tactility/Tactility/Source/settings/DisplaySettings.cpp

#include <Tactility/settings/DisplaySettings.h>

#include <Tactility/file/File.h>
#include <Tactility/file/PropertiesFile.h>
#include <Tactility/Paths.h>
#include <tactility/hal/Device.h>
#include <Tactility/hal/display/DisplayDevice.h>

#include <map>
#include <string>
#include <utility>

namespace tt::settings::display {

static std::string getSettingsFilePath() {
    return getUserDataPath() + "/settings/display.properties";
}

constexpr auto* SETTINGS_KEY_ORIENTATION = "orientation";
constexpr auto* SETTINGS_KEY_GAMMA_CURVE = "gammaCurve";
constexpr auto* SETTINGS_KEY_BACKLIGHT_DUTY = "backlightDuty";
constexpr auto* SETTINGS_KEY_TIMEOUT_ENABLED = "backlightTimeoutEnabled";
constexpr auto* SETTINGS_KEY_TIMEOUT_MS = "backlightTimeoutMs";
constexpr auto* SETTINGS_KEY_SCREENSAVER_TYPE = "screensaverType";
constexpr auto* SETTINGS_KEY_DISABLE_WHEN_CHARGING = "disableScreensaverWhenCharging";

static Orientation getDefaultOrientation() {
    auto* display = lv_display_get_default();
    if (display == nullptr) {
        return Orientation::Landscape;
    }
    if (lv_display_get_physical_horizontal_resolution(display) > lv_display_get_physical_vertical_resolution(display)) {
        return Orientation::Landscape;
    } else {
        return Orientation::Portrait;
    }
}

static std::string toString(Orientation orientation) {
    switch (orientation) {
        using enum Orientation;
        case Portrait: return "Portrait";
        case Landscape: return "Landscape";
        case PortraitFlipped: return "PortraitFlipped";
        case LandscapeFlipped: return "LandscapeFlipped";
        default: std::unreachable();
    }
}

static bool fromString(const std::string& str, Orientation& orientation) {
    if (str == "Portrait") { orientation = Orientation::Portrait; return true; }
    else if (str == "Landscape") { orientation = Orientation::Landscape; return true; }
    else if (str == "PortraitFlipped") { orientation = Orientation::PortraitFlipped; return true; }
    else if (str == "LandscapeFlipped") { orientation = Orientation::LandscapeFlipped; return true; }
    else { return false; }
}

static std::string toString(ScreensaverType type) {
    switch (type) {
        using enum ScreensaverType;
        case None: return "None";
        case BouncingBalls: return "BouncingBalls";
        case Mystify: return "Mystify";
        case MatrixRain: return "MatrixRain";
        case StackChan: return "StackChan";
        default: std::unreachable();
    }
}

static bool fromString(const std::string& str, ScreensaverType& type) {
    if (str == "None") { type = ScreensaverType::None; return true; }
    else if (str == "BouncingBalls") { type = ScreensaverType::BouncingBalls; return true; }
    else if (str == "Mystify") { type = ScreensaverType::Mystify; return true; }
    else if (str == "MatrixRain") { type = ScreensaverType::MatrixRain; return true; }
    else if (str == "StackChan") { type = ScreensaverType::StackChan; return true; }
    else { return false; }
}

bool load(DisplaySettings& settings) {
    auto settings_path = getSettingsFilePath();
    if (!file::isFile(settings_path)) { return false; }
    std::map<std::string, std::string> map;
    if (!file::loadPropertiesFile(settings_path, map)) { return false; }

    auto orientation_entry = map.find(SETTINGS_KEY_ORIENTATION);
    Orientation orientation;
    if (orientation_entry == map.end() || !fromString(orientation_entry->second, orientation)) {
        orientation = getDefaultOrientation();
    }

    auto gamma_entry = map.find(SETTINGS_KEY_GAMMA_CURVE);
    int gamma_curve = 0;
    if (gamma_entry != map.end()) { gamma_curve = atoi(gamma_entry->second.c_str()); }

    auto backlight_duty_entry = map.find(SETTINGS_KEY_BACKLIGHT_DUTY);
    int backlight_duty = 200;
    if (backlight_duty_entry != map.end()) {
        backlight_duty = atoi(backlight_duty_entry->second.c_str());
        if (backlight_duty_entry->second != "0" && backlight_duty == 0) backlight_duty = 200;
    }

    bool timeout_enabled = false;
    auto timeout_enabled_entry = map.find(SETTINGS_KEY_TIMEOUT_ENABLED);
    if (timeout_enabled_entry != map.end()) {
        timeout_enabled = (timeout_enabled_entry->second == "1" || timeout_enabled_entry->second == "true" || timeout_enabled_entry->second == "True");
    }

