1 | unit Dpi.Menus;
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2 |
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3 | interface
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4 |
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5 | uses
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6 | Classes, SysUtils, LCLType, Menus;
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7 |
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8 | type
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9 | { TMenuItem }
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10 |
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11 | TMenuItem = class(TComponent)
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12 | private
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13 | FItems: TList;
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14 | FParent: TMenuItem;
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15 | FOnClick: TNotifyEvent;
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16 | function GetCaption: TTranslateString;
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17 | function GetChecked: Boolean;
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18 | function GetCount: Integer;
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19 | function GetEnabled: Boolean;
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20 | function GetGroupIndex: Byte;
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21 | function GetItem(Index: Integer): TMenuItem;
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22 | function GetOnClick: TNotifyEvent;
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23 | function GetRadioItem: Boolean;
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24 | function GetShortCut: TShortCut;
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25 | function GetVisible: Boolean;
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26 | function IsCaptionStored: Boolean;
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27 | function IsCheckedStored: Boolean;
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28 | function IsEnabledStored: Boolean;
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29 | function IsShortCutStored: Boolean;
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30 | function IsVisibleStored: Boolean;
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31 | procedure SetCaption(AValue: TTranslateString);
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32 | procedure SetChecked(AValue: Boolean);
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33 | procedure SetEnabled(AValue: Boolean);
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34 | procedure SetGroupIndex(AValue: Byte);
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35 | procedure SetOnClick(AValue: TNotifyEvent);
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36 | procedure SetRadioItem(AValue: Boolean);
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37 | procedure SetShortCut(AValue: TShortCut);
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38 | procedure SetVisible(AValue: Boolean);
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39 | procedure OnClickHandler(Sender: TObject);
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40 | protected
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41 | function GetNativeMenuItem: Menus.TMenuItem; virtual;
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42 | procedure SetParentComponent(AValue: TComponent); override;
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43 | public
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44 | NativeMenuItem: Menus.TMenuItem;
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45 | constructor Create(AOwner: TComponent); override;
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46 | destructor Destroy; override;
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47 | procedure Delete(Index: Integer);
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48 | procedure Add(Item: TMenuItem);
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49 | procedure Insert(Index: Integer; Item: TMenuItem);
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50 | function IndexOf(Item: TMenuItem): Integer;
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51 | procedure Remove(Item: TMenuItem);
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52 | property Items[Index: Integer]: TMenuItem read GetItem; default;
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53 | property Count: Integer read GetCount;
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54 | procedure Clear;
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55 | procedure Click; virtual;
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56 | published
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57 | property RadioItem: Boolean read GetRadioItem write SetRadioItem default False;
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58 | property ShortCut: TShortCut read GetShortCut write SetShortCut
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59 | stored IsShortCutStored default 0;
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60 | property Enabled: Boolean read GetEnabled write SetEnabled
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61 | stored IsEnabledStored default True;
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62 | property Visible: Boolean read GetVisible write SetVisible
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63 | stored IsVisibleStored default True;
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64 | property Checked: Boolean read GetChecked write SetChecked
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65 | stored IsCheckedStored default False;
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66 | property Caption: TTranslateString read GetCaption write SetCaption
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67 | stored IsCaptionStored;
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68 | property OnClick: TNotifyEvent read GetOnClick write SetOnClick;
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69 | property GroupIndex: Byte read GetGroupIndex write SetGroupIndex default 0;
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70 | end;
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71 |
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72 | TMenu = class(TComponent)
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73 | private
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74 | FItems: TMenuItem;
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75 | protected
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76 | function GetNativeMenu: Menus.TMenu; virtual;
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77 | public
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78 | property Items: TMenuItem read FItems;
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79 | constructor Create(AOwner: TComponent); override;
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80 | destructor Destroy; override;
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81 | end;
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82 |
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83 | { TPopupMenu }
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84 |
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85 | TPopupMenu = class(TMenu)
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86 | private
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87 | function GetAutoPopup: Boolean;
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88 | procedure SetAutoPopup(AValue: Boolean);
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89 | protected
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90 | function GetNativeMenu: Menus.TMenu; override;
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91 | function GetNativePopupMenu: Menus.TPopupMenu; virtual;
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92 | public
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93 | NativePopupMenu: Menus.TPopupMenu;
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94 | procedure PopUp; overload;
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95 | procedure PopUp(X, Y: Integer); virtual; overload;
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96 | constructor Create(AOwner: TComponent); override;
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97 | destructor Destroy; override;
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98 | published
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99 | property AutoPopup: Boolean read GetAutoPopup write SetAutoPopup default True;
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100 | end;
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101 |
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102 | function ShortCut(const Key: Word; const Shift: TShiftState): TShortCut;
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103 | procedure Register;
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104 |
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105 |
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106 | implementation
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107 |
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108 | uses
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109 | Dpi.Common, Dpi.Controls, LCLStrConsts;
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110 |
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111 | function ShortCut(const Key: Word; const Shift: TShiftState): TShortCut;
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112 | begin
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113 | Result := Menus.ShortCut(Key, Shift);
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114 | end;
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115 |
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116 | procedure Register;
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117 | begin
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118 | RegisterComponents(DpiControlsComponentPaletteName, [TPopupMenu]);
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119 | end;
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120 |
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121 | { TMenu }
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122 |
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123 | function TMenu.GetNativeMenu: Menus.TMenu;
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124 | begin
