st

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commit b78c5085f72d66de26468e2c07fb3c72d0afe63b
parent b4b513c791e01e46399b460789b830ddfc7cb425
Author: Christoph Lohmann <20h@r-36.net>
Date:   Sun Jan 20 14:54:35 +0100

Implementing Back Color Erase (BCE).

Diffstat:
st.c | 63+++++++++++++++++++++++++++++++++++++++------------------------
st.info | 2+-
2 files changed, 40 insertions(+), 25 deletions(-)
diff --git a/st.c b/st.c @@ -152,7 +152,7 @@ typedef struct { uchar state; /* state flags */ } Glyph; -typedef Glyph* Line; +typedef Glyph *Line; typedef struct { Glyph attr; /* current char attributes */ @@ -303,7 +303,7 @@ static void strhandle(void); static void strparse(void); static void strreset(void); -static void tclearregion(int, int, int, int); +static void tclearregion(int, int, int, int, int); static void tcursor(int); static void tdeletechar(int); static void tdeleteline(int); @@ -1113,7 +1113,7 @@ treset(void) { term.bot = term.row - 1; term.mode = MODE_WRAP; - tclearregion(0, 0, term.col-1, term.row-1); + tclearregion(0, 0, term.col-1, term.row-1, 0); tmoveto(0, 0); tcursor(CURSOR_SAVE); } @@ -1157,7 +1157,7 @@ tscrolldown(int orig, int n) { LIMIT(n, 0, term.bot-orig+1); - tclearregion(0, term.bot-n+1, term.col-1, term.bot); + tclearregion(0, term.bot-n+1, term.col-1, term.bot, 0); for(i = term.bot; i >= orig+n; i--) { temp = term.line[i]; @@ -1177,7 +1177,7 @@ tscrollup(int orig, int n) { Line temp; LIMIT(n, 0, term.bot-orig+1); - tclearregion(0, orig, term.col-1, orig+n-1); + tclearregion(0, orig, term.col-1, orig+n-1, 0); for(i = orig; i <= term.bot-n; i++) { temp = term.line[i]; @@ -1305,7 +1305,7 @@ tsetchar(char *c, Glyph *attr, int x, int y) { } void -tclearregion(int x1, int y1, int x2, int y2) { +tclearregion(int x1, int y1, int x2, int y2, int bce) { int x, y, temp; if(x1 > x2) @@ -1320,8 +1320,15 @@ tclearregion(int x1, int y1, int x2, int y2) { for(y = y1; y <= y2; y++) { term.dirty[y] = 1; - for(x = x1; x <= x2; x++) - term.line[y][x].state = 0; + for(x = x1; x <= x2; x++) { + if(bce) { + term.line[y][x] = term.c.attr; + memcpy(term.line[y][x].c, " ", 2); + term.line[y][x].state |= GLYPH_SET; + } else { + term.line[y][x].state = 0; + } + } } } @@ -1334,13 +1341,13 @@ tdeletechar(int n) { term.dirty[term.c.y] = 1; if(src >= term.col) { - tclearregion(term.c.x, term.c.y, term.col-1, term.c.y); + tclearregion(term.c.x, term.c.y, term.col-1, term.c.y, 0); return; } memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph)); - tclearregion(term.col-n, term.c.y, term.col-1, term.c.y); + tclearregion(term.col-n, term.c.y, term.col-1, term.c.y, 0); } void @@ -1352,13 +1359,13 @@ tinsertblank(int n) { term.dirty[term.c.y] = 1; if(dst >= term.col) { - tclearregion(term.c.x, term.c.y, term.col-1, term.c.y); + tclearregion(term.c.x, term.c.y, term.col-1, term.c.y, 0); return; } memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph)); - tclearregion(src, term.c.y, dst - 1, term.c.y); + tclearregion(src, term.c.y, dst - 1, term.c.y, 0); } void @@ -1542,8 +1549,10 @@ tsetmode(bool priv, bool set, int *args, int narg) { case 47: case 1047: { alt = IS_SET(MODE_ALTSCREEN); - if(alt) - tclearregion(0, 0, term.col-1, term.row-1); + if(alt) { + tclearregion(0, 0, term.col-1, + term.row-1, 0); + } if(set ^ alt) /* set is always 1 or 0 */ tswapscreen(); if(*args != 1049) @@ -1662,17 +1671,19 @@ csihandle(void) { sel.bx = -1; switch(csiescseq.arg[0]) { case 0: /* below */ - tclearregion(term.c.x, term.c.y, term.col-1, term.c.y); - if(term.c.y < term.row-1) - tclearregion(0, term.c.y+1, term.col-1, term.row-1); + tclearregion(term.c.x, term.c.y, term.col-1, term.c.y, 1); + if(term.c.y < term.row-1) { + tclearregion(0, term.c.y+1, term.col-1, + term.row-1, 1); + } break; case 1: /* above */ if(term.c.y > 1) - tclearregion(0, 0, term.col-1, term.c.y-1); - tclearregion(0, term.c.y, term.c.x, term.c.y); + tclearregion(0, 0, term.col-1, term.c.y-1, 1); + tclearregion(0, term.c.y, term.c.x, term.c.y, 1); break; case 2: /* all */ - tclearregion(0, 0, term.col-1, term.row-1); + tclearregion(0, 0, term.col-1, term.row-1, 1); break; default: goto unknown; @@ -1681,13 +1692,14 @@ csihandle(void) { case 'K': /* EL -- Clear line */ switch(csiescseq.arg[0]) { case 0: /* right */ - tclearregion(term.c.x, term.c.y, term.col-1, term.c.y); + tclearregion(term.c.x, term.c.y, term.col-1, + term.c.y, 1); break; case 1: /* left */ - tclearregion(0, term.c.y, term.c.x, term.c.y); + tclearregion(0, term.c.y, term.c.x, term.c.y, 1); break; case 2: /* all */ - tclearregion(0, term.c.y, term.col-1, term.c.y); + tclearregion(0, term.c.y, term.col-1, term.c.y, 1); break; } break; @@ -1712,7 +1724,8 @@ csihandle(void) { break; case 'X': /* ECH -- Erase <n> char */ DEFAULT(csiescseq.arg[0], 1); - tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y); + tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], + term.c.y, 0); break; case 'P': /* DCH -- Delete <n> char */ DEFAULT(csiescseq.arg[0], 1); @@ -2505,6 +2518,7 @@ xinit(void) { xw.fy = 0; } + /* Events */ attrs.background_pixel = dc.col[defaultbg].pixel; attrs.border_pixel = dc.col[defaultbg].pixel; attrs.bit_gravity = NorthWestGravity; @@ -2898,6 +2912,7 @@ drawregion(int x1, int y1, int x2, int y2) { ox = x; base = new; } + sl = utf8size(new.c); memcpy(buf+ib, new.c, sl); ib += sl; diff --git a/st.info b/st.info @@ -3,7 +3,7 @@ st| simpleterm, acsc=``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~, am, -# bce, + bce, bel=^G, # blink=\E[5m, bold=\E[1m,