examples-zoomlinechart.qdoc
22 lines
| 788 B
| text/plain
|
TextLexer
|
r919 | /*! | ||
\example examples/zoomlinechart | ||||
\title Zoom line example | ||||
\subtitle | ||||
The example shows how to create your own custom zooming effect with QRubberBand. | ||||
|
r971 | \image examples_zoomlinechart1.png | ||
\image examples_zoomlinechart2.png | ||||
|
r966 | |||
Let's first create a line series with some example data. | ||||
\snippet ../examples/zoomlinechart/main.cpp 1 | ||||
Then we create a custom chart view by deriving from QChartView: | ||||
\snippet ../examples/zoomlinechart/chartview.h 1 | ||||
We override mouse and key event handling | ||||
\snippet ../examples/zoomlinechart/chartview.h 2 | ||||
Then we implement a custom logic for mouse and key events. For example pressing '+' key will zoom in and pressing | ||||
the '-' key will zoom out. | ||||
\snippet ../examples/zoomlinechart/chartview.cpp 1 | ||||
|
r919 | */ | ||