1 | ' Classes/System/Windows/Forms/Control.ab
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2 |
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3 | #ifndef __SYSTEM_WINDOWS_FORMS_CONTROL_AB__
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4 | #define __SYSTEM_WINDOWS_FORMS_CONTROL_AB__
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5 |
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6 | #require <windows/WindowHandle.sbp>
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7 | #require <Classes/System/Windows/Forms/misc.ab>
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8 | #require <Classes/System/Windows/Forms/CreateParams.ab>
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9 | #require <Classes/System/Windows/Forms/Message.ab>
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10 | #require <Classes/System/Windows/Forms/PaintEventArgs.ab>
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11 | #require <Classes/System/misc.ab>
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12 | #require <Classes/System/Math.ab>
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13 | #require <Classes/System/Threading/WaitHandle.ab>
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14 | #require <Classes/System/Drawing/Color.ab>
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15 | #require <Classes/System/Drawing/Point.ab>
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16 | #require <Classes/System/Drawing/Size.ab>
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17 | #require <Classes/System/Drawing/Rectangle.ab>
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18 | #require <Classes/System/Runtime/InteropServices/GCHandle.ab>
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19 |
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20 | TypeDef InvokeProc = *Function(p As VoidPtr) As VoidPtr
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21 |
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22 | Class AsyncResultForInvoke
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23 | Inherits IAsyncResult
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24 | Public
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25 | ' Properties
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26 | Sub AsyncResultForInvoke(h As HANDLE)
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27 | waitHandle.Handle = h
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28 | End Sub
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29 |
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30 | Override Function AsyncState() As IObject
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31 | Return Nothing
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32 | End Function
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33 |
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34 | Override Function AsyncWaitHandle() As WaitHandle
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35 | Return waitHandle
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36 | End Function
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37 |
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38 | Override Function CompletedSynchronously() As BOOL
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39 | Return FALSE
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40 | End Function
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41 |
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42 | Override Function IsCompleted() As BOOL
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43 | Return waitHandle.WaitOne(0, FALSE)
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44 | End Function
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45 |
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46 | Const Function Result() As VoidPtr
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47 | Return result
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48 | End Function
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49 |
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50 | Sub Result(r As VoidPtr)
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51 | result = r
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52 | End Sub
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53 |
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54 | Private
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55 | waitHandle As WaitHandle
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56 | result As VoidPtr
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57 | End Class
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58 |
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59 | Class AsyncInvokeData
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60 | Public
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61 | FuncPtr As InvokeProc
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62 | Data As *VoidPtr
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63 | AsyncResult As AsyncResultForInvoke
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64 | End Class
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65 |
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66 | Class Control
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67 | ' Inherits IWin32Window
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68 | Public
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69 | '---------------------------------------------------------------------------
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70 | ' Public Properties
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71 |
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72 | Function AllowDrop() As Boolean
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73 | End Function
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74 |
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75 | /*Override*/ Function Handle() As HWND
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76 | Return wnd.HWnd
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77 | End Function
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78 |
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79 | ' IDropTargetを実装するのでDragAcceptFiles関数は呼ばない。
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80 | Sub AllowDrop(a As Boolean)
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81 | End Sub
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82 |
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83 | Const Function Visible() As Boolean
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84 | Return wnd.Visible
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85 | End Function
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86 |
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87 | Sub Visible(v As Boolean)
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88 | wnd.Visible(v)
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89 | End Sub
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90 |
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91 | Const Function Text() As String
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92 | Return text
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93 | End Function
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94 |
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95 | Sub Text(ByRef t As String)
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96 | text = t
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97 | Dim e As EventArgs
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98 | OnTextChanged(e)
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99 | End Sub
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100 |
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101 | Const Function Enabled() As Boolean
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102 | Return wnd.Enabled
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103 | End Function
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104 |
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105 | Sub Enabled(e As Boolean)
