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ATBinHex.pas
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ATBinHex.pas
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{***********************************}
{ }
{ ATBinHex Component }
{ Copyright (C) Alexey Torgashin }
{ http://uvviewsoft.com }
{ }
{***********************************}
{$OPTIMIZATION OFF} //Delphi 5 cannot compile this with optimization on
{$BOOLEVAL OFF} //Short boolean evaluation required
{$RANGECHECKS OFF} //For assignment compatability between DWORD and Longint
{$I ATBinHexOptions.inc} //ATBinHex options
{$R ATBinHexResources.res} //ATBinHex resources
unit ATBinHex;
interface
uses
Windows, Messages, SysUtils, Classes, Controls, Graphics,
StdCtrls, ExtCtrls,
{$ifdef NOTIF} ATFileNotification, {$endif}
{$ifdef NOTIF} ATFileNotificationSimple, {$endif}
{$ifdef SEARCH} ATStreamSearch, {$endif}
{$ifdef PRINT} Dialogs, {$endif}
{$ifdef REGEX} DIRegEx, {$endif}
ATxCodepages,
Menus;
type
TATBinHexMode = (
vbmodeText,
vbmodeBinary,
vbmodeHex,
vbmodeUnicode,
vbmodeUHex
);
TATUnicodeFormat = (
vbUnicodeFmtUnknown,
vbUnicodeFmtLE,
vbUnicodeFmtBE
);
TATDirection = (
vdirUp,
vdirDown
);
TATMouseRelativePosition = (
vmPosInner,
vmPosUpper,
vmPosLower,
vmPosLefter,
vmPosRighter
);
TATFileSource = (
vfSrcNone,
vfSrcFile,
vfSrcStream
);
TATLineType = (
vbLineAll,
vbLineWord,
vbLineURL
);
TATPopupCommand = (
vpCmdCopy,
vpCmdCopyHex,
vpCmdCopyLink,
vpCmdSelectLine,
vpCmdSelectAll,
vpCmdEncMenu
);
TATPopupCommands = set of TATPopupCommand;
TATBinHexOutputOptions = record
ShowNonPrintable, //"Show non-printable" mode is on
ShowCR, //Current line has CR (not wrapped)
IsFontOem, //Current font is FontOEM, not Font
IsFontFixed: Boolean; //Current font has fixed width
TabSize: Integer; //"Tab size" value
end;
TATBinHexDrawLine = procedure(
ASender: TObject;
ACanvas: TCanvas;
const AStr, AStrAll: WideString;
const ARect: TRect;
const ATextPnt: TPoint;
var ADone: Boolean) of object;
TATBinHexDrawLine2 = procedure(
ASender: TObject;
ACanvas: TCanvas;
const AStr: WideString;
const APnt: TPoint;
const AOptions: TATBinHexOutputOptions) of object;
TATBinHexClickURL = procedure(
ASender: TObject;
const AString: AnsiString) of object;
const
cMaxLength = 2 * 1024; //Limits for "Maximal line length" value
cMinLength = 2; //
cMaxLengthSel = 8 * 1024; //Max length for "select line" command
cMaxURLs = 500; //Max URLs count in buffer
cFindGap = 30; //FindAll: offset below buffer position to find partial matches
cFindMax = 1000; //FindAll: max matches
type
TATStringExtent = array[0 .. cMaxLength] of Integer;
TATUrlArray = array[1 .. cMaxURLs] of record
FString: AnsiString;
FPos: Int64;
end;
TATFindArray = array[1 .. cFindMax] of record
FPos, FLen: Int64;
end;
function StringExtent(
ACanvas: TCanvas;
const AStr: WideString;
var AExtent: TATStringExtent;
const AOptions: TATBinHexOutputOptions): Boolean;
const
cATBinHexCommandSet = [
vpCmdCopy,
vpCmdCopyHex,
vpCmdCopyLink,
vpCmdSelectLine,
vpCmdSelectAll,
vpCmdEncMenu];
cATBinHexBkColor = $ECECEC; //Default Hex mode back color
type
PIntegerArray = ^TIntegerArray;
TIntegerArray = array[1 .. 1000 * 1000] of Integer;
var
TextRepFrom1: string = '';
TextRepFrom2: string = '';
TextRepFrom3: string = '';
TextRepTo1: char = '.';
TextRepTo2: char = '.';
TextRepTo3: char = '.';
type
TATBinHex = class(TPanel)
private
FFileName: WideString;
FFileHandle: THandle;
FFileSize: Int64;
FFileOK: Boolean;
FFileUnicodeFmt: TATUnicodeFormat;
FFileSourceType: TATFileSource;
{$ifdef SEARCH}
FSearch,
FSearch2: TATStreamSearch;
FSearchStarted: Boolean;
{$endif}
FLineSp: integer;
FStream: TStream;
FBuffer: PAnsiChar;
FBufferMaxOffset: Integer;
FBufferAllocSize: Integer;
FLinesShow: Boolean;
FLinesStep: Integer;
FLinesBufSize: Integer;
FLinesData: PIntegerArray;
FLinesNum: Integer;
FLinesCount: Integer;
FLinesExtUse: Boolean;
FLinesExtList: AnsiString;
FBitmap: TBitmap;
FTimerAutoScroll: TTimer;
FTimerNiceScroll: TTimer;
FStrings: TObject;
FMenu: TPopupMenu;
FMenuItemCopy: TMenuItem;
