firmware/src/graphics/draw/ClockRenderer.cpp

#include "configuration.h"
#if HAS_SCREEN
#include "ClockRenderer.h"
#include "NodeDB.h"
#include "UIRenderer.h"
#include "configuration.h"
#include "gps/GeoCoord.h"
#include "gps/RTC.h"
#include "graphics/ScreenFonts.h"
#include "graphics/SharedUIDisplay.h"
#include "graphics/emotes.h"
#include "graphics/images.h"
#include "main.h"

#if !MESHTASTIC_EXCLUDE_BLUETOOTH
#include "nimble/NimbleBluetooth.h"
#endif

namespace graphics
{

namespace ClockRenderer
{
bool digitalWatchFace = true;

void drawSegmentedDisplayColon(OLEDDisplay *display, int x, int y, float scale)
{
    uint16_t segmentWidth = SEGMENT_WIDTH * scale;
    uint16_t segmentHeight = SEGMENT_HEIGHT * scale;

    uint16_t cellHeight = (segmentWidth * 2) + (segmentHeight * 3) + 8;

    uint16_t topAndBottomX = x + (4 * scale);

    uint16_t quarterCellHeight = cellHeight / 4;

    uint16_t topY = y + quarterCellHeight;
    uint16_t bottomY = y + (quarterCellHeight * 3);

    display->fillRect(topAndBottomX, topY, segmentHeight, segmentHeight);
    display->fillRect(topAndBottomX, bottomY, segmentHeight, segmentHeight);
}

void drawSegmentedDisplayCharacter(OLEDDisplay *display, int x, int y, uint8_t number, float scale)
{
    // the numbers 0-9, each expressed as an array of seven boolean (0|1) values encoding the on/off state of
    // segment {innerIndex + 1}
    // e.g., to display the numeral '0', segments 1-6 are on, and segment 7 is off.
    uint8_t numbers[10][7] = {
        {1, 1, 1, 1, 1, 1, 0}, // 0          Display segment key
        {0, 1, 1, 0, 0, 0, 0}, // 1                   1
        {1, 1, 0, 1, 1, 0, 1}, // 2                  ___
        {1, 1, 1, 1, 0, 0, 1}, // 3              6  |   | 2
        {0, 1, 1, 0, 0, 1, 1}, // 4                 |_7̲_|
        {1, 0, 1, 1, 0, 1, 1}, // 5              5  |   | 3
        {1, 0, 1, 1, 1, 1, 1}, // 6                 |___|
        {1, 1, 1, 0, 0, 1, 0}, // 7
        {1, 1, 1, 1, 1, 1, 1}, // 8                   4
        {1, 1, 1, 1, 0, 1, 1}, // 9
    };

    // the width and height of each segment's central rectangle:
    //             _____________________
    //           ⋰|  (only this part,  |⋱
    //         ⋰  |   not including    |  ⋱
    //         ⋱  |   the triangles    |  ⋰
    //           ⋱|    on the ends)    |⋰
    //             ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾

    uint16_t segmentWidth = SEGMENT_WIDTH * scale;
    uint16_t segmentHeight = SEGMENT_HEIGHT * scale;

    // segment x and y coordinates
    uint16_t segmentOneX = x + segmentHeight + 2;
    uint16_t segmentOneY = y;

    uint16_t segmentTwoX = segmentOneX + segmentWidth + 2;
    uint16_t segmentTwoY = segmentOneY + segmentHeight + 2;

    uint16_t segmentThreeX = segmentTwoX;
    uint16_t segmentThreeY = segmentTwoY + segmentWidth + 2 + segmentHeight + 2;

    uint16_t segmentFourX = segmentOneX;
    uint16_t segmentFourY = segmentThreeY + segmentWidth + 2;

    uint16_t segmentFiveX = x;
    uint16_t segmentFiveY = segmentThreeY;

    uint16_t segmentSixX = x;
    uint16_t segmentSixY = segmentTwoY;

    uint16_t segmentSevenX = segmentOneX;
    uint16_t segmentSevenY = segmentTwoY + segmentWidth + 2;

