//////////////////////////////////////////////////////////////////////
// Called to draw an overlay bitmap containing grid and text that
// does not need to be recreated every fft data update.
//////////////////////////////////////////////////////////////////////
void CPlotter::drawOverlay()
{
if (m_OverlayPixmap.isNull())
return;
int w = m_OverlayPixmap.width();
int h = m_OverlayPixmap.height();
int x,y;
float pixperdiv;
QRect rect;
QPainter painter(&m_OverlayPixmap);
painter.initFrom(this);
// horizontal grids (size and grid calcs could be moved to resize)
m_VerDivs = h/m_VdivDelta+1;
m_HorDivs = qMin(w/m_HdivDelta, HORZ_DIVS_MAX);
if (m_HorDivs % 2)
m_HorDivs++; // we want an odd number of divs so that we have a center line
//m_OverlayPixmap.fill(Qt::black);
// fill background with gradient
QLinearGradient gradient(0, 0, 0 ,h);
gradient.setColorAt(0, QColor(0x20,0x20,0x20,0xFF));
gradient.setColorAt(1, QColor(0x4F,0x4F,0x4F,0xFF));
painter.setBrush(gradient);
painter.drawRect(0, 0, w, h);
// Draw demod filter box
if (m_FilterBoxEnabled)
{
// Clamping no longer necessary as we do it in mouseMove()
//ClampDemodParameters();
m_DemodFreqX = xFromFreq(m_DemodCenterFreq);
m_DemodLowCutFreqX = xFromFreq(m_DemodCenterFreq + m_DemodLowCutFreq);
m_DemodHiCutFreqX = xFromFreq(m_DemodCenterFreq + m_DemodHiCutFreq);
int dw = m_DemodHiCutFreqX - m_DemodLowCutFreqX;
painter.setBrush(Qt::SolidPattern);
painter.setOpacity(0.3);
painter.fillRect(m_DemodLowCutFreqX, 0, dw, h, Qt::gray);
painter.setOpacity(1.0);
painter.setPen(QPen(QColor(0xFF,0x71,0x71,0xFF), 1, Qt::SolidLine));
painter.drawLine(m_DemodFreqX, 0, m_DemodFreqX, h);
}
// create Font to use for scales
QFont Font("Arial");
Font.setPointSize(m_FontSize);
QFontMetrics metrics(Font);
Font.setWeight(QFont::Normal);
painter.setFont(Font);
// draw vertical grids
pixperdiv = (float)w / (float)m_HorDivs;
y = h - h/m_VerDivs/2;
painter.setPen(QPen(QColor(0xF0,0xF0,0xF0,0x30), 1, Qt::DotLine));
for (int i = 1; i < m_HorDivs; i++)
{
x = (int)((float)i*pixperdiv);
painter.drawLine(x, 0, x, y);
}
if (m_CenterLineEnabled)
{
// center line
x = xFromFreq(m_CenterFreq);
if (x > 0 && x < w)
{
painter.setPen(QPen(QColor(0x78,0x82,0x96,0xFF), 1, Qt::SolidLine));
painter.drawLine(x, 0, x, y);
}
}
// draw frequency values
makeFrequencyStrs();
painter.setPen(QColor(0xD8,0xBA,0xA1,0xFF));
y = h - (h/m_VerDivs);
m_XAxisYCenter = h - metrics.height()/2;
for (int i = 1; i < m_HorDivs; i++)
{
x = (int)((float)i*pixperdiv - pixperdiv/2);
rect.setRect(x, y, (int)pixperdiv, h/m_VerDivs);
painter.drawText(rect, Qt::AlignHCenter|Qt::AlignBottom, m_HDivText[i]);
}
m_dBStepSize = abs(m_MaxdB-m_MindB)/(double)m_VerDivs;
pixperdiv = (float)h / (float)m_VerDivs;
painter.setPen(QPen(QColor(0xF0,0xF0,0xF0,0x30), 1,Qt::DotLine));
for (int i = 1; i < m_VerDivs; i++)
{
y = (int)((float) i*pixperdiv);
painter.drawLine(5*metrics.width("0",-1), y, w, y);
}
// draw amplitude values
painter.setPen(QColor(0xD8,0xBA,0xA1,0xFF));
//Font.setWeight(QFont::Light);
painter.setFont(Font);
int dB = m_MaxdB;
m_YAxisWidth = metrics.width("-120 ");
for (int i = 1; i < m_VerDivs; i++)
{
dB -= m_dBStepSize; // move to end if want to include maxdb
y = (int)((float)i*pixperdiv);
rect.setRect(0, y-metrics.height()/2, m_YAxisWidth, metrics.height());
painter.drawText(rect, Qt::AlignRight|Qt::AlignVCenter, QString::number(dB));
}
if (!m_Running)
{
// if not running so is no data updates to draw to screen
// copy into 2Dbitmap the overlay bitmap.
