feat(display): night-dim backlight window for screensaver
- DisplaySettings: nightDimEnabled/startHour/endHour/duty (default 22:00-07:00 at duty 20), persisted in display.properties - Display settings page: Night dim switch + Dim from/until hour dropdowns + Dim brightness slider - DisplayIdle: screensaver runs at the dimmed level when the local hour is inside the window (wrap-around aware); falls back to the regular duty when time is unknown (year < 2025)
This commit is contained in:
Adolfo Reyna
@@ -42,6 +42,10 @@ struct Context {
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lv_obj_t* timeoutSwitch = nullptr;
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lv_obj_t* timeoutDropdown = nullptr;
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lv_obj_t* screensaverDropdown = nullptr;
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lv_obj_t* nightDimSwitch = nullptr;
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lv_obj_t* nightDimStartDropdown = nullptr;
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lv_obj_t* nightDimEndDropdown = nullptr;
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lv_obj_t* nightDimDutySlider = nullptr;
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};
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@@ -154,6 +158,82 @@ void onScreensaverChanged(lv_event_t* event) {
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}
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}
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static void setNightDimControlsEnabled(Context* ctx, bool enabled) {
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if (ctx->nightDimStartDropdown != nullptr) {
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if (enabled) {
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lv_obj_clear_state(ctx->nightDimStartDropdown, LV_STATE_DISABLED);
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} else {
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lv_obj_add_state(ctx->nightDimStartDropdown, LV_STATE_DISABLED);
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}
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}
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if (ctx->nightDimEndDropdown != nullptr) {
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if (enabled) {
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lv_obj_clear_state(ctx->nightDimEndDropdown, LV_STATE_DISABLED);
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} else {
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lv_obj_add_state(ctx->nightDimEndDropdown, LV_STATE_DISABLED);
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}
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}
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if (ctx->nightDimDutySlider != nullptr) {
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if (enabled) {
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lv_obj_clear_state(ctx->nightDimDutySlider, LV_STATE_DISABLED);
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} else {
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lv_obj_add_state(ctx->nightDimDutySlider, LV_STATE_DISABLED);
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}
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}
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}
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static const char* hourOptions() {
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// 00..23, one per line
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static const char* options =
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"00\n01\n02\n03\n04\n05\n06\n07\n08\n09\n10\n11\n"
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"12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23";
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return options;
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}
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void onNightDimSwitch(lv_event_t* event) {
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auto* ctx = static_cast<Context*>(lv_event_get_user_data(event));
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auto* sw = static_cast<lv_obj_t*>(lv_event_get_target(event));
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bool enabled = lv_obj_has_state(sw, LV_STATE_CHECKED);
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ctx->displaySettings.nightDimEnabled = enabled;
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ctx->displaySettingsUpdated = true;
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setNightDimControlsEnabled(ctx, enabled);
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}
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void onNightDimStartChanged(lv_event_t* event) {
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auto* ctx = static_cast<Context*>(lv_event_get_user_data(event));
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auto* dropdown = static_cast<lv_obj_t*>(lv_event_get_target(event));
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uint32_t idx = lv_dropdown_get_selected(dropdown);
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if (idx > 23) {
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return;
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}
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ctx->displaySettings.nightDimStartHour = static_cast<uint8_t>(idx);
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ctx->displaySettingsUpdated = true;
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}
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void onNightDimEndChanged(lv_event_t* event) {
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auto* ctx = static_cast<Context*>(lv_event_get_user_data(event));
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auto* dropdown = static_cast<lv_obj_t*>(lv_event_get_target(event));
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uint32_t idx = lv_dropdown_get_selected(dropdown);
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if (idx > 23) {
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return;
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}
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ctx->displaySettings.nightDimEndHour = static_cast<uint8_t>(idx);
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ctx->displaySettingsUpdated = true;
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}
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void onNightDimDutyChanged(lv_event_t* event) {
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auto* ctx = static_cast<Context*>(lv_event_get_user_data(event));
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auto* slider = static_cast<lv_obj_t*>(lv_event_get_target(event));
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int32_t value = lv_slider_get_value(slider);
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if (value < 0) {
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value = 0;
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} else if (value > 255) {
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value = 255;
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}
