summaryrefslogtreecommitdiff
path: root/src/hu_lib.c
blob: 32c13b984133b047555c73fcd7ab0ad3a7fb91cd (plain)
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
// Emacs style mode select   -*- C++ -*- 
//-----------------------------------------------------------------------------
//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 2005 Simon Howard
//
// 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., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
//
// DESCRIPTION:  heads-up text and input code
//
//-----------------------------------------------------------------------------


#include <ctype.h>

#include "doomdef.h"

#include "v_video.h"
#include "i_swap.h"

#include "hu_lib.h"
#include "r_local.h"
#include "r_draw.h"

// boolean : whether the screen is always erased
#define noterased viewwindowx

extern boolean	automapactive;	// in AM_map.c

void HUlib_init(void)
{
}

void HUlib_clearTextLine(hu_textline_t* t)
{
    t->len = 0;
    t->l[0] = 0;
    t->needsupdate = true;
}

void
HUlib_initTextLine
( hu_textline_t*	t,
  int			x,
  int			y,
  patch_t**		f,
  int			sc )
{
    t->x = x;
    t->y = y;
    t->f = f;
    t->sc = sc;
    HUlib_clearTextLine(t);
}

boolean
HUlib_addCharToTextLine
( hu_textline_t*	t,
  char			ch )
{

    if (t->len == HU_MAXLINELENGTH)
	return false;
    else
    {
	t->l[t->len++] = ch;
	t->l[t->len] = 0;
	t->needsupdate = 4;
	return true;
    }

}

boolean HUlib_delCharFromTextLine(hu_textline_t* t)
{

    if (!t->len) return false;
    else
    {
	t->l[--t->len] = 0;
	t->needsupdate = 4;
	return true;
    }

}

void
HUlib_drawTextLine
( hu_textline_t*	l,
  boolean		drawcursor )
{

    int			i;
    int			w;
    int			x;
    unsigned char	c;

    // draw the new stuff
    x = l->x;
    for (i=0;i<l->len;i++)
    {
	c = toupper(l->l[i]);
	if (c != ' '
	    && c >= l->sc
	    && c <= '_')
	{
	    w = SHORT(l->f[c - l->sc]->width);
	    if (x+w > SCREENWIDTH)
		break;
	    V_DrawPatchDirect(x, l->y, FG, l->f[c - l->sc]);
	    x += w;
	}
	else
	{
	    x += 4;
	    if (x >= SCREENWIDTH)
		break;
	}
    }

    // draw the cursor if requested
    if (drawcursor
	&& x + SHORT(l->f['_' - l->sc]->width) <= SCREENWIDTH)
    {
	V_DrawPatchDirect(x, l->y, FG, l->f['_' - l->sc]);
    }
}


// sorta called by HU_Erase and just better darn get things straight
void HUlib_eraseTextLine(hu_textline_t* l)
{
    int			lh;
    int			y;
    int			yoffset;

    // Only erases when NOT in automap and the screen is reduced,
    // and the text must either need updating or refreshing
    // (because of a recent change back from the automap)

    if (!automapactive &&
	viewwindowx && l->needsupdate)
    {
	lh = SHORT(l->f[0]->height) + 1;
	for (y=l->y,yoffset=y*SCREENWIDTH ; y<l->y+lh ; y++,yoffset+=SCREENWIDTH)
	{
	    if (y < viewwindowy || y >= viewwindowy + viewheight)
		R_VideoErase(yoffset, SCREENWIDTH); // erase entire line
	    else
	    {
		R_VideoErase(yoffset, viewwindowx); // erase left border
		R_VideoErase(yoffset + viewwindowx + viewwidth, viewwindowx);
		// erase right border
	    }
	}
    }

    if (l->needsupdate) l->needsupdate--;