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106 | ' OnEnabledChangedはWM_ENABLE経由で呼ばれる
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107 | wnd.Enabled(e)
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108 | End Sub
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109 |
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110 | Const Function Bounds() As Rectangle
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111 | Dim wr As RECT
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112 | wr = wnd.WindowRect
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113 | Dim r = New Rectangle(wr)
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114 | Dim parent = Parent
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115 | If Object.ReferenceEquals(parent, Nothing) Then
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116 | Return parent->RectangleToClient(r)
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117 | Else
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118 | Return r
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119 | End If
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120 | End Function
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121 |
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122 | Sub Bounds(r As Rectangle)
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123 | SetBoundsCore(r.X, r.Y, r.Width, r.Height, BoundsSpecified.All)
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124 | End Sub
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125 |
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126 | Const Function Location() As Point
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127 | Return Bounds.Location
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128 | End Function
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129 |
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130 | Sub Location(p As Point)
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131 | SetBoundsCore(p.X, p.Y, 0, 0, BoundsSpecified.Location)
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132 | End Sub
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133 |
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134 | Const Function Size() As Size
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135 | Return Bounds.Size
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136 | End Function
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137 |
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138 | Sub Size(s As Size)
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139 | SetBoundsCore(0, 0, s.Width, s.Height, BoundsSpecified.Size)
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140 | End Sub
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141 |
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142 | Const Function ClientRectangle() As Rectangle
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143 | Return New Rectangle(wnd.ClientRect)
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144 | End Function
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145 |
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146 | Const Function ClientSize() As Size
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147 | Return ClientRectangle.Size
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148 | End Function
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149 |
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150 | Const Function Left() As Long
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151 | Dim b = Bounds
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152 | Return b.Left
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153 | End Function
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154 |
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155 | Sub Left(l As Long)
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156 | SetBoundsCore(l, 0, 0, 0, BoundsSpecified.X)
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157 | End Sub
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158 |
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159 | Const Function Top() As Long
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160 | Dim b = Bounds
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161 | Return b.Top
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162 | End Function
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163 |
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164 | Sub Top(t As Long)
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165 | SetBoundsCore(0, t, 0, 0, BoundsSpecified.Y)
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166 | End Sub
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167 |
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168 | Const Function Width() As Long
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169 | Dim b = Bounds
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170 | Return b.Width
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171 | End Function
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172 |
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173 | Sub Width(w As Long)
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174 | SetBoundsCore(0, 0, w, 0, BoundsSpecified.Width)
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175 | End Sub
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176 |
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177 | Const Function Height() As Long
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178 | Dim b = Bounds
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179 | Return b.Height
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180 | End Function
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181 |
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182 | Sub Height(h As Long)
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183 | SetBoundsCore(0, 0, 0, h, BoundsSpecified.Height)
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184 | End Sub
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185 |
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186 | Const Function Right() As Long
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187 | Return Left + Width
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188 | End Function
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189 |
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190 | Const Function Bottom() As Long
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191 | Return Top + Height
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192 | End Function
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193 |
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194 | Const Function PointToScreen(p As Point) As Point
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195 | PointToScreen = New Point
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196 | ret.X = p.X
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197 | ret.Y = p.Y
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198 | wnd.ClientToScreen(ByVal VarPtr(PointToScreen) As *POINTAPI)
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199 | End Function
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200 |
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201 | Const Function PointToClient(p As Point) As Point
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202 | PointToScreen = New Point
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203 | ret.X = p.X
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204 | ret.Y = p.Y
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205 | wnd.ScreenToClient(ByVal VarPtr(PointToScreen) As *POINTAPI)
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206 | End Function
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207 |
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208 | Const Function RectangleToScreen(r As Rectangle) As Rectangle
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209 | Dim rc = r.ToRECT
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210 | wnd.ClientToScreen(rc)
