so, there are at least 2 solutions for this :
1) the quick is just to modify the PLplot source code , in the call to
void wxPLplotstream::Create
comment the call to
//init();
then in our app code , do the init() call after Create() . as
~~~
bool wxAppPlot::OnInit()
{
wxPLplotwindow<wxFrame> *frame = new wxPLplotwindow<wxFrame>();
frame->Create(NULL, wxID_ANY, wxT("wxPLplot"),
wxDefaultPosition,
wxSize(900, 700));
frame->Show();
//set background color (0) to white RGB(255,255,255)
//must be called before plinit()
plscolbg(255, 255, 255);
wxPLplotstream* pls = frame->GetStream();
pls->init();
//change color (0) to black RGB(0, 0, 0)
//must be called after plinit()
plscol0(0, 0, 0, 0);
Plot(frame);
return true;
}
~~~
since it seems the only way to modiy the background color is to do the above
sequence
this is a change that I recommend to be included in the libray, since I believe
the other drivers require a call to init() too, but not the wxWidgets driver.
2) not modifying the source code. In this case , I think it should be possible
to derive 2 classes ,
a) one from wxPLplotwindow
b) other from wxPLplotwindow
then do everything in those classes as now except the call to init()
but if the developers could do option 1) that probably would be the best
thanks
-Pedro
----- Original Message -----
From: Pedro Vicente
To: plplot-gene...@lists.sourceforge.net
Sent: Wednesday, October 05, 2016 6:42 PM
Subject: [Plplot-general] wxWidgets driver -- change the default
blackbackground
Hi
I am trying to change the default black background color using the wxWidgets
driver
If using the SVG driver this can be done as explained here
https://sourceforge.net/p/plplot/mailman/message/2817799/
the trick being calling
plscolbg()
before
plinit();
like the sample code below marked "SVG Driver" does
However for the wxWidegts driver , it seems we do not do a call to
plinit();
but rather this is done inside the C++ stream initialization
From the wxWidgets PLplot sample below
the
plinit();
is made inside
frame->Create(NULL, wxID_ANY, wxT("wxPLplot"));
so I don't find a way to call the plscolbg() function before
How can this be accomplished ?
I also tried to modify the default colors of the default palette
cmap0_default.pal
16
#000000
so that the first is white
this does work *but* only after the window is redrawn (it first shows the
default red on black);
this seems like a bug to me
Also, what's the call to increase the font size?
On the wxWidgets driver the font looks tiny
Thanks !
Sample code wxWidgets
bool wxAppPlot::OnInit()
{
wxPLplotwindow<wxFrame> *frame = new wxPLplotwindow<wxFrame>();
frame->Create(NULL, wxID_ANY, wxT("wxPLplot"));
frame->Show();
Plot(frame);
return true;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
//Plot
/////////////////////////////////////////////////////////////////////////////////////////////////////
template< class WXWINDOW >
void Plot(wxPLplotwindow<WXWINDOW> *plotwindow)
{
wxPLplotstream* pls = plotwindow->GetStream();
//render
plotwindow->RenewPlot();
}
Sample code SVG driver
void atms_dwell_granu_t::plot()
{
//set SVG device and output file name
plsdev("svg");
plsfnam("atms_dwell_granu.svg");
//set background color (0) to white RGB(255,255,255)
//must be called before plinit()
plscolbg(255, 255, 255);
//initialize plplot
plinit();
//change color (0) to black RGB(0, 0, 0)
//must be called after plinit()
plscol0(0, 0, 0, 0);
/////////////////////////////////////////////////////////////////////////////////////////////////////
//render
/////////////////////////////////////////////////////////////////////////////////////////////////////
PLFLT xmin, xmax, ymin, ymax;
PLFLT *x, *y;
const int NSIZE = iOrbit_all;
xmin = 0;
xmax = NSIZE;
ymin = -1.0;
ymax = 6.0;
x = new PLFLT[NSIZE];
y = new PLFLT[NSIZE];
plcol0(0);
plenv(xmin, xmax, ymin, ymax, 0, 0);
pllab("", "Current (Amps)", "Scan Drive Main Motor Current");
//time axis
for (int idx_orb = 0; idx_orb < NSIZE; idx_orb++)
{
x[idx_orb] = idx_orb;
}
//mean
for (int idx_orb = 0; idx_orb < NSIZE; idx_orb++)
{
y[idx_orb] = DWELL_SAMPLE_APID517_Orbit[0][TLM_NUM_ORBIT - 1][idx_orb];
}
plpoin(NSIZE, x, y, 46);
plend();
delete[] x;
delete[] y;
}
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