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Get Started Free →johannesrabauer/javafx-gestures-touch-input
Handle JavaFX gestures, pinch-to-zoom, panning, and multi-touch interaction with explicit transform ownership.
Passed 21 of 22 test cases with the skill, and 19 of 22 without it.
2 fixed19 passed either way1 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.
Our JavaFX application has grown from a basic image display component into a multi-layer canvas with rotation, multi-touch pinch-zoom, inertia, and multi-finger object manipulation. Custom event filters are becoming unmaintainable and buggy. What architectural approach should be taken when gesture coordination outgrows simple single-pane handlers?
| Checked | Without skill | With skill |
|---|---|---|
| Recommends using gesture libraries like GestureFX or TuioFX when gesture complexity increases | Missed | Passed |
The instructions your model reads when the skill loads.
Use this skill when the UI needs touch-aware interaction: zoomable viewports, pannable canvases, or multi-touch surfaces. Libraries such as GestureFX and TuioFX are useful once gestures become central to the product.
import javafx.application.ConditionalFeature;
import javafx.application.Platform;
import javafx.scene.image.ImageView;
import javafx.scene.input.ScrollEvent;
import javafx.scene.layout.StackPane;
public class ZoomPane extends StackPane {
public ZoomPane(ImageView imageView) {
getChildren().add(imageView);
addEventFilter(ScrollEvent.SCROLL, event -> {
if (!event.isControlDown()) {
return;
}
double factor = event.getDeltaY() > 0 ? 1.1 : 0.9;
imageView.setScaleX(imageView.getScaleX() * factor);
imageView.setScaleY(imageView.getScaleY() * factor);
event.consume();
});
if (Platform.isSupported(ConditionalFeature.INPUT_TOUCH)) {
setStyle("-fx-background-color: derive(cornflowerblue, 80%);");
}
}
}
test cases passed, vs 19 / 22 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.