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#include "widget/woverviewlmh.h"
#include <QPen>
#include <QPainter>
#include <QColor>
#include "util/timer.h"
#include "util/math.h"
#include "waveform/waveform.h"
WOverviewLMH::WOverviewLMH(const char *pGroup,
UserSettingsPointer pConfig, QWidget * parent)
: WOverview(pGroup, pConfig, parent) {
}
bool WOverviewLMH::drawNextPixmapPart() {
ScopedTimer t("WOverviewLMH::drawNextPixmapPart");
//qDebug() << "WOverview::drawNextPixmapPart()";
int currentCompletion;
ConstWaveformPointer pWaveform = getWaveform();
if (!pWaveform) {
return false;
}
const int dataSize = pWaveform->getDataSize();
if (dataSize == 0) {
return false;
}
if (m_waveformSourceImage.isNull()) {
// Waveform pixmap twice the height of the viewport to be scalable
// by total_gain
// We keep full range waveform data to scale it on paint
m_waveformSourceImage = QImage(dataSize / 2, 2 * 255,
QImage::Format_ARGB32_Premultiplied);
m_waveformSourceImage.fill(QColor(0, 0, 0, 0).value());
}
// Always multiple of 2
const int waveformCompletion = pWaveform->getCompletion();
// Test if there is some new to draw (at least of pixel width)
const int completionIncrement = waveformCompletion - m_actualCompletion;
int visiblePixelIncrement = completionIncrement * length() / dataSize;
if (waveformCompletion < (dataSize - 2) &&
(completionIncrement < 2 || visiblePixelIncrement == 0)) {
return false;
}
const int nextCompletion = m_actualCompletion + completionIncrement;
//qDebug() << "WOverview::drawNextPixmapPart() - nextCompletion:"
// << nextCompletion
// << "m_actualCompletion:" << m_actualCompletion
// << "waveformCompletion:" << waveformCompletion
// << "completionIncrement:" << completionIncrement;
QPainter painter(&m_waveformSourceImage);
painter.translate(0.0, static_cast<double>(m_waveformSourceImage.height()) / 2.0);
QColor lowColor = m_signalColors.getLowColor();
QPen lowColorPen(QBrush(lowColor), 1);
QColor midColor = m_signalColors.getMidColor();
QPen midColorPen(QBrush(midColor), 1);
QColor highColor = m_signalColors.getHighColor();
QPen highColorPen(QBrush(highColor), 1);
for (currentCompletion = m_actualCompletion;
currentCompletion < nextCompletion; currentCompletion += 2) {
unsigned char lowNeg = pWaveform->getLow(currentCompletion);
unsigned char lowPos = pWaveform->getLow(currentCompletion+1);
if (lowPos || lowNeg) {
painter.setPen(lowColorPen);
painter.drawLine(QPoint(currentCompletion / 2, -lowNeg),
QPoint(currentCompletion / 2, lowPos));
}
}
for (currentCompletion = m_actualCompletion;
currentCompletion < nextCompletion; currentCompletion += 2) {
painter.setPen(midColorPen);
painter.drawLine(QPoint(currentCompletion / 2,
-pWaveform->getMid(currentCompletion)),
QPoint(currentCompletion / 2,
pWaveform->getMid(currentCompletion+1)));
}
for (currentCompletion = m_actualCompletion;
currentCompletion < nextCompletion; currentCompletion += 2) {
painter.setPen(highColorPen);
painter.drawLine(QPoint(currentCompletion / 2,
-pWaveform->getHigh(currentCompletion)),
QPoint(currentCompletion / 2,
pWaveform->getHigh(currentCompletion+1)));
}
// Evaluate waveform ratio peak
for (currentCompletion = m_actualCompletion;
currentCompletion < nextCompletion; currentCompletion += 2) {
m_waveformPeak = math_max3(
m_waveformPeak,
static_cast<float>(pWaveform->getAll(currentCompletion)),
static_cast<float>(pWaveform->getAll(currentCompletion + 1)));
}
m_actualCompletion = nextCompletion;
m_waveformImageScaled = QImage();
m_diffGain = 0;
// Test if the complete waveform is done
if (m_actualCompletion >= dataSize - 2) {
m_pixmapDone = true;
//qDebug() << "m_waveformPeakRatio" << m_waveformPeak;
}
return true;
}
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