DIRECTORY
Ascii USING [BS,  CR, FF, SP, TAB],
Basics USING [bitsPerWord],
BasicTime USING [earliestGMT, FromPupTime, GMT, Now, Period],
Convert USING [RopeFromTime],
File USING [GetVolumeName, SystemVolume, Volume],
IO USING [
card, CreateStream, CreateStreamProcs, PutFR, STREAM, StreamProcs, time],
KeyboardFace USING [KeyBits, KeyStation],
Keys USING [KeyBits],
PrincOps USING [BBptr, BBTableSpace, BitAddress],
PrincOpsUtils USING [AlignedBBTable, BITAND, BITBLT, Codebase, MyGlobalFrame],
Process USING [
Abort, DisableTimeout, Pause, priorityForeground, priorityRealTime, SecondsToTicks, SetPriority, SetTimeout, Ticks],
Rope USING [Fetch, Length, ROPE],
SimpleTerminal USING [],
SystemVersion USING [bootFileDate, release],
Terminal USING [
Current, GetBitBltTable, GetBWBitmapState, GetKeys, GetMousePosition, Position, RegisterNotifier, Select, SetBWBackground, SetBWBitmapState, SetBWCursorPosition, SetMousePosition, SwapNotifier, Virtual, WaitForBWVerticalRetrace];

SimpleTerminalImpl: MONITOR LOCKS m USING m: POINTER TO MONITORLOCK
IMPORTS BasicTime, Convert, File, IO, PrincOpsUtils, Process, Rope, SystemVersion, Terminal
EXPORTS SimpleTerminal =

BEGIN

ROPE: TYPE = Rope.ROPE;


State: TYPE = {off, turningOn, on, turningOff, joining};


terminalLock: MONITORLOCK;

state: State _ off;
stateChange: CONDITION _ [timeout: 0];

terminal: Terminal.Virtual _ NIL;
turnOnCount: NAT _ 0;

originalTerminal: Terminal.Virtual;

inStream, outStream: IO.STREAM _ NIL;

keyboardWatcher, timePainter: PROCESS;


TurnOn: PUBLIC SAFE PROC [nameStripe: ROPE _ NIL] RETURNS [in, out: IO.STREAM] = TRUSTED {
TurnOnEntryA: ENTRY PROC [m: POINTER TO MONITORLOCK]
RETURNS [turnOnNeeded: BOOL] = -- INLINE -- {
oldState: State = state;
DO
SELECT state FROM
off => {
IF turnOnCount ~= 0 THEN ERROR;
originalTerminal _ Terminal.Current[];
state _ turningOn;
EXIT
};
turningOff => {
state _ on;
EXIT
};
on => EXIT;
ENDCASE;
WAIT stateChange;
ENDLOOP;
[] _ terminal.Select[];
turnOnCount _ turnOnCount.SUCC;
IF oldState ~= state THEN BROADCAST stateChange;
RETURN[state ~= on]
};
TurnOnEntryB: ENTRY PROC [m: POINTER TO MONITORLOCK] = -- INLINE -- {
state _ on;
BROADCAST stateChange;
};
IF TurnOnEntryA[@terminalLock] THEN {
IF nameStripe = NIL THEN
nameStripe _ IO.PutFR["Cedar %g.%g.%g of %t",
IO.card[SystemVersion.release.major],
IO.card[SystemVersion.release.minor],
IO.card[SystemVersion.release.patch],
IO.time[BasicTime.FromPupTime[SystemVersion.bootFileDate]]
];
InitScreen[nameStripe];
keyboardWatcher _ FORK ProcessKeyboard[];
inStream _ IO.CreateStream[inStreamProcs, NIL];
outStream _ IO.CreateStream[outStreamProcs, NIL];
TurnOnEntryB[@terminalLock];
};
RETURN [inStream, outStream]
};

TurnOff: PUBLIC SAFE PROC = TRUSTED {
TurnOffEntry: ENTRY PROC [m: POINTER TO MONITORLOCK]
RETURNS [shutdown: BOOL] = -- INLINE -- {
DO
SELECT state FROM
off => RETURN[FALSE];
on => EXIT;
ENDCASE => WAIT stateChange;
ENDLOOP;
IF (shutdown _ ((turnOnCount _ turnOnCount.PRED) = 0)) THEN {
state _ turningOff;
BROADCAST stateChange;
};
};
selected: BOOL = Terminal.Current[] = terminal;
wantPreviousTerminal: BOOL = 
selected AND
originalTerminal ~= terminal AND originalTerminal.GetBWBitmapState[] = displayed;
IF TurnOffEntry[@terminalLock] AND (~selected OR wantPreviousTerminal) THEN {
DoShutDown[terminal, going, NIL];
IF wantPreviousTerminal THEN [] _ originalTerminal.Select[];
};
};

DoShutDown: Terminal.SwapNotifier = TRUSTED {
DoShutDownEntryA: ENTRY PROC [m: POINTER TO MONITORLOCK]
RETURNS [needed: BOOL] = INLINE {
IF (needed _ state = turningOff) THEN {
state _ joining;
BROADCAST stateChange;
};
};
DoShutDownEntryB: ENTRY PROC [m: POINTER TO MONITORLOCK] = INLINE {
state _ off;
BROADCAST stateChange;
};
IF action = going AND DoShutDownEntryA[@terminalLock] THEN {
Process.Abort[keyboardWatcher];
JOIN keyboardWatcher;
JOIN timePainter;
inStream _ outStream _ NIL;
[] _ terminal.SetBWBitmapState[none];
DoShutDownEntryB[@terminalLock];
};
};


InputTimeout: PUBLIC SAFE SIGNAL = CODE;

SetInputTimeout: PUBLIC SAFE PROC [ticks: Process.Ticks] = TRUSTED {
SetInputTimeoutEntry: ENTRY PROC [m: POINTER TO MONITORLOCK] = INLINE {
IF ticks = 0 THEN Process.DisableTimeout[@charactersAvailable]
ELSE Process.SetTimeout[@charactersAvailable, ticks];
};
SetInputTimeoutEntry[@keyboardLock];
};


