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ScintEdit.pas
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unit ScintEdit;
{
Inno Setup
Copyright (C) 1997-2024 Jordan Russell
Portions by Martijn Laan
For conditions of distribution and use, see LICENSE.TXT.
TScintEdit component: a VCL wrapper for Scintilla
}
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Generics.Collections, ScintInt;
const
StyleNumbers = 32; { The syntax highlighting can use up to 32 styles }
StyleNumberBits = 5; { 5 bits are needed to store 32 values }
StyleNumberMask = StyleNumbers-1; { To get the 5 bits from a byte it needs to be AND-ed with $1F = 31 }
StyleNumberUnusedBits = 8-StyleNumberBits; { 3 bits of a byte are unused }
type
TScintChangeHistory = (schDisabled, schMarkers, schIndicators);
TScintCommand = type NativeInt;
TScintEditAutoCompleteSelectionEvent = TNotifyEvent;
TScintEditCallTipArrowClick = procedure(Sender: TObject; const Up: Boolean) of object;
TScintEditChangeInfo = record
Inserting: Boolean;
StartPos, Length, LinesDelta: Integer;
end;
TScintEditChangeEvent = procedure(Sender: TObject;
const Info: TScintEditChangeInfo) of object;
TScintEditCharAddedEvent = procedure(Sender: TObject; Ch: AnsiChar) of object;
TScintEditDropFilesEvent = procedure(Sender: TObject; X, Y: Integer;
AFiles: TStrings) of object;
TScintHintInfo = Controls.THintInfo;
TScintEditHintShowEvent = procedure(Sender: TObject;
var Info: TScintHintInfo) of object;
TScintEditMarginClickEvent = procedure(Sender: TObject; MarginNumber: Integer;
Line: Integer) of object;
TScintEditUpdate = (suContent, suSelection, suVScroll, suHScroll);
TScintEditUpdates = set of TScintEditUpdate;
TScintEditUpdateUIEvent = procedure(Sender: TObject; Updated: TScintEditUpdates) of object;
TScintFindOption = (sfoMatchCase, sfoWholeWord, sfoRegEx);
TScintFindOptions = set of TScintFindOption;
TScintFoldFlag = (sffLineBeforeExpanded, sffLineBeforeContracted,
sffLineAfterExpanded, sffLineAfterContracted, sffLevelNumbers, sffLineState);
TScintFoldFlags = set of TScintFoldFlag;
TScintIndentationGuides = (sigNone, sigReal, sigLookForward, sigLookBoth);
TScintKeyCode = type Word;
TScintKeyDefinition = type Cardinal;
TScintReplaceMode = (srmNormal, srmMinimal, srmRegEx);
TScintStyleByteIndicatorNumber = 0..1; { Could be increased to 0..StyleNumberUnusedBits-1 }
TScintStyleByteIndicatorNumbers = set of TScintStyleByteIndicatorNumber;
TScintIndicatorNumber = INDICATOR_CONTAINER..INDICATOR_MAX;
TScintLineEndings = (sleCRLF, sleCR, sleLF);
TScintLineState = type Integer;
TScintMarkerNumber = 0..31;
TScintMarkerNumbers = set of TScintMarkerNumber;
TScintRange = record
StartPos, EndPos: Integer;
constructor Create(const AStartPos, AEndPos: Integer);
function Empty: Boolean;
function Overlaps(const ARange: TScintRange): Boolean;
function Within(const ARange: TScintRange): Boolean;
end;
TScintRangeList = class(TList<TScintRange>)
function Overlaps(const ARange: TScintRange;
var AOverlappingRange: TScintRange): Boolean;
end;
TScintCaretAndAnchor = record
CaretPos, AnchorPos: Integer;
constructor Create(const ACaretPos, AAnchorPos: Integer);
function Range: TScintRange;
end;
TScintCaretAndAnchorList = class(TList<TScintCaretAndAnchor>);
TScintRawCharSet = set of AnsiChar;
TScintRawString = type RawByteString;
TScintRectangle = record
Left, Top, Right, Bottom: Integer;
end;
TScintSelectionMode = (ssmStream, ssmRectangular, ssmLines, ssmThinRectangular);
TScintStyleNumber = 0..StyleNumbers-1;
TScintVirtualSpaceOption = (svsRectangularSelection, svsUserAccessible,
svsNoWrapLineStart);
TScintVirtualSpaceOptions = set of TScintVirtualSpaceOption;
PScintRangeToFormat = ^TScintRangeToFormat;
TScintRangeToFormat = record
hdc, hdcTarget: UINT_PTR;
rc, rcPage: TScintRectangle;
chrg: TScintRange;
end;
TScintEditStrings = class;
TScintCustomStyler = class;
EScintEditError = class(Exception);
TScintEdit = class(TWinControl)
private
FAcceptDroppedFiles: Boolean;
FAutoCompleteFontName: String;
FAutoCompleteFontSize: Integer;
FAutoCompleteStyle: Integer;
FChangeHistory: TScintChangeHistory;
FCodePage: Integer;
FDirectPtr: Pointer;
FDirectStatusFunction: SciFnDirectStatus;
FEffectiveCodePage: Integer;
FEffectiveCodePageDBCS: Boolean;
FFillSelectionToEdge: Boolean;
FFoldLevelNumbersOrLineState: Boolean;
FForceModified: Boolean;
FIndentationGuides: TScintIndentationGuides;
FLeadBytes: TScintRawCharSet;
FLineNumbers: Boolean;
FLines: TScintEditStrings;
FOnAutoCompleteSelection: TScintEditAutoCompleteSelectionEvent;
FOnCallTipArrowClick: TScintEditCallTipArrowClick;
FOnChange: TScintEditChangeEvent;
FOnCharAdded: TScintEditCharAddedEvent;
FOnDropFiles: TScintEditDropFilesEvent;
FOnHintShow: TScintEditHintShowEvent;
FOnMarginClick: TScintEditMarginClickEvent;
FOnMarginRightClick: TScintEditMarginClickEvent;
FOnModifiedChange: TNotifyEvent;
FOnUpdateUI: TScintEditUpdateUIEvent;
FOnZoom: TNotifyEvent;