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125 | Result := nil;
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126 | end;
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127 |
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128 | constructor TMenu.Create(AOwner: TComponent);
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129 | begin
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130 | inherited;
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131 | FItems := TMenuItem.Create(Self);
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132 | end;
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133 |
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134 | destructor TMenu.Destroy;
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135 | begin
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136 | FreeAndNil(FItems);
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137 | inherited;
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138 | end;
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139 |
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140 | { TMenuItem }
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141 |
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142 | function TMenuItem.GetCaption: TTranslateString;
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143 | begin
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144 | Result := GetNativeMenuItem.Caption;
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145 | end;
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146 |
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147 | function TMenuItem.GetChecked: Boolean;
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148 | begin
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149 | Result := GetNativeMenuItem.Checked;
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150 | end;
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151 |
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152 | function TMenuItem.GetCount: Integer;
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153 | begin
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154 | Result := FItems.Count;
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155 | end;
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156 |
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157 | function TMenuItem.GetEnabled: Boolean;
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158 | begin
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159 | Result := GetNativeMenuItem.Enabled;
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160 | end;
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161 |
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162 | function TMenuItem.GetGroupIndex: Byte;
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163 | begin
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164 | Result := GetNativeMenuItem.GroupIndex;
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165 | end;
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166 |
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167 | function TMenuItem.GetItem(Index: Integer): TMenuItem;
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168 | begin
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169 | Result := TMenuItem(FItems[Index]);
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170 | end;
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171 |
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172 | function TMenuItem.GetOnClick: TNotifyEvent;
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173 | begin
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174 | Result := FOnClick;
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175 | end;
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176 |
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177 | function TMenuItem.GetRadioItem: Boolean;
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178 | begin
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179 | Result := GetNativeMenuItem.RadioItem;
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180 | end;
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181 |
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182 | function TMenuItem.GetShortCut: TShortCut;
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183 | begin
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184 | Result := GetNativeMenuItem.ShortCut;
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185 | end;
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186 |
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187 | function TMenuItem.GetVisible: Boolean;
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188 | begin
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189 | Result := GetNativeMenuItem.Visible;
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190 | end;
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191 |
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192 | function TMenuItem.IsCaptionStored: Boolean;
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193 | begin
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194 | Result := False;
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195 | end;
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196 |
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197 | function TMenuItem.IsCheckedStored: Boolean;
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198 | begin
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199 | Result := False;
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200 | end;
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201 |
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202 | function TMenuItem.IsEnabledStored: Boolean;
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203 | begin
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204 | Result := False;
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205 | end;
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206 |
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207 | function TMenuItem.IsShortCutStored: Boolean;
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208 | begin
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209 | Result := False;
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210 | end;
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211 |
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212 | function TMenuItem.IsVisibleStored: Boolean;
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213 | begin
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214 | Result := False;
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215 | end;
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216 |
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217 | procedure TMenuItem.SetCaption(AValue: TTranslateString);
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218 | begin
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219 | GetNativeMenuItem.Caption := AValue;
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220 | end;
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221 |
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222 | procedure TMenuItem.SetChecked(AValue: Boolean);
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223 | begin
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224 | GetNativeMenuItem.Checked := AValue;
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225 | end;
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226 |
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227 | procedure TMenuItem.SetEnabled(AValue: Boolean);
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228 | begin
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229 | GetNativeMenuItem.Enabled := AValue;
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230 | end;
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231 |
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232 | procedure TMenuItem.SetGroupIndex(AValue: Byte);
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233 | begin
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234 | GetNativeMenuItem.GroupIndex := AValue;
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235 | end;
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236 |
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237 | procedure TMenuItem.SetOnClick(AValue: TNotifyEvent);
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238 | begin
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239 | FOnClick := AValue;
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240 | end;
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241 |
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242 | procedure TMenuItem.SetRadioItem(AValue: Boolean);
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243 | begin
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244 | GetNativeMenuItem.RadioItem := AValue;
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245 | end;
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246 |
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247 | procedure TMenuItem.SetShortCut(AValue: TShortCut);
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248 | begin
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249 | GetNativeMenuItem.ShortCut := AValue;
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250 | end;
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251 |
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252 | procedure TMenuItem.SetVisible(AValue: Boolean);
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253 | begin
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254 | GetNativeMenuItem.Visible := AValue;
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255 | end;
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256 |
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257 | procedure TMenuItem.OnClickHandler(Sender: TObject);
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258 | begin
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259 | if Assigned(FOnClick) then
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260 | FOnClick(Self);
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261 | end;
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262 |
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263 | procedure TMenuItem.Delete(Index: Integer);
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264 | begin
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265 | FItems.Delete(Index);
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266 | GetNativeMenuItem.Delete(Index);