EnableCursorTracking: PUBLIC SAFE PROC = TRUSTED {
EnableEntry: ENTRY PROC [m: POINTER TO MONITORLOCK] = INLINE {
IF (noTrack _ noTrack - 1) = 0 THEN doBlink _ TRUE;
};
EnableEntry[@screenLock];
};

DisableCursorTracking: PUBLIC SAFE PROC = TRUSTED {
DisableEntry: ENTRY PROC [m: POINTER TO MONITORLOCK] = INLINE {
IF (noTrack _ noTrack + 1) ~= 0 THEN doBlink _ FALSE;
};
DisableEntry[@screenLock];
};



KeyArray: TYPE = MACHINE DEPENDENT RECORD [
SELECT OVERLAID * FROM
nb => [namedBits: Keys.KeyBits],
ub => [unnamedBits: KeyboardFace.KeyBits],
wds => [words: ARRAY [0..SIZE[Keys.KeyBits]) OF WORD],
ENDCASE
];

KeyItem: TYPE = RECORD [
letter: BOOL,
shiftCode: CHAR [0C..177C],
normalCode: CHAR [0C..377C]
];

KeyStation: TYPE = KeyboardFace.KeyStation;

lowestInterestingKey: KeyStation = 16;
highestInterestingKey: KeyStation = 75;

KeyTable: ARRAY [lowestInterestingKey..highestInterestingKey] OF KeyItem = [
[FALSE,  45C,  65C],  -- [16: k16] Five  %,5
[FALSE,  44C,  64C],  -- [17: k12] Four  $,4
[FALSE, 176C,  66C],  -- [18: k20] Six  ~,6
[TRUE,  105C, 145C],  -- [19: k10] E  E,e
[FALSE,  46C,  67C],  -- [20: k24] Seven  &,7
[TRUE,  104C, 144C],  -- [21: k11] D  D,d
[TRUE,  125C, 165C],  -- [22: k26] U  U,u
[TRUE,  126C, 166C],  -- [23: k17] V  V,v
[FALSE,  51C,  60C],  -- [24: k36] Zero  ),0
[TRUE,  113C, 153C],  -- [25: k31] K  K,k
[FALSE,  30C,  55C],  -- [26: k40] Dash  `,-
[TRUE,  120C, 160C],  -- [27: k38] P  P,p
[FALSE,  77C,  57C],  -- [28: k41] Slash  ?,/
[FALSE, 174C, 134C],  -- [29: T9] BackSlash  |,\
[FALSE,  12C,  12C],  -- [30: L6] LF  LF
[FALSE,  10C,  10C],  -- [31: A2] BS  BS
[FALSE,  43C,  63C],  -- [32: k8] Three  #,3
[FALSE, 100C,  62C],  -- [33: k4] Two  @,2
[TRUE,  127C, 167C],  -- [34: k6] W  W,w
[TRUE,  121C, 161C],  -- [35: k2] Q  Q,q
[TRUE,  123C, 163C],  -- [36: k7] S  S,s
[TRUE,  101C, 141C],  -- [37: k3] A  A,a
[FALSE,  50C,  71C],  -- [38: k32] Nine  (,9
[TRUE,  111C, 151C],  -- [39: k30] I  I,i
[TRUE,  130C, 170C],  -- [40: k9] X  X,x
[TRUE,  117C, 157C],  -- [41: k34] O  O,o
[TRUE,  114C, 154C],  -- [42: k35] L  L,l
[FALSE,  74C,  54C],  -- [43: k33] Comma <,,
[FALSE,  42C,  47C],  -- [44: k43] Quote ",'
[FALSE, 175C, 135C],  -- [45: k45] RightBracket },]
[FALSE,   0C,   0C],  -- [46: R11] Spare2
[FALSE,   0C,   0C],  -- [47: R6] Spare1
[FALSE,  41C,  61C],  -- [48: k1] One  !,1
[FALSE,  33C,  33C],  -- [49: T2] ESC  ESC
[FALSE,  11C,  11C],  -- [50: A1] TAB  TAB
[TRUE,  106C, 146C],  -- [51: k15] F  F,f
[FALSE,    0C,  0C],  -- [52: L11] Ctrl
[TRUE,  103C, 143C],  -- [53: k13] C  C,c
[TRUE,  112C, 152C],  -- [54: k27] J  J,j
[TRUE,  102C, 142C],  -- [55: k21] B  B,b
[TRUE,  132C, 172C],  -- [56: k5] Z  Z,z
[FALSE,    0C,  0C],  -- [57: A5] LeftShift
[FALSE,  76C,  56C],  -- [58: k37] Period  >,.
[FALSE,  72C,  73C],  -- [59: k39] SemiColon  :,;
[FALSE,  15C,  15C],  -- [60: A4] RETURN  CR
[FALSE, 136C, 137C],  -- [61: k46] Arrow  ^,_
[FALSE, 177C, 177C],  -- [62: L3] DEL  DEL
[FALSE,    0C,  0C],  -- [63: L9] FL3
[TRUE,  122C, 162C],  -- [64: k14] R  R,r
[TRUE,  124C, 164C],  -- [65: k18] T  T,t
[TRUE,  107C, 147C],  -- [66: k19] G  G,g
[TRUE,  131C, 171C],  -- [67: k22] Y  Y,y
[TRUE,  110C, 150C],  -- [68: k23] H  H,h
[FALSE,  52C,  70C],  -- [69: k28] Eight  *,8
[TRUE,  116C, 156C],  -- [70: k25] N  N,n
[TRUE,  115C, 155C],  -- [71: k29] M  M,m
[FALSE,   0C,   0C],  -- [72: A3] Lock
[FALSE,  40C,  40C],  -- [73: A7] Space  SP
[FALSE, 173C, 133C],  -- [74: k42] LeftBracket  {,[
[FALSE,  53C,  75C]];  -- [75: k44] Equal  +,=
                          -- [76: A6] RightShift
                          -- [77: R12] Spare3
                          -- [78: L12] FL4
                          -- [79: R1] FR5



keyboardLock: MONITORLOCK;

charactersAvailable: CONDITION;

in, out: NAT;
buffer: PACKED ARRAY NAT[0..50) OF CHAR;

