public virtual void doDoubleClick(PanelDoubleBuffered pn, ShapeBase ns)
{
parentPanel = pn;
namingShape = ns;
if (parentPanel.isNaming)
{
parentPanel.AffectingShape.endEditName();
return;
}
parentPanel.AffectingShape = ns;
parentPanel.isNaming = true;
txtName = new TextBox();
//cho class con định vị xong rồi add lên shape theo vị trí đó
dinhviTextBox(txtName);
txtName.Text = sName; //hiện tên cũ
sName = "";
this.Invalidate();
this.Controls.Add(txtName);
txtName.SelectAll();
txtName.Focus();
txtName.KeyPress += new System.Windows.Forms.KeyPressEventHandler(txtName_KeyPress);
//Data type cho attribute
if (this is AttributeShape)
{
if (((AttributeShape)this).attributeChilds.Count == 0)
{
ucDataDescription = new DataDescription();
ucDataDescription.Location = new Point(this.Location.X + this.Width + 5, this.Location.Y);
parentPanel.Controls.Add(ucDataDescription);
//Cho USC nằm lên trên.
parentPanel.Controls.SetChildIndex(ucDataDescription, 0);
if (((AttributeShape)this).type == AttributeType.Key)
ucDataDescription.chkNull.Enabled = false;
if (((AttributeShape)this).dataType != null)
ucDataDescription.cboDataType.SelectedItem = ((AttributeShape)this).dataType;
if (((AttributeShape)this).dataLength != 0)
ucDataDescription.txtLength.Text = ((AttributeShape)this).dataLength.ToString();
ucDataDescription.chkNull.Checked = ((AttributeShape)this).allowNull;
if (((AttributeShape)this).description != "")
ucDataDescription.txtDescription.Text = ((AttributeShape)this).description;
ucDataDescription.btnOK.Click += new EventHandler(btnOK_Click);
}
}
}
public static int CalculateCardiDirection(ShapeBase shape1, ShapeBase shape2)
{
if (shape1 == null || shape2 == null)
return 0;
//Cạnh đặt Shape - > 1,2,3,4: Up, Right, Down, Left
int edgeCardiPlace = -1;
Point point1 = shape1.CenterPoint;
Point point2 = shape2.CenterPoint;
//Cách khác: phương trình qua 2 điểm centerRelationship và point1 (y = mx + b)
double m = point2.Y - point1.Y;
if (point2.X != point1.X)
m /= point2.X - point1.X;
else
m = 0;
double b = point2.Y - m * point2.X;
if (point1.X < point2.X) //shape 2 nằm bên phải
{
//thế "x + width" của shape 1 vào phương trình để tính y
//Nếu y vượt quá khoảng y của shape 2 thì đặt cardi ở up hoặc down: else đặt right
double ytemp = m * (shape1.Location.X + shape1.Width) + b;
if (ytemp < shape1.Location.Y) edgeCardiPlace = 1; //Up
else if (ytemp > shape1.Location.Y + shape1.Height) edgeCardiPlace = 3; //Down
if (ytemp >= shape1.Location.Y && ytemp <= shape1.Location.Y + shape1.Height) edgeCardiPlace = 2; //Right
}
else //shape 2 nằm bên trái hoặc nằm thẳng hàng
{
//thế "x" của shape 1 vào phương trình để tính y
//Nếu y vượt quá khoảng y của shape 2 thì đặt cardi ở up hoặc down: else đặt left
double ytemp = m * (shape1.Location.X) + b;
if (ytemp < shape1.Location.Y) edgeCardiPlace = 1; //Up
else if (ytemp > shape1.Location.Y + shape1.Height) edgeCardiPlace = 3; //Down
if (ytemp >= shape1.Location.Y && ytemp <= shape1.Location.Y + shape1.Height) edgeCardiPlace = 4; //Left
}
return edgeCardiPlace;
}
private static Point getStartPos(int EdgeCardiPlace, ShapeBase shape, Point TopLeft, Point BottomRight, int stepX, int stepY, Bitmap myCardi)
{
Point StartPos = new Point();
switch (EdgeCardiPlace)
{
case 1:
StartPos.X = TopLeft.X + stepX;
StartPos.Y = TopLeft.Y - myCardi.Height;
break;
case 2:
StartPos.X = BottomRight.X + myCardi.Width;
StartPos.Y = BottomRight.Y - (shape.Height - stepY);
break;
case 3:
StartPos.X = BottomRight.X - (shape.Width - stepX);
StartPos.Y = BottomRight.Y + myCardi.Height;
break;
case 4:
StartPos.X = TopLeft.X - myCardi.Width;
StartPos.Y = TopLeft.Y + stepY;
break;
}
return StartPos;
}