FMenuItemCopyHex: TMenuItem;
FMenuItemCopyLink: TMenuItem;
FMenuItemSelectLine: TMenuItem;
FMenuItemSelectAll: TMenuItem;
FMenuItemEncMenu: TMenuItem;
FMenuItemSep1: TMenuItem;
FMenuItemSep2: TMenuItem;
FMenuCodepages: TPopupMenu;
FMenuCodepagesUn: TPopupMenu;
{$ifdef NOTIF}
FNotif: TATFileNotification;
FNotif2: TATFileNotificationSimple;
{$endif}
FAutoReload: Boolean;
FAutoReloadBeep: Boolean;
FAutoReloadFollowTail: Boolean;
FAutoReloadSimple: Boolean;
FAutoReloadSimpleTime: Integer;
FLockCount: Integer;
FBufferPos: Int64;
FViewPos: Int64; //Position of view area (bytes)
FViewAtEnd: Boolean; //Shows if we are at the end of file, after redraw
FViewPageSize: Int64; //Page size (number of bytes on screen), after redraw
FHViewPos: Integer; //Horizontal scroll position (px)
FHViewWidth: Integer; //Horizontal width of text on screen, after redraw
FSelStart: Int64;
FSelLength: Int64;
FMode: TATBinHexMode;
FEncoding: TATEncoding;
FUrlArray: TATUrlArray;
FFindArray: TATFindArray;
FUrlShow: Boolean;
FTextWidth: Integer;
FTextWidthHex: Integer;
FTextWidthUHex: Integer;
FTextWidthFit: Boolean;
FTextWidthFitHex: Boolean;
FTextWidthFitUHex: Boolean;
FTextWrap: Boolean;
FTextNonPrintable: Boolean;
FTextOemSpecial: Boolean;
FTextGutter: Boolean;
FTextGutterWidth: Integer;
FTextColorHex: TColor;
FTextColorHex2: TColor;
FTextColorHexBack: TColor;
FTextColorLines: TColor;
FTextColorError: TColor;
FTextColorGutter: TColor;
FTextColorURL: TColor;
FTextColorHi: TColor;
FSearchIndentVert: Integer;
FSearchIndentHorz: Integer;
FTabSize: Integer;
FPopupCommands: TATPopupCommands;
FEnabled2: Boolean;
FEnableSel: Boolean;
FMaxLength: Integer;
FMaxLengths: array[TATBinHexMode] of Integer;
FMaxClipboardDataSizeMb: Integer;
FFontOEM: TFont;
FFontFooter: TFont;
FFontGutter: TFont;
FHexOffsetLen: Integer;
FFontHeight: Integer;
FFontFirstChar: AnsiChar;
FFontWidthDigits: Integer;
FFontMonospaced: Boolean;
FMouseDown: Boolean;
FMouseStart: Int64;
FMouseStartShift: Int64;
FMouseStartDbl: Int64;
FMouseDblClick: Boolean;
FMouseTriClick: Boolean;
FMouseTriTime: DWORD;
FMousePopupPos: TPoint;
FMouseRelativePos: TATMouseRelativePosition;
FMouseNiceScroll: Boolean;
FMouseNiceScrollPos: TPoint;
FClientHeight: Integer;
FOnSelectionChange: TNotifyEvent;
FOnOptionsChange: TNotifyEvent;
FOnScroll: TNotifyEvent;
FOnDrawLine: TATBinHexDrawLine;
FOnDrawLine2: TATBinHexDrawLine2;
FOnClickURL: TATBinHexClickURL;
{$ifdef NOTIF}
FOnFileReload: TNotifyEvent;
{$endif}
{$ifdef PRINT}
FMarginLeft: Double;
FMarginTop: Double;
FMarginRight: Double;
FMarginBottom: Double;
FPrintFooter: Boolean;
{$endif}
procedure FillEncMenu(M: TPopupMenu);
procedure AllocBuffer;
function SourceAssigned: Boolean;
function ReadSource(const APos: Int64; ABuffer: Pointer; ABufferSize: DWORD; var AReadSize: DWORD): Boolean;
procedure ReadBuffer(const APos: Int64 = -1);
procedure InitData;
procedure FreeData;
function LoadFile(ANewFile: Boolean): Boolean;
function LoadStream: Boolean;
function PosBefore(const APos: Int64; ALineType: TATLineType; ADir: TATDirection): Int64;
procedure ReadUnicodeFmt;
procedure HideScrollbars;
procedure UpdateVertScrollbar;
procedure UpdateHorzScrollbar;
procedure SetMode(AMode: TATBinHexMode);
procedure SetTextEncoding(AValue: TATEncoding);
procedure SetTextWidthTo(AValue: Integer; var AField: Integer);
procedure SetTextWidthHexTo(AValue: Integer; var AField: Integer);
procedure SetTextWidthUHexTo(AValue: Integer; var AField: Integer);
procedure SetTextWidth(AValue: Integer);
procedure SetTextWidthHex(AValue: Integer);
procedure SetTextWidthUHex(AValue: Integer);
procedure SetTextWidthFit(AValue: Boolean);
procedure SetTextWidthFitHex(AValue: Boolean);
procedure SetTextWidthFitUHex(AValue: Boolean);
procedure SetTextWrap(AValue: Boolean);
procedure SetTextNonPrintable(AValue: Boolean);
procedure SetTextUrlHilight(AValue: Boolean);
procedure SetSearchIndentVert(AValue: Integer);
procedure SetSearchIndentHorz(AValue: Integer);
procedure SetFontOEM(AValue: TFont);
