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#include "glwaveformrendererfilteredsignal.h"
#include "track/track.h"
#include "waveform/waveform.h"
#include "waveformwidgetrenderer.h"
#include "waveform/waveformwidgetfactory.h"
#include "util/math.h"
#include <QDomNode>
#if !defined(QT_NO_OPENGL) && !defined(QT_OPENGL_ES_2)
GLWaveformRendererFilteredSignal::GLWaveformRendererFilteredSignal(
WaveformWidgetRenderer* waveformWidgetRenderer)
: WaveformRendererSignalBase(waveformWidgetRenderer) {
initializeOpenGLFunctions();
}
GLWaveformRendererFilteredSignal::~GLWaveformRendererFilteredSignal() {
}
void GLWaveformRendererFilteredSignal::onSetup(const QDomNode& /*node*/) {
}
void GLWaveformRendererFilteredSignal::draw(QPainter* painter, QPaintEvent* /*event*/) {
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;
}
double firstVisualIndex = m_waveformRenderer->getFirstDisplayedPosition() * dataSize;
double lastVisualIndex = m_waveformRenderer->getLastDisplayedPosition() * dataSize;
const double lineWidth = (1.0 / m_waveformRenderer->getVisualSamplePerPixel()) + 1.0;
const int firstIndex = int(firstVisualIndex+0.5);
firstVisualIndex = firstIndex - firstIndex%2;
const int lastIndex = 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);
// Per-band gain from the EQ knobs.
float allGain(1.0), lowGain(1.0), midGain(1.0), highGain(1.0);
getGains(&allGain, &lowGain, &midGain, &highGain);
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(m_axesColor_r, m_axesColor_g,
m_axesColor_b, 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(m_lowColor_r, m_lowColor_g, m_lowColor_b, 0.8);
for (int visualIndex = firstIndex;
visualIndex < lastIndex;
visualIndex += 2) {
GLfloat maxLow0 = data[visualIndex].filtered.low;
GLfloat maxLow1 = data[visualIndex+1].filtered.low;
glVertex2f(visualIndex,lowGain*maxLow0);
glVertex2f(visualIndex,-1.f*lowGain*maxLow1);
}
glColor4f(m_midColor_r, m_midColor_g, m_midColor_b, 0.85);
for (int visualIndex = firstIndex;
visualIndex < lastIndex;
visualIndex += 2) {
GLfloat maxMid0 = data[visualIndex].filtered.mid;
GLfloat maxMid1 = data[visualIndex+1].filtered.mid;
glVertex2f(visualIndex, midGain * maxMid0);
glVertex2f(visualIndex,-1.f * midGain * maxMid1);
}
glColor4f(m_highColor_r, m_highColor_g, m_highColor_b, 0.9);
for (int visualIndex = firstIndex;
visualIndex < lastIndex;
visualIndex += 2) {
GLfloat maxHigh0 = data[visualIndex].filtered.high;
GLfloat maxHigh1 = data[visualIndex + 1].filtered.high;
glVertex2f(visualIndex, highGain * maxHigh0);
glVertex2f(visualIndex, -1.f * highGain * maxHigh1);
}
}
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(m_lowColor_r, m_lowColor_g, m_lowColor_b, 0.8);
for (int visualIndex = firstIndex;
visualIndex < lastIndex;
visualIndex += 2) {
GLfloat maxLow = math_max(
data[visualIndex].filtered.low,
data[visualIndex+1].filtered.low);
glVertex2f(visualIndex, 0);
glVertex2f(visualIndex, lowGain * maxLow);
}
glColor4f(m_midColor_r, m_midColor_g, m_midColor_b, 0.85);
for (int visualIndex = firstIndex;
visualIndex < lastIndex;
visualIndex += 2) {
GLfloat maxMid = math_max(
data[visualIndex].filtered.mid,
data[visualIndex+1].filtered.mid);
glVertex2f(visualIndex, 0.f);
glVertex2f(visualIndex, midGain * maxMid);
}
glColor4f(m_highColor_r, m_highColor_g, m_highColor_b, 0.9);
for (int visualIndex = firstIndex;
visualIndex < lastIndex;
visualIndex += 2) {
GLfloat maxHigh = math_max(
data[visualIndex].filtered.high,
data[visualIndex + 1].filtered.high);
glVertex2f(visualIndex, 0.f);
glVertex2f(visualIndex, highGain * maxHigh);
}
}
glEnd();
}
//DEBUG
/*glDisable(GL_ALPHA_TEST);
glBegin(GL_LINE_LOOP);
{
glColor4f(0.5,1.0,0.5,0.25);
glVertex3f(firstVisualIndex,-1.0f, 0.0f);
glVertex3f(lastVisualIndex, 1.0f, 0.0f);
glVertex3f(lastVisualIndex,-1.0f, 0.0f);
glVertex3f(firstVisualIndex, 1.0f, 0.0f);
}
glEnd();*/
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
painter->endNativePainting();
}
#endif // !defined(QT_NO_OPENGL) && !defined(QT_OPENGL_ES_2)
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