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267 | end;
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268 |
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269 | procedure TMenuItem.Add(Item: TMenuItem);
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270 | begin
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271 | Insert(GetCount, Item);
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272 | end;
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273 |
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274 | procedure TMenuItem.Insert(Index: Integer; Item: TMenuItem);
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275 | begin
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276 | FItems.Insert(Index, Item);
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277 | GetNativeMenuItem.Insert(Index, Item.GetNativeMenuItem);
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278 | end;
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279 |
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280 | function TMenuItem.IndexOf(Item: TMenuItem): Integer;
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281 | begin
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282 | if FItems = nil then
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283 | Result := -1
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284 | else
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285 | Result := FItems.IndexOf(Item);
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286 | end;
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287 |
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288 | procedure TMenuItem.Remove(Item: TMenuItem);
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289 | var
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290 | I: Integer;
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291 | begin
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292 | I := IndexOf(Item);
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293 | if I < 0 then
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294 | raise EMenuError.Create(SMenuNotFound);
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295 | Delete(I);
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296 | end;
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297 |
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298 | procedure TMenuItem.Clear;
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299 | begin
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300 | GetNativeMenuItem.Clear;
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301 | FItems.Clear;
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302 | end;
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303 |
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304 | procedure TMenuItem.Click;
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305 | begin
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306 | GetNativeMenuItem.Click;
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307 | end;
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308 |
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309 | function TMenuItem.GetNativeMenuItem: Menus.TMenuItem;
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310 | begin
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311 | if not Assigned(NativeMenuItem) then begin
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312 | NativeMenuItem := Menus.TMenuItem.Create(nil);
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313 | NativeMenuItem.Name := 'Native' + Name;
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314 | NativeMenuItem.OnClick := OnClickHandler;
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315 | end;
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316 | Result := NativeMenuItem;
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317 | end;
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318 |
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319 | procedure TMenuItem.SetParentComponent(AValue: TComponent);
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320 | begin
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321 | if (FParent = AValue) then Exit;
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322 | if Assigned(FParent) then FParent.Remove(Self);
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323 | if Assigned(AValue) then
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324 | begin
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325 | if (AValue is TMenu)
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326 | then TMenu(AValue).Items.Add(Self)
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327 | else if (AValue is TMenuItem)
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328 | then TMenuItem(AValue).Add(Self)
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329 | else
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330 | raise Exception.Create('TDpiMenuItem.SetParentComponent: suggested parent not of type TDpiMenu or TDpiMenuItem');
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331 | end;
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332 | end;
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333 |
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334 | constructor TMenuItem.Create(AOwner: TComponent);
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335 | begin
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336 | inherited;
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337 | FItems := TList.Create;
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338 | end;
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339 |
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340 | destructor TMenuItem.Destroy;
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341 | begin
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342 | FreeAndNil(FItems);
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343 | // TODO: Release menu items
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344 | //FreeAndNil(NativeMenuItem);
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345 | inherited;
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346 | end;
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347 |
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348 | { TPopupMenu }
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349 |
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350 | procedure TPopupMenu.PopUp;
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351 | var
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352 | Pos: TPoint;
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353 | begin
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354 | Pos := Mouse.CursorPos;
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355 | Popup(Pos.X, Pos.Y);
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356 | end;
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357 |
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358 | procedure TPopupMenu.PopUp(X, Y: Integer);
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359 | begin
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360 | GetNativePopupMenu.PopUp(ScaleToNative(X), ScaleToNative(Y));
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361 | end;
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362 |
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363 | constructor TPopupMenu.Create(AOwner: TComponent);
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364 | begin
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365 | inherited;
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366 | GetNativePopupMenu;
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367 | end;
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368 |
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369 | function TPopupMenu.GetAutoPopup: Boolean;
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370 | begin
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371 | Result := GetNativePopupMenu.AutoPopup;
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372 | end;
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373 |
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374 | procedure TPopupMenu.SetAutoPopup(AValue: Boolean);
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375 | begin
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376 | GetNativePopupMenu.AutoPopup := AValue;
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377 | end;
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378 |
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379 | function TPopupMenu.GetNativeMenu: Menus.TMenu;
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380 | begin
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381 | Result := GetNativePopupMenu;
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382 | end;
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383 |
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384 | function TPopupMenu.GetNativePopupMenu: Menus.TPopupMenu;
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385 | begin
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386 | if not Assigned(NativePopupMenu) then begin
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387 | NativePopupMenu := Menus.TPopupMenu.Create(nil);
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388 | if Assigned(Items.NativeMenuItem) then Items.NativeMenuItem.Free;
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389 | Items.NativeMenuItem := NativePopupMenu.Items;
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390 | end;
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391 | Result := NativePopupMenu;
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392 | end;
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393 |
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394 | destructor TPopupMenu.Destroy;
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395 | begin
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396 | if Assigned(NativePopupMenu) then FreeAndNil(NativePopupMenu);
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397 | inherited;
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398 | end;
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399 |
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400 |
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401 | end.
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402 |
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