procedure SetFontFooter(AValue: TFont);
procedure SetFontGutter(AValue: TFont);
procedure SetLinesBufSize(AValue: Integer);
procedure SetLinesCount(AValue: Integer);
procedure SetLinesStep(AValue: Integer);
procedure InitHexOffsetLen;
procedure MsgReadError;
function MsgReadRetry: Boolean;
procedure MsgOpenError;
function DrawOffsetX: Integer;
function DrawOffsetY: Integer;
procedure SetTextGutter(AValue: Boolean);
function LinesNum(ABitmap: TBitmap = nil): Integer;
function ColsNumFit(ABitmap: TBitmap = nil): Integer;
function ColsNumHexFit(ABitmap: TBitmap = nil): Integer;
function ColsNumUHexFit(ABitmap: TBitmap = nil): Integer;
function ColsNum(ABitmap: TBitmap = nil): Integer;
function PosBad(const APos: Int64): Boolean;
function PosMax: Int64;
function PosLast: Int64;
procedure PosFixCRLF(var APos: Int64);
procedure PosAt(const APos: Int64; ARedraw: Boolean = True);
procedure PosDec(const N: Int64);
procedure PosInc(const N: Int64);
procedure PosLineUp(ALines: Integer = 1); overload;
procedure PosLineDown(ALines: Integer = 1); overload;
procedure PosLineUp(AViewAtEnd: Boolean; ALines: Integer); overload;
procedure PosLineDown(AViewAtEnd: Boolean; ALines: Integer); overload;
procedure PosPageUp;
procedure PosPageDown;
procedure PosBegin;
procedure PosEndTry;
procedure PosEnd;
procedure HPosAt(APos: Integer; ARedraw: Boolean = True);
procedure HPosInc(N: Integer);
procedure HPosDec(N: Integer);
procedure HPosBegin;
procedure HPosEnd;
procedure HPosLeft;
procedure HPosRight;
procedure HPosPageLeft;
procedure HPosPageRight;
function HPosWidth: Integer;
function HPosMax: Integer;
function LineWithCR(const APos: Int64; const ALine: WideString): Boolean;
function LineWithGutterDot(const APos: Int64): Boolean;
function OutputOptions(AShowCR: Boolean = False): TATBinHexOutputOptions;
function GetPosPercent: Integer;
procedure SetPosPercent(APos: Integer);
function GetPosLine: Integer;
procedure SetPosLine(ALine: Integer);
function GetPosOffset: Int64;
procedure SetPosOffset(const APos: Int64);
procedure MouseWheelUp(Sender: TObject; Shift: TShiftState;
MousePos: TPoint; var Handled: Boolean);
procedure MouseWheelDown(Sender: TObject; Shift: TShiftState;
MousePos: TPoint; var Handled: Boolean);
function MousePosition(AX, AY: Integer; AStrict: Boolean = False): Int64;
procedure MouseMoveAction(AX, AY: Integer);
procedure TimerAutoScrollTimer(Sender: TObject);
procedure TimerNiceScrollTimer(Sender: TObject);
procedure MenuItemCopyClick(Sender: TObject);
procedure MenuItemCopyHexClick(Sender: TObject);
procedure MenuItemCopyLinkClick(Sender: TObject);
procedure MenuItemSelectLineClick(Sender: TObject);
procedure MenuItemSelectAllClick(Sender: TObject);
procedure MenuItemEncMenuClick(Sender: TObject);
procedure UpdateMenu(Sender: TObject);
function GetTextPopupCaption(AIndex: TATPopupCommand): AnsiString;
procedure SetTextPopupCaption(AIndex: TATPopupCommand; const AValue: AnsiString);
procedure SetTabSize(AValue: Integer);
procedure InitURLs;
procedure FindURLs(ABufSize: DWORD);
function PosURL(const APos: Int64): AnsiString;
function IsPosURL(const APos: Int64): Boolean;
function FindLineLength(const AStartPos: Int64; ADir: TATDirection; var ALine: WideString): Integer;
function FindLinePos(const AStartPos: Int64; ADir: TATDirection; var ALine: WideString; APassiveMove: Boolean = False): Int64;
procedure PosNextLineFrom(const AStartPos: Int64; ALinesNum: Integer; ADir: TATDirection; APassiveMove: Boolean = False; ARedraw: Boolean = True);
procedure PosNextLine(ALinesNum: Integer; ADir: TATDirection; AViewAtEnd: Boolean);
function IsCharSpec(ch: WideChar): boolean;
function GetChar(const ACharPos: Int64): WideChar;
function GetHex(const ACharPos: Int64): WideString;
function DecodeString(const S: WideString): WideString;
function CharSize: Integer;
function IsFileEmpty: Boolean;
function IsModeVariable: Boolean;
function IsModeUnicode: Boolean;
function IsUnicodeBE: Boolean;
procedure NormalizePos(var APos: Int64);
function NormalizedPos(const APos: Int64): Int64;