private static Point getCardiPos(int EdgeCardiPlace, ShapeBase shape, Point TopLeft, Point BottomRight, int stepX, int stepY, Bitmap myCardi)
{
Point CardiPos = new Point();
switch (EdgeCardiPlace)
{
case 1:
CardiPos.X = TopLeft.X + stepX - myCardi.Width / 2;
CardiPos.Y = TopLeft.Y - myCardi.Height;
break;
case 2:
CardiPos.X = BottomRight.X;
CardiPos.Y = BottomRight.Y - (shape.Height - stepY) - myCardi.Height / 2;
break;
case 3:
CardiPos.X = BottomRight.X - (shape.Width - stepX) - myCardi.Width / 2 + 1;
CardiPos.Y = BottomRight.Y;
break;
case 4:
CardiPos.X = TopLeft.X - myCardi.Width;
CardiPos.Y = TopLeft.Y + stepY - myCardi.Height / 2 + 1;
break;
}
return CardiPos;
}
public override void doDoubleClick(PanelDoubleBuffered pn, ShapeBase ns)
{
}
protected override void OnMouseUp(MouseEventArgs e)
{
if (isDrawing)
{
CancelDrawing();
currentShape = null;
}
if (isSelecting)
{
isSelecting = false;
if (Last_Mouse_Pos.X != -1)
{
JDrawReversibleRectangle(First_Mouse_Pos, Last_Mouse_Pos);
}
First_Mouse_Pos.X = -1;
First_Mouse_Pos.Y = -1;
Last_Mouse_Pos.X = -1;
Last_Mouse_Pos.Y = -1;
}
}
//Panel Event
protected override void OnMouseDown(MouseEventArgs e)
{
//Click vô panel khi đang sửa tên -> dừng sửa
if (isNaming)
{
AffectingShape.endEditName();
return;
}
if (e.Button == MouseButtons.Right)
{
CancelDrawing();
return;
}
if (isDrawing)
{
if (isDrawEntity)
{
currentShape = new EntityShape();
((EntityShape)currentShape).type = DrawingShapeState;
}
if (isDrawingAtt && AffectingShape != null)
{
if (AffectingShape is AttributeShape && ((AttributeShape)AffectingShape).isComposite && ((AttributeShape)AffectingShape).type != AttributeType.Derived && DrawingShapeState == AttributeType.Child)
{
currentShape = new AttributeShape();
((AttributeShape)currentShape).type = AttributeType.Simple;
((AttributeShape)currentShape).isComposite = false;
((AttributeShape)AffectingShape).addAttribute((AttributeShape)currentShape);
}
else
{
if ((AffectingShape is EntityShape || AffectingShape is RelationshipShape) && DrawingShapeState != AttributeType.Child)
{
currentShape = new AttributeShape();
if (DrawingShapeState == AttributeType.Key)
((AttributeShape)currentShape).allowNull = false;
((AttributeShape)currentShape).type = DrawingShapeState;
if (AffectingShape is EntityShape)
{
((EntityShape)AffectingShape).addAttribute((AttributeShape)currentShape);
}
else if (AffectingShape is RelationshipShape)
{
RelationshipShape relshape = (RelationshipShape)AffectingShape;
if ((relshape.cardinalities[0].MaxCardinality != -1 || relshape.cardinalities[1].MaxCardinality != -1) && ((AttributeShape)currentShape).type == AttributeType.Key)
{
DevExpress.XtraEditors.XtraMessageBox.Show("Relationship couldn't have an Identifier Attribute");
currentShape = null;
}
else
relshape.addAttribute((AttributeShape)currentShape);
}
}
}
}
if ((isDrawEntity || isDrawSubType || (isDrawingAtt && AffectingShape != null)) && currentShape != null)
{
Point mouse = this.PointToClient(Control.MousePosition);
currentShape.CenterPoint = mouse;
this.Controls.Add(currentShape);
shapeDoubleClick(currentShape, e);
}
else
{
//đang vẽ sub type
if (isDrawSubType && AffectingShape != null)
{
if (AffectingShape is EntityShape)
{
CreateSubTypeConnector((EntityShape)AffectingShape);
}
}
//đang vẽ relationship (không vẽ shape, vẽ đoạn nối 2 entity)
//phải click lên control, click lên panel thì sai, không cho vẽ nữa
CancelDrawing();
}
}
//click panel mà không phải là đang drawing
else
{
//mark flag để vẽ rubber band
isSelecting = true;
First_Mouse_Pos.X = e.X;
First_Mouse_Pos.Y = e.Y;
Last_Mouse_Pos.X = -1;
Last_Mouse_Pos.Y = -1;
}
if (!isNaming)
{
AffectingShape = null;
this.Invalidate();
}
}
//Delete and Undo
public bool deleteAffectingShape()
{
