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SVG Artiste - An SVG Editor

, 3 Aug 2010
A Vector based tool to create and edit SVG images
SVGArtiste2_exe.zip
SVGArtiste2_SampleSVGDrawings.zip
SVGArtiste2_src.zip
SVGLib
SVGLib.csproj.user
SVGLib.ndoc
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
Settings.settings
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.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

namespace Crom.Controls.Docking
{
   /// <summary>
   /// Implementation of title bar renderer
   /// </summary>
   internal class TitleBarRenderer
   {
      #region Fields

      private bool                  _showCloseButton                 = true;
      private bool                  _showAutohideButton              = false;
      private bool                  _showContextMenuButton           = true;

      private int                   _contentTopOffset                = 0;
      private bool                  _autohide                        = false;
      private int                   _titleBarButtonIndexUnderMouse   = -1;

      private Rectangle             _titleBarBounds                  = new Rectangle();

      private Icon                  _icon                            = null;
      private string                _text                            = string.Empty;

      private Color                 _color1                          = SystemColors.Control;
      private Color                 _color2                          = Color.White;
      private Color                 _selectedColor1                  = Color.DarkGray;
      private Color                 _selectedColor2                  = Color.White;
      private Color                 _textColor                       = Color.Black;

      #endregion Fields

      #region Instance

      /// <summary>
      /// Default constructor
      /// </summary>
      public TitleBarRenderer()
      {
      }

      #endregion Instance

      #region Public section

      /// <summary>
      /// Show close button
      /// </summary>
      public bool ShowCloseButton
      {
         get { return _showCloseButton; }
         set { _showCloseButton = value; }
      }

      /// <summary>
      /// Show autohide button
      /// </summary>
      public bool ShowAutohideButton
      {
         get { return _showAutohideButton; }
         set { _showAutohideButton = value; }
      }

      /// <summary>
      /// Show context menu button
      /// </summary>
      public bool ShowContextMenuButton
      {
         get { return _showContextMenuButton; }
         set { _showContextMenuButton = value; }
      }

      /// <summary>
      /// Autohide
      /// </summary>
      public bool Autohide
      {
         get { return _autohide; }
         set { _autohide = value; }
      }

      /// <summary>
      /// Offset for the content
      /// </summary>
      public int ContentTopOffset
      {
         get { return _contentTopOffset; }
         set { _contentTopOffset = value; }
      }

      /// <summary>
      /// zero based index of title bar button under mouse
      /// </summary>
      public int TitleBarButtonIndexUnderMouse
      {
         get { return _titleBarButtonIndexUnderMouse; }
         private set { _titleBarButtonIndexUnderMouse = value; }
      }

      /// <summary>
      /// Accessor of title bar button bounds
      /// </summary>
      public Rectangle TitleBarBounds
      {
         get { return _titleBarBounds; }
         set { _titleBarBounds = value; }
      }

      /// <summary>
      /// Icon
      /// </summary>
      public Icon Icon
      {
         get { return _icon; }
         set { _icon = value; }
      }

      /// <summary>
      /// Text
      /// </summary>
      public string Text
      {
         get { return _text; }
         set { _text = value; }
      }

      /// <summary>
      /// Accessor of the color 1
      /// </summary>
      public Color Color1
      {
         get { return _color1; }
         set { _color1 = value; }
      }

      /// <summary>
      /// Accessor of the color 2
      /// </summary>
      public Color Color2
      {
         get { return _color2; }
         set { _color2 = value; }
      }

      /// <summary>
      /// Accessor of the color 1
      /// </summary>
      public Color SelectedColor1
      {
         get { return _selectedColor1; }
         set { _selectedColor1 = value; }
      }

      /// <summary>
      /// Accessor of the color 2
      /// </summary>
      public Color SelectedColor2
      {
         get { return _selectedColor2; }
         set { _selectedColor2 = value; }
      }

      /// <summary>
      /// Text color
      /// </summary>
      public Color TextColor
      {
         get { return _textColor; }
         set { _textColor = value; }
      }

