/// <summary>
/// Copy fields from this instance to cloned instance drawObject.
/// Called from Clone functions of derived classes.
/// </summary>
protected void FillDrawObjectFields(DrawObject drawObject)
{
drawObject.selected = this.selected;
drawObject.color = this.color;
drawObject.penWidth = this.penWidth;
drawObject.ID = this.ID;
drawObject._brushType = this._brushType;
drawObject._penType = this._penType;
drawObject.drawBrush = this.drawBrush;
drawObject.drawpen = this.drawpen;
drawObject.fillColor = this.fillColor;
}
/// <summary>
/// Add new object to draw area.
/// Function is called when user left-clicks draw area,
/// and one of ToolObject-derived tools is active.
/// </summary>
/// <param name="drawArea"></param>
/// <param name="o"></param>
protected void AddNewObject(DrawArea drawArea, DrawObject o)
{
int al = drawArea.TheLayers.ActiveLayerIndex;
if(drawArea.TheLayers[al].Graphics != null)
drawArea.TheLayers[al].Graphics.UnselectAll();
o.Selected = true;
o.Dirty = true;
drawArea.TheLayers[al].Graphics.Add(o);
drawArea.Capture = true;
drawArea.Refresh();
}
/// <summary>
/// Add new object to draw area.
/// Function is called when user left-clicks draw area,
/// and one of ToolObject-derived tools is active.
/// </summary>
/// <param name="drawArea"></param>
/// <param name="o"></param>
protected void AddNewObject(DrawArea drawArea, DrawObject o)
{
int al = drawArea.TheLayers.ActiveLayerIndex;
if (drawArea.TheLayers[al].Graphics != null)
{
drawArea.TheLayers[al].Graphics.UnselectAll();
}
o.Selected = true;
o.Dirty = true;
drawArea.TheLayers[al].Graphics.Add(o);
drawArea.Capture = true;
drawArea.Refresh();
}
/// <summary>
/// Returns -1, 0, +1 to represent the relative order of the object being compared with this object
/// </summary>
/// <param name="obj">DrawObject being compared</param>
/// <returns>-1 if the object is less (further back) than this object.
/// 0 if the object is equal to this object (same level graphically).
/// 1 if the object is greater (closer to the front) than this object.</returns>
public int CompareTo(object obj)
{
DrawObject d = obj as DrawObject;
int x = 0;
if (d.ZOrder == this.ZOrder)
{
x = 0;
}
else if (d.ZOrder > this.ZOrder)
{
x = -1;
}
else
{
x = 1;
}
return(x);
}
// Replace objects in graphicsList with objects from list
private void ReplaceObjects(GraphicsList graphicsList, List <DrawObject> list)
{
for (int i = 0; i < graphicsList.Count; i++)
{
DrawObject replacement = null;
foreach (DrawObject o in list)
{
if (o.ID == graphicsList[i].ID)
{
replacement = o;
break;
}
}
if (replacement != null)
{
graphicsList.Replace(i, replacement);
}
}
}
/// <summary>
/// Copy fields from this instance to cloned instance drawObject.
/// Called from Clone functions of derived classes.