procedure NextPos(var APos: Int64; ADir: TATDirection; AChars: Integer = 1);
procedure SelectLineAtPos(const APos: Int64; ALineType: TATLineType);
procedure ContextPopup(Sender: TObject; MousePos: TPoint; var Handled: Boolean);
function ActiveFont: TFont;
function ActiveLinesShow: Boolean;
procedure DrawGutterTo(ABitmap: TBitmap);
procedure DrawEmptyTo(
ABitmap: TBitmap;
APageWidth,
APageHeight: Integer;
APrintMode: Boolean);
{$ifdef NOTIF}
procedure NotifChanged(Sender: TObject);
procedure DoFileReload;
procedure SetAutoReload(AValue: Boolean);
{$endif}
procedure Lock;
procedure Unlock;
function Locked: Boolean;
function GetSelTextRaw(AMaxSize: Integer = 0): AnsiString;
function GetSelText: AnsiString;
function GetSelTextShort: AnsiString;
function GetSelTextW: WideString;
function GetSelTextShortW: WideString;
procedure DoSelectionChange;
function GetMaxLengths(AIndex: TATBinHexMode): Integer;
procedure SetMaxLengths(AIndex: TATBinHexMode; AValue: Integer);
procedure SetMaxClipboardDataSizeMb(AValue: Integer);
procedure SetEnabled2(AValue: Boolean);
procedure SetMouseNiceScroll(AValue: Boolean);
procedure DrawNiceScroll;
property MouseNiceScroll: Boolean read FMouseNiceScroll write SetMouseNiceScroll;
procedure ExitProc(Sender: TObject);
procedure EncodingMenuItemClick(Sender: TObject);
procedure EncodingMenuUnItemClick(Sender: TObject);
function GetTextEncodingName: AnsiString;
procedure SetFileUnicodeFmt(AValue: TATUnicodeFormat);
procedure SetTextOemSpecial(AValue: Boolean);
function CountLines(ABufSize: Integer): Boolean;
function GetLineNumberOffset(ALine: Integer; AFindLine: Boolean; var ACurrentLine: Integer; var AOffset: Int64): Boolean;
function FindLineNum(const AOffset: Int64): Integer;
function StringAtPos(const APos: Int64): WideString;
{$ifdef SEARCH}
procedure FindAll;
function GetOnSearchProgress: TATStreamSearchProgress;
procedure SetOnSearchProgress(AValue: TATStreamSearchProgress);
function GetSearchResultStart: Int64;
function GetSearchResultLength: Int64;
function GetSearchString: WideString;
{$endif}
procedure DoOptionsChange;
procedure DoScroll;
procedure DoDrawLine(ACanvas: TCanvas; const AStr: WideString; const APos: Int64;
const ARect: TRect; const ATextPnt: TPoint; var ADone: Boolean);
procedure DoDrawLine2(ACanvas: TCanvas; const AStr: WideString;
const APnt: TPoint; const AOptions: TATBinHexOutputOptions);
procedure DoClickURL(const AMousePos: Int64);
protected
procedure DblClick; override;
procedure Resize; override;
procedure Paint; override;
procedure WMGetDlgCode(var Message: TMessage); message WM_GETDLGCODE;
procedure WMEraseBkgnd(var Message: TMessage); message WM_ERASEBKGND;
procedure WMVScroll(var Message: TWMVScroll); message WM_VSCROLL;
procedure WMHScroll(var Message: TWMHScroll); message WM_HSCROLL;
procedure KeyDown(var Key: Word; Shift: TShiftState); override;
procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
procedure MouseMove(Shift: TShiftState; X, Y: Integer); override;
procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
procedure CreateParams(var Params: TCreateParams); override;
procedure SetEnabled(AValue: Boolean); override;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
function Open(const AFileName: WideString; ARedraw: Boolean = True): Boolean;
function OpenStream(AStream: TStream; ARedraw: Boolean = True): Boolean;
procedure Reload;
procedure Redraw;
{$ifdef SEARCH}
function FindFirst(const AText: WideString; AOptions: TATStreamSearchOptions;
const AFromPos: Int64 = -1): Boolean;
function FindNext(AFindPrevious: Boolean = False): Boolean;
property SearchResultStart: Int64 read GetSearchResultStart;
property SearchResultLength: Int64 read GetSearchResultLength;
property SearchStarted: Boolean read FSearchStarted;
property SearchString: WideString read GetSearchString;
{$endif}
function IncreaseFontSize(AIncrement: Boolean): Boolean;
procedure CopyToClipboard(AAsHex: Boolean = False);
property SelStart: Int64 read FSelStart;
property SelLength: Int64 read FSelLength;