if (AffectingShape != null && !isDrawing && !isNaming && !isMoving && !isResizing && !isSelecting)
{
if (AffectingShape.GetType().Name == "EntityShape")
{
if (DevExpress.XtraEditors.XtraMessageBox.Show("Are you sure want to delete " + AffectingShape.sName + " Entity ?", "Confirm", MessageBoxButtons.YesNo, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1) == DialogResult.Yes)
{
saveUndoList();
AffectingShape.Dispose();
AffectingShape = null;
this.Invalidate();
}
}
else
{
saveUndoList();
AffectingShape.Dispose();
AffectingShape = null;
this.Invalidate();
}
return true;
}
return false;
}
//Shape (User control) Event
void shapeMouseDown(object sender, MouseEventArgs e)
{
if (isNaming)
{
AffectingShape.endEditName();
return;
}
ShapeBase currentCtrl = (ShapeBase)sender;
//Đang vẽ relationship
if (e.Button == MouseButtons.Left && isDrawing && isDrawRelationship)
{
//Nếu chưa có điểm đầu
if (First_Mouse_Click == false)
{
if (currentCtrl is EntityShape)
{
First_Mouse_Click = true;
//Tracking First position for Drawing Virtual Line
First_Mouse_Pos.X = e.X + currentCtrl.Location.X;
First_Mouse_Pos.Y = e.Y + currentCtrl.Location.Y;
FirstEntity = (EntityShape)currentCtrl;
if (degreeOfRelationship == 1)
{
//Create Unary Relationship
CreateUnaryRelationship();
CancelDrawing();
return;
}
}
else
CancelDrawing();
}
else
{
//Ðã có điểm đầu, click lần thứ 2
if (Second_Mouse_Click == false)
{
if (currentCtrl is EntityShape)
{
Second_Mouse_Click = true;
SecondEntity = (EntityShape)currentCtrl;
if (degreeOfRelationship == 2)
{
//Create Binary Relationship
CreateBinaryRelationship();
CancelDrawing();
return;
}
}
else
CancelDrawing();
}
else
{
//Ðã có điểm thứ 1 và 2, click lần 3
if (Third_Mouse_Click == false)
{
if (currentCtrl is EntityShape)
{
Third_Mouse_Click = true;
ThirdEntity = (EntityShape)currentCtrl;
if (degreeOfRelationship == 3)
{
//Create Ternary Relationship
CreateTernaryRelationship();
CancelDrawing();
return;
}
}
else
CancelDrawing();
}
else
CancelDrawing();
}
}
}//End Ðang vẽ relationship
//Lưu vết lại Shape đang được tác động (Click)
//và set cho shape đó nằm trên cùng
AffectingShape = currentCtrl;
this.Controls.SetChildIndex(AffectingShape, 0);
// click trái: Resizing hoặc Moving hoặc Selecting
// Nếu chuột ở mép (border) của Shape thì là resizing
// bình thường thì moving
if (e.Button == MouseButtons.Left && !isDrawing)
{
Last_Mouse_Pos.X = e.X;
Last_Mouse_Pos.Y = e.Y;
if ((e.X + 5) > currentCtrl.Width || (e.Y + 5) > currentCtrl.Height)
isResizing = true;
else
isMoving = true;
}
// click phải: hiện context menu
else if (e.Button == MouseButtons.Right)
{
ContextMenuStrip ctmn = getContexMenuForControl(currentCtrl);
ctmn.Show(currentCtrl, new Point(e.X, e.Y));
}
this.Invalidate();
}
//Generate Context Menu
private ContextMenuStrip getContexMenuForControl(ShapeBase control)
{
ContextMenuStrip ctmn = new ContextMenuStrip();
ToolStripMenuItem del = new ToolStripMenuItem("Delete");
del.Click += new EventHandler(del_Click);
if (control is EntityShape)
{
ToolStripMenuItem StrongEntity = new ToolStripMenuItem("Strong Entity Type");
StrongEntity.Click += new EventHandler(Change_Type_Click);
ToolStripMenuItem WeakEntity = new ToolStripMenuItem("Weak Entity Type");
WeakEntity.Click += new EventHandler(Change_Type_Click);
ctmn.Items.Add(StrongEntity);
ctmn.Items.Add(WeakEntity);
ctmn.Items.Add(new ToolStripSeparator());
ctmn.Items.Add(del);
}
if (control is RelationshipShape)
{
ToolStripMenuItem NormalRelation = new ToolStripMenuItem("Normal Relationship");
NormalRelation.Click += new EventHandler(Change_Type_Click);
ToolStripMenuItem IdRelation = new ToolStripMenuItem("Identifier Relationship");
IdRelation.Click += new EventHandler(Change_Type_Click);
