Charts and automatic resizing

[Rafael Afonso]

Hello:

I am translating Chart chapter examples from Pro JavaFX 2 book to ScalaFX. As example it is the first code in the chapter, that uses PieChart:

package sandbox.javafx;

import javafx.application.Application;

import javafx.collections.FXCollections;

import javafx.collections.ObservableList;

import javafx.scene.Scene;

import javafx.scene.chart.PieChart;

import javafx.scene.chart.PieChart.Data;

import javafx.scene.layout.StackPane;

import javafx.stage.Stage;

public class ChartApp1 extends Application {

public static void main(String[] args) {

launch(args);

}

@Override

public void start(Stage primaryStage) {

PieChart pieChart = new PieChart();

pieChart.setData(getChartData());

primaryStage.setTitle("PieChart");

StackPane root = new StackPane();

root.getChildren().add(pieChart);

primaryStage.setScene(new Scene(root, 400, 250));

primaryStage.show();

}

private ObservableList<Data> getChartData() {

ObservableList<Data> answer = FXCollections.observableArrayList();

answer.addAll(new PieChart.Data("java", 17.56), new PieChart.Data("C",

17.06), new PieChart.Data("C++", 8.25), new PieChart.Data("C#",

8.20), new PieChart.Data("ObjectiveC", 6.8), new PieChart.Data(

"PHP", 6.0), new PieChart.Data("(Visual)Basic", 4.76),

new PieChart.Data("Other", 31.37));

return answer;

}

}

An now its ScalaFX Translation:

package sandbox.scalafx.chart

import scalafx.application.JFXApp

import scalafx.collections.ObservableBuffer

import scalafx.scene.chart.PieChart.Data.sfxPieChartData2jfx

import scalafx.scene.chart.PieChart

import scalafx.scene.layout.StackPane

import scalafx.scene.Scene

import scalafx.stage.Stage

object ChartApp1 extends JFXApp {

  stage = new Stage {

    title = "PieChart"

    width = 500

    height = 450

    scene = new Scene {

      content = new StackPane {

        content = new PieChart {

          data = ObservableBuffer(

            PieChart.Data("Java", 17.56),

            PieChart.Data("Scala", 17.06),

            PieChart.Data("C++", 8.25),

            PieChart.Data("C#", 8.20),

            PieChart.Data("ObjectiveC", 6.8),

            PieChart.Data("PHP", 6.0),

            PieChart.Data("(Visual)Basic", 4.76),

            PieChart.Data("Other", 31.37))

        }

      }

    }

  }

}

As you can see, ScalaFX is more compact than this original version. ;) Almost like JavaFX Script/Visage.

But I deected a problem: In JavaFx program, when I resize the stage, both chart and its respecive label resize too. But it does not happen in ScalaFX version! 

Probably in in some point of ScalaFX Chart or even in ScalaFX Node the binding between Chart and Stage dimentsions was lost. I will try investigate this issue. But some one has some idea about how to correct this?

P.S.: This is was not the only problem that I am having with charts. In other examples I had serious problems in conversion from JavaFX ObjectProperty<ObservableList<XYChart.Series<X,Y>>> to ScalaFX ObjectProperty[ObservableBuffer[XYChart.Series[X, Y]]], mainly when it involves java.lang.Number and Scala Int and Double. But i will explain this in other message.

Thanks,

Rafael U. C. Afonso

[Daniel Ferreira Monteiro Alves]

Good work Rafael! Give a look at the changes that I am doing on another branch (on my last post).

I need opinions. :P