property SelText: AnsiString read GetSelText;
property SelTextShort: AnsiString read GetSelTextShort;
property SelTextW: WideString read GetSelTextW;
property SelTextShortW: WideString read GetSelTextShortW;
procedure SetSelection(const AStart, ALength: Int64; AScroll: Boolean;
AFireEvent: Boolean = True;
ARedraw: Boolean = True);
procedure Scroll(const APos: Int64; AIndentVert, AIndentHorz: Integer;
ARedraw: Boolean = True);
procedure SelectAll;
procedure SelectNone(AFireEvent: Boolean = True);
procedure DrawTo(
ABitmap: TBitmap;
APageWidth, APageHeight: Integer;
AStringsObject: TObject;
APrintMode: Boolean;
const AFinalPos: Int64;
var ATextWidth, ATextWidthHex, ATextWidthUHex: Integer;
var AViewPageSize: Int64;
var AViewAtEnd: Boolean);
{$ifdef PRINT}
function PrinterCaption: AnsiString;
function PrinterFooter(APageNumber: Integer): WideString;
procedure PrintPreview;
procedure PrintTo(
ACanvas: TCanvas; //ACanvas may be assigned only for Print Preview
APageWidth,
APageHeight: Integer;
APrintRange: TPrintRange;
AFromPage,
AToPage: Integer);
procedure Print(
APrintRange: TPrintRange;
AFromPage: Integer = 1;
AToPage: Integer = MaxInt;
ACopies: Integer = 1;
const ACaption: AnsiString = '');
function MarginsRectPx(
ATargetWidth,
ATargetHeight: Integer;
ATargetPPIX,
ATargetPPIY: Integer): TRect;
function MarginsRectRealPx: TRect;
property MarginLeft: Double read FMarginLeft write FMarginLeft;
property MarginTop: Double read FMarginTop write FMarginTop;
property MarginRight: Double read FMarginRight write FMarginRight;
property MarginBottom: Double read FMarginBottom write FMarginBottom;
property PrintFooter: Boolean read FPrintFooter write FPrintFooter;
{$endif}
property PosPercent: Integer read GetPosPercent write SetPosPercent;
property PosOffset: Int64 read GetPosOffset write SetPosOffset;
property PosLine: Integer read GetPosLine write SetPosLine;
property TextPopupCaption[AIndex: TATPopupCommand]: AnsiString read GetTextPopupCaption write SetTextPopupCaption;
property MaxLengths[AIndex: TATBinHexMode]: Integer read GetMaxLengths write SetMaxLengths;
property MaxClipboardDataSizeMb: Integer read FMaxClipboardDataSizeMb write SetMaxClipboardDataSizeMb;
property FileName: WideString read FFileName;
property FileSize: Int64 read FFileSize;
property FileReadOK: Boolean read FFileOK;
property FileUnicodeFormat: TATUnicodeFormat read FFileUnicodeFmt write SetFileUnicodeFmt;
property TextEncodingName: AnsiString read GetTextEncodingName;
procedure TextEncodingsMenu(AX, AY: Integer);
//Enabled2 is the same as Enabled, but also enables control redrawing:
//we need to disable it during printing.
property Enabled2: Boolean read FEnabled2 write SetEnabled2;
published
property TextLineSpacing: integer read FLineSp write FLineSp default 0;
property TextEnableSel: Boolean read FEnableSel write FEnableSel default True;
property FontOEM: TFont read FFontOEM write SetFontOEM;
property FontFooter: TFont read FFontFooter write SetFontFooter;
property FontGutter: TFont read FFontGutter write SetFontGutter;
property Mode: TATBinHexMode read FMode write SetMode default vbmodeText;
property TextEncoding: TATEncoding read FEncoding write SetTextEncoding default vencANSI;
property TextWidth: Integer read FTextWidth write SetTextWidth default 80;
property TextWidthHex: Integer read FTextWidthHex write SetTextWidthHex default 16;
property TextWidthUHex: Integer read FTextWidthUHex write SetTextWidthUHex default 8;
property TextWidthFit: Boolean read FTextWidthFit write SetTextWidthFit default False;
property TextWidthFitHex: Boolean read FTextWidthFitHex write SetTextWidthFitHex default False;
property TextWidthFitUHex: Boolean read FTextWidthFitUHex write SetTextWidthFitUHex default False;
property TextWrap: Boolean read FTextWrap write SetTextWrap default False;
property TextNonPrintable: Boolean read FTextNonPrintable write SetTextNonPrintable default False;
property TextOemSpecial: Boolean read FTextOemSpecial write SetTextOemSpecial default False;