ToolStripMenuItem AssoRelation = new ToolStripMenuItem("Associative Entity");
AssoRelation.Click += new EventHandler(Change_Type_Click);
ctmn.Items.Add(NormalRelation);
ctmn.Items.Add(IdRelation);
ctmn.Items.Add(AssoRelation);
ctmn.Items.Add(new ToolStripSeparator());
ToolStripMenuItem editRel = new ToolStripMenuItem("Properties");
editRel.Click += new EventHandler(editRel_Click);
ctmn.Items.Add(del);
ctmn.Items.Add(editRel);
}
if (control is AttributeShape && ((AttributeShape)control).isComposite)
{
ToolStripMenuItem KeyAtt = new ToolStripMenuItem("Key Attribute");
KeyAtt.Click += new EventHandler(Change_Type_Click);
ToolStripMenuItem SimpleAtt = new ToolStripMenuItem("Simple Attribute");
SimpleAtt.Click += new EventHandler(Change_Type_Click);
ToolStripMenuItem MultiAtt = new ToolStripMenuItem("Multi-Valued Attribute");
MultiAtt.Click += new EventHandler(Change_Type_Click);
ctmn.Items.Add(SimpleAtt);
ctmn.Items.Add(KeyAtt);
ctmn.Items.Add(MultiAtt);
if (((AttributeShape)control).attributeChilds.Count == 0)
{
ToolStripMenuItem DerivedAtt = new ToolStripMenuItem("Derived Attribute");
DerivedAtt.Click += new EventHandler(Change_Type_Click);
ctmn.Items.Add(DerivedAtt);
}
ctmn.Items.Add(new ToolStripSeparator());
ctmn.Items.Add(del);
}
if (control is SubTypeConnector)
{
ToolStripMenuItem Total = new ToolStripMenuItem("Total Specialization");
Total.Click += new EventHandler(Change_Type_Click);
ToolStripMenuItem Partial = new ToolStripMenuItem("Partial Specialization");
Partial.Click += new EventHandler(Change_Type_Click);
ToolStripMenuItem Disjoint = new ToolStripMenuItem("Disjoint Constraint");
Disjoint.Click += new EventHandler(Change_Type_Click);
ToolStripMenuItem Overlap = new ToolStripMenuItem("Overlap Constraint");
Overlap.Click += new EventHandler(Change_Type_Click);
ctmn.Items.Add(Total);
ctmn.Items.Add(Partial);
ctmn.Items.Add(Disjoint);
ctmn.Items.Add(Overlap);
ctmn.Items.Add(new ToolStripSeparator());
ToolStripMenuItem editSub = new ToolStripMenuItem("Properties");
editSub.Click += new EventHandler(editSub_Click);
ctmn.Items.Add(del);
ctmn.Items.Add(editSub);
}
return ctmn;
}
public virtual void doDoubleClick(PanelDoubleBuffered pn, ShapeBase ns)
{
parentPanel = pn;
namingShape = ns;
if (parentPanel.isNaming)
{
parentPanel.AffectingShape.endEditName();
return;
}
parentPanel.AffectingShape = ns;
parentPanel.isNaming = true;
txtName = new TextBox();
//cho class con định vị xong rồi add lên shape theo vị trí đó
dinhviTextBox(txtName);
txtName.Text = sName; //hiện tên cũ
sName = "";
this.Invalidate();
this.Controls.Add(txtName);
txtName.SelectAll();
txtName.Focus();
txtName.KeyPress += new System.Windows.Forms.KeyPressEventHandler(txtName_KeyPress);
//Data type cho attribute
if (this is AttributeShape)
{
if (((AttributeShape)this).attributeChilds.Count == 0)
{
ucDataDescription = new DataDescription();
ucDataDescription.Location = new Point(this.Location.X + this.Width + 5, this.Location.Y);
parentPanel.Controls.Add(ucDataDescription);
//Cho USC nằm lên trên.
parentPanel.Controls.SetChildIndex(ucDataDescription, 0);
if (((AttributeShape)this).type == AttributeType.Key)
{
ucDataDescription.chkNull.Enabled = false;
}
if (((AttributeShape)this).dataType != null)
{
ucDataDescription.cboDataType.SelectedItem = ((AttributeShape)this).dataType;
}
if (((AttributeShape)this).dataLength != 0)
{
ucDataDescription.txtLength.Text = ((AttributeShape)this).dataLength.ToString();
}
ucDataDescription.chkNull.Checked = ((AttributeShape)this).allowNull;
if (((AttributeShape)this).description != "")
{
ucDataDescription.txtDescription.Text = ((AttributeShape)this).description;
}
ucDataDescription.btnOK.Click += new EventHandler(btnOK_Click);
}
}
}