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#region Header
/* --------------------------------------------------------------------------------------------------------------
* I Software Innovations
* --------------------------------------------------------------------------------------------------------------
* SVG Artieste 2.0
* --------------------------------------------------------------------------------------------------------------
* File : GraphicsList.cs
* Author : ajaysbritto@yahoo.com
* Date : 20/03/2010
* --------------------------------------------------------------------------------------------------------------
* Change Log
* --------------------------------------------------------------------------------------------------------------
* Author Comments
*/
#endregion Header
namespace Draw
{
using System;
using System.Collections;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using SVGLib;
using Command;
/// <summary>
/// List of graphic objects
/// </summary>
[Serializable]
public class GraphicsList// : ISerializable
{
#region Fields
private readonly ArrayList _graphicsList;
private readonly ArrayList _inMemoryList;
private readonly UndoRedo _undoRedo;
private bool _isCut;
#endregion Fields
#region Constructors
public GraphicsList()
{
_graphicsList = new ArrayList();
_inMemoryList = new ArrayList();
_undoRedo = new UndoRedo();
}
#endregion Constructors
#region Properties
/// <summary>
/// Count and this [nIndex] allow to read all graphics objects
/// from GraphicsList in the loop.
/// </summary>
public int Count
{
get
{
return _graphicsList.Count;
}
}
/// <summary>
/// Gets or Sets the description
/// </summary>
public String Description { get; set; }
/// <summary>
/// SelectedCount and GetSelectedObject allow to read
/// selected objects in the loop
/// </summary>
public int SelectionCount
{
get
{
int n = 0;
foreach (DrawObject o in _graphicsList)
{
if ( o.Selected )
n++;
}
return n;
}
}
#endregion Properties
#region Indexers
public DrawObject this[int index]
{
get
{
if ( index < 0 || index >= _graphicsList.Count )
return null;
return ((DrawObject)_graphicsList[index]);
}
}
#endregion Indexers
#region Methods
public void Add(DrawObject obj)
{
// insert to the top of z-order
_graphicsList.Insert(0, obj);
var create = new CreateCommand(obj, _graphicsList);
_undoRedo.AddCommand(create);
}
// ************** Read from SVG
public void AddFromSvg(SvgElement ele)
{
while (ele != null)
{
DrawObject o = CreateDrawObject(ele);
if (o != null)
Add(o);
SvgElement child = ele.getChild();
while (child != null)
{
AddFromSvg(child);
child = child.getNext();
}
ele = ele.getNext();
}
}
public bool AreItemsInMemory()
{
return (_inMemoryList.Count > 0);
}
/// <summary>
/// Clear all objects in the list
/// </summary>
/// <returns>
/// true if at least one object is deleted
/// </returns>
public bool Clear()
{
bool result = (_graphicsList.Count > 0);
_graphicsList.Clear();
return result;
}
/// <summary>
/// Cut selected items
/// </summary>
/// <returns>
/// true if at least one object is cut
/// </returns>
public void CutSelection()
{
int i;
int n = _graphicsList.Count;
_inMemoryList.Clear();
for (i = n - 1; i >= 0; i--)
{
if (((DrawObject)_graphicsList[i]).Selected)
{
_inMemoryList.Add(_graphicsList[i]);
}
}
_isCut = true;
var cmd = new CutCommand(_graphicsList, _inMemoryList);
cmd.Execute();
_undoRedo.AddCommand(cmd);
}
/// <summary>
/// Copies selected items
/// </summary>
/// <returns>
/// true if at least one object is copied
/// </returns>
public bool CopySelection()
{
bool result = false;
int n = _graphicsList.Count;
for (int i = n - 1; i >= 0; i--)
{
if (((DrawObject)_graphicsList[i]).Selected)
{
_inMemoryList.Clear();
_inMemoryList.Add(_graphicsList[i]);
result = true;
_isCut = false;
}
}
return result;
}
/// <summary>
/// Paste selected items
/// </summary>
/// <returns>
/// true if at least one object is pasted
/// </returns>
public void PasteSelection()
{
int n = _inMemoryList.Count;
UnselectAll();
if (n > 0)
{
var tempList = new ArrayList();
int i;
for (i = n - 1; i >= 0; i--)
{
tempList.Add(((DrawObject)_inMemoryList[i]).Clone());
}
if (_inMemoryList.Count > 0)
{
var cmd = new PasteCommand(_graphicsList, tempList);
cmd.Execute();
_undoRedo.AddCommand(cmd);
//If the items are cut, we will not delete it
if (_isCut)
_inMemoryList.Clear();
}
}
}
/// <summary>
/// Delete selected items
/// </summary>
/// <returns>
/// true if at least one object is deleted
/// </returns>
public bool DeleteSelection()
{
var cmd = new DeleteCommand(_graphicsList);
cmd.Execute();
_undoRedo.AddCommand(cmd);
return true;
}
public void Draw(Graphics g)
{
int n = _graphicsList.Count;
DrawObject o;
// Enumerate list in reverse order
// to get first object on the top
for (int i = n - 1; i >= 0; i-- )
//for (int i = 0; i < graphicsList.Count; i++ )
{
o = (DrawObject)_graphicsList[i];