      /// <summary>
      /// Gets the caption buttons count
      /// </summary>
      /// <returns>bounds of the caption buttons</returns>
      public void UpdateTitleBarButtonIndexUnderMouse(Point mouseLocation)
      {
         Rectangle bounds = GetCaptionButtonsBounds();

         if (bounds.Contains(mouseLocation) == false)
         {
            TitleBarButtonIndexUnderMouse = -1;
         }
         else 
         {
            int index = (mouseLocation.X - bounds.Left) / 16;
            if (index < 0 || index >= ButtonsCount)
            {
               index = -1;
            }
            TitleBarButtonIndexUnderMouse = index;
         }
      }

      /// <summary>
      /// Draw the title bar
      /// </summary>
      /// <param name="font">font used to draw the text</param>
      /// <param name="graphics">graphics</param>
      /// <param name="color1">first gradient color</param>
      /// <param name="color2">second gradient color</param>
      public void Draw(Font font, Graphics graphics, Color color1, Color color2)
      {
         Rectangle titleBounds = TitleBarBounds;
         Rectangle captionButtonsBounds = GetCaptionButtonsBounds();

         using (LinearGradientBrush backBrush = new LinearGradientBrush(titleBounds, color1, color2, LinearGradientMode.Vertical))
         {
            graphics.FillRectangle(backBrush, titleBounds);
         }

         GraphicsState state  = graphics.Save();
         Rectangle clipBounds = new Rectangle(titleBounds.Left, titleBounds.Top, captionButtonsBounds.Left - titleBounds.Left, titleBounds.Height);
         graphics.SetClip(clipBounds);

         int iconSize = Math.Max(0, Math.Min(18, titleBounds.Height - 3));
         int iconTop  = _contentTopOffset + (titleBounds.Height - iconSize) / 2 - 1;
         Rectangle iconBounds = new Rectangle(titleBounds.Left + 4, iconTop, iconSize, iconSize);

         if (Icon != null)
         {
            graphics.DrawIcon (Icon, iconBounds);
         }

         using (Brush textBrush = new SolidBrush(TextColor))
         {
            graphics.DrawString(Text, font, textBrush, iconBounds.Right, iconTop + 2);
         }

         graphics.Restore(state);

         DrawCaptionButtons(captionButtonsBounds, graphics);
      }
      
      /// <summary>
      /// Draw the auto-hide button for dockable tool window
      /// </summary>
      /// <param name="bounds">bounds of the button</param>
      /// <param name="autoHide">true if auto-hide mode is set, false otherwise</param>
      /// <param name="g">draw context</param>
      public static void DrawAutoHideButton (Rectangle bounds, bool autoHide, Graphics g)
      {
         if (autoHide)
         {
            int left = bounds.Left;
            int top  = bounds.Top;

            g.DrawLine (Pens.Navy, left +  4, top + 9, left +  4, top + 3);
            g.DrawLine (Pens.Navy, left +  1, top + 6, left +  4, top + 6);
            g.DrawLine (Pens.Navy, left + 10, top + 8, left + 10, top + 4);
            g.DrawLine (Pens.Navy, left +  4, top + 4, left + 10, top + 4);
            g.DrawLine (Pens.Navy, left +  4, top + 8, left + 10, top + 8);
            g.DrawLine (Pens.Navy, left +  4, top + 7, left + 10, top + 7);
         }
         else
         {
            int left = bounds.Left + 1;
            int top  = bounds.Top;

            g.DrawLine (Pens.Navy, left + 3, top + 8, left + 9, top + 8);
            g.DrawLine (Pens.Navy, left + 6, top + 8, left + 6, top + 11);
            g.DrawLine (Pens.Navy, left + 4, top + 2, left + 8, top + 2);
            g.DrawLine (Pens.Navy, left + 4, top + 2, left + 4, top + 8);
            g.DrawLine (Pens.Navy, left + 8, top + 2, left + 8, top + 8);
            g.DrawLine (Pens.Navy, left + 7, top + 2, left + 7, top + 8);
         }
   }

