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#include "waveform/renderers/glwaveformrenderersimplesignal.h"
#if !defined(QT_NO_OPENGL) && !defined(QT_OPENGL_ES_2)
#include "track/track.h"
#include "util/math.h"
#include "waveform/waveform.h"
#include "waveform/waveformwidgetfactory.h"
#include "waveformwidgetrenderer.h"
GLWaveformRendererSimpleSignal::GLWaveformRendererSimpleSignal(
WaveformWidgetRenderer* waveformWidgetRenderer)
: WaveformRendererSignalBase(waveformWidgetRenderer) {
}
GLWaveformRendererSimpleSignal::~GLWaveformRendererSimpleSignal() {
}
void GLWaveformRendererSimpleSignal::onSetup(const QDomNode& node) {
Q_UNUSED(node);
}
inline void setPoint(QPointF& point, qreal x, qreal y) {
point.setX(x);
point.setY(y);
}
void GLWaveformRendererSimpleSignal::draw(QPainter* painter, QPaintEvent* /*event*/) {
maybeInitializeGL();
TrackPointer pTrack = m_waveformRenderer->getTrackInfo();
if (!pTrack) {
return;
}
ConstWaveformPointer waveform = pTrack->getWaveform();
if (waveform.isNull()) {
return;
}
const int dataSize = waveform->getDataSize();
if (dataSize <= 1) {
return;
}
const WaveformData* data = waveform->data();
if (data == NULL) {
return;
}
auto firstVisualIndex = static_cast<GLfloat>(
m_waveformRenderer->getFirstDisplayedPosition() * dataSize);
auto lastVisualIndex = static_cast<GLfloat>(
m_waveformRenderer->getLastDisplayedPosition() * dataSize);
const auto lineWidth = static_cast<GLfloat>(
1.0 / m_waveformRenderer->getVisualSamplePerPixel() + 1);
const auto firstIndex = static_cast<int>(firstVisualIndex + 0.5);
firstVisualIndex = firstIndex - firstIndex%2;
const auto lastIndex = static_cast<int>(lastVisualIndex + 0.5);
lastVisualIndex = lastIndex + lastIndex%2;
// Reset device for native painting
painter->beginNativePainting();
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
float allGain(1.0);
getGains(&allGain, NULL, NULL, NULL);
if (m_alignment == Qt::AlignCenter) {
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
if (m_orientation == Qt::Vertical) {
glRotatef(90.0f, 0.0f, 0.0f, 1.0f);
glScalef(-1.0f, 1.0f, 1.0f);
}
glOrtho(firstVisualIndex, lastVisualIndex, -255.0, 255.0, -10.0, 10.0);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glScalef(1.f, allGain, 1.f);
glLineWidth(1.0);
glDisable(GL_LINE_SMOOTH);
//draw reference line
glBegin(GL_LINES); {
glColor4f(static_cast<GLfloat>(m_axesColor_r),
static_cast<GLfloat>(m_axesColor_g),
static_cast<GLfloat>(m_axesColor_b),
static_cast<GLfloat>(m_axesColor_a));
glVertex2f(firstVisualIndex,0);
glVertex2f(lastVisualIndex,0);
}
glEnd();
glLineWidth(lineWidth);
glEnable(GL_LINE_SMOOTH);
glBegin(GL_LINES); {
int firstIndex = math_max(static_cast<int>(firstVisualIndex), 0);
int lastIndex = math_min(static_cast<int>(lastVisualIndex), dataSize);
glColor4f(static_cast<GLfloat>(m_signalColor_r),
static_cast<GLfloat>(m_signalColor_g),
static_cast<GLfloat>(m_signalColor_b),
0.9f);
for (int visualIndex = firstIndex;
visualIndex < lastIndex;
visualIndex += 2) {
GLfloat maxAll0 = data[visualIndex].filtered.all;
GLfloat maxAll1 = data[visualIndex+1].filtered.all;
glVertex2f(visualIndex, maxAll0);
glVertex2f(visualIndex, -1.f * maxAll1);
}
}
glEnd();
} else { //top || bottom
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
if (m_orientation == Qt::Vertical) {
glRotatef(90.0f, 0.0f, 0.0f, 1.0f);
glScalef(-1.0f, 1.0f, 1.0f);
}
if (m_alignment == Qt::AlignBottom || m_alignment == Qt::AlignRight) {
glOrtho(firstVisualIndex, lastVisualIndex, 0.0, 255.0, -10.0, 10.0);
} else {
glOrtho(firstVisualIndex, lastVisualIndex, 255.0, 0.0, -10.0, 10.0);
}
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glScalef(1.f, allGain, 1.f);
glLineWidth(lineWidth);
glEnable(GL_LINE_SMOOTH);
glBegin(GL_LINES); {
int firstIndex = math_max(static_cast<int>(firstVisualIndex), 0);
int lastIndex = math_min(static_cast<int>(lastVisualIndex), dataSize);
glColor4f(static_cast<GLfloat>(m_signalColor_r),
static_cast<GLfloat>(m_signalColor_g),
static_cast<GLfloat>(m_signalColor_b),
0.8f);
for (int visualIndex = firstIndex;
visualIndex < lastIndex;
visualIndex += 2) {
GLfloat maxAll = math_max(
data[visualIndex].filtered.all,
data[visualIndex+1].filtered.all);
glVertex2f(float(visualIndex), 0.f);
glVertex2f(float(visualIndex), maxAll);
}
}
glEnd();
}
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
painter->endNativePainting();
}
#endif // !defined(QT_NO_OPENGL) && !defined(QT_OPENGL_ES_2)
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