property TextUrlHilight: Boolean read FUrlShow write SetTextUrlHilight default True;
property TextGutter: Boolean read FTextGutter write SetTextGutter default False;
property TextGutterLines: Boolean read FLinesShow write FLinesShow default True;
property TextGutterLinesStep: Integer read FLinesStep write SetLinesStep default 5;
property TextGutterLinesCount: Integer read FLinesCount write SetLinesCount stored False;
property TextGutterLinesBufSize: Integer read FLinesBufSize write SetLinesBufSize stored False;
property TextGutterLinesExtUse: Boolean read FLinesExtUse write FLinesExtUse default False;
property TextGutterLinesExtList: AnsiString read FLinesExtList write FLinesExtList;
property TextColorHex: TColor read FTextColorHex write FTextColorHex default clNavy;
property TextColorHex2: TColor read FTextColorHex2 write FTextColorHex2 default clBlue;
property TextColorHexBack: TColor read FTextColorHexBack write FTextColorHexBack default cATBinHexBkColor;
property TextColorLines: TColor read FTextColorLines write FTextColorLines default clGray;
property TextColorError: TColor read FTextColorError write FTextColorError default clRed;
property TextColorGutter: TColor read FTextColorGutter write FTextColorGutter default clLtGray;
property TextColorURL: TColor read FTextColorURL write FTextColorURL default clBlue;
property TextColorHi: TColor read FTextColorHi write FTextColorHi default clYellow;
property TextSearchIndentVert: Integer read FSearchIndentVert write SetSearchIndentVert default 5;
property TextSearchIndentHorz: Integer read FSearchIndentHorz write SetSearchIndentHorz default 5;
property TextTabSize: Integer read FTabSize write SetTabSize default 8;
property TextPopupCommands: TATPopupCommands read FPopupCommands write FPopupCommands default cATBinHexCommandSet;
{$ifdef NOTIF}
property AutoReload: Boolean read FAutoReload write SetAutoReload default False;
property AutoReloadBeep: Boolean read FAutoReloadBeep write FAutoReloadBeep default False;
property AutoReloadFollowTail: Boolean read FAutoReloadFollowTail write FAutoReloadFollowTail default True;
property AutoReloadSimple: Boolean read FAutoReloadSimple write FAutoReloadSimple default False;
property AutoReloadSimpleTime: Integer read FAutoReloadSimpleTime write FAutoReloadSimpleTime default 1000;
property OnFileReload: TNotifyEvent read FOnFileReload write FOnFileReload;
{$endif}
{$ifdef SEARCH}
property OnSearchProgress: TATStreamSearchProgress read GetOnSearchProgress write SetOnSearchProgress;
{$endif}
property OnSelectionChange: TNotifyEvent read FOnSelectionChange write FOnSelectionChange;
property OnOptionsChange: TNotifyEvent read FOnOptionsChange write FOnOptionsChange;
property OnScroll: TNotifyEvent read FOnScroll write FOnScroll;
property OnDrawLine: TATBinHexDrawLine read FOnDrawLine write FOnDrawLine;
property OnDrawLine2: TATBinHexDrawLine2 read FOnDrawLine2 write FOnDrawLine2;
property OnClickURL: TATBinHexClickURL read FOnClickURL write FOnClickURL;
end;
function TextIncreaseFontSize(AFont: TFont; ACanvas: TCanvas; AIncrement: Boolean): Boolean;
function STextWidth(ACanvas: TCanvas; const S: WideString): Integer;
procedure STextOut(ACanvas: TCanvas; X, Y: Integer; const S: WideString);
procedure Register;
implementation
uses
Forms,
ATxCodepageList,
{$ifdef PRINT} Printers, {$endif}
{$ifdef PREVIEW} ATPrintPreview, ATxPrintProc, {$endif}
{$ifdef TEST} TntStdCtrls, {$endif}
{$ifdef TNT} TntClasses, {$endif}
ATxSProc, ATxSHex, ATxFProc, ATxClipboard, ATViewerMsg;
{ Important constants: change with care }
const
cMaxLengthDefault = 300; //Default value of "Maximal line length".
//See MaxLengths property description.
//Don't set too large value, it affects default file buffer size.
cMaxLines = 150; //Maximal number of lines on screen supported.
//Don't set too large value because it affects file buffer size.
//Warning: It may be not enough for very high screen resolutions.
//150 should be enough for Height=1200, if we assume that minimal
//font height is 8.
