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drivers.pas
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drivers.pas
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{********[ SOURCE FILE OF GRAPHICAL FREE VISION ]**********}
{ }
{ System independent clone of DRIVERS.PAS }
{ }
{ Interface Copyright (c) 1992 Borland International }
{ }
{ Copyright (c) 1996, 1997, 1998, 1999, 2000 }
{ by Leon de Boer }
{ [email protected] - primary e-mail addr }
{ [email protected] - backup e-mail addr }
{ }
{ Original FormatStr kindly donated by Marco Schmidt }
{ }
{ Mouse callback hook under FPC with kind assistance of }
{ Pierre Muller, Gertjan Schouten & Florian Klaempfl. }
{ }
{****************[ THIS CODE IS FREEWARE ]*****************}
{ }
{ This sourcecode is released for the purpose to }
{ promote the pascal language on all platforms. You may }
{ redistribute it and/or modify with the following }
{ DISCLAIMER. }
{ }
{ This SOURCE CODE is distributed "AS IS" WITHOUT }
{ WARRANTIES AS TO PERFORMANCE OF MERCHANTABILITY OR }
{ ANY OTHER WARRANTIES WHETHER EXPRESSED OR IMPLIED. }
{ }
{*****************[ SUPPORTED PLATFORMS ]******************}
{ }
{ Only Free Pascal Compiler supported }
{ }
{**********************************************************}
UNIT Drivers;
{<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>}
INTERFACE
{<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>}
{====Include file to sort compiler platform out =====================}
{$I platform.inc}
{====================================================================}
{==== Compiler directives ===========================================}
{$X+} { Extended syntax is ok }
{$R-} { Disable range checking }
{$IFNDEF OS_UNIX}
{$S-} { Disable Stack Checking }
{$ENDIF}
{$I-} { Disable IO Checking }
{$Q-} { Disable Overflow Checking }
{$V-} { Turn off strict VAR strings }
{====================================================================}
{$ifdef CPU68K}
{$DEFINE ENDIAN_BIG}
{$endif CPU68K}
{$ifdef FPC}
{$INLINE ON}
{$endif}
USES
sysutils,
//lazutf8,
{$IFDEF OS_WINDOWS} { WIN/NT CODE }
Windows, { Standard unit }
{$ENDIF}
{$ifdef OS_DOS}
Dos,
{$endif OS_DOS}
{$IFDEF OS_OS2} { OS2 CODE }
{$IFDEF PPC_Virtual} { VIRTUAL PASCAL UNITS }
OS2Def, OS2Base, OS2PMAPI, { Standard units }
{$ENDIF}
{$IFDEF PPC_Speed} { SPEED PASCAL UNITS }
BseDos, Os2Def, { Standard units }
{$ENDIF}
{$IFDEF PPC_FPC} { FPC UNITS }
DosCalls, Os2Def, { Standard units }
{$ENDIF}
{$ENDIF}
{$IFDEF OS_UNIX}
unixtype,baseunix,unix,
{$ENDIF}
{$IFDEF OS_NETWARE_LIBC}
libc,
{$ENDIF}
{$IFDEF OS_NETWARE_CLIB}
nwserv,
{$ENDIF}
{$IFDEF OS_AMIGA}
dos, amigados,
{$ENDIF}
video,
SysMsg,
FVCommon, Objects; { GFV standard units }
TYPE TInt64Array = array [0..4096] of Int64;
{***************************************************************************}
{ PUBLIC CONSTANTS }
{***************************************************************************}
{---------------------------------------------------------------------------}
{ EVENT TYPE MASKS }
{---------------------------------------------------------------------------}
CONST
evMouseDown = $0001; { Mouse down event }
evMouseUp = $0002; { Mouse up event }
evMouseMove = $0004; { Mouse move event }
evMouseAuto = $0008; { Mouse auto event }
evKeyDown = $0010; { Key down event }
evCommand = $0100; { Command event }
evBroadcast = $0200; { Broadcast event }
{---------------------------------------------------------------------------}
{ EVENT CODE MASKS }
{---------------------------------------------------------------------------}
CONST
evNothing = $0000; { Empty event }
evMouse = $000F; { Mouse event }
evKeyboard = $0010; { Keyboard event }
evMessage = $FF00; { Message event }
{---------------------------------------------------------------------------}
{ EXTENDED KEY CODES }
{---------------------------------------------------------------------------}
CONST
kbNoKey = $0000; kbAltEsc = $0100; kbEsc = $011B;
kbAltSpace = $0200; kbCtrlIns = $0400; kbShiftIns = $0500;
