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-rw-r--r--src/wins.c35
1 files changed, 21 insertions, 14 deletions
diff --git a/src/wins.c b/src/wins.c
index c129dec..d664e3e 100644
--- a/src/wins.c
+++ b/src/wins.c
@@ -357,25 +357,32 @@ void wins_scrollwin_draw_deco(struct scrollwin *sw, int hilt)
/* Display a scrolling window. */
void wins_scrollwin_display(struct scrollwin *sw)
{
- int inner_y = (conf.compact_panels ? 1 : 3);
- int inner_x = 1;
+ int inner_y = sw->y + (conf.compact_panels ? 1 : 3);
+ int inner_x = sw->x + 1;
int inner_h = sw->h - (conf.compact_panels ? 2 : 4);
int inner_w = sw->w - 2;
- if (sw->line_num > inner_h) {
- int sbar_h = MAX(inner_h * inner_h / sw->line_num, 1);
- int sbar_y = inner_y + sw->line_off * (inner_h - sbar_h) / (sw->line_num - inner_h);
- int sbar_x = sw->w - 1;
-
- draw_scrollbar(sw->win, sbar_y, sbar_x, sbar_h, inner_y,
- inner_y + inner_h - 1, 1);
- }
-
+ if (sw->line_num > inner_h)
+ draw_scrollbar(sw);
wmove(win[STA].p, 0, 0);
wnoutrefresh(sw->win);
- pnoutrefresh(sw->inner, sw->line_off, 0, sw->y + inner_y,
- sw->x + inner_x, sw->y + inner_y + inner_h - 1,
- sw->x + inner_x + inner_w - 1);
+ /*
+ (sw->line_off, 0): upper left corner in pad to display;
+ scrolling is achieved by in/decreasing sw->line_off
+ between 0 and line_num - inner.h
+
+ (Y,X)=(inner_y,inner_x): upper left corner in screen window
+ (Y,X) + (inner_h - 1,inner_w - 1): lower right corner in screen window
+
+ |-inner_w-|
+ (Y,X)-> +---------+ -
+ | | |
+ | (pad) | inner_h
+ | | |
+ +---------+ <- -
+ */
+ pnoutrefresh(sw->inner, sw->line_off, 0, inner_y, inner_x,
+ inner_y + inner_h - 1, inner_x + inner_w - 1);
wins_doupdate();
}