FReportCaretPositionToStyler: Boolean;
FStyler: TScintCustomStyler;
FTabWidth: Integer;
FUseStyleAttributes: Boolean;
FUseTabCharacter: Boolean;
FVirtualSpaceOptions: TScintVirtualSpaceOptions;
FWordChars: AnsiString;
FWordCharsAsSet: TSysCharSet;
FWordWrap: Boolean;
procedure ApplyOptions;
procedure ForwardMessage(const Message: TMessage);
function GetAutoCompleteActive: Boolean;
function GetCallTipActive: Boolean;
function GetCaretColumn: Integer;
function GetCaretColumnExpandedForTabs: Integer;
function GetCaretLine: Integer;
function GetCaretLineText: String;
function GetCaretPosition: Integer;
function GetCaretPositionInLine: Integer;
function GetCaretVirtualSpace: Integer;
function GetInsertMode: Boolean;
function GetLineEndings: TScintLineEndings;
function GetLineEndingString: TScintRawString;
function GetLineHeight: Integer;
function GetLinesInWindow: Integer;
function GetMainSelText: String;
function GetModified: Boolean;
function GetRawCaretLineText: TScintRawString;
function GetRawMainSelText: TScintRawString;
function GetRawSelText: TScintRawString;
function GetRawText: TScintRawString;
function GetReadOnly: Boolean;
class function GetReplaceTargetMessage(const ReplaceMode: TScintReplaceMode): Cardinal;
class function GetSearchFlags(const Options: TScintFindOptions): Integer;
function GetSelection: TScintRange;
function GetSelectionAnchorPosition(Selection: Integer): Integer;
function GetSelectionAnchorVirtualSpace(Selection: Integer): Integer;
function GetSelectionCaretPosition(Selection: Integer): Integer;
function GetSelectionCaretVirtualSpace(Selection: Integer): Integer;
function GetSelectionEndPosition(Selection: Integer): Integer;
function GetSelectionCount: Integer;
function GetSelectionMode: TScintSelectionMode;
function GetSelectionStartPosition(Selection: Integer): Integer;
function GetSelText: String;
function GetTopLine: Integer;
function GetZoom: Integer;
procedure SetAcceptDroppedFiles(const Value: Boolean);
procedure SetAutoCompleteFontName(const Value: String);
procedure SetAutoCompleteFontSize(const Value: Integer);
procedure SetCodePage(const Value: Integer);
procedure SetCaretColumn(const Value: Integer);
procedure SetCaretLine(const Value: Integer);
procedure SetCaretPosition(const Value: Integer);
procedure SetCaretPositionWithSelectFromAnchor(const Value: Integer);
procedure SetCaretVirtualSpace(const Value: Integer);
procedure SetChangeHistory(const Value: TScintChangeHistory);
procedure SetFillSelectionToEdge(const Value: Boolean);
procedure SetFoldFlags(const Value: TScintFoldFlags);
procedure SetIndentationGuides(const Value: TScintIndentationGuides);
procedure SetLineNumbers(const Value: Boolean);
procedure SetMainSelection(const Value: Integer);
procedure SetMainSelText(const Value: String);
procedure SetRawMainSelText(const Value: TScintRawString);
procedure SetRawSelText(const Value: TScintRawString);
procedure SetRawText(const Value: TScintRawString);
procedure SetReadOnly(const Value: Boolean);
procedure SetSelection(const Value: TScintRange);
procedure SetSelectionAnchorPosition(Selection: Integer; const Value: Integer);
procedure SetSelectionAnchorVirtualSpace(Selection: Integer;
const Value: Integer);
procedure SetSelectionCaretPosition(Selection: Integer; const Value: Integer);
procedure SetSelectionCaretVirtualSpace(Selection: Integer;
const Value: Integer);
procedure SetSelectionMode(const Value: TScintSelectionMode);
procedure SetSelText(const Value: String);
procedure SetStyler(const Value: TScintCustomStyler);
procedure SetTabWidth(const Value: Integer);
procedure SetTopLine(const Value: Integer);
procedure SetUseStyleAttributes(const Value: Boolean);
procedure SetUseTabCharacter(const Value: Boolean);
procedure SetVirtualSpaceOptions(const Value: TScintVirtualSpaceOptions);
procedure SetWordWrap(const Value: Boolean);
procedure SetZoom(const Value: Integer);
procedure UpdateCodePage;
procedure UpdateLineNumbersWidth;
procedure CMColorChanged(var Message: TMessage); message CM_COLORCHANGED;
procedure CMFontChanged(var Message: TMessage); message CM_FONTCHANGED;
procedure CMHintShow(var Message: TCMHintShow); message CM_HINTSHOW;
procedure CMSysColorChange(var Message: TMessage); message CM_SYSCOLORCHANGE;
procedure CNNotify(var Message: TWMNotify); message CN_NOTIFY;
procedure WMDestroy(var Message: TWMDestroy); message WM_DESTROY;
procedure WMDropFiles(var Message: TWMDropFiles); message WM_DROPFILES;
procedure WMEraseBkgnd(var Message: TMessage); message WM_ERASEBKGND;
procedure WMGetDlgCode(var Message: TWMGetDlgCode); message WM_GETDLGCODE;
procedure WMMouseWheel(var Message: TMessage); message WM_MOUSEWHEEL;
protected
procedure Change(const AInserting: Boolean; const AStartPos, ALength,
ALinesDelta: Integer); virtual;
procedure CheckPosRange(const StartPos, EndPos: Integer);
procedure CreateParams(var Params: TCreateParams); override;
procedure CreateWnd; override;