kbCtrlDel = $0600; kbShiftDel = $0700; kbAltBack = $0800;
kbAltShiftBack= $0900; kbBack = $0E08; kbCtrlBack = $0E7F;
kbShiftTab = $0F00; kbTab = $0F09; kbAltQ = $1000;
kbCtrlQ = $1011; kbAltW = $1100; kbCtrlW = $1117;
kbAltE = $1200; kbCtrlE = $1205; kbAltR = $1300;
kbCtrlR = $1312; kbAltT = $1400; kbCtrlT = $1414;
kbAltY = $1500; kbCtrlY = $1519; kbAltU = $1600;
kbCtrlU = $1615; kbAltI = $1700; kbCtrlI = $1709;
kbAltO = $1800; kbCtrlO = $180F; kbAltP = $1900;
kbCtrlP = $1910; kbAltLftBrack = $1A00; kbAltRgtBrack = $1B00;
kbCtrlEnter = $1C0A; kbEnter = $1C0D; kbAltA = $1E00;
kbCtrlA = $1E01; kbAltS = $1F00; kbCtrlS = $1F13;
kbAltD = $2000; kbCtrlD = $2004; kbAltF = $2100;
kbCtrlF = $2106; kbAltG = $2200; kbCtrlG = $2207;
kbAltH = $2300; kbCtrlH = $2308; kbAltJ = $2400;
kbCtrlJ = $240A; kbAltK = $2500; kbCtrlK = $250B;
kbAltL = $2600; kbCtrlL = $260C; kbAltSemiCol = $2700;
kbAltQuote = $2800; kbAltOpQuote = $2900; kbAltBkSlash = $2B00;
kbAltZ = $2C00; kbCtrlZ = $2C1A; kbAltX = $2D00;
kbCtrlX = $2D18; kbAltC = $2E00; kbCtrlC = $2E03;
kbAltV = $2F00; kbCtrlV = $2F16; kbAltB = $3000;
kbCtrlB = $3002; kbAltN = $3100; kbCtrlN = $310E;
kbAltM = $3200; kbCtrlM = $320D; kbAltComma = $3300;
kbAltPeriod = $3400; kbAltSlash = $3500; kbAltGreyAst = $3700;
kbSpaceBar = $3920; kbF1 = $3B00; kbF2 = $3C00;
kbF3 = $3D00; kbF4 = $3E00; kbF5 = $3F00;
kbF6 = $4000; kbF7 = $4100; kbF8 = $4200;
kbF9 = $4300; kbF10 = $4400; kbHome = $4700;
kbUp = $4800; kbPgUp = $4900; kbGrayMinus = $4A2D;
kbLeft = $4B00; kbCenter = $4C00; kbRight = $4D00;
kbAltGrayPlus = $4E00; kbGrayPlus = $4E2B; kbEnd = $4F00;
kbDown = $5000; kbPgDn = $5100; kbIns = $5200;
kbDel = $5300; kbShiftF1 = $5400; kbShiftF2 = $5500;
kbShiftF3 = $5600; kbShiftF4 = $5700; kbShiftF5 = $5800;
kbShiftF6 = $5900; kbShiftF7 = $5A00; kbShiftF8 = $5B00;
kbShiftF9 = $5C00; kbShiftF10 = $5D00; kbCtrlF1 = $5E00;
kbCtrlF2 = $5F00; kbCtrlF3 = $6000; kbCtrlF4 = $6100;
kbCtrlF5 = $6200; kbCtrlF6 = $6300; kbCtrlF7 = $6400;
kbCtrlF8 = $6500; kbCtrlF9 = $6600; kbCtrlF10 = $6700;
kbAltF1 = $6800; kbAltF2 = $6900; kbAltF3 = $6A00;
kbAltF4 = $6B00; kbAltF5 = $6C00; kbAltF6 = $6D00;
kbAltF7 = $6E00; kbAltF8 = $6F00; kbAltF9 = $7000;
kbAltF10 = $7100; kbCtrlPrtSc = $7200; kbCtrlLeft = $7300;
kbCtrlRight = $7400; kbCtrlEnd = $7500; kbCtrlPgDn = $7600;
kbCtrlHome = $7700; kbAlt1 = $7800; kbAlt2 = $7900;
kbAlt3 = $7A00; kbAlt4 = $7B00; kbAlt5 = $7C00;
kbAlt6 = $7D00; kbAlt7 = $7E00; kbAlt8 = $7F00;
kbAlt9 = $8000; kbAlt0 = $8100; kbAltMinus = $8200;
kbAltEqual = $8300; kbCtrlPgUp = $8400; kbF11 = $8500;
kbF12 = $8600; kbShiftF11 = $8700; kbShiftF12 = $8800;
kbCtrlF11 = $8900; kbCtrlF12 = $8A00; kbAltF11 = $8B00;
kbAltF12 = $8C00; kbCtrlUp = $8D00; kbCtrlMinus = $8E00;
kbCtrlCenter = $8F00; kbCtrlGreyPlus= $9000; kbCtrlDown = $9100;
kbCtrlTab = $9400; kbAltHome = $9700; kbAltUp = $9800;
kbAltPgUp = $9900; kbAltLeft = $9B00; kbAltRight = $9D00;
kbAltEnd = $9F00; kbAltDown = $A000; kbAltPgDn = $A100;
kbAltIns = $A200; kbAltDel = $A300; kbAltTab = $A500;
{ ------------------------------- REMARK ------------------------------ }
{ New keys not initially defined by Borland in their unit interface. }
{ ------------------------------ END REMARK --- Leon de Boer, 15May96 - }
kbFullStop = $342E; kbComma = $332C; kbBackSlash = $352F;
kbApostrophe = $2827; kbSemiColon = $273B; kbEqual = $0D3D;
kbGreaterThan = $343E; kbLessThan = $333C; kbQuestion = $353F;
kbQuote = $2822; kbColon = $273A; kbPlus = $0D2B;
kbPipe = $2B7C; kbSlash = $2B5C; kbExclaim = $0221;
kbAt = $0340; kbNumber = $0423; kbPercent = $0625;
kbCaret = $075E; kbAmpersand = $0826; kbAsterix = $092A;
kbLeftBracket = $0A28; kbRightBracket= $0B29; kbApprox = $2960;
kbTilde = $297E; kbDollar = $0524; kbMinus = $0C2D;
kbUnderline = $0C5F; kbLeftSqBr = $1A5B; kbRightSqBr = $1B5D;
kbLeftCurlyBr = $1A7B; kbRightCurlyBr= $1B7D;
{---------------------------------------------------------------------------}
{ KEYBOARD STATE AND SHIFT MASKS }