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211 | Return New Rectangle(rc)
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212 | End Function
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213 |
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214 | Const Function RectangleToClient(r As Rectangle) As Rectangle
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215 | Dim rc As RECT
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216 | rc = r.ToRECT()
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217 | wnd.ScreenToClient(rc)
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218 | Return New Rectangle(rc)
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219 | End Function
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220 |
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221 | Const Function InvokeRequired() As Boolean
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222 | Return wnd.ThreadID <> GetCurrentThreadId()
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223 | End Function
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224 |
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225 | Const Virtual Function BackColor() As Color
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226 | Return bkColor
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227 | End Function
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228 |
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229 | Virtual Sub BackColor(c As Color)
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230 | c = bkColor
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231 | Dim e As EventArgs
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232 | OnBackColorChanged(e)
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233 | End Sub
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234 |
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235 | Function Parent() As Control
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236 | Return parent
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237 | End Function
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238 |
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239 | Const Function IsHandleCreated() As Boolean
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240 | Return wnd.HWnd <> 0
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241 | End Function
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242 |
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243 | Static Function DefaultBackColor() As Color
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244 | Return Color.FromArgb(255, 255, 255)
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245 | End Function
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246 |
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247 | '---------------------------------------------------------------------------
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248 | ' Constractors
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249 |
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250 | Sub Control()
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251 | Dim sz = DefaultSize()
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252 | Control("", 100, 100, sz.Width, sz.Height)
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253 | End Sub
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254 |
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255 | Sub Control(text As String)
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256 | Dim sz = DefaultSize()
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257 | Control(text, 100, 100, sz.Width, sz.Height)
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258 | End Sub
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259 |
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260 | Sub Control(parent As Control, text As String)
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261 | Dim sz = DefaultSize()
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262 | Control(parent, text, 100, 100, sz.Width, sz.Height)
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263 | End Sub
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264 |
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265 | Sub Control(text As String, left As Long, top As Long, width As Long, height As Long)
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266 | This.text = text
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267 | bkColor = DefaultBackColor
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268 | ' Debug
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269 | CreateHandle()
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270 | End Sub
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271 |
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272 | Sub Control(parent As Control, text As String, left As Long, top As Long, width As Long, height As Long)
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273 | This.parent = VarPtr(parent)
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274 | Control(text, left, top, width, height)
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275 | End Sub
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276 |
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277 | '---------------------------------------------------------------------------
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278 | ' Destractor
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279 |
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280 | Virtual Sub ~Control()
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281 | If wnd.IsWindow Then
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282 | wnd.Destroy() ' 暫定
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283 | End If
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284 | End Sub
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285 |
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286 | '---------------------------------------------------------------------------
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287 | ' Public Methods
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288 |
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289 | ' 同期関数呼出、Controlが作成されたスレッドで関数を実行する。
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290 | ' 関数は同期的に呼び出されるので、関数が終わるまでInvokeは制御を戻さない。
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291 | Function Invoke(pfn As InvokeProc, p As VoidPtr) As VoidPtr
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292 | Return wnd.SendMessage(WM_CONTROL_INVOKE, p As WPARAM, pfn As LPARAM) As VoidPtr
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293 | End Function
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294 |
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295 | ' 非同期関数呼出、Controlが作成されたスレッドで関数を実行する。
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296 | ' 関数は非同期的に呼び出されるので、BeginInvokeはすぐに制御を戻す。
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297 | ' 後にEndInvokeを呼び出すことにより、関数の戻り値を受け取れる。
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298 | Function BeginInvoke(pfn As InvokeProc, p As VoidPtr) As IAsyncResult
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299 | ' EndInvokeがDeleteする
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300 | Dim asyncResult = New AsyncResultForInvoke(CreateEvent(0, FALSE, FALSE, 0))
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301 | ' OnControlBeginInvokeがDeleteする
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302 | Dim asyncInvokeData = New AsyncInvokeData
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303 | With asyncInvokeData
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304 | .FuncPtr = pfn
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305 | .Data = p
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306 | .AsyncResult = asyncResult
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307 | End With
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308 | Dim gch = GCHandle.Alloc(asyncInvokeData)
