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
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/*
* This code is based on Labyrinth of Time code with assistance of
*
* Copyright (c) 1993 Terra Nova Development
* Copyright (c) 2004 The Wyrmkeep Entertainment Co.
*
*/
#include "graphics/palette.h"
#include "lab/lab.h"
#include "lab/anim.h"
#include "lab/dispman.h"
#include "lab/eventman.h"
#include "lab/interface.h"
#include "lab/music.h"
#include "lab/image.h"
#include "lab/resource.h"
#include "lab/utils.h"
namespace Lab {
DisplayMan::DisplayMan(LabEngine *vm) : _vm(vm) {
_longWinInFront = false;
_lastMessageLong = false;
_doNotDrawMessage = false;
_screenBytesPerPage = 65536;
_curapen = 0;
_curBitmap = nullptr;
_displayBuffer = nullptr;
_currentDisplayBuffer = nullptr;
FadePalette = nullptr;
_screenWidth = 0;
_screenHeight = 0;
for (int i = 0; i < 256 * 3; i++)
_curvgapal[i] = 0;
_dispBitMap = new BitMap;
}
DisplayMan::~DisplayMan() {
freePict();
delete _dispBitMap;
}
// From readPict.c. Reads in pictures and animations from disk.
void DisplayMan::loadPict(const char *filename) {
Common::File *bitmapFile = _vm->_resource->openDataFile(filename);
freePict();
_curBitmap = new byte[bitmapFile->size()];
bitmapFile->read(_curBitmap, bitmapFile->size());
delete bitmapFile;
}
/**
* Reads in a picture into the dest bitmap.
*/
void DisplayMan::readPict(const char *filename, bool playOnce, bool onlyDiffData) {
_vm->_anim->stopDiff();
loadPict(filename);
_vm->_music->updateMusic();
if (!_vm->_music->_doNotFilestopSoundEffect)
_vm->_music->stopSoundEffect();
_dispBitMap->_bytesPerRow = _screenWidth;
_dispBitMap->_rows = _screenHeight;
_dispBitMap->_flags = BITMAPF_VIDEO;
_vm->_anim->readDiff(_curBitmap, playOnce, onlyDiffData);
}
/**
* Reads in a picture into buffer memory.
*/
byte *DisplayMan::readPictToMem(const char *filename, uint16 x, uint16 y) {
_vm->_anim->stopDiff();
loadPict(filename);
_vm->_music->updateMusic();
if (!_vm->_music->_doNotFilestopSoundEffect)
_vm->_music->stopSoundEffect();
_dispBitMap->_bytesPerRow = x;
_dispBitMap->_rows = y;
_dispBitMap->_flags = BITMAPF_NONE;
_dispBitMap->_planes[0] = _curBitmap;
_dispBitMap->_planes[1] = _dispBitMap->_planes[0] + 0x10000;
_dispBitMap->_planes[2] = _dispBitMap->_planes[1] + 0x10000;
_dispBitMap->_planes[3] = _dispBitMap->_planes[2] + 0x10000;
_dispBitMap->_planes[4] = _dispBitMap->_planes[3] + 0x10000;
_vm->_anim->readDiff(_curBitmap, true);
return _curBitmap;
}
void DisplayMan::freePict() {
delete _curBitmap;
_curBitmap = NULL;
}
//---------------------------------------------------------------------------
//------------ Does all the text rendering to the message boxes. ------------
//---------------------------------------------------------------------------
/**
* Extracts the first word from a string.
*/
void DisplayMan::getWord(char *wordBuffer, const char *mainBuffer, uint16 *wordWidth) {
uint16 width = 0;
while ((mainBuffer[width] != ' ') && mainBuffer[width] && (mainBuffer[width] != '\n')) {
wordBuffer[width] = mainBuffer[width];
width++;
}
wordBuffer[width] = 0;
*wordWidth = width;
}
/**
* Gets a line of text for flowText; makes sure that its length is less than
* or equal to the maximum width.
*/
void DisplayMan::getLine(TextFont *tf, char *lineBuffer, const char **mainBuffer, uint16 lineWidth) {
uint16 curWidth = 0, wordWidth;
char wordBuffer[100];
bool doit = true;
lineWidth += textLength(tf, " ", 1);
lineBuffer[0] = 0;
while ((*mainBuffer)[0] && doit) {
getWord(wordBuffer, *mainBuffer, &wordWidth);
strcat(wordBuffer, " ");
if ((curWidth + textLength(tf, wordBuffer, wordWidth + 1)) <= lineWidth) {
strcat(lineBuffer, wordBuffer);
(*mainBuffer) += wordWidth;
if ((*mainBuffer)[0] == '\n')
doit = false;
if ((*mainBuffer)[0])
(*mainBuffer)++;
curWidth = textLength(tf, lineBuffer, strlen(lineBuffer));
} else
doit = false;
}
}
/**
* Dumps a chunk of text to an arbitrary box; flows it within that box and
* optionally centers it. Returns the number of characters that were
* processed.
