Bug #4510 » 0001-Chart-with-tooltip-layout-and-initial-zoom.patch
| examples/charts/ChartsExample.C | ||
|---|---|---|
|
#include <Wt/WBorderLayout>
|
||
|
#include <Wt/WFitLayout>
|
||
|
#include <Wt/WVBoxLayout>
|
||
|
#include <Wt/WStandardItem>
|
||
|
#include <Wt/WTableView>
|
||
| ... | ... | |
|
};
|
||
|
/*
|
||
|
* Handler to update tooltips on model changes
|
||
|
*/
|
||
|
void updateToolTip(WStandardItemModel *model, WStandardItem *item)
|
||
|
{
|
||
|
WString old_tip = item->toolTip();
|
||
|
WString new_tip = asString(model->headerData(item->column())) + ": "
|
||
|
+ asString(item->data(DisplayRole), "%.f");
|
||
|
if (old_tip != new_tip) {
|
||
|
item->setToolTip(new_tip);
|
||
|
}
|
||
|
}
|
||
|
/*
|
||
|
* Reads a CSV file as an (editable) standard item model.
|
||
|
*/
|
||
|
WAbstractItemModel *readCsvFile(const std::string &fname,
|
||
| ... | ... | |
|
for (int col = 0; col < model->columnCount(); ++col) {
|
||
|
model->item(row, col)->setFlags(ItemIsSelectable | ItemIsEditable);
|
||
|
/*
|
||
|
Example of tool tips (disabled here because they are not updated
|
||
|
when editing data)
|
||
|
*/
|
||
|
/*
|
||
|
WString toolTip = asString(model->headerData(col)) + ": "
|
||
|
+ asString(model->item(row, col)->data(DisplayRole), "%.f");
|
||
|
model->item(row, col)->setToolTip(toolTip);
|
||
|
*/
|
||
|
}
|
||
|
model->itemChanged().connect(boost::bind(updateToolTip, model, _1));
|
||
|
return model;
|
||
|
} else {
|
||
|
WString error(WString::tr("error-missing-data"));
|
||
| ... | ... | |
|
model->setData(i, 0, x);
|
||
|
model->setData(i, 1, sin(x));
|
||
|
WString toolTip = asString(model->item(i, 1)->data(DisplayRole), "%.2f");
|
||
|
model->item(i, 1)->setToolTip(toolTip);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Create the scatter plot.
|
||
|
*/
|
||
|
WCartesianChart *chart = new WCartesianChart(this);
|
||
|
WContainerWidget *holder = new WContainerWidget(this);
|
||
|
holder->setLayout(new WVBoxLayout());
|
||
|
WCartesianChart *chart = new WCartesianChart();
|
||
|
holder->layout()->addWidget(chart);
|
||
|
chart->setModel(model); // set the model
|
||
|
chart->setXSeriesColumn(0); // set the column that holds the X data
|
||
|
chart->setLegendEnabled(true); // enable the legend
|
||
| ... | ... | |
|
chart->setPanEnabled(true);
|
||
|
chart->setCrosshairEnabled(true);
|
||
|
chart->axis(XAxis).setZoom(2.0);
|
||
|
chart->axis(YAxis).setZoom(2.0);
|
||
|
chart->setBackground(WColor(200,200,200));
|
||
|
chart->setType(ScatterPlot); // set type to ScatterPlot
|
||
| ... | ... | |
|
chart->setAutoLayoutEnabled();
|
||
|
// Add the curves
|
||
|
WDataSeries s(1, CurveSeries);
|
||
|
WDataSeries s(1, PointSeries);
|
||
|
s.setShadow(WShadow(3, 3, WColor(0, 0, 0, 127), 3));
|
||
|
chart->addSeries(s);
|
||
|
chart->resize(800, 300); // WPaintedWidget must be given explicit size
|
||
|
holder->resize(800, 300);
|
||
|
chart->setMargin(10, Top | Bottom); // add margin vertically
|
||
|
chart->setMargin(WLength::Auto, Left | Right); // center horizontally
|
||
|
holder->setMargin(10, Top | Bottom); // add margin vertically
|
||
|
holder->setMargin(WLength::Auto, Left | Right); // center horizontally
|
||
|
ChartConfig *config = new ChartConfig(chart, this);
|
||
|
config->setValueFill(ZeroValueFill);
|
||