    uint32_t timeout_ms = 60000;
    auto timeout_ms_entry = map.find(SETTINGS_KEY_TIMEOUT_MS);
    if (timeout_ms_entry != map.end()) {
        timeout_ms = static_cast<uint32_t>(std::strtoul(timeout_ms_entry->second.c_str(), nullptr, 10));
    }

    auto screensaver_entry = map.find(SETTINGS_KEY_SCREENSAVER_TYPE);
    ScreensaverType screensaver_type = ScreensaverType::BouncingBalls;
    if (screensaver_entry != map.end()) { fromString(screensaver_entry->second, screensaver_type); }

    bool disable_when_charging = false;
    auto charging_entry = map.find(SETTINGS_KEY_DISABLE_WHEN_CHARGING);
    if (charging_entry != map.end()) {
        disable_when_charging = (charging_entry->second == "1" || charging_entry->second == "true");
    }

    settings.orientation = orientation;
    settings.gammaCurve = gamma_curve;
    settings.backlightDuty = backlight_duty;
    settings.backlightTimeoutEnabled = timeout_enabled;
    settings.backlightTimeoutMs = timeout_ms;
    settings.screensaverType = screensaver_type;
    settings.disableScreensaverWhenCharging = disable_when_charging;
    return true;
}

DisplaySettings getDefault() {
    return DisplaySettings {
        .orientation = getDefaultOrientation(),
        .gammaCurve = 1,
        .backlightDuty = 200,
        .backlightTimeoutEnabled = false,
        .backlightTimeoutMs = 60000,
        .screensaverType = ScreensaverType::BouncingBalls,
        .disableScreensaverWhenCharging = false
    };
}

DisplaySettings loadOrGetDefault() {
    DisplaySettings settings;
    if (!load(settings)) { settings = getDefault(); }
    return settings;
}

bool save(const DisplaySettings& settings) {
    std::map<std::string, std::string> map;
    map[SETTINGS_KEY_BACKLIGHT_DUTY] = std::to_string(settings.backlightDuty);
    map[SETTINGS_KEY_GAMMA_CURVE] = std::to_string(settings.gammaCurve);
    map[SETTINGS_KEY_ORIENTATION] = toString(settings.orientation);
    map[SETTINGS_KEY_TIMEOUT_ENABLED] = settings.backlightTimeoutEnabled ? "1" : "0";
    map[SETTINGS_KEY_TIMEOUT_MS] = std::to_string(settings.backlightTimeoutMs);
    map[SETTINGS_KEY_SCREENSAVER_TYPE] = toString(settings.screensaverType);
    map[SETTINGS_KEY_DISABLE_WHEN_CHARGING] = settings.disableScreensaverWhenCharging ? "1" : "0";
    auto settings_path = getSettingsFilePath();
    if (!file::findOrCreateParentDirectory(settings_path, 0755)) { return false; }
    return file::savePropertiesFile(settings_path, map);
}

lv_display_rotation_t toLvglDisplayRotation(Orientation orientation) {
    auto* lvgl_display = lv_display_get_default();
    auto rotation = lv_display_get_rotation(lvgl_display);
    bool is_originally_landscape;
    if (rotation == LV_DISPLAY_ROTATION_0 || rotation == LV_DISPLAY_ROTATION_180) {
        is_originally_landscape = lv_display_get_physical_horizontal_resolution(lvgl_display) > lv_display_get_physical_vertical_resolution(lvgl_display);
    } else {
        is_originally_landscape = lv_display_get_physical_horizontal_resolution(lvgl_display) < lv_display_get_physical_vertical_resolution(lvgl_display);
    }
    if (is_originally_landscape) {
        switch (orientation) {
            case Orientation::Landscape: return LV_DISPLAY_ROTATION_0;
            case Orientation::Portrait: return LV_DISPLAY_ROTATION_90;
            case Orientation::LandscapeFlipped: return LV_DISPLAY_ROTATION_180;
            case Orientation::PortraitFlipped: return LV_DISPLAY_ROTATION_270;
            default: return LV_DISPLAY_ROTATION_0;
        }
    } else {
        switch (orientation) {
            case Orientation::Landscape: return LV_DISPLAY_ROTATION_90;
            case Orientation::Portrait: return LV_DISPLAY_ROTATION_0;
            case Orientation::LandscapeFlipped: return LV_DISPLAY_ROTATION_270;
            case Orientation::PortraitFlipped: return LV_DISPLAY_ROTATION_180;
            default: return LV_DISPLAY_ROTATION_0;
        }
    }
}

} // namespace