class function GetErrorException(const S: String): EScintEditError;
class procedure Error(const S: String); overload;
class procedure ErrorFmt(const S: String; const Args: array of const);
function GetMainSelection: Integer;
function GetTarget: TScintRange;
procedure InitRawString(var S: TScintRawString; const Len: Integer);
procedure Notification(AComponent: TComponent; Operation: TOperation); override;
procedure Notify(const N: TSCNotification); virtual;
procedure SetTarget(const StartPos, EndPos: Integer);
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure AddMarker(const Line: Integer; const Marker: TScintMarkerNumber);
procedure AddSelection(const CaretPos, AnchorPos: Integer);
procedure AssignCmdKey(const Key: AnsiChar; const Shift: TShiftState;
const Command: TScintCommand); overload;
procedure AssignCmdKey(const KeyCode: TScintKeyCode; const Shift: TShiftState;
const Command: TScintCommand); overload;
procedure BeginUndoAction;
function Call(Msg: Cardinal; WParam: Longint; LParam: Longint): Longint; overload;
function Call(Msg: Cardinal; WParam: Longint; LParam: Longint; out WarnStatus: Integer): Longint; overload;
function Call(Msg: Cardinal; WParam: Longint; const LParamStr: TScintRawString): Longint; overload;
function Call(Msg: Cardinal; WParam: Longint; const LParamStr: TScintRawString; out WarnStatus: Integer): Longint; overload;
procedure CancelAutoComplete;
procedure CancelAutoCompleteAndCallTip;
procedure CancelCallTip;
function CanPaste: Boolean;
function CanRedo: Boolean;
function CanUndo: Boolean;
procedure ChooseCaretX;
procedure ClearAll;
procedure ClearCmdKey(const Key: AnsiChar; const Shift: TShiftState); overload;
procedure ClearCmdKey(const KeyCode: TScintKeyCode; const Shift: TShiftState); overload;
procedure ClearIndicators(const IndicatorNumber: TScintIndicatorNumber);
procedure ClearSelection;
procedure ClearUndo(const ClearChangeHistory: Boolean = True);
function ConvertRawStringToString(const S: TScintRawString): String;
function ConvertPCharToRawString(const Text: PChar;
const TextLen: Integer): TScintRawString;
function ConvertStringToRawString(const S: String): TScintRawString;
procedure CopyToClipboard;
procedure CutToClipboard;
procedure DeleteAllMarkersOnLine(const Line: Integer);
procedure DeleteMarker(const Line: Integer; const Marker: TScintMarkerNumber);
procedure DPIChanged(const Message: TMessage);
procedure EndUndoAction;
procedure EnsureLineVisible(const Line: Integer);
function FindRawText(const StartPos, EndPos: Integer; const S: TScintRawString;
const Options: TScintFindOptions; out MatchRange: TScintRange): Boolean;
function FindText(const StartPos, EndPos: Integer; const S: String;
const Options: TScintFindOptions; out MatchRange: TScintRange): Boolean;
procedure FoldLine(const Line: Integer; const Fold: Boolean);
function FormatRange(const Draw: Boolean;
const RangeToFormat: PScintRangeToFormat): Integer;
procedure ForceModifiedState;
function GetByteAtPosition(const Pos: Integer): AnsiChar;
function GetCharacterCount(const StartPos, EndPos: Integer): Integer;
function GetColumnFromPosition(const Pos: Integer): Integer;
function GetDefaultWordChars: AnsiString;
function GetDocLineFromVisibleLine(const VisibleLine: Integer): Integer;
function GetIndicatorAtPosition(const IndicatorNumber: TScintIndicatorNumber;
const Pos: Integer): Boolean;
function GetLineEndPosition(const Line: Integer): Integer;
function GetLineFromPosition(const Pos: Integer): Integer;
function GetLineIndentation(const Line: Integer): Integer;
function GetLineIndentPosition(const Line: Integer): Integer;
function GetMarkers(const Line: Integer): TScintMarkerNumbers;
function GetPointFromPosition(const Pos: Integer): TPoint;
function GetPositionAfter(const Pos: Integer): Integer;
function GetPositionBefore(const Pos: Integer): Integer;
function GetPositionFromLine(const Line: Integer): Integer;
function GetPositionFromLineColumn(const Line, Column: Integer): Integer;
function GetPositionFromLineExpandedColumn(const Line, ExpandedColumn: Integer): Integer;
function GetPositionFromPoint(const P: TPoint;
const CharPosition, CloseOnly: Boolean): Integer;
function GetPositionOfMatchingBrace(const Pos: Integer): Integer;
function GetPositionRelative(const Pos, CharacterCount: Integer): Integer;
function GetRawTextLength: Integer;
function GetRawTextRange(const StartPos, EndPos: Integer): TScintRawString;
procedure GetSelections(const RangeList: TScintRangeList); overload;
procedure GetSelections(const CaretAndAnchorList: TScintCaretAndAnchorList); overload;
procedure GetSelections(const CaretAndAnchorList, VirtualSpacesList: TScintCaretAndAnchorList); overload;
function GetStyleAtPosition(const Pos: Integer): TScintStyleNumber;
function GetTextRange(const StartPos, EndPos: Integer): String;
function GetVisibleLineFromDocLine(const DocLine: Integer): Integer;
function GetWordEndPosition(const Pos: Integer; const OnlyWordChars: Boolean): Integer;
