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SVG Artiste - An SVG Editor

, 3 Aug 2010 CPOL
A Vector based tool to create and edit SVG images
SvgArtiste.exe
SvgArtiste.vshost.exe.manifest
SVGLib.dll
Crom.Controls.dll
Draw.dll
mercialago18.svg
SVGArtiste.svg
SVGLib
SVGLib.csproj.user
SVGLib.ndoc
SvgArtiste2.suo
Crom.Controls
Dock16x16.bmp
Internal
Docking
ControlCollections
Controls
DockButtons
Forms
Engine
Enums
EventArgs
Helpers
SharedHelpers
Properties
Public
Docking
Enums
EventArgs
Helpers
Renderers
TabbedDocument
Controls
Enums
Helpers
Renderers
Base
Draw
Command
Draw.csproj.user
RulerControl
Ruler.bmp
SvgArtiste2
Properties
Resources
cancel.png
Ellipse.cur
exit.png
exit1.png
Line.cur
new.png
new_page.png
open.png
open1.png
pan.cur
pan_close.cur
Pencil.cur
Rectangle.cur
save.png
save_as.png
save_as1.png
Text.cur
SVGArtiste.csproj.user
Tools
Forms
UserControls
/***************************************************************************
 *   CopyRight (C) 2009 by Cristinel Mazarine                              *
 *   Author:   Cristinel Mazarine                                          *
 *   Contact:  cristinel@osec.ro                                           *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the Crom Free License as published by           *
 *   the SC Crom-Osec SRL; version 1 of the License                        *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   Crom Free License for more details.                                   *
 *                                                                         *
 *   You should have received a copy of the Crom Free License along with   *
 *   this program; if not, write to the contact@osec.ro                    *
 ***************************************************************************/

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;

namespace Crom.Controls.Docking
{
   /// <summary>
   /// Dock guider
   /// </summary>
   internal class DockGuider : Disposable
   {
      #region Fields

      private FormWrapper              _host                            = null;
      private DockGuiderWrapper        _guider                          = null;
      private Control                  _movedWindow                     = null;
      private zAllowedDock             _allowedDock                     = zAllowedDock.None;

      #endregion Fields

      #region Instance

      /// <summary>
      /// Constructor
      /// </summary>
      /// <param name="host">host window</param>
      public DockGuider(FormWrapper host)
      {
         _host = host;
         _host.SizeChanged    += OnHostSizeChanged;
         _host.Move           += OnHostMoved;
         _host.VisibleChanged += OnHostVisibleChanged;

         _guider = new DockGuiderWrapper(_host);
      }

      #endregion Instance

      #region Public section

      /// <summary>
      /// Event raised when apply dock is requested
      /// </summary>
      public event EventHandler<DockControlEventArgs> ApplyDock;

      /// <summary>
      /// Begin the movement of a window
      /// </summary>
      /// <param name="window">moved window</param>
      /// <param name="allowedDock">allowed dock for the window</param>
      public void BeginWindowMovement(Control window, zAllowedDock allowedDock)
      {
         if (_movedWindow != null)
         {
            throw new InvalidOperationException("Err001");
         }

         _movedWindow = window;
         _allowedDock = allowedDock;

         GuideForm();
      }

      /// <summary>
      /// Move a window using mouse
      /// </summary>
      public void MoveWindowByMouse()
      {
         if (_movedWindow == null)
         {
            return;
         }

         zAllowedDock allowedDock = _allowedDock;
         Point screenLocation     = Control.MousePosition;
         DockableContainer containerUnderMouse = GetContainerUnderMouse(screenLocation);

         Rectangle fillRectangle  = FormWrapper.GetFillRectangleFromPoint(screenLocation, containerUnderMouse, _host);

         if (fillRectangle.IsEmpty)
         {
            _guider.HideCenterGuider();
         }
         else
         {
            if (containerUnderMouse == null)
            {
               _guider.ShowCenterGuider(allowedDock, fillRectangle);
            }
            else
            {
               allowedDock = zAllowedDock.All;
               _guider.ShowCenterGuider(allowedDock, fillRectangle);
            }
         }


         GuidedDockResult result = _guider.GetDockResult(allowedDock, screenLocation);

         if (result.DockMode == zDockMode.Outer && result.Dock != DockStyle.None)
         {
            Rectangle bounds = OuterDockPreviewEngine.GetPreviewBounds(result.Dock, _host, _movedWindow);
            _guider.ShowPreviewPanel(bounds);
         }
         else if (result.DockMode == zDockMode.Inner && result.Dock != DockStyle.None)
         {
            Rectangle freeBounds = FormWrapper.GetFillScreenRectangle(_host);
            Rectangle bounds     = InnerDockPreviewEngine.GetPreviewBounds(result.Dock, _movedWindow, containerUnderMouse, freeBounds);
            if (bounds.IsEmpty)
            {
               _guider.HidePreviewPanel();
            }
            else
            {
               _guider.ShowPreviewPanel(bounds);
            }
         }
         else
         {
            _guider.HidePreviewPanel();
         }
      }

