docs/latex/wx/plotwindow.tex

   1 %
   2 % automatically generated by HelpGen from
   3 % plot.h at 11/Feb/00 18:00:57
   4 %
   5
   6 \section{\class{wxPlotWindow}}\label{wxplotwindow}
   7
   8 wxPlotWindow is a specialized window designed to display data that typically has
   9 been measured by machines, i.e. that may have thousands of values. One example of
  10 such data would be the well known ECG measuring the electrical activity of your
  11 heart: the measuring device will produce thousands of values per minute, several
  12 measurements are done simultanously and you might want to have a look at parts
  13 of the curves, enlarging them or scrolling from one position to another. Note
  14 that this window is not useful for real-time measuring or for displaying charts
  15 with error bars etc.
  16
  17 A single curve in the plot window is represented by the \helpref{wxPlotCurve}{wxplotcurve}
  18 class.
  19
  20 The wxPlotWindow interacts with program using events, for example when clicking
  21 or double clicking on a curve or when selecting one by clicking on it (which
  22 can be vetoed). Future versions will hopefully feature selecting values or
  23 sections of the displayed curves etc.
  24
  25 \wxheading{Derived from}
  26
  27 \helpref{wxScrolledWindow}{wxscrolledwindow}\\
  28 \helpref{wxPanel}{wxpanel}\\
  29 \helpref{wxWindow}{wxwindow}\\
  30 \helpref{wxEvtHandler}{wxevthandler}\\
  31 \helpref{wxObject}{wxobject}
  32
  33 \wxheading{Window styles}
  34
  35 \begin{twocollist}\itemsep=0pt
  36 \twocolitem{\windowstyle{wxPLOT\_BUTTON\_MOVE}}{Display buttons to allao moving individual curves up or down.}
  37 \twocolitem{\windowstyle{wxPLOT\_BUTTON\_ENLARGE}}{Display buttons to allow enlarging individual curves vertically.}
  38 \twocolitem{\windowstyle{wxPLOT\_BUTTON\_ZOOM}}{Display buttons to allow zooming all curves horizontally.}
  39 \twocolitem{\windowstyle{wxPLOT\_BUTTON\_ALL}}{Display all buttons.}
  40 \twocolitem{\windowstyle{wxPLOT\_Y\_AXIS}}{Display an Y axis to the left of the drawing area.}
  41 \twocolitem{\windowstyle{wxPLOT\_X\_AXIS}}{Display a X axis at the bottom of the drawing area.}
  42 \twocolitem{\windowstyle{wxPLOT\_DEFAULT}}{All of the above options.}
  43 \end{twocollist}
  44
  45 \latexignore{\rtfignore{\wxheading{Members}}}
  46
  47 \membersection{wxPlotWindow::wxPlotWindow}\label{wxplotwindowwxplotwindow}
  48
  49 \func{}{wxPlotWindow}{\void}
  50
  51 \func{}{wxPlotWindow}{\param{wxWindow* }{parent}, \param{wxWindowID }{id}, \param{const wxPoint\& }{pos}, \param{const wxSize\& }{size}, \param{int }{flags = wxPLOT\_DEFAULT}}
  52
  53 Constructor.
  54
  55 \membersection{wxPlotWindow::\destruct{wxPlotWindow}}\label{wxplotwindowdtor}
  56
  57 \func{}{\destruct{wxPlotWindow}}{\void}
  58
  59 The destructor will not delete the curves associated to the window.
  60
  61 \membersection{wxPlotWindow::Add}\label{wxplotwindowadd}
  62
  63 \func{void}{Add}{\param{wxPlotCurve* }{curve}}
  64
  65 Add a curve to the window.
  66
  67 \membersection{wxPlotWindow::GetCount}\label{wxplotwindowgetcount}
  68
  69 \func{size\_t}{GetCount}{\void}
  70
  71 Returns number of curves.
  72
  73 \membersection{wxPlotWindow::GetAt}\label{wxplotwindowgetat}
  74
  75 \func{wxPlotCurve*}{GetAt}{\param{size\_t }{n}}
  76
  77 Get the nth curve.
  78
  79 \membersection{wxPlotWindow::SetCurrent}\label{wxplotwindowsetcurrent}
  80
  81 \func{void}{SetCurrent}{\param{wxPlotCurve* }{current}}
  82
  83 Make one curve the current curve. This will emit a wxPlotEvent.
  84
  85 \membersection{wxPlotWindow::GetCurrent}\label{wxplotwindowgetcurrent}
  86
  87 \func{wxPlotCurve*}{GetCurrent}{\void}
  88
  89 Returns a pointer to the current curve, or NULL.
  90
  91 \membersection{wxPlotWindow::Delete}\label{wxplotwindowdelete}
  92
  93 \func{void}{Delete}{\param{wxPlotCurve* }{curve}}
  94
  95 Removes a curve from the window and delete is on screen. This does not
  96 delete the actual curve. If the curve removed was the current curve,
  97 the current curve will be set to NULL.