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309 | wnd.PostMessage(WM_CONTROL_BEGININVOKE, 0, GCHandle.ToIntPtr(gch))
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310 | Return pAsyncResult
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311 | End Function
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312 |
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313 | ' BeginInvokeで呼び出した関数の戻り値を受け取る。
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314 | ' その関数がまだ終了していない場合、終了するまで待機する。
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315 | Function EndInvoke(ar As IAsyncResult) As VoidPtr
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316 | ar.WaitHandle.WaitOne()
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317 | Dim arInvoke = ar As AsyncResultForInvoke
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318 | Return arInvoke.Result
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319 | End Function
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320 |
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321 | ' 与えられたウィンドウハンドルがControl(若しくはその派生クラス)の
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322 | ' インスタンスに対応するものであった場合、
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323 | ' 元のインスタンスを返す。
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324 | ' そうでなければNothingを返す。
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325 | Static Function FromHandle(hwnd As HWND) As Control
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326 | If IsWindow(hwnd) Then
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327 | If GetClassLongPtr(hwnd, GCW_ATOM) = atom Then
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328 | Dim gch = GCHandle.FromIntPtr(GetWindowLongPtr(hwnd, GWLP_THIS))
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329 | Return gch.Target As Control
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330 | End If
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331 | End If
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332 | Return Nothing As Control
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333 | End Function
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334 |
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335 | Virtual Sub ResetText()
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336 | text = ""
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337 | End Sub
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338 |
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339 | Override Function ToString() As String
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340 | Return text
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341 | End Function
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342 |
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343 | ' Wrapper Methods
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344 | Sub BringToFront()
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345 | wnd.BringToTop()
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346 | End Sub
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347 |
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348 | Sub Hide()
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349 | wnd.Show(SW_HIDE)
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350 | End Sub
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351 |
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352 | Sub Show()
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353 | wnd.Show(SW_SHOW)
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354 | End Sub
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355 |
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356 | Sub Update()
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357 | wnd.Update()
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358 | End Sub
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359 |
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360 | Protected
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361 | '---------------------------------------------------------------------------
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362 | ' Protected Properties
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363 | ' Const Virtual Function CanRaiseEvents() As Boolean
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364 | Virtual Function CreateParams() As CreateParams
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365 | Return createParams
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366 | End Function
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367 |
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368 | ' Virtual Function DefaultCursor() As Cursor
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369 |
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370 | Virtual Function DefaultSize() As Size
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371 | Dim s As Size(300, 300)
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372 | Return s
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373 | End Function
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374 |
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375 | ' Function FontHeight() As Long
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376 | ' Sub FontHeight(h As Long)
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377 |
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378 | ' Const Virtual Function Cursor() As Cursor
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379 | ' Virtual Sub Cursor(ByRef c As Cursor)
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380 |
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381 | '---------------------------------------------------------------------------
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382 | ' Protected Methods
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383 | Virtual Sub CreateHandle()
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384 | Dim createParams = CreateParams()
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385 | Dim gch = GCHandle.Alloc(This)
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386 | TlsSetValue(tlsIndex, GCHandle.ToIntPtr(gch) As VoidPtr)
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387 | With createParams[0]
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388 | Dim hwndParent = 0 As HWND
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389 | If Not Object.ReferenceEquals(parent, Nothing) Then
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390 | hwndParent = parent.Handle
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391 | End If
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392 | If CreateWindowEx(.ExStyle, atom As ULONG_PTR As PCSTR, text, .Style, _
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393 | CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, _
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394 | hwndParent, 0, hInstance, 0) = 0 Then
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395 | ' Error
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396 | Dim buf[1023] As TCHAR
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397 | wsprintf(buf, ToTCStr(Ex"Control: CreateWindowEx failed. Error code: &h%08X\r\n"), GetLastError())
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398 | OutputDebugString(buf)
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399 | ' Debug
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400 | ExitThread(0)
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401 | End If
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402 | End With
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403 | gch.Free()
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404 | End Sub
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405 |
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406 | Virtual Sub DefWndProc(m As Message)
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407 | m.Result = DefWindowProc(m.HWnd, m.Msg, m.WParam, m.LParam)
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408 | End Sub
