Widow – Blame information for rev 14
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Rev | Author | Line No. | Line |
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13 | office | 1 | using System; |
2 | using System.Drawing; |
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3 | using System.Linq; |
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4 | using System.Windows.Forms; |
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5 | |||
6 | namespace Widow |
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7 | { |
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8 | public partial class DrawOverlayForm : Form |
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9 | { |
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10 | public event EventHandler<WindowDrawnEventArgs> WindowDrawn; |
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11 | #region Public Enums, Properties and Fields |
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12 | |||
13 | public bool IsMouseDown { get; set; } |
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14 | |||
15 | public Point StartLocation { get; set; } |
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16 | |||
17 | public Point StopLocation { get; set; } |
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18 | |||
19 | public SolidBrush DrawBrush { get; } |
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20 | |||
21 | public SolidBrush FormBrush { get; } |
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22 | |||
23 | #endregion |
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24 | |||
25 | #region Private Delegates, Events, Enums, Properties, Indexers and Fields |
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26 | |||
27 | private Point CurrentLocation { get; set; } |
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28 | |||
29 | private volatile Bitmap _bitmap; |
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30 | |||
31 | #endregion |
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32 | |||
33 | #region Constructors, Destructors and Finalizers |
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34 | |||
35 | public DrawOverlayForm() |
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36 | { |
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37 | InitializeComponent(); |
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38 | |||
39 | DrawBrush = new SolidBrush(Color.Green); |
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40 | FormBrush = new SolidBrush(Color.White); |
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41 | } |
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42 | |||
43 | #endregion |
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44 | |||
45 | #region Event Handlers |
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46 | |||
47 | private void DrawOverlayForm_MouseDown(object sender, MouseEventArgs e) |
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48 | { |
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49 | IsMouseDown = true; |
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50 | StartLocation = e.Location; |
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51 | } |
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52 | |||
53 | private void DrawOverlayForm_MouseUp(object sender, MouseEventArgs e) |
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54 | { |
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55 | IsMouseDown = false; |
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56 | StopLocation = e.Location; |
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57 | |||
58 | var left = Math.Min(StartLocation.X, StopLocation.X); |
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59 | var top = Math.Min(StartLocation.Y, StopLocation.Y); |
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60 | var width = Math.Abs(StopLocation.X - StartLocation.X); |
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61 | var height = Math.Abs(StopLocation.Y - StartLocation.Y); |
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62 | |||
63 | WindowDrawn?.Invoke(this, new WindowDrawnEventArgs(left, top, width, height)); |
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64 | |||
65 | Close(); |
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66 | } |
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67 | |||
68 | private void DrawOverlayForm_MouseMove(object sender, MouseEventArgs e) |
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69 | { |
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70 | CurrentLocation = e.Location; |
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71 | |||
72 | if (!IsMouseDown) |
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73 | { |
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74 | return; |
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75 | } |
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76 | |||
77 | var selection = new Rectangle( |
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78 | Math.Min(StartLocation.X, CurrentLocation.X), |
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79 | Math.Min(StartLocation.Y, CurrentLocation.Y), |
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80 | Math.Abs(StartLocation.X - CurrentLocation.X), |
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81 | Math.Abs(StartLocation.Y - CurrentLocation.Y)); |
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82 | |||
83 | _bitmap = new Bitmap(Width, Height); |
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84 | |||
85 | using (var canvas = Graphics.FromImage(_bitmap)) |
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86 | { |
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87 | canvas.Clear(Color.White); |
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88 | canvas.FillRectangle(DrawBrush, selection); |
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89 | } |
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90 | |||
91 | Invalidate(); |
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92 | Update(); |
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93 | } |
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94 | |||
95 | private void DrawOverlayForm_Paint(object sender, PaintEventArgs e) |
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96 | { |
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97 | if (_bitmap == null) |
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98 | { |
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99 | return; |
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100 | } |
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101 | |||
102 | var graphics = e.Graphics; |
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103 | |||
104 | graphics.DrawImage(_bitmap, Location.X, Location.Y, Width, Height); |
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105 | |||
106 | _bitmap?.Dispose(); |
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107 | _bitmap = null; |
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108 | } |
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109 | |||
110 | #endregion |
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111 | } |
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112 | } |