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MapObject.pas
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{+------------------------------------------------------------------------+
| AutoREALM. Copyright (c) 2000, Andrew J. Gryc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or (at |
| your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| For a copy of the GNU General Public License, write to the Free |
| Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
| 02111-1307, USA. |
+------------------------------------------------------------------------+}
unit MapObject;
interface
uses SysUtils, imagechecklistbox, Classes, Graphics, DrawLines, Forms, Primitives, Clipbrd,
MatrixMath, Geometry, StdCtrls, LocalizedStrings, DOM
;
{ ImageCheckListBox, jpeg, DIMime }
const // AutoREALM pre-release versions (prior to 1.0)
// Oldest supported file format
MAP_VERSION_3 = $00000003;
// AutoREALM versions 1.0 through 1.03
// * Addition of LA (Landscape) chunk
MAP_VERSION_4 = $00000004;
// AutoREALM versions 1.04 through 1.19
// * Addition of Bitmap object type
// * Addition of hyperlink object type
MAP_VERSION_5 = $00000005;
// AutoREALM versions 1.20 and beyond...
// * Addition of UUID to symbols in AuS file.
// * Creation of user symbol object (symbols were previously just grouped objects).
MAP_VERSION_6 = $00000006;
CURRENT_MAP_VERSION = MAP_VERSION_6;
MapVersion = CURRENT_MAP_VERSION;
type
ModType = (modGrid, modBkColor, modUnitType, modUnitScale, modOverlay,
modOverlayState, modViewport, modViews,
modComments, modSettings, modPrinter,
modDeleted, modAdded, modChanged, modSymbols, modPushPins);
ChunkType = (CO_CHUNK, // Color Chunk: background and grid colors
CM_CHUNK, // Comment Chunk: Map/symbol comments
OV_CHUNK, // Overlay Chunk: overlays in the map
GR_CHUNK, // Grid Chunk: grid/snap settings
VW_CHUNK, // View Chunk: Viewpoints
PP_CHUNK, // Pushpin Chunk: Push pins
OB_CHUNK, // Object chunk: Actual map objects
EO_CHUNK, // End chunk: End of map file
LA_CHUNK, // Landscape chunk: printer settings for landscape/portrait
SE_CHUNK, // Selected chunk: Saved selection states
PH_CHUNK, // Pushpin History
UNDO_OPERATION // Undo : Not a real chunk, but saves any addition info used in creating undo records
);
AlignType = (NO_CHANGE, LEFT_TOP, CENTERS, RIGHT_BOTTOM,
SLANTFORWARD, SLANTBACKWARD, SCATTER, JOG,
SPACE_EQUALLY, STACK);
OrderType = (Order_None, Order_LEFT_TOP, Order_RIGHT_TOP, Order_LEFT_BOTTOM, Order_RIGHT_BOTTOM,
Order_CENTER, Order_EDGE, Order_RANDOM);
// If any new enums are added, the XML routines MUST be changed as well!
PushPinFlagType = (PP_WaypointsVisible, PP_ShowNumber, PP_ShowNote);
PushPinFlagSet = set of PushPinFlagType;
ChunkSet = set of ChunkType;
IdSet = set of char;
UndoRecord = record
Name: string;
Stream: TMemoryStream;
// Doc : TDOMDocument;
modflags: set of ModType;
end;
PushPinPoint = record
note:string;
point:CoordPoint;
end;
PushPinInformation = record
Name: string;
HistoryCount:integer;
History:array of PushPinPoint;
end;
MapCollection = class
private
head, tail: DrawPrimitive;
Parent: TForm;
modflags: set of ModType;
ViewList: TList;
fLandscape: boolean;
supresscount: integer;
MapComments: string;
fReadOnly:boolean;
{ Speed enhancements to panning }
UsePanRects: boolean;
PanRect1, PanRect2: TRect;
{ Undo information }
UndoMax: integer;
CurrentUndo: integer;
UndoArray: array of UndoRecord;
{ Pushpin information }
pushpin:array of PushPinInformation;
sPushpinflags:PushPinFlagSet;
procedure SetUndoMax(n: integer);
procedure RemovePreUndo;
procedure RecreateMapState(number: integer);
procedure SetLandscape(b: boolean);
procedure WriteSelectStates(stream: TStream);
procedure ReadSelectStates(stream: TStream; newhead: DrawPrimitive);
procedure SupressRedraw;
procedure RestoreRedraw;
function GetSelectedObjectList:TList;