    if (numbers[number][0]) {
        graphics::ClockRenderer::drawHorizontalSegment(display, segmentOneX, segmentOneY, segmentWidth, segmentHeight);
    }

    if (numbers[number][1]) {
        graphics::ClockRenderer::drawVerticalSegment(display, segmentTwoX, segmentTwoY, segmentWidth, segmentHeight);
    }

    if (numbers[number][2]) {
        graphics::ClockRenderer::drawVerticalSegment(display, segmentThreeX, segmentThreeY, segmentWidth, segmentHeight);
    }

    if (numbers[number][3]) {
        graphics::ClockRenderer::drawHorizontalSegment(display, segmentFourX, segmentFourY, segmentWidth, segmentHeight);
    }

    if (numbers[number][4]) {
        graphics::ClockRenderer::drawVerticalSegment(display, segmentFiveX, segmentFiveY, segmentWidth, segmentHeight);
    }

    if (numbers[number][5]) {
        graphics::ClockRenderer::drawVerticalSegment(display, segmentSixX, segmentSixY, segmentWidth, segmentHeight);
    }

    if (numbers[number][6]) {
        graphics::ClockRenderer::drawHorizontalSegment(display, segmentSevenX, segmentSevenY, segmentWidth, segmentHeight);
    }
}

void drawHorizontalSegment(OLEDDisplay *display, int x, int y, int width, int height)
{
    int halfHeight = height / 2;

    // draw central rectangle
    display->fillRect(x, y, width, height);

    // draw end triangles
    display->fillTriangle(x, y, x, y + height - 1, x - halfHeight, y + halfHeight);

    display->fillTriangle(x + width, y, x + width + halfHeight, y + halfHeight, x + width, y + height - 1);
}

void drawVerticalSegment(OLEDDisplay *display, int x, int y, int width, int height)
{
    int halfHeight = height / 2;

    // draw central rectangle
    display->fillRect(x, y, height, width);

    // draw end triangles
    display->fillTriangle(x + halfHeight, y - halfHeight, x + height - 1, y, x, y);

    display->fillTriangle(x, y + width, x + height - 1, y + width, x + halfHeight, y + width + halfHeight);
}

/*
void drawWatchFaceToggleButton(OLEDDisplay *display, int16_t x, int16_t y, bool digitalMode, float scale)
{
    uint16_t segmentWidth = SEGMENT_WIDTH * scale;
    uint16_t segmentHeight = SEGMENT_HEIGHT * scale;

    if (digitalMode) {
        uint16_t radius = (segmentWidth + (segmentHeight * 2) + 4) / 2;
        uint16_t centerX = (x + segmentHeight + 2) + (radius / 2);
        uint16_t centerY = (y + segmentHeight + 2) + (radius / 2);

        display->drawCircle(centerX, centerY, radius);
        display->drawCircle(centerX, centerY, radius + 1);
        display->drawLine(centerX, centerY, centerX, centerY - radius + 3);
        display->drawLine(centerX, centerY, centerX + radius - 3, centerY);
    } else {
        uint16_t segmentOneX = x + segmentHeight + 2;
        uint16_t segmentOneY = y;

        uint16_t segmentTwoX = segmentOneX + segmentWidth + 2;
        uint16_t segmentTwoY = segmentOneY + segmentHeight + 2;

        uint16_t segmentThreeX = segmentOneX;
        uint16_t segmentThreeY = segmentTwoY + segmentWidth + 2;

        uint16_t segmentFourX = x;
        uint16_t segmentFourY = y + segmentHeight + 2;

        drawHorizontalSegment(display, segmentOneX, segmentOneY, segmentWidth, segmentHeight);
        drawVerticalSegment(display, segmentTwoX, segmentTwoY, segmentWidth, segmentHeight);
        drawHorizontalSegment(display, segmentThreeX, segmentThreeY, segmentWidth, segmentHeight);
        drawVerticalSegment(display, segmentFourX, segmentFourY, segmentWidth, segmentHeight);
    }
}
*/
// Draw a digital clock
void drawDigitalClockFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)
{
    display->clear();
    display->setTextAlignment(TEXT_ALIGN_LEFT);
    int line = 1;
    // === Set Title, Blank for Clock
    const char *titleStr = "";
    // === Header ===
    graphics::drawCommonHeader(display, x, y, titleStr, true);

