<br />
<br />
            if (_path != null)<br />
                _path.Dispose();<br />
            _path = CreatePath(_border.Location, new PointF(_border.Right, _border.Bottom));<br />
            Rubberband.DrawXORPath(g, _path, SizeF.Empty, PointF.Empty, SizeF.Empty, rotateDegree, _spot.RotatePoint, _childShapeRotateDegrees);<br />
<br />
            _oldPath = _path;<br />
            _oldRotateDegree = rotateDegree;<br />
        }<br />
<br />
        public virtual void Rotate(float rotateDegree)<br />
        {<br />
            _rotateDegree = rotateDegree;<br />
            _spot.CalculateSpots(_border, _rotateDegree);<br />
        }<br />
<br />
        protected void LeaveRotatingMode(PointF point)<br />
        {<br />
            Rotate(__rotateDegree);<br />
            GCPath();<br />
            _state &= ~State.Rotating;<br />
            _control.MouseMove -= new MouseEventHandler(EnterRotatingMode_MouseMove);<br />
        }<br />
<br />
        float CalculateRotateDegree(PointF point)<br />
        {<br />
            PointF rootPoint = _spot.RotatePoint;<br />
<br />
            double tg = ((float)point.X - rootPoint.X) / (-(float)point.Y + rootPoint.Y);<br />
            float degree = (float)((Math.Atan(tg) / Math.PI) * 180);<br />
            if ((point.X < rootPoint.X && point.Y > rootPoint.Y) || (point.X > rootPoint.X && point.Y > rootPoint.Y))<br />
                degree += 180;<br />
            return degree;<br />
        }<br />
<br />
        #endregion<br />
<br />
        #region support functions<br />
<br />
        public virtual bool Contains(PointF point)<br />
        {<br />
            using (GraphicsPath path = CreatePath(_border.Location, new PointF(_border.Right, _border.Bottom)))<br />
            {<br />
                if (_rotateDegree != 0)<br />
                {<br />
                    using (Matrix matrix = new Matrix())<br />
                    {<br />
                        matrix.RotateAt(_rotateDegree, _spot.RotatePoint);<br />
                        path.Transform(matrix);<br />
                    }<br />
                }<br />
                return path.IsVisible(point);<br />
            }<br />
        }<br />
<br />
        public void LeaveCurrentMode(PointF point)<br />
        {<br />
            if ((_state & State.Creating) != 0)<br />
                LeaveCreatingMode(point);<br />
<br />
            if ((_state & State.Moving) != 0)<br />
                LeaveMovingMode(point);<br />
<br />
            if ((_state & State.Resizing) != 0)<br />
                LeaveResizingMode(point);<br />
<br />
            if ((_state & State.Rotating) != 0)<br />
                LeaveRotatingMode(point);<br />
        }<br />
<br />
        private void GCPath()<br />
        {<br />
            if (_oldPath != null)<br />
            {<br />
                _oldPath.Dispose();<br />
                _oldPath = null;<br />
            }<br />
            if (_path != null)<br />
            {<br />
                _path.Dispose();<br />
                _path = null;<br />
            }<br />
        }<br />
<br />
        #endregion<br />
<br />
        #region IClonable Members<br />
<br />
        public virtual object Clone()<br />
        {<br />
            AbstractShape obj = this.CreateInstance();<br />
            obj._name = _name;<br />
            obj._text = _text;<br />
            obj.Size = this.Size;<br />
            obj.Location = this.Location;<br />
            obj._apprerance = (Apperance)this._apprerance.Clone();<br />
            //obj._state = _state;<br />
            obj._restriction = (Restriction)this._restriction.Clone();<br />
            obj._spot = (Spot)this._spot.Clone();<br />
            obj._rotateDegree = _rotateDegree;<br />
            return obj;<br />
        }<br />
<br />
        #endregion<br />
<br />
        #region IDisposable Members<br />
<br />
        public virtual void Dispose()<br />
        {<br />
            if (this._apprerance != null)<br />
                this._apprerance.Dispose();<br />
            if (this._editTextBox != null && this._editTextBox.IsDisposed == false)<br />
                this._editTextBox.Dispose();<br />
            __firstShape = null;<br />
        }<br />
<br />
        #endregion<br />
    }<br />
}

float _scaleOffsetX;<br />
float _scaleOffsetY;<br />
float _rotateAngle;<br />
float _movingOffsetX;<br />
float _movingOffsetY;