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Diffstat (limited to 'doc/src/examples-legendmarkers.qdoc')
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diff --git a/doc/src/examples-legendmarkers.qdoc b/doc/src/examples-legendmarkers.qdoc deleted file mode 100644 index 7dc85f11..00000000 --- a/doc/src/examples-legendmarkers.qdoc +++ /dev/null @@ -1,41 +0,0 @@ -/*! - \example examples/legendmarkers - \title LegendMarkers Example - \subtitle - - The example shows how to make use of legend markers. In this example we create an application which uses the QLegendMarker clicked signal to show/hide the corresponding series - in a chart. The connect marker button connects a clicked signal from all markers in a legend to the handleMarkerClicked slot. - - \image examples_legendmarkers.png - - Our application has buttons for adding or removing a series in a chart and a button to connect or disconnect the legend markers clicked signal to our handler. - In the image above we have connected the markers and clicked on one of them. - - \snippet ../examples/legendmarkers/mainwidget.cpp 1 - - Here we connect the markers in the legend to our handler. To avoid connecting the same marker more than once, we first disconnect it. - - \snippet ../examples/legendmarkers/mainwidget.cpp 2 - - Here we disconnect all markers from our handler. - - \snippet ../examples/legendmarkers/mainwidget.cpp 3 - - In our handler we first cast the sender of the event to the QLegendMarker. - - \snippet ../examples/legendmarkers/mainwidget.cpp 4 - - Then we check the type of the marker. This is required if we want to access the detailed methods of the marker and cast it to the correct type. - If all we need is the pointer to QAbstractSeries, the casting isn't necessary. In case of a pie or bar series, we may need the pointer to a related QPieSlice or QBarSet. - - \snippet ../examples/legendmarkers/mainwidget.cpp 5 - - We want to toggle the visibility of the series, when the marker is clicked. To do so, we get the pointer to a related series from the marker and toggle its visibility. - Since the legend marker follows the visibility of the series by default, we also set the marked back to visible. If we don't do so, the marker will be - invisible in the legend and we can't click on it anymore. - - \snippet ../examples/legendmarkers/mainwidget.cpp 6 - - Instead of making the marker invisible when the series is hidden, we dim the color of the marker. Here we do it by modifying the color of the laberBrush. - -*/ |