2018년 10월 7일 일요일

[JavaFx] Simple Comics Viewer



1. Comics.java
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package app.comics;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.ComboBox;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.Label;
import javafx.scene.control.ToggleButton;
import javafx.scene.control.TreeView;
import javafx.scene.input.KeyCode;
import javafx.stage.Stage;
import lib.fx.FxContextMenu;
import lib.fx.FxToast;
import lib.fxapp.FxRunnable;
import lib.fxapp.FxWindow;
import lib.java.ZipUtil;

public class Comics extends Application {
    
    final int fontSize = 20; 
    final String baseFolder = "comics";
    FxWindow window;
    Stage mainStage;
    TreeView<String> fileTree;
    ComboBox<String> pageComboBox;
    File folder;
    List<byte[]> images;
    int imagesIndex;
    ToggleButton sideMenuTobble;
    ToggleButton scrollBarToggle;
    ToggleButton fullScreenToggle;
    
    ComicsImageView comicsImageView;
    
    @Override
    public void start(Stage stage) {
        mainStage = stage;
        initialize(stage);
        window.setMainTitle(stage, "ComicsViewer V0.0.1");
        window.setMainIcon(stage,  "/res/32/comments.png");

        Scene scene = new Scene(window.getMainWindow(), 800, 600);
        stage.setScene(scene);
        stage.show();
    }
    
    public static void main(String[] args) {
        launch(args);
    }
    
    void initialize(Stage stage) {
        window = new FxWindow(stage);
        //window.hideWindowBorder(stage);
        window.setStatusTextSize(fontSize);
        
        images = new ArrayList<>();
        imagesIndex = 0;
        folder = new File(window.getWorkingFolder() + "/" + baseFolder);
        if( folder.exists() == false ) {
            folder.mkdirs();
        }

        fileTree = window.getTreeFileView(folder.getPath(), fontSize, runnableTreeView);
        fileTree.setShowRoot(false);
        fileTree.getRoot().setExpanded(true);
        window.setLeftWindow(fileTree);
        
        comicsImageView = new ComicsImageView(fontSize, runnableComicsImageView);
        comicsImageView.setContextMenu(makeContextMenu());

        makeStatusBar();
        
        window.setMainWindow(comicsImageView.getView());
    }

    void makeStatusBar() {
        pageComboBox = window.getComboBox( fontSize, () -> {
            gotoPage();
        });
        sideMenuTobble = window.getToggleImageButton("/res/32/side_menu.png", () -> setSideMenu());
        sideMenuTobble.setSelected(true);
        scrollBarToggle = window.getToggleImageButton("/res/32/statusbar.png", () -> setScrollBar());
        scrollBarToggle.setSelected(true);
        fullScreenToggle = window.getToggleImageButton("/res/32/expand.png", () -> setFullScreen());
        fullScreenToggle.setSelected(false);
        
        window.addToStatusBar( sideMenuTobble );
        window.addToStatusBar( scrollBarToggle );
        window.addToStatusBar( fullScreenToggle );
        window.addToStatusBar( window.getImageButton("/res/32/first.png", () -> firstPage()) );
        window.addToStatusBar( window.getImageButton("/res/32/back.png", () -> prevPage()) );
        window.addToStatusBar( pageComboBox );        
        window.addToStatusBar( window.getImageButton("/res/32/forward.png", () -> nextPage()) );
        window.addToStatusBar( window.getImageButton("/res/32/last.png", () -> lastPage()) );
        window.addToStatusBar( new Label(" ") );
    }
    
    
    public void setSideMenu() {
        if( sideMenuTobble.isSelected() ) {
            window.setLeftWindow(fileTree);
        } else {
            window.setLeftWindow(null);
        }
    }
    
    public void toggleSideMenu() {
        if( sideMenuTobble.isSelected() ) {
            sideMenuTobble.setSelected(false);
        } else {
            sideMenuTobble.setSelected(true);
        }
        setSideMenu();
    }
    
    public void setScrollBar() {
        if( scrollBarToggle.isSelected() ) {
            comicsImageView.showScrollBar();
        } else {
            comicsImageView.hideScrollBar();
        }
    }

    public void toggleScrollBar() {
        if( scrollBarToggle.isSelected() ) {
            scrollBarToggle.setSelected(false);
        } else {
            scrollBarToggle.setSelected(true);
        }
        setScrollBar();
    }
    
    public void setFullScreen() {
        if( fullScreenToggle.isSelected() ) {
            window.fullScreen(true);
        } else {
            window.fullScreen(false);
        }
    }
    
    public void toggleFullScreen() {
        if( fullScreenToggle.isSelected() ) {
            fullScreenToggle.setSelected(false);
        } else {
            fullScreenToggle.setSelected(true);
        }
        setFullScreen();
    }