{ Visual constants: may be changed freely }
const
cReloadWithLMBPressed = False; //User: allow auto-reload when LMouseBtn pressed
//User: Regex for URL and email
cReProt = '[a-z]{3,8}';
cReUrl = '\b(' + cReProt + '://|www\.)[\w\d\.\-\?\#\+\{\}=~_$%;:&@,/]+';
cReEmail = '\b[a-z\d\.\-_]+@[a-z\d\.\-]+\.[a-z]+\b';
cCharSpecial = '.'; //Draw: Char for control characters
//Draw: Gutter:
cGutterWidth = 10; // gutter min width (px)
cGutterDotSize = 3; // gutter dot radius (px)
cGutterIndent = 2; // gutter indent (px, right of line num)
//User: Line numbers
cLinesBufSizeMin = 1 * 1024; // buffer size: limits, default
cLinesBufSizeDef = 300 * 1024;
cLinesBufSizeMax = 20 * 1024 * 1024;
cLinesCountMin = 10; // lines max count: limits, default
cLinesCountDef = 2 * 1000;
cLinesCountMax = 100 * 1000;
cLinesStepMin = 1; // lines step limits
cLinesStepMax = 10;
//Draw: "Show non-printable" option:
cCharNonPrintSpace = #$B7; // - char for spaces
cCharNonPrintSpaceOEM = #$FA; // - (for OEM font)
cCharNonPrintTab = #$BB; // - char for tabs
cCharNonPrintTabOEM = #$F9; // - (for OEM font)
cCharNonPrintCR = #$B6; // - char for CRs
cCharNonPrintCROEM = #$FE; // - (for OEM font)
cDrawOffsetMinX = 2; //Draw: Small offset (px) between text and left-top control corner
cDrawOffsetMinY = 0; //
cDrawOffsetBelowY = 2; //Draw: Small offset (0-2 px) subtracted from client height
//Draw: Hex mode:
cHexOffsetSep = ':'; // separator between offset and digits (string, may be empty!)
cHexLinesShow = True; // enable vertical lines
cHexLinesWidth = 2; // width of vertical lines (px)
cHexMaxDigits = 64; //User: hex mode max width (for mouse selection)
//Auto-scroll feature (mouse is out of control area):
cMouseAutoScrollTime = 50; // - timer interval (ms)
cMouseAutoScrollSpeedX = 20; // - horz. speed (px/tick)
cMouseAutoScrollSpeedY = 1; // - vert. speed (lines/tick)
//Nice scroll feature (middle mouse click):
cMouseNiceScroll = True; // - enabled
cMouseNiceScrollTime = 100; // - timer interval (ms)
cMouseNiceScrollSpeedX = 8; // - horz. minimal speed (px/tick)
cMouseNiceScrollSpeedY = 1; // - vert. minimal speed (lines/tick)
cTabSizeMax = 16; //User: Tabulation size limits (chars)
cTabSizeMin = 2;
cArrowScrollSize = 200; //User: Keyboard scroll size (px) for Left/Right keys
cSelectionByDoubleClick = True; //User: Feature: Double click selects current word
cSelectionByTripleClick = True; //User: Feature: Triple click selects current line
cSelectionByShiftClick = True; //User: Feature: Click marks selection start, Shift+Click marks selection end
cSelectionRightIndent = 8; //User: Minimal space (px) before selection start and control right border
cMaxShortLength = 256; //User: Maximal length of string_ for SelTextShort/SelTextShortW properties
cMaxClipboardDataSizeMb = 16; //User: Maximal data size (Mb) for copying to Clipboard
cMaxClipboardDataSizeMbMin = 8; // (default, minimal, maximal)
cMaxClipboardDataSizeMbMax = 256;
cMaxFontSize = 72; //User: Maximal font size for IncreaseFontSize method
cMaxSearchIndent = 80; //User: Maximal vert/horz search indent (avg. chars)
cEncMenuOffsetY = 20; //User: Offset of encodings menu above control center (px)
cResizeFollowTail = True; //User: Notepad feature: when control increases height, it follows file tail
//Draw: Colors:
cColorDisabled = clGrayText; // text color for disabled state
cColorPrintBack = clWhite; // grayscale colors for printing
cColorPrintBackHex = clWhite;
cColorPrintText = clBlack;
cColorPrintTextHex1 = clBlack;
cColorPrintTextHex2 = clBlack;
cColorPrintLines = clGray;
cColorPrintError = clBlack;
cColorPrintURL = clGray;
{ Resources constants: don't change }
var
FBitmapNiceScroll: TBitmap = nil; //NiceScroll mode: bitmap that is drawn when mode is on
const
cBitmapNiceScrollRadius = 16; //NiceScroll mode: bitmap is actually a circle of specified radius
const
crNiceScrollNone = TCursor(-30); //NiceScroll mode: cursor IDs
crNiceScrollUp = TCursor(-31);
crNiceScrollDown = TCursor(-32);
crNiceScrollLeft = TCursor(-33);
crNiceScrollRight = TCursor(-34);
{ Debug form }
{$ifdef TEST}
var
FDebugForm: TForm = nil;
FDebugLabel1: TTntLabel = nil;
FDebugLabel2: TTntLabel = nil;
procedure MsgDebug(const S1, S2: WideString);