function GetPushPinName(index:integer):string;
procedure SetPushPinName(index:integer; s:string);
function GetPushPinHistoryCount(index:integer):integer;
function GetPushPinHistoryPoint(index:integer; history:integer):CoordPoint;
procedure SetPushPinHistoryPoint(index:integer; history:integer; pt:CoordPoint);
function GetPushPinPoint(index:integer):CoordPoint;
procedure SetPushPinPoint(index:integer; pt:CoordPoint);
function GetPushPinHistoryNote(index:integer; history:integer):string;
procedure SetPushPinHistoryNote(index:integer; history:integer; s:string);
function GetPushPinAnnotation(index:integer; history:integer):string;
procedure SetPushPinFlags(ps:PushPinFlagSet);
function GetPushPinText:string;
procedure SetPushPinText(s:string);
procedure SetReadOnly(b:boolean);
function ReadOnlyPrevents:boolean;
protected
Function GetOverlaysAsDOMElement(D: TDOMDocument): TDOMElement;
Procedure LoadOverlaysFromDOMElement(E: TDOMElement);
procedure SaveOverlaysToStream(stream: TStream);
procedure LoadOverlaysFromStream(stream: TStream);
procedure SplitSelectedChain(var mainhead, maintail: DrawPrimitive;
var chainhead, chaintail: DrawPrimitive);
procedure GetFollowingSelection(var insertat:DrawPrimitive);
procedure GetTwoPriorSelection(var insertat:DrawPrimitive);
Procedure SetMapChain(D: DrawPrimitive);
public
CurrentView: ViewPoint;
BasePrimitives : TStringList;
function AnythingSelected: boolean;
property ReadOnly:boolean read fReadOnly write SetReadOnly;
property Landscape: boolean read fLandscape write SetLandscape;
procedure SynchronizeOverlayList(list: TImageCheckListBox);
function GetViewPoints: integer;
function GetViewPoint(index: integer): ViewPoint;
function GetCurrentViewPoint: ViewPoint;
procedure SetCurrentViewPoint(const view: ViewPoint);
function FindViewPoint(const name: string): integer;
procedure DeleteViewPoint(index: integer);
function SaveViewPoint(const view: ViewPoint; name: string): integer;
procedure RestoreLastView;
procedure RemoveAllViews;
procedure Clear;
function IsEmpty: boolean;
function Modified: boolean;
procedure ClearModified; overload;
procedure ClearModified(mtype: ModType); overload;
procedure SetModified(mtype: ModType);
function ModifiedDescription: string;
procedure Invalidate;
procedure InvalidateRect(ext: TRect; erase: boolean);
procedure InvalidateSelect(erase: boolean);
procedure Grid(const View: Viewpoint);
procedure Draw(const View: Viewpoint; showhandles: boolean);
function OverlaysInUse: OverlaySet;
procedure SelectAll;
procedure ShowAll(var view: ViewPoint; zoomfactor: Coord);
procedure ClearSelection(redraw: boolean = true);
procedure CenterSelection(rescale: boolean = false);
procedure StartAdding(name: string);
procedure EndAdding;
procedure Pan(dx, dy: integer);
{ function GetMetafile(all: boolean): TMetaFile; }
function GetBitmap(all: boolean; viewonly:boolean; width,height:integer): TBitmap;
function FindScalpelPoint(x, y: Coord; var p: DrawPrimitive; var index: integer): boolean;
function FindClosestPoint(dx, dy: Coord; var point: CoordPoint; allowselected: boolean): boolean;
function FindClosestPointOn(dx, dy: Coord; var point: CoordPoint; Var Angle: Coord; allowselected: boolean): boolean;
Function FindClosestIntersection(dx, dy: Coord; var point: CoordPoint): Boolean;
procedure SliceAlong(S1,S2: CoordPoint);
Procedure SliceAtPoint(S: CoordPoint);
procedure ReverseSelected(styleonly:boolean);
function SetFractalStateSelected(state:FractalState):boolean;
procedure SelectClosestObject(dx, dy: Coord);
function SelectClickedObject(dx, dy: Coord): integer;
function Select(rect: CoordRect): integer;
procedure SelectFromPoint(x, y: Coord; AcceptableTypes: IdSet);
procedure IterateSelect(rect: CoordRect);
procedure MoveSelection(dx, dy: Coord);
procedure ApplyMatrix(apply: Matrix);
function CenterMatrix(mat: Matrix): Matrix;
procedure RotateSelection(degrees: double);