{---------------------------------------------------------------------------}
CONST
kbRightShift = $0001; { Right shift key }
kbLeftShift = $0002; { Left shift key }
kbCtrlShift = $0004; { Control key down }
kbAltShift = $0008; { Alt key down }
kbScrollState = $0010; { Scroll lock on }
kbNumState = $0020; { Number lock on }
kbCapsState = $0040; { Caps lock on }
kbInsState = $0080; { Insert mode on }
kbBothShifts = kbRightShift + kbLeftShift; { Right & Left shifts }
{---------------------------------------------------------------------------}
{ MOUSE BUTTON STATE MASKS }
{---------------------------------------------------------------------------}
CONST
mbLeftButton = $01; { Left mouse button }
mbRightButton = $02; { Right mouse button }
mbMiddleButton = $04; { Middle mouse button }
{---------------------------------------------------------------------------}
{ SCREEN CRT MODE CONSTANTS }
{---------------------------------------------------------------------------}
CONST
smBW80 = $0002; { Black and white }
smCO80 = $0003; { Colour mode }
smMono = $0007; { Monochrome mode }
smFont8x8 = $0100; { 8x8 font mode }
{***************************************************************************}
{ PUBLIC TYPE DEFINITIONS }
{***************************************************************************}
{ ******************************* REMARK ****************************** }
{ The TEvent definition is completely compatable with all existing }
{ code but adds two new fields ID and Data into the message record }
{ which helps with WIN/NT and OS2 message processing. }
{ ****************************** END REMARK *** Leon de Boer, 11Sep97 * }
{---------------------------------------------------------------------------}
{ EVENT RECORD DEFINITION }
{---------------------------------------------------------------------------}
TYPE
TEvent =
{$ifndef FPC_REQUIRES_PROPER_ALIGNMENT}
PACKED
{$endif FPC_REQUIRES_PROPER_ALIGNMENT}
RECORD
What: Sw_Word; { Event type }
Case Sw_Word Of
evNothing: (); { ** NO EVENT ** }
evMouse: (
Buttons: Byte; { Mouse buttons }
Double: Boolean; { Double click state }
Where: TPoint); { Mouse position }
evKeyDown: (
{ ** KEY EVENT ** }
Case Sw_Integer Of
0: (KeyCode: Word); { Full key code }
1: (
{$ifdef ENDIAN_BIG}
ScanCode: Byte;
CharCode: Char;
{$else not ENDIAN_BIG}
CharCode: Char; { Char code }
ScanCode: Byte; { Scan code }
{$endif not ENDIAN_BIG}
KeyShift: byte)); { Shift states }
evMessage: ( { ** MESSAGE EVENT ** }
Command: Sw_Word; { Message command }
Id : Sw_Word; { Message id }
Data : Real; { Message data }
Case Sw_Word Of
0: (InfoPtr: Pointer); { Message pointer }
1: (InfoLong: Longint); { Message longint }
2: (InfoWord: Word); { Message Sw_Word }
3: (InfoInt: Integer); { Message Sw_Integer }
4: (InfoByte: Byte); { Message byte }
5: (InfoChar: Char)); { Message character }
END;
PEvent = ^TEvent;
TVideoMode = Video.TVideoMode; { Screen mode }
{---------------------------------------------------------------------------}
{ ERROR HANDLER FUNCTION DEFINITION }
{---------------------------------------------------------------------------}
TYPE
TSysErrorFunc = FUNCTION (ErrorCode: Sw_Integer; Drive: Byte): Sw_Integer;
{***************************************************************************}
{ INTERFACE ROUTINES }
{***************************************************************************}
{ Get Dos counter ticks }
Function GetDosTicks:longint; { returns ticks at 18.2 Hz, just like DOS }
procedure GiveUpTimeSlice;
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{ BUFFER MOVE ROUTINES }
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{-CStrLen------------------------------------------------------------
Returns the length of string S, where S is a control string using tilde
characters ('~') to designate shortcut characters. The tildes are
excluded from the length of the string, as they will not appear on
the screen. For example, given the string '~B~roccoli' as its
parameter, CStrLen returns 8.
