Hi,
I want to save some WCartesianChart as images but what I get as png file is a
chart but a black plot zone…(WCartesianChart rendering is fine)
I have wt-3.2.3, last haru-master from git and graphicsmagick-dev
1.4-0.020121013
I get some strange things when rendering in WRasterImage in output :
=====
attribute not recognized: i
attribute not recognized: n
attribute not recognized: f
attribute not recognized: e
attribute not recognized: e
attribute not recognized: e
attribute not recognized: e
=====
My source code is the following :
=================
int nbpts = xcor.size();
WStandardItemModel *model = new WStandardItemModel(nbpts, 2, parentContainer);
for (int i = 0; i < nbpts; ++i) {
model->setData(i, 0, xcor.at(i));
model->setData(i, 1, ycor.at(i));
}
WCartesianChart *chart = new WCartesianChart(parentContainer);
chart->initLayout();
chart->setModel(model); // set the model
chart->setXSeriesColumn(0); // set the column that holds the X data
chart->setLegendEnabled(true); // enable the legend
chart->setType(ScatterPlot); // set type to ScatterPlot
chart->axis(XAxis).setLocation(ZeroValue);
chart->axis(YAxis).setLocation(ZeroValue);
// Add the curves
WDataSeries s(1, CurveSeries, Y1Axis);
chart->addSeries(s);
chart->resize(300, 300); // WPaintedWidget must be given explicit size
Wt::WRasterImage pngImage("png", 600, 600);
Wt::WPainter p(&pngImage);
chart->paint(p);
std::string name;
name = WORKINGAREA+"/chart-"+sessionId ()+".png";
std::ofstream f(name.c_str(), std::ios::out |std::ios::trunc |
std::ios::binary);
pngImage.write(f);
=================
Any ideas ?
Cheers,
Laurent
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