function GetWordStartPosition(const Pos: Integer; const OnlyWordChars: Boolean): Integer;
function IsPositionInViewVertically(const Pos: Integer): Boolean;
class function KeyCodeAndShiftToKeyDefinition(const KeyCode: TScintKeyCode;
Shift: TShiftState): TScintKeyDefinition;
function MainSelTextEquals(const S: String;
const Options: TScintFindOptions): Boolean;
class function KeyToKeyCode(const Key: AnsiChar): TScintKeyCode;
procedure PasteFromClipboard;
function RawMainSelTextEquals(const S: TScintRawString;
const Options: TScintFindOptions): Boolean;
class function RawStringIsBlank(const S: TScintRawString): Boolean;
procedure Redo;
procedure RemoveAdditionalSelections;
function ReplaceMainSelText(const S: String;
const ReplaceMode: TScintReplaceMode = srmNormal): TScintRange;
function ReplaceRawMainSelText(const S: TScintRawString;
const ReplaceMode: TScintReplaceMode = srmNormal): TScintRange;
function ReplaceRawTextRange(const StartPos, EndPos: Integer;
const S: TScintRawString; const ReplaceMode: TScintReplaceMode = srmNormal): TScintRange;
function ReplaceTextRange(const StartPos, EndPos: Integer; const S: String;
const ReplaceMode: TScintReplaceMode = srmNormal): TScintRange;
procedure RestyleLine(const Line: Integer);
procedure ScrollCaretIntoView;
procedure SelectAll;
procedure SelectAllOccurrences(const Options: TScintFindOptions);
procedure SelectAndEnsureVisible(const Range: TScintRange);
procedure SelectNextOccurrence(const Options: TScintFindOptions);
function SelEmpty: Boolean;
function SelNotEmpty(out Sel: TScintRange): Boolean;
procedure SetAutoCompleteFillupChars(const FillupChars: AnsiString);
procedure SetAutoCompleteSeparators(const Separator, TypeSeparator: AnsiChar);
procedure SetAutoCompleteSelectedItem(const S: TScintRawString);
procedure SetAutoCompleteStopChars(const StopChars: AnsiString);
procedure SetBraceBadHighlighting(const Pos: Integer);
procedure SetBraceHighlighting(const Pos1, Pos2: Integer);
procedure SetCursorID(const CursorID: Integer);
procedure SetCallTipHighlight(HighlightStart, HighlightEnd: Integer);
procedure SetDefaultWordChars;
procedure SetEmptySelection;
procedure SetEmptySelections;
procedure SetIndicators(const StartPos, EndPos: Integer;
const IndicatorNumber: TScintIndicatorNumber; const Value: Boolean);
procedure SetLineIndentation(const Line, Indentation: Integer);
procedure SetSavePoint;
procedure SetSingleSelection(const CaretPos, AnchorPos: Integer);
procedure SettingChange(const Message: TMessage);
procedure SetWordChars(const S: AnsiString);
procedure ShowAutoComplete(const CharsEntered: Integer; const WordList: AnsiString);
procedure ShowCallTip(const Pos: Integer; const Definition: AnsiString);
procedure StyleNeeded(const EndPos: Integer);
procedure SysColorChange(const Message: TMessage);
function TestRegularExpression(const S: String): Boolean;
function TestRawRegularExpression(const S: TScintRawString): Boolean;
procedure Undo;
procedure UpdateStyleAttributes;
function WordAtCaret: String;
function WordAtCaretRange: TScintRange;
procedure ZoomIn;
procedure ZoomOut;
property AutoCompleteActive: Boolean read GetAutoCompleteActive;
property CallTipActive: Boolean read GetCallTipActive;
property CaretColumn: Integer read GetCaretColumn write SetCaretColumn;
property CaretColumnExpandedForTabs: Integer read GetCaretColumnExpandedForTabs;
property CaretLine: Integer read GetCaretLine write SetCaretLine;
property CaretLineText: String read GetCaretLineText;
property CaretPosition: Integer read GetCaretPosition write SetCaretPosition;
property CaretPositionInLine: Integer read GetCaretPositionInLine;
property CaretPositionWithSelectFromAnchor: Integer write SetCaretPositionWithSelectFromAnchor;
property CaretVirtualSpace: Integer read GetCaretVirtualSpace write SetCaretVirtualSpace;
property EffectiveCodePage: Integer read FEffectiveCodePage;
property FoldFlags: TScintFoldFlags write SetFoldFlags;
property InsertMode: Boolean read GetInsertMode;
property LineEndings: TScintLineEndings read GetLineEndings;
property LineEndingString: TScintRawString read GetLineEndingString;
property LineHeight: Integer read GetLineHeight;
property Lines: TScintEditStrings read FLines;
property LinesInWindow: Integer read GetLinesInWindow;
property MainSelection: Integer read GetMainSelection write SetMainSelection;
property MainSelText: String read GetMainSelText write SetMainSelText;
property Modified: Boolean read GetModified;
property RawCaretLineText: TScintRawString read GetRawCaretLineText;
property RawMainSelText: TScintRawString read GetRawMainSelText write SetRawMainSelText;
property RawSelText: TScintRawString read GetRawSelText write SetRawSelText;
property RawText: TScintRawString read GetRawText write SetRawText;
property RawTextLength: Integer read GetRawTextLength;
property ReadOnly: Boolean read GetReadOnly write SetReadOnly;
