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perf(l2): long lists build only the rows on screen

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New message, Nodes (and its Scan popup), Admin and Messages show their
items through one virtual list: a screenful of rows, handed to the next
item as one scrolls out, the scroll extent from the items' heights. 256
contacts: 522 objects and ~950 ms of filling in (frames up to 96 ms)
before, 19 objects at once now; a scrolled frame 28.5 -> 11.7 ms. Nodes
257 -> 49 objects. A new message rewrites Messages' rows in place
(46 -> 20 ms) instead of building the screen again; it's rebuilt only
when "Read all" comes or goes. A held row keeps what it shows until let
go. Perf tools: -D PERF_LISTS, -D PERF_LIST_MUL.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Jakub
2026-10-01 20:56:14 +02:00
co-authored by Claude Opus 5.5
parent 71e3dd8a8b
commit c8e1f4a604
7 changed files with 531 additions and 158 deletions
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examples/companion_radio/ui-lvgl/ChannelScreen.h
+3 -1
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@@ -41,8 +41,10 @@ static void onChanDropdown(lv_event_t* e) {
choiceSelected((lv_obj_t*)lv_event_get_target(e)));
}
static void onChanRowHold(lv_event_t* e) {
intptr_t i = vlist::arg(e);
if (i < 0) return;
lv_indev_wait_release(lv_indev_active()); // the hold isn't also a tap that opens the channel
s_ui->channelMenu((int)(uintptr_t)lv_event_get_user_data(e));
s_ui->channelMenu((int)i);
}
static void onChanThreadMenu(lv_event_t* e) { (void)e; s_ui->channelMenu(-1); }
static void onChanAdd(lv_event_t* e) { (void)e; s_ui->showChannelEdit(-1); }