25May96 LdB
---------------------------------------------------------------------}
FUNCTION CStrLen (Const S: String): Sw_Integer;
{-MoveStr------------------------------------------------------------
Moves a string into a buffer for use with a view's WriteBuf or WriteLine.
Dest must be a TDrawBuffer (or an equivalent array of Sw_Words). The
characters in Str are moved into the low bytes of corresponding Sw_Words
in Dest. The high bytes of the Sw_Words are set to Attr, or remain
unchanged if Attr is zero.
25May96 LdB
---------------------------------------------------------------------}
PROCEDURE MoveStr (Var Dest; Const Str: String; Attr: Byte);
// as MoveChar, but for utf8-encoded chars in string typed vars
PROCEDURE FillStr (Var Dest; Const Str: String; Attr: Byte; Count: Sw_Word);
// moves bytes "as is" from string to longint
FUNCTION LongIntFromStr (Str: String) : LongInt;
{-MoveCStr-----------------------------------------------------------
The characters in Str are moved into the low bytes of corresponding
Sw_Words in Dest. The high bytes of the Sw_Words are set to Lo(Attr) or
Hi(Attr). Tilde characters (~) in the string toggle between the two
attribute bytes passed in the Attr Sw_Word.
25May96 LdB
---------------------------------------------------------------------}
PROCEDURE MoveCStr (Var Dest; Const Str: String; Attrs: Word);
{-MoveBuf------------------------------------------------------------
Count bytes are moved from Source into the low bytes of corresponding
Sw_Words in Dest. The high bytes of the Sw_Words in Dest are set to Attr,
or remain unchanged if Attr is zero.
25May96 LdB
---------------------------------------------------------------------}
PROCEDURE MoveBuf (Var Dest, Source; Attr: Byte; Count: Sw_Word);
{-MoveChar------------------------------------------------------------
Moves characters into a buffer for use with a view's WriteBuf or
WriteLine. Dest must be a TDrawBuffer (or an equivalent array of Sw_Words).
The low bytes of the first Count Sw_Words of Dest are set to C, or
remain unchanged if Ord(C) is zero. The high bytes of the Sw_Words are
set to Attr, or remain unchanged if Attr is zero.
25May96 LdB
---------------------------------------------------------------------}
PROCEDURE MoveChar (Var Dest; C: Char; Attr: Byte; Count: Sw_Word);
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{ KEYBOARD SUPPORT ROUTINES }
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{-GetAltCode---------------------------------------------------------
Returns the scancode corresponding to Alt+Ch key that is given.
25May96 LdB
---------------------------------------------------------------------}
FUNCTION GetAltCode (Ch: Char): Word;
{-GetCtrlCode--------------------------------------------------------
Returns the scancode corresponding to Alt+Ch key that is given.
25May96 LdB
---------------------------------------------------------------------}
FUNCTION GetCtrlCode (Ch: Char): Word;
{-GetAltChar---------------------------------------------------------
Returns the ascii character for the Alt+Key scancode that was given.
25May96 LdB
---------------------------------------------------------------------}
FUNCTION GetAltChar (KeyCode: Word): Char;
{-GetCtrlChar--------------------------------------------------------
Returns the ascii character for the Ctrl+Key scancode that was given.
25May96 LdB
---------------------------------------------------------------------}
FUNCTION GetCtrlChar (KeyCode: Word): Char;
{-CtrlToArrow--------------------------------------------------------
Converts a WordStar-compatible control key code to the corresponding
cursor key code.
25May96 LdB
---------------------------------------------------------------------}
FUNCTION CtrlToArrow (KeyCode: Word): Word;
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{ KEYBOARD CONTROL ROUTINES }
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{-GetShiftState------------------------------------------------------
Returns a byte containing the current Shift key state. The return
value contains a combination of the kbXXXX constants for shift states.
08Jul96 LdB
---------------------------------------------------------------------}
FUNCTION GetShiftState: Byte;
{-GetKeyEvent--------------------------------------------------------
Checks whether a keyboard event is available. If a key has been pressed,
Event.What is set to evKeyDown and Event.KeyCode is set to the scan
code of the key. Otherwise, Event.What is set to evNothing.
19May98 LdB
---------------------------------------------------------------------}
PROCEDURE GetKeyEvent (Var Event: TEvent);
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{ MOUSE CONTROL ROUTINES }
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{-ShowMouse----------------------------------------------------------
Decrements the hide counter and if zero the mouse is shown on screen.
30Jun98 LdB
---------------------------------------------------------------------}
PROCEDURE ShowMouse;
{-HideMouse----------------------------------------------------------
If mouse hide counter is zero it removes the cursor from the screen.
The hide counter is then incremented by one count.
30Jun98 LdB
---------------------------------------------------------------------}
PROCEDURE HideMouse;
{-GetMouseEvent------------------------------------------------------
Checks whether a mouse event is available. If a mouse event has occurred,
Event.What is set to evMouseDown, evMouseUp, evMouseMove, or evMouseAuto
and the button and double click variables are set appropriately.
