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922 lines
23 KiB
ObjectPascal
922 lines
23 KiB
ObjectPascal
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 1999-2000 by Nils Sjoholm and Carl Eric Codere
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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**********************************************************************}
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unit Crt;
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{--------------------------------------------------------------------}
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{ LEFT TO DO: }
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{--------------------------------------------------------------------}
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{ o Write special characters are not recognized }
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{ o Write does not take care of window coordinates yet. }
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{ o Read does not recognize the special editing characters }
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{ o Read does not take care of window coordinates yet. }
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{ o Readkey extended scancode is not correct yet }
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{ o Color mapping only works for 4 colours }
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{ o ClrScr, DeleteLine, InsLine do not work with window coordinates }
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{--------------------------------------------------------------------}
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Interface
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Const
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{ Controlling consts }
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Flushing=false; {if true then don't buffer output}
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ScreenWidth = 80;
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ScreenHeight = 25;
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{$i crth.inc}
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Implementation
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var
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maxcols,maxrows : longint;
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CONST
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{ This is used to make sure that readkey returns immediately }
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{ if keypressed was used beforehand. }
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KeyPress : char = #0;
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_LVODisplayBeep = -96;
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Type
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pInfoData = ^tInfoData;
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tInfoData = packed record
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id_NumSoftErrors : Longint; { number of soft errors on disk }
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id_UnitNumber : Longint; { Which unit disk is (was) mounted on }
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id_DiskState : Longint; { See defines below }
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id_NumBlocks : Longint; { Number of blocks on disk }
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id_NumBlocksUsed : Longint; { Number of block in use }
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id_BytesPerBlock : Longint;
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id_DiskType : Longint; { Disk Type code }
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id_VolumeNode : Longint; { BCPL pointer to volume node }
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id_InUse : Longint; { Flag, zero if not in use }
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end;
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{ * List Node Structure. Each member in a list starts with a Node * }
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pNode = ^tNode;
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tNode = packed Record
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ln_Succ, { * Pointer to next (successor) * }
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ln_Pred : pNode; { * Pointer to previous (predecessor) * }
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ln_Type : Byte;
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ln_Pri : Shortint; { * Priority, for sorting * }
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ln_Name : PChar; { * ID string, null terminated * }
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End; { * Note: Integer aligned * }
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{ normal, full featured list }
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pList = ^tList;
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tList = packed record
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lh_Head : pNode;
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lh_Tail : pNode;
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lh_TailPred : pNode;
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lh_Type : Byte;
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l_pad : Byte;
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end;
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pMsgPort = ^tMsgPort;
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tMsgPort = packed record
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mp_Node : tNode;
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mp_Flags : Byte;
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mp_SigBit : Byte; { signal bit number }
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mp_SigTask : Pointer; { task to be signalled (TaskPtr) }
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mp_MsgList : tList; { message linked list }
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end;
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pMessage = ^tMessage;
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tMessage = packed record