m_2DPixmap = m_OverlayPixmap.copy(0,0,w,h);
// trigger a new paintEvent
update();
}
}
//////////////////////////////////////////////////////////////////////
// Called to draw an overlay bitmap containing grid and text that
// does not need to be recreated every fft data update.
//////////////////////////////////////////////////////////////////////
void CPlotter::drawOverlay()
{
if (m_OverlayPixmap.isNull())
return;
int w = m_OverlayPixmap.width();
int h = m_OverlayPixmap.height();
int x,y;
float pixperdiv;
QRect rect;
QPainter painter(&m_OverlayPixmap);
painter.initFrom(this);
// horizontal grids (size and grid calcs could be moved to resize)
m_VerDivs = h/m_VdivDelta+1;
m_HorDivs = qMin(w/m_HdivDelta, HORZ_DIVS_MAX);
if (m_HorDivs % 2)
m_HorDivs++; // we want an odd number of divs so that we have a center line
//m_OverlayPixmap.fill(Qt::black);
// fill background with gradient
QLinearGradient gradient(0, 0, 0 ,h);
gradient.setColorAt(0, QColor(0x20,0x20,0x20,0xFF));
gradient.setColorAt(1, QColor(0x4F,0x4F,0x4F,0xFF));
painter.setBrush(gradient);
painter.drawRect(0, 0, w, h);
// Draw demod filter box
if (m_FilterBoxEnabled)
{
// Clamping no longer necessary as we do it in mouseMove()
//ClampDemodParameters();
m_DemodFreqX = xFromFreq(m_DemodCenterFreq);
m_DemodLowCutFreqX = xFromFreq(m_DemodCenterFreq + m_DemodLowCutFreq);
m_DemodHiCutFreqX = xFromFreq(m_DemodCenterFreq + m_DemodHiCutFreq);
int dw = m_DemodHiCutFreqX - m_DemodLowCutFreqX;
painter.setBrush(Qt::SolidPattern);
painter.setOpacity(0.3);
painter.fillRect(m_DemodLowCutFreqX, 0, dw, h, Qt::gray);
painter.setOpacity(1.0);
painter.setPen(QPen(QColor(0xFF,0x71,0x71,0xFF), 1, Qt::SolidLine));
painter.drawLine(m_DemodFreqX, 0, m_DemodFreqX, h);
}
// create Font to use for scales
QFont Font("Arial");
Font.setPointSize(m_FontSize);
QFontMetrics metrics(Font);
Font.setWeight(QFont::Normal);
painter.setFont(Font);
// draw vertical grids
pixperdiv = (float)w / (float)m_HorDivs;
y = h - h/m_VerDivs/2;
painter.setPen(QPen(QColor(0xF0,0xF0,0xF0,0x30), 1, Qt::DotLine));
for (int i = 1; i < m_HorDivs; i++)
{
x = (int)((float)i*pixperdiv);
painter.drawLine(x, 0, x, y);
}
//Draw Bookmark Tags
m_BookmarkTags.clear();
static const QFontMetrics fm(painter.font());
static const int fontHeight = fm.ascent()+1; // height();
static const int slant = 5;
static const int levelHeight = fontHeight+5;
static const int nLevels = 3;
QList<BookmarkInfo> bookmarks = Bookmarks::Get().getBookmarksInRange(m_CenterFreq+m_FftCenter-m_Span/2, m_CenterFreq+m_FftCenter+m_Span/2);
int tagEnd[nLevels] = {0};
for(int i=0; i<bookmarks.size(); i++)
{
x=xFromFreq(bookmarks[i].frequency);
#if defined(_WIN16) || defined(_WIN32) || defined(_WIN64)
int nameWidth= fm.width(bookmarks[i].name);
#else
int nameWidth= fm.boundingRect(bookmarks[i].name).width();