}

void
HUlib_initSText
( hu_stext_t*	s,
  int		x,
  int		y,
  int		h,
  patch_t**	font,
  int		startchar,
  boolean*	on )
{

    int i;

    s->h = h;
    s->on = on;
    s->laston = true;
    s->cl = 0;
    for (i=0;i<h;i++)
	HUlib_initTextLine(&s->l[i],
			   x, y - i*(SHORT(font[0]->height)+1),
			   font, startchar);

}

void HUlib_addLineToSText(hu_stext_t* s)
{

    int i;

    // add a clear line
    if (++s->cl == s->h)
	s->cl = 0;
    HUlib_clearTextLine(&s->l[s->cl]);

    // everything needs updating
    for (i=0 ; i<s->h ; i++)
	s->l[i].needsupdate = 4;

}

void
HUlib_addMessageToSText
( hu_stext_t*	s,
  char*		prefix,
  char*		msg )
{
    HUlib_addLineToSText(s);
    if (prefix)
	while (*prefix)
	    HUlib_addCharToTextLine(&s->l[s->cl], *(prefix++));

    while (*msg)
	HUlib_addCharToTextLine(&s->l[s->cl], *(msg++));
}

void HUlib_drawSText(hu_stext_t* s)
{
    int i, idx;
    hu_textline_t *l;

    if (!*s->on)
	return; // if not on, don't draw

    // draw everything
    for (i=0 ; i<s->h ; i++)
    {
	idx = s->cl - i;
	if (idx < 0)
	    idx += s->h; // handle queue of lines
	
	l = &s->l[idx];

	// need a decision made here on whether to skip the draw
	HUlib_drawTextLine(l, false); // no cursor, please
    }

}

void HUlib_eraseSText(hu_stext_t* s)
{

    int i;

    for (i=0 ; i<s->h ; i++)
    {
	if (s->laston && !*s->on)
	    s->l[i].needsupdate = 4;
	HUlib_eraseTextLine(&s->l[i]);
    }
    s->laston = *s->on;

}

void
HUlib_initIText
( hu_itext_t*	it,
  int		x,
  int		y,
  patch_t**	font,
  int		startchar,
  boolean*	on )
{
    it->lm = 0; // default left margin is start of text
    it->on = on;
    it->laston = true;
    HUlib_initTextLine(&it->l, x, y, font, startchar);
}


// The following deletion routines adhere to the left margin restriction
void HUlib_delCharFromIText(hu_itext_t* it)
{
    if (it->l.len != it->lm)
	HUlib_delCharFromTextLine(&it->l);
}

void HUlib_eraseLineFromIText(hu_itext_t* it)
{
    while (it->lm != it->l.len)
	HUlib_delCharFromTextLine(&it->l);
}

// Resets left margin as well
void HUlib_resetIText(hu_itext_t* it)
{
    it->lm = 0;
    HUlib_clearTextLine(&it->l);
}

void
HUlib_addPrefixToIText
( hu_itext_t*	it,
  char*		str )
{
    while (*str)
	HUlib_addCharToTextLine(&it->l, *(str++));
    it->lm = it->l.len;
}

// wrapper function for handling general keyed input.
// returns true if it ate the key
boolean
HUlib_keyInIText
( hu_itext_t*	it,
  unsigned char ch )
{
    ch = toupper(ch);

    if (ch >= ' ' && ch <= '_') 
  	HUlib_addCharToTextLine(&it->l, (char) ch);
    else 
	if (ch == KEY_BACKSPACE) 
	    HUlib_delCharFromIText(it);
	else 
	    if (ch != KEY_ENTER) 
		return false; // did not eat key

    return true; // ate the key

}

void HUlib_drawIText(hu_itext_t* it)
{

    hu_textline_t *l = &it->l;

    if (!*it->on)
	return;
    HUlib_drawTextLine(l, true); // draw the line w/ cursor

}

void HUlib_eraseIText(hu_itext_t* it)
{
    if (it->laston && !*it->on)
	it->l.needsupdate = 4;
    HUlib_eraseTextLine(&it->l);
    it->laston = *it->on;
}