ProcessKeyboard: PROC = {
old, new: KeyArray;
blinkCount: NAT _ 33;
GoAway: ENTRY PROC [m: POINTER TO MONITORLOCK] RETURNS [BOOL] = INLINE {
RETURN[state = joining]};
TrackCursor:  ENTRY PROC [m: POINTER TO MONITORLOCK] = INLINE {
mouse: Terminal.Position _ terminal.GetMousePosition[];
IF noTrack > 0 THEN RETURN;
mouse.x _ MIN[MAX[0, mouse.x], terminal.bwWidth];
mouse.y _ MIN[MAX[0, mouse.y], terminal.bwHeight];
terminal.SetBWCursorPosition[mouse];
terminal.SetMousePosition[mouse]
};
MakeCtrlChar: PROC [c: CHAR] RETURNS [CHAR] = INLINE {
RETURN[LOOPHOLE[PrincOpsUtils.BITAND[c, 37B]]]
};
AddToBuffer: ENTRY PROC [m: POINTER TO MONITORLOCK, c: CHAR] = INLINE {
newin: NAT _ in + 1;
IF newin = buffer.LENGTH THEN newin _ 0;
IF newin ~= out THEN {buffer[in] _ c; in _ newin};
};
in _ out _ 0;
Process.SetPriority[Process.priorityRealTime];
old.namedBits _ terminal.GetKeys[];
UNTIL GoAway[@terminalLock] DO
NotifyCharsAvailable: ENTRY PROC [m: POINTER TO MONITORLOCK] = INLINE {
BROADCAST charactersAvailable};
charsSeen: BOOL _ FALSE;
terminal.WaitForBWVerticalRetrace[ ! ABORTED => CONTINUE];
new.namedBits _ terminal.GetKeys[];
TrackCursor[@screenLock];
IF (blinkCount _ blinkCount - 1) = 0 THEN {BlinkCursor[]; blinkCount _ 34};
FOR i: NAT IN [0..SIZE[KeyArray]) DO
IF old.words[i] ~= new.words[i] THEN
FOR k: KeyStation IN [i*Basics.bitsPerWord..(i+1)*Basics.bitsPerWord) DO
char: CHAR;
entry: KeyItem;
IF ~(k IN [lowestInterestingKey..highestInterestingKey]) THEN LOOP;
IF new.unnamedBits[k] = up OR old.unnamedBits[k] = down THEN LOOP;
IF (char _ (entry _ KeyTable[k]).normalCode) ~= 0C THEN {
SELECT TRUE FROM
new.namedBits[Ctrl] = down =>
char _ MakeCtrlChar[char];
new.namedBits[LeftShift] = down, new.namedBits[RightShift] = down =>
char _ entry.shiftCode;
new.namedBits[Lock] = down AND entry.letter =>
char _ entry.shiftCode;
ENDCASE;
AddToBuffer[@keyboardLock, char];
charsSeen _ TRUE;
};
ENDLOOP;
ENDLOOP;
IF charsSeen THEN NotifyCharsAvailable[@keyboardLock];
old _ new;
ENDLOOP;
};


FontRecord: TYPE = MACHINE DEPENDENT RECORD [
newStyle(0:0..0): BOOL,
indexed(0:1..1): BOOL,
fixed(0:2..2): BOOL,
kerned(0:3..3): BOOL,
pad(0:4..15): [0..7777B],
min(1): CHAR,   -- limits of chars in font
max(2): CHAR,   -- limits of chars in font
maxwidth(3): NAT,
length(4): NAT,
ascent(5): NAT,
descent(6): NAT,
xoffset(7): NAT,
raster(8): NAT,
chars(9:0..63): SELECT OVERLAID * FROM
hasBoundingBox => [
boundingBox(9:0..63): RECORD [FontBBox, FontBBoy, FontBBdx, FontBBDy: INTEGER],
BBBitmap(13): ARRAY [0..0) OF WORD],
noBoundingBox => [bitmap(9): ARRAY [0..0) OF WORD],
ENDCASE
];

font: LONG POINTER TO FontRecord = GetFont[];

bitmap: LONG POINTER = IF font.kerned THEN @font.BBBitmap ELSE @font.bitmap;
height: NAT = font.ascent + font.descent;
xInSegment: LONG POINTER TO ARRAY CHAR [0C..0C) OF NAT =
bitmap + font.raster*height - (font.min-0C);

