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feat(ui-lvgl): charts with a value axis, grid and a finger's readout

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Chart.h draws Diagnostics > History, the noise sweep and the trail's height
profile: round values up the left, labels along the bottom, a solid fill
(no transparency) and, under a finger, the sample's value and when / where.
Sim: sim_open("histdemo") / ("profdemo") fill them with made-up data.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Jakub
2026-10-06 10:22:44 +02:00
co-authored by Claude Opus 5.5
parent 1f2cb301e6
commit ab767e7ae1
5 changed files with 429 additions and 158 deletions
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examples/companion_radio/ui-lvgl/UITask.cpp
+32
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@@ -3530,6 +3530,7 @@ void UITask::nodeAction(uint8_t action) {
static lv_obj_t* switchRow(lv_obj_t* parent, const char* text, const char* sub, uint8_t* pref); // below
#include "MapScreen.h"
#include "Chart.h"
#include "ProfileView.h"
#include "NavMap.h"
#include "MapAreas.h"
@@ -4641,6 +4642,37 @@ extern "C" EMSCRIPTEN_KEEPALIVE void sim_open(const char* name) {
if (!strcmp(name, "region0")) { s_ui->mapRegionPopup(0); return; }
if (!strcmp(name, "advert")) { s_ui->advertPopup(); return; }
if (!strcmp(name, "trailsave")) { s_ui->navToolAction(navmap::TL_TRAIL_SAVE); return; } // Map tools > Save
if (!strcmp(name, "histdemo")) { // 8 h of made-up history, for the charts
using namespace diagview;
for (int i = 0; i < 96; i++) {
s_hist.batt.push((int16_t)(4150 - i * 4 + (i % 7) * 3));
s_hist.noise.push((int16_t)(-112 + (i % 11 == 0 ? 6 : 0) + (i / 24)));
s_hist.traffic.push((int16_t)((i * 37) % 13 + (i % 16 == 0 ? 20 : 0)));
}
for (int i = 0; i < 32; i++) s_hist.snr.push((int16_t)(4 * (8 - (i * 7) % 19)));
s_hist.version++;
s_near.f0 = 869.525f - s_near.step * (s_near.n / 2); // and a noise sweep
for (int i = 0; i < s_near.n; i++) s_near.v[i] = (int16_t)(-118 + (i % 9 == 0 ? 7 : (i * 5) % 4));
s_floor_med = -116; s_floor_lo = -118;
s_noise_have = true;
return;
}
if (!strcmp(name, "profdemo")) { // a made-up height profile in a popup, for the chart
using namespace profileview;
s_prof = trailprofile::Sampler();
for (int i = 0; i < 100; i++) {
s_prof.dist[i] = i * 62.0f;
s_prof.alt[i] = (int16_t)(420 + 80 * sinf(i / 14.0f) + i * 1.5f);
s_prof.st.add(s_prof.alt[i]);
}
s_prof.n = 100; s_prof.total = 99 * 62.0f;
lv_obj_t* box = lv_obj_create(lv_layer_top());
styleSurface(box, theme::BG);
lv_obj_set_size(box, 304, 132);
lv_obj_center(box);
profileChart(box, 120);
return;
}
if (!strcmp(name, "savedtrail0")) { navmap::scanTrails(); s_ui->savedTrailPopup(0); return; }
if (!strncmp(name, "trail@", 6)) { // "trail@name.trl" from /sdcard/trails: Load, as the saved-trail popup does
navmap::scanTrails();