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InfiniTime/src/displayapp/screens/StopWatch.h
Peetz0r b221cc1731 Stopwatch: improve variable naming
msec => hundredths
2021-04-17 23:47:53 +02:00

86 lines
2 KiB
C++

#pragma once
#include "Screen.h"
#include "components/datetime/DateTimeController.h"
#include "../LittleVgl.h"
#include "FreeRTOS.h"
#include "portmacro_cmsis.h"
#include <array>
namespace Pinetime::Applications::Screens {
enum class States { Init, Running, Halted };
enum class Events { Play, Pause, Stop };
struct TimeSeparated_t {
int mins;
int secs;
int hundredths;
};
// A simple buffer to hold the latest two laps
template <int N> struct LapTextBuffer_t {
LapTextBuffer_t() : buffer {}, currentSize {}, capacity {N}, head {-1} {
}
void addLaps(const TimeSeparated_t& timeVal) {
head++;
head %= capacity;
buffer[head] = timeVal;
if (currentSize < capacity) {
currentSize++;
}
}
void clearBuffer() {
buffer = {};
currentSize = 0;
head = -1;
}
TimeSeparated_t* operator[](std::size_t idx) {
// Sanity check for out-of-bounds
if (idx >= 0 && idx < capacity) {
if (idx < currentSize) {
// This transformation is to ensure that head is always pointing to index 0.
const auto transformed_idx = (head - idx) % capacity;
return (&buffer[transformed_idx]);
}
}
return nullptr;
}
private:
std::array<TimeSeparated_t, N> buffer;
uint8_t currentSize;
uint8_t capacity;
int8_t head;
};
class StopWatch : public Screen {
public:
StopWatch(DisplayApp* app);
~StopWatch() override;
bool Refresh() override;
void playPauseBtnEventHandler(lv_event_t event);
void stopLapBtnEventHandler(lv_event_t event);
private:
bool running;
States currentState;
Events currentEvent;
TickType_t startTime;
TickType_t oldTimeElapsed;
TimeSeparated_t currentTimeSeparated; // Holds Mins, Secs, millisecs
LapTextBuffer_t<2> lapBuffer;
int lapNr;
bool lapPressed;
lv_obj_t *time, *msecTime, *btnPlayPause, *btnStopLap, *txtPlayPause, *txtStopLap;
lv_obj_t *lapOneText, *lapTwoText;
};
}