procedure ScaleSelection(xfactor, yfactor: double);
procedure SkewSelection(sx, sy: double);
procedure FlipSelection(xaxis, yaxis: boolean);
procedure AlignSelection(h, v, wd, hg: AlignType);
procedure OrderSelection(order: OrderType);
procedure CreateArray(hc, vc: integer; hs, vs: Coord; hbetween, vbetween: boolean;
Ellipse,Rotate: Boolean; ex,ey: Coord);
function MoveHandle(var mode: HandleMode; origx, origy, dx, dy: Coord): boolean;
function FindHandle(x, y: Coord; all: boolean = false): DrawPrimitive;
function FindHyperlink(x, y: Coord; var hypertext:string; var hyperflags:THyperlinkFlags): boolean;
function FindEndPoint(var x, y: Coord; ignoreObject: DrawPrimitive; var p: DrawPrimitive): boolean;
function FindPointOn(var x, y, Angle: Coord; ignoreObject: DrawPrimitive; var p: DrawPrimitive): boolean;
procedure AddObject(obj: DrawPrimitive);
function Extent(view: ViewPoint; all: boolean): TRect;
function ExtentFloat(view: ViewPoint; all: boolean): CoordRect;
function CoordExtent(all:boolean): CoordRect;
procedure RefreshExtent;
function SetStyle(style: StyleAttrib): boolean;
function GetStyle: StyleAttrib;
function SetSeed(seed: integer): boolean;
function GetSeed: integer;
function SetColor(color: TColor): boolean;
function GetColor: TColor;
function SetFillColor(color: TColor): boolean;
function GetFillColor: TColor;
function SetOverlay(overlay: byte): boolean;
function GetOverlay: integer;
function SetRoughness(rough: integer): boolean;
function GetRoughness: integer;
function SetTextAttrib(const View: Viewpoint; const attrib: TextAttrib): boolean;
function GetTextAttrib: TextAttrib;
procedure RemoveOverlay(overlay, replacement: integer; delovl: boolean);
procedure Delete;
procedure Group;
procedure UnGroup;
procedure Decompose;
procedure DeleteSelected;
procedure GroupSelected;
procedure UnGroupSelected;
procedure DecomposeSelected;
procedure CloseSelectedFigures;
procedure DecomposeForPrintout(MapView: ViewPoint);
procedure SendToBack;
procedure BringToFront;
procedure SendBackward;
procedure BringForward;
constructor Create(ParentForm: TForm); virtual;
destructor Destroy; override;
function GetSelectedObjects(ParentForm: TForm): MapCollection;
Procedure ReadFromDOMDocument(D: TDOMDocument; Selected: Boolean; Version: Integer = CURRENT_MAP_VERSION; Insert: Boolean = False);
Function GetAsDOMDocument(All: Boolean; SaveSet: ChunkSet = []): TDOMDocument;
Procedure ReadFromDOMElement(E: TDOMElement; Selected: Boolean; Version: Integer = CURRENT_MAP_VERSION; Insert: Boolean = False);
Function GetAsDOMElement(D: TDOMDocument; All: Boolean; SaveSet: ChunkSet = []): TDOMElement;
procedure Write(stream: TStream; all,Full,UseAliasInfo: boolean; saveset: ChunkSet = []);
procedure Read(stream: TStream; selected,Full,UseAliasInfo: boolean; version:integer=CURRENT_MAP_VERSION; insert:boolean = false);
{ function ReadMetafile(Meta: TMetaFile; selected: boolean): boolean; }
function InsertMap(filename: string): boolean;
{ function InsertMetafile(filename: string): boolean; }
function InsertBitmap(filename: string): boolean;
function InsertJPEG(filename: string): boolean;
function CopyContents(FullCopy: Boolean = False): DrawPrimitive;
procedure RestoreContents(d:DrawPrimitive);
procedure Cut;
procedure Copy;
procedure Paste;
procedure SetUndoPoint(name: string; compress: boolean = false);
function Undo: boolean;
function Redo: boolean;
function CurrentUndoName: string;
function CurrentRedoName: string;
property UndoLevels: integer read UndoMax write SetUndoMax;
property Comments: string read MapComments write MapComments;
property PushPinFlags:PushPinFlagSet read sPushpinflags write SetPushPinFlags;
property PushPinText:string read GetPushPinText write SetPushPinText;
property PushPinName[index:integer]:string read GetPushPinName write SetPushPinName;
