examples-zoomlinechart.qdoc
22 lines
| 786 B
| text/plain
|
TextLexer
Jani Honkonen
|
r919 | /*! | ||
| \example examples/zoomlinechart | ||||
| \title Zoom line example | ||||
| \subtitle | ||||
| The example shows how to create your own custom zooming effect with QRubberBand. | ||||
Tero Ahola
|
r966 | \image example_zoomlinechart1.png | ||
| \image example_zoomlinechart2.png | ||||
| 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 | ||||
|
Jani Honkonen
|
r919 | */ | ||