src/main/java/com/example/lab3/ImageController.java - master - Shalva/Lab3_SlideNavigationTool

src/main/java/com/example/lab3/ImageController.java
154 строки5 KB
Kvaratskheliia Shalva
Добавлен исходный код проекта Lab3_SlideNavigationTool
14 июн 2026, 17:20
14 июн 2026, 17:20781cb59
package com.example.lab3;

import javafx.animation.FadeTransition;
import javafx.animation.KeyFrame;
import javafx.animation.ScaleTransition;
import javafx.animation.Timeline;
import javafx.fxml.FXML;
import javafx.scene.control.*;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.StackPane;
import javafx.stage.DirectoryChooser;
import javafx.util.Duration;
import java.io.File;

public class ImageController {

    @FXML private ImageView imageView;
    @FXML private Label counterLabel;
    @FXML private ComboBox<String> filterComboBox;
    @FXML private ComboBox<String> animationComboBox;
    @FXML private TextArea exifTextArea;
    @FXML private Button playButton;
    @FXML private StackPane imageContainer;

    private File currentDirectory;
    private ImageCollection imageCollection = new ImageCollection();
    private ImageIterator iterator;
    private Timeline slideshowTimeline;
    private boolean isPlaying = false;

    @FXML
    public void initialize() {
        filterComboBox.getItems().addAll("Все", "JPEG/JPG", "PNG", "GIF");
        filterComboBox.getSelectionModel().selectFirst();

        animationComboBox.getItems().addAll("Исчезание", "Масштабирование", "Без эффекта");
        animationComboBox.getSelectionModel().selectFirst();

        setupSlideshow();
    }

    @FXML
    private void handleSelectFolder() {
        DirectoryChooser chooser = new DirectoryChooser();
        chooser.setTitle("Выберите папку с изображениями");
        File selected = chooser.showDialog(imageView.getScene().getWindow());
        if (selected != null) {
            currentDirectory = selected;
            updateIterator();
        }
    }

    @FXML private void handleFilterChange() { updateIterator(); }
    @FXML private void handleNext() { if (iterator != null) playTransition(iterator.next()); }
    @FXML private void handlePrevious() { if (iterator != null) playTransition(iterator.previous()); }
    @FXML private void handleFirst() { if (iterator != null) playTransition(iterator.first()); }
    @FXML private void handleLast() { if (iterator != null) playTransition(iterator.last()); }

    private void updateIterator() {
        if (currentDirectory == null) return;
        String filter = filterComboBox.getValue();
        iterator = imageCollection.getIterator(currentDirectory, filter);

        if (iterator != null && iterator.getTotalCount() > 0) {
            displayImage(iterator.first());
        } else {
            clearViewer();
        }
    }

    private void displayImage(File file) {
        if (file == null) {
            clearViewer();
            return;
        }
        Image img = new Image(file.toURI().toString());
        imageView.setImage(img);
        counterLabel.setText((iterator.getIndex() + 1) + " из " + iterator.getTotalCount());
        exifTextArea.setText(ExifReaderUtil.getExifInfo(file));
    }

    private void playTransition(File nextFile) {
        if (nextFile == null) return;

        String animType = animationComboBox.getValue();
        if ("Без эффекта".equals(animType)) {
            displayImage(nextFile);
            return;
        }

        if ("Исчезание".equals(animType)) {
            FadeTransition fadeOut = new FadeTransition(Duration.millis(300), imageView);
            fadeOut.setFromValue(1.0);
            fadeOut.setToValue(0.0);
            fadeOut.setOnFinished(e -> {
                displayImage(nextFile);
                FadeTransition fadeIn = new FadeTransition(Duration.millis(300), imageView);
                fadeIn.setFromValue(0.0);
                fadeIn.setToValue(1.0);
                fadeIn.play();
            });
            fadeOut.play();
        } else if ("Масштабирование".equals(animType)) {
            ScaleTransition scaleOut = new ScaleTransition(Duration.millis(300), imageView);
            scaleOut.setToX(0.0);
            scaleOut.setToY(0.0);
            scaleOut.setOnFinished(e -> {
                displayImage(nextFile);
                ScaleTransition scaleIn = new ScaleTransition(Duration.millis(300), imageView);
                scaleIn.setFromX(0.0);
                scaleIn.setFromY(0.0);
                scaleIn.setToX(1.0);
                scaleIn.setToY(1.0);
                scaleIn.play();
            });
            scaleOut.play();
        }
    }

    private void clearViewer() {
        imageView.setImage(null);
        counterLabel.setText("0 из 0");
        exifTextArea.setText("В данной папке нет файлов, соответствующих фильтру.");
        if (isPlaying) stopSlideshow();
    }

    @FXML
    private void handleToggleSlideshow() {
        if (iterator == null || iterator.getTotalCount() == 0) return;
        if (isPlaying) {
            stopSlideshow();
        } else {
            startSlideshow();
        }
    }

    private void setupSlideshow() {
        slideshowTimeline = new Timeline(new KeyFrame(Duration.seconds(3), event -> handleNext()));
        slideshowTimeline.setCycleCount(Timeline.INDEFINITE);
    }

    private void startSlideshow() {
        isPlaying = true;
        playButton.setText("Стоп");
        slideshowTimeline.play();
    }

    private void stopSlideshow() {
        isPlaying = false;
        playButton.setText("Автопросмотр");
        slideshowTimeline.stop();
    }
}