property PushPinPoint[index:integer]:CoordPoint read GetPushPinPoint write SetPushPinPoint;
property PushPinHistoryCount[index:integer]:integer read GetPushPinHistoryCount;
property PushPinHistoryPoint[index:integer; history:integer]:CoordPoint read GetPushPinHistoryPoint write SetPushPinHistoryPoint;
property PushPinHistoryNote[index:integer; history:integer]:string read GetPushPinHistoryNote write SetPushPinHistoryNote;
property PushPinAnnotation[index:integer; history:integer]:string read GetPushPinAnnotation;
procedure PushPinHistoryPointAdd(index:integer; pt:CoordPoint; note:string);
procedure PushPinHistoryClear(index:integer);
function PushPinPlaced(index:integer):boolean;
function PushPinCount:integer;
Procedure DisplaySelectedSize;
Procedure CleanupBaseList;
Property First: DrawPrimitive Read Head;
end;
var
Map: MapCollection;
LastViewName: string = res_mapobj_view_sav;
Function NewIntegerProperty(D: TDOMDocument; ElementName: String; I: Integer): TDOMElement;
Function NewCardinalProperty(D: TDOMDocument; ElementName: String; I: Cardinal): TDOMElement;
Function NewStringProperty(D: TDOMDocument; ElementName,St: String): TDOMElement;
Function NewBooleanProperty(D: TDOMDocument; ElementName: String; B: Boolean): TDOMElement;
Function NewDoubleProperty(D: TDOMDocument; ElementName: String; C: Double): TDOMElement;
Function NewCoordProperty(D: TDOMDocument; ElementName: String; C: Coord): TDOMElement;
Function NewCoordPointProperty(D: TDOMDocument; ElementName: String; C: CoordPoint): TDOMElement;
Function NewCoordPointsProperty(D: TDOMDocument; ElementName: String; P: PCoordArray; Count: Integer): TDOMElement;
Function NewCoordRectProperty(D: TDOMDocument; ElementName: String; C: CoordRect): TDOMElement;
Function GetIntegerProperty(E: TDOMElement; ElementName: String): Integer;
Function GetCardinalProperty(E: TDOMElement; ElementName: String): Cardinal;
Function GetStringProperty(E: TDOMElement; ElementName: String): String;
Function GetBooleanProperty(E: TDOMElement; ElementName: String): Boolean;
Function GetDoubleProperty(E: TDOMElement; ElementName: String): Double;
Function GetCoordProperty(E: TDOMElement; ElementName: String): Coord; Overload;
Function GetCoordProperty(E: TDOMElement): Coord; Overload;
Function GetCoordPointProperty(E: TDOMElement; ElementName: String): CoordPoint; Overload;
Function GetCoordPointProperty(E: TDOMElement): CoordPoint; Overload;
Procedure GetCoordPointsProperty(E: TDOMElement; ElementName: String; P: PCoordArray; Count: Integer);
Function GetCoordRectProperty(E: TDOMElement; ElementName: String): CoordRect;
implementation
uses Main, SettingsDialog, Math, GraphGrid, MapSettings, Dialogs, StreamUtil, Menus, XMLUnit;
const
selborder = 3;
// Use instead of TEnhMetaRecord to cast the pointers into so we don't
// get warnings about access to invalid subrange (dParm[0..0]).
type
ENHMETARECORD = packed record
iType: DWORD; { Record type EMR_XXX}
nSize: DWORD; { Record size in bytes}
dParm: array[0..32767] of DWORD; { Parameters}
end;
MetaGDIObject = record
Color: TColor;
Brush: boolean;
style: StyleAttrib;
end;
PMapCollection = ^MapCollection;
MetaGDIObjectArray = array[0..32767] of MetaGDIObject;
PMetaGDIObjectArray = ^MetaGDIObjectArray;
MetaEnumExtra = record
HandleCount: integer;
HandleObj: PMetaGDIObjectArray;
foreground, background: TColor;
currx, curry: Coord;
style: StyleAttrib;
PMap: PMapCollection;
TryBitmap: boolean;
end;
PMetaEnumExtra = ^MetaEnumExtra;
HandleTable = packed array[0..32767] of HGDIOBJ;
var
MapFormat: Word;
{-----------------------------------------------------------------}
Function MyFloatToStr(E: Extended): String;
Begin
Result := Format('%2.4f',[E]);
// 2003-04-13 Messie: Format uses the regionalized windows variable
// DecimalSeperator as the decimal seperator. We always want a . as
// DecimalSeparator, so we need a workaround.
