UI
1using System; 2using System.Drawing; 3using System.IO; 4using System.Reflection; 5using System.Windows.Forms; 6 7namespace Gof.Test.Memento 8{ 9 /**//// <summary> 10 /// User interface utilities. 11 /// </summary> 12 public class UI 13 { 14 protected Font _font = new Font("Book Antiqua", 18F); 15 public static readonly int STANDARD_PAD = 10; 16 public static readonly UI NORMAL = new UI(); 17 /**//// <summary> 18 /// Set up a standard font that subclasses can override. 19 /// </summary> 20 public virtual Font Font 21 { 22 get 23 { 24 return _font; 25 } 26 } 27 /**//// <summary> 28 /// Set up a standard pad amount that subclasses can override. 29 /// </summary> 30 public virtual int Pad 31 { 32 get 33 { 34 return STANDARD_PAD; 35 } 36 } 37 /**//// <summary> 38 /// Create a standard Ok! (or affirmation) button. 39 /// </summary> 40 /// <returns>a standard Ok! (or affirmation) button</returns> 41 public virtual Button CreateButtonOk() 42 { 43 Button b = CreateButton(); 44 b.Image = GetImage("rocket-large.gif"); 45 b.Text = "Ok!"; 46 return b; 47 } 48 /**//// <summary> 49 /// Create a standard Cancel! (or negation) button. 50 /// </summary> 51 /// <returns>a standard Cancel! (or negation) button</returns> 52 public virtual Button CreateButtonCancel() 53 { 54 Button b = CreateButton(); 55 b.Image = GetImage("rocket-large-down.gif"); 56 b.Text = "Cancel!"; 57 return b; 58 } 59 60 /**//// <summary> 61 /// Create a standard button. 62 /// </summary> 63 /// <returns>a standard button</returns> 64 public virtual Button CreateButton() 65 { 66 Button b = new Button(); 67 b.Size = new Size(128, 128); 68 b.ImageAlign = ContentAlignment.TopCenter; 69 b.Font = Font; 70 b.TextAlign = ContentAlignment.BottomCenter; 71 return b; 72 } 73 /**//// <summary> 74 /// Create a panel that adds a standard amount of padding around 75 /// any controls that are added to it. 76 /// </summary> 77 /// <returns>the panel</returns> 78 public virtual Panel CreatePaddedPanel() 79 { 80 Panel p = new Panel(); 81 p.Dock = DockStyle.Fill; 82 p.DockPadding.All = Pad; 83 return p; 84 } 85 /**//// <summary> 86 /// Create a panel that adds a standard amount of padding around 87 /// a given control. 88 /// </summary> 89 /// <param name="c">the control</param> 90 /// <returns>the panel</returns> 91 public virtual Panel CreatePaddedPanel(Control c) 92 { 93 Panel p = CreatePaddedPanel(); 94 p.Controls.Add(c); 95 return p; 96 } 97 /**//// <summary> 98 /// Create a group box that wraps a titled border around a 99 /// given component.100 /// </summary>101 /// <param name="title">The words to show in the title border tab</param>102 /// <param name="control">The control that the border goes around</param>103 /// <returns>A group box panel with a title, wrapped around the 104 /// supplied control</returns>105 public virtual GroupBox CreateGroupBox(106 String title, Control control)107 {108 GroupBox gb = new GroupBox();109 gb.Text = title;110 gb.Dock = DockStyle.Fill;111 gb.Controls.Add(control);112 return gb;113 } 114 /**//// <summary>115 /// Create a standard grid for displaying, in particular,116 /// database tables.117 /// </summary>118 /// <returns>A standard data grid</returns>119 public virtual DataGrid CreateGrid()120 { 121 DataGrid g = new DataGrid();122 g.Dock = DockStyle.Fill;123 g.CaptionVisible = false;124 return g;125 }126 /**//// <summary>127 /// Create a standard list, where each list item has an accompanying128 /// image/icon.129 /// </summary>130 /// <param name="size">the size for images</param>131 /// <param name="images">the images</param>132 /// <returns>a