GetFont: PROC RETURNS [LONG POINTER] = {
Gacha10Strike: ARRAY [0..1142B) OF WORD = [
--   0--  100000B, 000040B, 000176B, 000007B, 001136B, 000010B, 000004B, 000000B,
--  10--  000052B, 000000B, 000001B, 000000B, 000000B, 000000B, 000000B, 000000B,
--  20--  000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B,
--  30--  000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B,
--  40--  000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B,
--  50--  000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B,
--  60--  000000B, 000000B, 017000B, 000040B, 120243B, 106204B, 004010B, 040100B,
--  70--  000000B, 000002B, 034040B, 160701B, 107616B, 037070B, 070000B, 000200B,
-- 100--  010034B, 034041B, 140707B, 107637B, 016104B, 070162B, 022010B, 110434B,
-- 110--  074161B, 160707B, 144221B, 021104B, 104761B, 141007B, 000000B, 000200B,
-- 120--  000040B, 001600B, 020010B, 010401B, 140000B, 000000B, 000000B, 000000B,
-- 130--  000000B, 000000B, 000060B, 103000B, 017000B, 000040B, 120245B, 052412B,
-- 140--  004020B, 020520B, 000000B, 000002B, 042141B, 011042B, 104021B, 001104B,
-- 150--  104000B, 000400B, 004042B, 042121B, 021044B, 044020B, 021104B, 020022B,
-- 160--  042015B, 114442B, 042211B, 011041B, 004221B, 021104B, 104021B, 001001B,
-- 170--  000000B, 000200B, 000040B, 002000B, 020000B, 000400B, 040000B, 000000B,
-- 200--  000000B, 000400B, 000000B, 000000B, 000100B, 100400B, 017000B, 000040B,
-- 210--  121765B, 054412B, 004020B, 020340B, 100000B, 000004B, 046241B, 010042B,
-- 220--  104020B, 002104B, 104100B, 101000B, 002042B, 056121B, 021044B, 044020B,
-- 230--  021104B, 020022B, 102015B, 114442B, 042211B, 011041B, 004221B, 025050B,
-- 240--  050041B, 000401B, 002010B, 034260B, 160643B, 107415B, 026070B, 070440B,
-- 250--  043313B, 007054B, 032260B, 161704B, 044221B, 021104B, 174100B, 100400B,
-- 260--  017000B, 000040B, 000503B, 001004B, 000040B, 010520B, 100000B, 000004B,
-- 270--  052040B, 020704B, 107436B, 002070B, 104100B, 102017B, 101004B, 052121B,
-- 300--  161004B, 047436B, 020174B, 020023B, 102012B, 112442B, 042211B, 160601B,
-- 310--  004212B, 025020B, 050101B, 000401B, 007020B, 002311B, 011144B, 042023B,
-- 320--  031010B, 010500B, 042514B, 110462B, 046311B, 010404B, 044221B, 012104B,
-- 330--  010100B, 100406B, 057000B, 000040B, 000501B, 101012B, 100040B, 010103B,
-- 340--  160017B, 100010B, 052040B, 040044B, 104221B, 004104B, 074000B, 002000B,
-- 350--  001010B, 052211B, 011004B, 044020B, 027104B, 020022B, 042012B, 112442B,
-- 360--  074211B, 040101B, 004212B, 025020B, 020101B, 000201B, 012476B, 036211B,
-- 370--  001047B, 142021B, 021010B, 010600B, 042510B, 110442B, 042200B, 140404B,
-- 400--  042425B, 004104B, 020100B, 100411B, 117000B, 000000B, 003745B, 042321B,
-- 410--  000040B, 010000B, 100000B, 000010B, 062040B, 100047B, 140221B, 004104B,
-- 420--  004000B, 001017B, 102000B, 056371B, 011044B, 044020B, 021104B, 020422B,
-- 430--  042012B, 111442B, 040211B, 021041B, 004212B, 012050B, 020201B, 000201B,
-- 440--  002020B, 042211B, 001044B, 002021B, 021010B, 010500B, 042510B, 110442B,
-- 450--  042200B, 020404B, 042425B, 004050B, 020600B, 100300B, 017000B, 000040B,
-- 460--  001205B, 042521B, 000040B, 010000B, 101400B, 002020B, 042041B, 001040B,
-- 470--  104221B, 010104B, 104101B, 100400B, 004010B, 040211B, 011044B, 044020B,
-- 500--  021104B, 020422B, 022012B, 111442B, 040211B, 011041B, 004204B, 012104B,
-- 510--  020401B, 000101B, 002010B, 042311B, 011144B, 042023B, 021010B, 010440B,
-- 520--  042510B, 110462B, 046201B, 010444B, 141012B, 012050B, 040100B, 100400B,
-- 530--  017000B, 000040B, 001203B, 104616B, 100040B, 010000B, 000400B, 002020B,
-- 540--  034371B, 170700B, 103416B, 010070B, 070100B, 100200B, 010010B, 036211B,
-- 550--  160707B, 107620B, 016104B, 070342B, 023710B, 110434B, 040161B, 010701B,
-- 560--  003404B, 012104B, 020761B, 000101B, 002000B, 036260B, 160643B, 102015B,
-- 570--  021010B, 010420B, 042510B, 107054B, 032200B, 160303B, 041012B, 021020B,
-- 600--  174100B, 100400B, 000000B, 000000B, 000001B, 000000B, 000020B, 020000B,
-- 610--  000400B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 100000B,
-- 620--  000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B,
-- 630--  000040B, 000000B, 000000B, 000000B, 000001B, 000001B, 000000B, 000000B,
-- 640--  000000B, 000001B, 000000B, 110000B, 000000B, 000040B, 002000B, 000000B,
-- 650--  000000B, 000020B, 000100B, 100400B, 000000B, 000000B, 000000B, 000000B,
-- 660--  000020B, 020000B, 001000B, 000000B, 000000B, 000000B, 000000B, 000000B,
-- 670--  000001B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B,
-- 700--  000000B, 000000B, 000030B, 000000B, 000000B, 000000B, 000001B, 000001B,
-- 710--  000000B, 000000B, 000000B, 000016B, 000000B, 060000B, 000000B, 000040B,
-- 720--  002000B, 000000B, 000000B, 000140B, 000100B, 100400B, 000000B, 000000B,
-- 730--  000000B, 000000B, 000010B, 040000B, 000000B, 000000B, 000000B, 000000B,
-- 740--  000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B,
-- 750--  000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B,
-- 760--  000001B, 140007B, 000000B, 000000B, 000000B, 000000B, 000000B, 000000B,
-- 770--  000000B, 000000B, 000000B, 000000B, 000000B, 000000B, 000060B, 103000B,
--1000--  012602B, 000000B, 000007B, 000016B, 000025B, 000034B, 000043B, 000052B,
--1010--  000061B, 000070B, 000077B, 000106B, 000115B, 000124B, 000133B, 000142B,
--1020--  000151B, 000160B, 000167B, 000176B, 000205B, 000214B, 000223B, 000232B,
--1030--  000241B, 000250B, 000257B, 000266B, 000275B, 000304B, 000313B, 000322B,
--1040--  000331B, 000340B, 000347B, 000356B, 000365B, 000374B, 000403B, 000412B,
--1050--  000421B, 000430B, 000437B, 000446B, 000455B, 000464B, 000473B, 000502B,
--1060--  000511B, 000520B, 000527B, 000536B, 000545B, 000554B, 000563B, 000572B,
--1070--  000601B, 000610B, 000617B, 000626B, 000635B, 000644B, 000653B, 000662B,
--1100--  000671B, 000700B, 000700B, 000707B, 000716B, 000725B, 000734B, 000743B,
--1110--  000752B, 000761B, 000770B, 000777B, 001006B, 001015B, 001024B, 001033B,
--1120--  001042B, 001051B, 001060B, 001067B, 001076B, 001105B, 001114B, 001123B,
--1130--  001132B, 001141B, 001150B, 001157B, 001166B, 001175B, 001204B, 001213B,
--1140--  001222B, 001230B];
p: LONG POINTER TO ARRAY [0..1142B) OF WORD _
PrincOpsUtils.Codebase[PrincOpsUtils.MyGlobalFrame[]];
DO
IF p[0] = Gacha10Strike[0] AND p^ = Gacha10Strike THEN RETURN[p];
p _ p+1;
ENDLOOP;
};




