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render: scrollback indicator: implement 'relative' and 'line' variants

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We now implement all combinations of 'scrollback-indicator-style' and
'scrollback-indicator-format'.
This commit is contained in:
Daniel Eklöf 2020-07-26 10:18:05 +02:00
parent 67758a7cb7
commit 2e519ed5b6
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GPG key ID: 5BBD4992C116573F
1 changed files with 41 additions and 9 deletions
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50
render.c
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@ -1303,8 +1303,6 @@ render_scrollback_position(struct terminal *term)
win->scrollback_indicator_surface = NULL;
win->scrollback_indicator_sub_surface = NULL;
LOG_INFO("destroyed indicator surfaces");
}
return;
}
@ -1334,7 +1332,6 @@ render_scrollback_position(struct terminal *term)
}
wl_subsurface_set_sync(win->scrollback_indicator_sub_surface);
LOG_INFO("instantiated indicator surfaces");
}
assert(win->scrollback_indicator_surface != NULL);
@ -1356,14 +1353,30 @@ render_scrollback_position(struct terminal *term)
* 0% -> at the beginning of the scrollback
* 100% -> at the bottom, i.e. where new lines are inserted
*/
int percentage =
unsigned percent =
rebased_view + term->rows == term->grid->num_rows
? 100
: 100 * rebased_view / term->grid->num_rows;
wchar_t text[64];
int cell_count;
/* *What* to render */
switch (term->conf->scrollback.indicator.format) {
case SCROLLBACK_INDICATOR_FORMAT_PERCENT:
swprintf(text, sizeof(text) / sizeof(text[0]), L"%u%%", percent);
cell_count = 3;
break;
case SCROLLBACK_INDICATOR_FORMAT_LINENO:
swprintf(text, sizeof(text) / sizeof(text[0]), L"%d", rebased_view + 1);
cell_count = 1 + (int)log10(term->grid->num_rows);
break;
}
const int scale = term->scale;
const int margin = 3 * scale;
const int width = 2 * margin + 3 * term->cell_width; /* TODO: this is percent only */
const int width = 2 * margin + cell_count * term->cell_width;
const int height = 2 * margin + term->cell_height;
unsigned long cookie = shm_cookie_scrollback_indicator(term);
@ -1378,9 +1391,7 @@ render_scrollback_position(struct terminal *term)
struct fcft_font *font = term->fonts[0];
pixman_color_t fg = color_hex_to_pixman(term->colors.table[7]);
wchar_t text[64];
swprintf(text, sizeof(text) / sizeof(text[0]), L"%d%%", percentage);
/* Sub-surface relative coordinates */
unsigned x = width - margin - wcslen(text) * term->cell_width;
const unsigned y = margin;
@ -1401,10 +1412,31 @@ render_scrollback_position(struct terminal *term)
x += term->cell_width;
}
/* *Where* to render - parent relative coordinates */
int surf_top = 0;
switch (term->conf->scrollback.indicator.style) {
case SCROLLBACK_INDICATOR_STYLE_NONE:
assert(false);
return;
case SCROLLBACK_INDICATOR_STYLE_FIXED:
surf_top = margin + term->cell_height;
break;
case SCROLLBACK_INDICATOR_STYLE_RELATIVE: {
int lines = term->rows - 2; /* Avoid using first and last row */
assert(lines > 0);
int on_line = 1 + percent * lines / 100;
surf_top = margin + on_line * term->cell_height;
break;
}
}
wl_subsurface_set_position(
win->scrollback_indicator_sub_surface,
(term->width - term->margins.right - width) / scale,
term->margins.top / scale + term->cell_height);
surf_top / scale);
wl_surface_attach(win->scrollback_indicator_surface, buf->wl_buf, 0, 0);
wl_surface_damage_buffer(win->scrollback_indicator_surface, 0, 0, width, height);
wl_surface_set_buffer_scale(win->scrollback_indicator_surface, scale);