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perf(l2): cheaper frames -- less overdraw and blending

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Measured on the L2 (steady full frames): Settings page 37.7 -> 31.4 ms,
Display 41.5 -> 37.9, Contacts 34.6 -> 32.9, Home 37.3 -> 32.4.

- styleSurface() leaves boxes in the page colour unpainted; styleOpaque()
  for the screen and the status bar, which things slide under.
- group() cards clip their corners only while a row is held
  (rowPressable(), shared by the tappable rows).
- rowSlider(): the track an opaque tint (theme::mix(), also behind
  ACCENT_DIM) instead of 20 % accent blended every frame.
- Map buttons, pills, scale, nav bar and the Home minimap labels opaque.
- Screens drift in without the fading cover: its full-screen blend was in
  every entrance frame (page 39 -> 29 ms).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Jakub
2026-09-30 14:30:45 +02:00
co-authored by Claude Opus 5.5
parent f29c280c34
commit abbbdc5ae5
8 changed files with 72 additions and 57 deletions
Download Patch File Download Diff File Expand all files Collapse all files
examples/companion_radio/ui-lvgl/MapScreen.h
+4 -3
View File
@@ -259,7 +259,7 @@ static lv_obj_t* mapButton(lv_obj_t* parent, const char* text, lv_event_cb_t cb)
lv_obj_set_style_radius(b, theme::RADIUS, 0);
lv_obj_set_style_shadow_width(b, 0, 0);
lv_obj_set_style_bg_color(b, lv_color_hex(theme::BG), 0);
lv_obj_set_style_bg_opa(b, LV_OPA_80, 0);
lv_obj_set_style_bg_opa(b, LV_OPA_COVER, 0); // opaque: blended over the tiles, each cost ~1.6 ms a frame
lv_obj_set_style_bg_color(b, lv_color_hex(theme::SURFACE_2), LV_STATE_PRESSED);
lv_obj_set_style_border_color(b, lv_color_hex(theme::SURFACE_2), 0);
lv_obj_set_style_border_width(b, 1, 0);
@@ -271,7 +271,7 @@ static lv_obj_t* mapButton(lv_obj_t* parent, const char* text, lv_event_cb_t cb)
static lv_obj_t* mapPill(lv_obj_t* parent, const char* text) {
lv_obj_t* l = label(parent, text, THEME_FONT_SMALL, theme::TEXT);
lv_obj_set_style_bg_color(l, lv_color_hex(theme::BG), 0);
lv_obj_set_style_bg_opa(l, LV_OPA_70, 0);
lv_obj_set_style_bg_opa(l, LV_OPA_COVER, 0);
lv_obj_set_style_pad_hor(l, 5, 0);
lv_obj_set_style_pad_ver(l, 1, 0);
lv_obj_set_style_radius(l, 4, 0);
@@ -344,6 +344,7 @@ void UITask::buildMap() {
lv_obj_set_style_pad_all(body, 0, 0);
lv_obj_remove_flag(body, LV_OBJ_FLAG_SCROLLABLE);
lv_obj_set_style_bg_color(body, lv_color_hex(0x1A1A1E), 0); // unloaded / missing tiles
lv_obj_set_style_bg_opa(body, LV_OPA_COVER, 0);
lv_obj_add_event_cb(body, mapview::drawGrid, LV_EVENT_DRAW_MAIN_END, &mapview::s_grid);
lv_obj_add_flag(body, LV_OBJ_FLAG_CLICKABLE);
lv_obj_add_event_cb(body, onMapPress, LV_EVENT_PRESSED, NULL);
@@ -426,7 +427,7 @@ void UITask::buildMap() {
lv_obj_remove_flag(sc, LV_OBJ_FLAG_SCROLLABLE);
lv_obj_set_size(sc, LV_SIZE_CONTENT, LV_SIZE_CONTENT);
lv_obj_set_style_bg_color(sc, lv_color_hex(theme::BG), 0);
lv_obj_set_style_bg_opa(sc, LV_OPA_70, 0);
lv_obj_set_style_bg_opa(sc, LV_OPA_COVER, 0);
lv_obj_set_style_radius(sc, 4, 0);
lv_obj_set_style_pad_hor(sc, 5, 0);
lv_obj_set_style_pad_ver(sc, 3, 0);