530 lines
13 KiB
C
530 lines
13 KiB
C
/* PDCurses */
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#include "pdcsdl.h"
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#include <stdlib.h>
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#include <string.h>
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#ifdef PDC_WIDE
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# include "../common/acsgr.h"
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#else
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# include "../common/acs437.h"
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#endif
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#define MAXRECT 200 /* maximum number of rects to queue up before
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an update is forced; the number was chosen
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arbitrarily */
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static SDL_Rect uprect[MAXRECT]; /* table of rects to update */
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static chtype oldch = (chtype)(-1); /* current attribute */
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static int rectcount = 0; /* index into uprect */
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static short foregr = -2, backgr = -2; /* current foreground, background */
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static bool blinked_off = FALSE;
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/* do the real updates on a delay */
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void PDC_update_rects(void)
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{
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if (rectcount)
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{
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/* if the maximum number of rects has been reached, we're
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probably better off doing a full screen update */
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if (rectcount == MAXRECT)
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SDL_Flip(pdc_screen);
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else
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SDL_UpdateRects(pdc_screen, rectcount, uprect);
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rectcount = 0;
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}
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}
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/* set the font colors to match the chtype's attribute */
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static void _set_attr(chtype ch)
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{
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attr_t sysattrs = SP->termattrs;
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#ifdef PDC_WIDE
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TTF_SetFontStyle(pdc_ttffont,
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( ((ch & A_BOLD) && (sysattrs & A_BOLD)) ?
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TTF_STYLE_BOLD : 0) |
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( ((ch & A_ITALIC) && (sysattrs & A_ITALIC)) ?
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TTF_STYLE_ITALIC : 0) );
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#endif
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ch &= (A_COLOR|A_BOLD|A_BLINK|A_REVERSE);
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if (oldch != ch)
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{
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short newfg, newbg;
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if (SP->mono)
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return;
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pair_content(PAIR_NUMBER(ch), &newfg, &newbg);
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if ((ch & A_BOLD) && !(sysattrs & A_BOLD))
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newfg |= 8;
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if ((ch & A_BLINK) && !(sysattrs & A_BLINK))
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newbg |= 8;
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if (ch & A_REVERSE)
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{
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short tmp = newfg;
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newfg = newbg;
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newbg = tmp;
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}
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if (newfg != foregr)
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{
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#ifndef PDC_WIDE
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SDL_SetPalette(pdc_font, SDL_LOGPAL,
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pdc_color + newfg, pdc_flastc, 1);
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#endif
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foregr = newfg;
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}
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if (newbg != backgr)
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{
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#ifndef PDC_WIDE
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if (newbg == -1)
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SDL_SetColorKey(pdc_font, SDL_SRCCOLORKEY, 0);
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else
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{
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if (backgr == -1)
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SDL_SetColorKey(pdc_font, 0, 0);
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SDL_SetPalette(pdc_font, SDL_LOGPAL,
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pdc_color + newbg, 0, 1);
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}
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#endif
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backgr = newbg;
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}
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oldch = ch;
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}
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}
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#ifdef PDC_WIDE
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/* Draw some of the ACS_* "graphics" */
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bool _grprint(chtype ch, SDL_Rect dest)
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{
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Uint32 col = pdc_mapped[foregr];
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int hmid = (pdc_fheight - pdc_fthick) >> 1;
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int wmid = (pdc_fwidth - pdc_fthick) >> 1;
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switch (ch)
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{
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case ACS_ULCORNER:
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dest.h = pdc_fheight - hmid;
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dest.y += hmid;
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dest.w = pdc_fthick;
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dest.x += wmid;
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SDL_FillRect(pdc_screen, &dest, col);
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dest.w = pdc_fwidth - wmid;
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goto S1;
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case ACS_LLCORNER:
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dest.h = hmid;
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dest.w = pdc_fthick;
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dest.x += wmid;
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SDL_FillRect(pdc_screen, &dest, col);
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dest.w = pdc_fwidth - wmid;
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dest.y += hmid;
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goto S1;
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case ACS_URCORNER:
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dest.h = pdc_fheight - hmid;
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dest.w = pdc_fthick;
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dest.y += hmid;
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dest.x += wmid;