property Selection: TScintRange read GetSelection write SetSelection;
property SelectionAnchorPosition[Selection: Integer]: Integer read GetSelectionAnchorPosition write SetSelectionAnchorPosition;
property SelectionAnchorVirtualSpace[Selection: Integer]: Integer read GetSelectionAnchorVirtualSpace write SetSelectionAnchorVirtualSpace;
property SelectionCaretPosition[Selection: Integer]: Integer read GetSelectionCaretPosition write SetSelectionCaretPosition;
property SelectionCaretVirtualSpace[Selection: Integer]: Integer read GetSelectionCaretVirtualSpace write SetSelectionCaretVirtualSpace;
property SelectionCount: Integer read GetSelectionCount;
property SelectionEndPosition[Selection: Integer]: Integer read GetSelectionEndPosition;
property SelectionMode: TScintSelectionMode read GetSelectionMode write SetSelectionMode;
property SelectionStartPosition[Selection: Integer]: Integer read GetSelectionStartPosition;
property SelText: String read GetSelText write SetSelText;
property Styler: TScintCustomStyler read FStyler write SetStyler;
property Target: TScintRange read GetTarget;
property TopLine: Integer read GetTopLine write SetTopLine;
property WordChars: AnsiString read FWordChars;
property WordCharsAsSet: TSysCharSet read FWordCharsAsSet;
published
property AcceptDroppedFiles: Boolean read FAcceptDroppedFiles write SetAcceptDroppedFiles
default False;
property AutoCompleteFontName: String read FAutoCompleteFontName
write SetAutoCompleteFontName;
property AutoCompleteFontSize: Integer read FAutoCompleteFontSize
write SetAutoCompleteFontSize default 0;
property ChangeHistory: TScintChangeHistory read FChangeHistory write SetChangeHistory default schDisabled;
property CodePage: Integer read FCodePage write SetCodePage default CP_UTF8;
property Color;
property FillSelectionToEdge: Boolean read FFillSelectionToEdge write SetFillSelectionToEdge
default False;
property Font;
property IndentationGuides: TScintIndentationGuides read FIndentationGuides
write SetIndentationGuides default sigNone;
property LineNumbers: Boolean read FLineNumbers write SetLineNumbers default False;
property ParentFont;
property PopupMenu;
property ReportCaretPositionToStyler: Boolean read FReportCaretPositionToStyler
write FReportCaretPositionToStyler;
property TabStop default True;
property TabWidth: Integer read FTabWidth write SetTabWidth default 8;
property UseStyleAttributes: Boolean read FUseStyleAttributes write SetUseStyleAttributes
default True;
property UseTabCharacter: Boolean read FUseTabCharacter write SetUseTabCharacter
default True;
property VirtualSpaceOptions: TScintVirtualSpaceOptions read FVirtualSpaceOptions
write SetVirtualSpaceOptions default [];
property WordWrap: Boolean read FWordWrap write SetWordWrap default False;
property Zoom: Integer read GetZoom write SetZoom default 0;
property OnAutoCompleteSelection: TScintEditAutoCompleteSelectionEvent read FOnAutoCompleteSelection write FOnAutoCompleteSelection;
property OnCallTipArrowClick: TScintEditCallTipArrowClick read FOnCallTipArrowClick write FOnCallTipArrowClick;
property OnChange: TScintEditChangeEvent read FOnChange write FOnChange;
property OnCharAdded: TScintEditCharAddedEvent read FOnCharAdded write FOnCharAdded;
property OnDropFiles: TScintEditDropFilesEvent read FOnDropFiles write FOnDropFiles;
property OnHintShow: TScintEditHintShowEvent read FOnHintShow write FOnHintShow;
property OnKeyDown;
property OnKeyPress;
property OnKeyUp;
property OnMarginClick: TScintEditMarginClickEvent read FOnMarginClick write FOnMarginClick;
property OnMarginRightClick: TScintEditMarginClickEvent read FOnMarginRightClick write FOnMarginRightClick;
property OnModifiedChange: TNotifyEvent read FOnModifiedChange write FOnModifiedChange;
property OnMouseDown;
property OnMouseMove;
property OnMouseUp;
property OnUpdateUI: TScintEditUpdateUIEvent read FOnUpdateUI write FOnUpdateUI;
property OnZoom: TNotifyEvent read FOnZoom write FOnZoom;
end;
TScintEditStrings = class(TStrings)
private
FEdit: TScintEdit;
function GetLineEndingLength(const Index: Integer): Integer;
function GetRawLine(Index: Integer): TScintRawString;
function GetRawLineWithEnding(Index: Integer): TScintRawString;
function GetRawLineLength(Index: Integer): Integer;
function GetRawLineLengthWithEnding(Index: Integer): Integer;
function GetState(Index: Integer): TScintLineState;
procedure PutRawLine(Index: Integer; const S: TScintRawString);
protected
procedure CheckIndexRange(const Index: Integer);
procedure CheckIndexRangePlusOne(const Index: Integer);
function Get(Index: Integer): String; override;
function GetCount: Integer; override;
function GetTextStr: String; override;
procedure Put(Index: Integer; const S: String); override;
procedure SetTextStr(const Value: String); override;
public
procedure Clear; override;
procedure Delete(Index: Integer); override;
procedure Insert(Index: Integer; const S: String); override;