standard list view</returns>133 public virtual ListView CreateListView(Size size, params Image[] images)134 {135 ListView lv = new ListView();136 lv.Font = Font;137 lv.View = View.Details;138 lv.Columns.Add(new ColumnHeader());139 lv.Columns[0].Width = -2; // autosize140 lv.HeaderStyle = ColumnHeaderStyle.None;141 lv.SmallImageList = CreateImageList(size, images);142 return lv;143 }144 // Create an ImageList object given the images and the desired145 // size for them.146 protected virtual ImageList CreateImageList (Size size, params Image[] images) 147 { 148 ImageList il = new ImageList();149 il.ColorDepth = ColorDepth.Depth32Bit;150 il.ImageSize = size;151 foreach (Image i in images) 152 {153 il.Images.Add(i);154 }155 return il; 156 } 157 /**//// <summary>158 /// This method looks up an image file and returns the image159 /// contained therein. This method expects all images to be160 /// in a path relative to the directory that this assembly161 /// is in, namely ..\images.162 /// </summary>163 /// <param name="imageName">the image to look up</param>164 /// <returns>the image</returns>165 public static Image GetImage(String imageName) 166 {167 return Image.FromFile(Gof.Test.Proxy.DataService.GetFileName("images", imageName));168 }169 }170}
FactoryDelegate
1using System;2using System.Drawing;34namespace Gof.Test.Memento5{6 public delegate void AddHandler(Point p);7 public delegate void RebuildHandler();8 public delegate void DragHandler(Point oldP,Point newP);9}
FacotryModel
1using System; 2using System.Collections; 3using System.Drawing; 4 5namespace Gof.Test.Memento 6{ 7 public class FactoryModel 8 { 9 private Stack _mementos; 10 public event AddHandler AddEvent; 11 public event DragHandler DragEvent; 12 public event RebuildHandler RebuildEvent; 13 public static readonly Point DEFAULT_LOCATION = new Point(10,10); 14 public FactoryModel() 15 { 16 _mementos = new Stack(); 17 _mementos.Push(new ArrayList()); 18 } 19 public void AddMachine() 20 { 21 IList newLocs = new ArrayList(); 22 Point newP = DEFAULT_LOCATION; 23 newLocs.Add(newP); 24 foreach(Point p in (IList)_mementos.Peek()) 25 { 26 newLocs.Add(new Point(p.X,p.Y)); 27 } 28 _mementos.Push(newLocs); 29 30 if(AddEvent != null) 31 { 32 AddEvent(newP); 33 } 34 } 35 public IList Locations 36 { 37 get 38 { 39 return (IList)_mementos.Peek(); 40 } 41 } 42 public void Pop() 43 { 44 if(_mementos.Count > 1) 45 { 46 _mementos.Pop(); 47 } 48 if(RebuildEvent != null) 49 { 50 RebuildEvent(); 51 } 52 } 53 /**//// <summary> 54 /// Move a machine from an old location to a new one. A side 55 /// effect is that the new location will be the first in this 56 /// model's list of locations. This helps the GUI handle Z order. 57 /// In particular, just clicking a machine will move it the the 58 /// head of the list and will thus bring it to the "front" of 59 /// the display. 60 /// </summary> 61 /// <param name="oldP">where the machine was</param> 62 /// <param name="newP">the new spot for the machine</param> 63 public void Drag(Point oldP, Point newP) 64 { 65 // put the new location up front so its Z order is on top 66 IList newLocs = new ArrayList(); 67 newLocs.Add(newP); 68 // create a new list, copying in all except the dragee 69 bool foundDragee = false; 70 foreach (Point p in (IList)_mementos.Peek()) 71 { 72 if ( !foundDragee && p.Equals(oldP)) 73 { 74 foundDragee = true; 75 } 76 else 77 { 78 newLocs.Add(new Point(p.X, p.Y)); 79 } 80 } 81 _mementos.Push(newLocs); 82 if (DragEvent != null) DragEvent(oldP, newP); 83 } 84 /**//// <summary> 85 /// Add a new configuration. 86 /// </summary> 87 /// <param name="list">A list of Point objects representing machine locations</param> 88 public void Push(IList list) 89 { 90 _mementos.Push(list); 91 if (RebuildEvent != null) RebuildEvent(); 92 } 93 /**//// <summary> 94 /// Return the number of saved configurations. This helps the GUI 95 /// decide whether to offer "undo". 96 /// </summary> 97 public int MementoCount 98 { 99 get 100 {101 return _mementos.Count;102 }103 }104 }105}