if( DecimalSeparator <> '.') then Result[Pos(DecimalSeparator,Result)] := '.';
End; // MyFloatToStr
Function NewIntegerProperty(D: TDOMDocument; ElementName: String; I: Integer): TDOMElement;
Var E: TDOMElement;
Begin
E := D.createElement(ElementName);
E.appendChild(D.createTextNode(IntToStr(I)));
Result := E;
End; // NewIntegerProperty
Function NewCardinalProperty(D: TDOMDocument; ElementName: String; I: Cardinal): TDOMElement;
Var E: TDOMElement;
Begin
E := D.createElement(ElementName);
E.appendChild(D.createTextNode(IntToStr(I)));
Result := E;
End; // NewCardinalProperty
Function NewStringProperty(D: TDOMDocument; ElementName,St: String): TDOMElement;
Var E: TDOMElement;
Begin
E := D.createElement(ElementName);
E.appendChild(D.createTextNode(St));
Result := E;
End; // NewStringProperty
Function NewBooleanProperty(D: TDOMDocument; ElementName: String; B: Boolean): TDOMElement;
Var E: TDOMElement;
Begin
E := D.createElement(ElementName);
E.appendChild(D.createTextNode(BoolToStr(B,False)));
Result := E;
End; // NewBooleanProperty
Function NewDoubleProperty(D: TDOMDocument; ElementName: String; C: Double): TDOMElement;
Var E: TDOMElement;
Begin
E := D.createElement(ElementName);
E.appendChild(D.createTextNode(MyFloatToStr(C)));
Result := E;
End; // NewDoubleProperty
Function NewCoordProperty(D: TDOMDocument; ElementName: String; C: Coord): TDOMElement;
Var E: TDOMElement;
Begin
E := D.createElement(ElementName);
E.appendChild(D.createTextNode(MyFloatToStr(C)));
Result := E;
End; // NewCoordProperty
Function NewCoordPointProperty(D: TDOMDocument; ElementName: String; C: CoordPoint): TDOMElement;
Var E: TDOMElement;
Begin
E := D.createElement(ElementName);
E.appendChild(D.createTextNode(MyFloatToStr(C.X) + ',' + MyFloatToStr(C.Y)));
Result := E;
End; // NewCoordPointProperty
Function NewCoordPointsProperty(D: TDOMDocument; ElementName: String; P: PCoordArray; Count: Integer): TDOMElement;
Var
E : TDOMElement;
St : String;
I : Integer;
Begin
E := D.createElement(ElementName);
St := '';
For I := 0 To Count - 1 Do
Begin
If St <> '' Then St := St + ':';
St := St + MyFloatToStr(P^[I].X) + ',' + MyFloatToStr(P^[I].Y)
End; // For I
E.appendChild(D.createTextNode(St));
Result := E;
End; // NewCoordPointsProperty
Function NewCoordRectProperty(D: TDOMDocument; ElementName: String; C: CoordRect): TDOMElement;
Var E: TDOMElement;
Begin
E := D.createElement(ElementName);
E.appendChild(D.createTextNode(MyFloatToStr(C.Left) + ',' +
MyFloatToStr(C.Top) + ',' +
MyFloatToStr(C.Right) + ',' +
MyFloatToStr(C.Bottom)));
Result := E;
End; // NewCoordRectProperty
Function GetIntegerProperty(E: TDOMElement; ElementName: String): Integer;
Var
E1,E2 : TDOMNode;
I,J : Integer;
Begin
E1 := E.getFirstChildElement(ElementName);
If E1 <> Nil Then
Begin
E2 := E1.firstChild;
If (E2 <> Nil) And (E2 Is TDOMText) Then
Begin
Val(Trim((E2 As TDOMText).data),I,J);
If J = 0 Then Result := I Else Result := 0;
End
Else Result := 0;
End
Else
Begin
// 2003/05/21 - J.Friant
// Elements with only one value (such as <ID>1</ID>)
// fail on getFirstChildElement, apparently because you
// can (should?) access the firstChild property directly.
