private ArrayList<Integer> findZoomOptions() {
ArrayList<Integer> result = new ArrayList<>();
result.add(100);
final int screenDPI = app.getScreenDPI();
zoom100 = 1.0 * screenDPI / pageInfo.dpi;
int subsample = toSubsample(zoom100);
if (toZoom(subsample) / zoom100 > zoom100 / toZoom(subsample + 1)) subsample++;
zoom100 = toZoom(subsample);
if (zoom == 0) zoom = zoom100;
double z = zoom100;
for (int i = subsample + 1; i <= MAX_SUBSAMPLE; i++) {
double z2 = toZoom(i);
if (z / z2 > 1.2) {
z = z2;
result.add((int) (z / zoom100 * 100 + 0.5));
}
}
z = zoom100;
for (int i = subsample - 1; i >= 1; i--) {
double z2 = toZoom(i);
if (z2 / z > 1.2) {
z = z2;
result.add(0, (int) (z / zoom100 * 100 + 0.5));
}
}
return result;
}