#ifdef T_WATCH_S3
    if (nimbleBluetooth && nimbleBluetooth->isConnected()) {
        graphics::ClockRenderer::drawBluetoothConnectedIcon(display, display->getWidth() - 18, display->getHeight() - 14);
    }
#endif

    uint32_t rtc_sec = getValidTime(RTCQuality::RTCQualityDevice, true); // Display local timezone
    char timeString[16];
    int hour = 0;
    int minute = 0;
    int second = 0;
    if (rtc_sec > 0) {
        long hms = rtc_sec % SEC_PER_DAY;
        hms = (hms + SEC_PER_DAY) % SEC_PER_DAY;

        hour = hms / SEC_PER_HOUR;
        minute = (hms % SEC_PER_HOUR) / SEC_PER_MIN;
        second = (hms % SEC_PER_HOUR) % SEC_PER_MIN; // or hms % SEC_PER_MIN
    }

    bool isPM = hour >= 12;
    // hour = hour > 12 ? hour - 12 : hour;
    if (config.display.use_12h_clock) {
        hour %= 12;
        if (hour == 0)
            hour = 12;
        bool isPM = hour >= 12;
        snprintf(timeString, sizeof(timeString), "%d:%02d", hour, minute);
    } else {
        snprintf(timeString, sizeof(timeString), "%02d:%02d", hour, minute);
    }

    // Format seconds string
    char secondString[8];
    snprintf(secondString, sizeof(secondString), "%02d", second);

#ifdef T_WATCH_S3
    float scale = 1.5;
#else
    float scale = 0.75;
    if (isHighResolution) {
        scale = 1.5;
    }
#endif

    uint16_t segmentWidth = SEGMENT_WIDTH * scale;
    uint16_t segmentHeight = SEGMENT_HEIGHT * scale;

    // calculate hours:minutes string width
    uint16_t timeStringWidth = strlen(timeString) * 5;

    for (uint8_t i = 0; i < strlen(timeString); i++) {
        char character = timeString[i];

        if (character == ':') {
            timeStringWidth += segmentHeight;
        } else {
            timeStringWidth += segmentWidth + (segmentHeight * 2) + 4;
        }
    }

    uint16_t hourMinuteTextX = (display->getWidth() / 2) - (timeStringWidth / 2);

    uint16_t startingHourMinuteTextX = hourMinuteTextX;

    uint16_t hourMinuteTextY = (display->getHeight() / 2) - (((segmentWidth * 2) + (segmentHeight * 3) + 8) / 2);

    // iterate over characters in hours:minutes string and draw segmented characters
    for (uint8_t i = 0; i < strlen(timeString); i++) {
        char character = timeString[i];

        if (character == ':') {
            drawSegmentedDisplayColon(display, hourMinuteTextX, hourMinuteTextY, scale);

            hourMinuteTextX += segmentHeight + 6;
        } else {
            drawSegmentedDisplayCharacter(display, hourMinuteTextX, hourMinuteTextY, character - '0', scale);

            hourMinuteTextX += segmentWidth + (segmentHeight * 2) + 4;
        }

        hourMinuteTextX += 5;
    }

    // draw seconds string
    display->setFont(FONT_SMALL);
    int xOffset = (isHighResolution) ? 0 : -1;
    if (hour >= 10) {
        xOffset += (isHighResolution) ? 32 : 18;
    }
    int yOffset = (isHighResolution) ? 3 : 1;
    if (config.display.use_12h_clock) {
        display->drawString(startingHourMinuteTextX + xOffset, (display->getHeight() - hourMinuteTextY) - yOffset - 2,
                            isPM ? "pm" : "am");
    }
#ifndef USE_EINK
    xOffset = (isHighResolution) ? 18 : 10;
    display->drawString(startingHourMinuteTextX + timeStringWidth - xOffset, (display->getHeight() - hourMinuteTextY) - yOffset,
                        secondString);
#endif
}

void drawBluetoothConnectedIcon(OLEDDisplay *display, int16_t x, int16_t y)
{
    display->drawFastImage(x, y, 18, 14, bluetoothConnectedIcon);
}