screenLock: MONITORLOCK;

noTrack: CARDINAL _ 0;
doBlink: BOOL _ FALSE;

bbTable: PrincOps.BBTableSpace;
bbPtr: PrincOps.BBptr = PrincOpsUtils.AlignedBBTable[@bbTable];

charPos, line, nCharPos, nLines: NAT;
usableHeight, usableWidth: NAT;
firstLine, thisLine: PrincOps.BitAddress;
bitsPerTextLine: NAT;  -- = screenWidth*font.height

nameStripeOrg: PrincOps.BitAddress;
nameStripeWidth: NAT;


GetBitAddress: PROC [p: LONG POINTER, o: LONG CARDINAL] RETURNS [PrincOps.BitAddress] = {
RETURN[[p+o/16, 0, o MOD 16]]
};

InitScreen: PROC [nameStripe: ROPE] = {
borderWidth: NAT = 16;
boxWidth: NAT = 1;
marginWidth: NAT = 8;
org: PrincOps.BitAddress;
InitBitmap: PROC = {
zero: CARDINAL _ 0;
bbPtr.src _ [@zero, 0, 0];
bbPtr.srcDesc _ [gray[[0, 0, 0, 0]]];
bbPtr.flags _ [gray: TRUE];
PrincOpsUtils.BITBLT[bbPtr];
};
MakeBorder: PROC [w: NAT] = {
stipple: ARRAY [0..3] OF CARDINAL _ [104210B, 104210B, 021042B, 021042B];
bbPtr.src _ [@stipple, 0, 0];
bbPtr.srcDesc _ [gray[[yOffset: 0, widthMinusOne: 0, heightMinusOne: 3]]];
bbPtr.flags _ [gray: TRUE];
bbPtr.dst _ org;
bbPtr.width _ usableWidth;
bbPtr.height _ w;
PrincOpsUtils.BITBLT[bbPtr];
bbPtr.dst _ GetBitAddress[org.word, org.bit+LONG[bbPtr.dstBpl]*(usableHeight-w)];
PrincOpsUtils.BITBLT[bbPtr];
bbPtr.dst _ GetBitAddress[org.word, org.bit+LONG[bbPtr.dstBpl]*w];
bbPtr.width _ w;
bbPtr.height _ usableHeight - w - w;
PrincOpsUtils.BITBLT[bbPtr];
bbPtr.dst _ GetBitAddress[org.word, org.bit+LONG[bbPtr.dstBpl]*w+usableWidth-w];
PrincOpsUtils.BITBLT[bbPtr];
org _ GetBitAddress[org.word, org.bit+LONG[bbPtr.dstBpl]*w+w];
usableHeight _ usableHeight - w - w;
usableWidth _ usableWidth - w - w;
};
MakeBox: PROC [w: NAT] = {
black: CARDINAL _ 177777B;
bbPtr.src _ [@black, 0, 0];
bbPtr.srcDesc _ [gray[[yOffset: 0, widthMinusOne: 0, heightMinusOne: w-1]]];
bbPtr.flags _ [gray: TRUE];
bbPtr.dst _ org;
bbPtr.width _ usableWidth;
bbPtr.height _ w;
PrincOpsUtils.BITBLT[bbPtr];
bbPtr.dst _ GetBitAddress[org.word, org.bit+LONG[bbPtr.dstBpl]*(usableHeight-w)];
PrincOpsUtils.BITBLT[bbPtr];
bbPtr.dst _ GetBitAddress[org.word, org.bit+LONG[bbPtr.dstBpl]*w];
bbPtr.width _ w;
bbPtr.height _ usableHeight-w-w;
PrincOpsUtils.BITBLT[bbPtr];
bbPtr.dst _ GetBitAddress[org.word, org.bit+LONG[bbPtr.dstBpl]*w+usableWidth-w];
PrincOpsUtils.BITBLT[bbPtr];
org _ GetBitAddress[org.word, org.bit+LONG[bbPtr.dstBpl]*w+w];
usableHeight _ usableHeight - w - w;
usableWidth _ usableWidth - w - w;
};
MakeNameStripe: PROC [nameStripe: ROPE] = {
black: CARDINAL _ 177777B;
systemVolume: File.Volume = File.SystemVolume[];
volumeLabel: ROPE =
IF systemVolume = NIL THEN "No System Volume"
ELSE File.GetVolumeName[systemVolume];
nameStripeOrg _ org;
nameStripeWidth _ usableWidth;
bbPtr.dst _ GetBitAddress[org.word, org.bit+marginWidth];
bbPtr.srcDesc _ [srcBpl[font.raster*16]];
bbPtr.height _ height;
bbPtr.width _ font.maxwidth;
bbPtr.flags _ [];
FOR i: CARDINAL IN CARDINAL[0..nameStripe.Length[]) DO
bbPtr.src _ GetBitAddress[bitmap, xInSegment[nameStripe.Fetch[i]]];
PrincOpsUtils.BITBLT[bbPtr];
bbPtr.dst _ GetBitAddress[bbPtr.dst.word, bbPtr.dst.bit+font.maxwidth];
ENDLOOP;
bbPtr.dst _ GetBitAddress[org.word,
org.bit+usableWidth-marginWidth-volumeLabel.Length[]*font.maxwidth];
FOR i: CARDINAL IN CARDINAL[0..volumeLabel.Length[]) DO
bbPtr.src _ GetBitAddress[bitmap, xInSegment[volumeLabel.Fetch[i]]];
PrincOpsUtils.BITBLT[bbPtr];
bbPtr.dst _ GetBitAddress[bbPtr.dst.word, bbPtr.dst.bit+font.maxwidth];
ENDLOOP;
bbPtr.src _ [@black, 0, 0];
bbPtr.srcDesc _ [gray[[yOffset: 0, widthMinusOne: 0, heightMinusOne: 0]]];
bbPtr.flags _ [gray: TRUE, dstFunc: xor];
bbPtr.dst _ org;
bbPtr.width _ usableWidth;
bbPtr.height _ height;
PrincOpsUtils.BITBLT[bbPtr];
org _ GetBitAddress[org.word, org.bit+LONG[bbPtr.dstBpl]*height];
usableHeight _ usableHeight - height;
timePainter _ FORK MaintainTime[];
};
[] _ terminal.SetBWBackground[white];
[] _ terminal.SetBWBitmapState[allocated];
bbPtr^ _ terminal.GetBitBltTable[];
org _ bbPtr.dst;
usableHeight _ bbPtr.height;
usableWidth _ bbPtr.width;
InitBitmap[];
MakeBorder[borderWidth];
MakeBox[boxWidth];
MakeNameStripe[nameStripe];
[] _ terminal.SetBWBitmapState[displayed];
usableHeight _ usableHeight - 2*marginWidth;
usableWidth _ usableWidth - 2*marginWidth;
bitsPerTextLine _ bbPtr.dstBpl*height;
firstLine _ 
GetBitAddress[org.word, org.bit+LONG[marginWidth]*bbPtr.dstBpl+marginWidth];
nCharPos _ usableWidth/font.maxwidth;
nLines _ usableHeight/height;
InitPainting[];
};