06Jan97 LdB
---------------------------------------------------------------------}
PROCEDURE GetMouseEvent (Var Event: TEvent);
{-GetSystemEvent------------------------------------------------------
Checks whether a system event is available. If a system event has occurred,
Event.What is set to evCommand appropriately
10Oct2000 PM
---------------------------------------------------------------------}
procedure GetSystemEvent (Var Event: TEvent);
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{ EVENT HANDLER CONTROL ROUTINES }
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{-InitEvents---------------------------------------------------------
Initializes the event manager, enabling the mouse handler routine and
under DOS/DPMI shows the mouse on screen. It is called automatically
by TApplication.Init.
02May98 LdB
---------------------------------------------------------------------}
PROCEDURE InitEvents;
{-DoneEvents---------------------------------------------------------
Terminates event manager and disables the mouse and under DOS hides
the mouse. It is called automatically by TApplication.Done.
02May98 LdB
---------------------------------------------------------------------}
PROCEDURE DoneEvents;
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{ VIDEO CONTROL ROUTINES }
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{-Initkeyboard-------------------------------------------------------
Initializes the keyboard. Before it is called read(ln)/write(ln)
are functional, after it is called FV's keyboard routines are
functional.
---------------------------------------------------------------------}
procedure initkeyboard;
{-Donekeyboard-------------------------------------------------------
Restores keyboard to original state. FV's keyboard routines may not
be used after a call to this. Read(ln)/write(ln) can be used again.
---------------------------------------------------------------------}
procedure donekeyboard;
{-DetectVideo---------------------------------------------------------
Detects the current video mode without initializing or otherwise
changing the current screen.
---------------------------------------------------------------------}
procedure DetectVideo;
{-InitVideo---------------------------------------------------------
Initializes the video manager, Saves the current screen mode in
StartupMode, and switches to the mode indicated by ScreenMode.
19May98 LdB
---------------------------------------------------------------------}
function InitVideo:boolean;
{-DoneVideo---------------------------------------------------------
Terminates the video manager by restoring the initial screen mode
(given by StartupMode), clearing the screen, and restoring the cursor.
Called automatically by TApplication.Done.
03Jan97 LdB
---------------------------------------------------------------------}
PROCEDURE DoneVideo;
{-ClearScreen--------------------------------------------------------
Does nothing provided for compatability purposes only.
04Jan97 LdB
---------------------------------------------------------------------}
PROCEDURE ClearScreen;
{-SetVideoMode-------------------------------------------------------
Does nothing provided for compatability purposes only.
04Jan97 LdB
---------------------------------------------------------------------}
PROCEDURE SetVideoMode (Mode: Sw_Word);
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{ ERROR CONTROL ROUTINES }
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{-InitSysError-------------------------------------------------------
Error handling is not yet implemented so this simply sets
SysErrActive=True (ie it lies) and exits.
20May98 LdB
---------------------------------------------------------------------}
PROCEDURE InitSysError;
{-DoneSysError-------------------------------------------------------
Error handling is not yet implemented so this simply sets
SysErrActive=False and exits.
20May98 LdB
---------------------------------------------------------------------}
PROCEDURE DoneSysError;
{-SystemError---------------------------------------------------------
Error handling is not yet implemented so this simply drops through.
20May98 LdB
---------------------------------------------------------------------}
FUNCTION SystemError (ErrorCode: Sw_Integer; Drive: Byte): Sw_Integer;
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{ STRING FORMAT ROUTINES }
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{-PrintStr-----------------------------------------------------------
Does nothing provided for compatability purposes only.
30Jun98 LdB
---------------------------------------------------------------------}
PROCEDURE PrintStr (CONST S: String);
{-FormatStr----------------------------------------------------------
A string formatting routine that given a string that includes format
specifiers and a list of parameters in Params, FormatStr produces a
formatted output string in Result.
18Feb99 LdB
---------------------------------------------------------------------}
PROCEDURE FormatStr (Var Result: String; CONST Format: String; Var Params);
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{ >> NEW QUEUED EVENT HANDLER ROUTINES << }
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{-PutEventInQueue-----------------------------------------------------
If there is room in the queue the event is placed in the next vacant
position in the queue manager.
17Mar98 LdB
---------------------------------------------------------------------}
FUNCTION PutEventInQueue (Var Event: TEvent): Boolean;
{-NextQueuedEvent----------------------------------------------------
If there are queued events the next event is loaded into event else
evNothing is returned.
