This repository has been archived by the owner on Jun 26, 2024. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 4
/
drivers.pas
1596 lines (1428 loc) · 70 KB
/
drivers.pas
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
{********[ 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}
{$endif}
USES
{$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}
doslib,
{$ENDIF}
video,
SysMsg,
FVCommon, Objects; { GFV standard units }
{***************************************************************************}
{ 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);
{-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;
{---------------------------------------------------------------------------}
{ 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}
{$IFDEF OS_AMIGA}
begin
{$WARNING FIXME: dummy implementation}
GetDosTicks:=-1;
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}
{$IFDEF OS_AMIGA}
begin
{ AmigaOS Delay() wait's argument in 1/50 seconds }
DOSLib.Delay(2);
end;
{$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;
BEGIN
J := 0; { Set result to zero }
For I := 1 To Length(S) Do
If (S[I] <> '~') Then Inc(J); { Inc count if not ~ }
CStrLen := J; { Return length }
END;
{---------------------------------------------------------------------------}
{ MoveStr -> Platforms DOS/DPMI/WIN/NT/OS2 - Updated 10Jul99 LdB }
{---------------------------------------------------------------------------}
PROCEDURE MoveStr (Var Dest; Const Str: String; Attr: Byte);
VAR I: Word; P: PWord;
BEGIN
For I := 1 To Length(Str) Do Begin { For each character }
P := @TWordArray(Dest)[I-1]; { Pointer to Sw_Word }
If (Attr <> 0) Then WordRec(P^).Hi := Attr; { Copy attribute }
WordRec(P^).Lo := Byte(Str[I]); { Copy string char }
End;
END;
{---------------------------------------------------------------------------}
{ MoveCStr -> Platforms DOS/DPMI/WIN/NT/OS2 - Updated 10Jul99 LdB }
{---------------------------------------------------------------------------}
PROCEDURE MoveCStr (Var Dest; Const Str: String; Attrs: Word);
VAR B: Byte; I, J: Sw_Word; P: PWord;
BEGIN
J := 0; { Start position }
For I := 1 To Length(Str) Do Begin { For each character }
If (Str[I] <> '~') Then Begin { Not tilde character }
P := @TWordArray(Dest)[J]; { Pointer to Sw_Word }
If (Lo(Attrs) <> 0) Then
WordRec(P^).Hi := Lo(Attrs); { Copy attribute }
WordRec(P^).Lo := Byte(Str[I]); { Copy string char }
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;
{---------------------------------------------------------------------------}
{ MoveBuf -> Platforms DOS/DPMI/WIN/NT/OS2 - Updated 10Jul99 LdB }
{---------------------------------------------------------------------------}
PROCEDURE MoveBuf (Var Dest, Source; Attr: Byte; Count: Sw_Word);
VAR I: Word; P: PWord;
BEGIN
For I := 1 To Count Do Begin
P := @TWordArray(Dest)[I-1]; { Pointer to Sw_Word }
If (Attr <> 0) Then WordRec(P^).Hi := Attr; { Copy attribute }
WordRec(P^).Lo := TByteArray(Source)[I-1]; { Copy source data }
End;
END;
{---------------------------------------------------------------------------}
{ MoveChar -> Platforms DOS/DPMI/WIN/NT/OS2 - Updated 10Jul99 LdB }
{---------------------------------------------------------------------------}
PROCEDURE MoveChar (Var Dest; C: Char; Attr: Byte; Count: Sw_Word);
VAR I: Word; P: PWord;
BEGIN
For I := 1 To Count Do Begin
P := @TWordArray(Dest)[I-1]; { Pointer to Sw_Word }
If (Attr <> 0) Then WordRec(P^).Hi := Attr; { Copy attribute }
If (Ord(C) <> 0) Then WordRec(P^).Lo := Byte(C); { Copy character }
End;
END;
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{ KEYBOARD SUPPORT ROUTINES }
{+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}
{---------------------------------------------------------------------------}
{ GetAltCode -> Platforms DOS/DPMI/WIN/NT/OS2 - Updated 25May96 LdB }
{---------------------------------------------------------------------------}
FUNCTION GetAltCode (Ch: Char): Word;
BEGIN
GetAltCode := 0; { Preset zero return }
Ch := UpCase(Ch); { Convert upper case }
If (Ch < #128) Then
GetAltCode := AltCodes[Ord(Ch)] SHL 8 { Return code }
Else If (Ch = #240) Then GetAltCode := $0200 { Return code }
Else GetAltCode := 0; { Return zero }
END;
{---------------------------------------------------------------------------}
{ GetCtrlCode -> Platforms DOS/DPMI/WIN/NT/OS2 - Updated 25May96 LdB }
{---------------------------------------------------------------------------}
FUNCTION GetCtrlCode (Ch: Char): Word;
BEGIN
GetCtrlCode := GetAltCode(Ch) OR (Ord(Ch) - $40); { Ctrl+key code }
END;
{---------------------------------------------------------------------------}
{ GetAltChar -> Platforms DOS/DPMI/WIN/NT/OS2 - Updated 25May96 LdB }
{---------------------------------------------------------------------------}
FUNCTION GetAltChar (KeyCode: Word): Char;
VAR I: Sw_Integer;