Hi Phil, Alan
This solution worked for me, thanks
> The easiest way to do this at the moment is something like
>
> wxPLplotstream* pls = plotwindow->GetStream();
> pls->adv( 0 );
> pls->scolbg(255, 255, 255);
> pls->clear();
> //rest of your plotting code
> I'm very open to better ways
> to do this if you have suggestions.
The only suggestion I have is the one I sent on my previous mail, that
was *not* to have
wxPLplotstream::Create
call
init()
and let the user do that on his application.
By looking at the samples, I believe they all call plinit() at start,
my complete test code is now
#include "wx/wxprec.h"
#include "wx/wx.h"
#include "wxPLplotwindow.h"
template< class WXWINDOW >
void Plot(wxPLplotwindow<WXWINDOW> *plotwindow);
/////////////////////////////////////////////////////////////////////////////////////////////////////
//wxAppPlot
/////////////////////////////////////////////////////////////////////////////////////////////////////
class wxAppPlot : public wxApp
{
public:
virtual bool OnInit();
};
IMPLEMENT_APP(wxAppPlot)
bool wxAppPlot::OnInit()
{
wxPLplotwindow<wxFrame> *frame = new wxPLplotwindow<wxFrame>();
frame->Create(NULL, wxID_ANY, wxT("wxPLplot"),
wxDefaultPosition,
wxSize(900, 700));
frame->Show();
Plot(frame);
return true;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
//Plot
/////////////////////////////////////////////////////////////////////////////////////////////////////
template< class WXWINDOW >
void Plot(wxPLplotwindow<WXWINDOW> *plotwindow)
{
wxPLplotstream* pls = plotwindow->GetStream();
pls->adv(0);
pls->scolbg(255, 255, 255);
pls->clear();
//render
const int NSIZE = 101;
PLFLT x[NSIZE], y[NSIZE];
PLFLT xmin = 0, xmax = 100, ymin = 0, ymax = 10;
for (int i = 0; i < NSIZE; i++)
{
x[i] = i;
y[i] = 5;
}
plschr(0, 1.0);
plcol0(8);
plenv(xmin, xmax, ymin, ymax, 0, 0);
pllab("x", "y", "Label");
plpoin(NSIZE, x, y, 46);
plotwindow->RenewPlot();
}
-Pedro
----- Original Message -----
From: "Phil Rosenberg" <p.d.rosenb...@gmail.com>
To: "Pedro Vicente" <pedro.vice...@space-research.org>
Cc: <plplot-gene...@lists.sourceforge.net>;
<plplot-devel@lists.sourceforge.net>
Sent: Thursday, October 06, 2016 5:55 AM
Subject: Re: [Plplot-devel] [Plplot-general] wxWidgets driver -- change the
default blackbackground
> Hi Pedro
> The easiest way to do this at the moment is something like
>
> wxPLplotstream* pls = plotwindow->GetStream();
> pls->adv( 0 );
> pls->scolbg(255, 255, 255);
> pls->clear();
> //rest of your plotting code
>
> If you have multiple subpages then you will need to do this on each
> page. Also if your subpages don't cover all the windows then you can
> call the SetBackgroundColour method of wxPLplotwindow and this will
> clear the whole window to the given colour initially.
>
> Hope that helps. If not then let me know. I'm very open to better ways
> to do this if you have suggestions.
>
> Phil
>
>
> On 6 October 2016 at 06:00, Pedro Vicente
> <pedro.vice...@space-research.org> wrote:
>>
>> 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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