procedure InsertRawLine(Index: Integer; const S: TScintRawString);
procedure SetText(Text: PChar); override;
property RawLineLengths[Index: Integer]: Integer read GetRawLineLength;
property RawLineLengthsWithEnding[Index: Integer]: Integer read GetRawLineLengthWithEnding;
property RawLines[Index: Integer]: TScintRawString read GetRawLine write PutRawLine;
property RawLinesWithEnding[Index: Integer]: TScintRawString read GetRawLineWithEnding;
property State[Index: Integer]: TScintLineState read GetState;
end;
TScintStyleAttributes = record
FontName: String;
FontSize: Integer;
FontStyle: TFontStyles;
FontCharset: TFontCharset;
ForeColor: TColor;
BackColor: TColor;
end;
TScintCustomStyler = class(TComponent)
private
FCaretIndex: Integer;
FCurIndex: Integer;
FLineState: TScintLineState;
FStyleStartIndex: Integer;
FStyleStr: AnsiString;
FText: TScintRawString;
FTextLen: Integer;
function GetCurChar: AnsiChar;
function GetEndOfLine: Boolean;
protected
procedure ApplyStyleByteIndicators(const Indicators: TScintStyleByteIndicatorNumbers;
StartIndex, EndIndex: Integer);
procedure ApplyStyle(const Style: TScintStyleNumber;
StartIndex, EndIndex: Integer);
procedure CommitStyle(const Style: TScintStyleNumber);
function ConsumeAllRemaining: Boolean;
function ConsumeChar(const C: AnsiChar): Boolean;
function ConsumeCharIn(const Chars: TScintRawCharSet): Boolean;
function ConsumeChars(const Chars: TScintRawCharSet): Boolean;
function ConsumeCharsNot(const Chars: TScintRawCharSet): Boolean;
function ConsumeString(const Chars: TScintRawCharSet): TScintRawString;
function CurCharIn(const Chars: TScintRawCharSet): Boolean;
function CurCharIs(const C: AnsiChar): Boolean;
procedure GetFoldLevel(const LineState, PreviousLineState: TScintLineState;
var Level: Integer; var Header, EnableHeaderOnPrevious: Boolean); virtual; abstract;
procedure GetStyleAttributes(const Style: Integer;
var Attributes: TScintStyleAttributes); virtual; abstract;
function LineTextSpans(const S: TScintRawString): Boolean; virtual;
function NextCharIs(const C: AnsiChar): Boolean;
function PreviousCharIn(const Chars: TScintRawCharSet): Boolean;
procedure ResetCurIndexTo(Index: Integer);
procedure ReplaceText(StartIndex, EndIndex: Integer; const C: AnsiChar);
procedure StyleNeeded; virtual; abstract;
property CaretIndex: Integer read FCaretIndex;
property CurChar: AnsiChar read GetCurChar;
property CurIndex: Integer read FCurIndex;
property EndOfLine: Boolean read GetEndOfLine;
property LineState: TScintLineState read FLineState write FLineState;
property StyleStartIndex: Integer read FStyleStartIndex;
property Text: TScintRawString read FText;
property TextLength: Integer read FTextLen;
end;
TScintPixmap = class
private
type
TPixmap = array of AnsiString;
class var
ColorCodes: String;
var
FPixmap: TPixmap;
class constructor Create;
function GetPixmap: Pointer;
public
procedure InitializeFromBitmap(const ABitmap: TBitmap; const TransparentColor: TColorRef);
property Pixmap: Pointer read GetPixmap;
end;
implementation
uses
ShellAPI, RTLConsts, UITypes, GraphUtil;
{ TScintEdit }
const
AUTOCSETSEPARATOR = #9;
constructor TScintEdit.Create(AOwner: TComponent);
begin
inherited;
FCodePage := CP_UTF8;
FLines := TScintEditStrings.Create;
FLines.FEdit := Self;
FTabWidth := 8;
FUseStyleAttributes := True;
FUseTabCharacter := True;
SetBounds(0, 0, 257, 193);
ParentColor := False;
TabStop := True;
end;
destructor TScintEdit.Destroy;
begin
SetStyler(nil);
FLines.Free;
FLines := nil;
inherited;
end;
procedure TScintEdit.AddMarker(const Line: Integer;
const Marker: TScintMarkerNumber);
begin
FLines.CheckIndexRange(Line);
Call(SCI_MARKERADD, Line, Marker);
end;
procedure TScintEdit.AddSelection(const CaretPos, AnchorPos: Integer);
{ Adds a new selection as the main selection retaining all other selections as
additional selections without scrolling the caret into view. The first
selection should be added with SetSingleSelection. }
begin
Call(SCI_ADDSELECTION, CaretPos, AnchorPos);
end;
procedure TScintEdit.ApplyOptions;
const
IndentationGuides: array [TScintIndentationGuides] of Integer = (SC_IV_NONE, SC_IV_REAL,
SC_IV_LOOKFORWARD, SC_IV_LOOKBOTH);
var
Flags: Integer;
begin
if not HandleAllocated then
Exit;
Call(SCI_SETSELEOLFILLED, Ord(FFillSelectionToEdge), 0);
Call(SCI_SETTABWIDTH, FTabWidth, 0);
Call(SCI_SETUSETABS, Ord(FUseTabCharacter), 0);
Flags := 0;
if svsRectangularSelection in VirtualSpaceOptions then
Flags := Flags or SCVS_RECTANGULARSELECTION;
if svsUserAccessible in VirtualSpaceOptions then
Flags := Flags or SCVS_USERACCESSIBLE;
if svsNoWrapLineStart in VirtualSpaceOptions then
Flags := Flags or SCVS_NOWRAPLINESTART;
Call(SCI_SETVIRTUALSPACEOPTIONS, Flags, 0);
Call(SCI_SETWRAPMODE, Ord(FWordWrap), 0);
Call(SCI_SETINDENTATIONGUIDES, IndentationGuides[FIndentationGuides], 0);
{ If FChangeHistory is not schDisabled then next call to ClearUndo will enable
change history and else we should disable it now }