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mn_Node : tNode;
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mn_ReplyPort : pMsgPort; { message reply port }
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mn_Length : Word; { message len in bytes }
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end;
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pIOStdReq = ^tIOStdReq;
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tIOStdReq = packed record
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io_Message : tMessage;
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io_Device : Pointer; { device node pointer }
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io_Unit : Pointer; { unit (driver private)}
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io_Command : Word; { device command }
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io_Flags : Byte;
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io_Error : Shortint; { error or warning num }
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io_Actual : Longint; { actual number of bytes transferred }
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io_Length : Longint; { requested number bytes transferred}
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io_Data : Pointer; { points to data area }
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io_Offset : Longint; { offset for block structured devices }
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end;
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pIntuiMessage = ^tIntuiMessage;
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tIntuiMessage = packed record
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ExecMessage : tMessage;
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IClass : Longint;
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Code : Word;
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Qualifier : Word;
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IAddress : Pointer;
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MouseX,
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MouseY : Word;
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Seconds,
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Micros : Longint;
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IDCMPWindow : Pointer;
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SpecialLink : pIntuiMessage;
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end;
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pWindow = ^tWindow;
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tWindow = packed record
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NextWindow : pWindow; { for the linked list in a screen }
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LeftEdge,
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TopEdge : Integer; { screen dimensions of window }
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Width,
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Height : Integer; { screen dimensions of window }
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MouseY,
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MouseX : Integer; { relative to upper-left of window }
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MinWidth,
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MinHeight : Integer; { minimum sizes }
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MaxWidth,
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MaxHeight : Word; { maximum sizes }
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Flags : Longint; { see below for defines }
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MenuStrip : Pointer; { the strip of Menu headers }
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Title : PChar; { the title text for this window }
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FirstRequest : Pointer; { all active Requesters }
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DMRequest : Pointer; { double-click Requester }
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ReqCount : Integer; { count of reqs blocking Window }
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WScreen : Pointer; { this Window's Screen }
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RPort : Pointer; { this Window's very own RastPort }
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BorderLeft,
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BorderTop,
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BorderRight,
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BorderBottom : Shortint;
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BorderRPort : Pointer;
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FirstGadget : Pointer;
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Parent,
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Descendant : pWindow;
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Pointer_ : Pointer; { sprite data }
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PtrHeight : Shortint; { sprite height (not including sprite padding) }
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PtrWidth : Shortint; { sprite width (must be less than or equal to 16) }
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XOffset,
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YOffset : Shortint; { sprite offsets }
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IDCMPFlags : Longint; { User-selected flags }
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UserPort,
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WindowPort : pMsgPort;
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MessageKey : pIntuiMessage;
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DetailPen,
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BlockPen : Byte; { for bar/border/gadget rendering }
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CheckMark : Pointer;
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ScreenTitle : PChar; { if non-null, Screen title when Window is active }
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GZZMouseX : Integer;
