forked from KolibriOS/kolibrios
356 lines
6.3 KiB
C
356 lines
6.3 KiB
C
// Emacs style mode select -*- C++ -*-
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//-----------------------------------------------------------------------------
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//
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// $Id:$
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//
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// Copyright (C) 1993-1996 by id Software, Inc.
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//
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// This source is available for distribution and/or modification
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// only under the terms of the DOOM Source Code License as
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// published by id Software. All rights reserved.
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//
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// The source is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
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// for more details.
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//
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// $Log:$
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//
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// DESCRIPTION: heads-up text and input code
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//
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//-----------------------------------------------------------------------------
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static const char
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rcsid[] = "$Id: hu_lib.c,v 1.3 1997/01/26 07:44:58 b1 Exp $";
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#include <ctype.h>
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#include "m_swap.h"
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#include "doomdef.h"
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#include "v_video.h"
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#include "hu_lib.h"
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#include "r_local.h"
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#include "r_draw.h"
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// boolean : whether the screen is always erased
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#define noterased viewwindowx
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extern boolean automapactive; // in AM_map.c
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void HUlib_init(void)
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{
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}
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void HUlib_clearTextLine(hu_textline_t* t)
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{
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t->len = 0;
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t->l[0] = 0;
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t->needsupdate = true;
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}
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void
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HUlib_initTextLine
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( hu_textline_t* t,
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int x,
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int y,
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patch_t** f,
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int sc )
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{
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t->x = x;
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t->y = y;
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t->f = f;
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t->sc = sc;
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HUlib_clearTextLine(t);
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}
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boolean
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HUlib_addCharToTextLine
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( hu_textline_t* t,
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char ch )
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{
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if (t->len == HU_MAXLINELENGTH)
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return false;
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else
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{
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t->l[t->len++] = ch;
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t->l[t->len] = 0;
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t->needsupdate = 4;
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return true;
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}
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}
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boolean HUlib_delCharFromTextLine(hu_textline_t* t)
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{
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if (!t->len) return false;
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else
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{
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t->l[--t->len] = 0;
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t->needsupdate = 4;
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return true;
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}
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}
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void
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HUlib_drawTextLine
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( hu_textline_t* l,
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boolean drawcursor )
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{
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int i;
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int w;
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int x;
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unsigned char c;
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// draw the new stuff
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x = l->x;
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for (i=0;i<l->len;i++)
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{
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c = toupper(l->l[i]);
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if (c != ' '
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&& c >= l->sc
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&& c <= '_')
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{
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w = SHORT(l->f[c - l->sc]->width);
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if (x+w > SCREENWIDTH)
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break;
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V_DrawPatchDirect(x, l->y, FG, l->f[c - l->sc]);
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x += w;
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}
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else
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{
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x += 4;
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if (x >= SCREENWIDTH)
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break;
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}
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}
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// draw the cursor if requested
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if (drawcursor
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&& x + SHORT(l->f['_' - l->sc]->width) <= SCREENWIDTH)
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{
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V_DrawPatchDirect(x, l->y, FG, l->f['_' - l->sc]);
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}
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}
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// sorta called by HU_Erase and just better darn get things straight
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void HUlib_eraseTextLine(hu_textline_t* l)
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{
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int lh;
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int y;
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int yoffset;
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static boolean lastautomapactive = true;
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// Only erases when NOT in automap and the screen is reduced,
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// and the text must either need updating or refreshing
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// (because of a recent change back from the automap)
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if (!automapactive &&
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viewwindowx && l->needsupdate)
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{
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lh = SHORT(l->f[0]->height) + 1;
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for (y=l->y,yoffset=y*SCREENWIDTH ; y<l->y+lh ; y++,yoffset+=SCREENWIDTH)
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{
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if (y < viewwindowy || y >= viewwindowy + viewheight)
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R_VideoErase(yoffset, SCREENWIDTH); // erase entire line
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else
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{
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R_VideoErase(yoffset, viewwindowx); // erase left border
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R_VideoErase(yoffset + viewwindowx + viewwidth, viewwindowx);
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// erase right border
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}
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}
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}
