void TimeLogChart::DrawLegends(wxPaintDC &dc)
{
const int LEGEND_LENGTH = 10;
if (m_chartCollection == NULL && m_chartCollection->GetCount() == 0)
return;
dc.SetFont(*m_valueFont);
wxSize ext = dc.GetTextExtent("H");
int dy = GetClientRect().GetBottom() - ext.GetHeight();
int dx = m_axisBounds.GetLeft();
for (int i = 0; i < m_chartCollection->GetCount(); i++)
{
ChartValueList *list = m_chartCollection->Item(i)->GetData();
dc.SetPen(wxPen(list->GetColour(), 5));
// draw legend with latest value
wxString label = list->GetTitle();
if (list->GetCount() > 0)
{
// get the latest value
double value = *list->GetLast()->GetData()/m_valueAxisScale;
label += " (" + wxString::Format(m_valueAxisFormat, value) + ")";
}
ext = dc.GetTextExtent(label);
dc.DrawLine(dx, dy, dx + LEGEND_LENGTH, dy);
dx += LEGEND_LENGTH + 5;
dc.DrawText(label, dx, dy - ext.GetHeight()/2);
dx += ext.GetWidth() + 20;
}
}
void TimeLogChart::DrawAxis(wxPaintDC &dc)
{
const int MARKER_OFFSET = 5;
dc.SetPen(*wxTRANSPARENT_PEN);
dc.SetBrush(*wxWHITE_BRUSH);
dc.DrawRectangle(m_axisBounds);
dc.SetPen(wxPen(wxColour(*wxBLACK), 1, wxPENSTYLE_DOT));
int topBound = m_axisBounds.GetTop();
int leftBound = m_axisBounds.GetLeft();
int rightBound = m_axisBounds.GetRight();
int bottomBound = m_axisBounds.GetBottom();
int dx = leftBound;
wxFont savedFont = dc.GetFont();
dc.SetFont(*m_valueFont);
int n = m_logDuration -1;
for (int i = 0; i <= n; i++)
{
dx = leftBound + (int)floor(i*m_axisBounds.GetWidth() / (double)n);
if (i % m_logTickFrequency == 0)
{
dc.DrawLine(dx, topBound, dx, bottomBound);
if (i % (m_logTickFrequency*2) == 0)
{
// draw axis marker
wxString s = wxString::Format(wxT("%d secs"), (m_logDuration-i));
wxSize ext = dc.GetTextExtent(s);
dc.DrawText(s, dx - ext.GetWidth()/2, bottomBound + MARKER_OFFSET);
}
}
}
dc.DrawLine(dx, topBound, dx, bottomBound);
int yValue = m_maxValue;
int yValueSteps = (m_minValue-m_maxValue)/m_valueDivisions;
int ySteps = ValueToPixel((m_maxValue - m_minValue)/m_valueDivisions);
int dy = topBound;
for (int n = 0; n < m_valueDivisions; n++)
{
dc.DrawLine(leftBound, dy, rightBound, dy);
wxString s = wxString::Format(m_valueAxisFormat, (double)yValue/m_valueAxisScale);
wxSize ext = dc.GetTextExtent(s);
dc.DrawText(s, m_axisBounds.GetLeft()-ext.GetWidth() - MARKER_OFFSET, dy - ext.GetHeight()/2);
dy += ySteps;
yValue += yValueSteps;
}
dc.DrawLine(leftBound, bottomBound, rightBound, bottomBound);
dc.SetFont(savedFont);
}
//-----------------------------------------------------------------------------
void LineProfileCanvas::OnPaintCustom( wxPaintDC& dc )
//-----------------------------------------------------------------------------
{
wxCoord yOffset( 1 ), w( 0 ), h( 0 );
dc.GetSize( &w, &h );
const double scaleX = static_cast<double>( w - 2 * GetBorderWidth() ) / static_cast<double>( ( GetDataCount() == 0 ) ? 1 : GetDataCount() - 1 );
const double scaleY = GetScaleY( h );
DrawMarkerLines( dc, w, h, scaleX );
unsigned int from, to;
GetDrawRange( &from, &to );
const int borderWidth = GetBorderWidth();
const wxString YMarkerString( wxString::Format( wxT( "Draw Range(absolute): %d / %d, " ), from, to ) );
wxCoord xOffset;
dc.GetTextExtent( YMarkerString, &xOffset, 0 );
xOffset += borderWidth / 2;
dc.DrawText( YMarkerString, borderWidth / 2, yOffset );
if( m_boUnsupportedPixelFormat )
{
dc.SetTextForeground( *wxRED );
dc.DrawText( wxString( wxT( "Unsupported pixel format" ) ), xOffset, yOffset );
dc.SetTextForeground( *wxBLACK );
}
else if( m_ppData )
{
for( int channel = 0; channel < m_ChannelCount; channel++ )
{
DrawProfileLine( dc, h, borderWidth + 1, scaleX, scaleY, from, to, m_ppData[channel], GetDataCount(), *m_Pens[channel].pColour_ );
DrawInfoString( dc, wxString::Format( wxT( "%s%s: " ), ( channel != 0 ) ? wxT( ", " ) : wxT( "" ), m_Pens[channel].description_.c_str() ), xOffset, yOffset, *( m_Pens[channel].pColour_ ) );
}
}
}
static int DrawText(wxPaintDC& arDC, const wxString& arString, int aStartPosition, wxFont& arFont)
{
int Width = 0;
int Height = 0;
if (arString.Length() > 0)
{
arDC.SetFont(arFont);
arDC.GetTextExtent(arString, &Width, &Height);
arDC.DrawText(arString, aStartPosition, 0);
}
return aStartPosition+Width;
}
void MyVideoCaptureWindow::DoPaint( wxPaintDC& dc )
{
wxVideoCaptureWindowBase::DoPaint(dc);
if (!IsDeviceConnected())
{
// The window is blank when disconnected so we might as well
// give a hint to people that they need to connect first.
wxBitmap bmp = wxArtProvider::GetBitmap(wxART_MISSING_IMAGE, wxART_OTHER, wxSize(32, 32));
wxSize clientSize(GetClientSize());
wxString txt(wxT("Please select a capture device"));
wxSize txtSize = dc.GetTextExtent(txt);
dc.DrawText(txt, clientSize.GetWidth()/2 - txtSize.GetWidth()/2,
clientSize.GetHeight()/2 - txtSize.GetHeight());
dc.DrawBitmap(bmp, clientSize.GetWidth()/2 - bmp.GetWidth()/2,
clientSize.GetHeight()/2 + 4);
}
}