17Mar98 LdB
---------------------------------------------------------------------}
PROCEDURE NextQueuedEvent(Var Event: TEvent);
{***************************************************************************}
{ INITIALIZED PUBLIC VARIABLES }
{***************************************************************************}
PROCEDURE HideMouseCursor;
PROCEDURE ShowMouseCursor;
{---------------------------------------------------------------------------}
{ INITIALIZED DOS/DPMI/WIN/NT/OS2 VARIABLES }
{---------------------------------------------------------------------------}
CONST
CheckSnow : Boolean = False; { Compatability only }
MouseEvents : Boolean = False; { Mouse event state }
MouseReverse : Boolean = False; { Mouse reversed }
HiResScreen : Boolean = False; { Compatability only }
CtrlBreakHit : Boolean = False; { Compatability only }
SaveCtrlBreak: Boolean = False; { Compatability only }
SysErrActive : Boolean = False; { Compatability only }
FailSysErrors: Boolean = False; { Compatability only }
ButtonCount : Byte = 0; { Mouse button count }
DoubleDelay : Sw_Word = 8; { Double click delay }
RepeatDelay : Sw_Word = 8; { Auto mouse delay }
SysColorAttr : Sw_Word = $4E4F; { System colour attr }
SysMonoAttr : Sw_Word = $7070; { System mono attr }
StartupMode : Sw_Word = $FFFF; { Compatability only }
CursorLines : Sw_Word = $FFFF; { Compatability only }
ScreenBuffer : Pointer = Nil; { Compatability only }
SaveInt09 : Pointer = Nil; { Compatability only }
SysErrorFunc : TSysErrorFunc = {$ifdef FPC}@{$endif}SystemError; { System error ptr }
{***************************************************************************}
{ UNINITIALIZED PUBLIC VARIABLES }
{***************************************************************************}
{---------------------------------------------------------------------------}
{ UNINITIALIZED DOS/DPMI/WIN/NT/OS2 VARIABLES }
{---------------------------------------------------------------------------}
VAR
MouseIntFlag: Byte; { Mouse in int flag }
MouseButtons: Byte; { Mouse button state }
ScreenWidth : Byte; { Screen text width }
ScreenHeight: Byte; { Screen text height }
ScreenMode : TVideoMode; { Screen mode }
MouseWhere : TPoint; { Mouse position }
{<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>}
IMPLEMENTATION
{<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>}
{ API Units }
USES
FVConsts,
Keyboard,Mouse;
{***************************************************************************}
{ PRIVATE INTERNAL CONSTANTS }
{***************************************************************************}
{---------------------------------------------------------------------------}
{ DOS/DPMI MOUSE INTERRUPT EVENT QUEUE SIZE }
{---------------------------------------------------------------------------}
CONST EventQSize = 16; { Default int bufsize }
{---------------------------------------------------------------------------}
{ DOS/DPMI/WIN/NT/OS2 NEW EVENT QUEUE MAX SIZE }
{---------------------------------------------------------------------------}
CONST QueueMax = 64; { Max new queue size }
{---------------------------------------------------------------------------}
{ MAX WIEW WIDTH to avoid TDrawBuffer overrun in views unit }
{---------------------------------------------------------------------------}
CONST MaxViewWidth = 255; { Max view width }
{***************************************************************************}
{ PRIVATE INTERNAL TYPES }
{***************************************************************************}
{***************************************************************************}
{ PRIVATE INTERNAL INITIALIZED VARIABLES }
{***************************************************************************}
{---------------------------------------------------------------------------}
{ DOS/DPMI/WIN/NT/OS2 ALT KEY SCANCODES FROM KEYS (0-127) }
{---------------------------------------------------------------------------}
CONST AltCodes: Array [0..127] Of Byte = (
$00, $00, $00, $00, $00, $00, $00, $00, { $00 - $07 }
$00, $00, $00, $00, $00, $00, $00, $00, { $08 - $0F }
$00, $00, $00, $00, $00, $00, $00, $00, { $10 - $17 }
$00, $00, $00, $00, $00, $00, $00, $00, { $18 - $1F }
$00, $00, $00, $00, $00, $00, $00, $00, { $20 - $27 }
$00, $00, $00, $00, $00, $82, $00, $00, { $28 - $2F }
$81, $78, $79, $7A, $7B, $7C, $7D, $7E, { $30 - $37 }
$7F, $80, $00, $00, $00, $83, $00, $00, { $38 - $3F }
$00, $1E, $30, $2E, $20, $12, $21, $22, { $40 - $47 }
$23, $17, $24, $25, $26, $32, $31, $18, { $48 - $4F }
$19, $10, $13, $1F, $14, $16, $2F, $11, { $50 - $57 }