#endif
int level = 0;
for(; level<nLevels && tagEnd[level]>x; level++);
level%=nLevels;
tagEnd[level]=x+nameWidth+slant-1;
m_BookmarkTags.append(qMakePair<QRect, qint64>(QRect(x, level*levelHeight, nameWidth+slant, fontHeight), bookmarks[i].frequency));
QColor color = QColor(bookmarks[i].GetColor());
color.setAlpha(0x60);
painter.setPen(QPen(color, 1, Qt::DashLine));
painter.drawLine(x, level*levelHeight+fontHeight+slant, x, y); //Vertical line
painter.setPen(QPen(color, 1, Qt::SolidLine));
painter.drawLine(x+slant, level*levelHeight+fontHeight, x+nameWidth+slant-1, level*levelHeight+fontHeight); //Horizontal line
painter.drawLine(x+1,level*levelHeight+fontHeight+slant-1, x+slant-1, level*levelHeight+fontHeight+1); //Diagonal line
/*
painter.setPen(QPen(QColor(0xF0,0xF0,0xF0,0xB0), 1, Qt::SolidLine));
QPolygon polygon(6);
polygon.setPoint(0, 0, 10);
polygon.setPoint(1, 5, 15);
polygon.setPoint(2, 5+nameWidth, 15);
polygon.setPoint(3, 5+nameWidth, 0);
polygon.setPoint(4, 5, 0);
polygon.setPoint(5, 0, 5);
polygon.translate(x, level*18);
painter.drawPolygon(polygon);
*/
color.setAlpha(0xFF);
painter.setPen(QPen(color, 2, Qt::SolidLine));
painter.drawText(x+slant,level*levelHeight, nameWidth, fontHeight, Qt::AlignVCenter | Qt::AlignHCenter, bookmarks[i].name);
}
if (m_CenterLineEnabled)
{
// center line
x = xFromFreq(m_CenterFreq);
if (x > 0 && x < w)
{
painter.setPen(QPen(QColor(0x78,0x82,0x96,0xFF), 1, Qt::SolidLine));
painter.drawLine(x, 0, x, y);
}
}
// draw frequency values
makeFrequencyStrs();
painter.setPen(QColor(0xD8,0xBA,0xA1,0xFF));
y = h - (h/m_VerDivs);
m_XAxisYCenter = h - metrics.height()/2;
for (int i = 1; i < m_HorDivs; i++)
{
x = (int)((float)i*pixperdiv - pixperdiv/2);
rect.setRect(x, y, (int)pixperdiv, h/m_VerDivs);
painter.drawText(rect, Qt::AlignHCenter|Qt::AlignBottom, m_HDivText[i]);
}
m_dBStepSize = fabs(m_MaxdB - m_MindB)/(float)m_VerDivs;
pixperdiv = (float)h / (float)m_VerDivs;
painter.setPen(QPen(QColor(0xF0,0xF0,0xF0,0x30), 1,Qt::DotLine));
for (int i = 1; i < m_VerDivs; i++)
{
y = (int)((float) i*pixperdiv);
painter.drawLine(5*metrics.width("0",-1), y, w, y);
}
// draw amplitude values
painter.setPen(QColor(0xD8,0xBA,0xA1,0xFF));
//Font.setWeight(QFont::Light);
painter.setFont(Font);
int dB = m_MaxdB;
m_YAxisWidth = metrics.width("-120 ");
for (int i = 1; i < m_VerDivs; i++)
{
dB -= m_dBStepSize; // move to end if want to include maxdb
y = (int)((float)i*pixperdiv);
rect.setRect(0, y-metrics.height()/2, m_YAxisWidth, metrics.height());
painter.drawText(rect, Qt::AlignRight|Qt::AlignVCenter, QString::number(dB));
}
if (!m_Running)
{
// if not running so is no data updates to draw to screen
// copy into 2Dbitmap the overlay bitmap.
m_2DPixmap = m_OverlayPixmap.copy(0,0,w,h);
// trigger a new paintEvent
update();
}
painter.end();
}
