protected void onScaleChanged() {
if (mapBackground != null && currentPoint != null) {
final double latitude = DataProvider.LATITUDE.getValue(currentPoint) + panLatitude;
final double longitude = DataProvider.LONGITUDE.getValue(currentPoint) + panLong;
super.onScaleChanged(
mapBackground.getScaleX(), mapBackground.getScaleY(latitude), longitude, latitude);
} else {
super.onScaleChanged();
}
final double widthInMeter =
Utils.distance(
getYAxis().minValue, getXAxis().maxValue, getYAxis().maxValue, getXAxis().maxValue);
if (widthInMeter < 1) {
scaleSizeInPixel = 0;
return;
}
final double availableLengthInMeter = widthInMeter * 0.9;
scaleConfiguration =
Preferences.getInstance().getUnitsConverter().getScaleDistance(availableLengthInMeter);
scaleSizeInPixel = (int) ((scaleConfiguration.lengthInSourceUnits / widthInMeter) * width);
}
protected void doPaintBackground(final Graphics g) {
if (mapBackground != null) {
mapBackground.paint(
g,
DataProvider.LONGITUDE.getValue(currentPoint) + panLong,
DataProvider.LATITUDE.getValue(currentPoint) + panLatitude,
(width - getMarginLeft() - getMarginRight()) / 2 + getMarginLeft(),
(height - getMarginTop() - getMarginBottom()) / 2 + getMarginTop());
}
}