// Draw an analog clock
void drawAnalogClockFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)
{
    display->setTextAlignment(TEXT_ALIGN_LEFT);
    // === Set Title, Blank for Clock
    const char *titleStr = "";
    // === Header ===
    graphics::drawCommonHeader(display, x, y, titleStr, true);

#ifdef T_WATCH_S3
    if (nimbleBluetooth && nimbleBluetooth->isConnected()) {
        drawBluetoothConnectedIcon(display, display->getWidth() - 18, display->getHeight() - 14);
    }
#endif
    // clock face center coordinates
    int16_t centerX = display->getWidth() / 2;
    int16_t centerY = display->getHeight() / 2;

    // clock face radius
    int16_t radius = 0;
    if (display->getHeight() < display->getWidth()) {
        radius = (display->getHeight() / 2) * 0.9;
    } else {
        radius = (display->getWidth() / 2) * 0.9;
    }
#ifdef T_WATCH_S3
    radius = (display->getWidth() / 2) * 0.8;
#endif

    // noon (0 deg) coordinates (outermost circle)
    int16_t noonX = centerX;
    int16_t noonY = centerY - radius;

    // second hand radius and y coordinate (outermost circle)
    int16_t secondHandNoonY = noonY + 1;

    // tick mark outer y coordinate; (first nested circle)
    int16_t tickMarkOuterNoonY = secondHandNoonY;

    // seconds tick mark inner y coordinate; (second nested circle)
    double secondsTickMarkInnerNoonY = (double)noonY + 4;
    if (isHighResolution) {
        secondsTickMarkInnerNoonY = (double)noonY + 8;
    }

    // hours tick mark inner y coordinate; (third nested circle)
    double hoursTickMarkInnerNoonY = (double)noonY + 6;
    if (isHighResolution) {
        hoursTickMarkInnerNoonY = (double)noonY + 16;
    }

    // minute hand y coordinate
    int16_t minuteHandNoonY = secondsTickMarkInnerNoonY + 4;

    // hour string y coordinate
    int16_t hourStringNoonY = minuteHandNoonY + 18;

    // hour hand radius and y coordinate
    int16_t hourHandRadius = radius * 0.35;
    if (isHighResolution) {
        int16_t hourHandRadius = radius * 0.55;
    }
    int16_t hourHandNoonY = centerY - hourHandRadius;

    display->setColor(OLEDDISPLAY_COLOR::WHITE);
    display->drawCircle(centerX, centerY, radius);

    uint32_t rtc_sec = getValidTime(RTCQuality::RTCQualityDevice, true); // Display local timezone
    if (rtc_sec > 0) {
        long hms = rtc_sec % SEC_PER_DAY;
        hms = (hms + SEC_PER_DAY) % SEC_PER_DAY;

        // Tear apart hms into h:m:s
        int hour = hms / SEC_PER_HOUR;
        int minute = (hms % SEC_PER_HOUR) / SEC_PER_MIN;
        int second = (hms % SEC_PER_HOUR) % SEC_PER_MIN; // or hms % SEC_PER_MIN

        bool isPM = hour >= 12;
        if (config.display.use_12h_clock) {
            bool isPM = hour >= 12;
            display->setFont(FONT_SMALL);
            int yOffset = isHighResolution ? 1 : 0;
#ifdef USE_EINK
            yOffset += 3;
#endif
            display->drawString(centerX - (display->getStringWidth(isPM ? "pm" : "am") / 2), centerY + yOffset,
                                isPM ? "pm" : "am");
        }
        hour %= 12;
        if (hour == 0)
            hour = 12;

        int16_t degreesPerHour = 30;
        int16_t degreesPerMinuteOrSecond = 6;

        double hourBaseAngle = hour * degreesPerHour;
        double hourAngleOffset = ((double)minute / 60) * degreesPerHour;
        double hourAngle = radians(hourBaseAngle + hourAngleOffset);

