本文整理汇总了Java中javafx.scene.canvas.Canvas.setOnKeyReleased方法的典型用法代码示例。如果您正苦于以下问题：Java Canvas.setOnKeyReleased方法的具体用法？Java Canvas.setOnKeyReleased怎么用？Java Canvas.setOnKeyReleased使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类javafx.scene.canvas.Canvas的用法示例。
在下文中一共展示了Canvas.setOnKeyReleased方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: start
import javafx.scene.canvas.Canvas; //导入方法依赖的package包/类
@Override
public void start(Stage stage) throws Exception {
Canvas canvas = new Canvas(CANVAS_WIDTH, CANVAS_HEIGHT);
ImageView imgView = new ImageView();
GraphicsContext ctx = canvas.getGraphicsContext2D();
model = ModelSerializer.restoreMultiLayerNetwork(new File("minist-model.zip"));
loader = new NativeImageLoader(28,28,1,true);
imgView.setFitHeight(100);
imgView.setFitWidth(100);
ctx.setLineWidth(10);
ctx.setLineCap(StrokeLineCap.SQUARE);
lblResult = new Label();
HBox hbBottom = new HBox(10, imgView, lblResult);
VBox root = new VBox(5, canvas, hbBottom);
hbBottom.setAlignment(Pos.CENTER);
root.setAlignment(Pos.CENTER);
Scene scene = new Scene(root, 520, 300);
stage.setScene(scene);
stage.show();
stage.setTitle("Handwritten digits recognition");
canvas.setOnMousePressed(e -> {
ctx.setStroke(Color.WHITE);
ctx.beginPath();
ctx.moveTo(e.getX(), e.getY());
ctx.stroke();
});
canvas.setOnMouseDragged(e -> {
ctx.setStroke(Color.WHITE);
ctx.lineTo(e.getX(), e.getY());
ctx.stroke();
});
canvas.setOnMouseClicked(e -> {
if (e.getButton() == MouseButton.SECONDARY) {
clear(ctx);
}
});
canvas.setOnKeyReleased(e -> {
if(e.getCode() == KeyCode.ENTER) {
BufferedImage scaledImg = getScaledImage(canvas);
imgView.setImage(SwingFXUtils.toFXImage(scaledImg, null));
try {
predictImage(scaledImg);
} catch (Exception e1) {
e1.printStackTrace();
}
}
});
clear(ctx);
canvas.requestFocus();
}