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SDL_FillRect(pdc_screen, &dest, col);
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dest.w = wmid;
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dest.x -= wmid;
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goto S1;
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case ACS_LRCORNER:
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dest.h = hmid + pdc_fthick;
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dest.w = pdc_fthick;
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dest.x += wmid;
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SDL_FillRect(pdc_screen, &dest, col);
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dest.w = wmid;
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dest.x -= wmid;
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dest.y += hmid;
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goto S1;
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case ACS_LTEE:
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dest.h = pdc_fthick;
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dest.w = pdc_fwidth - wmid;
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dest.x += wmid;
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dest.y += hmid;
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SDL_FillRect(pdc_screen, &dest, col);
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dest.w = pdc_fthick;
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dest.x -= wmid;
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goto VLINE;
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case ACS_RTEE:
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dest.w = wmid;
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case ACS_PLUS:
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dest.h = pdc_fthick;
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dest.y += hmid;
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SDL_FillRect(pdc_screen, &dest, col);
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VLINE:
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dest.h = pdc_fheight;
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dest.y -= hmid;
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case ACS_VLINE:
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dest.w = pdc_fthick;
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dest.x += wmid;
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goto DRAW;
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case ACS_TTEE:
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dest.h = pdc_fheight - hmid;
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dest.w = pdc_fthick;
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dest.x += wmid;
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dest.y += hmid;
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SDL_FillRect(pdc_screen, &dest, col);
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dest.w = pdc_fwidth;
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dest.x -= wmid;
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goto S1;
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case ACS_BTEE:
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dest.h = hmid;
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dest.w = pdc_fthick;
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dest.x += wmid;
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SDL_FillRect(pdc_screen, &dest, col);
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dest.w = pdc_fwidth;
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dest.x -= wmid;
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case ACS_HLINE:
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dest.y += hmid;
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goto S1;
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case ACS_S3:
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dest.y += hmid >> 1;
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goto S1;
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case ACS_S7:
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dest.y += hmid + (hmid >> 1);
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goto S1;
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case ACS_S9:
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dest.y += pdc_fheight - pdc_fthick;
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case ACS_S1:
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S1:
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dest.h = pdc_fthick;
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case ACS_BLOCK:
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DRAW:
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SDL_FillRect(pdc_screen, &dest, col);
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return TRUE;
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default: ;
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}
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return FALSE; /* didn't draw it -- fall back to acs_map */
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}
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#endif
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/* draw a cursor at (y, x) */
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void PDC_gotoyx(int row, int col)
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{
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SDL_Rect src, dest;
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chtype ch;
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int oldrow, oldcol;
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#ifdef PDC_WIDE
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Uint16 chstr[2] = {0, 0};
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#endif
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PDC_LOG(("PDC_gotoyx() - called: row %d col %d from row %d col %d\n",
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row, col, SP->cursrow, SP->curscol));
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oldrow = SP->cursrow;
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oldcol = SP->curscol;
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/* clear the old cursor */
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PDC_transform_line(oldrow, oldcol, 1, curscr->_y[oldrow] + oldcol);
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if (!SP->visibility)
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return;
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/* draw a new cursor by overprinting the existing character in
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reverse, either the full cell (when visibility == 2) or the
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lowest quarter of it (when visibility == 1) */
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ch = curscr->_y[row][col] ^ A_REVERSE;
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_set_attr(ch);
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src.h = (SP->visibility == 1) ? pdc_fheight >> 2 : pdc_fheight;
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src.w = pdc_fwidth;
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dest.y = (row + 1) * pdc_fheight - src.h + pdc_yoffset;
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dest.x = col * pdc_fwidth + pdc_xoffset;
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dest.h = src.h;
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dest.w = src.w;
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#ifdef PDC_WIDE
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SDL_FillRect(pdc_screen, &dest, pdc_mapped[backgr]);
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if (!(SP->visibility == 2 && (ch & A_ALTCHARSET && !(ch & 0xff80)) &&
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_grprint(ch & (0x7f | A_ALTCHARSET), dest)))
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{
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if (ch & A_ALTCHARSET && !(ch & 0xff80))
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ch = acs_map[ch & 0x7f];
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chstr[0] = ch & A_CHARTEXT;
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pdc_font = TTF_RenderUNICODE_Blended(pdc_ttffont, chstr,
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pdc_color[foregr]);
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if (pdc_font)
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{
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int center = pdc_fwidth > pdc_font->w ?