      #endregion Public section

      #region Private section

      /// <summary>
      /// Accessor of the buttons count
      /// </summary>
      private int ButtonsCount
      {
         get
         {
            int count = 0;
            if (ShowAutohideButton)
            {
               count++;
            }

            if (ShowCloseButton)
            {
               count++;
            }

            if (ShowContextMenuButton)
            {
               count++;
            }

            return count;
         }
      }

      /// <summary>
      /// Draw caption buttons
      /// </summary>
      /// <param name="captionButtonsBounds">caption buttons bounds</param>
      /// <param name="graphics">graphics object</param>
      private void DrawCaptionButtons(Rectangle captionButtonsBounds, Graphics graphics)
      {
         int edge    = 16;

         int width   = 10;
         int height  = 10;
         int x       = captionButtonsBounds.X + (edge - width) / 2;
         int y       = captionButtonsBounds.Y + (edge - height) / 2 - 2;

         int dx      = 0;
         int dy      = 0;

         if (captionButtonsBounds.Width > captionButtonsBounds.Height)
         {
            dx = edge;
         }
         else
         {
            dy = edge;
         }

         int index = 0;

         if (ShowContextMenuButton)
         {
            Rectangle bounds = new Rectangle(x, y, width, height);

            int x1 = bounds.Left + bounds.Width / 2;
            int y1 = bounds.Bottom - 1;

            int y2 = y1 - 4;
            int x2 = x1 - 4;

            int y3 = y2;
            int x3 = x1 + 4;

            if (index == TitleBarButtonIndexUnderMouse)
            {
               Rectangle backBounds = bounds;
               backBounds.Width     = 14;
               backBounds.Height    = 13;
               backBounds.X         = bounds.X - 2;
               backBounds.Y         = bounds.Y - 2;

               DrawSelectedCaptionButtonBackground(true, backBounds, graphics);
            }
            index++;


            using (GraphicsPath arrowHeadPath = new GraphicsPath())
            {
               arrowHeadPath.AddLine(x1, y1, x2, y2);
               arrowHeadPath.AddLine(x2, y2, x3, y3);
               arrowHeadPath.CloseFigure();

               graphics.FillPath(Brushes.Navy, arrowHeadPath);
            }

            x += dx;
            x += dy;
         }

         if (ShowAutohideButton)
         {
            Rectangle bounds = new Rectangle(x - 2, y - 2, width, height);

            if (index == TitleBarButtonIndexUnderMouse)
            {
               Rectangle backBounds = bounds;
               backBounds.Width     = 14;
               backBounds.Height    = 13;
               backBounds.X         = bounds.X;
               backBounds.Y         = bounds.Y;

               DrawSelectedCaptionButtonBackground(true, backBounds, graphics);
            }
            index++;

            DrawAutoHideButton(bounds, Autohide, graphics);

            x += dx;
            x += dy;
         }

         if (ShowCloseButton)
         {
            Rectangle bounds = new Rectangle(x, y + 1, 8, 7);

            if (index == TitleBarButtonIndexUnderMouse)
            {
               Rectangle backBounds = bounds;
               backBounds.Width     = 14;
               backBounds.Height    = 13;
               backBounds.X         = bounds.X - 3;
               backBounds.Y         = bounds.Y - 3;

               DrawSelectedCaptionButtonBackground(true, backBounds, graphics);
            }
            index++;

            graphics.DrawLine(Pens.Navy, bounds.Left,       bounds.Top, bounds.Right - 1, bounds.Bottom);
            graphics.DrawLine(Pens.Navy, bounds.Left + 1,   bounds.Top, bounds.Right,     bounds.Bottom);

            graphics.DrawLine(Pens.Navy, bounds.Right - 1,  bounds.Top, bounds.Left,      bounds.Bottom);
            graphics.DrawLine(Pens.Navy, bounds.Right,      bounds.Top, bounds.Left + 1,  bounds.Bottom);
         }
      }

      /// <summary>
      /// Gets the caption buttons count
      /// </summary>
      /// <returns>bounds of the caption buttons</returns>
      private Rectangle GetCaptionButtonsBounds()
      {
         Rectangle titleBounds = TitleBarBounds;

         int buttonsWidth = 16 * ButtonsCount;
         return new Rectangle(titleBounds.Right - buttonsWidth - 4, 2, buttonsWidth, titleBounds.Height - 8);
      }

      /// <summary>
      /// Draw selected caption button background
      /// </summary>
      /// <param name="active">flag indicating if the parent form is active</param>
      /// <param name="bounds">bounds</param>
      /// <param name="graphics">graphics</param>
      private static void DrawSelectedCaptionButtonBackground(bool active, Rectangle bounds, Graphics graphics)
      {
         graphics.FillRectangle(Brushes.LemonChiffon, bounds);
         graphics.DrawRectangle(Pens.DarkGray,        bounds);
      }

      #endregion Private section
   }
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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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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