if FChangeHistory = schDisabled then
Call(SCI_SETCHANGEHISTORY, SC_CHANGE_HISTORY_DISABLED, 0);
end;
procedure TScintEdit.AssignCmdKey(const Key: AnsiChar; const Shift: TShiftState;
const Command: TScintCommand);
begin
AssignCmdKey(KeyToKeyCode(Key), Shift, Command);
end;
procedure TScintEdit.AssignCmdKey(const KeyCode: TScintKeyCode;
const Shift: TShiftState; const Command: TScintCommand);
begin
Call(SCI_ASSIGNCMDKEY, KeyCodeAndShiftToKeyDefinition(KeyCode, Shift), Command);
end;
procedure TScintEdit.BeginUndoAction;
begin
Call(SCI_BEGINUNDOACTION, 0, 0);
end;
function TScintEdit.Call(Msg: Cardinal; WParam: Longint; LParam: Longint): Longint;
begin
var Dummy: Integer;
Result := Call(Msg, WParam, LParam, Dummy);
end;
function TScintEdit.Call(Msg: Cardinal; WParam: Longint; LParam: Longint;
out WarnStatus: Integer): Longint;
begin
HandleNeeded;
if FDirectPtr = nil then
Error('Call: FDirectPtr is nil');
if not Assigned(FDirectStatusFunction) then
Error('Call: FDirectStatusFunction is nil');
var ErrorStatus: Integer;
Result := FDirectStatusFunction(FDirectPtr, Msg, WParam, LParam, ErrorStatus);
if ErrorStatus <> 0 then begin
var Dummy: Integer;
FDirectStatusFunction(FDirectPtr, SCI_SETSTATUS, 0, 0, Dummy);
if ErrorStatus < SC_STATUS_WARN_START then
ErrorFmt('Error status %d returned after Call(%u, %d, %d) = %d',
[ErrorStatus, Msg, WParam, LParam, Result]);
end;
WarnStatus := ErrorStatus;
end;
function TScintEdit.Call(Msg: Cardinal; WParam: Longint;
const LParamStr: TScintRawString): Longint;
begin
var Dummy: Integer;
Result := Call(Msg, WParam, LParamStr, Dummy);
end;
function TScintEdit.Call(Msg: Cardinal; WParam: Longint;
const LParamStr: TScintRawString; out WarnStatus: Integer): Longint;
begin
Result := Call(Msg, WParam, LPARAM(PAnsiChar(LParamStr)), WarnStatus);
end;
procedure TScintEdit.CancelAutoComplete;
begin
Call(SCI_AUTOCCANCEL, 0, 0);
end;
procedure TScintEdit.CancelAutoCompleteAndCallTip;
begin
CancelAutoComplete;
CancelCallTip;
end;
procedure TScintEdit.CancelCallTip;
begin
Call(SCI_CALLTIPCANCEL, 0, 0);
end;
function TScintEdit.CanPaste: Boolean;
begin
Result := Call(SCI_CANPASTE, 0, 0) <> 0;
end;
function TScintEdit.CanRedo: Boolean;
begin
Result := Call(SCI_CANREDO, 0, 0) <> 0;
end;
function TScintEdit.CanUndo: Boolean;
begin
Result := Call(SCI_CANUNDO, 0, 0) <> 0;
end;
procedure TScintEdit.Change(const AInserting: Boolean;
const AStartPos, ALength, ALinesDelta: Integer);
var
Info: TScintEditChangeInfo;
begin
inherited Changed;
if Assigned(FOnChange) then begin
Info.Inserting := AInserting;
Info.StartPos := AStartPos;
Info.Length := ALength;
Info.LinesDelta := ALinesDelta;
FOnChange(Self, Info);
end;
end;
procedure TScintEdit.CheckPosRange(const StartPos, EndPos: Integer);
begin
if (StartPos < 0) or (StartPos > EndPos) or (EndPos > GetRawTextLength) then
ErrorFmt('CheckPosRange: Invalid range (%d, %d)', [StartPos, EndPos]);
end;
procedure TScintEdit.ChooseCaretX;
begin
Call(SCI_CHOOSECARETX, 0, 0);
end;
procedure TScintEdit.ClearAll;
begin
Call(SCI_CLEARALL, 0, 0);
ChooseCaretX;
end;
procedure TScintEdit.ClearCmdKey(const Key: AnsiChar; const Shift: TShiftState);
begin
ClearCmdKey(KeyToKeyCode(Key), Shift);
end;
procedure TScintEdit.ClearCmdKey(const KeyCode: TScintKeyCode; const Shift: TShiftState);
begin
Call(SCI_CLEARCMDKEY, KeyCodeAndShiftToKeyDefinition(KeyCode, Shift), 0);
end;
procedure TScintEdit.ClearIndicators(
const IndicatorNumber: TScintIndicatorNumber);
begin
Call(SCI_SETINDICATORCURRENT, IndicatorNumber, 0);
Call(SCI_INDICATORCLEARRANGE, 0, RawTextLength);
end;
procedure TScintEdit.ClearSelection;
begin
Call(SCI_CLEAR, 0, 0);
end;
procedure TScintEdit.ClearUndo(const ClearChangeHistory: Boolean);
begin
{ SCI_EMPTYUNDOBUFFER resets the save point but doesn't send a
SCN_SAVEPOINTREACHED notification. Call SetSavePoint manually to get
that. SetSavePoint additionally resets FForceModified. }
SetSavePoint;
Call(SCI_EMPTYUNDOBUFFER, 0, 0);
if ClearChangeHistory and (FChangeHistory <> schDisabled) then begin
Call(SCI_SETCHANGEHISTORY, SC_CHANGE_HISTORY_DISABLED, 0);
var Flags := SC_CHANGE_HISTORY_ENABLED;
if FChangeHistory = schMarkers then
Flags := Flags or SC_CHANGE_HISTORY_MARKERS
else
Flags := Flags or SC_CHANGE_HISTORY_INDICATORS;
Call(SCI_SETCHANGEHISTORY, Flags, 0);
end;
end;
function TScintEdit.ConvertRawStringToString(const S: TScintRawString): String;
var
SrcLen, DestLen: Integer;
DestStr: UnicodeString;
begin
SrcLen := Length(S);
if SrcLen > 0 then begin
DestLen := MultiByteToWideChar(FCodePage, 0, PAnsiChar(S), SrcLen, nil, 0);
if DestLen <= 0 then
Error('MultiByteToWideChar failed');
SetString(DestStr, nil, DestLen);
if MultiByteToWideChar(FCodePage, 0, PAnsiChar(S), SrcLen, @DestStr[1],
Length(DestStr)) <> DestLen then
Error('Unexpected result from MultiByteToWideChar');
end;
Result := DestStr;
end;
function TScintEdit.ConvertPCharToRawString(const Text: PChar;