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(pdc_fwidth - pdc_font->w) >> 1 : 0;
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src.x = 0;
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src.y = pdc_fheight - src.h;
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dest.x += center;
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SDL_BlitSurface(pdc_font, &src, pdc_screen, &dest);
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dest.x -= center;
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SDL_FreeSurface(pdc_font);
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pdc_font = NULL;
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}
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}
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#else
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if (ch & A_ALTCHARSET && !(ch & 0xff80))
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ch = acs_map[ch & 0x7f];
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src.x = (ch & 0xff) % 32 * pdc_fwidth;
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src.y = (ch & 0xff) / 32 * pdc_fheight + (pdc_fheight - src.h);
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SDL_BlitSurface(pdc_font, &src, pdc_screen, &dest);
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#endif
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if (oldrow != row || oldcol != col)
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{
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if (rectcount == MAXRECT)
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PDC_update_rects();
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uprect[rectcount++] = dest;
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}
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}
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void _new_packet(attr_t attr, int lineno, int x, int len, const chtype *srcp)
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{
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SDL_Rect src, dest, lastrect;
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int j;
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#ifdef PDC_WIDE
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Uint16 chstr[2] = {0, 0};
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#endif
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attr_t sysattrs = SP->termattrs;
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short hcol = SP->line_color;
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bool blink = blinked_off && (attr & A_BLINK) && (sysattrs & A_BLINK);
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if (rectcount == MAXRECT)
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PDC_update_rects();
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#ifdef PDC_WIDE
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src.x = 0;
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src.y = 0;
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#endif
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src.h = pdc_fheight;
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src.w = pdc_fwidth;
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dest.y = pdc_fheight * lineno + pdc_yoffset;
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dest.x = pdc_fwidth * x + pdc_xoffset;
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dest.h = pdc_fheight;
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dest.w = pdc_fwidth * len;
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/* if the previous rect was just above this one, with the same width
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and horizontal position, then merge the new one with it instead
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of adding a new entry */
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if (rectcount)
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lastrect = uprect[rectcount - 1];
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if (rectcount && lastrect.x == dest.x && lastrect.w == dest.w)
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{
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if (lastrect.y + lastrect.h == dest.y)
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uprect[rectcount - 1].h = lastrect.h + pdc_fheight;
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else
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if (lastrect.y != dest.y)
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uprect[rectcount++] = dest;
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}
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else
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uprect[rectcount++] = dest;
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_set_attr(attr);
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if (backgr == -1)
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SDL_LowerBlit(pdc_tileback, &dest, pdc_screen, &dest);
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#ifdef PDC_WIDE
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else
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SDL_FillRect(pdc_screen, &dest, pdc_mapped[backgr]);
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#endif
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if (hcol == -1)
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hcol = foregr;
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for (j = 0; j < len; j++)
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{
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chtype ch = srcp[j];
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if (blink)
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ch = ' ';
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dest.w = pdc_fwidth;
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if (ch & A_ALTCHARSET && !(ch & 0xff80))
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{
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#ifdef PDC_WIDE
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if (_grprint(ch & (0x7f | A_ALTCHARSET), dest))
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{
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dest.x += pdc_fwidth;
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continue;
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}
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#endif
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ch = acs_map[ch & 0x7f];
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}
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#ifdef PDC_WIDE
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ch &= A_CHARTEXT;
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if (ch != ' ')
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{
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if (chstr[0] != ch)
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{
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chstr[0] = ch;
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if (pdc_font)
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SDL_FreeSurface(pdc_font);
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pdc_font = TTF_RenderUNICODE_Blended(pdc_ttffont, chstr,
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pdc_color[foregr]);
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}
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if (pdc_font)
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{
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int center = pdc_fwidth > pdc_font->w ?