      /// <summary>
      /// Get leaf from point
      /// </summary>
      /// <param name="screenLocation">screen location</param>
      /// <param name="except">control excepted from search</param>
      /// <returns>leaf</returns>
      public DockableContainer GetLeafDockedContainerFromPoint(Point screenLocation, Control except)
      {
         return _host.GetLeafDockedContainerFromPoint(screenLocation, except);
      }

      /// <summary>
      /// End window movement
      /// </summary>
      public void EndWindowMovement()
      {
         if (_movedWindow == null)
         {
            return;
         }

         Point screenLocation    = Control.MousePosition;
         zAllowedDock allowedDock = _allowedDock;
         if (GetContainerUnderMouse(screenLocation) != null)
         {
            allowedDock = zAllowedDock.All;
         }

         GuidedDockResult result = _guider.GetDockResult(allowedDock, screenLocation);
         Control movedControl    = _movedWindow;

         StopMovement();

         _movedWindow = null;

         EventHandler<DockControlEventArgs> handler = ApplyDock;
         if (handler != null && result.Dock != DockStyle.None)
         {
            DockControlEventArgs args = new DockControlEventArgs(movedControl, result.Dock, result.DockMode);
            handler(this, args);
         }
      }

      /// <summary>
      /// Cancel the window movement
      /// </summary>
      /// <param name="window">moved window must be same as provided in BeginWindowMovement</param>
      public void CancelWindowMovement()
      {
         StopMovement();
         
         _movedWindow = null;
      }

      #endregion Public section

      #region Protected section

      /// <summary>
      /// Dispose this instance
      /// </summary>
      /// <param name="fromIDisposableDispose">call from IDisposable.Dispsose</param>
      protected override void Dispose(bool fromIDisposableDispose)
      {
         if (fromIDisposableDispose)
         {
            _movedWindow = null;

            if (_guider != null)
            {
               _guider.Dispose();
               _guider = null;
            }
         }
      }

      #endregion Protected section

      #region Private section
      #region Received events

      /// <summary>
      /// On host moved
      /// </summary>
      /// <param name="sender">sender of the event</param>
      /// <param name="e">event argument</param>
      private void OnHostMoved(object sender, EventArgs e)
      {
         if (_movedWindow != null)
         {
            GuideForm();
         }
      }

      /// <summary>
      /// On host size changed
      /// </summary>
      /// <param name="sender">sender of the event</param>
      /// <param name="e">event argument</param>
      private void OnHostSizeChanged(object sender, EventArgs e)
      {
         if (_movedWindow != null)
         {
            GuideForm();
         }
      }

      /// <summary>
      /// On host visibility changed
      /// </summary>
      /// <param name="sender">sender of the event</param>
      /// <param name="e">event argument</param>
      private void OnHostVisibleChanged(object sender, EventArgs e)
      {
         if (_host.Visible)
         {
            _guider.Initialize();
         }
      }

      #endregion Received events

      /// <summary>
      /// Show the guiders
      /// </summary>
      private void ShowMarginGuiders()
      {
         Rectangle marginBounds = _host.ScreenClientRectangle;
         if (marginBounds.IsEmpty == false)
         {
            _guider.ShowMarginsGuider(_allowedDock, marginBounds);
         }
      }

      /// <summary>
      /// Guide the form movement
      /// </summary>
      private void GuideForm()
      {
         ShowMarginGuiders();
      }

      /// <summary>
      /// Stop the form movement
      /// </summary>
      private void StopMovement()
      {
         _guider.HideCenterGuider();
         _guider.HideMarginsGuider();
         _guider.HidePreviewPanel();
      }

      /// <summary>
      /// Get container under mouse
      /// </summary>
      /// <param name="screenLocation">screen location</param>
      /// <returns>container under mouse</returns>
      private DockableContainer GetContainerUnderMouse(Point screenLocation)
      {
         Control underMouse = GetLeafDockedContainerFromPoint(screenLocation, _movedWindow);
         while (underMouse != null)
         {
            if (underMouse == _movedWindow)
            {
               underMouse = null;
               break;
            }

            if (underMouse as DockableContainer != null)
            {
               break;
            }

            underMouse = underMouse.Parent;
         }

         DockableContainer containerUnderMouse = (DockableContainer)underMouse;
         if (containerUnderMouse != null)
         {
            if (containerUnderMouse.SingleChild == null)
            {
               containerUnderMouse = null;
            }
            if (containerUnderMouse.SingleChild.AllowedDock != _allowedDock)
            {
               containerUnderMouse = null;
            }
         }

         return containerUnderMouse;
      }

      #endregion Private section
   }
}

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About the Author

Ajay Britto
Engineer
Singapore Singapore
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.

He likes reading technical blogs, contributing to opensource and most importantly, enjoying life.

His ambition is to be an impressive software maker.

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