MaintainTime: PROC = {
GoAway: ENTRY PROC [m: POINTER TO MONITORLOCK] RETURNS [BOOLEAN] = INLINE {
RETURN[state = joining]};
bbTable: PrincOps.BBTableSpace;
bbPtr: PrincOps.BBptr = PrincOpsUtils.AlignedBBTable[@bbTable];
black: CARDINAL _ 177777B;
date: ROPE _ NIL;
dateLength: NAT _ 0;
secondsOrg: PrincOps.BitAddress;
lastMinutes: INT _ 0;
SetToBlacken: PROC = {
bbPtr.src _ [@black, 0, 0];
bbPtr.srcDesc _ [gray[[yOffset: 0, widthMinusOne: 0, heightMinusOne: 0]]];
bbPtr.flags _ [gray: TRUE]};
PaintTime: PROC = {
current: BasicTime.GMT = BasicTime.Now[];
secondsSinceGenesis: INT = BasicTime.Period[from: BasicTime.earliestGMT, to: current];
minutesSinceGenesis: INT = secondsSinceGenesis/60;
IF lastMinutes = minutesSinceGenesis THEN {
seconds: [0..59] _ secondsSinceGenesis MOD 60;
SetToBlacken[];
bbPtr.dst _ secondsOrg;
bbPtr.width _ 2*font.maxwidth;
bbPtr.height _ height;
PrincOpsUtils.BITBLT[bbPtr];
bbPtr.srcDesc _ [srcBpl[font.raster*16]];
bbPtr.width _ font.maxwidth;
bbPtr.flags _ [srcFunc: complement];
bbPtr.src _ GetBitAddress[bitmap, xInSegment['0+seconds/10]];
PrincOpsUtils.BITBLT[bbPtr];
bbPtr.dst _ GetBitAddress[bbPtr.dst.word, bbPtr.dst.bit+font.maxwidth];
bbPtr.src _ GetBitAddress[bitmap, xInSegment['0+seconds MOD 10]];
PrincOpsUtils.BITBLT[bbPtr]}
ELSE {
SetToBlacken[];
bbPtr.dst _ GetBitAddress[nameStripeOrg.word,
nameStripeOrg.bit+(nameStripeWidth-dateLength*font.maxwidth)/2];
bbPtr.width _ dateLength*font.maxwidth;
bbPtr.height _ height;
PrincOpsUtils.BITBLT[bbPtr];
date _ Convert.RopeFromTime[from: current, start: years, end: seconds,
includeDayOfWeek: TRUE, useAMPM: FALSE, includeZone: TRUE];
dateLength _ date.Length[];
bbPtr.dst _ GetBitAddress[nameStripeOrg.word,
nameStripeOrg.bit+(nameStripeWidth-dateLength*font.maxwidth)/2];
secondsOrg _ GetBitAddress[bbPtr.dst.word, bbPtr.dst.bit+(dateLength-2)*font.maxwidth];
bbPtr.srcDesc _ [srcBpl[font.raster*16]];
bbPtr.width _ font.maxwidth;
bbPtr.flags _ [srcFunc: complement];
FOR i: CARDINAL IN [0..dateLength) DO
bbPtr.src _ GetBitAddress[bitmap, xInSegment[date.Fetch[i]]];
PrincOpsUtils.BITBLT[bbPtr];
bbPtr.dst _ GetBitAddress[bbPtr.dst.word, bbPtr.dst.bit+font.maxwidth];
ENDLOOP;
};
lastMinutes _ minutesSinceGenesis;
};
Process.SetPriority[Process.priorityForeground];
bbPtr^ _ terminal.GetBitBltTable[];
UNTIL GoAway[@terminalLock] DO
PaintTime[];
Process.Pause[Process.SecondsToTicks[1]];
ENDLOOP;
};