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409 |
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410 | Virtual Sub WndProc(m As Message)
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411 | With m
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412 | Select Case .Msg
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413 | Case WM_GETTEXTLENGTH
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414 | .Result = text.Length
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415 | Case WM_GETTEXT
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416 | Dim size = Math.Min(.WParam As ULONG_PTR, (text.Length + 1) As ULONG_PTR)
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417 | memcpy(.LParam As PCTSTR, ToTCStr(text), size * SizeOf (TCHAR))
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418 | .Result = size
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419 | Case WM_SETTEXT
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420 | text = New String(.LParam As PCTSTR)
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421 | Case WM_ENABLE
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422 | OnEnabledChanged(EventArgs.Empty)
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423 | Case WM_ERASEBKGND
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424 | ' OnPaintBackgroundに移すべき
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425 | Dim hdc = .WParam As HDC
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426 | Dim hbr = CreateSolidBrush(bkColor.ToCOLORREF())
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427 | Dim hbrOld = SelectObject(hdc, hbr)
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428 | Dim rc = wnd.ClientRect
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429 | Rectangle(hdc, rc.left, rc.top, rc.right, rc.bottom)
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430 | SelectObject(hdc, hbrOld)
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431 | DeleteObject(hbr)
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432 | Case WM_CONTROL_INVOKE
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433 | Dim pfn = .LParam As InvokeProc
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434 | .Result = pfn(m.WParam As VoidPtr) As LRESULT
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435 | Case WM_CONTROL_BEGININVOKE
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436 | OnControlBeginInvoke(m)
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437 | Case WM_CREATE
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438 | OnHandleCreated(EventArgs.Empty)
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439 | Case Else
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440 | DefWndProc(m)
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441 | End Select
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442 | End With
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443 | End Sub
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444 |
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445 | Virtual Sub SetClientSizeCore(x As Long, y As Long)
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446 | Dim rc As RECT
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447 | With rc
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448 | .left = 0
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449 | .top = 0
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450 | .right = x
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451 | .bottom = y
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452 | End With
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453 | Dim hasMenu = FALSE As BOOL
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454 | If wnd.Parent As HWND = 0 Then
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455 | If wnd.Menu <> 0 Then
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456 | hasMenu = TRUE
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457 | End If
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458 | End If
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459 | AdjustWindowRectEx(rc, wnd.Style, hasMenu, wnd.ExStyle)
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460 | wnd.Move(rc)
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461 | End Sub
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462 |
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463 | Virtual Sub SetBoundsCore(x As Long, y As Long, width As Long, height As Long, bs As BoundsSpecified)
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464 | ' If Not (bs As DWord And BoundsSpecified.X As DWord) Then
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465 | x = Left
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466 | ' End If
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467 | ' If Not (bs As DWord And BoundsSpecified.Y As DWord) Then
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468 | y = Right
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469 | ' End If
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470 | ' If Not (bs As DWord And BoundsSpecified.Width As DWord) Then
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471 | width = Width
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472 | ' End If
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473 | ' If Not (bs As DWord And BoundsSpecified.Height As DWord) Then
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474 | height = Height
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475 | ' End If
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476 | wnd.Move(x, y, width, height)
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477 | End Sub
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478 |
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479 | Virtual Sub NotifyInvalidate(r As Rectangle)
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480 | Dim rc As RECT
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481 | rc = r.ToRECT()
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482 | wnd.InvalidateRect(rc)
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483 | End Sub
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484 |
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485 | Virtual Sub OnPaintBackground(e As PaintEventArgs) : End Sub
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486 | Virtual Sub OnEnabledChanged(e As EventArgs) : End Sub
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487 | Virtual Sub OnBackColorChanged(e As EventArgs) : End Sub
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488 | Virtual Sub OnHandleCreated(e As EventArgs) : End Sub
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489 | Virtual Sub OnTextChanged(e As EventArgs)
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490 | wnd.SetText(ToTCStr(text))
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491 | End Sub
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492 |
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493 | Private
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494 | ' Member variables
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495 | wnd As WindowHandle
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496 | text As String
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497 | parent As Control
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498 | bkColor As Color
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499 |
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500 | Static createParams As CreateParams
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501 |
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502 | 'ウィンドウ作成時にウィンドウプロシージャへThisを伝えるためのもの
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503 | Static tlsIndex As DWord
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504 |
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505 | Static hInstance As HINSTANCE
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506 | Static atom As ATOM
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507 |