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ctx->displaySettings.nightDimDuty = static_cast<uint8_t>(value);
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ctx->displaySettingsUpdated = true;
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}
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void createWidgets(lv_obj_t* parent, void* userData) {
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auto* ctx = static_cast<Context*>(userData);
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@@ -314,6 +394,71 @@ void createWidgets(lv_obj_t* parent, void* userData) {
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if (!ctx->displaySettings.backlightTimeoutEnabled) {
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lv_obj_add_state(ctx->screensaverDropdown, LV_STATE_DISABLED);
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}
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// Night dim: dim the backlight while the screensaver is up, during a time window
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auto* night_dim_wrapper = lv_obj_create(main_wrapper);
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lv_obj_set_size(night_dim_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
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lv_obj_set_style_pad_all(night_dim_wrapper, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_border_width(night_dim_wrapper, 0, LV_STATE_DEFAULT);
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auto* night_dim_label = lv_label_create(night_dim_wrapper);
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lv_label_set_text(night_dim_label, "Night dim");
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lv_obj_align(night_dim_label, LV_ALIGN_LEFT_MID, 0, 0);
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ctx->nightDimSwitch = lv_switch_create(night_dim_wrapper);
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if (ctx->displaySettings.nightDimEnabled) {
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lv_obj_add_state(ctx->nightDimSwitch, LV_STATE_CHECKED);
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}
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lv_obj_align(ctx->nightDimSwitch, LV_ALIGN_RIGHT_MID, 0, 0);
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lv_obj_add_event_cb(ctx->nightDimSwitch, onNightDimSwitch, LV_EVENT_VALUE_CHANGED, ctx);
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auto* night_dim_start_wrapper = lv_obj_create(main_wrapper);
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lv_obj_set_size(night_dim_start_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
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lv_obj_set_style_pad_all(night_dim_start_wrapper, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_border_width(night_dim_start_wrapper, 0, LV_STATE_DEFAULT);
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auto* night_dim_start_label = lv_label_create(night_dim_start_wrapper);
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lv_label_set_text(night_dim_start_label, "Dim from");
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lv_obj_align(night_dim_start_label, LV_ALIGN_LEFT_MID, 0, 0);
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ctx->nightDimStartDropdown = lv_dropdown_create(night_dim_start_wrapper);
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lv_dropdown_set_options(ctx->nightDimStartDropdown, hourOptions());
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lv_obj_align(ctx->nightDimStartDropdown, LV_ALIGN_RIGHT_MID, 0, 0);
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lv_obj_add_event_cb(ctx->nightDimStartDropdown, onNightDimStartChanged, LV_EVENT_VALUE_CHANGED, ctx);
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lv_dropdown_set_selected(ctx->nightDimStartDropdown, ctx->displaySettings.nightDimStartHour > 23 ? 0 : ctx->displaySettings.nightDimStartHour);
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auto* night_dim_end_wrapper = lv_obj_create(main_wrapper);
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lv_obj_set_size(night_dim_end_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
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lv_obj_set_style_pad_all(night_dim_end_wrapper, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_border_width(night_dim_end_wrapper, 0, LV_STATE_DEFAULT);
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auto* night_dim_end_label = lv_label_create(night_dim_end_wrapper);
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lv_label_set_text(night_dim_end_label, "Dim until");
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lv_obj_align(night_dim_end_label, LV_ALIGN_LEFT_MID, 0, 0);
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ctx->nightDimEndDropdown = lv_dropdown_create(night_dim_end_wrapper);
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lv_dropdown_set_options(ctx->nightDimEndDropdown, hourOptions());
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lv_obj_align(ctx->nightDimEndDropdown, LV_ALIGN_RIGHT_MID, 0, 0);
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lv_obj_add_event_cb(ctx->nightDimEndDropdown, onNightDimEndChanged, LV_EVENT_VALUE_CHANGED, ctx);
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lv_dropdown_set_selected(ctx->nightDimEndDropdown, ctx->displaySettings.nightDimEndHour > 23 ? 0 : ctx->displaySettings.nightDimEndHour);
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auto* night_dim_duty_wrapper = lv_obj_create(main_wrapper);
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lv_obj_set_size(night_dim_duty_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
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lv_obj_set_style_pad_all(night_dim_duty_wrapper, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_border_width(night_dim_duty_wrapper, 0, LV_STATE_DEFAULT);
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auto* night_dim_duty_label = lv_label_create(night_dim_duty_wrapper);
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lv_label_set_text(night_dim_duty_label, "Dim brightness");
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lv_obj_align(night_dim_duty_label, LV_ALIGN_LEFT_MID, 0, 0);
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ctx->nightDimDutySlider = lv_slider_create(night_dim_duty_wrapper);
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lv_obj_set_width(ctx->nightDimDutySlider, LV_PCT(50));
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lv_obj_align(ctx->nightDimDutySlider, LV_ALIGN_RIGHT_MID, 0, 0);
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lv_slider_set_range(ctx->nightDimDutySlider, 0, 255);
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lv_slider_set_value(ctx->nightDimDutySlider, ctx->displaySettings.nightDimDuty, LV_ANIM_OFF);
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lv_obj_add_event_cb(ctx->nightDimDutySlider, onNightDimDutyChanged, LV_EVENT_VALUE_CHANGED, ctx);
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setNightDimControlsEnabled(ctx, ctx->displaySettings.nightDimEnabled);
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}
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}
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