        double minuteBaseAngle = minute * degreesPerMinuteOrSecond;
        double minuteAngleOffset = ((double)second / 60) * degreesPerMinuteOrSecond;
        double minuteAngle = radians(minuteBaseAngle + minuteAngleOffset);

        double secondAngle = radians(second * degreesPerMinuteOrSecond);

        double hourX = sin(-hourAngle) * (hourHandNoonY - centerY) + noonX;
        double hourY = cos(-hourAngle) * (hourHandNoonY - centerY) + centerY;

        double minuteX = sin(-minuteAngle) * (minuteHandNoonY - centerY) + noonX;
        double minuteY = cos(-minuteAngle) * (minuteHandNoonY - centerY) + centerY;

        double secondX = sin(-secondAngle) * (secondHandNoonY - centerY) + noonX;
        double secondY = cos(-secondAngle) * (secondHandNoonY - centerY) + centerY;

        display->setFont(FONT_MEDIUM);

        // draw minute and hour tick marks and hour numbers
        for (uint16_t angle = 0; angle < 360; angle += 6) {
            double angleInRadians = radians(angle);

            double sineAngleInRadians = sin(-angleInRadians);
            double cosineAngleInRadians = cos(-angleInRadians);

            double endX = sineAngleInRadians * (tickMarkOuterNoonY - centerY) + noonX;
            double endY = cosineAngleInRadians * (tickMarkOuterNoonY - centerY) + centerY;

            if (angle % degreesPerHour == 0) {
                double startX = sineAngleInRadians * (hoursTickMarkInnerNoonY - centerY) + noonX;
                double startY = cosineAngleInRadians * (hoursTickMarkInnerNoonY - centerY) + centerY;

                // draw hour tick mark
                display->drawLine(startX, startY, endX, endY);

                static char buffer[2];

                uint8_t hourInt = (angle / 30);

                if (hourInt == 0) {
                    hourInt = 12;
                }

                // hour number x offset needs to be adjusted for some cases
                int8_t hourStringXOffset;
                int8_t hourStringYOffset = 13;

                switch (hourInt) {
                case 3:
                    hourStringXOffset = 5;
                    break;
                case 9:
                    hourStringXOffset = 7;
                    break;
                case 10:
                case 11:
                    hourStringXOffset = 8;
                    break;
                case 12:
                    hourStringXOffset = 13;
                    break;
                default:
                    hourStringXOffset = 6;
                    break;
                }

                double hourStringX = (sineAngleInRadians * (hourStringNoonY - centerY) + noonX) - hourStringXOffset;
                double hourStringY = (cosineAngleInRadians * (hourStringNoonY - centerY) + centerY) - hourStringYOffset;

#ifdef T_WATCH_S3
                // draw hour number
                display->drawStringf(hourStringX, hourStringY, buffer, "%d", hourInt);
#else
#ifdef USE_EINK
                if (isHighResolution) {
                    // draw hour number
                    display->drawStringf(hourStringX, hourStringY, buffer, "%d", hourInt);
                }
#else
                if (isHighResolution && (hourInt == 3 || hourInt == 6 || hourInt == 9 || hourInt == 12)) {
                    // draw hour number
                    display->drawStringf(hourStringX, hourStringY, buffer, "%d", hourInt);
                }
#endif
#endif
            }

            if (angle % degreesPerMinuteOrSecond == 0) {
                double startX = sineAngleInRadians * (secondsTickMarkInnerNoonY - centerY) + noonX;
                double startY = cosineAngleInRadians * (secondsTickMarkInnerNoonY - centerY) + centerY;

                if (isHighResolution) {
                    // draw minute tick mark
                    display->drawLine(startX, startY, endX, endY);
                }
            }
        }

        // draw hour hand
        display->drawLine(centerX, centerY, hourX, hourY);

        // draw minute hand
        display->drawLine(centerX, centerY, minuteX, minuteY);
#ifndef USE_EINK
        // draw second hand
        display->drawLine(centerX, centerY, secondX, secondY);
#endif
    }
}

} // namespace ClockRenderer

} // namespace graphics
#endif