source: trunk/sources/HeuristicLab.ExtLibs/HeuristicLab.Netron/3.0.2672.12446/HeuristicLab.Netron-3.0.2672.12446/NetronVisualization.cs @ 11991

Last change on this file since 11991 was 11991, checked in by jkarder, 5 years ago

#2315: fixed scroll bar bug

File size: 4.6 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2014 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.ComponentModel;
24using System.Drawing;
25using System.Windows.Forms;
26
27using Netron.Diagramming.Core;
28
29namespace HeuristicLab.Netron {
30  [ToolboxItem(true)]
31  public partial class NetronVisualization : DiagramControlBase {
32    private static Size INVALID_SIZE = new Size(-1, -1);
33    private Size oldSize;
34    public NetronVisualization()
35      : base() {
36      InitializeComponent();
37      this.oldSize = INVALID_SIZE;
38
39      SetStyle(ControlStyles.AllPaintingInWmPaint, true);
40      SetStyle(ControlStyles.DoubleBuffer, true);
41      SetStyle(ControlStyles.UserPaint, true);
42      SetStyle(ControlStyles.ResizeRedraw, true);
43
44      AutoScroll = true;
45
46      if (!DesignMode) {
47        this.Controller = new Controller(this);
48        this.Document = new Document();
49        this.Document.Model.Selection = new Selection(this.Controller, this.Document.Model);
50        this.View = new View(this);
51        this.AttachToDocument(Document);
52        this.Controller.View = View;
53
54        View.OnCursorChange += new EventHandler<CursorEventArgs>(mView_OnCursorChange);
55        View.OnBackColorChange += new EventHandler<ColorEventArgs>(View_OnBackColorChange);
56
57        this.SizeChanged += new EventHandler(NetronVisualization_SizeChanged);
58        this.UpdateView();
59      }
60    }
61
62    public Size PageSize {
63      get { return this.View.PageSize; }
64      set {
65        this.View.PageSize = value;
66        this.UpdateView();
67      }
68    }
69
70    private void UpdateView() {
71      //zoom in to show scrollbars - code taken from ControllerBase line 1082
72      SizeF s = this.View.Magnification;
73      float alpha = 1.1F;
74      View.Magnification = new SizeF(
75          s.Width * alpha,
76          s.Height * alpha);
77
78      float w = (float)this.AutoScrollPosition.X /
79          (float)this.AutoScrollMinSize.Width;
80
81      float h = (float)this.AutoScrollPosition.Y /
82          (float)this.AutoScrollMinSize.Height;
83
84      RectangleF pageBounds = this.Controller.Model.CurrentPage.Bounds;
85      pageBounds.Inflate(s);
86      SizeF deltaSize = new SizeF(
87          pageBounds.Width - this.ClientRectangle.Width,
88          pageBounds.Height - this.ClientRectangle.Height);
89
90      if ((deltaSize.Width > 0) && (deltaSize.Height > 0)) {
91        this.AutoScrollMinSize = Size.Round(deltaSize);
92      }
93    }
94
95    private void NetronVisualization_SizeChanged(object sender, EventArgs e) {
96      //if (this.oldSize == INVALID_SIZE) {
97      //this.View.PageSize = new Size((int)(this.Size.Width * this.Magnification.Width), (int)(this.Size.Height * this.Magnification.Height));
98      //  if (!this.DesignMode)
99      //    oldSize = this.Size;
100      //  return;
101      //}
102
103      //SizeF magnificationChanges = new SizeF();
104      //magnificationChanges.Width = ((float)this.Size.Width) / oldSize.Width;
105      //magnificationChanges.Height = ((float)this.Size.Height) / oldSize.Height;
106
107      //SizeF newMagnification = new SizeF();
108      //newMagnification.Width = this.View.Magnification.Width * magnificationChanges.Width;
109      //newMagnification.Height = this.View.Magnification.Height * magnificationChanges.Height;
110
111      //this.Magnification = newMagnification;
112      //this.oldSize = this.Size;
113    }
114
115
116    protected override void OnMouseWheel(MouseEventArgs e) {
117      //inserted to disable scrolling by the mousewheel
118      //base.OnMouseWheel(e);
119    }
120
121    protected override void OnScroll(ScrollEventArgs se) {
122      //base.OnScroll(se);
123      if (se.ScrollOrientation == ScrollOrientation.HorizontalScroll) {
124        Origin = new Point(se.NewValue, Origin.Y);
125      } else {
126        Origin = new Point(Origin.X, se.NewValue);
127      }
128    }
129
130    private void mView_OnCursorChange(object sender, CursorEventArgs e) {
131      this.Cursor = e.Cursor;
132    }
133  }
134}
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