* Note: Every individual word MUST be int16 enough to fit on a line, and
* each line less than 255 characters.
*/
uint32 DisplayMan::flowText(
void *font, // the TextAttr pointer
int16 spacing, // How much vertical spacing between the lines
byte pencolor, // pen number to use for text
byte backpen, // the background color
bool fillback, // Whether to fill the background
bool centerh, // Whether to center the text horizontally
bool centerv, // Whether to center the text vertically
bool output, // Whether to output any text
uint16 x1, uint16 y1, // Cords
uint16 x2, uint16 y2,
const char *str) { // The text itself
TextFont *_msgFont = (TextFont *)font;
char linebuffer[256];
const char *temp;
uint16 numlines, actlines, fontheight, width;
uint16 x, y;
if (fillback) {
setAPen(backpen);
rectFill(x1, y1, x2, y2);
}
if (str == NULL)
return 0L;
setAPen(pencolor);
fontheight = textHeight(_msgFont) + spacing;
numlines = (y2 - y1 + 1) / fontheight;
width = x2 - x1 + 1;
y = y1;
if (centerv && output) {
temp = str;
actlines = 0;
while (temp[0]) {
getLine(_msgFont, linebuffer, &temp, width);
actlines++;
}
if (actlines <= numlines)
y += ((y2 - y1 + 1) - (actlines * fontheight)) / 2;
}
temp = str;
while (numlines && str[0]) {
getLine(_msgFont, linebuffer, &str, width);
x = x1;
if (centerh)
x += (width - textLength(_msgFont, linebuffer, strlen(linebuffer))) / 2;
if (output)
text(_msgFont, x, y, pencolor, linebuffer, strlen(linebuffer));
numlines--;
y += fontheight;
}
return (str - temp);
}
uint32 DisplayMan::flowTextScaled(
void *font, // the TextAttr pointer
int16 spacing, // How much vertical spacing between the lines
byte penColor, // pen number to use for text
byte backPen, // the background color
bool fillBack, // Whether to fill the background
bool centerX, // Whether to center the text horizontally
bool centerY, // Whether to center the text vertically
bool output, // Whether to output any text
uint16 x1, uint16 y1, // Cords
uint16 x2, uint16 y2,
const char *str) {
return flowText(font, spacing, penColor, backPen, fillBack, centerX, centerY, output,
_vm->_utils->vgaScaleX(x1), _vm->_utils->vgaScaleY(y1),
_vm->_utils->vgaScaleX(x2), _vm->_utils->vgaScaleY(y2), str);
}
/**
* Calls flowText, but flows it to memory. Same restrictions as flowText.
*/
uint32 DisplayMan::flowTextToMem(Image *destIm,
void *font, // the TextAttr pointer
int16 spacing, // How much vertical spacing between the lines
byte pencolor, // pen number to use for text
byte backpen, // the background color
bool fillback, // Whether to fill the background
bool centerh, // Whether to center the text horizontally
bool centerv, // Whether to center the text vertically
bool output, // Whether to output any text
uint16 x1, uint16 y1, // Cords
uint16 x2, uint16 y2,
const char *str) { // The text itself
uint32 res, vgabyte = _screenBytesPerPage;
byte *tmp = _currentDisplayBuffer;
_currentDisplayBuffer = destIm->_imageData;
_screenBytesPerPage = (uint32)destIm->_width * (int32)destIm->_height;
res = flowText(font, spacing, pencolor, backpen, fillback, centerh, centerv, output, x1, y1, x2, y2, str);
_screenBytesPerPage = vgabyte;
_currentDisplayBuffer = tmp;
return res;
}
//----- The control panel stuff -----
void DisplayMan::createBox(uint16 y2) {
// Message box area
setAPen(7);
rectFillScaled(4, 154, 315, y2 - 2);
// Box around message area
setAPen(0);
drawHLine(_vm->_utils->vgaScaleX(2), _vm->_utils->vgaScaleY(152), _vm->_utils->vgaScaleX(317));
drawVLine(_vm->_utils->vgaScaleX(317), _vm->_utils->vgaScaleY(152), _vm->_utils->vgaScaleY(y2));
drawHLine(_vm->_utils->vgaScaleX(2), _vm->_utils->vgaScaleY(y2), _vm->_utils->vgaScaleX(317));
drawVLine(_vm->_utils->vgaScaleX(2), _vm->_utils->vgaScaleY(152), _vm->_utils->vgaScaleY(y2));
}
int32 DisplayMan::longDrawMessage(const char *str) {
char newText[512];
if (str == NULL)
return 0;
_vm->_event->attachGadgetList(NULL);
_vm->_event->mouseHide();
strcpy(newText, str);
if (!_longWinInFront) {
_longWinInFront = true;
// Clear Area
setAPen(3);
rectFill(0, _vm->_utils->vgaScaleY(149) + _vm->_utils->svgaCord(2), _vm->_utils->vgaScaleX(319), _vm->_utils->vgaScaleY(199));
}
createBox(198);
_vm->_event->mouseShow();
return flowTextScaled(_vm->_msgFont, 0, 1, 7, false, true, true, true, 6, 155, 313, 195, str);
}
/**
* Draws a message to the message box.
