本文整理匯總了Java中javafx.scene.canvas.Canvas.relocate方法的典型用法代碼示例。如果您正苦於以下問題：Java Canvas.relocate方法的具體用法？Java Canvas.relocate怎麽用？Java Canvas.relocate使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類javafx.scene.canvas.Canvas的用法示例。
在下文中一共展示了Canvas.relocate方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: start
import javafx.scene.canvas.Canvas; //導入方法依賴的package包/類
@Override
public void start(Stage stage) {
// Node content = new Rectangle(1000, 700, Color.GREEN);
Pane pane = new Pane();
pane.setPrefSize(TEN_BILLIONS, TEN_BILLIONS);
ScrollPane scrollPane = new ScrollPane(pane);
scrollPane.setPrefSize(500, 300);
ChangeListener<Object> changeListener = new ChangeListener<Object>() {
@Override
public void changed(ObservableValue<? extends Object> observable, Object oldValue, Object newValue) {
System.out.println("source=" + observable.toString());
double hmin = scrollPane.getHmin();
double hmax = scrollPane.getHmax();
double hvalue = scrollPane.getHvalue();
double contentWidth = pane.getLayoutBounds().getWidth();
double viewportWidth = scrollPane.getViewportBounds().getWidth();
double hoffset =
Math.max(0, contentWidth - viewportWidth) * (hvalue - hmin) / (hmax - hmin);
double vmin = scrollPane.getVmin();
double vmax = scrollPane.getVmax();
double vvalue = scrollPane.getVvalue();
double contentHeight = pane.getLayoutBounds().getHeight();
double viewportHeight = scrollPane.getViewportBounds().getHeight();
double voffset =
Math.max(0, contentHeight - viewportHeight) * (vvalue - vmin) / (vmax - vmin);
System.out.printf("Offset: [%.1f, %.1f] width: %.1f height: %.1f %n",
hoffset, voffset, viewportWidth, viewportHeight);
}
};
scrollPane.viewportBoundsProperty().addListener(changeListener);
scrollPane.hvalueProperty().addListener(changeListener);
scrollPane.vvalueProperty().addListener(changeListener);
/* Drawing on the region */
Canvas canvas1 = new Canvas(100, 100);
canvas1.relocate(TEN_BILLIONS - 100, 0);
canvas1.getGraphicsContext2D().strokeOval(60, 60, 30, 30);
Canvas canvas2 = new Canvas(100, 100);
canvas2.relocate(TEN_BILLIONS - 100, TEN_BILLIONS - 100);
canvas2.getGraphicsContext2D().fillOval(60, 60, 30, 30);
pane.getChildren().addAll(canvas1, canvas2);
/* Showing the scene */
Scene scene = new Scene(scrollPane, 640, 480);
stage.setScene(scene);
stage.show();
}