VisMediator
1using System; 2using System.Collections; 3using System.Drawing; 4using System.IO; 5using System.Runtime.Serialization.Formatters.Soap; 6using System.Windows.Forms; 7 8namespace Gof.Test.Memento 9{ 10 /**//// <summary> 11 /// This class handles the UI events for the Visualization class 12 /// </summary> 13 public class VisMediator 14 { 15 protected int initX; 16 protected int initY; 17 protected Point initLocation; 18 protected bool isMouseDown = false; 19 20 protected FactoryModel _factoryModel; 21 22 /**//// <summary> 23 /// Create a new mediator for a visualization that uses the provided 24 /// factory model. 25 /// </summary> 26 /// <param name="m">The model that tracks equipment locations</param> 27 public VisMediator(FactoryModel m) 28 { 29 _factoryModel = m; 30 } 31 32 // The user clicked "Add" 33 internal void Add(object sender, System.EventArgs e) 34 { 35 _factoryModel.AddMachine(); 36 } 37 38 // The user has clicked "Undo" 39 internal void Undo(object sender, System.EventArgs e) 40 { 41 _factoryModel.Pop(); 42 } 43 44 // A click on a picture box 45 internal void MouseDown(object sender, MouseEventArgs e) 46 { 47 if (e.Button == MouseButtons.Left) 48 { 49 PictureBox pb = (PictureBox) sender; 50 initLocation = pb.Location; 51 initX = Control.MousePosition.X; 52 initY = Control.MousePosition.Y; 53 isMouseDown = true; 54 } 55 } 56 57 // A drag while a picture box is clicked 58 internal void MouseMove(object sender, MouseEventArgs e) 59 { 60 if (isMouseDown) 61 { 62 63 PictureBox pb = (PictureBox) sender; 64 pb.Location = new Point(initLocation.X + Control.MousePosition.X - initX, 65 initLocation.Y + Control.MousePosition.Y - initY); 66 } 67 } 68 69 // leggo of a picture box. Let the factory model know about this change 70 internal void MouseUp(object sender, MouseEventArgs e) 71 { 72 if (e.Button == MouseButtons.Left) 73 { 74 isMouseDown = false; 75 PictureBox pb = (PictureBox) sender; 76 _factoryModel.Drag(initLocation, pb.Location); 77 } 78 } 79 80 // User clicked "Save As" menu item 81 internal void Save(object sender, System.EventArgs e) 82 { 83 SaveFileDialog d = new SaveFileDialog(); 84 if (d.ShowDialog() == DialogResult.OK) 85 { 86 using (FileStream fs = File.Create(d.FileName)) 87 { 88 new SoapFormatter().Serialize(fs, _factoryModel.Locations); 89 } 90 } 91 } 92 93 // User clicked "Restore from" menu item 94 internal void Restore(object sender, System.EventArgs e) 95 { 96 OpenFileDialog d = new OpenFileDialog(); 97 if (d.ShowDialog() == DialogResult.OK) 98 { 99 using (FileStream fs = File.Open(d.FileName, FileMode.Open))100 {101 IList list = (IList)(new SoapFormatter().Deserialize(fs)); 102 _factoryModel.Push(list); 103 } 104 }105 }106 }107}
Visualization