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(pdc_fwidth - pdc_font->w) >> 1 : 0;
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dest.x += center;
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SDL_BlitSurface(pdc_font, &src, pdc_screen, &dest);
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dest.x -= center;
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}
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}
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#else
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src.x = (ch & 0xff) % 32 * pdc_fwidth;
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src.y = (ch & 0xff) / 32 * pdc_fheight;
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SDL_LowerBlit(pdc_font, &src, pdc_screen, &dest);
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#endif
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if (!blink && (attr & (A_LEFT | A_RIGHT)))
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{
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dest.w = pdc_fthick;
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if (attr & A_LEFT)
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SDL_FillRect(pdc_screen, &dest, pdc_mapped[hcol]);
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if (attr & A_RIGHT)
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{
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dest.x += pdc_fwidth - pdc_fthick;
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SDL_FillRect(pdc_screen, &dest, pdc_mapped[hcol]);
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dest.x -= pdc_fwidth - pdc_fthick;
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}
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}
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dest.x += pdc_fwidth;
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}
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#ifdef PDC_WIDE
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if (pdc_font)
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{
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SDL_FreeSurface(pdc_font);
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pdc_font = NULL;
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}
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#endif
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if (!blink && (attr & A_UNDERLINE))
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{
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dest.y += pdc_fheight - pdc_fthick;
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dest.x = pdc_fwidth * x + pdc_xoffset;
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dest.h = pdc_fthick;
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dest.w = pdc_fwidth * len;
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SDL_FillRect(pdc_screen, &dest, pdc_mapped[hcol]);
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}
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}
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/* update the given physical line to look like the corresponding line in
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curscr */
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void PDC_transform_line(int lineno, int x, int len, const chtype *srcp)
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{
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attr_t old_attr, attr;
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int i, j;
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PDC_LOG(("PDC_transform_line() - called: lineno=%d\n", lineno));
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old_attr = *srcp & (A_ATTRIBUTES ^ A_ALTCHARSET);
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for (i = 1, j = 1; j < len; i++, j++)
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{
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attr = srcp[i] & (A_ATTRIBUTES ^ A_ALTCHARSET);
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if (attr != old_attr)
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{
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_new_packet(old_attr, lineno, x, i, srcp);
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old_attr = attr;
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srcp += i;
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x += i;
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i = 0;
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}
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}
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_new_packet(old_attr, lineno, x, i, srcp);
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}
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static Uint32 _blink_timer(Uint32 interval, void *param)
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{
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SDL_Event event;
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event.type = SDL_USEREVENT;
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SDL_PushEvent(&event);
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return(interval);
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}
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void PDC_blink_text(void)
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{
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static SDL_TimerID blinker_id = 0;
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int i, j, k;
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oldch = (chtype)(-1);
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if (!(SP->termattrs & A_BLINK))
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{
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SDL_RemoveTimer(blinker_id);
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blinker_id = 0;
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}
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else if (!blinker_id)
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{
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blinker_id = SDL_AddTimer(500, _blink_timer, NULL);
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blinked_off = TRUE;
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}
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blinked_off = !blinked_off;
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for (i = 0; i < SP->lines; i++)
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{
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const chtype *srcp = curscr->_y[i];
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for (j = 0; j < SP->cols; j++)
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if (srcp[j] & A_BLINK)
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{
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k = j;
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while (k < SP->cols && (srcp[k] & A_BLINK))
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k++;
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PDC_transform_line(i, j, k - j, srcp + j);
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j = k;
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}
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}
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oldch = (chtype)(-1);
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}
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void PDC_doupdate(void)
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{
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PDC_napms(1);
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}
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