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bar/wayland: guess scale when no 'output' has been configured

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Daniel Eklöf 2020-07-10 10:48:17 +02:00
parent d80fbd4084
commit 31a4cddde3
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GPG key ID: 5BBD4992C116573F
1 changed files with 44 additions and 19 deletions
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61
bar/wayland.c
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@ -392,11 +392,9 @@ output_scale(void *data, struct wl_output *wl_output, int32_t factor)
mon->scale = factor; mon->scale = factor;
if (mon->backend->monitor == mon) { if (mon->backend->monitor == mon)
mon->backend->scale = mon->scale;
update_size(mon->backend); update_size(mon->backend);
} }
}
static const struct wl_output_listener output_listener = { static const struct wl_output_listener output_listener = {
@ -752,33 +750,67 @@ err:
return NULL; return NULL;
} }
static int
guess_scale(const struct wayland_backend *backend)
{
if (tll_length(backend->monitors) == 0)
return 1;
bool all_have_same_scale = true;
int last_scale = -1;
tll_foreach(backend->monitors, it) {
if (last_scale == -1)
last_scale = it->item.scale;
else if (last_scale != it->item.scale) {
all_have_same_scale = false;
break;
}
}
if (all_have_same_scale) {
assert(last_scale >= 1);
return last_scale;
}
return 1;
}
static bool static bool
update_size(struct wayland_backend *backend) update_size(struct wayland_backend *backend)
{ {
struct bar *_bar = backend->bar; struct bar *_bar = backend->bar;
struct private *bar = _bar->private; struct private *bar = _bar->private;
const struct monitor *mon = backend->monitor;
const int scale = mon != NULL ? mon->scale : guess_scale(backend);
if (backend->scale == scale)
return true;
backend->scale = scale;
int height = bar->height_with_border; int height = bar->height_with_border;
height /= backend->scale; height /= scale;
height *= backend->scale; height *= scale;
bar->height = height - 2 * bar->border.width; bar->height = height - 2 * bar->border.width;
bar->height_with_border = height; bar->height_with_border = height;
zwlr_layer_surface_v1_set_size( zwlr_layer_surface_v1_set_size(
backend->layer_surface, 0, bar->height_with_border / backend->scale); backend->layer_surface, 0, bar->height_with_border / scale);
zwlr_layer_surface_v1_set_exclusive_zone( zwlr_layer_surface_v1_set_exclusive_zone(
backend->layer_surface, backend->layer_surface,
(bar->height_with_border + (bar->location == BAR_TOP (bar->height_with_border + (bar->location == BAR_TOP
? bar->border.bottom_margin ? bar->border.bottom_margin
: bar->border.top_margin)) : bar->border.top_margin))
/ backend->scale); / scale);
zwlr_layer_surface_v1_set_margin( zwlr_layer_surface_v1_set_margin(
backend->layer_surface, backend->layer_surface,
bar->border.top_margin / backend->scale, bar->border.top_margin / scale,
bar->border.right_margin / backend->scale, bar->border.right_margin / scale,
bar->border.bottom_margin / backend->scale, bar->border.bottom_margin / scale,
bar->border.left_margin / backend->scale bar->border.left_margin / scale
); );
/* Trigger a 'configure' event, after which we'll have the width */ /* Trigger a 'configure' event, after which we'll have the width */
@ -1023,16 +1055,9 @@ surface_enter(void *data, struct wl_surface *wl_surface,
continue; continue;
if (backend->monitor != mon) { if (backend->monitor != mon) {
int old_scale = backend->monitor != NULL ? backend->monitor->scale : 1;
int new_scale = mon->scale;
backend->monitor = mon; backend->monitor = mon;
if (old_scale != new_scale) {
backend->scale = mon->scale;
update_size(backend); update_size(backend);
} }
}
break; break;
} }
} }