E1 := E.firstChild;
If (E1 <> Nil) And (E1 Is TDOMText) Then
Begin
Val(Trim((E1 As TDOMText).data),I,J);
If J = 0 Then Result := I Else Result := 0;
End
Else Result := 0;
End;
End; // GetIntegerProperty
Function GetCardinalProperty(E: TDOMElement; ElementName: String): Cardinal;
Var
E1,E2 : TDOMNode;
I : Cardinal;
J : Integer;
Begin
E1 := E.getFirstChildElement(ElementName);
If E1 <> Nil Then
Begin
E2 := E1.firstChild;
If (E2 <> Nil) And (E2 Is TDOMText) Then
Begin
Val(Trim((E2 As TDOMText).data),I,J);
If J = 0 Then Result := I Else Result := 0;
End
Else Result := 0;
End
Else Result := 0;
End; // GetCardinalProperty
Function GetStringProperty(E: TDOMElement; ElementName: String): String;
Var E1,E2: TDOMNode;
Begin
E1 := E.getFirstChildElement(ElementName);
If E1 <> Nil Then
Begin
E2 := E1.firstChild;
If (E2 <> Nil) And (E2 Is TDOMText)
Then Result := (E2 As TDOMText).data
Else Result := '';
End
Else Result := '';
End; // GetStringProperty
Function GetBooleanProperty(E: TDOMElement; ElementName: String): Boolean;
Var E1,E2: TDOMNode;
Begin
E1 := E.getFirstChildElement(ElementName);
If E1 <> Nil Then
Begin
E2 := E1.firstChild;
If (E2 <> Nil) And (E2 Is TDOMText)
Then Result := StrToBool(Trim((E2 As TDOMText).data))
Else Result := False;
End
Else Result := False;
End; // GetBooleanProperty
Function GetDoubleProperty(E: TDOMElement; ElementName: String): Double;
Var
E1,E2 : TDOMNode;
I : Double;
J : Integer;
Begin
E1 := E.getFirstChildElement(ElementName);
If E1 <> Nil Then
Begin
E2 := E1.firstChild;
If (E2 <> Nil) And (E2 Is TDOMText) Then
Begin
Val(Trim((E2 As TDOMText).data),I,J);
If J = 0 Then Result := I Else Result := 0;
End
Else Result := 0;
End
Else Result := 0;
End; // GetDoubleProperty
Function GetCoordProperty(E: TDOMElement; ElementName: String): Coord;
Var
E1,E2 : TDOMNode;
I : Coord;
J : Integer;
Begin
E1 := E.getFirstChildElement(ElementName);
If E1 <> Nil Then
Begin
E2 := E1.firstChild;
If (E2 <> Nil) And (E2 Is TDOMText) Then
Begin
Val(Trim((E2 As TDOMText).data),I,J);
If J = 0 Then Result := I Else Result := 0;
End
Else Result := 0;
End
Else Result := 0;
End; // GetCoordProperty
Function GetCoordProperty(E: TDOMElement): Coord;
Var
E2 : TDOMNode;
I : Coord;
J : Integer;
Begin
If E <> Nil Then
Begin
E2 := E.firstChild;
If (E2 <> Nil) And (E2 Is TDOMText) Then
Begin
Val(Trim((E2 As TDOMText).data),I,J);
If J = 0 Then Result := I Else Result := 0;
End
Else Result := 0;
End
Else Result := 0;
End; // GetCoordProperty
Function GetCoordPointProperty(E: TDOMElement; ElementName: String): CoordPoint;
Var
E1,E2 : TDOMNode;
I : Coord;
J,K : Integer;
P : CoordPoint;
St : String;
Begin
P.X := 0;
P.Y := 0;
E1 := E.getFirstChildElement(ElementName);
If E1 <> Nil Then
Begin
E2 := E1.firstChild;
If (E2 <> Nil) And (E2 Is TDOMText) Then
Begin
St := Trim((E2 As TDOMText).data);
K := Pos(',',St);
Val(Trim(Copy(St,1,K - 1)),I,J);
If J = 0 Then P.X := I;
Val(Trim(Copy(St,K + 1,Length(St))),I,J);
If J = 0 Then P.Y := I;
End;
End;
Result := P;
End; // GetCoordPointProperty
Function GetCoordPointProperty(E: TDOMElement): CoordPoint;
Var
E2 : TDOMNode;
I : Coord;
J,K : Integer;
P : CoordPoint;
St : String;
Begin
P.X := 0;
P.Y := 0;
If E <> Nil Then
Begin
E2 := E.firstChild;
If (E2 <> Nil) And (E2 Is TDOMText) Then
Begin
St := Trim((E2 As TDOMText).data);
K := Pos(',',St);
Val(Trim(Copy(St,1,K - 1)),I,J);
If J = 0 Then P.X := I;
Val(Trim(Copy(St,K + 1,Length(St))),I,J);
If J = 0 Then P.Y := I;
End;
End;
Result := P;
End; // GetCoordPointProperty
Procedure GetCoordPointsProperty(E: TDOMElement; ElementName: String; P: PCoordArray; Count: Integer);
Var
E1,E2 : TDOMNode;
I : Coord;
J,K,L,M : Integer;
St : String;
Start : Integer;
Function MyPos(Const Ch: Char; Const St: String; Start: Integer): Integer;
