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flashlight: Add multiple display modes #2379

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flashlight: Add multiple display modes #2379

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78 changes: 69 additions & 9 deletions src/displayapp/screens/FlashLight.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ FlashLight::FlashLight(System::SystemTask& systemTask, Controllers::BrightnessCo
: wakeLock(systemTask), brightnessController {brightnessController} {

previousBrightnessLevel = brightnessController.Level();
currentMode = Mode::Off;
brightnessController.Set(Controllers::BrightnessController::Levels::Low);

flashLight = lv_label_create(lv_scr_act(), nullptr);
Expand Down Expand Up @@ -51,14 +52,31 @@ FlashLight::FlashLight(System::SystemTask& systemTask, Controllers::BrightnessCo
}

FlashLight::~FlashLight() {
if (taskRefresh != nullptr) {
lv_task_del(taskRefresh);
}
lv_obj_clean(lv_scr_act());
lv_obj_set_style_local_bg_color(lv_scr_act(), LV_OBJ_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_BLACK);
brightnessController.Set(previousBrightnessLevel);
}

void FlashLight::SetColors() {
lv_color_t bgColor = isOn ? LV_COLOR_WHITE : LV_COLOR_BLACK;
lv_color_t fgColor = isOn ? Colors::lightGray : LV_COLOR_WHITE;
lv_color_t bgColor;
lv_color_t fgColor;

if (currentMode == Mode::Off) {
bgColor = LV_COLOR_BLACK;
fgColor = LV_COLOR_MAROON;
} else if (currentMode == Mode::Red) {
bgColor = LV_COLOR_RED;
fgColor = LV_COLOR_BLACK;
} else if (currentMode == Mode::White) {
bgColor = LV_COLOR_WHITE;
fgColor = LV_COLOR_GRAY;
} else {
bgColor = LV_COLOR_WHITE;
fgColor = LV_COLOR_GRAY;
}

lv_obj_set_style_local_bg_color(lv_scr_act(), LV_OBJ_PART_MAIN, LV_STATE_DEFAULT, bgColor);
lv_obj_set_style_local_text_color(flashLight, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, fgColor);
Expand All @@ -85,23 +103,47 @@ void FlashLight::SetIndicators() {
}

void FlashLight::Toggle() {
isOn = !isOn;
SetColors();
if (isOn) {
brightnessController.Set(brightnessLevel);
// Clean up strobe task if leaving strobe mode
if (currentMode == Mode::Strobe && taskRefresh != nullptr) {
lv_task_del(taskRefresh);
taskRefresh = nullptr;
}

if (currentMode == Mode::Off) {
currentMode = Mode::Red;
} else if (currentMode == Mode::Red) {
currentMode = Mode::White;
} else if (currentMode == Mode::White) {
currentMode = Mode::Strobe;
} else {
currentMode = Mode::Off;
}

// Create strobe task if entering strobe mode
if (currentMode == Mode::Strobe) {
taskRefresh = lv_task_create(RefreshTaskCallback, 50, LV_TASK_PRIO_MID, this);
}

SetColors();

if (currentMode == Mode::Off) {
brightnessController.Set(Controllers::BrightnessController::Levels::Low);
} else if (currentMode != Mode::Strobe) {
brightnessController.Set(brightnessLevel);
}
}

bool FlashLight::OnTouchEvent(Pinetime::Applications::TouchEvents event) {
using namespace Pinetime::Controllers;

if (currentMode == Mode::Off || currentMode == Mode::Strobe) {
return false;
}

auto SetState = [this]() {
if (isOn) {
brightnessController.Set(brightnessLevel);
}
brightnessController.Set(brightnessLevel);
SetIndicators();
SetColors();
};

if (event == TouchEvents::SwipeLeft) {
Expand All @@ -127,3 +169,21 @@ bool FlashLight::OnTouchEvent(Pinetime::Applications::TouchEvents event) {

return false;
}

void FlashLight::Refresh() {
if (currentMode == Mode::Strobe) {
static bool strobeOn = false;
strobeOn = !strobeOn;

// Toggle backlight brightness to flash light at the hardware level
if (strobeOn) {
brightnessController.Set(Controllers::BrightnessController::Levels::High);
} else {
brightnessController.Set(Controllers::BrightnessController::Levels::Off);
}

// Set next callback time based on current state
// 100ms on, 400ms off (2Hz, 20% duty cycle)
lv_task_set_period(taskRefresh, strobeOn ? 100 : 400);
}
}
7 changes: 6 additions & 1 deletion src/displayapp/screens/FlashLight.h
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,9 @@ namespace Pinetime {
void Toggle();

private:
enum class Mode : uint8_t { Off = 0, Red = 1, White = 2, Strobe = 3 };

void Refresh() override;
void SetIndicators();
void SetColors();

Expand All @@ -33,7 +36,9 @@ namespace Pinetime {
lv_obj_t* flashLight;
lv_obj_t* backgroundAction;
lv_obj_t* indicators[3];
bool isOn = false;
Mode currentMode = Mode::Off;

lv_task_t* taskRefresh = nullptr;
};
}
}
Expand Down