*/
void DisplayMan::drawMessage(const char *str) {
if (_doNotDrawMessage) {
_doNotDrawMessage = false;
return;
}
if (str) {
if ((textLength(_vm->_msgFont, str, strlen(str)) > _vm->_utils->vgaScaleX(306))) {
longDrawMessage(str);
_lastMessageLong = true;
} else {
if (_longWinInFront) {
_longWinInFront = false;
drawPanel();
}
_vm->_event->mouseHide();
createBox(168);
text(_vm->_msgFont, _vm->_utils->vgaScaleX(7), _vm->_utils->vgaScaleY(155) + _vm->_utils->svgaCord(2), 1, str, strlen(str));
_vm->_event->mouseShow();
_lastMessageLong = false;
}
}
}
/**
* Draws the control panel display.
*/
void DisplayMan::drawPanel() {
_vm->_event->mouseHide();
// Clear Area
setAPen(3);
rectFill(0, _vm->_utils->vgaScaleY(149) + _vm->_utils->svgaCord(2), _vm->_utils->vgaScaleX(319), _vm->_utils->vgaScaleY(199));
// First Line
setAPen(0);
drawHLine(0, _vm->_utils->vgaScaleY(149) + _vm->_utils->svgaCord(2), _vm->_utils->vgaScaleX(319));
// Second Line
setAPen(5);
drawHLine(0, _vm->_utils->vgaScaleY(149) + 1 + _vm->_utils->svgaCord(2), _vm->_utils->vgaScaleX(319));
// Gadget Separators
setAPen(0);
// First black line to separate buttons
drawHLine(0, _vm->_utils->vgaScaleY(170), _vm->_utils->vgaScaleX(319));
if (!_vm->_alternate) {
setAPen(4);
// The horizontal lines under the black one
drawHLine(0, _vm->_utils->vgaScaleY(170) + 1, _vm->_utils->vgaScaleX(319));
drawGadgetList(&_vm->_moveGadgetList);
} else {
if (_vm->getPlatform() != Common::kPlatformWindows) {
// Vertical Black lines
drawVLine(_vm->_utils->vgaScaleX(124), _vm->_utils->vgaScaleY(170) + 1, _vm->_utils->vgaScaleY(199));
drawVLine(_vm->_utils->vgaScaleX(194), _vm->_utils->vgaScaleY(170) + 1, _vm->_utils->vgaScaleY(199));
} else {
// Vertical Black lines
drawVLine(_vm->_utils->vgaScaleX(90), _vm->_utils->vgaScaleY(170) + 1, _vm->_utils->vgaScaleY(199));
drawVLine(_vm->_utils->vgaScaleX(160), _vm->_utils->vgaScaleY(170) + 1, _vm->_utils->vgaScaleY(199));
drawVLine(_vm->_utils->vgaScaleX(230), _vm->_utils->vgaScaleY(170) + 1, _vm->_utils->vgaScaleY(199));
}
setAPen(4);
// The horizontal lines under the black one
drawHLine(0, _vm->_utils->vgaScaleY(170) + 1, _vm->_utils->vgaScaleX(122));
drawHLine(_vm->_utils->vgaScaleX(126), _vm->_utils->vgaScaleY(170) + 1, _vm->_utils->vgaScaleX(192));
drawHLine(_vm->_utils->vgaScaleX(196), _vm->_utils->vgaScaleY(170) + 1, _vm->_utils->vgaScaleX(319));
// The vertical high light lines
drawVLine(_vm->_utils->vgaScaleX(1), _vm->_utils->vgaScaleY(170) + 2, _vm->_utils->vgaScaleY(198));
if (_vm->getPlatform() != Common::kPlatformWindows) {
drawVLine(_vm->_utils->vgaScaleX(126), _vm->_utils->vgaScaleY(170) + 2, _vm->_utils->vgaScaleY(198));
drawVLine(_vm->_utils->vgaScaleX(196), _vm->_utils->vgaScaleY(170) + 2, _vm->_utils->vgaScaleY(198));
} else {
drawVLine(_vm->_utils->vgaScaleX(92), _vm->_utils->vgaScaleY(170) + 2, _vm->_utils->vgaScaleY(198));
drawVLine(_vm->_utils->vgaScaleX(162), _vm->_utils->vgaScaleY(170) + 2, _vm->_utils->vgaScaleY(198));