/// </summary>
protected void FillDrawObjectFields(DrawObject drawObject)
{
drawObject.selected = this.selected;
drawObject.color = this.color;
drawObject.penWidth = this.penWidth;
drawObject.ID = this.ID;
drawObject._brushType = this._brushType;
drawObject._penType = this._penType;
drawObject.drawBrush = this.drawBrush;
drawObject.drawpen = this.drawpen;
drawObject.fillColor = this.fillColor;
}
/// <summary>
/// Left mouse button is pressed
/// </summary>
/// <param name="drawArea"></param>
/// <param name="e"></param>
public override void OnMouseDown(DrawArea drawArea, MouseEventArgs e)
{
commandChangeState = null;
wasMove = false;
selectMode = SelectionMode.None;
Point point = drawArea.BackTrackMouse(new Point(e.X, e.Y));
// Test for resizing (only if control is selected, cursor is on the handle)
int al = drawArea.TheLayers.ActiveLayerIndex;
int n = drawArea.TheLayers[al].Graphics.SelectionCount;
for (int i = 0; i < n; i++)
{
DrawObject o = drawArea.TheLayers[al].Graphics.GetSelectedObject(i);
int handleNumber = o.HitTest(point);
if (handleNumber > 0)
{
selectMode = SelectionMode.Size;
// keep resized object in class members
resizedObject = o;
resizedObjectHandle = handleNumber;
// Since we want to resize only one object, unselect all other objects
drawArea.TheLayers[al].Graphics.UnselectAll();
o.Selected = true;
commandChangeState = new CommandChangeState(drawArea.TheLayers);
break;
}
}
// Test for move (cursor is on the object)
if (selectMode == SelectionMode.None)
{
int n1 = drawArea.TheLayers[al].Graphics.Count;
DrawObject o = null;
for (int i = 0; i < n1; i++)
{
if (drawArea.TheLayers[al].Graphics[i].HitTest(point) == 0)
{
o = drawArea.TheLayers[al].Graphics[i];
break;
}
}
if (o != null)
{
selectMode = SelectionMode.Move;
// Unselect all if Ctrl is not pressed and clicked object is not selected yet
if ((Control.ModifierKeys & Keys.Control) == 0 && !o.Selected)
drawArea.TheLayers[al].Graphics.UnselectAll();
// Select clicked object
o.Selected = true;
commandChangeState = new CommandChangeState(drawArea.TheLayers);
drawArea.Cursor = Cursors.SizeAll;
}
}
// Net selection
if (selectMode == SelectionMode.None)
{
// click on background
if ((Control.ModifierKeys & Keys.Control) == 0)
drawArea.TheLayers[al].Graphics.UnselectAll();
selectMode = SelectionMode.NetSelection;
drawArea.DrawNetRectangle = true;
}
lastPoint.X = point.X;
lastPoint.Y = point.Y;
startPoint.X = point.X;
startPoint.Y = point.Y;
drawArea.Capture = true;
drawArea.NetRectangle = DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint);
drawArea.Refresh();
}
/// <summary>
/// Right mouse button is released
/// </summary>
/// <param name="drawArea"></param>
/// <param name="e"></param>
public override void OnMouseUp(DrawArea drawArea, MouseEventArgs e)
{
int al = drawArea.TheLayers.ActiveLayerIndex;
if (selectMode == SelectionMode.NetSelection)
{
// Group selection
drawArea.TheLayers[al].Graphics.SelectInRectangle(drawArea.NetRectangle);
selectMode = SelectionMode.None;
drawArea.DrawNetRectangle = false;
}
if (resizedObject != null)
{
// after resizing
resizedObject.Normalize();
resizedObject = null;
}
drawArea.Capture = false;
drawArea.Refresh();
if (commandChangeState != null && wasMove)
{
// Keep state after moving/resizing and add command to history
commandChangeState.NewState(drawArea.TheLayers);
drawArea.AddCommandToHistory(commandChangeState);
commandChangeState = null;
}
lastPoint = drawArea.BackTrackMouse(e.Location);
}
/// <summary>
/// Replace object in specified place.
/// Used for Undo.
