PDFGraphicsContextViewer.java

import java.awt.Color;
import java.io.IOException;

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.rendering.PDFRenderer;
import org.jfree.fx.FXGraphics2D;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;

public class PDFGraphicsContextViewer extends Application {

	public static void main(String[] args) {
		launch(args);
	}

	int pdfScale = 1;

	@Override
	public void start(Stage primaryStage) throws Exception {
		int width = 590;
		int height = 840;

		PDDocument doc = PDDocument.load(PDFGraphicsContextViewer.class.getResourceAsStream("sample.pdf"));
		Pane pane = new Pane();

		Canvas canvas = new Canvas();
		canvas.setWidth(width);
		canvas.setHeight(height);
		renderPdf(canvas, doc);
		pane.getChildren().add(canvas);

		Scene scene = new Scene(pane, width, height);
		primaryStage.setTitle(getClass().getName());
		primaryStage.setScene(scene);
		primaryStage.show();
	}

	protected void renderPdf(Canvas canvas, PDDocument doc) throws IOException {
		PDFRenderer renderer = new PDFRenderer(doc);
		//canvasからGraphicsContxtを取得して、FXGraphics2Dをインスタンス化
		FXGraphics2D g2 = new FXGraphics2D(canvas.getGraphicsContext2D());
		g2.clearRect(0, 0, (int) canvas.getWidth(), (int) canvas.getHeight());
		
		//PDFのレンダリング。rendererの描画処理は直接canvasに対して行われます
		renderer.renderPageToGraphics(0, g2, pdfScale);
	}
}