1 | unit GraphicSet;
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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, Generics.Collections, LCLType, DOM,
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7 | XMLRead, XMLWrite, XML,
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8 | {$IFDEF DPI}Dpi.Graphics{$ELSE}
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9 | Graphics{$ENDIF};
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10 |
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11 | type
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12 | TGraphicSet = class;
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13 |
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14 | { TGraphicSetItem }
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15 |
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16 | TGraphicSetItem = class
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17 | private
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18 | function GetBoundsRect: TRect;
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19 | procedure SetBoundsRect(AValue: TRect);
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20 | public
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21 | Name: string;
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22 | Left: Integer;
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23 | Top: Integer;
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24 | Width: Integer;
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25 | Height: Integer;
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26 | GraphicSet: TGraphicSet;
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27 | procedure DrawTo(Canvas: TCanvas; Pos: TPoint);
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28 | procedure LoadFromNode(Node: TDOMNode);
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29 | procedure SaveToNode(Node: TDOMNode);
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30 | property BoundsRect: TRect read GetBoundsRect write SetBoundsRect;
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31 | end;
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32 |
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33 | { TGraphicSetItems }
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34 |
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35 | TGraphicSetItems = class(TObjectList<TGraphicSetItem>)
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36 | GraphicSet: TGraphicSet;
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37 | function SearchByName(Name: string): TGraphicSetItem;
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38 | function AddNew(Name: string): TGraphicSetItem;
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39 | procedure LoadFromNode(Node: TDOMNode);
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40 | procedure SaveToNode(Node: TDOMNode);
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41 | end;
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42 |
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43 | { TGraphicSet }
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44 |
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45 | TGraphicSet = class(TComponent)
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46 | public
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47 | Name: string;
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48 | Data: TBitmap;
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49 | Mask: TBitmap;
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50 | PixUsed: array of Byte;
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51 | Items: TGraphicSetItems;
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52 | procedure ResetPixUsed;
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53 | function GetItem(ItemName: string): TGraphicSetItem;
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54 | procedure LoadFromFile(FileName: string);
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55 | procedure SaveToFile(FileName: string);
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56 | constructor Create(AOwner: TComponent); override;
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57 | destructor Destroy; override;
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58 | end;
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59 |
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60 | TGraphicSetClass = class of TGraphicSet;
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61 |
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62 | { TGraphicSets }
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63 |
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64 | TGraphicSets = class(TObjectList<TGraphicSet>)
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65 | function SearchByName(Name: string): TGraphicSet;
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66 | function AddNew(Name: string): TGraphicSet;
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67 | procedure ResetPixUsed;
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68 | end;
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69 |
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70 | const
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71 | GraphicSetFileRootNode = 'GraphicSet';
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72 | GraphicSetFileExt = '.grs';
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73 |
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74 | procedure Register;
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75 |
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76 |
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77 | implementation
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78 |
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79 | resourcestring
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80 | SWrongFileFormat = 'Wrong file format.';
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81 | SGraphicItemNotFound = 'Graphic item %s not found in graphic set %s.';
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82 |
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83 | procedure Register;
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84 | begin
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85 | RegisterComponents('C-evo', [TGraphicSet]);
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86 | end;
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87 |
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88 | { TGraphicSetItem }
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89 |
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90 | function TGraphicSetItem.GetBoundsRect: TRect;
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91 | begin
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92 | Result := Bounds(Left, Top, Width, Height);
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93 | end;
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94 |
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95 | procedure TGraphicSetItem.SetBoundsRect(AValue: TRect);
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96 | begin
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97 | Left := AValue.Left;
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98 | Top := AValue.Top;
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99 | Width := AValue.Width;
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100 | Height := AValue.Height;
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101 | end;
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102 |
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103 | procedure TGraphicSetItem.DrawTo(Canvas: TCanvas; Pos: TPoint);
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104 | begin
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105 | { BitBltCanvas(Canvas, Pos.X, Pos.Y, BoundsRect.Width, BoundsRect.Height,
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106 | GraphicSet.Mask.Canvas, BoundsRect.Left, BoundsRect.Top, SRCAND);
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107 | BitBltCanvas(Canvas, Pos.X, Pos.Y, BoundsRect.Width, BoundsRect.Height,
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108 | GraphicSet.Data.Canvas, BoundsRect.Left, BoundsRect.Top, SRCPAINT);
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109 | }
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110 | end;
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111 |
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112 | procedure TGraphicSetItem.LoadFromNode(Node: TDOMNode);
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113 | begin
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114 | Name := ReadString(Node, 'Name', Name);
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115 | Left := ReadInteger(Node, 'Left', Left);
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116 | Top := ReadInteger(Node, 'Top', Top);
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117 | Width := ReadInteger(Node, 'Width', Width);
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118 | Height := ReadInteger(Node, 'Height', Height);
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119 | end;
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120 |
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121 | procedure TGraphicSetItem.SaveToNode(Node: TDOMNode);
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122 | begin
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123 | WriteString(Node, 'Name', Name);
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124 | WriteInteger(Node, 'Left', Left);
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125 | WriteInteger(Node, 'Top', Top);
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126 | WriteInteger(Node, 'Width', Width);
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127 | WriteInteger(Node, 'Height', Height);
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128 | end;
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129 |
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130 | { TGraphicSetItems }
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131 |
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132 | function TGraphicSetItems.SearchByName(Name: string): TGraphicSetItem;
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133 | var
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134 | I: Integer;
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135 | begin
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136 | I := 0;
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137 | while (I < Count) and (Items[I].Name <> Name) do Inc(I);
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138 | if I < Count then Result := Items[I]
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139 | else Result := nil;
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140 | end;
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141 |
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142 | function TGraphicSetItems.AddNew(Name: string): TGraphicSetItem;
