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Show a grey ring behind black filament gauges so they stay visible.

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Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Joshua King
2026-10-20 20:46:41 -04:00
co-authored by Cursor
parent 5b8a3f24c2
commit 12f8ba2def
6 changed files with 208 additions and 11 deletions
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esphome/bambu-display/dashboard.h
+14 -1
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@@ -17,6 +17,7 @@ constexpr uint32_t MUTED = 0xAEB3B7;
constexpr uint32_t RED = 0xFF737B;
constexpr uint32_t AMBER = 0xF2C572;
constexpr uint32_t TRACK = 0x19232B;
constexpr uint32_t RING_BACKING = 0x6E767E;
inline std::string lower(std::string text) {
for (char &c : text) c = static_cast<char>(std::tolower(static_cast<unsigned char>(c)));
@@ -104,6 +105,11 @@ inline uint32_t filament_color(std::string value) {
return rgb;
}
// A black ring disappears on the black page. Anything this dark needs a grey arc behind it.
inline bool filament_is_black(uint32_t color) {
return ((color >> 16) & 0xFF) <= 0x28 && ((color >> 8) & 0xFF) <= 0x28 && (color & 0xFF) <= 0x28;
}
struct Tray {
std::string label, type, color, active;
};
@@ -299,7 +305,7 @@ struct Widgets {
lv_obj_t *elapsed = nullptr;
};
struct OverviewWidgets {
lv_obj_t *arc, *value, *finish;
lv_obj_t *arc, *value, *finish, *backing;
};
inline void set_text(lv_obj_t *label, const std::string &text) {
@@ -376,6 +382,13 @@ inline void render_overview(const Snapshot &data, const OverviewWidgets &widgets
lv_obj_set_style_arc_color(widgets.arc, lv_color_hex(filament), LV_PART_MAIN);
lv_obj_set_style_arc_color(widgets.arc, lv_color_hex(filament), LV_PART_INDICATOR);
lv_arc_set_value(widgets.arc, 100);
if (filament_is_black(filament)) {
lv_obj_set_style_arc_color(widgets.backing, lv_color_hex(RING_BACKING), LV_PART_MAIN);
lv_obj_set_style_arc_color(widgets.backing, lv_color_hex(RING_BACKING), LV_PART_INDICATOR);
lv_obj_clear_flag(widgets.backing, LV_OBJ_FLAG_HIDDEN);
} else {
lv_obj_add_flag(widgets.backing, LV_OBJ_FLAG_HIDDEN);
}
set_text(widgets.value, number(shown));
lv_obj_set_style_text_color(widgets.value, lv_color_hex(0xFFFFFF), 0);
set_text(widgets.finish, live && !data.finish_time.empty() ? data.finish_time : "--");