1using System; 2using System.Drawing; 3using System.Windows.Forms; 4 5namespace Gof.Test.Memento 6{ 7 /**//// <summary> 8 /// This class provides a visualization of a factory that contains 9 /// machines and through which material flows. At present the only 10 /// functionality is the ability to create and drag machines. In the 11 /// future we'll add operational modeling functions. 12 /// </summary> 13 public class Visualization : Form 14 { 15 protected UI _ui; 16 protected Panel _machinePanel; 17 protected Panel _buttonPanel; 18 protected Button _addButton; 19 protected Button _undoButton; 20 protected Image _image = UI.GetImage("machine.png"); 21 protected FactoryModel _factoryModel = new FactoryModel(); 22 protected VisMediator _mediator; 23 24 /**//// <summary> 25 /// Create a new visualization of a simulated factory. 26 /// </summary> 27 public Visualization(UI ui) 28 { 29 _ui = ui; 30 _factoryModel.AddEvent += new AddHandler(HandleAdd); 31 _factoryModel.DragEvent += new DragHandler(HandleDrag); 32 _factoryModel.RebuildEvent += new RebuildHandler(HandleUndo); 33 _mediator = new VisMediator(_factoryModel); 34 Controls.Add(MachinePanel()); 35 Controls.Add(ButtonPanel()); 36 Text = "Operational Model"; 37 } 38 39 // the panel on which we'll drag around machines 40 protected Panel MachinePanel() 41 { 42 if (_machinePanel == null) 43 { 44 _machinePanel = new Panel(); 45 _machinePanel.BackColor = Color.White; 46 _machinePanel.Dock = DockStyle.Fill; 47 } 48 return _machinePanel; 49 } 50 51 // the panel that holds the app's buttons 52 protected Panel ButtonPanel() 53 { 54 if (_buttonPanel == null) 55 { 56 _buttonPanel = new Panel(); 57 _buttonPanel.Controls.Add(AddButton()); 58 _buttonPanel.Controls.Add(UndoButton()); 59 _buttonPanel.Dock = DockStyle.Bottom; 60 _buttonPanel.Height = (int)(AddButton().Height * 1.10); 61 } 62 return _buttonPanel; 63 } 64 65 // the "Add" button 66 protected Button AddButton() 67 { 68 if (_addButton == null) 69 { 70 _addButton = _ui.CreateButtonOk(); 71 _addButton.Dock = DockStyle.Left; 72 _addButton.Text = "Add"; 73 _addButton.Click += new System.EventHandler(_mediator.Add); 74 } 75 return _addButton; 76 } 77 78 // the "Undo" button 79 protected Button UndoButton() 80 { 81 if (_undoButton == null) 82 { 83 _undoButton = _ui.CreateButtonCancel(); 84 _undoButton.Dock = DockStyle.Right; 85 _undoButton.Text = "Undo"; 86 _undoButton.Click += new System.EventHandler(_mediator.Undo); 87 _undoButton.Enabled = false; 88 } 89 return _undoButton; 90 } 91 92 93 // Add a new machine at the given location 94 protected void HandleAdd(Point p) 95 { 96 PictureBox pb = CreatePictureBox(p); 97 MachinePanel().Controls.Add(pb); 98 pb.BringToFront(); 99 UndoButton().Enabled = true;100 }101102 // Dragging a machine brings it to the front of the controls103 // in the machine panel, and updates the machine's location 104 protected void HandleDrag(Point oldP, Point newP)105 { 106 foreach (PictureBox pb in MachinePanel().Controls)107 {108 if (pb.Location.Equals(newP)) 109 {110 pb.BringToFront();111 return;112 } 113 }114 }115116 // When the user clicks Undo, we rebuild the factory117 // from the model.118 protected void HandleUndo()119 { 120 MachinePanel().Controls.Clear(); 121 foreach (Point p in _factoryModel.Locations)122 { 123 MachinePanel().Controls.Add(CreatePictureBox(p));124 } 125 UndoButton().Enabled = _factoryModel.MementoCount > 1;126 }127128 // Create a standard picture of a machine129 protected PictureBox CreatePictureBox(Point p)130 { 131 PictureBox pb = new PictureBox();132 pb.Image = _image;133 pb.Size = _image.Size; 134 pb.MouseDown += new MouseEventHandler(_mediator.MouseDown); 135 pb.MouseMove += new MouseEventHandler(_mediator.MouseMove);136 pb.MouseUp += new MouseEventHandler(_mediator.MouseUp);137 pb.Location = p; 138 return pb;139 }140 }141}
客户代码
1 System.Windows.Forms.Application.Run(new Gof.Test.Memento.Visualization(Gof.Test.Memento.UI.NORMAL));
转载于:https://www.cnblogs.com/nanshouyong326/archive/2007/01/10/616516.html
相关资源：数据结构—成绩单生成器
