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-rw-r--r--screen-redraw.c8
-rw-r--r--tty.c21
2 files changed, 22 insertions, 7 deletions
diff --git a/screen-redraw.c b/screen-redraw.c
index a10acd97..167389b4 100644
--- a/screen-redraw.c
+++ b/screen-redraw.c
@@ -368,7 +368,7 @@ screen_redraw_draw_pane_status(struct screen_redraw_ctx *ctx)
/* Right not visible. */
i = 0;
x = xoff - ctx->ox;
- width = size - (xoff + size - ctx->sx);
+ width = size - x;
}
if (ctx->top)
@@ -628,7 +628,7 @@ screen_redraw_draw_pane(struct screen_redraw_ctx *ctx, struct window_pane *wp)
/* Right not visible. */
i = 0;
x = wp->xoff - ctx->ox;
- width = wp->sx - (wp->xoff + wp->sx - ctx->sx);
+ width = ctx->sx - x;
}
log_debug("%s: %s %%%u line %u,%u at %u,%u, width %u",
__func__, c->name, wp->id, i, j, x, y, width);
@@ -674,7 +674,7 @@ screen_redraw_draw_number(struct screen_redraw_ctx *ctx, struct window_pane *wp)
} else {
/* Right not visible. */
xoff = wp->xoff - ctx->ox;
- sx = wp->sx - (wp->xoff + wp->sx - ctx->sx);
+ sx = wp->sx - xoff;
}
if (wp->yoff >= ctx->oy && wp->yoff + wp->sy <= ctx->oy + ctx->sy) {
/* All visible. */
@@ -692,7 +692,7 @@ screen_redraw_draw_number(struct screen_redraw_ctx *ctx, struct window_pane *wp)
} else {
/* Bottom not visible. */
yoff = wp->yoff - ctx->oy;
- sy = wp->sy - (wp->yoff + wp->sy - ctx->sy);
+ sy = wp->sy - yoff;
}
if (ctx->top)
diff --git a/tty.c b/tty.c
index 10ae1617..bf4c1424 100644
--- a/tty.c
+++ b/tty.c
@@ -936,8 +936,13 @@ tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
/* Right not visible. */
*i = 0;
*x = (ctx->xoff + px) - ctx->ox;
- *rx = nx - ((ctx->xoff + px) + nx - ctx->sx);
+ *rx = ctx->sx - *x;
}
+ if (*rx > nx)
+ fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
+ if (nx > *rx)
+ *rx = nx;
+
return (1);
}
@@ -1028,8 +1033,13 @@ tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
/* Right not visible. */
*i = 0;
*x = (ctx->xoff + px) - ctx->ox;
- *rx = nx - ((ctx->xoff + px) + nx - ctx->sx);
+ *rx = ctx->sx - *x;
}
+ if (*rx > nx)
+ fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
+ if (nx > *rx)
+ *rx = nx;
+
if (yoff >= ctx->oy && yoff + ny <= ctx->oy + ctx->sy) {
/* All visible. */
*j = 0;
@@ -1049,8 +1059,13 @@ tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
/* Right not visible. */
*j = 0;
*y = (ctx->yoff + py) - ctx->oy;
- *ry = ny - ((ctx->yoff + py) + ny - ctx->sy);
+ *ry = ctx->sy - *y;
}
+ if (*ry > ny)
+ fatalx("%s: y too big, %u > %u", __func__, *ry, ny);
+ if (ny > *ry)
+ *ry = ny;
+
return (1);
}