drawVLine(_vm->_utils->vgaScaleX(232), _vm->_utils->vgaScaleY(170) + 2, _vm->_utils->vgaScaleY(198));
}
drawGadgetList(&_vm->_invGadgetList);
}
_vm->_event->mouseShow();
}
/**
* Sets up the Labyrinth screens, and opens up the initial windows.
*/
void DisplayMan::setUpScreens() {
createScreen(_vm->_isHiRes);
Common::File *controlFile = _vm->_resource->openDataFile("P:Control");
for (uint16 i = 0; i < 20; i++)
_vm->_moveImages[i] = new Image(controlFile);
delete controlFile;
// Creates the gadgets for the movement control panel
uint16 y = _vm->_utils->vgaScaleY(173) - _vm->_utils->svgaCord(2);
// The key mapping was only set for the Windows version.
// It's very convenient to have those shortcut, so I added them
// for all versions. (Strangerke)
_vm->_moveGadgetList.push_back(createButton( 1, y, 0, 't', _vm->_moveImages[0], _vm->_moveImages[1]));
_vm->_moveGadgetList.push_back(createButton( 33, y, 1, 'm', _vm->_moveImages[2], _vm->_moveImages[3]));
_vm->_moveGadgetList.push_back(createButton( 65, y, 2, 'o', _vm->_moveImages[4], _vm->_moveImages[5]));
_vm->_moveGadgetList.push_back(createButton( 97, y, 3, 'c', _vm->_moveImages[6], _vm->_moveImages[7]));
_vm->_moveGadgetList.push_back(createButton(129, y, 4, 'l', _vm->_moveImages[8], _vm->_moveImages[9]));
_vm->_moveGadgetList.push_back(createButton(161, y, 5, 'i', _vm->_moveImages[12], _vm->_moveImages[13]));
_vm->_moveGadgetList.push_back(createButton(193, y, 6, VKEY_LTARROW, _vm->_moveImages[14], _vm->_moveImages[15]));
_vm->_moveGadgetList.push_back(createButton(225, y, 7, VKEY_UPARROW, _vm->_moveImages[16], _vm->_moveImages[17]));
_vm->_moveGadgetList.push_back(createButton(257, y, 8, VKEY_RTARROW, _vm->_moveImages[18], _vm->_moveImages[19]));
_vm->_moveGadgetList.push_back(createButton(289, y, 9, 'p', _vm->_moveImages[10], _vm->_moveImages[11]));
Common::File *invFile = _vm->_resource->openDataFile("P:Inv");
if (_vm->getPlatform() == Common::kPlatformWindows) {
for (uint16 imgIdx = 0; imgIdx < 10; imgIdx++)
_vm->_invImages[imgIdx] = new Image(invFile);
} else {
for (uint16 imgIdx = 0; imgIdx < 6; imgIdx++)
_vm->_invImages[imgIdx] = new Image(invFile);
}
_vm->_invGadgetList.push_back(createButton( 24, y, 0, 'm', _vm->_invImages[0], _vm->_invImages[1]));
_vm->_invGadgetList.push_back(createButton( 56, y, 1, 'g', _vm->_invImages[2], _vm->_invImages[3]));
_vm->_invGadgetList.push_back(createButton( 94, y, 2, 'u', _vm->_invImages[4], _vm->_invImages[5]));
_vm->_invGadgetList.push_back(createButton(126, y, 3, 'l', _vm->_moveImages[8], _vm->_moveImages[9]));
_vm->_invGadgetList.push_back(createButton(164, y, 4, VKEY_LTARROW, _vm->_moveImages[14], _vm->_moveImages[15]));
_vm->_invGadgetList.push_back(createButton(196, y, 5, VKEY_RTARROW, _vm->_moveImages[18], _vm->_moveImages[19]));
// The windows version has 2 extra gadgets for breadcrumb trail
// TODO: the game is really hard to play without those, maybe we could add something to enable that.