o.Draw(g);
if ( o.Selected )
{
o.DrawTracker(g);
}
}
}
public List<DrawObject> GetAllSelected()
{
var selectionList = new List<DrawObject>();
foreach (DrawObject o in _graphicsList)
{
if (o.Selected)
selectionList.Add(o);
}
return selectionList;
}
public DrawObject GetFirstSelected()
{
foreach ( DrawObject o in _graphicsList )
{
if ( o.Selected )
return o;
}
return null;
}
public DrawObject GetSelectedObject(int index)
{
int n = -1;
foreach (DrawObject o in _graphicsList)
{
if ( o.Selected )
{
n++;
if ( n == index )
return o;
}
}
return null;
}
/// <summary>
/// Save object to serialization stream
/// </summary>
/// <param name="scale"></param>
//[SecurityPermissionAttribute(SecurityAction.Demand, SerializationFormatter=true)]
public string GetXmlString(SizeF scale)
{
string sXml = "";
int n = _graphicsList.Count;
for (int i = n - 1; i >= 0; i-- )
{
sXml += ((DrawObject)_graphicsList[i]).GetXmlStr(scale);
}
return sXml;
}
public bool IsAnythingSelected()
{
foreach (DrawObject o in _graphicsList)
if (o.Selected)
return true;
return false;
}
public void Move(ArrayList movedItemsList, PointF delta)
{
var cmd = new MoveCommand(movedItemsList, delta);
_undoRedo.AddCommand(cmd);
}
/// <summary>
/// Move selected items to back (end of the list)
/// </summary>
/// <returns>
/// true if at least one object is moved
/// </returns>
public bool MoveSelectionToBack()
{
int n = _graphicsList.Count;
var tempList = new ArrayList();
for (int i = n - 1; i >= 0; i--)
{
if (((DrawObject)_graphicsList[i]).Selected)
{
tempList.Add(_graphicsList[i]);
}
}
var cmd = new SendToBackCommand(_graphicsList, tempList);
cmd.Execute();
_undoRedo.AddCommand(cmd);
return true;
}
/// <summary>
/// Move selected items to front (beginning of the list)
/// </summary>
/// <returns>
/// true if at least one object is moved
/// </returns>
public bool MoveSelectionToFront()
{
int n = _graphicsList.Count;
var tempList = new ArrayList();
for (int i = n - 1; i >= 0; i-- )
{
if ( ((DrawObject)_graphicsList[i]).Selected )
{
tempList.Add(_graphicsList[i]);
}
}
var cmd = new BringToFrontCommand(_graphicsList, tempList);
cmd.Execute();
_undoRedo.AddCommand(cmd);
return true;
}
/// <summary>
/// Property Changed
/// </summary>
/// <returns>
/// void
/// </returns>
public void PropertyChanged(GridItem itemChanged, object oldVal)
{
int i;
int n = _graphicsList.Count;
var tempList = new ArrayList();
for (i = n - 1; i >= 0; i--)
{
if (((DrawObject)_graphicsList[i]).Selected)
{
tempList.Add(_graphicsList[i]);
}
}
var cmd = new PropertyChangeCommand(tempList,itemChanged, oldVal);
_undoRedo.AddCommand(cmd);
}
public void Redo()
{
_undoRedo.Redo();
}
public void Resize(SizeF newscale,SizeF oldscale)
{
foreach (DrawObject o in _graphicsList)
o.Resize(newscale,oldscale);
}
public void ResizeCommand(DrawObject obj, PointF old, PointF newP, int handle)
{
var cmd = new ResizeCommand(obj,old, newP, handle);
_undoRedo.AddCommand(cmd);
}
public void SelectAll()
{
foreach (DrawObject o in _graphicsList)
{
o.Selected = true;
}
}
public void SelectInRectangle(RectangleF rectangle)
{
UnselectAll();
foreach (DrawObject o in _graphicsList)
{
if ( o.IntersectsWith(rectangle) )
o.Selected = true;
}
}
// *************************************************
public void Undo()
{
_undoRedo.Undo();
}
public void UnselectAll()
{
foreach (DrawObject o in _graphicsList)
{
o.Selected = false;
}
}
DrawObject CreateDrawObject(SvgElement svge)
{
DrawObject o = null;
switch (svge.getElementType())
{
case SvgElement._SvgElementType.typeLine:
o = DrawLine.Create((SvgLine )svge);
break;
case SvgElement._SvgElementType.typeRect:
o = DrawRectangle.Create((SvgRect )svge);
break;
case SvgElement._SvgElementType.typeEllipse:
o = DrawEllipse.Create((SvgEllipse )svge);
break;
case SvgElement._SvgElementType.typePolyline:
o = DrawPolygon.Create((SvgPolyline )svge);
break;
case SvgElement._SvgElementType.typeImage:
o = DrawImage.Create((SvgImage )svge);
break;
case SvgElement._SvgElementType.typeText:
o = DrawText.Create((SvgText )svge);
break;
case SvgElement._SvgElementType.typeGroup:
o = CreateGroup((SvgGroup )svge);
break;
case SvgElement._SvgElementType.typePath:
o = DrawPath.Create((SvgPath)svge);
break;
case SvgElement._SvgElementType.typeDesc:
Description = ((SvgDesc)svge).Value;
break;
default:
break;
}
return o;
}
DrawObject CreateGroup(SvgGroup svg)
{
DrawObject o = null;
SvgElement child = svg.getChild();
if (child != null)
AddFromSvg(child);
return o;
}
#endregion Methods
}
}
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He is a Microsoft technology enthusiast, who wish to create applications which others find useful.He loves making small tools and getting involved in architecting bigger systems.
He is currently working as a professional developer in a software development firm in .Net technologies.
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