/// </summary>
public void Replace(int index, DrawObject obj)
{
if (index >= 0 && index < graphicsList.Count)
{
graphicsList.RemoveAt(index);
graphicsList.Insert(index, obj);
}
}
public void Add(DrawObject obj)
{
graphicsList.Sort();
foreach(DrawObject o in graphicsList)
o.ZOrder++;
graphicsList.Insert(0, obj);
}
/// <summary>
/// Left mouse button is pressed
/// </summary>
/// <param name="drawArea"></param>
/// <param name="e"></param>
public override void OnMouseDown(DrawArea drawArea, MouseEventArgs e)
{
commandChangeState = null;
wasMove = false;
selectMode = SelectionMode.None;
Point point = drawArea.BackTrackMouse(new Point(e.X, e.Y));
// Test for resizing (only if control is selected, cursor is on the handle)
int al = drawArea.TheLayers.ActiveLayerIndex;
int n = drawArea.TheLayers[al].Graphics.SelectionCount;
for (int i = 0; i < n; i++)
{
DrawObject o = drawArea.TheLayers[al].Graphics.GetSelectedObject(i);
int handleNumber = o.HitTest(point);
if (handleNumber > 0)
{
selectMode = SelectionMode.Size;
// keep resized object in class members
resizedObject = o;
resizedObjectHandle = handleNumber;
// Since we want to resize only one object, unselect all other objects
drawArea.TheLayers[al].Graphics.UnselectAll();
o.Selected = true;
commandChangeState = new CommandChangeState(drawArea.TheLayers);
break;
}
}
// Test for move (cursor is on the object)
if (selectMode == SelectionMode.None)
{
int n1 = drawArea.TheLayers[al].Graphics.Count;
DrawObject o = null;
for (int i = 0; i < n1; i++)
{
if (drawArea.TheLayers[al].Graphics[i].HitTest(point) == 0)
{
o = drawArea.TheLayers[al].Graphics[i];
break;
}
}
if (o != null)
{
selectMode = SelectionMode.Move;
// Unselect all if Ctrl is not pressed and clicked object is not selected yet
if ((Control.ModifierKeys & Keys.Control) == 0 && !o.Selected)
{
drawArea.TheLayers[al].Graphics.UnselectAll();
}
// Select clicked object
o.Selected = true;
commandChangeState = new CommandChangeState(drawArea.TheLayers);
drawArea.Cursor = Cursors.SizeAll;
}
}
// Net selection
if (selectMode == SelectionMode.None)
{
// click on background
if ((Control.ModifierKeys & Keys.Control) == 0)
{
drawArea.TheLayers[al].Graphics.UnselectAll();
}
selectMode = SelectionMode.NetSelection;
drawArea.DrawNetRectangle = true;
}
lastPoint.X = point.X;
lastPoint.Y = point.Y;
startPoint.X = point.X;
startPoint.Y = point.Y;
drawArea.Capture = true;
drawArea.NetRectangle = DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint);
drawArea.Refresh();
}
// Create this command with DrawObject instance added to the list
public CommandAdd(DrawObject drawObject) : base()
{
// Keep copy of added object
this.drawObject = drawObject.Clone();
}
// Create this command with DrawObject instance added to the list
public CommandAdd(DrawObject drawObject) : base()
{
// Keep copy of added object
this.drawObject = drawObject.Clone();
}
/// <summary>
/// Right-click handler
/// </summary>
/// <param name="e"></param>
private void OnContextMenu(MouseEventArgs e)
{
// Change current selection if necessary
Point point = BackTrackMouse(new Point(e.X, e.Y));
int al = _layers.ActiveLayerIndex;
int n = _layers[al].Graphics.Count;
DrawObject o = null;
for (int i = 0; i < n; i++)
{
if (_layers[al].Graphics[i].HitTest(point) == 0)
{
o = _layers[al].Graphics[i];
break;
}
}
if (o != null)
{
if (!o.Selected)
{
_layers[al].Graphics.UnselectAll();
}
// Select clicked object
o.Selected = true;
}
else
{
_layers[al].Graphics.UnselectAll();
}
Refresh();
// Show context menu.
// Make ugly trick which saves a lot of code.
// Get menu items from Edit menu in main form and
// make context menu from them.
// These menu items are handled in the parent form without
// any additional efforts.
//MainMenu mainMenu = Owner.Menu; // Main menu
//MenuItem editItem = mainMenu.MenuItems[1]; // Edit submenu
//// Make array of items for ContextMenu constructor
//// taking them from the Edit submenu
//MenuItem[] items = new MenuItem[editItem.MenuItems.Count];
//for ( int i = 0; i < editItem.MenuItems.Count; i++ )
//{
// items[i] = editItem.MenuItems[i];
//}
//Owner.SetStateOfControls(); // enable/disable menu items
//// Create and show context menu
//ContextMenu menu = new ContextMenu(items);
//menu.Show(this, point);
//// Restore items in the Edit menu (without this line Edit menu
//// is empty after forst right-click)
//editItem.MergeMenu(menu);
}