    ContextMenu makeContextMenu() {
        
        FxContextMenu menu = new FxContextMenu(fontSize);
        
        menu.addMenu("화면 제어");
        {
            menu.addMenuItem( "전체화면 확대/복귀", new Runnable() {
                @Override public void run() {
                    toggleFullScreen();    
                }
            });
            menu.addMenuItem( "왼쪽 메뉴 보이기/감추기", new Runnable() {
                @Override public void run() {
                    toggleSideMenu();
                }
            });
            menu.addMenuItem( "스크롤바 보이기/감추기", new Runnable() {
                @Override public void run() {
                    toggleScrollBar();
                }
            });
        }
        
        menu.addRootMenuItem(null, null);
        menu.addRootMenuItem( "프로그램 종료", new Runnable() {
            @Override public void run() {
                System.exit(0);
            }
        });
        
        return menu.getMenu();
    }
    
    public void loadComicsFile(String filePath) throws Exception {
        System.out.println(filePath);
        if( new File(filePath).isFile() ) {
            images = ZipUtil.unzipToByteArray(filePath);            
            pageComboBox.getItems().clear();
            for( int i = 0; i < images.size(); i++ ) {
                pageComboBox.getItems().add( String.valueOf(i+1));
            }
            firstPage();
        }
    }

    public void setImage(int index) {
        comicsImageView.setImage(images.get(index));
        window.setStatusText(fileTree.getSelectionModel().getSelectedItem().getValue() 
                + " [ " + (index+1) + " / " + images.size() + " ] ");
    }
    
    public void firstPage() {
        imagesIndex = 0;
        pageComboBox.getSelectionModel().selectFirst();
    }
    
    public void lastPage() {
        imagesIndex = images.size() - 1;
        pageComboBox.getSelectionModel().selectLast();
    }
        
    public void nextPage() {
        if( imagesIndex < (images.size()-1) ) {
            imagesIndex++;
            pageComboBox.getSelectionModel().select(imagesIndex);
        } else {
            FxToast.makeText(mainStage, "마지막 페이지 입니다", 1000);
        }
    }
    
    public void prevPage() {
        if( imagesIndex > 0 ) {
            imagesIndex--;
            pageComboBox.getSelectionModel().select(imagesIndex);
        } else {
            FxToast.makeText(mainStage, "첫 페이지 입니다", 1000);
        }
    }
    
    public void gotoPage() {
        int index  = pageComboBox.getSelectionModel().getSelectedIndex();
        if( index >= 0 && index <= (images.size()-1) ) {
            imagesIndex = index;
            setImage(imagesIndex);
        }
    }
    
    Runnable runnableExit = new Runnable() {
        @Override public void run() {
            if( window.yesno("Exit", "Do you want exit progrma ?") ) { System.exit(0); }
        }
    };  

    Runnable runnableTreeView = new Runnable() {
        @Override public void run() {
            try {
                loadComicsFile(window.getSelectedTreePath(fileTree));
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    };

    FxRunnable runnableComicsImageView = new FxRunnable() {
        @Override public void run(Object... object) {
            if( images != null ) {
                KeyCode e = (KeyCode)object[0];        

                if ( e.equals(KeyCode.UP) ) {
                    System.out.println("Up Pressed");
                }
                if ( e.equals(KeyCode.DOWN) ) {
                    System.out.println("Down Pressed");
                }
                if ( e.equals(KeyCode.RIGHT) ) {
                    System.out.println("Right Pressed");
                    nextPage();
                }
                if ( e.equals(KeyCode.LEFT) ) {
                    System.out.println("Left Pressed");
                    prevPage();
                }
                if ( e.equals(KeyCode.PAGE_UP) ) {
                    System.out.println("PageUp Pressed");
                }
                if ( e.equals(KeyCode.PAGE_DOWN) ) {
                    System.out.println("PageDown Pressed");
                }
                if ( e.equals(KeyCode.HOME) ) {
                    System.out.println("Home Pressed");
                }
                if ( e.equals(KeyCode.END) ) {
                    System.out.println("End Pressed");
                }
                if ( e.equals(KeyCode.ENTER) ) {
                    System.out.println("Enter Pressed");
                }