Begin
While (Start <= Length(St)) And (St[Start] <> Ch) Do Inc(Start);
If Start > Length(St) Then Result := 0 Else Result := Start;
End; // MyPos
Begin
E1 := E.getFirstChildElement(ElementName);
If E1 <> Nil Then
Begin
E2 := E1.firstChild;
If (E2 <> Nil) And (E2 Is TDOMText) Then
Begin
St := Trim((E2 As TDOMText).data);
Start := 1;
For L := 0 To Count - 1 Do
Begin
K := MyPos(',',St,Start);
If K > 0 Then
Begin
Val(Trim(Copy(St,Start,K - Start)),I,J);
If J = 0 Then P^[L].X := I;
Start := K + 1;
M := MyPos(':',St,Start);
If M > 0
Then Val(Trim(Copy(St,Start,M - Start)),I,J)
Else Val(Trim(Copy(St,Start,Length(St))),I,J);
If J = 0 Then P^[L].Y := I;
If M > 0 Then Start := M + 1 Else Start := Length(St) + 1;
End
Else Start := Length(St) + 1;
End; // For L
End;
End;
End; // GetCoordPointsProperty
Function GetCoordRectProperty(E: TDOMElement; ElementName: String): CoordRect;
Var
E1,E2 : TDOMNode;
I : Coord;
J,K : Integer;
P : CoordRect;
St : String;
Begin
P.Left := 0;
P.Top := 0;
P.Right := 0;
P.Bottom := 0;
E1 := E.getFirstChildElement(ElementName);
If E1 <> Nil Then
Begin
E2 := E1.firstChild;
If (E2 <> Nil) And (E2 Is TDOMText) Then
Begin
St := Trim((E2 As TDOMText).data);
K := Pos(',',St);
Val(Trim(Copy(St,1,K - 1)),I,J);
If J = 0 Then P.Left := I;
St := Trim(Copy(St,K + 1,Length(St)));
K := Pos(',',St);
Val(Trim(Copy(St,1,K - 1)),I,J);
If J = 0 Then P.Top := I;
St := Trim(Copy(St,K + 1,Length(St)));
K := Pos(',',St);
Val(Trim(Copy(St,1,K - 1)),I,J);
If J = 0 Then P.Right := I;
Val(Trim(Copy(St,K + 1,Length(St))),I,J);
If J = 0 Then P.Bottom := I;
End;
End;
Result := P;
End; // GetCoordRectProperty
function Compare(a, b: Coord): integer;
begin
if (a < b) then
Result := -1
else
if (a > b) then
Result := 1
else
Result := 0;
end;
function LeftPredicate(a1, a2: Pointer): integer;
begin
Result := Compare(DrawPrimitive(a1).Extent.Left, DrawPrimitive(a2).Extent.Left);
end;
function RightPredicate(a1, a2: Pointer): integer;
begin
Result := Compare(DrawPrimitive(a1).Extent.Right, DrawPrimitive(a2).Extent.Right);
end;
function HCenterPredicate(a1, a2: Pointer): integer;
begin
Result := Compare((DrawPrimitive(a1).Extent.Left + DrawPrimitive(a1).Extent.Right) / 2,
(DrawPrimitive(a2).Extent.Left + DrawPrimitive(a2).Extent.Right) / 2);
end;
function WidthPredicate(a1, a2: Pointer): integer;
begin
Result := Compare(DrawPrimitive(a1).Width, DrawPrimitive(a2).Width);
end;
function TopPredicate(a1, a2: Pointer): integer;
begin
Result := Compare(DrawPrimitive(a1).Extent.Top, DrawPrimitive(a2).Extent.Top);
end;
function BottomPredicate(a1, a2: Pointer): integer;
begin
Result := Compare(DrawPrimitive(a1).Extent.Bottom, DrawPrimitive(a2).Extent.Bottom);
end;
function VCenterPredicate(a1, a2: Pointer): integer;
begin
Result := Compare((DrawPrimitive(a1).Extent.Top + DrawPrimitive(a1).Extent.Bottom) / 2,
(DrawPrimitive(a2).Extent.Top + DrawPrimitive(a2).Extent.Bottom) / 2);
end;
function HeightPredicate(a1, a2: Pointer): integer;
begin
Result := Compare(DrawPrimitive(a1).Height, DrawPrimitive(a2).Height);
end;
function UpperLeftPredicate(a1, a2: Pointer): integer;
begin
Result := -Compare(DrawPrimitive(a1).Extent.Bottom, DrawPrimitive(a2).Extent.Bottom);
if (Result=0) then begin
Result := -Compare(DrawPrimitive(a1).Extent.Left, DrawPrimitive(a2).Extent.Left);
end;
end;
function UpperRightPredicate(a1, a2: Pointer): integer;
begin
Result := -Compare(DrawPrimitive(a1).Extent.Bottom, DrawPrimitive(a2).Extent.Bottom);
if (Result=0) then begin
Result := Compare(DrawPrimitive(a1).Extent.Left, DrawPrimitive(a2).Extent.Left);
end;
end;
function LowerLeftPredicate(a1, a2: Pointer): integer;
begin
Result := -UpperRightPredicate(a1,a2);
end;
function LowerRightPredicate(a1, a2: Pointer): integer;
