zoomOut method
void
zoomOut()
Decreases the magnification of the plot area.
Implementation
void zoomOut() {
_stateProperties.canSetRangeController = true;
final SfCartesianChart chart = _stateProperties.chart;
final ZoomPanBehaviorRenderer zoomPanBehaviorRenderer =
_stateProperties.zoomPanBehaviorRenderer;
zoomPanBehaviorRenderer._zoomingBehaviorDetails.isZoomOut = true;
zoomPanBehaviorRenderer._zoomingBehaviorDetails.isZoomIn = false;
final double? zoomFactor =
zoomPanBehaviorRenderer._zoomingBehaviorDetails.zoomFactor;
ChartAxisRendererDetails axisDetails;
for (int index = 0;
index < _stateProperties.chartAxis.axisRenderersCollection.length;
index++) {
axisDetails = AxisHelper.getAxisRendererDetails(
_stateProperties.chartAxis.axisRenderersCollection[index]);
if ((axisDetails.orientation == AxisOrientation.vertical &&
chart.zoomPanBehavior.zoomMode != ZoomMode.x) ||
(axisDetails.orientation == AxisOrientation.horizontal &&
chart.zoomPanBehavior.zoomMode != ZoomMode.y)) {
if (axisDetails.zoomFactor < 1.0 && axisDetails.zoomFactor > 0.0) {
zoomPanBehaviorRenderer._zoomingBehaviorDetails
.setZoomFactorAndZoomPosition(
_stateProperties.chartState, axisDetails, zoomFactor);
axisDetails.zoomFactor = axisDetails.zoomFactor > 1.0
? 1.0
: (axisDetails.zoomFactor < 0.0 ? 0.0 : axisDetails.zoomFactor);
}
if (chart.onZooming != null) {
bindZoomEvent(chart, axisDetails, chart.onZooming!);
}
}
}
zoomPanBehaviorRenderer._zoomingBehaviorDetails.createZoomState();
}