$2D, $15, $2C, $00, $00, $00, $00, $00, { $58 - $5F }
$00, $00, $00, $00, $00, $00, $00, $00, { $60 - $67 }
$00, $00, $00, $00, $00, $00, $00, $00, { $68 - $6F }
$00, $00, $00, $00, $00, $00, $00, $00, { $70 - $77 }
$00, $00, $00, $00, $00, $00, $00, $00); { $78 - $7F }
{***************************************************************************}
{ PRIVATE INTERNAL INITIALIZED VARIABLES }
{***************************************************************************}
{---------------------------------------------------------------------------}
{ NEW CONTROL VARIABLES }
{---------------------------------------------------------------------------}
CONST
HideCount : Sw_Integer = 0; { Cursor hide count }
QueueCount: Sw_Word = 0; { Queued message count }
QueueHead : Sw_Word = 0; { Queue head pointer }
QueueTail : Sw_Word = 0; { Queue tail pointer }
{***************************************************************************}
{ PRIVATE INTERNAL UNINITIALIZED VARIABLES }
{***************************************************************************}
{---------------------------------------------------------------------------}
{ UNINITIALIZED DOS/DPMI/API VARIABLES }
{---------------------------------------------------------------------------}
VAR
LastDouble : Boolean; { Last double buttons }
LastButtons: Byte; { Last button state }
DownButtons: Byte; { Last down buttons }
EventCount : Sw_Word; { Events in queue }
AutoDelay : Sw_Word; { Delay time count }
DownTicks : Sw_Word; { Down key tick count }
AutoTicks : Sw_Word; { Held key tick count }
LastWhereX : Sw_Word; { Last x position }
LastWhereY : Sw_Word; { Last y position }
DownWhereX : Sw_Word; { Last x position }
DownWhereY : Sw_Word; { Last y position }
LastWhere : TPoint; { Last mouse position }
DownWhere : TPoint; { Last down position }
EventQHead : Pointer; { Head of queue }
EventQTail : Pointer; { Tail of queue }
EventQueue : Array [0..EventQSize - 1] Of TEvent; { Event queue }
EventQLast : RECORD END; { Simple end marker }
StartupScreenMode : TVideoMode;
{$ifdef OS_AMIGA}
StartupTicks: Int64; // ticks at Startup for GetDOSTicks
{$endif}
{---------------------------------------------------------------------------}
{ GetDosTicks (18.2 Hz) }
{---------------------------------------------------------------------------}
Function GetDosTicks:longint; { returns ticks at 18.2 Hz, just like DOS }
{$IFDEF OS_OS2}
const
QSV_MS_COUNT = 14;
var
L: longint;
begin
DosQuerySysInfo (QSV_MS_COUNT, QSV_MS_COUNT, L, 4);
GetDosTicks := L div 55;
end;
{$ENDIF}
{$IFDEF OS_UNIX}
var
tv : TimeVal;
{ tz : TimeZone;}
begin
FPGetTimeOfDay(@tv,nil{,tz});
GetDosTicks:=((tv.tv_Sec mod 86400) div 60)*1092+((tv.tv_Sec mod 60)*1000000+tv.tv_USec) div 54945;
end;
{$ENDIF OS_UNIX}
{$IFDEF OS_WINDOWS}
begin
GetDosTicks:=GetTickCount div 55;
end;
{$ENDIF OS_WINDOWS}
{$IFDEF OS_DOS}
begin
GetDosTicks:=MemL[$40:$6c];
end;
{$ENDIF OS_DOS}
{$IFDEF OS_NETWARE_LIBC}
var
tv : TTimeVal;
tz : TTimeZone;
begin
fpGetTimeOfDay(tv,tz);
GetDosTicks:=((tv.tv_sec mod 86400) div 60)*1092+((tv.tv_Sec mod 60)*1000000+tv.tv_USec) div 549
end;
{$ENDIF}
{$IFDEF OS_NETWARE_CLIB}
begin
GetDosTicks := Nwserv.GetCurrentTicks;
end;
{$ENDIF}
{$IFDEF OS_AMIGA}
begin
GetDosTicks:= ((dos.GetMsCount div 55) - StartupTicks) and $7FFFFFFF;
end;
{$ENDIF OS_AMIGA}
procedure GiveUpTimeSlice;
{$IFDEF OS_DOS}
var r: registers;
begin
Intr ($28, R); (* This is supported everywhere. *)
r.ax:=$1680;
intr($2f,r);
end;
{$ENDIF}
{$IFDEF OS_UNIX}
var
req,rem : timespec;
begin
req.tv_sec:=0;
req.tv_nsec:=10000000;{ 10 ms }
fpnanosleep(@req,@rem);
end;
{$ENDIF}
{$IFDEF OS_OS2}
begin
DosSleep (5);
end;
{$ENDIF}
{$IFDEF OS_WINDOWS}
begin
{ if the return value of this call is non zero then
it means that a ReadFileEx or WriteFileEx have completed
unused for now ! }
{ wait for 10 ms }
if SleepEx(10,true)=WAIT_IO_COMPLETION then
begin
{ here we should handle the completion of the routines
if we use them }
end;
end;
{$ENDIF}
{$IFDEF OS_NETWARE_LIBC}
begin
Delay (10);
end;
{$ENDIF}
{$IFDEF OS_NETWARE_CLIB}
begin
Delay (10);
end;
{$ENDIF}
{$IFDEF OS_AMIGA}
begin
{ AmigaOS Delay() wait's argument in 1/50 seconds }
{ DOSDelay(2); // the old solution... }
Keyboard.WaitForSystemEvent(150);
end;
{$ENDIF OS_AMIGA}
{---------------------------------------------------------------------------}
{ UNINITIALIZED DOS/DPMI/WIN/NT/OS2 VARIABLES }
{---------------------------------------------------------------------------}
VAR
SaveExit: Pointer; { Saved exit pointer }
Queue : Array [0..QueueMax-1] Of TEvent; { New message queue }