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143 | begin
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144 | Result := TGraphicSetItem.Create;
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145 | Result.Name := Name;
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146 | Add(Result);
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147 | end;
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148 |
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149 | procedure TGraphicSetItems.LoadFromNode(Node: TDOMNode);
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150 | var
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151 | Node2: TDOMNode;
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152 | NewItem: TGraphicSetItem;
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153 | begin
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154 | Count := 0;
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155 | Node2 := Node.FirstChild;
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156 | while Assigned(Node2) and (Node2.NodeName = 'Item') do begin
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157 | NewItem := TGraphicSetItem.Create;
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158 | NewItem.GraphicSet := GraphicSet;
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159 | NewItem.LoadFromNode(Node2);
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160 | Add(NewItem);
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161 | Node2 := Node2.NextSibling;
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162 | end;
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163 | end;
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164 |
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165 | procedure TGraphicSetItems.SaveToNode(Node: TDOMNode);
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166 | var
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167 | I: Integer;
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168 | NewNode: TDOMNode;
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169 | begin
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170 | for I := 0 to Count - 1 do begin;
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171 | NewNode := Node.OwnerDocument.CreateElement('Item');
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172 | Node.AppendChild(NewNode);
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173 | Items[I].SaveToNode(NewNode);
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174 | end;
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175 | end;
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176 |
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177 | { TGraphicSet }
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178 |
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179 | procedure TGraphicSet.ResetPixUsed;
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180 | begin
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181 | SetLength(PixUsed, Data.Height div 49 * 10);
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182 | if Length(PixUsed) > 0 then
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183 | FillChar(PixUsed[0], Length(PixUsed), 0);
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184 | end;
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185 |
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186 | function TGraphicSet.GetItem(ItemName: string): TGraphicSetItem;
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187 | begin
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188 | Result := Items.SearchByName(ItemName);
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189 | if not Assigned(Result) then
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190 | raise Exception.Create(Format(SGraphicItemNotFound, [ItemName, Name]));
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191 | end;
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192 |
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193 | procedure TGraphicSet.LoadFromFile(FileName: string);
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194 | var
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195 | Doc: TXMLDocument;
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196 | RootNode: TDOMNode;
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197 | NewNode: TDOMNode;
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198 | begin
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199 | ReadXMLFile(Doc, FileName);
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200 | with Doc do
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201 | try
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202 | if DocumentElement.NodeName <> GraphicSetFileRootNode then
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203 | raise Exception.Create(SWrongFileFormat);
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204 | RootNode := Doc.DocumentElement;
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205 | with RootNode do begin
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206 | NewNode := FindNode('Items');
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207 | if Assigned(NewNode) then
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208 | Items.LoadFromNode(NewNode);
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209 | end;
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210 | finally
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211 | FreeAndNil(Doc);
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212 | end;
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213 | end;
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214 |
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215 | procedure TGraphicSet.SaveToFile(FileName: string);
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216 | var
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217 | NewNode: TDOMNode;
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218 | Doc: TXMLDocument;
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219 | RootNode: TDOMNode;
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220 | begin
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221 | Doc := TXMLDocument.Create;
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222 | with Doc do
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223 | try
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224 | RootNode := CreateElement(GraphicSetFileRootNode);
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225 | AppendChild(RootNode);
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226 | with RootNode do begin
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227 | NewNode := OwnerDocument.CreateElement('Items');
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228 | AppendChild(NewNode);
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229 | Items.SaveToNode(NewNode);
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230 | end;
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231 | WriteXMLFile(Doc, FileName);
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232 | finally
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233 | FreeAndNil(Doc);
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234 | end;
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235 | end;
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236 |
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237 | constructor TGraphicSet.Create(AOwner: TComponent);
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238 | begin
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239 | inherited;
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240 | Data := TBitmap.Create;
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241 | Data.PixelFormat := TPixelFormat.pf24bit;
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242 | Mask := TBitmap.Create;
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243 | Mask.PixelFormat := TPixelFormat.pf24bit;
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244 | Items := TGraphicSetItems.Create;
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245 | Items.GraphicSet := Self;
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246 | end;
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247 |
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248 | destructor TGraphicSet.Destroy;
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249 | begin
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250 | FreeAndNil(Items);
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251 | FreeAndNil(Data);
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252 | FreeAndNil(Mask);
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253 | inherited;
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254 | end;
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255 |
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256 | { TGraphicSets }
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257 |
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258 | function TGraphicSets.SearchByName(Name: string): TGraphicSet;
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259 | var
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260 | I: Integer;
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261 | begin
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262 | I := 0;
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263 | while (I < Count) and (Items[I].Name <> Name) do Inc(I);
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264 | if I < Count then Result := Items[I]
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265 | else Result := nil;
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266 | end;
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267 |
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268 | function TGraphicSets.AddNew(Name: string): TGraphicSet;
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269 | begin
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270 | Result := TGraphicSet.Create(nil);
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271 | Result.Name := Name;
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272 | Add(Result);
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273 | end;
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274 |
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275 | procedure TGraphicSets.ResetPixUsed;
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276 | var
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277 | I: Integer;
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278 | begin
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279 | for I := 0 to Count - 1 do
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280 | Items[I].ResetPixUsed;
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281 | end;
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282 |
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283 | end.
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284 |
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285 |
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