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GZZMouseY : Integer;
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GZZWidth : Integer;
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GZZHeight : Word;
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ExtData : Pointer;
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UserData : Pointer; { general-purpose pointer to User data extension }
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WLayer : Pointer;
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IFont : Pointer;
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MoreFlags : Longint;
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end;
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const
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M_LNM = 20; { linefeed newline mode }
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PMB_ASM = M_LNM + 1; { internal storage bit for AS flag }
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PMB_AWM = PMB_ASM + 1; { internal storage bit for AW flag }
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MAXTABS = 80;
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IECLASS_MAX = $15;
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type
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pKeyMap = ^tKeyMap;
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tKeyMap = packed record
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km_LoKeyMapTypes : Pointer;
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km_LoKeyMap : Pointer;
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km_LoCapsable : Pointer;
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km_LoRepeatable : Pointer;
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km_HiKeyMapTypes : Pointer;
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km_HiKeyMap : Pointer;
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km_HiCapsable : Pointer;
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km_HiRepeatable : Pointer;
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end;
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pConUnit = ^tConUnit;
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tConUnit = packed record
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cu_MP : tMsgPort;
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{ ---- read only variables }
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cu_Window : Pointer; { (WindowPtr) intuition window bound to this unit }
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cu_XCP : Integer; { character position }
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cu_YCP : Integer;
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cu_XMax : Integer; { max character position }
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cu_YMax : Integer;
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cu_XRSize : Integer; { character raster size }
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cu_YRSize : Integer;
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cu_XROrigin : Integer; { raster origin }
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cu_YROrigin : Integer;
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cu_XRExtant : Integer; { raster maxima }
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cu_YRExtant : Integer;
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cu_XMinShrink : Integer; { smallest area intact from resize process }
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cu_YMinShrink : Integer;
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cu_XCCP : Integer; { cursor position }
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cu_YCCP : Integer;
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{ ---- read/write variables (writes must must be protected) }
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{ ---- storage for AskKeyMap and SetKeyMap }
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cu_KeyMapStruct : tKeyMap;
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{ ---- tab stops }
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cu_TabStops : Array [0..MAXTABS-1] of Word;
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{ 0 at start, -1 at end of list }
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{ ---- console rastport attributes }
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cu_Mask : Shortint;
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cu_FgPen : Shortint;
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cu_BgPen : Shortint;
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cu_AOLPen : Shortint;
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cu_DrawMode : Shortint;
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cu_AreaPtSz : Shortint;
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cu_AreaPtrn : Pointer; { cursor area pattern }
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cu_Minterms : Array [0..7] of Byte; { console minterms }
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cu_Font : Pointer; { (TextFontPtr) }
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cu_AlgoStyle : Byte;
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cu_TxFlags : Byte;
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cu_TxHeight : Word;
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cu_TxWidth : Word;
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cu_TxBaseline : Word;
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cu_TxSpacing : Word;
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{ ---- console MODES and RAW EVENTS switches }
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cu_Modes : Array [0..(PMB_AWM+7) div 8 - 1] of Byte;
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{ one bit per mode }
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cu_RawEvents : Array [0..(IECLASS_MAX+7) div 8 - 1] of Byte;
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end;
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const
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CD_CURRX = 1;
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CD_CURRY = 2;
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CD_MAXX = 3;
