InfiniTime/src/displayapp/screens/StopWatch.cpp

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#include "StopWatch.h"
#include "Screen.h"
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#include "Symbols.h"
#include "lvgl/lvgl.h"
#include "projdefs.h"
#include "FreeRTOSConfig.h"
#include "task.h"
#include <tuple>
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using namespace Pinetime::Applications::Screens;
// Anonymous namespace for local functions
namespace {
TimeSeparated_t convertTicksToTimeSegments(const TickType_t timeElapsed) {
const int timeElapsedMillis = (static_cast<float>(timeElapsed) / static_cast<float>(configTICK_RATE_HZ)) * 1000;
const int hundredths = (timeElapsedMillis % 1000) / 10; // Get only the first two digits and ignore the last
const int secs = (timeElapsedMillis / 1000) % 60;
const int mins = (timeElapsedMillis / 1000) / 60;
return TimeSeparated_t {mins, secs, hundredths};
}
TickType_t calculateDelta(const TickType_t startTime, const TickType_t currentTime) {
TickType_t delta = 0;
// Take care of overflow
if (startTime > currentTime) {
delta = 0xffffffff - startTime;
delta += (currentTime + 1);
} else {
delta = currentTime - startTime;
}
return delta;
}
}
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static void play_pause_event_handler(lv_obj_t* obj, lv_event_t event) {
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auto stopWatch = static_cast<StopWatch*>(obj->user_data);
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stopWatch->playPauseBtnEventHandler(event);
}
static void stop_lap_event_handler(lv_obj_t* obj, lv_event_t event) {
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auto stopWatch = static_cast<StopWatch*>(obj->user_data);
stopWatch->stopLapBtnEventHandler(event);
}
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StopWatch::StopWatch(DisplayApp* app)
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: Screen(app), running {true}, currentState {States::Init}, currentEvent {Events::Stop}, startTime {}, oldTimeElapsed {},
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currentTimeSeparated {}, lapBuffer {}, lapNr {}, lapPressed {false} {
time = lv_label_create(lv_scr_act(), nullptr);
lv_obj_set_style_local_text_font(time, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, &jetbrains_mono_76);
lv_obj_set_style_local_text_color(time, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_GRAY);
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lv_label_set_text(time, "00:00");
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lv_obj_align(time, lv_scr_act(), LV_ALIGN_IN_LEFT_MID, 0, -45);
msecTime = lv_label_create(lv_scr_act(), nullptr);
//lv_obj_set_style_local_text_font(msecTime, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, &jetbrains_mono_bold_20);
lv_obj_set_style_local_text_color(msecTime, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_GRAY);
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lv_label_set_text(msecTime, "00");
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lv_obj_align(msecTime, lv_scr_act(), LV_ALIGN_IN_LEFT_MID, 108, 3);
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btnPlayPause = lv_btn_create(lv_scr_act(), nullptr);
btnPlayPause->user_data = this;
lv_obj_set_event_cb(btnPlayPause, play_pause_event_handler);
lv_obj_align(btnPlayPause, lv_scr_act(), LV_ALIGN_IN_BOTTOM_MID, 0, -10);
lv_obj_set_height(btnPlayPause, 40);
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txtPlayPause = lv_label_create(btnPlayPause, nullptr);
lv_label_set_text(txtPlayPause, Symbols::play);
lapOneText = lv_label_create(lv_scr_act(), nullptr);
//lv_obj_set_style_local_text_font(lapOneText, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, &jetbrains_mono_bold_20);
lv_obj_set_style_local_text_color(lapOneText, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_YELLOW);
lv_obj_align(lapOneText, lv_scr_act(), LV_ALIGN_IN_LEFT_MID, 50, 30);
lv_label_set_text(lapOneText, "");
lapTwoText = lv_label_create(lv_scr_act(), nullptr);
//lv_obj_set_style_local_text_font(lapTwoText, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, &jetbrains_mono_bold_20);
lv_obj_set_style_local_text_color(lapTwoText, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_YELLOW);
lv_obj_align(lapTwoText, lv_scr_act(), LV_ALIGN_IN_LEFT_MID, 50, 55);
lv_label_set_text(lapTwoText, "");
// We don't want this button in the init state
btnStopLap = nullptr;
}
StopWatch::~StopWatch() {
lv_obj_clean(lv_scr_act());
}
bool StopWatch::Refresh() {
// @startuml CHIP8_state
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// State "Init" as init
// State "Running" as run
// State "Halted" as halt
// [*] --> init
// init -> run : press play
// run -> run : press lap
// run --> halt : press pause
// halt --> run : press play
// halt --> init : press stop
// @enduml
// Copy paste the above plantuml text to visualize the state diagram
switch (currentState) {
// Init state when an user first opens the app