            }
        }
    };
    
}


2. ComicsImageView.java
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package app.comics;

import java.io.ByteArrayInputStream;

import javafx.application.Platform;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.geometry.Pos;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.Label;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.ScrollPane.ScrollBarPolicy;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.input.KeyCode;
import javafx.scene.input.MouseButton;
import javafx.scene.layout.StackPane;
import lib.fxapp.FxRunnable;

public class ComicsImageView {

    ImageView imageView;
    ScrollPane imagePane;
    Label glassText;
    StackPane glassView;
    StackPane layout;
    
    
    public ComicsImageView(int fontSize, FxRunnable runnable) {
    
        imageView = new ImageView(); //new Image(new File("D:/a.png").toURI().toString())
        imageView.setPreserveRatio(true);
        imageView.setPickOnBounds(true);
        imageView.setOnMouseMoved(e -> {
            if ( e.getX() < imagePane.getWidth() / 4 || e.getX() > imagePane.getWidth() * 3 / 4 ) {
                if ( e.getX() < imagePane.getWidth() / 4 ) {
                    Platform.runLater(() ->glassText.setText("<"));
                    StackPane.setAlignment(glassView, Pos.TOP_LEFT);
                } else {
                    Platform.runLater(() ->glassText.setText(">"));
                    StackPane.setAlignment(glassView, Pos.TOP_RIGHT);
                }
                glassView.setMaxWidth(imagePane.getWidth() / 4);
                glassView.setMaxHeight(imagePane.getHeight());
                glassView.setVisible(true);
            } else {
                glassView.setVisible(false);
            }
            e.consume();
        });
        imageView.setOnMouseClicked( e-> {
            if( e.getButton().equals(MouseButton.PRIMARY) ) {
                runnable.run(KeyCode.RIGHT);
            }
        });
        
        imagePane = new ScrollPane();
        imagePane.setPannable(true);
        if( fontSize > 0 ) {
            imagePane.setStyle("-fx-font-size: " + fontSize + " pt;");
        }
        imageView.fitWidthProperty().bind(imagePane.widthProperty());
        imagePane.setContent(imageView);
        imagePane.vvalueProperty().addListener(new ChangeListener<Number>() {
            public void changed(ObservableValue<? extends Number> ov,
            Number old_val, Number new_val) {
                if ( new_val.equals(1.0) ) {
                    //runnable.run(KeyCode.RIGHT);
                }
                if ( new_val.equals(0.0) ) {
                    //runnable.run(KeyCode.LEFT);
                }
            }
        });
        
        imagePane.setOnKeyPressed(e -> {
            runnable.run(e.getCode());
        });

        glassText = new Label("");
        glassText.setStyle("-fx-text-fill: goldenrod; -fx-font: italic 20 \"serif\"; -fx-padding: 0 0 20 0; -fx-text-alignment: center");
    
        glassView = new StackPane();
        StackPane.setAlignment(glassText, Pos.CENTER);
        glassView.getChildren().addAll(glassText);
        glassView.setStyle("-fx-background-color: rgba(0, 50, 100, 0.1); -fx-background-radius: 10;");
        glassView.setLayoutX(0);
        glassView.setLayoutY(0);
        glassView.setPrefWidth(imageView.getFitWidth() / 4);
        glassView.setPrefHeight(imageView.getFitHeight());
        glassView.setVisible(false);
        glassView.setOnMouseClicked( e-> {
            if ( glassText.getText().equals(">") ) {
                runnable.run(KeyCode.RIGHT);
            } else {
                runnable.run(KeyCode.LEFT);
            }
        });

        glassView.focusedProperty().addListener(new ChangeListener<Boolean>() {
            @Override public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
                if( ! newValue.booleanValue() ) {
                    glassView.setVisible(false);
                }
            }
        });
        
        layout = new StackPane();
        StackPane.setAlignment(glassView, Pos.TOP_LEFT);
        layout.getChildren().addAll(imagePane, glassView);
        layout.setStyle("-fx-background-color: silver; -fx-padding: 1;");
    }    
    