begin
Result := -UpperLeftPredicate(a1,a2);
end;
function CenterPredicate(a1, a2: Pointer): integer;
var d1,d2:Coord;
begin
d1:=Distance(DrawPrimitive(a1).Extent.Left, DrawPrimitive(a1).Extent.Bottom, 0, 0);
d2:=Distance(DrawPrimitive(a2).Extent.Left, DrawPrimitive(a2).Extent.Bottom, 0, 0);
Result := -Compare(d1,d2);
end;
function EdgePredicate(a1, a2: Pointer): integer;
begin
Result := -CenterPredicate(a2,a2);
end;
function RandomPredicate(a1, a2: Pointer): integer;
const modulus = 5.0;
var d1,d2:Coord;
begin
d1:= DrawPrimitive(a1).Extent.Bottom;
d2:= DrawPrimitive(a2).Extent.Bottom;
// Remove the higher significant portion of the number so we just use the
// insignificant portion to sort by
d1 := d1 - int(d1/modulus)*modulus;
d2 := d2 - int(d2/modulus)*modulus;
Result := Compare(d1, d2);
end;
{-----------------------------------------------------------------}
function MapCollection.ReadOnlyPrevents:boolean;
begin
if ReadOnly then begin
MainForm.FlashReadOnlyProhibits;
Result:=true;
end
else
Result:=false;
end;
procedure MapCollection.RemovePreUndo;
var
i: integer;
begin
{ If they've undone to a certain point, we need to remove
the beginning of the undo array, since they can't redo
after the first non-undo action. }
if (CurrentUndo <> 0) then
begin
for i := 0 to CurrentUndo - 1 do
begin
// MainForm.DOMImpl.freeDocument(UndoArray[I].Doc);
// MainForm.DOMImpl.freeUnusedASModels;
// UndoArray[I].Doc := Nil;
UndoArray[i].Stream.Free;
UndoArray[i].Stream := nil;
UndoArray[i].Name := '';
end;
{ Now that we've freed the beginning, slide the rest back down }
for i := CurrentUndo to High(UndoArray) do
UndoArray[i - CurrentUndo] := UndoArray[i];
{ And clear out all the left-over slots }
for i := High(UndoArray) - CurrentUndo to High(UndoArray) do
begin
UndoArray[i].Stream := nil;
// UndoArray[I].Doc := Nil;
UndoArray[i].Name := '';
end;
CurrentUndo := 0;
end;
end;
procedure MapCollection.SetUndoPoint(name: string; compress: boolean);
var
i: integer;
begin
// If we're compressing undo records together, and we are using at least 1 level
// of undo, and it is an undo for the same item, nothing to do--quit.
if compress and (UndoMax > 0) and (UndoArray[CurrentUndo].Name = name) then exit;
{ If undos aren't disabled }
if (UndoMax > 0) then
begin
RemovePreUndo;
{ Now free the oldest undo record, and shuffle the rest of the array down }
UndoArray[High(UndoArray)].Stream.Free;
UndoArray[High(UndoArray)].Stream := nil;
UndoArray[High(UndoArray)].Name := '';
for i := High(UndoArray) downto Low(UndoArray) + 1 do
UndoArray[i] := UndoArray[i - 1];
{ Create a memory stream to write into as the undo record}
try
UndoArray[0].Stream := TMemoryStream.Create;
Write(UndoArray[0].Stream, true, True, True,
[CO_CHUNK, CM_CHUNK, OV_CHUNK, VW_CHUNK, OB_CHUNK, UNDO_OPERATION]);
UndoArray[0].Name := name;
UndoArray[0].modflags := modflags;
except
{ Not enough memory for an undo record !}
UndoArray[0].Name := res_mapobj_undo_fail;
UndoArray[0].modflags := [];
end;
end;
end;
procedure MapCollection.RecreateMapState(number: integer);
var
i: integer;
begin
Clear;
UndoArray[number].Stream.Position := 0;
Read(UndoArray[number].Stream, false, True, True);
modflags := UndoArray[number].modflags;
// Backwards synchronize; use the overlay checklist box to
// restore the current view's active and visible overlays.
with MainForm.OverlayList do
begin
CurrentView.ActiveOverlays := [];
CurrentView.VisibleOverlays := [];
for i := 0 to Items.Count - 1 do
begin
case State[i] of
cbChecked:
begin
CurrentView.ActiveOverlays := CurrentView.ActiveOverlays + [i];
CurrentView.VisibleOverlays := CurrentView.VisibleOverlays + [i];
end;
cbGrayed:
begin
CurrentView.VisibleOverlays := CurrentView.VisibleOverlays + [i];
end;
cbUnchecked: