{ Copyright (C) 2007 Julian Schutsch
This source is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your option)
any later version.
This code 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 Lesser General Public License for more
details.
A copy of the GNU Lesser General Public License is available on the World Wide Web
at <http://www.gnu.org/copyleft/lgpl.html>. You can also obtain it by writing
to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA.
Changelog:
9.27.2007 : Seperation from another Package, first Release under GPL
Version 0.1
10.02.2007 : Licence Changed to LGPL
Added : History
Added : Password Input mode
Fixed : Blank Screen when Resizing so that TopLine disappears.
Added : Fixed Prompt Description infront of Input, moves along with it
Etc : Functions, minor Bugs
Missing : FreeLineWidth full support
Version 0.2
10.08.2007 : Removed : Fixed Line Width Support, Source now less complex
Added : Paste/Copy/Cut Ability, Select with Mouse and Shift/Keys
Added : TRTLCriticalsection called FLock to make Writeln/Write Threadsafe
Fixed : GTK 1/2 Linux support, several changes to make that work...
Removed : LineWidth, can cause Property Loading Errors if used with old Apps !
Workarn : GTK Font height gets 2 added on all plattforms, means, win32 have two extra dots unecessarily, can't solve that !
Fixed : Pos 1/End Key changes Scrollbar (Different GTK behaviour !)
Version 0.3
12.06.2008 : Optimized Color String output, still needs testing and PWD Strings are not
changed yet. Improvement visible on Win32, but still to slow, any hacks?
17.06.2008 : TColorString changed completly, now using Arrays instead of linked lists
25.06.2008 : Fixed everything for Multispace support
Added tabulator behaviour
Caret type and Color now customizable
Input Selection Colors published
Speed improvement using precalculated Sum-Widths for TColorString
Lots of minor UTF8 Bugs fixed
26.06.2008 : Escape Codes for some sort of Graphical output (Tables, lines, etc)
Better moving Input
Bug fixes in MakeInputVisible
27.06.2008 : Add FGraphicCharWidth
28.06.2008 : New Escape Code preprocessor
Support for different modes (ANSI color, CmdBox, None(ignore))
29.06.2008 : FStringBuffer added,Works without WakeMainThread now as well
Fixed LineOutAndFill
Added AutoFollow
Todo : Input Masks
Todo : Docu
}
unit uCmdBox;
{$mode objfpc}{$H+}
interface
uses Classes, SysUtils,ExtCtrls,ComCtrls,Controls,Graphics,StdCtrls,Forms,LCLType,LCLIntf,
lmessages,lresources,ClipBrd,LCLProc;
type TCaretType=(cartLine,cartSubBar,cartBigBar,cartUser);
TEscapeCodeType=(esctCmdBox,esctAnsi,esctNone);
TEscapeMode=(escmNone,escmOperation,escmData2,escmData1,escmAnsiOperation,escmAnsiSquare);
type TCmdBox=class;
type TColorstring=class;
type EOnCmdBoxInput=Procedure(ACmdBox:TCmdBox;Input:String) of object;
type EOnCmdBoxInputChange=Procedure(ACmdBox:TCmdBox;InputData:TColorstring) of object;
type
{ TCmdBox }
TCmdBox=class(TCustomControl)
public
constructor Create(AComponent:TComponent);override;
destructor Destroy;override;
protected
procedure Paint;override;
procedure Resize;override;
procedure UTF8KeyPress(var Key:TUTF8Char);override;
procedure KeyDown(var Key:Word;Shift:TShiftState);override;
procedure CreateParams(var Params:TCreateParams);override;
procedure CreateWnd;override;
procedure WMVScroll(var message: TLMVScroll);message LM_VSCROLL;
private
FLock : System.TRTLCriticalSection;
FCaretTimer : TTimer;
FCaretVisible : Boolean;
FLineCount : Integer;
FLines : array of TColorstring;
FLineHeights : array of Integer;
FLineHeightSum : array of Integer;
FTopLine : Integer;
FPageHeight : Integer;
FVisibleLines : Integer;
FVSBVisible : Boolean;
FVSBPos : Integer;
FVSBWidth : Integer;
FClientWidth : Integer;
FClientHeight : Integer;
FCaretX : Integer;
FOutX,FOutY : Integer;
FInputX,FInputY : Integer;
FInputPos : Integer;
FCharHeight : Integer;
FLineOfTopLine : Integer;
FVisibleLineCount : Integer;
FInput : Boolean;
FInputBuffer : TColorstring;
FInputVisible : Boolean;
FInputMinPos : Integer;
FUTF8InputMinPos : Integer;
FOnInput : EOnCmdBoxInput;
FOnAny : EOnCmdBoxInputChange;
FOnInputChange : EOnCmdBoxInputChange;
FBackGroundColor : TColor;
FCurrentColor : TColor;
FCurrentBackGround : TColor;
FFont : TFont;
FPassWordChar : TUTF8Char;
FInputIsPassWord : Boolean;
FHistory : Array of TColorstring;
FHistoryLength : Integer;
FHistoryMax : Integer;
FHistoryPos : Integer;
FInputColor : TColor;
FInputBackground : TColor;
FInputSelColor : TColor;
FInputSelBackGround : TColor;
FMouseDown : Boolean;
FSelStart,FSelEnd : Integer;
FMouseDownInputPos : Integer;
FCurrentString : String;
FCaretColor : TColor;
FCaretType : TCaretType;
FCaretWidth : Integer;
FCaretHeight : Integer;
FCaretYShift : Integer;
FTabWidth : Integer;
FGraphicCharWidth : Integer;
FEscapeCodeType : TEscapeCodeType;
FEscapeMode : TEscapeMode;
FEscapeData : String;
FStringBuffer : TStringList;
FAutoFollow : Boolean;
procedure CaretTimerExecute(Sender:TObject);
procedure SetLineCount(c:Integer);
procedure SetTopLine(Nr:Integer);
procedure AdjustScrollBars;
function AdjustLineHeight(i:Integer):Integer;
procedure MakeInputVisible;
procedure MakeOutVisible;
procedure SetFont(F:TFont);
procedure SetBackGroundColor(c:Tcolor);
function GetSystemMetricsGapSize(const Index:Integer):Integer;
procedure ScrollBarRange(Which: Integer; aRange,aPage: Integer);
procedure ScrollBarPosition(Which,Value:Integer);
function UpdateLineHeights:Integer;
procedure TranslateScrollBarPosition;
procedure ScrollUp;
procedure SetHistoryMax(v:Integer);
procedure InsertHistory;
procedure SetHistoryPos(v:Integer);
procedure EraseBackground(DC:HDC);override;
function GetHistory(i:Integer):string;
procedure DeleteHistoryEntry(i:Integer);
procedure MakeFirstHistoryEntry(i:Integer);
procedure MouseDown(Button:TMouseButton;Shift:TShiftState;x,y:Integer);override;
procedure MouseUp(Button:TMouseButton;Shift:TShiftState;x,y:Integer);override;
procedure MouseMove(Shift:TShiftState;x,y:Integer);override;
function MoveInputCaretTo(x,y:Integer;chl:Boolean):Boolean;
procedure SetSelection(Start,Ende:Integer);
procedure LeftSelection(Start,Ende:Integer);
procedure RightSelection(Start,Ende:Integer);
procedure DeleteSelected;
procedure SetOutY(v:Integer);
procedure IntWrite;
procedure MultiWrite;
procedure SetCaretType(ACaretType:TCaretType);
procedure SetCaretWidth(AValue:Integer);
procedure SetCaretHeight(AValue:Integer);
procedure SetCaretYShift(AValue:Integer);
procedure SetTabWidth(AValue:Integer);
function GetCaretInterval:Integer;
procedure SetCaretInterval(AValue:Integer);
public
function HistoryHas(s:string):Boolean;
function HistoryIndexOf(s:string):Integer;
procedure ClearHistory;
procedure TextColor(C:TColor);
procedure TextBackground(C:TColor);
procedure TextColors(FC,BC:TColor);
procedure Write(s:String);
procedure Writeln(s:String);
procedure WriteStream(Stream:TStream);
procedure Clear;
procedure StartRead(DFC,DBC:TColor;const Desc:String;IFC,IBC:TColor);
procedure StartReadPassWord(DFC,DBC:TColor;const Desc:String;IFC,IBC:TColor);
procedure StopRead;
procedure CopyToClipBoard;
procedure PasteFromClipBoard;
procedure CutToClipBoard;
procedure ClearLine;
property OutX : Integer read FOutX write FOutX;
property OutY : Integer read FOutY write SetOutY;
property TopLine : Integer read FTopLine write SetTopLine;
property History[i:Integer] : string read GetHistory;
property InputPos : Integer read FInputPos;
function HistoryCount : Integer;
published
property Align;
property Anchors;
property ShowHint;
property CaretColor : TColor read FCaretColor write FCaretColor;
property CaretType : TCaretType read FCaretType write SetCaretType;
property CaretWidth : Integer read FCaretWidth write SetCaretWidth;
property CaretHeight : Integer read FCaretHeight write SetCaretHeight;
property CaretYShift : Integer read FCaretYShift write SetCaretYShift;
property OnInput : EOnCmdBoxInput read FOnInput write FOnInput;
property OnInputChange : EOnCmdBoxInputChange read FOnInputChange write FOnInputChange;
property OnAny : EOnCmdBoxInputChange read FOnAny write FOnAny;
property LineCount : Integer read FLineCount write SetLineCount;
property Font : TFont read FFont write SetFont;
property BackGroundColor : TColor read FBackgroundColor write SetBackGroundColor;
property TabWidth : Integer read FTabWidth write SetTabWidth;
property PassWordChar : TUTF8Char read FPassWordChar write FPassWordChar;
property HistoryMax : Integer read FHistoryMax write SetHistoryMax;
property InputSelColor : TColor read FInputSelColor write FInputSelColor;
property InputSelBackGround : TColor read FInputSelBackGround write FInputSelBackGround;
property CaretInterval : Integer read GetCaretInterval write SetCaretInterval;
property EscapeCodeType : TEscapeCodeType read FEscapeCodeType write FEscapeCodeType;
property GraphicalCharacterWidth : Integer read FGraphicCharWidth write FGraphicCharWidth;
property AutoFollow : Boolean read FAutoFollow write FAutoFollow;
property DoubleBuffered default true;
end;
type TColorChar=record
FChar : TUTF8Char;
FCharWidth : Integer;
FSumWidth : Integer;
FWordStart : Integer;
FFrontColor : TColor;
FBackColor : TColor;
end;
type TColorString=class
private
FChars : array of TColorChar;
FSumWidth : Integer;
FPassWordStart : Integer;
FPassWordChar : TUTF8Char;
FTabWidth : Integer;
procedure MinimumLength(V:Integer;FC,BC:TColor);
procedure MaximumLength(V:Integer);
procedure UpdateSum;
public
constructor Create(AFont:TFont);
destructor Destroy;override;
procedure Clear;
procedure OverWrite(S:String;Pos:Integer;FC,BC:TColor);
procedure OverWriteChar(s:TUTF8Char;Pos,ADefWidth:Integer;FC,BC:TColor);
procedure OverWrite(S:TColorstring;Pos:Integer);
procedure OverWritePW(S:TColorstring;PWS,Pos:Integer;PWC:String);
procedure PartOverWrite(S:TColorstring;Start,Ende,Pos:Integer);
procedure LineOutAndFill(ACanvas:TCanvas;AX,AY,ALeftX,AWrapWidth,ACH,ACB,ACaretPos:Integer;ABC,ACC:TColor;ACaretHeight,ACaretWidth,ACaretYShift:Integer;ADrawCaret:Boolean);
function Getstring:String;
function GetPartstring(Start,Ende:Integer):String;
procedure Delete(Index:Integer);
procedure Delete(Index,Len:Integer);
procedure Insert(Index:Integer;C:String;FC,BC:TColor);
procedure BColorBlock(StartPos,EndPos:Integer;C:TColor);
procedure ColorBlock(StartPos,EndPos:Integer;FC,BC:TColor);
function LineCount(AWrapWidth,ACaretPos,ACaretWidth:Integer):Integer;
function GetLength:Integer;
function GetLineOfCaret(AWrapWidth,ACaretPos,ACaretWidth:Integer):Integer;
function GetCharPosition(AWrapWidth,ALine,AXPos:Integer):Integer;
private
FFont : TFont;
FDefaultBackGround : TColor;
public
property TabWidth : Integer read FTabWidth write FTabWidth;
property PassWordChar : TUTF8Char read FPassWordChar write FPassWordChar;
property PassWordStart : Integer read FPassWordStart write FPassWordStart;
property Length : Integer read GetLength;
property DefaultBackGround : TColor read FDefaultBackground write FDefaultBackground;
property Font : TFont read FFont write FFont;
end;
procedure Register;
implementation
procedure TColorString.UpdateSum;
var i : Integer;
LastWordStart : Integer;
SumWidth : Integer;
begin
LastWordStart := 0;
SumWidth := 0;
for i:=0 to High(FChars) do
begin
with FChars[i] do
begin
FWordStart := LastWordStart;
case FChar[1] of
#9:
begin
FCharWidth := (SumWidth div FTabWidth+1)*FTabWidth-SumWidth;
LastWordStart := i+1;
end;
#27:
begin
case FChar[2] of
#9:
begin
FCharWidth := (SumWidth div FTabWidth+1)*FTabWidth-SumWidth;
LastWordStart := i+1;
end;
#10:LastWordStart:=i+1;
#32,#46,#196,#205:
begin
FCharWidth := Ord(FChar[3]);
LastWordStart := i+1;
end;
#33,#47,#197,#206:
begin
FCharWidth := (Ord(FChar[3])+Ord(FChar[4])*256)-SumWidth;
if FCharWidth<0 then FCharWidth:=0;
LastWordStart := i+1;
end;
end;
end;
else if FChar=' ' then LastWordStart:=i+1;
end;
SumWidth := SumWidth+FCharWidth;
FSumWidth := SumWidth;
end;
end;
FSumWidth:=SumWidth;
end;
function TColorString.GetLength:Integer;
begin
Result:=System.Length(FChars);
end;
procedure TCmdBox.SetTabWidth(AValue:Integer);
var i:Integer;
begin
FTabWidth:=AValue;
for i:=0 to FLineCount-1 do FLines[i].TabWidth:=AValue;
UpdateLineHeights;
Invalidate;
end;
procedure TCmdBox.SetCaretWidth(AValue:Integer);
begin
FCaretWidth := AValue;
FCaretType := cartUser;
end;
procedure TCmdBox.SetCaretHeight(AValue:Integer);
begin
FCaretHeight := AValue;
FCaretType := cartUser;
end;
procedure TCmdBox.SetCaretYShift(AValue:Integer);
begin
FCaretYShift := AValue;
FCaretType := cartUser;
end;
procedure TCmdBox.SetCaretType(ACaretType:TCaretType);
begin
case ACaretType of
cartLine:
begin
if HandleAllocated then FCaretHeight:=FFont.GetTextHeight('A')-3 else FCaretHeight:=-1;
FCaretWidth := 1;
FCaretYShift := 3;
end;
cartSubBar:
begin
FCaretWidth := -1;
FCaretHeight := 3;
FCaretYShift := 0;
end;
cartBigBar:
begin
if HandleAllocated then FCaretHeight:=FFont.GetTextHeight('A')-3 else FCaretHeight:=-1;
FCaretWidth := -1;
FCaretYShift := 3;
end;
end;
Invalidate;
FCaretType:=ACaretType;
end;
// TOdo : Use string buffer instead of string (speed improvement expected)
procedure TColorString.LineOutAndFill(ACanvas:TCanvas;AX,AY,ALeftX,AWrapWidth,ACH,ACB,ACaretPos:Integer;ABC,ACC:TColor;ACaretHeight,ACaretWidth,ACaretYShift:Integer;ADrawCaret:Boolean);
var LineStart : Integer;
LineEnd : Integer;
MidWidth : Integer;
LineStartSumWidth : Integer;
x : Integer;
LastLineSumWidth : Integer;
ACHH : Integer;
ACBH : Integer;
procedure DrawLine;
var SameColor : String;
SameForeColor : TColor;
SameBackColor : TColor;
SameColorX : Integer;
SameColorWidth : Integer;
LP : Integer;
CaretX : Integer;
CaretW : Integer;
CW : Integer;
xp : Integer;
begin
if (AY<=-ACH) and (AY>ACanvas.Height) then
begin
Inc(AY,ACH);
Ax:=ALeftx;
Exit;
end;
SameColor:='';
ACanvas.Brush.Style:=bsSolid;
// TODO: Please try to reproduce this Ultra-Shit Error which couples GetTextWidth input to
// TextOut Output. I can't solve this...i am not Stupid Enough for such errors!
// (Is in bug report, should be fixed somewhere in the future!)
ACanvas.Font.GetTextWidth('%%%_$%_Hallo\\\\\\\\\32489738');
// End of shit
LP := LineStart;
CaretX := -1;
while LineStart<>LineEnd+1 do
begin
with FChars[LineStart] do
begin
CW:=FCharWidth;
if FChar=#9 then
begin
if SameColor<>'' then
begin
ACanvas.Font.Color :=SameForeColor;
ACanvas.Brush.Color :=SameBackColor;
ACanvas.FillRect(SameColorX,AY,SameColorX+SameColorWidth,Ay+ACH);
ACanvas.TextOut(SameColorX,AY,SameColor);
Inc(SameColorX,SameColorWidth);
SameColor:='';
end else SameColorX:=AX;
ACanvas.Brush.Color:=FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+FCharWidth,AY+ACH);
end
else
if FChar[1]=#27 then
begin
if SameColor<>'' then
begin
ACanvas.Font.Color :=SameForeColor;
ACanvas.Brush.Color :=SameBackColor;
ACanvas.FillRect(SameColorX,AY,SameColorX+SameColorWidth,Ay+ACH);
ACanvas.TextOut(SameColorX,AY,SameColor);
Inc(SameColorX,SameColorWidth);
SameColor:='';
end else SameColorX:=AX;
case FChar[2] of
#9:
begin
case FChar[3] of
#46:
begin
ACanvas.Pen.Color:=FFrontColor;
ACanvas.Pen.Style:=psDash;
ACanvas.Brush.Color:=FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+FCharWidth,AY+ACH);
xp:=SameColorX;
if xp mod 2<>0 then Inc(xp);
while xp<SameColorX+FCharWidth do
begin
ACanvas.Pixels[xp,AY+ACH-3]:=FFrontColor;
Inc(xp,2);
end;
end;
#196:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Pen.Style := psSolid;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+FCharWidth,AY+ACH);
ACanvas.Line(SameColorX,AY+ACHH,SameColorX+FCharWidth,AY+ACHH);
end;
end;
end;
#10:
begin
CW:=AWrapWidth-SameColorX;
case FChar[3] of
#179:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+CW,AY+ACH);
ACanvas.Line(SameColorX+CW-ACBH,AY,SameColorX+CW-ACBH,AY+ACH);
end;
#180:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+CW,AY+ACH);
ACanvas.Line(SameColorX+CW-ACBH,AY,SameColorX+CW-ACBH,AY+ACH);
ACanvas.Line(SameColorX,AY+ACHH,SameColorX+CW-ACBH,AY+ACHH);
end;
#191:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+CW,AY+ACH);
ACanvas.MoveTo(SameColorX,AY+ACHH);
ACanvas.LineTo(SameColorX+CW-ACBH,AY+ACHH);
ACanvas.LineTo(SameColorX+CW-ACBH,AY+ACH);
end;
#196:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+CW,AY+ACH);
ACanvas.Line(SameColorX,AY+ACHH,SameColorX+CW,AY+ACHH);
end;
#205:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+CW,AY+ACH);
ACanvas.Line(SameColorX,AY+ACHH-1,SameColorX+CW,AY+ACHH-1);
ACanvas.Line(SameColorX,AY+ACHH+1,SameColorX+CW,AY+ACHH+1);
end;
#217:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+CW,AY+ACH);
ACanvas.MoveTo(SameColorX,AY+ACHH);
ACanvas.LineTo(SameColorX+CW-ACBH,AY+ACHH);
ACanvas.LineTo(SameColorX+CW-ACBH,AY-1);
end;
end;
end;
#32,#33:
begin
ACanvas.Brush.Color:=FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+FCharWidth,AY+ACH);
end;
#46,#47:
begin
ACanvas.Pen.Color:=FFrontColor;
ACanvas.Brush.Color:=FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+FCharWidth,AY+ACH);
xp:=SameColorX;
if xp mod 2<>0 then Inc(xp);
while xp<SameColorX+FCharWidth do
begin
ACanvas.Pixels[xp,AY+ACH-3]:=FFrontColor;
Inc(xp,2);
end;
end;
#196,#197:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+FCharWidth,AY+ACH);
ACanvas.Line(SameColorX,AY+ACHH,SameColorX+FCharWidth,AY+ACHH);
end;
#179:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+FCharWidth,AY+ACH);
ACanvas.Line(SameColorX+ACBH,AY,SameColorX+ACBH,AY+ACH);
end;
#193:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+FCharWidth,AY+ACH);
ACanvas.Line(SameColorX,AY+ACHH,SameColorX+ACB,AY+ACHH);
ACanvas.Line(SameColorX+ACBH,AY,SameColorX+ACBH,AY+ACHH);
end;
#194:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+FCharWidth,AY+ACH);
ACanvas.Line(SameColorX,AY+ACHH,SameColorX+ACB,AY+ACHH);
ACanvas.Line(SameColorX+ACBH,AY+ACHH,SameColorX+ACBH,AY+ACH);
end;
#198:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+FCharWidth,AY+ACH);
ACanvas.Line(SameColorX,AY+ACHH,SameColorX+ACB,AY+ACHH);
ACanvas.Line(SameColorX+ACBH,AY,SameColorX+ACBH,AY+ACH);
end;
#195:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+FCharWidth,AY+ACH);
ACanvas.Line(SameColorX+ACBH,AY,SameColorX+ACBH,AY+ACH);
ACanvas.Line(SameColorX+ACBH,AY+ACHH,SameColorX+ACB,AY+ACHH);
end;
#217:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+FCharWidth,AY+ACH);
ACanvas.MoveTo(SameColorX+ACBH,AY);
ACanvas.LineTo(SameColorX+ACBH,AY+ACHH);
ACanvas.LineTo(SameColorX+ACB,AY+ACHH);
end;
#218:
begin
ACanvas.Pen.Color := FFrontColor;
ACanvas.Brush.Color := FBackColor;
ACanvas.Fillrect(SameColorX,AY,SameColorX+FCharWidth,AY+ACH);
ACanvas.MoveTo(SameColorX+ACBH,AY+ACH);
ACanvas.LineTo(SameColorX+ACBH,AY+ACHH);
ACanvas.LineTo(SameColorX+ACB,AY+ACHH);
end;
end;
end
else
if SameColor='' then
begin
if (LP>=FPassWordStart) then
begin
SameColor := FPassWordChar;
SameColorWidth := FFont.GetTextWidth(FPassWordChar);
end
else
begin
SameColor := FChar;
SameColorWidth := FCharWidth;
end;
SameColorX := AX;
SameForeColor := FFrontColor;
SameBackColor := FBackColor;
end
else
begin
if (SameForeColor=FFrontColor) and (SameBackColor=FBackColor) then
begin
if (LP>=FPassWordStart) then
begin
SameColor:=SameColor+FPassWordChar;
Inc(SameColorWidth,FFont.GetTextWidth(FPassWordChar));
end
else
begin
SameColor:=SameColor+FChar;
Inc(SameColorWidth,FCharWidth);
end;
end
else
begin
ACanvas.Font.Color :=SameForeColor;
ACanvas.Brush.Color :=SameBackColor;
ACanvas.FillRect(SameColorX,Ay,SameColorX+SameColorWidth,Ay+ACH);
ACanvas.TextOut(SameColorX,AY,SameColor);
if (LP>=FPassWordStart) then
begin
SameColor := FPassWordChar;
SameColorWidth := FFont.GetTextWidth(FPassWordChar);
end
else
begin
SameColor := FChar;
SameColorWidth := FCharWidth;
end;
SameForeColor := FFrontColor;
SameBackColor := FBackColor;
SameColorX := AX;
end;
end;
if LP=ACaretPos then
begin
CaretX:=AX;
CaretW:=FCharWidth;
end;
Inc(AX,CW);
Inc(LP);
end;
Inc(LineStart);
end;
if SameColor<>'' then
begin
ACanvas.Font.Color := SameForeColor;
ACanvas.Brush.Color := SameBackColor;
ACanvas.FillRect(SameColorX,Ay,SameColorX+SameColorWidth,Ay+ACH);
ACanvas.TextOut(SameColorX,AY,SameColor);
end;
ACanvas.FillRect(AX,AY,AWrapWidth,AY+ACH);
AX:=ALeftX;
Inc(AY,ACH);
if ADrawCaret and (CaretX>=0) then
begin
ACanvas.Brush.Color:=ACC;
if ACaretWidth>=0 then CaretW:=ACaretWidth;
ACanvas.FillRect(CaretX,AY-ACaretHeight-ACaretYShift,CaretX+CaretW,AY-ACaretYShift);
end;
end;
begin
if AWrapWidth<0 then AWrapWidth:=0;
if System.Length(FChars)=0 then
begin
ACanvas.Brush.Style := bsSolid;
ACanvas.Brush.Color := ABC;
ACanvas.FillRect(AX,AY,AWrapWidth,AY+ACH);
Exit;
end;
ACHH := ACH div 2;
ACBH := ACB div 2;
MidWidth := FSumWidth div System.Length(FChars);
LineStart := 0;
LineStartSumWidth := 0;
LastLineSumWidth := 0;
x := 0;
while LineStart<System.Length(FChars) do
begin
x:=LineStart+AWrapWidth div MidWidth;
if x>High(FChars) then x:=High(FChars);
while (x<High(FChars)) and (FChars[x].FSumWidth-LineStartSumWidth<AWrapWidth) do Inc(x);
while (x>LineStart) and (FChars[x].FSumWidth-LineStartSumWidth>=AWrapWidth) do
with FChars[x] do if (FChar<>' ') and (FWordStart>LineStart) then x:=FWordStart-1 else Dec(x);
LineEnd:=x;
DrawLine;
LastLineSumWidth := LineStartSumWidth;
LineStartSumWidth := FChars[x].FSumWidth;
LineStart := x+1;
end;
if ACaretPos>=LineStart then
begin
if ACaretWidth>=0 then x:=ACaretWidth else x:=FFont.GetTextWidth('A');
AX:=LineStartSumWidth-LastLineSumWidth+(ACaretPos-LineStart)*x;
if Ax+x>AWrapWidth then
begin
Ax:=0;
ACanvas.Brush.Color:=ABC;
ACanvas.FillRect(0,AY,AWrapWidth,AY+ACH);
Inc(Ay,ACH);
end;
if ADrawCaret then
begin
ACanvas.Brush.Color:=ACC;
ACanvas.FillRect(AX,AY-ACaretHeight-ACaretYShift,AX+x,AY-ACaretYShift);
end;
end;
end;
function TColorString.GetCharPosition(AWrapWidth,ALine,AXPos:Integer):Integer;
var x,MidWidth,LineStart,LineStartSumWidth,LastLineSumWidth,LastLineStart:Integer;
begin
if AWrapWidth<0 then AWrapWidth:=0;
if System.Length(FChars)=0 then
begin
Result:=0;
Exit;
end;
MidWidth := FSumWidth div System.Length(FChars);
if MidWidth=0 then
begin
Result:=0;
Exit;
end;
LineStart := 0;
LineStartSumWidth := 0;
LastLineSumWidth := 0;
x:=0;
while (LineStart<System.Length(FChars)) and (ALine>=0) do
begin
x:=LineStart+AWrapWidth div MidWidth;
if x>High(FChars) then x:=High(FChars);
while (x<High(FChars)) and (FChars[x].FSumWidth-LineStartSumWidth<AWrapWidth) do Inc(x);
while (x>LineStart) and (FChars[x].FSumWidth-LineStartSumWidth>=AWrapWidth) do
with FChars[x] do if (FChar<>' ') and (FWordStart>LineStart) then x:=FWordStart-1 else Dec(x);
LastLineSumWidth := LineStartSumWidth;
LineStartSumWidth := FChars[x].FSumWidth;
LastLineStart := LineStart;
LineStart := x+1;
Dec(ALine);
end;
Result:=LastLineStart;
while (Result<LineStart) and (FChars[Result].FSumWidth-LastLineSumWidth<=AXPos) do Inc(Result);
end;
function TColorString.GetLineOfCaret(AWrapWidth,ACaretPos,ACaretWidth:Integer):Integer;
var x,MidWidth,LineStart,LineStartSumWidth,LastLineSumWidth:Integer;
begin
if AWrapWidth<0 then AWrapWidth:=0;
if System.Length(FChars)=0 then
begin
Result:=0;
Exit;
end;
MidWidth := FSumWidth div System.Length(FChars);
if MidWidth=0 then
begin
Result:=0;
Exit;
end;
LineStart := 0;
LineStartSumWidth := 0;
LastLineSumWidth := 0;
Result := 0;
x:=0;
while LineStart<System.Length(FChars) do
begin
x:=LineStart+AWrapWidth div MidWidth;
if x>High(FChars) then x:=High(FChars);
while (x<High(FChars)) and (FChars[x].FSumWidth-LineStartSumWidth<AWrapWidth) do Inc(x);
while (x>LineStart) and (FChars[x].FSumWidth-LineStartSumWidth>=AWrapWidth) do
with FChars[x] do if (FChar<>' ') and (FWordStart>LineStart) then x:=FWordStart-1 else Dec(x);
LastLineSumWidth := LineStartSumWidth;
LineStartSumWidth := FChars[x].FSumWidth;
LineStart := x+1;
if ACaretPos<x then Exit;
Inc(Result);
end;
if ACaretWidth>=0 then x:=ACaretWidth else x:=FFont.GetTextWidth('A');
if (ACaretPos>LineStart) or (LineStartSumWidth-LastLineSumWidth+(ACaretPos-LineStart)*x+x<=AWrapWidth) then Dec(Result);
end;
function TColorString.LineCount(AWrapWidth,ACaretPos,ACaretWidth:Integer):Integer;
var x : Integer;
MidWidth : Integer;
LineStart : Integer;
LineStartSumWidth : Integer;
LastLineSumWidth : Integer;
begin
if AWrapWidth<0 then AWrapWidth:=0;
if System.Length(FChars)=0 then
begin
Result:=1;
Exit;
end;
MidWidth := FSumWidth div System.Length(FChars);
if MidWidth=0 then
begin
Result:=1;
Exit;
end;
LineStart := 0;
LineStartSumWidth := 0;
LastLineSumWidth := 0;
Result:=0;
x:=0;
while LineStart<System.Length(FChars) do
begin
x:=LineStart+AWrapWidth div MidWidth;
if x>High(FChars) then x:=High(FChars);
while (x<High(FChars)) and (FChars[x].FSumWidth-LineStartSumWidth<AWrapWidth) do Inc(x);
while (x>LineStart) and (FChars[x].FSumWidth-LineStartSumWidth>=AWrapWidth) do
with FChars[x] do if (FChar<>' ') and (FWordStart>LineStart) then x:=FWordStart-1 else Dec(x);
LastLineSumWidth := LineStartSumWidth;
LineStartSumWidth := FChars[x].FSumWidth;
LineStart := x+1;
Inc(Result);
end;
if ACaretWidth>=0 then x:=ACaretWidth else x:=FFont.GetTextWidth('A');
if (ACaretPos>=LineStart) and (LineStartSumWidth-LastLineSumWidth+(ACaretPos-LineStart)*x+x>AWrapWidth) then Inc(Result);
end;
constructor TColorString.Create(AFont:TFont);
begin
inherited Create;
FTabWidth := 1;
FFont := AFont;
FPassWordStart := MaxInt;
end;
procedure TColorstring.BColorBlock(StartPos,EndPos:Integer;C:TColor);
var i:Integer;
begin
if StartPos<0 then StartPos:=0;
if EndPos>High(FChars) then EndPos:=High(FChars);
for i:=StartPos to EndPos do FChars[i].FBackColor:=C;
end;
procedure TColorstring.ColorBlock(StartPos,EndPos:Integer;FC,BC:TColor);
var i:Integer;
begin
if StartPos<0 then StartPos:=0;
if EndPos>High(FChars) then EndPos:=High(FChars);
for i:=StartPos to EndPos do
begin
FChars[i].FFrontColor := FC;
FChars[i].FBackColor := BC;
end;
end;
procedure TColorstring.Insert(Index:Integer;C:string;FC,BC:TColor);
var i : Integer;
l : Integer;
Pp : Integer;
OldLen : Integer;
SLen : Integer;
begin
OldLen := System.Length(FChars);
SLen := UTF8Length(C);
if OldLen<Index then MinimumLength(Index+SLen,FC,BC) else
begin
MinimumLength(SLen+OldLen,FC,BC);
for i:=OldLen-1 downto Index do FChars[i+SLen]:=FChars[i];
end;
pp := 1;
for i:=0 to SLen-1 do
begin
l:=UTF8CharacterLength(@C[Pp]);
with FChars[Index+i] do
begin
FChar := Copy(C,Pp,l);
if Index+i>=FPassWordStart then FCharWidth:=FFont.GetTextWidth(FPassWordChar) else FCharWidth:=FFont.GetTextWidth(FChar);
FFrontColor := FC;
FBackColor := BC;
end;
Inc(pp,l);
end;
UpdateSum;
end;
procedure TColorstring.Delete(Index,Len:Integer);
var i:Integer;
begin
if (Len=0) or (Index>=System.Length(FChars)) then Exit;
if Index+Len>System.Length(FChars) then Len:=System.Length(FChars)-Index;
for i:=Index to System.Length(FChars)-Len-1 do FChars[i]:=FChars[i+Len];
SetLength(FChars,System.Length(FChars)-Len);
UpdateSum;
end;
procedure TColorstring.Delete(Index:Integer);
var i:Integer;
begin
if (Index>=System.Length(FChars)) then Exit;
for i:=Index to System.Length(FChars)-2 do FChars[i]:=FChars[i+1];
SetLength(FChars,System.Length(FChars)-1);
UpdateSum;
end;
function TColorstring.GetPartstring(Start,Ende:Integer):string;
var i,n : Integer;
Len : Integer;
begin
if Start<0 then Start:=0;
if Ende>High(FChars) then Ende:=High(FChars);
Len:=0;
for i:=Start to Ende do Inc(Len,System.Length(FChars[i].FChar));
SetLength(Result,Len);
Len:=1;
for i:=Start to Ende do
begin
with FChars[i] do
begin
for n:=1 to System.Length(FChar) do
begin
Result[Len]:=FChar[n];
Inc(Len);
end;
end;
end;
end;
function TColorstring.Getstring:String;
var i,n : Integer;
Len : Integer;
begin
Len := 0;
for i:=0 to High(FChars) do Inc(Len,System.Length(FChars[i].FChar));
SetLength(Result,Len);
Len := 1;
for i:=0 to High(FChars) do
begin
with FChars[i] do
begin
for n:=1 to System.Length(FChar) do
begin
Result[Len]:=FChar[n];
Inc(Len);
end;
end;
end;
end;
procedure TColorstring.OverWritePW(S:TColorstring;PWS,Pos:Integer;PWC:String);
var i : Integer;
CPassWordStart:Integer;
begin
MinimumLength(Pos+S.Length,CLSilver,S.FDefaultBackGround);
CPassWordStart:=PWS;
for i:=0 to S.Length-1 do
begin
FChars[i+Pos]:=S.FChars[i];
if CPassWordStart<=0 then FChars[i+Pos].FChar:=PWC;
Dec(CPassWordStart);
end;
UpdateSum;
end;
procedure TColorstring.OverWrite(S:TColorstring;Pos:Integer);
var i : Integer;
begin
MinimumLength(Pos+S.Length,CLSilver,S.FDefaultBackGround);
for i:=0 to S.Length-1 do FChars[i+Pos]:=S.FChars[i];
UpdateSum;
end;
procedure TColorstring.PartOverWrite(S:TColorstring;Start,Ende,Pos:Integer);
var i : Integer;
begin
MinimumLength(Pos+Ende-Start,CLSilver,S.FDefaultBackGround);
for i:=0 to Ende-Start-1 do FChars[i+Pos]:=S.FChars[i+Start];
UpdateSum;
end;
procedure TColorstring.OverWrite(s:String;Pos:Integer;FC,BC:TColor);
var i,Pp,l : Integer;
begin
MinimumLength(Pos+UTF8Length(S),FC,BC);
Pp:=1;
for i:=0 to UTF8Length(S)-1 do
begin
l:=UTF8CharacterLength(@s[Pp]);
with FChars[i+Pos] do
begin
FChar := Copy(S,Pp,l);
FCharWidth := FFont.GetTextWidth(FChar);
FFrontColor := FC;
FBackColor := BC;
end;
Inc(Pp,l);
end;
UpdateSum;
end;
procedure TColorstring.OverWriteChar(s:TUTF8Char;Pos,ADefWidth:Integer;FC,BC:TColor);
begin
MinimumLength(Pos+1,FC,BC);
with FChars[Pos] do
begin
FChar := s;
FCharWidth := ADefWidth;
FFrontColor := FC;
FBackColor := BC;
end;
UpdateSum;
end;
procedure TColorstring.MinimumLength(V:Integer;FC,BC:TColor);
var OldLen,i:Integer;
begin
if System.Length(FChars)<V then
begin
OldLen:=System.Length(FChars);
SetLength(FChars,V);
for i:=OldLen to High(FChars) do
begin
with FChars[i] do
begin
FChar := ' ';
FCharWidth := FFont.GetTextWidth(' ');
FFrontColor := FC;
FBackColor := BC;
end;
end;
end;
end;
procedure TColorstring.MaximumLength(V:Integer);
begin
if System.Length(FChars)>V then SetLength(FChars,V);
end;
procedure TColorstring.Clear;
begin
FChars:=Nil;
end;
procedure TCmdBox.ClearLine;
begin
if FLines[FOutY].Length<>0 then
begin
FLines[FOutY].Clear;
FOutX:=0;
if FInput then FInputY:=FOutY;
Invalidate;
end;
end;
function TCmdBox.GetCaretInterval:Integer;
begin
Result:=FCaretTimer.Interval;
end;
procedure TCmdBox.SetCaretInterval(AValue:Integer);
begin
FCaretTimer.Interval:=AValue;
end;
procedure TCmdBox.MultiWrite;
var DoWrite:Boolean;
begin
System.EnterCriticalSection(FLock);
DoWrite:=FStringBuffer.Count<>0;
if DoWrite then
begin
FCurrentString:=FStringBuffer[0];
FStringBuffer.Delete(0);
end;
System.LeaveCriticalSection(FLock);
if DoWrite then IntWrite;
end;
procedure TCmdBox.Write(S:String);
begin
if ThreadID=MainThreadId then
begin
MultiWrite;
FCurrentString:=S;
IntWrite;
end
else
begin
System.EnterCriticalSection(FLock);
FStringBuffer.Add(S);
System.LeaveCriticalSection(FLock);
if Assigned(WakeMainThread) then TThread.Synchronize(Nil,@MultiWrite);
end;
end;
function TCmdBox.HistoryIndexOf(s:string):Integer;
begin
for Result:=0 to HistoryCount-1 do if History[Result]=s then Exit;
Result:=-1;
end;
function TCmdBox.HistoryHas(s:string):Boolean;
var i:Integer;
begin
Result := True;
for i:=0 to HistoryCount-1 do if History[i]=s then Exit;
Result := False;
end;
function TCmdBox.HistoryCount:Integer;
begin
HistoryCount:=FHistoryLength-Ord(FInput);
end;
function TCmdBox.GetHistory(i:Integer):string;
begin
Inc(i,Ord(FInput));
if (i>=0) and (i<FHistoryLength) then GetHistory:=FHistory[i].Getstring else GetHistory:='';
end;
procedure TCmdBox.EraseBackGround(DC:HDC);
begin
end;
procedure TCmdBox.ClearHistory;
begin
FHistoryLength := Ord(FInput);
FHistoryPos := 0;
end;
procedure TCmdBox.SetHistoryMax(v:Integer);
var i:Integer;
begin
if v<1 then v:=1;
if v<>FHistoryMax then
begin
if FHistoryLength>v then FHistoryLength:=v;
for i:=v to FHistoryMax-1 do FHistory[i].Free;
SetLength(FHistory,v);
for i:=FHistoryMax to v-1 do FHistory[i]:=TColorstring.Create(Canvas.Font);
FHistoryMax:=v;
end;
end;
procedure TCmdBox.WriteStream(Stream:TStream);
var c:wideString;
begin
while Stream.Position<Stream.Size do
begin
// Not very efficient, but should work...
Stream.Read(c,1);
Write(c);
end;
end;
procedure TCmdBox.LeftSelection(Start,Ende:Integer);
begin
if FSelStart=-1 then
begin
SetSelection(Start,Ende);
end
else
begin
if FSelStart=Start then SetSelection(-1,0) else
begin
if FSelStart<Start then
begin
SetSelection(FSelStart,Start);
end else SetSelection(Start,FSelEnd+1);
end;
end;
end;
procedure TCmdBox.RightSelection(Start,Ende:Integer);
begin
if FSelStart=-1 then
begin
SetSelection(Start,Ende);
end
else
begin
if FSelEnd+1=Ende then SetSelection(-1,0) else
begin
if FSelstart<Start then
begin
SetSelection(FSelStart,Ende);
end else SetSelection(Ende,FSelEnd+1);
end;
end;
end;
procedure TCmdBox.SetSelection(Start,Ende:Integer);
begin
if FSelStart<>-1 then FInputBuffer.ColorBlock(FSelStart,FSelEnd,FInputColor,FInputBackGround);
if Start=Ende then FSelStart:=-1 else
begin
if Start<Ende then
begin
FSelStart := Start;
FSelEnd := Ende-1;
end
else
begin
FSelStart := Ende;
FSelEnd := Start-1;
end;
end;
if FSelStart<>-1 then FInputBuffer.ColorBlock(FSelStart,FSelEnd,FInputSelColor,FInputSelBackGround);
end;
procedure TCmdBox.CopyToClipBoard;
begin
if FSelStart<>-1 then
begin
ClipBoard.AsText:=FInputBuffer.GetPartstring(FSelStart,FSelEnd);
end;
end;
procedure TCmdBox.PasteFromClipBoard;
var s:widestring;
l,Pp:Integer;
begin
if ClipBoard.HasFormat(CF_TEXT) then
begin
s := ClipBoard.AsText;
Pp := 1;
while pp<=Length(s) do
begin
l := UTF8CharacterLength(@S[Pp]);
if (l=1) and (Byte(S[Pp])<32) then Delete(s,Pp,1) else inc(Pp,l);
end;
FInputBuffer.Insert(InputPos,s,FInputColor,FInputBackGround);
Inc(InputPos,UTF8Length(s));
FCaretX:=FInputX+InputPos;
AdjustScrollBars;
MakeInputVisible;
FHistoryPos:=0;
if Assigned(FOnInputChange) then FOnInputChange(Self,FInputBuffer);
if Assigned(FOnAny) then FOnAny(Self,FInputBuffer);
end;
end;
procedure TCmdBox.DeleteSelected;
begin
if FSelStart<>-1 then
begin
FInputBuffer.Delete(FSelStart,FSelEnd-FSelStart+1);
FInputPos := FSelStart;
FCaretX := FInputX+FInputPos;
FSelStart := -1;
end;
end;
procedure TCmdBox.CutToClipBoard;
begin
if FSelStart<>-1 then
begin
ClipBoard.AsText:=FInputBuffer.GetPartstring(FSelStart,FSelEnd);
DeleteSelected;
end;
end;
procedure TCmdBox.MouseMove(Shift:TShiftState;x,y:Integer);
begin
if FMouseDown then
begin
if MoveInputCaretTo(x,y,false) then SetSelection(FMouseDownInputPos,FInputPos);
end;
end;
function TCmdBox.MoveInputCaretTo(x,y:Integer;chl:Boolean):Boolean;
var h,sl,q:Integer;
begin
if not FInput then Exit;
y := y div FCharHeight;
h := FLineHeightSum[FTopLine]+FLineOfTopLine+y;
sl := FTopLine;
while (sl<FLineCount-1) and (FLineHeightSum[sl+1]<=h) do inc(sl);
if (sl=FInputY) or (not chl) then
begin
Dec(h,FLineHeightSum[FInputY]);
q:=FInputBuffer.GetCharPosition(FClientWidth,h,x);
if (q<FInputMinPos) then q:=FInputMinPos;
if (q-FInputX>FInputBuffer.Length) then q:=FInputBuffer.Length-FInputX;
FCaretX := q;
FInputPos := FCaretX-FInputX;
if Assigned(FOnAny) then FOnAny(Self,FInputBuffer);
Invalidate;
Result:=True;
end else Result:=False;
end;
procedure TCmdBox.MouseDown(Button:TMouseButton;Shift:TShiftState;x,y:Integer);
begin
SetFocus;
MoveInputCaretTo(x,y,True);
FMouseDown:=True;
SetSelection(-1,0);
FMouseDownInputPos:=FInputPos;
Invalidate;
end;
procedure TCmdBox.MouseUp(Button:TMouseButton;Shift:TShiftState;x,y:Integer);
begin
FMouseDown:=False;
end;
destructor TColorstring.Destroy;
begin
Clear;
inherited Destroy;
end;
procedure TCmdBox.ScrollUp;
var n:Integer;
Firstwidestring : TColorstring;
begin
Firstwidestring:=FLines[0];
for n:=0 to Length(FLines)-2 do Flines[n] := FLines[n+1];
Firstwidestring.Clear;
Firstwidestring.FDefaultBackGround := FBackGroundColor;
Flines[High(Flines)]:=Firstwidestring;
end;
procedure TCmdBox.TextColors(FC,BC:TColor);
begin
FCurrentColor := FC;
FCurrentBackGround := BC;
end;
procedure TCmdBox.TextColor(C:TColor);
begin
FCurrentColor:=C;
end;
procedure TCmdBox.TextBackGround(C:TColor);
begin
FCurrentBackGround:=C;
end;
procedure TCmdBox.TranslateScrollBarPosition;
var GLine,Line : Integer;
He :Integer;
begin
if (FLineOfTopLine<FLineHeights[FTopLine]) and (FLineHeightSum[FTopLine]+FLineOfTopLine=FVSBPos) then exit;
UpdateLineHeights;
Line := 0;
GLine := 0;
He:=FLineHeights[Line];
while (Line<LineCount-1) and (Gline+He<=FVSBPos) do
begin
Inc(Line);
Inc(Gline,He);
He:=FLineHeights[Line];
end;
FTopLine := Line;
FLineOfTopLine := FVSBPos-GLine;
Invalidate;
end;
procedure TCmdBox.WMVScroll(var message: TLMVScroll);
var CurrentPos :Integer;
begin
CurrentPos:=FLineHeightSum[FTopLine]+FLineOfTopLine;
case message.ScrollCode of
SB_TOP: CurrentPos := 0;
SB_BOTTOM: CurrentPos := FVisibleLineCount-FPageHeight;
SB_LINEDOWN: Inc(CurrentPos);
SB_LINEUP: Dec(CurrentPos);
SB_PAGEDOWN: Inc(CurrentPos,FPageHeight);
SB_PAGEUP: Dec(CurrentPos,FPageHeight);
SB_THUMBPOSITION: CurrentPos := message.Pos;
SB_THUMBTRACK: CurrentPos := message.Pos;
SB_ENDSCROLL: Exit;
end;
if CurrentPos<0 then CurrentPos:=0 else if Currentpos>FVisibleLineCount-FPageHeight then CurrentPos:=FVisibleLineCount-FPageHeight;
{$IFNDEF LCLGTK}
ScrollBarPosition(SB_VERT, CurrentPos);
{$ENDIF}
FVSBPos:=CurrentPos;
TranslateScrollBarPosition;
end;
procedure TCmdBox.ScrollBarRange(Which: Integer; aRange,aPage: Integer);
var ScrollInfo: TScrollInfo;
begin
if HandleAllocated then
begin
FillChar(ScrollInfo, SizeOf(ScrollInfo), 0);
ScrollInfo.cbSize := SizeOf(ScrollInfo);
ScrollInfo.fMask := SIF_RANGE or SIF_PAGE or SIF_DISABLENOSCROLL;
// Dont't know, someone told me to kick it...so i did:P
// {$ifdef Unix}
{ ScrollInfo.fMask := ScrollInfo.fMask or SIF_UPDATEPOLICY;
if goThumbTracking in Options then
ScrollInfo.ntrackPos := SB_POLICY_CONTINUOUS
else
ScrollInfo.ntrackPos := SB_POLICY_DISCONTINUOUS;}
// {$endif}}
ScrollInfo.nMin := 0;
ScrollInfo.nMax := ARange;
if APage<0 then APage := 0;
ScrollInfo.nPage := APage;
SetScrollInfo(Handle, Which, ScrollInfo, True);
end;
end;
procedure TCmdBox.ScrollBarPosition(Which, Value: integer);
var ScrollInfo : TScrollInfo;
Vis : Boolean;
begin
if HandleAllocated then
begin
if Which = SB_VERT then Vis := FVSbVisible else
FillChar(ScrollInfo, SizeOf(ScrollInfo), 0);
ScrollInfo.cbSize := SizeOf(ScrollInfo);
ScrollInfo.fMask := SIF_POS;
ScrollInfo.nPos := Value;
SetScrollInfo(Handle, Which, ScrollInfo, Vis);
end;
end;
function TCmdBox.GetSystemMetricsGapSize(const Index:Integer):Integer;
begin
{$ifdef LCLWIN32}
result:=0;
{$else}
result:=3;
{$endif}
end;
procedure TCmdBox.SetBackGroundColor(c:TColor);
begin
if c<>FBackGroundColor then
begin
FBackGroundColor:=c;
Invalidate;
end;
end;
procedure TCmdBox.SetFont(F:TFont);
var DC : HDC;
Save : THandle;
Metrics : TTextMetric;
begin
FFont.Assign(F);
Canvas.Font := FFont;
DC := GetDC(0);
Save := SelectObject(DC,FFont.Handle);
GetTextMetrics(DC, Metrics);
SelectObject(DC, Save);
ReleaseDC(0, DC);
FCharHeight := Abs(Metrics.tmHeight)+2;
Invalidate;
end;
// Still a Bug: Try having a cmdline with more lines than fit on screen : update doesn't work anymore...
procedure TCmdBox.MakeInputVisible;
var y : Integer;
begin
if not FAutoFollow then Exit;
UpdateLineHeights;
y:=FLineHeightSum[FInputY]+FInputBuffer.GetLineOfCaret(FClientWidth,FCaretX,FCaretWidth);
if y>=FLineHeightSum[FTopLine]+FLineOfTopLine+FPageHeight then
begin
While y>=FLineHeightSum[FTopLine]+FLineHeights[FTopLine]+FPageHeight-1 do Inc(FTopLine);
FLineOfTopLine:=y-(FLineHeightSum[FTopLine]+FPageHeight)+1;
end
else if y<FLineHeightSum[FTopLine]+FLineOfTopLine then
begin
FLineOfTopLine:=0;
While y<FLineHeightSum[FTopLine] do Dec(FTopLine);
FLineOfTopLine:=y-FLineHeightSum[FTopLine];
end;
y:=FLineHeightSUm[FTopLine]+FLineOfTopLine;
if y<>FVSBPos then
begin
FVSBPos:=y;
if HandleAllocated then ScrollBarPosition(SB_Vert,y);
end;
end;
procedure TCmdBox.MakeOutVisible;
var y : Integer;
begin
if not FAutoFollow then Exit;
UpdateLineHeights;
y:=FLineHeightSum[FOutY]+FLines[FOutY].GetLineOfCaret(FClientWidth,FOutX,FCaretWidth);
if y>=FLineHeightSum[FTopLine]+FLineOfTopLine+FPageHeight then
begin
While y>=FLineHeightSum[FTopLine]+FLineHeights[FTopLine]+FPageHeight-1 do Inc(FTopLine);
FLineOfTopLine:=y-(FLineHeightSum[FTopLine]+FPageHeight)+1;
end
else if y<FLineHeightSum[FTopLine]+FLineOfTopLine then
begin
FLineOfTopLine:=0;
While y<FLineHeightSum[FTopLine] do Dec(FTopLine);
FLineOfTopLine:=y-FLineHeightSum[FTopLine];
end;
y:=FLineHeightSUm[FTopLine]+FLineOfTopLine;
if y<>FVSBPos then
begin
FVSBPos:=y;
if HandleAllocated then ScrollBarPosition(SB_Vert,y);
end;
end;
procedure TCmdBox.SetHistoryPos(v:Integer);
begin
if FInputIsPassWord then Exit;
if v<0 then v:=FHistoryLength-1 else if v>=FHistoryLength then v:=0;
if v<>FHistoryPos then
begin
if FHistoryPos=0 then
begin
FHistory[0].Clear;
FHistory[0].PartOverWrite(FInputBuffer,FInputMinPos,FInputBuffer.Length,0);
end;
FInputBuffer.MaximumLength(FInputMinPos+FHistory[v].Length);
FInputBuffer.OverWrite(FHistory[v],FInputMinPos);
if FInputPos>FInputBuffer.Length then
begin
FInputPos:=FInputBuffer.Length;
FCaretX:=FInputX+FInputPos;
end;
FHistoryPos:=v;
end;
if Assigned(FOnInputChange) then FOnInputChange(Self,FInputBuffer);
MakeInputVisible;
AdjustLineHeight(FInputY);
AdjustScrollBars;
Invalidate;
end;
procedure TCmdBox.UTF8KeyPress(var Key:TUTF8Char);
begin
if not FInput then Exit;
if key>=#32 then
begin
if FSelStart<>-1 then DeleteSelected;
FInputBuffer.Insert(FInputPos,key,FInputColor,FInputBackGround);
Inc(FInputPos);
FCaretX:=FInputX+FInputPos;
FHistoryPos:=0;
if assigned(FOnInputChange) then FOnInputChange(Self,FInputBuffer);
end;
if Assigned(OnAny) then OnAny(Self,FInputBuffer);
AdjustScrollBars;
MakeInputVisible;
If FInputVisible then Invalidate;
end;
procedure TCmdBox.KeyDown(var Key:Word;Shift:TShiftState);
var s : String;
i : Integer;
begin
if not FInput then Exit;
case Key of
VK_END:
begin
key:=0;
if (not (ssAlt in Shift)) and FInput and (FInputPos<>FInputBuffer.Length) then
begin
if not (ssShift in Shift) then SetSelection(-1,0) else RightSelection(FInputPos,FInputBuffer.Length);
FInputPos:=FInputBuffer.Length;
FCaretX:=FInputX+FInputPos;
MakeInputVisible;
Invalidate;
end;
end;
VK_HOME:
begin
key:=0;
if (not (ssAlt in Shift)) and FInput and (FInputPos<>FInputMinPos) then
begin
if not (ssShift in Shift) then SetSelection(-1,0) else LeftSelection(FInputMinPos,FInputPos);
FInputPos:=FInputMinPos;
FCaretX:=FInputX+FInputPos;
MakeInputVisible;
Invalidate;
end;
end;
VK_LEFT:
begin
if (not (ssAlt in Shift)) and (FInput and (FInputPos>FInputMinPos)) then
begin
if not (ssShift in Shift) then SetSelection(-1,0) else LeftSelection(FInputPos-1,FInputPos);
Dec(FInputPos);
FCaretX:=FInputX+FInputPos;
MakeInputVisible;
Invalidate;
end;
end;
VK_UP:
begin
if (not (ssAlt in Shift)) and FInput then
begin
SetSelection(-1,0);
SetHistoryPos(FHistoryPos+1);
end;
end;
VK_DOWN:
begin
if (not (ssAlt in Shift)) and FInput then
begin
SetSelection(-1,0);
SetHistoryPos(FHistoryPos-1);
end;
end;
VK_RIGHT:
begin
if (not (ssAlt in Shift)) and FInput and (FInputPos<FInputBuffer.Length) then
begin
if not (ssShift in Shift) then SetSelection(-1,0) else RightSelection(FInputPos,FInputPos+1);
Inc(FInputPos);
FCaretX:=FInputX+FInputPos;
MakeInputVisible;
Invalidate;
end;
end;
VK_DELETE:
begin
if FInput then
begin
if FSelStart<>-1 then DeleteSelected else FInputBuffer.Delete(FInputPos);
FHistoryPos:=0;
if assigned(FOnInputChange) then FOnInputChange(Self,FInputBuffer);
MakeInputVisible;
AdjustLineHeight(FInputY);
AdjustScrollBars;
end;
end;
VK_RETURN:
begin
if FInput then
begin
s := FInputBuffer.GetString;
s := Copy(s,FUTF8InputMinPos+1,Length(s));
if (FHistoryPos=0) then
begin
if (FInputBuffer.Length=FInputMinPos) or FInputIsPassWord then
begin
DeleteHistoryEntry(0);
end
else
begin
i:=HistoryIndexOf(s);
if i>=0 then
begin
DeleteHistoryEntry(0);
MakeFirstHistoryEntry(i);
end
else
begin
FHistory[0].Clear;
FHistory[0].PartOverWrite(FInputBuffer,FInputMinPos,FInputBuffer.Length,0);
end;
end;
end
else
begin
DeleteHistoryEntry(0);
MakeFirstHistoryEntry(FHistoryPos);
end;
FInput := False;
if FLines[FOutY].Length<>0 then
begin
if FOutY>=FLineCount-1 then
begin
ScrollUp;
Dec(FOutY);
FInputY:=FOutY;
AdjustLineHeight(FOutY);
UpdateLineHeights;
TranslateScrollBarPosition;
end;
FLines[FOutY+1].Clear;
FLines[FOutY+1].OverWrite(FLines[FOutY],0);
FLines[FOutY].Clear;
if FInputIsPassWord then
FLines[FOutY].OverWritePW(FInputBuffer,FInputMinPos,FInputX,FPassWordChar)
else FLines[FOutY].OverWrite(FInputBuffer,FInputX);
end
else
begin
if FInputIsPassWord then
FLines[FOutY].OverWritePW(FInputBuffer,FInputMinPos,FInputX,FPassWordChar)
else FLines[FOutY].OverWrite(FInputBuffer,FInputX);
end;
Inc(FOutY);
if FOutY>=FLineCount then
begin
ScrollUp;
Dec(FOutY);
FInputY:=FOutY;
AdjustLineHeight(FOutY);
UpdateLineHeights;
TranslateScrollBarPosition;
end;
FOutX := 0;
FCaretX := 0;
FInputBuffer.Clear;
if Assigned(OnInput) then OnInput(Self,s);
if Assigned(OnAny) then OnAny(Self,FInputBuffer);
AdjustScrollBars;
Invalidate;
end;
end;
VK_BACK:
begin
if FInput then
begin
if FSelStart<>-1 then DeleteSelected else
begin
If (FInputPos>FInputMinPos) then
begin
Dec(FInputPos);
FInputBuffer.Delete(FInputPos);
FCaretX:=FInputX+FInputPos;
end;
end;
FHistoryPos:=0;
if assigned(FOnInputChange) then FOnInputChange(Self,FInputBuffer);
if Assigned(OnAny) then OnAny(Self,FInputBuffer);
AdjustScrollBars;
MakeInputVisible;
If FInputVisible then Invalidate;
end;
end;
VK_C:
begin
if (FInput) and (ssCtrl in Shift) then CopyToClipBoard;
end;
VK_V:
begin
if (FInput) and (ssCtrl in Shift) then PasteFromClipBoard;
end;
VK_X:
begin
if (FInput) and (ssCtrl in Shift) then CutToClipBoard;
end;
VK_A:
begin
if (FInput) and (ssCtrl in Shift) then
begin
SetSelection(FInputMinPos,FInputBuffer.Length);
FInputPos:=FInputBuffer.Length;
MakeInputVisible;
if FInputVisible then Invalidate;
end;
end;
end;
if Assigned(OnAny) then OnAny(Self,FInputBuffer);
end;
procedure TCmdBox.InsertHistory;
var i : Integer;
t : TColorstring;
begin
t:=FHistory[FHistoryMax-1];
for i:=FHistoryMax-2 downto 0 do
begin
FHistory[i+1]:=FHistory[i];
end;
FHistory[0] := t;
FHistoryPos := 0;
If FHistoryLength<FHistoryMax then Inc(FHistoryLength);
end;
procedure TCmdBox.StartRead(DFC,DBC:TColor;const Desc:String;IFC,IBC:TColor);
var Pp,i,l:Integer;
begin
Inc(FCaretX,UTF8Length(Desc));
FInputX := FOutX;
if FLines[FOutY].Length=0 then FInputY := FOutY else FInputY:=FOutY+1;
FInputVisible := True;
FInput := True;
FUTF8InputMinPos := Length(Desc);
i:=0;
Pp:=1;
while Pp<=Length(Desc) do
begin
if Desc[Pp]=#27 then
begin
if Pp+1>Length(Desc) then Break;
case Desc[Pp+1] of
#9,#10,#32,#46,#196:
begin
if Pp+2>Length(Desc) then Break; //Incomplete Escape Seq...ignore
l:=3;
end;
#33,#47,#197:
begin
if Pp+3>Length(Desc) then Break; //Incomplete Escape Seq...ignore
l:=4;
end;
else
begin
l:=2;
end;
end;
end else l:=UTF8CharacterLength(@Desc[PP]);
FInputBuffer.OverWriteChar(Copy(Desc,Pp,l),i,FGraphicCharWidth,DFC,DBC);
Inc(i);
Inc(Pp,l);
end;
FInputPos := i;
FInputMinPos := i;
// FInputBuffer.OverWrite(Desc,0,DFC,DBC);
FInputIsPassWord := False;
FInputColor := IFC;
FInputBackground := IBC;
FInputBuffer.PassWordStart:=MaxInt;
InsertHistory;
MakeInputVisible;
end;
procedure TCmdBox.StartReadPassWord(DFC,DBC:TColor;const Desc:string;IFC,IBC:TColor);
begin
StartRead(DFC,DBC,Desc,IFC,IBC);
FInputBuffer.PassWordStart := UTF8Length(Desc);
FInputBuffer.PassWordChar := FPassWordChar;
FInputIsPassWord := True;
end;
procedure TCmdBox.StopRead;
begin
FInput:=False;
end;
procedure TCmdBox.DeleteHistoryEntry(i:Integer);
var j:Integer;
Temp:TColorstring;
begin
Temp:=FHistory[i];
for j:=i to FHistoryLength-2 do FHistory[j]:=FHistory[j+1];
FHistory[FHistoryLength-1]:=Temp;
Dec(FHistoryLength);
if FHistoryPos>=i then Dec(FHistoryPos);
end;
procedure TCmdBox.MakeFirstHistoryEntry(i:Integer);
var Temp:TColorstring;
begin
if FHistoryPos<>0 then
begin
Temp:=FHistory[i];
for i:=i-1 downto 0 do FHistory[i+1]:=FHistory[i];
FHistory[0]:=Temp;
end;
end;
procedure TCmdBox.Clear;
var i:Integer;
begin
for i:=0 to Length(FLines)-1 do Flines[i].Clear;
FCaretX := 0;
FInputY := 0;
FOutX := 0;
FOutY := 0;
if FInput then FInputY:=0;
Invalidate;
end;
procedure TCmdBox.Writeln(s:string);
begin
write(s+#13#10);
end;
const AnsiColors:array['0'..'7'] of TColor=(clBlack,clRed,clGreen,clYellow,clBlue,clFuchsia,clAqua,clWhite);
procedure TCmdBox.IntWrite;
var Pp : Integer;
SLen : Integer;
l : Integer;
s : String;
EscString : String;
EscPos : Integer;
EscSubMode : Integer;
begin
S := FCurrentString;
SLen := UTF8Length(S);
Pp := 1;
while Pp<=Length(S) do
begin
l:=1;
case FEscapeMode of
escmNone:
begin
if S[Pp]=#27 then
begin
case FEscapeCodeType of
esctCmdBox:
begin
FEscapeMode := escmOperation;
FEscapeData := '';
end;
esctAnsi:
begin
FEscapeMode := escmAnsiOperation;
FEscapeData := '';
end;
esctNone:
begin
// Simply ignore it
end;
end;
end
else
begin
l:=UTF8CharacterLength(@S[Pp]);
if l=1 then
begin
case s[Pp] of
#13:FOutX:=0;
#10:
begin
AdjustLineHeight(FOutY);
if FLines[FOutY].Length=0 then FLines[FOutY].DefaultBackGround:=FCurrentBackGround;
Inc(FOutY);
if FOutY>=Length(FLines) then
begin
ScrollUp;
Dec(FOutY);
AdjustLineHeight(FOutY);
UpdateLineHeights;
TranslateScrollBarPosition;
end;
end;
else
begin
FLines[FOutY].OverWrite(s[Pp],FOutX,FCurrentColor,FCurrentBackGround);
Inc(FOutX);
end;
end;
end
else
begin
FLines[FOutY].OverWrite(Copy(s,Pp,l),FOutX,FCurrentColor,FCurrentBackGround);
Inc(FOutX);
end;
end;
end;
escmOperation:
begin
case S[Pp] of
#9,#10,#32,#46,#196:
begin
FEscapeData := S[Pp];
FEscapeMode := escmData1;
end;
#33,#47,#197:
begin
FEscapeData := S[Pp];
FEscapeMode := escmData2;
end;
else
begin
FLines[FOutY].OverWriteChar(#27+S[Pp],FOutX,FGraphicCharWidth,FCurrentColor,FCurrentBackGround);
Inc(FOutX);
FEscapeMode:=escmNone;
end;
end;
end;
escmData1:
begin
FLines[FOutY].OverWriteChar(#27+FEscapeData+S[Pp],FOutX,FGraphicCharWidth,FCurrentColor,FCurrentBackGround);
Inc(FOutX);
FEscapeMode:=escmNone;
end;
escmData2:
begin
FEscapeData := FEscapeData+S[Pp];
FEscapeMode := escmData1;
end;
escmAnsiOperation:
begin
case S[Pp] of
'[':FEscapeMode:=escmAnsiSquare;
else FEscapeMode:=escmNone;
end;
end;
escmAnsiSquare:
begin
case S[Pp] of
'm':
begin
EscPos := 1;
EscSubMode := 0;
while EscPos<=Length(FEscapeData) do
begin
case EscSubMode of
0:
begin
case FEscapeData[EscPos] of
'0':
begin
// No Reset Values know here...just assume
FCurrentColor:=clSilver;
FCurrentBackGround:=clBlack;
end;
'7':
begin
// Reverse? What now...
end;
'3':EscSubMode:=3;
'4':EscSubMode:=4;
end;
end;
1:
begin
// Just collect the expected ";", not sure what to do if it isn't there...