  98
  99 \membersection{wxPlotWindow::Move}\label{wxplotwindowmove}
 100
 101 \func{void}{Move}{\param{wxPlotCurve* }{curve}, \param{int }{pixels\_up}}
 102
 103 Move the curve {\tt curve} up by {\tt pixels\_up} pixels. Down if the
 104 value is negative.
 105
 106 \membersection{wxPlotWindow::Enlarge}\label{wxplotwindowenlarge}
 107
 108 \func{void}{Enlarge}{\param{wxPlotCurve* }{curve}, \param{double }{factor}}
 109
 110 Changes the representation of the given curve. A {\tt factor} of more than
 111 one will stretch the curve vertically. The Y axis will change accordingly.
 112
 113 \membersection{wxPlotWindow::SetUnitsPerValue}\label{wxplotwindowsetunitspervalue}
 114
 115 \func{void}{SetUnitsPerValue}{\param{double }{upv}}
 116
 117 This sets the virtual untis per value. Normally, you will not be interested in
 118 what measured value you see, but what it stands for. If you want to display seconds
 119 on the X axis and the measuring device produced 50 values per second, set this
 120 value to 50. This will affect all curves being displayed.
 121
 122 \membersection{wxPlotWindow::GetUnitsPerValue}\label{wxplotwindowgetunitspervalue}
 123
 124 \func{double}{GetUnitsPerValue}{\void}
 125
 126 See \helpref{SetUnitsPerValue}{wxplotwindowsetunitspervalue}.
 127
 128 \membersection{wxPlotWindow::SetZoom}\label{wxplotwindowsetzoom}
 129
 130 \func{void}{SetZoom}{\param{double }{zoom}}
 131
 132 This functions zooms all curves in their horizontal dimension. The X axis will
 133 be changed accordingly.
 134
 135 \membersection{wxPlotWindow::GetZoom}\label{wxplotwindowgetzoom}
 136
 137 \func{double}{GetZoom}{\void}
 138
 139 See \helpref{SetZoom}{wxplotwindowsetzoom}.
 140
 141 \membersection{wxPlotWindow::RedrawEverything}\label{wxplotwindowredraweverything}
 142
 143 \func{void}{RedrawEverything}{\void}
 144
 145 Helper function which redraws both axes and the central area.
 146
 147 \membersection{wxPlotWindow::RedrawXAxis}\label{wxplotwindowredrawxaxis}
 148
 149 \func{void}{RedrawXAxis}{\void}
 150
 151 Helper function which redraws the X axis.
 152
 153 \membersection{wxPlotWindow::RedrawYAxis}\label{wxplotwindowredrawyaxis}
 154
 155 \func{void}{RedrawYAxis}{\void}
 156
 157 Helper function which redraws the Y axis.
 158
 159 \membersection{wxPlotWindow::SetScrollOnThumbRelease}\label{wxplotwindowsetscrollonthumbrelease}
 160
 161 \func{void}{SetScrollOnThumbRelease}{\param{bool}{ onrelease = TRUE}}
 162
 163 This function controls if the plot area will get scrolled only if the scrollbar thumb
 164 has been release or also if the thumb is being dragged. When displaying large amounts
 165 of data, it might become impossible to display the data fast enough to produce smooth
 166 scrolling and then this function should be called.
 167
 168 \membersection{wxPlotWindow::SetEnlargeAroundWindowCentre}\label{wxplotwindowsetenlargearoundwindowcentre}
 169
 170 \func{void}{SetEnlargeAroundWindowCentre}{\param{bool}{ aroundwindow = TRUE}}
 171
 172 Depending on the kind of data you display, enlarging the individual curves might
 173 have different desired effects. Sometimes, the data will be supposed to get enlarged
 174 with the fixed point being the origin, sometimes the fixed point should be the centre
 175 of the current drawing area. This function controls this behaviour.
 176