begin
if Assigned(FDebugLabel1) and Assigned(FDebugLabel2) then
begin
FDebugLabel1.Caption := S1;
FDebugLabel2.Caption := S2;
end;
end;
function MsgDebugStr(const S: WideString; Pos: Integer): WideString;
begin
Result := S;
if Pos > 0 then
Insert('>', Result, Pos);
end;
procedure InitDebugForm;
begin
FDebugForm := TForm.Create(nil);
with FDebugForm do
begin
Left := 0;
Top := 0;
Width := Screen.Width;
ClientHeight := 25;
Caption := 'Debug';
BorderStyle := bsToolWindow;
BorderIcons := [];
FormStyle := fsStayOnTop;
Font.Name := 'Tahoma';
Font.Size := 8;
Color := clWhite;
Enabled := False;
Show;
end;
FDebugLabel1 := TTntLabel.Create(FDebugForm);
with FDebugLabel1 do
begin
Parent := FDebugForm;
Left := 4;
Top := 4;
end;
FDebugLabel2 := TTntLabel.Create(FDebugForm);
with FDebugLabel2 do
begin
Parent := FDebugForm;
Left := 4;
Top := 18;
end;
MsgDebug('', '');
end;
procedure FreeDebugForm;
begin
FDebugLabel1.Free;
FDebugLabel2.Free;
FDebugForm.Free;
end;
{$endif}
{ Helper functions }
procedure SwapInt64(var N1, N2: Int64);
var
N: Int64;
begin
N := N1;
N1 := N2;
N2 := N;
end;
procedure HiRect(ACanvas: TCanvas; const ARect: TRect);
begin
ACanvas.Pen.Color := clRed;
ACanvas.MoveTo(ARect.Left, ARect.Bottom - 2);
ACanvas.LineTo(ARect.Right, ARect.Bottom - 2);
end;
procedure InvertRect(ACanvas: TCanvas; const ARect: TRect);
begin
Windows.InvertRect(ACanvas.Handle, ARect);
end;
function SConvertForOut(
const S: WideString;
const AOptions: TATBinHexOutputOptions): WideString;
var
chSp,
chTab,
chCR: WideChar;
TabOptions: TStringTabOptions;
begin
Result := S;
if AOptions.IsFontOem then
begin
chSp := cCharNonPrintSpaceOEM;
chTab := cCharNonPrintTabOEM;
chCR := cCharNonPrintCROEM;
end
else
begin
chSp := cCharNonPrintSpace;
chTab := cCharNonPrintTab;
chCR := cCharNonPrintCR;
end;
if AOptions.ShowNonPrintable then
SReplaceAllW(Result, ' ', chSp);
TabOptions.TabSize := AOptions.TabSize;
TabOptions.TabPosition := 0;
TabOptions.FontMonospaced := AOptions.IsFontFixed;
TabOptions.NonPrintableShow := AOptions.ShowNonPrintable;
TabOptions.NonPrintableChar := chTab;
SReplaceTabsW(Result, TabOptions);
if AOptions.ShowNonPrintable and AOptions.ShowCR then
Result := Result + chCR;
end;
procedure STextOut(ACanvas: TCanvas; X, Y: Integer; const S: WideString);
begin
//TextOutW supported under Win9x
TextOutW(ACanvas.Handle, X, Y, PWChar(S), Length(S));
end;
function STextWidth(ACanvas: TCanvas; const S: WideString): Integer;
var
Size: TSize;
begin
//GetTextExtentPoint32W supported under Win9x
Result := 0;
if GetTextExtentPoint32W(ACanvas.Handle, PWChar(S), Length(S), Size) then
Result := Size.cx;
end;
{$ifdef REGEX}
function RegExReplaceToChar(const Str, Re: string; ch: Char; ACaseSens: Boolean): string;
var
RegEx: TDIRegEx;
N_prev, N, i: Integer;
begin
Result := Str;
if (Str = '') or (Re = '') then Exit;
RegEx := TDIPerlRegEx.Create(nil);
try
if ACaseSens then
RegEx.CompileOptions := RegEx.CompileOptions - [coCaseLess]
else
RegEx.CompileOptions := RegEx.CompileOptions + [coCaseLess];
RegEx.MatchPattern := Re;
N_prev := -1;
repeat
RegEx.SetSubjectStr(Result);
if RegEx.Match(0) < 0 then Break;
N := RegEx.MatchedStrFirstCharPos + 1;
if N = N_prev then Break;
N_prev := N;
for i := N to (N + RegEx.MatchedStrLength - 1) do
Result[i] := ch;
until False;
finally
RegEx.Free;
end;
end;
{$endif}
procedure StringOut(
ACanvas: TCanvas;
AX, AY: Integer;
AStr: WideString;
const AOptions: TATBinHexOutputOptions);
begin
{$ifdef REGEX}
if AStr <> '' then
begin
if TextRepFrom1 <> '' then
AStr := RegExReplaceToChar(AStr, TextRepFrom1, TextRepTo1, False);
if TextRepFrom2 <> '' then
AStr := RegExReplaceToChar(AStr, TextRepFrom2, TextRepTo2, False);
if TextRepFrom3 <> '' then
AStr := RegExReplaceToChar(AStr, TextRepFrom3, TextRepTo3, False);
end;
{$endif}
STextOut(ACanvas, AX, AY, SConvertForOut(AStr, AOptions));
end;
function StringWidth(
ACanvas: TCanvas;
const AStr: WideString;
const AOptions: TATBinHexOutputOptions): Integer;
begin
Result := STextWidth(ACanvas, SConvertForOut(AStr, AOptions));
end;
type
TTextExtentEx = array[1 .. MaxInt div SizeOf(Integer)] of Integer;
PTextExtentEx = ^TTextExtentEx;
function StringExtent(
ACanvas: TCanvas;