EscSubMode:=0;
end;
3:
begin
if FEscapeData[EscPos] in ['0'..'7'] then FCurrentColor:=AnsiColors[FEscapeData[EscPos]];
EscSubMode:=1;
end;
4:
begin
if FEscapeData[EscPos] in ['0'..'7'] then FCurrentBackGround:=AnsiColors[FEscapeData[EscPos]];
EscSubMode:=1;
end;
end;
Inc(EscPos);
end;
FEscapeMode:=escmNone;
end;
else
begin
FEscapeData:=FEscapeData+S[Pp];
end;
end;
end;
end;
Inc(Pp,l);
end;
if FInput then
begin
if FLines[FOutY].Length=0 then
begin
if (FInputY<>FOutY) then FInputY:=FOutY;
end
else
begin
if FInputY<>FOutY+1 then FInputY:=FOutY+1;
end;
if FInputY>=FLineCount then
begin
ScrollUp;
Dec(FOutY);
Dec(FInputY);
FInputY:=FOutY;
AdjustLineHeight(FOutY);
UpdateLineHeights;
TranslateScrollBarPosition;
end;
MakeInputVisible;
end else MakeOutVisible;
AdjustLineHeight(FOutY);
if not FInput then FCaretX:=FOutX;
AdjustScrollBars;
end;
procedure TCmdBox.SetOutY(v:Integer);
begin
if v>FLineCount-1 then v:=FLineCount-1;
FOutY:=v;
end;
procedure TCmdBox.Resize;
begin
inherited Resize;
AdjustScrollBars;
if FVSBPos>=FVisibleLineCount-FPageHeight then
begin
FVSBPos:=FVisibleLineCount-FPageHeight;
if FVSBPos<0 then FVSBPos:=0;
end;
TranslateScrollBarPosition;
end;
function TCmdBox.AdjustLineHeight(i:Integer):Integer;
var LineC : Integer;
LineC2 : Integer;
begin
if (FInputY=i) then
begin
LineC := FLines[i].LineCount(FClientWidth,-1,FCaretWidth);
LineC2 := FInputBuffer.LineCount(FClientWidth,FCaretX,FCaretWidth);
if LineC2>LineC then LineC:=LineC2;
end else LineC:=FLines[i].LineCount(FClientWidth,-1,FCaretWidth);
Result := LineC;
FLineHeights[i] := Result;
end;
function TCmdBox.UpdateLineHeights:integer;
var i:integer;
begin
Result:=0;
for i:=0 to FLineCount-1 do
begin
FLineHeightSum[i]:=Result;
Inc(Result,AdjustLineHeight(i));
end;
end;
procedure TCmdBox.AdjustScrollBars;
var LH : Integer;
begin
FClientWidth := Width-FVSBWidth;
FClientHeight := Height;
FPageHeight := FClientHeight div FCharHeight;
FVisibleLines := FPageHeight+ord(FClientHeight mod FCharHeight<>0);
LH := UpdateLineHeights;
if LH<>FVisibleLineCount then
begin
FVisibleLineCount:=LH;
if FVisibleLineCount<=FVSBPos+FPageHeight then
begin
FVSBPos:=FVisibleLineCount-FPageHeight;
if FVSBPos<0 then FVSBPos:=0;
if HandleAllocated then ScrollBarPosition(SB_Vert,FVSBPos);
TranslateScrollBarPosition;
end;
end;
if FVisibleLineCount<FPageHeight then
begin
if HandleAllocated then
begin
ScrollBarPosition(SB_VERT,0);
ScrollBarRange(SB_VERT,0,FPageHeight);
ShowScrollBar(Handle,SB_VERT,True); { Disable the Scrollbar ! }
end;
end
else
begin
if HandleAllocated then
begin
ScrollBarRange(SB_VERT,FVisibleLineCount,FPageHeight);
ShowScrollBar(Handle,SB_VERT,True);
end;
end;
Invalidate;
end;
procedure TCmdBox.SetTopLine(Nr:Integer);
begin
if Nr<>FTopLine then
begin
FTopLine:=Nr;
AdjustScrollBars;
end;
end;
procedure TCmdBox.SetLineCount(c: Integer);
var i:Integer;
begin
if c<1 then c:=1;
if c<>FLineCount then
begin
for i:=0 to FLineCount-1 do FLines[i].Free;
FLineCount:=c;
SetLength(FLines,FLinecount);
for i:=0 to FlineCount-1 do
begin
FLines[i]:=TColorstring.Create(Canvas.Font);
FLines[i].DefaultBackGround:=FBackGroundColor;
FLines[i].TabWidth:=FTabWidth;
end;
SetLength(FLineHeights,FLineCount);
SetLength(FLineHeightSum,FLineCount);
AdjustScrollBars;
end;
end;
procedure TCmdBox.Paint;
Var y,m : Integer;
CurrentLine : Integer;
begin
inherited Paint;
with canvas do
begin
if (csdesigning in componentstate) then
begin
Brush.Style := bsSolid;
Brush.Color := clBlack;
FillRect(0,0,FClientWidth,FClientHeight);
exit;
end;
Font := FFont;
Brush.Style := bsSolid;
m := FVisibleLines-1;
y := -FLineOfTopLine;
CurrentLine := FTopLine;
while (y<=m) and (CurrentLine<LineCount) do
begin
FLines[CurrentLine].LineOutAndFill(Canvas,0,y*FCharHeight,0,FClientWidth,FCharHeight,FGraphicCharWidth,-1,FBackGroundColor,FCaretColor,FCaretHeight,FCaretWidth,FCaretYShift,False);
if (FInput) and (FInputY=CurrentLine) then
begin
if FInputIsPassWord then
begin
FInputBuffer.LineOutAndFill(Canvas,0,y*FCharHeight,0,FClientWidth,FCharHeight,FGraphicCharWidth,FCaretX,FBackGroundColor,FCaretColor,FCaretHeight,FCaretWidth,FCaretYShift,FCaretVisible and Focused);
end
else
begin
FInputBuffer.LineOutAndFill(Canvas,0,y*FCharHeight,0,FClientWidth,FCharHeight,FGraphicCharWidth,FCaretX,FBackGroundColor,FCaretColor,FCaretHeight,FCaretWidth,FCaretYShift,FCaretVisible and Focused);
end;
end;
Inc(y,FLineHeights[CurrentLine]);
Inc(CurrentLine);
end;
y:=y*FCharHeight;
if y<FClientHeight then
begin
Brush.Color := FBackGroundColor;
Brush.Style := bsSolid;
FillRect(0,y,FClientWidth,FClientHeight);
end;
end;
end;
procedure TCmdBox.CaretTimerExecute(Sender:TObject);
begin
if Focused then
begin
if not Assigned(WakeMainThread) then MultiWrite;
FCaretVisible:=not FCaretVisible;
Invalidate;
end;
end;
procedure TCmdBox.CreateWnd;
begin
inherited CreateWnd;
FVSBWidth := GetSystemMetrics(SM_CXVSCROLL) + GetSystemMetricsGapSize(SM_CXVSCROLL);
SetFont(FFont);
if FCaretHeight=-1 then FCaretHeight := FFont.GetTextHeight('A')-3;
{ Little Hack to prevent "grey bar" Scrollbar at StartUp }
ShowScrollBar(Handle,SB_VERT,False);
ShowScrollBar(Handle,SB_VERT,True);
AdjustScrollBars;
end;
procedure TCmdBox.CreateParams(var Params:TCreateParams);
const ClassStylesOff = CS_VREDRAW or CS_HREDRAW;
begin
inherited CreateParams(Params);
with Params do
begin
WindowClass.Style:=WIndowClass.Style and DWORD(not ClassStylesOff);
Style := Style or WS_VSCROLL or WS_HSCROLL or WS_CLIPCHILDREN;
end;
end;
constructor TCmdBox.Create(AComponent:TComponent);
var i:integer;
begin
inherited Create(AComponent);
System.InitCriticalSection(FLock);
FStringBuffer := TStringList.Create;
FCharHeight := 15; // Just a random value to prevent stupid exceptions
FSelStart := -1;
FLineCount := 1000;
FInputVisible := False;
FBackGroundColor := clBlack;
FGraphicCharWidth := 10;
FInputBuffer := TColorstring.Create(Canvas.Font);
FEscapeCodeType := esctCmdBox;
FAutoFollow := True;
SetLength(FLines,FLineCount);
SetLength(FLineHeights,FLineCount);
SetLength(FLineHeightSum,FLineCount);
FTabWidth := 60;
for i:=0 to FLineCount-1 do
begin
FLines[i] := TColorstring.Create(Canvas.Font);
FLines[i].DefaultBackGround := FBackGroundColor;
FLines[i].TabWidth := FTabWidth;
end;
FCaretTimer := TTimer.Create(self);
FCaretTimer.Interval := 500;
FCaretTimer.OnTimer := @carettimerexecute;
FCaretTimer.Enabled := True;
FCaretVisible := True;
FVSBVisible := True;
FFont := Canvas.Font;
FCurrentColor := clSilver;
FCurrentBackground := clBlack;
DoubleBuffered := True;
FFont.Color := ClSilver;
FCaretColor := clWhite;
FCaretType := cartLine;
FCaretWidth := 1;
FCaretHeight := -1;
FCaretYShift := 3;
FInputSelBackground := clWhite;
FInputSelColor := clBlue;
FHistoryMax := 10;
FHistoryLength := 0;
SetBounds(0,0,200,200);
SetLength(FHistory,FHistoryMax);
for i:=0 to FHistoryMax-1 do FHistory[i]:=TColorstring.Create(Canvas.Font);
end;
destructor TCmdBox.Destroy;
begin
FCaretTimer.Enabled := False;
System.DoneCriticalSection(FLock);
FStringBuffer.Free;
inherited Destroy;
end;
procedure Register;
begin
RegisterComponents('Other',[TCmdBox]);
end;
initialization
{$I tcmdbox.lrs}
end.