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Show a confirmed shutdown screen before cutting power (#555)

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This commit is contained in:
Crazypedia
2026-07-10 02:49:46 -04:00
committed by GitHub
parent 7a7f09be35
commit 0922c4d55b
4 changed files with 122 additions and 13 deletions
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Tactility/Source/Tactility.cpp
+2
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@@ -123,6 +123,7 @@ namespace app {
namespace localesettings { extern const AppManifest manifest; }
namespace notes { extern const AppManifest manifest; }
namespace power { extern const AppManifest manifest; }
namespace poweroff { extern const AppManifest manifest; }
namespace selectiondialog { extern const AppManifest manifest; }
namespace settings { extern const AppManifest manifest; }
namespace setup { extern const AppManifest manifest; }
@@ -177,6 +178,7 @@ static void registerInternalApps() {
addAppManifest(app::launcher::manifest);
addAppManifest(app::localesettings::manifest);
addAppManifest(app::notes::manifest);
addAppManifest(app::poweroff::manifest);
addAppManifest(app::settings::manifest);
addAppManifest(app::selectiondialog::manifest);
addAppManifest(app::setup::manifest);
Tactility/Source/app/launcher/Launcher.cpp
+8 -13
View File
@@ -66,6 +66,11 @@ class LauncherApp final : public App {
return apps_button;
}
static void onAppPressed(lv_event_t* e) {
auto* appId = static_cast<const char*>(lv_event_get_user_data(e));
start(appId);
}
static bool shouldShowPowerButton() {
bool show_power_button = false;
hal::findDevices<hal::power::PowerDevice>(hal::Device::Type::Power, [&show_power_button](const auto& device) {
@@ -79,18 +84,6 @@ class LauncherApp final : public App {
return show_power_button;
}
static void onAppPressed(lv_event_t* e) {
auto* appId = static_cast<const char*>(lv_event_get_user_data(e));
start(appId);
}
static void onPowerOffPressed(lv_event_t* e) {
auto power = hal::findFirstDevice<hal::power::PowerDevice>(hal::Device::Type::Power);
if (power != nullptr && power->supportsPowerOff()) {
power->powerOff();
}
}
// The screen object outlives the launcher's views (it's recreated by GuiService::redraw()
// via lv_obj_clean() on every app switch), so the LV_EVENT_SIZE_CHANGED callback registered
// on it must be removed once buttons_wrapper is destroyed, to avoid a dangling user-data
@@ -202,11 +195,13 @@ public:
lv_obj_add_event_cb(lv_obj_get_screen(parent), onButtonsWrapperResized, LV_EVENT_SIZE_CHANGED, buttons_wrapper);
lv_obj_add_event_cb(buttons_wrapper, onButtonsWrapperDeleted, LV_EVENT_DELETE, nullptr);
// Some devices (e.g. T-Lora Pager) have no other way to power off, so the
// button stays in the launcher; the confirmation flow lives in the PowerOff app.