if (_vm->getPlatform() == Common::kPlatformWindows) {
_vm->_invGadgetList.push_back(createButton(234, y, 6, 'b', _vm->_invImages[6], _vm->_invImages[7]));
_vm->_invGadgetList.push_back(createButton(266, y, 7, 'f', _vm->_invImages[8], _vm->_invImages[9]));
}
delete invFile;
}
/**
* Sets the pen number to use on all the drawing operations.
*/
void DisplayMan::setAPen(byte pennum) {
_curapen = pennum;
}
/**
* Fills in a rectangle.
*/
void DisplayMan::rectFill(uint16 x1, uint16 y1, uint16 x2, uint16 y2) {
int w = x2 - x1 + 1;
int h = y2 - y1 + 1;
if (x1 + w > _screenWidth)
w = _screenWidth - x1;
if (y1 + h > _screenHeight)
h = _screenHeight - y1;
if ((w > 0) && (h > 0)) {
char *d = (char *)getCurrentDrawingBuffer() + y1 * _screenWidth + x1;
while (h-- > 0) {
char *dd = d;
int ww = w;
while (ww-- > 0) {
*dd++ = _curapen;
}
d += _screenWidth;
}
}
}
void DisplayMan::rectFillScaled(uint16 x1, uint16 y1, uint16 x2, uint16 y2) {
rectFill(_vm->_utils->vgaScaleX(x1), _vm->_utils->vgaScaleY(y1), _vm->_utils->vgaScaleX(x2), _vm->_utils->vgaScaleY(y2));
}
/**
* Draws a horizontal line.
*/
void DisplayMan::drawVLine(uint16 x, uint16 y1, uint16 y2) {
rectFill(x, y1, x, y2);
}
/**
* Draws a vertical line.
*/
void DisplayMan::drawHLine(uint16 x1, uint16 y, uint16 x2) {
rectFill(x1, y, x2, y);
}
void DisplayMan::screenUpdate() {
g_system->copyRectToScreen(_displayBuffer, _screenWidth, 0, 0, _screenWidth, _screenHeight);
g_system->updateScreen();
_vm->_event->processInput();
}
/**
* Sets up either a low-res or a high-res 256 color screen.
*/
void DisplayMan::createScreen(bool hiRes) {
if (hiRes) {
_screenWidth = 640;
_screenHeight = 480;
} else {
_screenWidth = 320;
_screenHeight = 200;
}
_screenBytesPerPage = _screenWidth * _screenHeight;
_displayBuffer = new byte[_screenBytesPerPage]; // FIXME: Memory leak!
}
/**
* Converts an Amiga palette (up to 16 colors) to a VGA palette, then sets
* the VGA palette.
*/
void DisplayMan::setAmigaPal(uint16 *pal, uint16 numColors) {
byte vgaPal[16 * 3];
uint16 vgaIdx = 0;
if (numColors > 16)
numColors = 16;
for (uint16 i = 0; i < numColors; i++) {
vgaPal[vgaIdx++] = (byte)(((pal[i] & 0xf00) >> 8) << 2);
vgaPal[vgaIdx++] = (byte)(((pal[i] & 0x0f0) >> 4) << 2);
vgaPal[vgaIdx++] = (byte)(((pal[i] & 0x00f)) << 2);
}
writeColorRegs(vgaPal, 0, 16);
_vm->waitTOF();
}
/**
* Writes any number of the 256 color registers.
* first: the number of the first color register to write.
* numreg: the number of registers to write
* buf: a char pointer which contains the selected color registers.
* Each value representing a color register occupies 3 bytes in
* the array. The order is red, green then blue. The first byte
* in the array is the red component of the first element selected.
* The length of the buffer is 3 times the number of registers
* selected.
