tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/internal/provisional/tmf/ui/views/timegraph2/swtjfx/examples/Example2.java

   1 package org.eclipse.tracecompass.internal.provisional.tmf.ui.views.timegraph2.swtjfx.examples;
   2
   3 import org.eclipse.jdt.annotation.NonNullByDefault;
   4
   5 import javafx.application.Application;
   6 import javafx.beans.value.ChangeListener;
   7 import javafx.beans.value.ObservableValue;
   8 import javafx.scene.Scene;
   9 import javafx.scene.canvas.Canvas;
  10 import javafx.scene.control.ScrollPane;
  11 import javafx.scene.layout.Pane;
  12 import javafx.stage.Stage;
  13
  14 @NonNullByDefault({})
  15 public class Example2 extends Application {
  16
  17     private static final double TEN_BILLIONS = 10000000000.0;
  18
  19     @Override
  20     public void start(Stage stage) {
  21 //        Node content = new Rectangle(1000, 700, Color.GREEN);
  22         Pane pane = new Pane();
  23         pane.setPrefSize(TEN_BILLIONS, TEN_BILLIONS);
  24         ScrollPane scrollPane = new ScrollPane(pane);
  25         scrollPane.setPrefSize(500, 300);
  26
  27         ChangeListener<Object> changeListener = new ChangeListener<Object>() {
  28             @Override
  29             public void changed(ObservableValue<? extends Object> observable, Object oldValue, Object newValue) {
  30                 System.out.println("source=" + observable.toString());
  31
  32                 double hmin = scrollPane.getHmin();
  33                 double hmax = scrollPane.getHmax();
  34                 double hvalue = scrollPane.getHvalue();
  35                 double contentWidth = pane.getLayoutBounds().getWidth();
  36                 double viewportWidth = scrollPane.getViewportBounds().getWidth();
  37
  38                 double hoffset =
  39                     Math.max(0, contentWidth - viewportWidth) * (hvalue - hmin) / (hmax - hmin);
  40
  41                 double vmin = scrollPane.getVmin();
  42                 double vmax = scrollPane.getVmax();
  43                 double vvalue = scrollPane.getVvalue();
  44                 double contentHeight = pane.getLayoutBounds().getHeight();
  45                 double viewportHeight = scrollPane.getViewportBounds().getHeight();
  46
  47                 double voffset =
  48                     Math.max(0,  contentHeight - viewportHeight) * (vvalue - vmin) / (vmax - vmin);
  49
  50                 System.out.printf("Offset: [%.1f, %.1f] width: %.1f height: %.1f %n",
  51                         hoffset, voffset, viewportWidth, viewportHeight);
  52             }
  53         };
  54         scrollPane.viewportBoundsProperty().addListener(changeListener);
  55         scrollPane.hvalueProperty().addListener(changeListener);
  56         scrollPane.vvalueProperty().addListener(changeListener);
  57
  58         /* Drawing on the region */
  59         Canvas canvas1 = new Canvas(100, 100);
  60         canvas1.relocate(TEN_BILLIONS - 100, 0);
  61         canvas1.getGraphicsContext2D().strokeOval(60, 60, 30, 30);
  62
  63         Canvas canvas2 = new Canvas(100, 100);
  64         canvas2.relocate(TEN_BILLIONS - 100, TEN_BILLIONS - 100);
  65         canvas2.getGraphicsContext2D().fillOval(60, 60, 30, 30);
  66
  67         pane.getChildren().addAll(canvas1, canvas2);
  68
  69         /* Showing the scene */
  70         Scene scene = new Scene(scrollPane, 640, 480);
  71         stage.setScene(scene);
  72
  73         stage.show();
  74     }
  75
  76     public static void main(String[] args) {
  77         launch(args);
  78     }
  79 }