if (shouldShowPowerButton()) {
auto* power_button = lv_button_create(parent);
lv_obj_set_style_pad_all(power_button, 8, 0);
lv_obj_align(power_button, LV_ALIGN_BOTTOM_MID, 0, -10);
lv_obj_add_event_cb(power_button, onPowerOffPressed, LV_EVENT_SHORT_CLICKED, nullptr);
lv_obj_add_event_cb(power_button, onAppPressed, LV_EVENT_SHORT_CLICKED, (void*)"PowerOff");
lv_obj_set_style_shadow_width(power_button, 0, LV_STATE_DEFAULT);
lv_obj_set_style_bg_opa(power_button, 0, LV_PART_MAIN);
Tactility/Source/app/poweroff/PowerOff.cpp
+104
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@@ -0,0 +1,104 @@
#include <Tactility/app/AppContext.h>
#include <Tactility/app/AppRegistration.h>
#include <Tactility/hal/display/DisplayDevice.h>
#include <Tactility/hal/power/PowerDevice.h>
#include <Tactility/service/loader/Loader.h>
#include <lvgl.h>
#include <tactility/hal/Device.h>
#include <tactility/lvgl_fonts.h>
#include <tactility/lvgl_icon_shared.h>
namespace tt::app::poweroff {
extern const AppManifest manifest;
class PowerOffApp final : public App {
/** Replaces the screen with a plain "powered off" message, forces it to draw
* synchronously, and waits for the display to confirm the draw physically
* finished. On e-paper this is what's left showing once power cuts, so it
* doubles as visual confirmation that the device shut down cleanly rather
* than crashed or hung. Called from an LVGL button click callback, so it's
* already running on the LVGL thread. */
static void showPoweredOffScreenAndWait(hal::display::DisplayDevice* display) {
auto* screen = lv_obj_create(nullptr);
lv_obj_set_style_bg_color(screen, lv_color_white(), 0);
lv_obj_set_flex_flow(screen, LV_FLEX_FLOW_COLUMN);
lv_obj_set_flex_align(screen, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
auto* title = lv_label_create(screen);
lv_label_set_text(title, "Tactility OS");
lv_obj_set_style_text_font(title, lvgl_get_text_font(FONT_SIZE_LARGE), 0);
lv_obj_set_style_text_color(title, lv_color_black(), 0);
auto* subtitle = lv_label_create(screen);
lv_label_set_text(subtitle, "Powered off");
lv_obj_set_style_text_color(subtitle, lv_color_black(), 0);
lv_screen_load(screen);
if (display != nullptr) {
auto* lvgl_display = display->getLvglDisplay();
if (lvgl_display != nullptr) {
lv_refr_now(lvgl_display);
}
display->waitForFlushComplete();
}
}
static void onYesPressed(lv_event_t* /*event*/) {
auto power = hal::findFirstDevice<hal::power::PowerDevice>(hal::Device::Type::Power);
if (power == nullptr || !power->supportsPowerOff()) {
return;
}
auto display = hal::findFirstDevice<hal::display::DisplayDevice>(hal::Device::Type::Display);
showPoweredOffScreenAndWait(display.get());
power->powerOff();
}
static void onNoPressed(lv_event_t* /*event*/) {
stop(manifest.appId);
}
public:
void onShow(AppContext& /*app*/, lv_obj_t* parent) override {
lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);
lv_obj_set_flex_align(parent, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
auto* label = lv_label_create(parent);
lv_label_set_text(label, "Power off?");
lv_obj_set_style_text_font(label, lvgl_get_text_font(FONT_SIZE_LARGE), 0);
auto* button_wrapper = lv_obj_create(parent);
lv_obj_set_flex_flow(button_wrapper, LV_FLEX_FLOW_ROW);
lv_obj_set_size(button_wrapper, LV_SIZE_CONTENT, LV_SIZE_CONTENT);
lv_obj_set_style_pad_all(button_wrapper, 0, 0);
lv_obj_set_style_border_width(button_wrapper, 0, 0);
lv_obj_set_flex_align(button_wrapper, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
auto* yes_button = lv_button_create(button_wrapper);
auto* yes_label = lv_label_create(yes_button);
lv_label_set_text(yes_label, "Yes");
lv_obj_add_event_cb(yes_button, onYesPressed, LV_EVENT_SHORT_CLICKED, nullptr);
auto* no_button = lv_button_create(button_wrapper);
auto* no_label = lv_label_create(no_button);
lv_label_set_text(no_label, "No");
lv_obj_add_event_cb(no_button, onNoPressed, LV_EVENT_SHORT_CLICKED, nullptr);
}
};
extern const AppManifest manifest = {
.appId = "PowerOff",
.appName = "Power Off",
.appIcon = LVGL_ICON_SHARED_POWER_SETTINGS_NEW,
.appCategory = Category::Settings,
.appFlags = AppManifest::Flags::HideStatusBar,
.createApp = create<PowerOffApp>
};
} // namespace