st

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commit 0dbf9c8c12a5de35d1cef22349ab80e8f0a8f10e
parent 907cb8bfa69926616639f9a19127117b37326029
Author: Aurélien Aptel <aurelien.aptel@gmail.com>
Date:   Thu Oct 20 23:20:59 +0200

add dirty flag for lines

Diffstat:
st.c | 43+++++++++++++++++++++++++++++++++++++++----
1 file changed, 39 insertions(+), 4 deletions(-)
diff --git a/st.c b/st.c @@ -111,6 +111,7 @@ typedef struct { int col; /* nb col */ Line* line; /* screen */ Line* alt; /* alternate screen */ + char* dirty; /* dirtyness of lines */ TCursor c; /* cursor */ int top; /* top scroll limit */ int bot; /* bottom scroll limit */ @@ -203,6 +204,7 @@ static void tsetattr(int*, int); static void tsetchar(char*); static void tsetscroll(int, int); static void tswapscreen(void); +static void tfulldirt(void); static void ttynew(void); static void ttyread(void); @@ -749,6 +751,14 @@ ttyresize(int x, int y) { } void +tfulldirt(void) +{ + int i; + for(i = 0; i < term.row; i++) + term.dirty[i] = 1; +} + +void tcursor(int mode) { static TCursor c; @@ -777,9 +787,12 @@ tnew(int col, int row) { term.row = row, term.col = col; term.line = malloc(term.row * sizeof(Line)); term.alt = malloc(term.row * sizeof(Line)); + term.dirty = malloc(term.row * sizeof(*term.dirty)); + for(row = 0; row < term.row; row++) { term.line[row] = malloc(term.col * sizeof(Glyph)); term.alt [row] = malloc(term.col * sizeof(Glyph)); + term.dirty[row] = 0; } /* setup screen */ treset(); @@ -791,6 +804,7 @@ tswapscreen(void) { term.line = term.alt; term.alt = tmp; term.mode ^= MODE_ALTSCREEN; + tfulldirt(); } void @@ -806,6 +820,9 @@ tscrolldown(int orig, int n) { temp = term.line[i]; term.line[i] = term.line[i-n]; term.line[i-n] = temp; + + term.dirty[i] = 1; + term.dirty[i-n] = 1; } selscroll(orig, n); @@ -823,6 +840,9 @@ tscrollup(int orig, int n) { temp = term.line[i]; term.line[i] = term.line[i+n]; term.line[i+n] = temp; + + term.dirty[i] = 1; + term.dirty[i+n] = 1; } selscroll(orig, -n); @@ -896,6 +916,7 @@ tmoveto(int x, int y) { void tsetchar(char *c) { + term.dirty[term.c.y] = 1; term.line[term.c.y][term.c.x] = term.c.attr; memcpy(term.line[term.c.y][term.c.x].c, c, UTF_SIZ); term.line[term.c.y][term.c.x].state |= GLYPH_SET; @@ -915,9 +936,11 @@ tclearregion(int x1, int y1, int x2, int y2) { LIMIT(y1, 0, term.row-1); LIMIT(y2, 0, term.row-1); - for(y = y1; y <= y2; y++) + for(y = y1; y <= y2; y++) { + term.dirty[y] = 1; for(x = x1; x <= x2; x++) term.line[y][x].state = 0; + } } void @@ -925,6 +948,8 @@ tdeletechar(int n) { int src = term.c.x + n; int dst = term.c.x; int size = term.col - src; + + term.dirty[term.c.y] = 1; if(src >= term.col) { tclearregion(term.c.x, term.c.y, term.col-1, term.c.y); @@ -940,6 +965,8 @@ tinsertblank(int n) { int dst = src + n; int size = term.col - dst; + term.dirty[term.c.y] = 1; + if(dst >= term.col) { tclearregion(term.c.x, term.c.y, term.col-1, term.c.y); return; @@ -1411,7 +1438,8 @@ tputc(char *c) { } } } else { - if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey)) sel.bx = -1; + if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey)) + sel.bx = -1; switch(ascii) { case '\t': tputtab(); @@ -1479,9 +1507,11 @@ tresize(int col, int row) { /* resize to new height */ term.line = realloc(term.line, row * sizeof(Line)); term.alt = realloc(term.alt, row * sizeof(Line)); + term.dirty = realloc(term.dirty, row * sizeof(*term.dirty)); /* resize each row to new width, zero-pad if needed */ for(i = 0; i < minrow; i++) { + term.dirty[i] = 1; term.line[i] = realloc(term.line[i], col * sizeof(Glyph)); term.alt[i] = realloc(term.alt[i], col * sizeof(Glyph)); for(x = mincol; x < col; x++) { @@ -1492,6 +1522,7 @@ tresize(int col, int row) { /* allocate any new rows */ for(/* i == minrow */; i < row; i++) { + term.dirty[i] = 1; term.line[i] = calloc(col, sizeof(Glyph)); term.alt [i] = calloc(col, sizeof(Glyph)); } @@ -1502,6 +1533,7 @@ tresize(int col, int row) { tmoveto(term.c.x, term.c.y); /* reset scrolling region */ tsetscroll(0, row-1); + return (slide > 0); } @@ -1792,8 +1824,11 @@ drawregion(int x1, int y1, int x2, int y2) { if(!(xw.state & WIN_VISIBLE)) return; - xclear(x1, y1, x2-1, y2-1); for(y = y1; y < y2; y++) { + if(!term.dirty[y]) + continue; + xclear(0, y, term.col, y); + term.dirty[y] = 0; base = term.line[y][0]; ic = ib = ox = 0; for(x = x1; x < x2; x++) { @@ -1801,7 +1836,7 @@ drawregion(int x1, int y1, int x2, int y2) { if(sel.bx != -1 && *(new.c) && selected(x, y)) new.mode ^= ATTR_REVERSE; if(ib > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) || - ib >= DRAW_BUF_SIZ-UTF_SIZ)) { + ib >= DRAW_BUF_SIZ-UTF_SIZ)) { xdraws(buf, base, ox, y, ic, ib); ic = ib = 0; }