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CD_MAXY = 4;
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CSI = chr($9b);
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SIGBREAKF_CTRL_C = 4096;
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function AllocVec( size, reqm : Longint ): Pointer;
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begin
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asm
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MOVE.L A6,-(A7)
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MOVE.L size,d0
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MOVE.L reqm,d1
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MOVE.L _ExecBase, A6
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JSR -684(A6)
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MOVE.L (A7)+,A6
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MOVE.L d0,@RESULT
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end;
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end;
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function DoPkt(ID : pMsgPort;
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Action, Param1, Param2,
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Param3, Param4, Param5 : Longint) : Longint;
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begin
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asm
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MOVEM.L d2/d3/d4/d5/d6/d7/a6,-(A7)
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MOVE.L ID,d1
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MOVE.L Action,d2
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MOVE.L Param1,d3
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MOVE.L Param2,d4
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MOVE.L Param3,d5
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MOVE.L Param4,d6
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MOVE.L Param5,d7
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MOVE.L _DOSBase,A6
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JSR -240(A6)
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MOVEM.L (A7)+,d2/d3/d4/d5/d6/d7/a6
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MOVE.L d0,@RESULT
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end;
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end;
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procedure FreeVec( memory : Pointer );
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begin
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asm
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MOVE.L A6,-(A7)
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MOVE.L memory,a1
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MOVE.L _ExecBase,A6
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JSR -690(A6)
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MOVE.L (A7)+,A6
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end;
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end;
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function GetConsoleTask : pMsgPort;
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begin
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asm
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MOVE.L A6,-(A7)
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MOVE.L _DOSBase,A6
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JSR -510(A6)
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MOVE.L (A7)+,A6
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MOVE.L d0,@RESULT
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end;
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end;
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function GetMsg(port : pMsgPort): pMessage;
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begin
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asm
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MOVE.L A6,-(A7)
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MOVE.L port,a0
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MOVE.L _ExecBase,A6
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JSR -372(A6)
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MOVE.L (A7)+,A6
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MOVE.L d0,@RESULT
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end;
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end;
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function ModifyIDCMP(window : pWindow;
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IDCMPFlags : Longint) : Boolean;
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begin
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asm
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MOVE.L A6,-(A7)
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MOVE.L window,a0
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MOVE.L IDCMPFlags,d0
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MOVE.L _IntuitionBase,A6
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JSR -150(A6)
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MOVE.L (A7)+,A6
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TST.L d0
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bne @success
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bra @end
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@success:
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move.b #1,d0
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@end:
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move.b d0,@RESULT
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end;
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end;
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procedure ReplyMsg(mess : pMessage);
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begin
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asm
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MOVE.L A6,-(A7)
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MOVE.L mess,a1
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MOVE.L _ExecBase,A6
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JSR -378(A6)
