commit 0dbf9c8c12a5de35d1cef22349ab80e8f0a8f10e
parent 907cb8bfa69926616639f9a19127117b37326029
Author: Aurélien Aptel <aurelien.aptel@gmail.com>
Date: Thu, 20 Oct 2011 23:20:59 +0200
add dirty flag for lines
Diffstat:
| M | 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;
}