InitPainting: PROC = {
charPos _ 0; line _ 1;
bbPtr.dst _ thisLine _ firstLine;
bbPtr.srcDesc _ [srcBpl[font.raster*16]];
bbPtr.height _ height;
bbPtr.width _ font.maxwidth;
bbPtr.flags _ [];
};

ClearThisChar: INTERNAL PROC = {
zero: CARDINAL _ 0;
bbPtr.src _ [@zero, 0, 0];
bbPtr.srcDesc _ [gray[[0, 0, 0, 0]]];
bbPtr.flags _ [gray: TRUE];
PrincOpsUtils.BITBLT[bbPtr];
bbPtr.srcDesc _ [srcBpl[font.raster*16]];
bbPtr.flags _ [];
};

DisplayChar: INTERNAL PROC [c: CHAR] = {
Backup: INTERNAL PROC = {
t: NAT = bbPtr.dst.bit+16-font.maxwidth;
IF charPos=0 THEN RETURN;
charPos _ charPos - 1;
bbPtr.dst.word _ bbPtr.dst.word + t/16 - 1;
bbPtr.dst.bit _ t MOD 16;
};
ClearScreen: PROC = {
zero: CARDINAL _ 0;
bbPtr.dst _ firstLine;
bbPtr.src _ [@zero, 0, 0];
bbPtr.srcDesc _ [gray[[0, 0, 0, 0]]];
bbPtr.flags _ [gray: TRUE];
bbPtr.height _ usableHeight;
bbPtr.width _ usableWidth;
PrincOpsUtils.BITBLT[bbPtr];
InitPainting[];
};
Newline: INTERNAL PROC = {
IF line < nLines THEN
{thisLine _ GetBitAddress[thisLine.word, thisLine.bit+bitsPerTextLine]; line _ line+1}
ELSE {
zero: CARDINAL _ 0;
sBBTable: PrincOps.BBTableSpace;
sbbPtr: PrincOps.BBptr = PrincOpsUtils.AlignedBBTable[@sBBTable];
sbbPtr^ _ [
dst: firstLine, dstBpl: bbPtr.dstBpl,
src: GetBitAddress[firstLine.word, firstLine.bit+bitsPerTextLine],
srcDesc: [srcBpl[bbPtr.dstBpl]], flags: [direction: forward],
width: nCharPos*font.maxwidth, height: height*(nLines-1)];
PrincOpsUtils.BITBLT[sbbPtr];
sbbPtr^ _ [
dst: thisLine, src: [@zero, 0, 0],
dstBpl: bbPtr.dstBpl, srcDesc: [gray[[0, 0, 0, 0]]],
width: nCharPos*font.maxwidth, height: height,
flags: [gray: TRUE]];
PrincOpsUtils.BITBLT[sbbPtr];
};
bbPtr.dst _ thisLine;
charPos _ 0;
};
SELECT c FROM
IN (Ascii.SP..'~] => {
IF ~(c IN [font.min..font.max]) THEN c _ font.max + 1;
bbPtr.src _ GetBitAddress[bitmap, xInSegment[c]];
PrincOpsUtils.BITBLT[bbPtr];
};
Ascii.SP => NULL;
Ascii.CR => {Newline[]; RETURN};
Ascii.BS => {Backup[]; ClearThisChar[]; RETURN};
Ascii.TAB => {UNTIL charPos MOD 8 = 0 DO DisplayChar[Ascii.SP]; ENDLOOP; RETURN};
Ascii.FF => {ClearScreen[]; RETURN};
IN [0C..Ascii.SP) => {DisplayChar['^]; DisplayChar[c+('A-1C)]; RETURN};
ENDCASE => RETURN;
IF (charPos _ charPos + 1) >= nCharPos THEN Newline[]
ELSE bbPtr.dst _ GetBitAddress[bbPtr.dst.word, bbPtr.dst.bit + font.maxwidth];
};

BlinkCursor: PROC = {
BlinkCursorEntry: ENTRY PROC [m: POINTER TO MONITORLOCK] = {
blinker: CARDINAL _ 60000B;
IF doBlink THEN {
bbPtr.src _ [@blinker, 0, 0];
bbPtr.srcDesc _ [gray[[0, 0, 0, 0]]];
bbPtr.flags _ [gray: TRUE, dstFunc: xor];
PrincOpsUtils.BITBLT[bbPtr];
bbPtr.srcDesc _ [srcBpl[font.raster*16]];
bbPtr.flags _ [];
};
};
IF doBlink THEN BlinkCursorEntry[@screenLock];
};


CreateStreams: PROC = {
};

CharsAvail: SAFE PROC [self: IO.STREAM, wait: BOOL] RETURNS [INT] = TRUSTED {
CharsAvailEntry: ENTRY PROC [m: POINTER TO MONITORLOCK] RETURNS [BOOL] =
INLINE {RETURN[in ~= out]};
RETURN[IF CharsAvailEntry[@keyboardLock] THEN 1 ELSE 0]
};

EndOf: SAFE PROC [self: IO.STREAM] RETURNS [BOOL] = CHECKED {RETURN[FALSE]};