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MOVE.L (A7)+,A6
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end;
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end;
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function WaitPort(port : pMsgPort): pMessage;
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begin
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asm
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MOVE.L A6,-(A7)
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MOVE.L port,a0
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MOVE.L _ExecBase,A6
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JSR -384(A6)
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MOVE.L (A7)+,A6
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MOVE.L d0,@RESULT
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end;
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end;
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procedure Delay_(ticks : Longint);
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begin
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asm
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MOVE.L A6,-(A7)
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MOVE.L ticks,d1
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MOVE.L _DOSBase,A6
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JSR -198(A6)
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MOVE.L (A7)+,A6
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end;
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end;
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function SetSignal(newSignals, signalMask : Longint) : Longint;
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begin
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asm
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MOVE.L A6,-(A7)
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MOVE.L newSignals,d0
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MOVE.L signalMask,d1
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MOVE.L _ExecBase,A6
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JSR -306(A6)
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MOVE.L (A7)+,A6
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MOVE.L d0,@RESULT
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end;
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end;
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function OpenInfo : pInfoData;
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var
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port : pMsgPort;
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info : pInfoData;
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bptr, d4, d5, d6, d7 : Longint;
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begin
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info := pInfoData(AllocVec(SizeOf(tInfoData), 1));
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if info <> nil then begin
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port := GetConsoleTask;
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bptr := Longint(info) shr 2;
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if port <> nil then begin
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if DoPkt(port, $19, bptr, d4, d5, d6, d7) <> 0 then info := pInfoData(bptr shl 2)
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else port := nil;
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end;
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if port = nil then begin
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FreeVec(info);
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info := nil;
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end;
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end;
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OpenInfo := info;
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end;
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procedure CloseInfo(var info : pInfoData);
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begin
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if info <> nil then begin
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FreeVec(info);
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info := nil;
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end;
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end;
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function ConData(modus : byte) : integer;
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var
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info : pInfoData;
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theunit : pConUnit;
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pos : Longint;
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begin
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pos := 1;
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info := OpenInfo;
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if info <> nil then begin
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theunit := pConUnit((pIoStdReq(info^.id_InUse))^.io_Unit);
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case modus of
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CD_CURRX : pos := theunit^.cu_XCP;
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CD_CURRY : pos := theunit^.cu_YCP;
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CD_MAXX : pos := theunit^.cu_XMax;
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CD_MAXY : pos := theunit^.cu_YMax;
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end;
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CloseInfo(info);
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end;
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ConData := pos + 1;
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end;
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function WhereX : tcrtcoord;
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begin
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WhereX := Byte(ConData(CD_CURRX))-lo(windmin);
