void wxPlFrame::OnKey( wxKeyEvent &event )
{
//This only works on Windows, unfortunately on wxGTK, wxFrames cannot catch key presses
if ( m_locateMode )
{
PLNamedMutexLocker locker( &m_mutex );
MemoryMapHeader *header = (MemoryMapHeader *) m_memoryMap.getBuffer();
wxSize clientSize = GetClientSize();
header->graphicsIn.pX = m_cursorPosition.x;
header->graphicsIn.pY = m_cursorPosition.y;
header->graphicsIn.dX = PLFLT( m_cursorPosition.x + 0.5 ) / PLFLT( clientSize.GetWidth() );
header->graphicsIn.dY = 1.0 - PLFLT( m_cursorPosition.y + 0.5 ) / PLFLT( clientSize.GetHeight() );
// gin->state = keyEvent->state;
int keycode = event.GetKeyCode();
header->graphicsIn.string[0] = (char) keycode;
header->graphicsIn.string[1] = '\0';
// ESCAPE, RETURN, etc. are already in ASCII equivalent
header->graphicsIn.keysym = keycode;
header->locateModeFlag = 0;
m_locateMode = false;
}
}
void wxPlFrame::OnMouse( wxMouseEvent &event )
{
//save the mouse position for use in key presses
m_cursorPosition = event.GetPosition();
//If the mouse button was clicked then
if ( m_locateMode && event.ButtonDown() )
{
PLNamedMutexLocker locker( &m_mutex );
MemoryMapHeader *header = (MemoryMapHeader *) m_memoryMap.getBuffer();
wxSize clientSize = GetClientSize();
//PLGraphicsIn & graphicsIn = header->graphicsIn;
header->graphicsIn.pX = m_cursorPosition.x;
header->graphicsIn.pY = m_cursorPosition.y;
header->graphicsIn.dX = PLFLT( m_cursorPosition.x + 0.5 ) / PLFLT( clientSize.GetWidth() );
header->graphicsIn.dY = 1.0 - PLFLT( m_cursorPosition.y + 0.5 ) / PLFLT( clientSize.GetHeight() );
if ( event.LeftDown() )
{
header->graphicsIn.button = 1; // X11/X.h: #define Button1 1
header->graphicsIn.state = 1 << 8; // X11/X.h: #define Button1Mask (1<<8)
}
else if ( event.MiddleDown() )
{
header->graphicsIn.button = 2; // X11/X.h: #define Button2 2
header->graphicsIn.state = 1 << 9; // X11/X.h: #define Button2Mask (1<<9)
}
else if ( event.RightDown() )
{
header->graphicsIn.button = 3; // X11/X.h: #define Button3 3
header->graphicsIn.state = 1 << 10; // X11/X.h: #define Button3Mask (1<<10)
}
header->graphicsIn.keysym = 0x20; // keysym for button event from xwin.c
header->locateModeFlag = 0;
m_locateMode = false;
}
}
/**
* Write data onto the screen as some graph
* @return Returns the number of bytes written
* @param buf Pointer to the buffer to write out.
*/
size_t PlpotSink::write(Buffer *buf)
{
if (pls == NULL || settings == NULL) { return 0; }
float* src = (float*) buf->getData();
float ppeak = -1e9, npeak = 1e9;
size_t len = settings->fft_ssb_points; // len = buf->getLength() / (sizeof(float));
float xscale;
std::string xlabel("FFT point");
std::string ylabel("Logarithmic Spectral Power");
xscale = 1e-6 * settings->samplingfreq / float(settings->fft_points);
xlabel = std::string("Video BW in MHz");
for (size_t i=0; i<len; i++) {
xdata[i] = xscale*PLFLT(i);
// ydata[i] = log10(abs(*(src+0))); // Re, skip Im if data is {Re,Im}
// src += 2;
if (*src == 0.0f) {
ydata[i] = 1;
} else {
ydata[i] = log10(abs(*(src+0)));
}
src++;
if (i > 16) {
if (ydata[i] > ppeak) ppeak = ydata[i];
if (ydata[i] < npeak) npeak = ydata[i];
}
}
#if 0
std::cerr << "len=" << len
<< " npeak=" << npeak
<< " ppeak=" << ppeak
<< std::endl << std::flush;
#endif
pls->col0(2);
pls->schr(0,0.5);
pls->vpor(0.1, 0.9, 0.1, 0.9);
pls->wind(xdata[0], xdata[len-1], npeak, ppeak);
pls->clear();
pls->box("bcnst", 0.0, 0, "bnstv", 0.0, 0);
pls->line(len, xdata, ydata);
pls->lab(xlabel.c_str(), ylabel.c_str(), this->title.c_str());
return buf->getLength();
}