const TextLen: Integer): TScintRawString;
var
DestLen: Integer;
DestStr: TScintRawString;
begin
if TextLen > 0 then begin
DestLen := WideCharToMultiByte(FCodePage, 0, Text, TextLen, nil, 0, nil, nil);
if DestLen <= 0 then
Error('WideCharToMultiByte failed');
InitRawString(DestStr, DestLen);
if WideCharToMultiByte(FCodePage, 0, Text, TextLen, @DestStr[1], Length(DestStr),
nil, nil) <> DestLen then
Error('Unexpected result from WideCharToMultiByte');
end;
Result := DestStr;
end;
function TScintEdit.ConvertStringToRawString(const S: String): TScintRawString;
begin
Result := ConvertPCharToRawString(PChar(S), Length(S));
end;
procedure TScintEdit.CopyToClipboard;
begin
Call(SCI_COPY, 0, 0);
end;
procedure TScintEdit.CreateParams(var Params: TCreateParams);
begin
inherited;
CreateSubClass(Params, 'Scintilla');
//Params.ExStyle := Params.ExStyle or WS_EX_CLIENTEDGE;
Params.WindowClass.style := Params.WindowClass.style and
not (CS_HREDRAW or CS_VREDRAW);
end;
procedure TScintEdit.CreateWnd;
begin
if IsscintLibary = 0 then
Error('CreateWnd: IsscintLibary is 0');
inherited;
FDirectPtr := Pointer(SendMessage(Handle, SCI_GETDIRECTPOINTER, 0, 0));
if FDirectPtr = nil then
Error('CreateWnd: FDirectPtr is nil');
FDirectStatusFunction := SciFnDirectStatus(SendMessage(Handle, SCI_GETDIRECTSTATUSFUNCTION, 0, 0));
if not Assigned(FDirectStatusFunction) then
Error('CreateWnd: FDirectStatusFunction is nil');
UpdateCodePage;
Call(SCI_SETCOMMANDEVENTS, 0, 0);
Call(SCI_SETMODEVENTMASK, SC_MOD_INSERTTEXT or SC_MOD_DELETETEXT, 0);
Call(SCI_SETCARETPERIOD, GetCaretBlinkTime, 0);
Call(SCI_SETSCROLLWIDTHTRACKING, 1, 0);
{ The default popup menu conflicts with the VCL's PopupMenu }
Call(SCI_USEPOPUP, 0, 0);
SetDefaultWordChars;
ApplyOptions;
UpdateStyleAttributes;
if FAcceptDroppedFiles then
DragAcceptFiles(Handle, True);
end;
procedure TScintEdit.CutToClipboard;
begin
Call(SCI_CUT, 0, 0);
end;
procedure TScintEdit.DeleteAllMarkersOnLine(const Line: Integer);
begin
FLines.CheckIndexRange(Line);
Call(SCI_MARKERDELETE, Line, -1);
end;
procedure TScintEdit.DeleteMarker(const Line: Integer;
const Marker: TScintMarkerNumber);
begin
FLines.CheckIndexRange(Line);
Call(SCI_MARKERDELETE, Line, Marker);
end;
procedure TScintEdit.EndUndoAction;
begin
Call(SCI_ENDUNDOACTION, 0, 0);
end;
procedure TScintEdit.EnsureLineVisible(const Line: Integer);
begin
FLines.CheckIndexRange(Line);
Call(SCI_ENSUREVISIBLE, Line, 0);
end;
class function TScintEdit.GetErrorException(const S: String): EScintEditError;
{ Can be used when just calling Error would cause a compiler warning because it doesn't realize Error always raises }
begin
Result := EScintEditError.Create('TScintEdit error: ' + S);
end;
class procedure TScintEdit.Error(const S: String);
begin
raise GetErrorException(S);
end;
class procedure TScintEdit.ErrorFmt(const S: String; const Args: array of const);
begin
Error(Format(S, Args));
end;
function TScintEdit.FindRawText(const StartPos, EndPos: Integer;
const S: TScintRawString; const Options: TScintFindOptions;
out MatchRange: TScintRange): Boolean;
begin
SetTarget(StartPos, EndPos);
Call(SCI_SETSEARCHFLAGS, GetSearchFlags(Options), 0);
Result := Call(SCI_SEARCHINTARGET, Length(S), S) >= 0;
if Result then
MatchRange := GetTarget;
end;
function TScintEdit.FindText(const StartPos, EndPos: Integer; const S: String;
const Options: TScintFindOptions; out MatchRange: TScintRange): Boolean;
begin
Result := FindRawText(StartPos, EndPos, ConvertStringToRawString(S),
Options, MatchRange);
end;
procedure TScintEdit.FoldLine(const Line: Integer; const Fold: Boolean);
begin
FLines.CheckIndexRange(Line);
{ If the line is not part of a fold the following will return False }
var Folded := Call(SCI_GETFOLDEXPANDED, Line, 0) = 0;
if Fold <> Folded then begin
{ If the line is not part of a fold the following will do nothing
and else if the line is not the header Scintilla will lookup the
header for us }
Call(SCI_TOGGLEFOLD, Line, 0);
end;
end;
procedure TScintEdit.ForceModifiedState;
begin
if not FForceModified then begin
FForceModified := True;
if Assigned(FOnModifiedChange) then
FOnModifiedChange(Self);
end;
end;
function TScintEdit.FormatRange(const Draw: Boolean;
const RangeToFormat: PScintRangeToFormat): Integer;
begin
Result := Call(SCI_FORMATRANGE, Ord(Draw), LPARAM(RangeToFormat));
end;
procedure TScintEdit.ForwardMessage(const Message: TMessage);
begin
if HandleAllocated then
CallWindowProc(DefWndProc, Handle, Message.Msg, Message.WParam, Message.LParam);
end;
function TScintEdit.GetAutoCompleteActive: Boolean;
begin
Result := Call(SCI_AUTOCACTIVE, 0, 0) <> 0;
end;
function TScintEdit.GetByteAtPosition(const Pos: Integer): AnsiChar;
begin
Result := AnsiChar(Call(SCI_GETCHARAT, Pos, 0));
end;
function TScintEdit.GetCallTipActive: Boolean;
begin
Result := Call(SCI_CALLTIPACTIVE, 0, 0) <> 0;
end;
function TScintEdit.GetCaretColumn: Integer;
begin
Result := GetColumnFromPosition(GetCaretPosition);
end;