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end;
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function realx: byte;
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begin
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RealX := Byte(ConData(CD_CURRX));
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end;
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function realy: byte;
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begin
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RealY := Byte(ConData(CD_CURRY));
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end;
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function WhereY : tcrtcoord;
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begin
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WhereY := Byte(ConData(CD_CURRY))-hi(windmin);
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end;
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function screencols : integer;
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begin
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screencols := ConData(CD_MAXX);
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end;
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function screenrows : integer;
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begin
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screenrows := ConData(CD_MAXY);
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end;
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procedure Realgotoxy(x,y : integer);
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begin
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Write(CSI, y, ';', x, 'H');
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end;
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procedure gotoxy(x,y : tcrtcoord);
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begin
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if (x<1) then
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x:=1;
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if (y<1) then
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y:=1;
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if y+hi(windmin)-2>=hi(windmax) then
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y:=hi(windmax)-hi(windmin)+1;
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if x+lo(windmin)-2>=lo(windmax) then
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x:=lo(windmax)-lo(windmin)+1;
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Write(CSI, y+hi(windmin), ';', x+lo(windmin), 'H');
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end;
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procedure CursorOff;
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begin
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Write(CSI,'0 p');
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end;
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procedure CursorOn;
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begin
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Write(CSI,'1 p');
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end;
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procedure ClrScr;
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begin
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Write(Chr($0c));
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end;
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function ReadKey : char;
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const
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IDCMP_VANILLAKEY = $00200000;
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IDCMP_RAWKEY = $00000400;
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var
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info : pInfoData;
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win : pWindow;
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imsg : pIntuiMessage;
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msg : pMessage;
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key : char;
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idcmp, vanil : Longint;
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begin
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key := #0;
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if KeyPress <> #0 then
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Begin
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ReadKey:=KeyPress;
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KeyPress:=#0;
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exit;
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end;
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info := OpenInfo;
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if info <> nil then begin
|
|
win := pWindow(pConUnit((pIoStdReq(info^.id_InUse))^.io_Unit)^.cu_Window);
|
|
idcmp := win^.IDCMPFlags;
|
|
vanil := IDCMP_VANILLAKEY or IDCMP_RAWKEY;
|
|
|
|
ModifyIDCMP(win, (idcmp or vanil));
|
|
|
|
repeat
|
|
msg := WaitPort(win^.UserPort);
|
|
imsg := pIntuiMessage(GetMsg(win^.UserPort));
|
|
|
|
if (imsg^.IClass = IDCMP_VANILLAKEY) then
|
|
key := char(imsg^.Code)
|
|
else
|
|
if (imsg^.IClass = IDCMP_RAWKEY) then
|
|
key := char(imsg^.Code);
|
|
|
|
ReplyMsg(pMessage(imsg));
|
|
until key <> #0;
|
|
|
|
repeat
|
|
msg := GetMsg(win^.UserPort);
|
|
|
|
if msg <> nil then ReplyMsg(msg);
|
|
until msg = nil;
|
|
|
|
ModifyIDCMP(win, idcmp);
|
|
|
|
CloseInfo(info);
|
|
end;
|
|
|
|
ReadKey := key;
|
|
end;
|
|
|
|
function KeyPressed : Boolean;
|
|
const
|
|
IDCMP_VANILLAKEY = $00200000;
|
|
IDCMP_RAWKEY = $00000400;
|
|
var
|
|
info : pInfoData;
|
|
win : pWindow;
|
|
imsg : pIntuiMessage;
|
|
msg : pMessage;
|
|
idcmp, vanil : Longint;
|
|
ispressed : Boolean;
|
|
begin
|
|
KeyPress := #0;
|
|
ispressed := False;
|
|
info := OpenInfo;
|
|
|
|
if info <> nil then begin
|
|
win := pWindow(pConUnit((pIoStdReq(info^.id_InUse))^.io_Unit)^.cu_Window);
|
|
idcmp := win^.IDCMPFlags;
|
|
vanil := IDCMP_VANILLAKEY or IDCMP_RAWKEY;
|
|
|
|
ModifyIDCMP(win, (idcmp or vanil));
|
|
|
|
msg := WaitPort(win^.UserPort);
|