{***************************************************************************}
{ PRIVATE INTERNAL ROUTINES }
{***************************************************************************}
PROCEDURE ShowMouseCursor;inline;
BEGIN
ShowMouse;
END;
PROCEDURE HideMouseCursor;inline;
BEGIN
HideMouse;
END;
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{ DOS/DPMI/WIN/NT/OS2 PRIVATE INTERNAL ROUTINES }
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{---------------------------------------------------------------------------}
{ ExitDrivers -> Platforms DOS/DPMI/WIN/NT/OS2 - Updated 08Jun98 LdB }
{---------------------------------------------------------------------------}
PROCEDURE ExitDrivers; {$IFNDEF PPC_FPC}{$IFNDEF OS_UNIX} FAR; {$ENDIF}{$ENDIF}
BEGIN
DoneSysError; { Relase error trap }
DoneEvents; { Close event driver }
{ DoneKeyboard;}
DoneVideo;
ExitProc := SaveExit; { Restore old exit }
END;
{---------------------------------------------------------------------------}
{ DetectVideo -> Platforms DOS/DPMI/WIN/NT/OS2 - Updated 19May98 LdB }
{---------------------------------------------------------------------------}
procedure DetectVideo;
VAR
CurrMode : TVideoMode;
begin
{ Video.InitVideo; Incompatible with BP
and forces a screen clear which is often a bad thing PM }
GetVideoMode(CurrMode);
ScreenMode:=CurrMode;
end;
{---------------------------------------------------------------------------}
{ DetectMouse -> Platforms DOS/DPMI/WIN/NT/OS2 - Updated 19May98 LdB }
FUNCTION DetectMouse: Byte;inline;
begin
DetectMouse:=Mouse.DetectMouse;
end;
{***************************************************************************}
{ INTERFACE ROUTINES }
{***************************************************************************}
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{ BUFFER MOVE ROUTINES }
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{---------------------------------------------------------------------------}
{ CStrLen -> Platforms DOS/DPMI/WIN/NT/OS2 - Updated 25May96 LdB }
{---------------------------------------------------------------------------}
FUNCTION CStrLen (Const S: String): Sw_Integer;
VAR I, J: Sw_Integer; skip: byte;
BEGIN
J := 0; { Set result to zero }
skip := 0;
For I := 1 To Length(S) Do Begin
if (skip > 0) Then Begin
Dec(skip);
continue;
End;
skip := Utf8CodePointLen(@S[I], 4, False) - 1;
If (S[I] <> '~') Then Inc(J); { Inc count if not ~ }
End;
CStrLen := J; { Return length }
END;
PROCEDURE MoveCStrImpl (Var Dest; Const Str: String; Attrs: Word; C: Boolean);
VAR B: Byte; I, J: Sw_Word; P: ^Int64; skip: byte;
BEGIN
J := 0; { Start position }
skip := 0;
For I := 1 To Length(Str) Do Begin { For each character }
if (skip > 0) Then Begin
Dec(skip);
continue;
End;
If ((Str[I] <> '~') OR NOT C) Then Begin { Not tilde character }
skip := Utf8CodePointLen(@Str[I], 4, False) - 1;
P := @TInt64Array(Dest)[J]; { Pointer to Sw_Word }
If (Lo(Attrs) <> 0) Then
Int64Rec(P^).Hi := Lo(Attrs); { Copy attribute }
Int64Rec(P^).Lo := 0;
Int64Rec(P^).Bytes[0] := Ord(Str[I]); { Copy string char }
If (skip > 0) Then Begin
Int64Rec(P^).Bytes[1] := Ord(Str[I+1]); { Copy string char }
End;
If (skip > 1) Then Begin
Int64Rec(P^).Bytes[2] := Ord(Str[I+2]); { Copy string char }
End;
If (skip > 2) Then Begin
Int64Rec(P^).Bytes[3] := Ord(Str[I+3]); { Copy string char }
End;
Inc(J); { Next position }
End Else Begin
B := Hi(Attrs); { Hold attribute }
WordRec(Attrs).Hi := Lo(Attrs); { Copy low to high }
WordRec(Attrs).Lo := B; { Complete exchange }
End;
End;
END;
{---------------------------------------------------------------------------}
{ MoveStr -> Platforms DOS/DPMI/WIN/NT/OS2 - Updated 10Jul99 LdB }
{---------------------------------------------------------------------------}
PROCEDURE MoveStr (Var Dest; Const Str: String; Attr: Byte);
BEGIN
MoveCStrImpl (Dest, Str, Attr, False);
END;
(*
PROCEDURE MoveStr (Var Dest; Const Str: String; Attr: Byte);
VAR I: Word; P: ^Int64;
BEGIN
For I := 1 To Length(Str) Do Begin { For each character }
P := @TInt64Array(Dest)[I-1]; { Pointer to Sw_Word }
If (Attr <> 0) Then Int64Rec(P^).Hi := Attr; { Copy attribute }
Int64Rec(P^).Lo := Byte(Str[I]); { Copy string char }
End;
END;
*)
// by unxed
// Вместо MoveChar, для символа UTF-8 в виде строки
PROCEDURE FillStr (Var Dest; Const Str: String; Attr: Byte; Count: Sw_Word);
VAR I,J: Word; P: ^Int64;
BEGIN
For I := 1 To Count Do Begin
P := @TInt64Array(Dest)[I-1];
Int64Rec(P^).Lo := 0;
For J := 1 To Length(Str) Do Begin
Int64Rec(P^).Bytes[J-1] := Ord(Str[J]);