*/
void DisplayMan::writeColorRegs(byte *buf, uint16 first, uint16 numreg) {
byte tmp[256 * 3];
for (int i = 0; i < 256 * 3; i++) {
tmp[i] = buf[i] * 4;
}
g_system->getPaletteManager()->setPalette(tmp, first, numreg);
memcpy(&(_curvgapal[first * 3]), buf, numreg * 3);
}
void DisplayMan::setPalette(void *cmap, uint16 numcolors) {
if (memcmp(cmap, _curvgapal, numcolors * 3) != 0)
writeColorRegs((byte *)cmap, 0, numcolors);
}
/**
* Returns the base address of the current VGA display.
*/
byte *DisplayMan::getCurrentDrawingBuffer() {
if (_currentDisplayBuffer)
return _currentDisplayBuffer;
return _displayBuffer;
}
/**
* Overlays a region on the screen using the desired pen color.
*/
void DisplayMan::overlayRect(uint16 pencolor, uint16 x1, uint16 y1, uint16 x2, uint16 y2) {
int w = x2 - x1 + 1;
int h = y2 - y1 + 1;
if (x1 + w > _screenWidth)
w = _screenWidth - x1;
if (y1 + h > _screenHeight)
h = _screenHeight - y1;
if ((w > 0) && (h > 0)) {
char *d = (char *)getCurrentDrawingBuffer() + y1 * _screenWidth + x1;
while (h-- > 0) {
char *dd = d;
int ww = w;
if (y1 & 1) {
dd++;
ww--;
}
while (ww > 0) {
*dd = pencolor;
dd += 2;
ww -= 2;
}
d += _screenWidth;
y1++;
}
}
}
/**
* Closes a font and frees all memory associated with it.
*/
void DisplayMan::closeFont(TextFont *tf) {
if (tf) {
if (tf->_data && tf->_dataLength)
delete[] tf->_data;
delete tf;
}
}
/**
* Returns the length of a text in the specified font.
*/
uint16 DisplayMan::textLength(TextFont *tf, const char *text, uint16 numchars) {
uint16 length = 0;
if (tf) {
for (uint16 i = 0; i < numchars; i++) {
length += tf->_widths[(uint)*text];
text++;
}
}
return length;
}
/**
* Returns the height of a specified font.
*/
uint16 DisplayMan::textHeight(TextFont *tf) {
return (tf) ? tf->_height : 0;
}
/**
* Draws the text to the screen.
*/
void DisplayMan::text(TextFont *tf, uint16 x, uint16 y, uint16 color, const char *text, uint16 numchars) {
byte *VGATop, *VGACur, *VGATemp, *VGATempLine, *cdata;
uint32 RealOffset, SegmentOffset;
int32 templeft, LeftInSegment;
uint16 bwidth, mask, curpage, data;
VGATop = getCurrentDrawingBuffer();
for (uint16 i = 0; i < numchars; i++) {
RealOffset = (_screenWidth * y) + x;
curpage = RealOffset / _screenBytesPerPage;
SegmentOffset = RealOffset - (curpage * _screenBytesPerPage);
LeftInSegment = _screenBytesPerPage - SegmentOffset;
VGACur = VGATop + SegmentOffset;
if (tf->_widths[(uint)*text]) {
cdata = tf->_data + tf->_offsets[(uint)*text];
bwidth = *cdata++;
VGATemp = VGACur;
VGATempLine = VGACur;
for (uint16 rows = 0; rows < tf->_height; rows++) {
VGATemp = VGATempLine;
templeft = LeftInSegment;
for (uint16 cols = 0; cols < bwidth; cols++) {
data = *cdata++;
if (data && (templeft >= 8)) {
for (int j = 7; j >= 0; j--) {
if ((1 << j) & data)
*VGATemp = color;
VGATemp++;
}
templeft -= 8;
} else if (data) {
mask = 0x80;
templeft = LeftInSegment;
for (uint16 counterb = 0; counterb < 8; counterb++) {
if (templeft <= 0) {
curpage++;
VGATemp = (byte *)(VGATop - templeft);
// Set up VGATempLine for next line
VGATempLine -= _screenBytesPerPage;
// Set up LeftInSegment for next line
LeftInSegment += _screenBytesPerPage + templeft;
templeft += _screenBytesPerPage;
}
if (mask & data)
*VGATemp = color;
VGATemp++;
mask = mask >> 1;
templeft--;
}
} else {
templeft -= 8;
VGATemp += 8;
}
}
VGATempLine += _screenWidth;
LeftInSegment -= _screenWidth;
if (LeftInSegment <= 0) {
curpage++;
VGATempLine -= _screenBytesPerPage;
LeftInSegment += _screenBytesPerPage;
}
}
}
x += tf->_widths[(int)*text];
text++;
}
}
} // End of namespace Lab
|