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508 | Static Const WM_CONTROL_INVOKE = WM_USER + 0 As DWord
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509 | Static Const WM_CONTROL_BEGININVOKE = WM_USER + 1 As DWord
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510 |
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511 | Static Const WindowClassName = "ActiveBasic Control"
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512 | Public
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513 | Static Sub Initialize(hinst As HINSTANCE)
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514 | tlsIndex = TlsAlloc()
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515 | hInstance = hinst
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516 |
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517 | Dim wcx As WNDCLASSEX
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518 | With wcx
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519 | .cbSize = Len (wcx)
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520 | .style = CS_HREDRAW Or CS_VREDRAW Or CS_DBLCLKS
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521 | .lpfnWndProc = AddressOf (WndProcFirst)
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522 | .cbClsExtra = 0
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523 | .cbWndExtra = SizeOf (LONG_PTR) * 2
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524 | .hInstance = hinst
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525 | .hIcon = 0
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526 | .hCursor = LoadImage(0, MAKEINTRESOURCE(IDC_ARROW), IMAGE_CURSOR, 0, 0, LR_DEFAULTSIZE Or LR_SHARED) As HCURSOR
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527 | .hbrBackground = 0
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528 | .lpszMenuName = 0
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529 | .lpszClassName = WindowClassName
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530 | .hIconSm = 0
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531 | End With
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532 | atom = RegisterClassEx(wcx)
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533 | If atom = 0 Then
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534 | Dim buf[1023] As TCHAR
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535 | wsprintf(buf, ToTCStr(Ex"Control: RegisterClasseEx failed. Error code: &h%08X\r\n"), GetLastError())
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536 | OutputDebugString(buf)
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537 | Debug
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538 | ExitThread(0)
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539 | End If
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540 |
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541 | With createParams
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542 | ' 値は暫定的なもの
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543 | .Style = WS_OVERLAPPEDWINDOW
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544 | .ExStyle = WS_EX_APPWINDOW
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545 | End With
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546 | End Sub
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547 |
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548 | Static Sub Uninitialize()
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549 | UnregisterClass(atom As ULONG_PTR As PCSTR, hInstance)
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550 | TlsFree(tlsIndex)
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551 | End Sub
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552 | Private
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553 | Static Const GWLP_THIS = SizeOf (LONG_PTR) * 0 As Long
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554 | Static Const GWLP_TAG = SizeOf (LONG_PTR) * 1 As Long
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555 |
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556 | ' Windowsから呼ばれるウィンドウプロシージャ。WndProc
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557 | Static Function WndProcFirst(hwnd As HWND, msg As DWord, wp As WPARAM, lp As LPARAM) As LRESULT
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558 | Dim rThis = Control.FromHandle(hwnd) As Control
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559 | If Object.ReferenceEquals(rThis As Object, Nothing) Then
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560 | Dim gchValue = TlsGetValue(tlsIndex) As LONG_PTR
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561 | Dim gch = GCHandle.FromIntPtr(gchValue)
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562 | rThis = gch.Target As Control
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563 | ' ウィンドウが作られて最初にWndProcFirstが呼ばれたとき
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564 | If Object.ReferenceEquals(rThis, Nothing) Then
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565 | ' あってはならない事態
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566 | Debug
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567 | ExitThread(0)
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568 | End If
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569 | ' Debug
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570 | rThis.wnd = New WindowHandle(hwnd)
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571 | SetWindowLongPtr(hwnd, GWLP_THIS, gchValue)
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572 | End If
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573 | Dim m As Message
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574 | m = Message.Create(hwnd, msg, wp, lp)
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575 | rThis.WndProc(m)
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576 | Return m.Result
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577 | End Function
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578 |
|
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579 | ' BeginInvokeが呼ばれたときの処理
|
---|
580 | Sub OnControlBeginInvoke(m As Message)
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---|
581 | Dim gch = GCHandle.FromIntPtr(m.LParam)
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---|
582 | Dim data = gch.Target As AsyncInvokeData
|
---|
583 | With data
|
---|
584 | Dim pfn = .FuncPtr
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585 | .AsyncResult.Result = pfn(.Data)
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586 | SetEvent(.AsyncResult.AsyncWaitHandle.Handle)
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587 | End With
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588 | End Sub
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589 | End Class
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590 |
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591 | Class _System_ControlIinitializer
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592 | Public
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593 | Sub _System_ControlIinitializer(hinst As HINSTANCE)
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594 | Control.Initialize(hinst)
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---|
595 | End Sub
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596 |
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597 | Sub ~_System_ControlIinitializer()
|
---|
598 | Control.Uninitialize()
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599 | End Sub
|
---|
600 | End Class
|
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601 |
|
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602 | #ifndef _SYSTEM_NO_INITIALIZE_CONTROL_
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603 | Dim _System_ControlInitializer As _System_ControlIinitializer(GetModuleHandle(0))
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604 | #endif '_SYSTEM_NO_INITIALIZE_CONTROL_
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605 |
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606 | #endif '__SYSTEM_WINDOWS_FORMS_CONTROL_AB__
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