// and when a stop/reset button is pressed
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case States::Init: {
if (btnStopLap) {
lv_obj_del(btnStopLap);
}
// The initial default value
lv_label_set_text(time, "00:00");
lv_label_set_text(msecTime, "00");
lv_label_set_text(lapOneText, "");
lv_label_set_text(lapTwoText, "");
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lapBuffer.clearBuffer();
lapNr = 0;
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if (currentEvent == Events::Play) {
btnStopLap = lv_btn_create(lv_scr_act(), nullptr);
btnStopLap->user_data = this;
lv_obj_set_event_cb(btnStopLap, stop_lap_event_handler);
lv_obj_align(btnStopLap, lv_scr_act(), LV_ALIGN_IN_TOP_MID, 0, 0);
lv_obj_set_height(btnStopLap, 40);
txtStopLap = lv_label_create(btnStopLap, nullptr);
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lv_label_set_text(txtStopLap, Symbols::lapsFlag);
startTime = xTaskGetTickCount();
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currentState = States::Running;
}
break;
}
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case States::Running: {
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lv_label_set_text(txtPlayPause, Symbols::pause);
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lv_label_set_text(txtStopLap, Symbols::lapsFlag);
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const auto timeElapsed = calculateDelta(startTime, xTaskGetTickCount());
currentTimeSeparated = convertTicksToTimeSegments((oldTimeElapsed + timeElapsed));
lv_label_set_text_fmt(time, "%02d:%02d", currentTimeSeparated.mins, currentTimeSeparated.secs);
lv_label_set_text_fmt(msecTime, "%02d", currentTimeSeparated.hundredths);
if (lapPressed == true) {
if (lapBuffer[1]) {
lv_label_set_text_fmt(lapOneText, "#%d %2d:%02d.%02d", (lapNr - 1), lapBuffer[1]->mins, lapBuffer[1]->secs, lapBuffer[1]->hundredths);
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}
if (lapBuffer[0]) {
lv_label_set_text_fmt(lapTwoText, "#%d %2d:%02d.%02d", lapNr, lapBuffer[0]->mins, lapBuffer[0]->secs, lapBuffer[0]->hundredths);
}
// Reset the bool to avoid setting the text in each cycle until there is a change
lapPressed = false;
}
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if (currentEvent == Events::Pause) {
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// Reset the start time
startTime = 0;
// Store the current time elapsed in cache
oldTimeElapsed += timeElapsed;
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currentState = States::Halted;
lv_obj_set_style_local_text_color(time, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_YELLOW);
lv_obj_set_style_local_text_color(msecTime, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_YELLOW);
} else {
lv_obj_set_style_local_text_color(time, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_GREEN);
lv_obj_set_style_local_text_color(msecTime, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_GREEN);
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}
break;
}
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case States::Halted: {
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lv_label_set_text(txtPlayPause, Symbols::play);
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lv_label_set_text(txtStopLap, Symbols::stop);
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if (currentEvent == Events::Play) {
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startTime = xTaskGetTickCount();
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currentState = States::Running;
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}
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if (currentEvent == Events::Stop) {
currentState = States::Init;
oldTimeElapsed = 0;
lv_obj_set_style_local_text_color(time, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_GRAY);
lv_obj_set_style_local_text_color(msecTime, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_GRAY);
}
break;
}
}
return running;
}
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void StopWatch::playPauseBtnEventHandler(lv_event_t event) {
if (event == LV_EVENT_CLICKED) {
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if (currentState == States::Init) {
currentEvent = Events::Play;
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} else {
// Simple Toggle for play/pause
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currentEvent = (currentEvent == Events::Play ? Events::Pause : Events::Play);
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}
}
}
void StopWatch::stopLapBtnEventHandler(lv_event_t event) {
if (event == LV_EVENT_CLICKED) {
// If running, then this button is used to save laps
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if (currentState == States::Running) {
lapBuffer.addLaps(currentTimeSeparated);
lapNr++;
lapPressed = true;
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} else if (currentState == States::Halted) {
currentEvent = Events::Stop;
} else {
// Not possible to reach here. Do nothing.
}
}
}