GetChar: SAFE PROC [self: IO.STREAM] RETURNS [c: CHAR] = TRUSTED {
GetEntry: ENTRY PROC [m: POINTER TO MONITORLOCK] RETURNS [BOOL] = INLINE {
ENABLE UNWIND => NULL;
WHILE in = out DO
WAIT charactersAvailable;
IF in = out THEN RETURN[FALSE];
ENDLOOP;
c _ buffer[out];
IF (out _ out + 1) = buffer.LENGTH THEN out _ 0;
RETURN[TRUE]
};
UNTIL GetEntry[@keyboardLock] DO SIGNAL InputTimeout; ENDLOOP;
};

PutChar: SAFE PROC [self: IO.STREAM, char: CHAR] = TRUSTED {
PutCharEntry: ENTRY PROC [m: POINTER TO MONITORLOCK] = INLINE {
doBlink _ FALSE;
ClearThisChar[];  -- to get rid of possible blinker
DisplayChar[char];
doBlink _ TRUE;
};
PutCharEntry[@screenLock];
};

EraseChar: SAFE PROC [self: IO.STREAM, char: CHAR] = TRUSTED {
EraseCharEntry: ENTRY PROC [m: POINTER TO MONITORLOCK] = INLINE {
doBlink _ FALSE;
ClearThisChar[];  -- to get rid of possible blinker
DisplayChar[Ascii.BS];
doBlink _ TRUE;
};
EraseCharEntry[@screenLock];
};




inStreamProcs: REF IO.StreamProcs;
outStreamProcs: REF IO.StreamProcs;

Initialize: ENTRY PROC [m: POINTER TO MONITORLOCK] = {
IF ~font.newStyle OR font.indexed OR ~(font.min IN [0C..177C])
OR ~(font.max+1 IN [0C..177C]) THEN ERROR;
inStreamProcs _ IO.CreateStreamProcs[
variety: $input, class: $SimpleTerminal,
getChar: GetChar,
endOf: EndOf,
charsAvail: CharsAvail
];
outStreamProcs _ IO.CreateStreamProcs[
variety: $output, class: $SimpleTerminal,
putChar: PutChar,
eraseChar: EraseChar
];
terminal _ Terminal.Current[];
terminal.RegisterNotifier[DoShutDown];
};

Initialize[@terminalLock];
END.



nSimpleTerminalImpl.mesa
Derived from SimpleTTY.mesa last edited by Forrest January 6, 1981  7:28 PM 
last edited by Levin on December 15, 1983 4:40 pm
last edited by McGregor on April 22, 1982 4:23 pm
Last Edited by: Birrell, July 7, 1983 3:20 pm
Last Edited by: MBrown, September 17, 1983 8:18 pm
Constraints to satisfy externally:
A statevector is needed at priority 6 for the keyboard watching process, at least until facilities exist to let it allocate one itself.
If keyboard watcher is to avoid faults, its code and global frame should be pinned.
Global variables protected by "terminalLock"

Exported to SimpleTerminal
Shutdown was deferred and is still pending.  We simply cancel it.
The following is intended to be TRUE when the terminal that was current at the time TurnOn was called has a screen displayed.  It is therefore more interesting than ours and we should shut our screen down now and make its visible again.  If there wasn't a visible screen when TurnOn was called and we are still the current terminal, we leave our screen visible until someone else invokes Terminal.Select.  

Keyboard Definitions
                          -- [bit number: KeyStation] KeyName  Ascii codes
                          -- [0: ] 
                          -- [1: ] 
                          -- [2: ] 
                          -- [3: ] 
                          -- [4: ] 
                          -- [5: ] 
                          -- [6: ] 
                          -- [7: ] 
                          -- [8: KS1] Keyset1
                          -- [9: KS2] Keyset2
                          -- [10: KS3] Keyset3
                          -- [11: KS4] Keyset4
                          -- [12: KS5] Keyset5
                          -- [13: M1] Red
                          -- [14: M3] Blue
                          -- [15: M2] Yellow
                          -- [80: R5] R5
                          -- [81: R9] R9
                          -- [82: L10] L10
                          -- [83: L7] L7
                          -- [84: L4] L4
                          -- [85: L1] L1
                          -- [86: A9] A9
                          -- [87: R10] R10
                          -- [88: A8] A8
                          -- [89: L8] L8
                          -- [90: L5] L5
                          -- [91: L2] L2
                          -- [92: R2] R2
                          -- [93: R7] R7
                          -- [94: R4] R4
                          -- [95: D2] D2
                          -- [96: D1] D1
                          -- [97: k48] Key48
                          -- [98: T1] T1
                          -- [99: T3] T3
                          -- [100: T4] T4
                          -- [101: T5] T5
                          -- [102: T6] T6
                          -- [103: T7] T7
                          -- [104: T8] T8
                          -- [105: T10] T10
                          -- [106: R3] R3
                          -- [107: k47] Key47
                          -- [108: A10] A10
                          -- [109: R8] R8
                          -- [110: A11] 
                          -- [111: A12] 

Keyboard Implementation

Global variables protected by "keyboardLock"

Font Definitions
Note:  Even though it doesn't say so in its strike header, this is a fixed-width
font.  Bitter experience has shown that not all Gacha10.strike font files are, in
fact, fixed width.  You need to painstakingly examine the xInSegment table for
the truth.
The following hack finds the address of constant array Gacha10Strike in the code segment and returns it.  This is slightly unethical, but it saves duplicate allocation.

Display Implementation
Global variables protected by "screenLock"
bbPtr.dst, bbPtr.height, and bbPtr.width are set up
bbPtr.dstBpl never changes
top stripe
bottom stripe
left side
right side
top stripe
bottom stripe
left side
right side
paint version text
paint volume name
overlay with stripe
now display the bitmap
bbPtr.dst & bbPtr.height still OK
set up standard arguments for character painting
bbPtr.dstBpl already set up
bbPtr.src set when proc called

IO Streams implementation
Initialization


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