    public StackPane getView() {
        return layout;
    }
    
    public void setImage(byte[] image) {
        System.out.println("ComicsImageView.setImage()");
        imageView.setImage(new Image(new ByteArrayInputStream(image)));
        imagePane.setVvalue(0.0);  
    }
    
    public void setContextMenu(ContextMenu menu) {
        System.out.println("ComicsImageView.setContextMenu()");
        imagePane.setContextMenu(menu);
    }
    
    public void hideScrollBar() {
        imagePane.setHbarPolicy(ScrollBarPolicy.NEVER);
        imagePane.setVbarPolicy(ScrollBarPolicy.NEVER);
    }

    public void showScrollBar() {
        imagePane.setHbarPolicy(ScrollBarPolicy.AS_NEEDED);
        imagePane.setVbarPolicy(ScrollBarPolicy.AS_NEEDED);
    }
    
    public void clearGlassView() {
        glassView.setVisible(false);
    }
}


3. FxContextMenu.java
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package lib.fx;

import javafx.scene.control.ContextMenu;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuItem;
import javafx.scene.control.SeparatorMenuItem;

public class FxContextMenu {

    ContextMenu rootMenu;
    Menu currMenu;
    int fontSize = 12;
    
    public FxContextMenu(int fontsize) {
        rootMenu = new ContextMenu();
        currMenu = null;
        fontSize = fontsize;
    }
    
    public FxContextMenu() {
        this(12);
    }
    
    public ContextMenu getMenu() {
        return rootMenu;
    }
    
    public void addMenu(String text) {
        currMenu = new Menu(text);
        currMenu.setStyle("-fx-font-size: " + fontSize + " pt;");
        rootMenu.getItems().add(currMenu);
    }
    
    public void addMenuItem(Menu menu, String text, Runnable runnable) {
        MenuItem item;
        if( text != null ) {
            item = new MenuItem(text);
            if( runnable != null ) {
                item.setOnAction(e -> runnable.run());
            }
        } else {
            item = new SeparatorMenuItem();
        }
        if( fontSize > 0 ) {
            item.setStyle("-fx-font-size: " + fontSize + " pt;");
        }
        if( menu != null ) {
            menu.getItems().add(item);
        } else {
            rootMenu.getItems().add(item);
        }
    }
    
    public void addMenuItem(String text, Runnable runnable) {
        addMenuItem( currMenu, text, runnable );
    }
    
    public void addRootMenuItem(String text, Runnable runnable) {
        currMenu = null;
        addMenuItem( currMenu, text, runnable );        
    }
}


4. ZipUtil.java

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package lib.java;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

public class ZipUtil {
    public static List<byte[]> unzipToByteArray(String fileName) throws Exception {
        byte[] buffer = new byte[1024];
        List<byte[]> files = new ArrayList<>();
        File file = new File(fileName);
        //System.out.println(file.getPath());
        ZipInputStream zis = new ZipInputStream(new FileInputStream(file));
        ZipEntry zipEntry = zis.getNextEntry();
        while( zipEntry != null ){
            String fname = zipEntry.getName();
            //System.out.println(fname);
            ByteArrayOutputStream fos = new ByteArrayOutputStream();
            int len;
            while ((len = zis.read(buffer)) > 0) {
                fos.write(buffer, 0, len);
            }
            fos.close();
            files.add(fos.toByteArray());
            zipEntry = zis.getNextEntry();
        }
        zis.closeEntry(); //for java.util.Zip
        zis.close();
        return files;
    }
    
    public static void unzipToFoler(File file, File foler) throws IOException {
        byte[] buffer = new byte[1024];
        ZipInputStream zis = new ZipInputStream(new FileInputStream(file));
        ZipEntry zipEntry = zis.getNextEntry();
        while( zipEntry != null ){
            String fileName = zipEntry.getName();
            File newFile = new File(foler, fileName);
            FileOutputStream fos = new FileOutputStream(newFile);
            int len;
            while ((len = zis.read(buffer)) > 0) {
                fos.write(buffer, 0, len);
            }
            fos.close();
            zipEntry = zis.getNextEntry();
        }
        zis.closeEntry();
        zis.close();
    }
}



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