void ASSISTANT::Text::Draw(CDC *pDC, float _zoomFactor, double dOffX, double dOffY)
{
if (!visible) return;
if (text.IsEmpty())
return;
Gdiplus::Graphics graphics(pDC->m_hDC);
graphics.SetTextRenderingHint(Gdiplus::TextRenderingHintAntiAliasGridFit);
// Move and Scale
graphics.TranslateTransform((Gdiplus::REAL)dOffX, (Gdiplus::REAL)dOffY);
Gdiplus::Font gdipFont(pDC->m_hDC, &m_logFont);
Gdiplus::FontFamily fontFamily;
gdipFont.GetFamily(&fontFamily);
int fontStyle = GetValidFontStyle(fontFamily);
Gdiplus::REAL ascent = fontFamily.GetCellAscent(fontStyle) *
(gdipFont.GetSize() / fontFamily.GetEmHeight(fontStyle));
Gdiplus::PointF drawPoint;
drawPoint.X = (Gdiplus::REAL)m_dX;
drawPoint.Y = (Gdiplus::REAL)(m_dY - ascent);
// convert text string to WCHAR format
int iStringLength = text.GetLength();
WCHAR *wcString = (WCHAR *)malloc((iStringLength+1)*sizeof(WCHAR)); // +1 for null termination
#ifdef _UNICODE
wcscpy(wcString, text);
#else
MultiByteToWideChar(CP_ACP, 0, text, iStringLength+1,
wcString, iStringLength+1);
#endif
// compute real text width
Gdiplus::StringFormat measureStringFormat(Gdiplus::StringFormatFlagsMeasureTrailingSpaces);
Gdiplus::RectF bbox;
graphics.MeasureString(wcString, iStringLength, &gdipFont, Gdiplus::PointF(0.0, 0.0), &measureStringFormat, &bbox);
Gdiplus::CharacterRange charRange(0, iStringLength);
measureStringFormat.SetMeasurableCharacterRanges(1, &charRange);
Gdiplus::Region pRangeRegion[1];
graphics.MeasureCharacterRanges(wcString, iStringLength,
&gdipFont, bbox, &measureStringFormat, 1, pRangeRegion);
// get bounding rectangle
Gdiplus::RectF rect;
pRangeRegion[0].GetBounds(&rect, &graphics);
Gdiplus::REAL realTextWidth = rect.Width;
if (iStringLength > 1 && m_dWidth != 0 && realTextWidth != m_dWidth)
{
Gdiplus::REAL scaleX = (Gdiplus::REAL)(m_dWidth / realTextWidth);
graphics.ScaleTransform(scaleX, 1.0);
drawPoint.X = (Gdiplus::REAL)(m_dX / scaleX); //(x_*scaleX - x_);
}
// the text should begin at x, y
drawPoint.X -= rect.X;
graphics.ScaleTransform(_zoomFactor, _zoomFactor);
Gdiplus::Color clrText(m_argbLineColor);
Gdiplus::SolidBrush solidBrush(clrText);
graphics.DrawString(wcString, iStringLength, &gdipFont, drawPoint, &measureStringFormat, &solidBrush);
if (wcString)
delete wcString;
}
throb::throb (int32_t rate, uint8_t mode, QwtPlot *scope) {
double half_bw;
float *fp;
int16_t i;
sampleRate = rate;
downRate = sampleRate / 250;
throbMode = mode;
throbscope = scope;
throbIF = THROB_IF;
afcOn = false;
throbReverse = false;
//
for (i = 0; i < 55; i ++)
rxtone [i] = NULL;
switch (throbMode) {
case MODE_THROB1:
symlen = (SYMLEN_1 * rate / 8000);
rxsymlen = symlen / downRate;
//
// pulse for filter
fp = (float *)alloca (rxsymlen * sizeof (float));
mk_pulse (fp, rxsymlen, HALF);
idlesym = 0;
spacesym = 44;
freqs = ThrobToneFreqsNarrow;
half_bw = 36.0;
break;
case MODE_THROB2:
symlen = (SYMLEN_2 * rate) / 8000;
rxsymlen = symlen / downRate;
fp = (float *)alloca (rxsymlen * sizeof (float));
mk_pulse (fp, rxsymlen, HALF);
idlesym = 0;
spacesym = 44;
freqs = ThrobToneFreqsNarrow;
half_bw = 36.0;
break;
case MODE_THROB4:
default:
symlen = (SYMLEN_4 * rate) / 8000;
rxsymlen = symlen / downRate;
fp = (float *)alloca (rxsymlen * sizeof (float));
mk_pulse (fp, rxsymlen, FULL);
idlesym = 0;
spacesym = 44;
freqs = ThrobToneFreqsWid;
half_bw = 72.0;
break;
case MODE_THROBX1:
symlen = (SYMLEN_1 * rate) / 8000;
rxsymlen = symlen / downRate;
fp = (float *)alloca (rxsymlen * sizeof (float));
mk_pulse (fp, rxsymlen, HALF);
idlesym = 0;
spacesym = 1;
freqs = ThrobXToneFreqsNarrow;
half_bw = 47.0;
break;
case MODE_THROBX2:
symlen = (SYMLEN_2 * rate / 8000);
rxsymlen = symlen / downRate;
fp = (float *)alloca (rxsymlen * sizeof (float));
mk_pulse (fp, rxsymlen, HALF);
idlesym = 0;
spacesym = 1;
freqs = ThrobXToneFreqsNarrow;
half_bw = 47.0;
break;
}
ourScope = new fft_scope (throbscope,
64,
1,
50,
256,
rxsymlen,
4);
ourScope -> SelectView (WATERFALL_MODE);
fft_filter = new fftFilter (2048, 255);
fft_filter -> setLowPass (half_bw, sampleRate);
syncFilter = new Basic_FIR (symlen / downRate);
syncFilter -> setTaps (rxsymlen, fp, NULL);
for (i = 0; i < tonesformode (throbMode); i++)
rxtone[i] = mk_rxtone (freqs[i], symlen, downRate);
metrics = 0.0;
thresHold = 0;
symptr = 0;
localOscillator = new Oscillator (sampleRate);
for (i = 0; i < 1000; i++)
syncbuf [i] = 0.0;
rxcntr = rxsymlen;
waitsync = 1;
deccntr = 0;
symptr = 0;
shift = 0;
lastchar = '\0';
clrText ();
}