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lastautomapactive = automapactive;
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if (l->needsupdate) l->needsupdate--;
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}
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void
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HUlib_initSText
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( hu_stext_t* s,
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int x,
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int y,
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int h,
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patch_t** font,
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int startchar,
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boolean* on )
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{
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int i;
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s->h = h;
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s->on = on;
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s->laston = true;
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s->cl = 0;
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for (i=0;i<h;i++)
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HUlib_initTextLine(&s->l[i],
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x, y - i*(SHORT(font[0]->height)+1),
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font, startchar);
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}
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void HUlib_addLineToSText(hu_stext_t* s)
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{
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int i;
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// add a clear line
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if (++s->cl == s->h)
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s->cl = 0;
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HUlib_clearTextLine(&s->l[s->cl]);
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// everything needs updating
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for (i=0 ; i<s->h ; i++)
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s->l[i].needsupdate = 4;
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}
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void
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HUlib_addMessageToSText
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( hu_stext_t* s,
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char* prefix,
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char* msg )
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{
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HUlib_addLineToSText(s);
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if (prefix)
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while (*prefix)
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HUlib_addCharToTextLine(&s->l[s->cl], *(prefix++));
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while (*msg)
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HUlib_addCharToTextLine(&s->l[s->cl], *(msg++));
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}
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void HUlib_drawSText(hu_stext_t* s)
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{
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int i, idx;
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hu_textline_t *l;
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if (!*s->on)
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return; // if not on, don't draw
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// draw everything
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for (i=0 ; i<s->h ; i++)
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{
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idx = s->cl - i;
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if (idx < 0)
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idx += s->h; // handle queue of lines
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l = &s->l[idx];
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// need a decision made here on whether to skip the draw
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HUlib_drawTextLine(l, false); // no cursor, please
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}
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}
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void HUlib_eraseSText(hu_stext_t* s)
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{
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int i;
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for (i=0 ; i<s->h ; i++)
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{
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if (s->laston && !*s->on)
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s->l[i].needsupdate = 4;
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HUlib_eraseTextLine(&s->l[i]);
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}
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s->laston = *s->on;
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}
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void
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HUlib_initIText
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( hu_itext_t* it,
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int x,
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int y,
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patch_t** font,
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int startchar,
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boolean* on )
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{
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it->lm = 0; // default left margin is start of text
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it->on = on;
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it->laston = true;
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HUlib_initTextLine(&it->l, x, y, font, startchar);
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}
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// The following deletion routines adhere to the left margin restriction
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void HUlib_delCharFromIText(hu_itext_t* it)
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{
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if (it->l.len != it->lm)
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HUlib_delCharFromTextLine(&it->l);
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}
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void HUlib_eraseLineFromIText(hu_itext_t* it)
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{
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while (it->lm != it->l.len)
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HUlib_delCharFromTextLine(&it->l);
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}
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// Resets left margin as well
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void HUlib_resetIText(hu_itext_t* it)
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{
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it->lm = 0;
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HUlib_clearTextLine(&it->l);
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}
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void
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HUlib_addPrefixToIText
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( hu_itext_t* it,
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char* str )
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{
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while (*str)
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HUlib_addCharToTextLine(&it->l, *(str++));
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it->lm = it->l.len;
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}
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// wrapper function for handling general keyed input.
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// returns true if it ate the key
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boolean
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HUlib_keyInIText
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( hu_itext_t* it,
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unsigned char ch )
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{
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if (ch >= ' ' && ch <= '_')
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HUlib_addCharToTextLine(&it->l, (char) ch);
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else
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if (ch == KEY_BACKSPACE)
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HUlib_delCharFromIText(it);
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else
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if (ch != KEY_ENTER)
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return false; // did not eat key
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return true; // ate the key
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}
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void HUlib_drawIText(hu_itext_t* it)
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{
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hu_textline_t *l = &it->l;
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if (!*it->on)
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return;
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HUlib_drawTextLine(l, true); // draw the line w/ cursor
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}
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void HUlib_eraseIText(hu_itext_t* it)
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{
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if (it->laston && !*it->on)
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it->l.needsupdate = 4;
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HUlib_eraseTextLine(&it->l);
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it->laston = *it->on;
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}
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