void PlotterIcon::inputData(quint64 value)
{
log[cursor] = value;
cursor += 1;
if(cursor >= getLogSize())
cursor -= getLogSize();
}
//---------------------------------------------------------------------------------
String
MavESP8266Log::getLog(uint32_t position) {
String buffer;
#if 0
//-- TODO
uint32_t len = getLogSize();
if (position < _log_posistion) {
position = 0;
} else if (position >= _log_posistion + len) {
position = len;
} else {
position = position - _log_posistion;
}
int r = (_log_read + position) % _buffer_size;
while (r != _log_write) {
uint8_t c = _buffer[r];
if (c == '\\' || c == '"') {
buffer += '\\';
buffer += c;
} else if (c < ' ') {
char tmp[12];
snprintf(tmp, 12, "\\u%04x", c);
buffer += tmp;
} else {
buffer += c;
}
r = (r + 1) % _buffer_size;
}
#endif
return buffer;
}
//---------------------------------------------------------------------------------
String
MavESP8266Log::getLog(uint32_t* pStart, uint32_t* pLen) {
String buffer;
uint32_t position = *pStart, len = getLogSize();
if (position < _log_position - len) { //-- Can't read data that was overriden
position = _log_position - len;
} else if (position > _log_position) { //-- Can't read data from the future
position = _log_position;
}
len = _log_position - position;
*pStart = position;
*pLen = len;
uint32_t r = (_log_offset + (_buffer_size - len)) % _buffer_size;
while(len > 0) {
char c = _buffer[r];
//-- Copy as JSON encoded characters
if (c == '\\' || c == '"') {
buffer += '\\';
buffer += c;
} else if (c < ' ') {
char tmp[12];
snprintf(tmp, 12, "\\u%04x", c);
buffer += tmp;
} else {
buffer += c;
}
r = (r + 1) % _buffer_size;
len--;
}
return buffer;
}
void PlotterIcon::redraw()
{
QPixmap pm(22,22);
pm.fill(config->getBackgroundColor());
QPainter painter(&pm);
// Grid
painter.setPen(config->getGridColor());
for (int i = 0; i < 22; i+= config->getGridDensity())
painter.drawLine(0, 22 - i, 21, 22 - i);
// Graph
painter.setPen(config->getColor());
int startPosition = cursor + 1;
if (startPosition >= getLogSize())
startPosition -= getLogSize();
int i = startPosition;
int graphPosition = 0;
do
{
int barWidth = round((double)log[i] / (double)config->getScale() * 21 + 1);
painter.drawLine(graphPosition, 22, graphPosition, 22 - barWidth);
graphPosition++;
i++;
if (i >= getLogSize())
i -= getLogSize();
} while(i != startPosition);
// Label
painter.setPen(config->getTextColor());
painter.setFont(QFont(config->getFontFamily(), config->getFontSize()));
painter.drawText(QRect(0,0,22,22), config->getLabel(), QTextOption(Qt::AlignLeft | Qt::AlignTop));
setIcon(QIcon(pm));
}