|
imsg := pIntuiMessage(GetMsg(win^.UserPort));
|
|
|
|
if (imsg^.IClass = IDCMP_VANILLAKEY) or (imsg^.IClass = IDCMP_RAWKEY) then
|
|
Begin
|
|
ispressed := true;
|
|
KeyPress := char(imsg^.Code)
|
|
end;
|
|
|
|
ReplyMsg(pMessage(imsg));
|
|
|
|
repeat
|
|
msg := GetMsg(win^.UserPort);
|
|
|
|
if msg <> nil then ReplyMsg(msg);
|
|
until msg = nil;
|
|
|
|
ModifyIDCMP(win, idcmp);
|
|
|
|
CloseInfo(info);
|
|
end;
|
|
|
|
KeyPressed := ispressed;
|
|
end;
|
|
|
|
procedure TextColor(color : byte);
|
|
begin
|
|
TextAttr := (TextAttr and $70) or color;
|
|
Write(CSI, '3', color, 'm');
|
|
end;
|
|
|
|
procedure TextBackground(color : byte);
|
|
begin
|
|
Textattr:=(textattr and $8f) or ((color and $7) shl 4);
|
|
Write(CSI, '4', color, 'm');
|
|
end;
|
|
|
|
procedure Window(X1,Y1,X2,Y2: Byte);
|
|
begin
|
|
if (x1<1) or (x2>screencols) or (y2>screenrows) or
|
|
(x1>x2) or (y1>y2) then
|
|
exit;
|
|
windmin:=(x1-1) or ((y1-1) shl 8);
|
|
windmax:=(x2-1) or ((y2-1) shl 8);
|
|
gotoxy(1,1);
|
|
end;
|
|
|
|
|
|
|
|
|
|
|
|
procedure DelLine;
|
|
begin
|
|
Write(CSI,'X');
|
|
end;
|
|
|
|
procedure ClrEol;
|
|
begin
|
|
Write(CSI,'K');
|
|
end;
|
|
|
|
procedure InsLine;
|
|
begin
|
|
Write(CSI,'1 L');
|
|
end;
|
|
|
|
procedure cursorbig;
|
|
begin
|
|
end;
|
|
|
|
procedure lowvideo;
|
|
begin
|
|
end;
|
|
|
|
procedure highvideo;
|
|
begin
|
|
end;
|
|
|
|
procedure nosound;
|
|
begin
|
|
end;
|
|
|
|
procedure sound(hz : word);
|
|
begin
|
|
end;
|
|
|
|
procedure delay(DTime : Word);
|
|
var
|
|
dummy : Longint;
|
|
begin
|
|
dummy := trunc((real(DTime) / 1000.0) * 50.0);
|
|
Delay_(dummy);
|
|
end;
|
|
|
|
function CheckBreak : boolean;
|
|
begin
|
|
if (SetSignal(0, 0) and SIGBREAKF_CTRL_C) = SIGBREAKF_CTRL_C then
|
|
CheckBreak := true
|
|
else
|
|
CheckBreak := false;
|
|
end;
|
|
|
|
procedure textmode(mode : integer);
|
|
begin
|
|
lastmode:=mode;
|
|
mode:=mode and $ff;
|
|
windmin:=0;
|
|
windmax:=(screencols-1) or ((screenrows-1) shl 8);
|
|
maxcols:=screencols;
|
|
maxrows:=screenrows;
|
|
end;
|
|
|
|
procedure normvideo;
|
|
begin
|
|
end;
|
|
|
|
function GetTextBackground : byte;
|
|
var
|
|
info : pInfoData;
|
|
pen : byte;
|
|
begin
|
|
pen := 1;
|
|
info := OpenInfo;
|
|
|
|
if info <> nil then begin
|
|
pen := pConUnit((pIoStdReq(info^.id_InUse))^.io_Unit)^.cu_BgPen;
|
|
|
|
CloseInfo(info);
|
|
end;
|
|
|
|
GetTextBackground := pen;
|
|
end;
|
|
|
|
function GetTextColor : byte;
|
|
var
|
|
info : pInfoData;
|
|
pen : byte;
|
|
begin
|
|
pen := 1;
|
|
info := OpenInfo;
|
|
|
|
if info <> nil then begin
|
|
pen := pConUnit((pIoStdReq(info^.id_InUse))^.io_Unit)^.cu_FgPen;
|
|
|
|
CloseInfo(info);
|
|
end;
|
|
|
|
GetTextColor := pen;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
Read and Write routines
|
|
*****************************************************************************}
|
|
{ Problem here: Currently all these routines are not implemented because of how }
|
|
{ the console device works. Because w low level write is required to change the }
|
|
{ position of the cursor, and since the CrtWrite is assigned as the standard }
|
|
{ write routine, a recursive call will occur }
|
|
|
|
{ How to fix this: }
|
|
{ At startup make a copy of the Output handle, and then use this copy to make }
|
|
{ low level positioning calls. This does not seem to work yet. }
|
|
|
|
|
|
|
|
Function CrtWrite(var f : textrec):integer;
|
|
|
|
var
|
|
i,col,row : longint;
|
|
c : char;
|
|
buf: array[0..1] of char;
|
|
|
|
begin
|
|
col:=realx;
|
|
row:=realy;
|
|
inc(row);
|
|
inc(col);
|
|
for i:=0 to f.bufpos-1 do
|
|
begin
|
|
c:=f.buffer[i];
|
|
case ord(c) of
|
|
10 : begin
|
|
inc(row);
|
|
end;
|
|
13 : begin
|
|
col:=lo(windmin)+1;
|
|
end;
|
|
8 : if col>lo(windmin)+1 then
|
|
begin
|
|
dec(col);
|
|
end;
|
|
7 : begin
|
|
{ beep }
|
|
asm
|
|
move.l a6,d6 { save base pointer }
|
|
move.l _IntuitionBase,a6 { set library base }
|
|
sub.l a0,a0
|
|
jsr _LVODisplayBeep(a6)
|
|
move.l d6,a6 { restore base pointer }
|
|
end;
|
|
end;
|
|
else
|
|
begin
|
|
buf[0]:=c;
|
|
realgotoxy(row,col);
|
|
do_write(f.handle,longint(@buf[0]),1);
|
|
inc(col);
|
|
end;
|
|
end;
|
|
if col>lo(windmax)+1 then
|
|
begin
|
|
col:=lo(windmin)+1;
|
|
inc(row);
|
|
end;
|
|
while row>hi(windmax)+1 do
|
|
begin
|
|
delline;
|
|
dec(row);
|
|
end;
|
|
end;
|
|
f.bufpos:=0;
|
|
realgotoxy(row-1,col-1);
|
|
CrtWrite:=0;
|
|
end;
|
|
|
|
Function CrtClose(Var F: TextRec): Integer;
|
|
Begin
|
|
F.Mode:=fmClosed;
|
|
CrtClose:=0;
|
|
End;
|
|
|
|
Function CrtOpen(Var F: TextRec): Integer;
|
|
Begin
|
|
If F.Mode = fmOutput Then
|
|
CrtOpen:=0
|
|
Else
|
|
CrtOpen:=5;
|
|
End;
|
|
|
|
Function CrtRead(Var F: TextRec): Integer;
|
|
Begin
|
|
f.bufend:=do_read(f.handle,longint(f.bufptr),f.bufsize);
|
|
f.bufpos:=0;
|
|
CrtRead:=0;
|
|
End;
|
|
|
|
Function CrtInOut(Var F: TextRec): Integer;
|
|
Begin
|
|
Case F.Mode of
|
|
fmInput: CrtInOut:=CrtRead(F);
|
|
fmOutput: CrtInOut:=CrtWrite(F);
|
|
End;
|
|
End;
|
|
|
|
procedure assigncrt(var f : text);
|
|
begin
|
|
{ TextRec(F).Mode:=fmClosed;
|
|
TextRec(F).BufSize:=SizeOf(TextBuf);
|
|
TextRec(F).BufPtr:=@TextRec(F).Buffer;
|
|
TextRec(F).BufPos:=0;
|
|
TextRec(F).OpenFunc:=@CrtOpen;
|
|
TextRec(F).InOutFunc:=@CrtInOut;
|
|
TextRec(F).FlushFunc:=@CrtInOut;
|
|
TextRec(F).CloseFunc:=@CrtClose;
|
|
TextRec(F).Name[0]:='.';
|
|
TextRec(F).Name[1]:=#0;}
|
|
end;
|
|
|
|
|
|
var
|
|
old_exit : pointer;
|
|
|
|
procedure crt_exit;
|
|
begin
|
|
{ Restore default colors }
|
|
write(CSI,'0m');
|
|
exitproc:=old_exit;
|
|
end;
|
|
|
|
|
|
Begin
|
|
old_exit:=exitproc;
|
|
exitproc:=@crt_exit;
|
|
{ load system variables to temporary variables to save time }
|
|
maxcols:=screencols;
|
|
maxrows:=screenrows;
|
|
{ Set the initial text attributes }
|
|
{ Text background }
|
|
Textattr:=(textattr and $8f) or ((GetTextBackGround and $7) shl 4);
|
|
{ Text foreground }
|
|
TextAttr := (TextAttr and $70) or GetTextColor;
|
|
{ set output window }
|
|
windmax:=(maxcols-1) or (( maxrows-1) shl 8);
|
|
|
|
|
|
{ Get a copy of the standard }
|
|
{ output handle, and when using }
|
|
{ direct console calls, use this }
|
|
{ handle instead. }
|
|
{ assigncrt(Output);
|
|
TextRec(Output).mode:=fmOutput;}
|
|
end.
|