design/designer-base/src/main/java/com/fr/design/mainframe/theme/TemplateThemeBlock.java

package com.fr.design.mainframe.theme;

import com.fr.base.GraphHelper;
import com.fr.base.theme.TemplateTheme;
import com.fr.base.theme.TemplateThemeConfig;
import com.fr.base.theme.settings.ThemeThumbnail;
import com.fr.design.designer.IntervalConstants;
import com.fr.design.file.HistoryTemplateListCache;
import com.fr.design.gui.ilable.UILabel;
import com.fr.design.layout.FRGUIPaneFactory;
import com.fr.design.mainframe.JTemplate;
import com.fr.design.mainframe.theme.dialog.TemplateThemeProfileDialog;
import com.fr.general.IOUtils;
import com.fr.general.locale.image.I18nImage;
import com.fr.stable.Constants;
import com.fr.stable.StringUtils;

import javax.swing.BorderFactory;
import javax.swing.Icon;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.Window;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

/**
 * @author Starryi
 * @version 1.0
 * Created by Starryi on 2021/8/13
 */
public class TemplateThemeBlock<T extends TemplateTheme> extends JPanel {
    public static final int INFO_HEIGHT = 30;
    public static final int CONTENT_WIDTH = ThemeThumbnail.WIDTH;
    public static final int CONTENT_HEIGHT = ThemeThumbnail.HEIGHT + INFO_HEIGHT;
    private static final Color HOVERING_BORDER_COLOR = new Color(65, 155, 249);

    private final String name;
    private final TemplateThemeConfig<T> config;
    private T theme;
    private final TemplateThemeProfilePane<T> profilePane;
    private final Icon theme4currentTemplateMarkIcon = IOUtils.readIcon("/com/fr/design/form/images/theme4currentTemplate.png");
    private final Icon theme4NewTemplateMarkIcon= IOUtils.readIcon("/com/fr/design/form/images/theme4newTemplate.png");
    private final Icon profileIcon = IOUtils.readIcon("/com/fr/design/icon/icon_edit.png");
    private final boolean displayTheme4NewTemplateMarker;

    private final ThumbnailPane thumbnailPane;
    // UIButton会影响Block的手势监听，这里使用UILabel代替，点击事件也有Block代为处理
    private UILabel profileButton;
    private boolean selected = false;
    private boolean hovering = false;

    private MouseAdapter clickListener;

    public TemplateThemeBlock(String name,
                              boolean displayTheme4NewTemplateMarker,
                              TemplateThemeConfig<T> config,
                              TemplateThemeProfilePane<T> profilePane) {
        this.name = name;
        this.setName(name);
        this.displayTheme4NewTemplateMarker = displayTheme4NewTemplateMarker;
        this.config = config;
        this.profilePane = profilePane;
        this.thumbnailPane = new ThumbnailPane();

        initializePane();
        addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                if (clickListener != null) {
                    clickListener.mouseClicked(e);
                }

                if (profileButton != null && profilePane != null) {
                    delegateProfileButtonClick(e);
                }
            }

            @Override
            public void mouseEntered(MouseEvent e) {
                hovering = true;
                repaint();
            }

            @Override
            public void mouseExited(MouseEvent e) {
                hovering = false;
                repaint();
            }
        });
    }

    private void initializePane() {
        setLayout(FRGUIPaneFactory.createBorderLayout());
        setPreferredSize(new Dimension(CONTENT_WIDTH, CONTENT_HEIGHT));
        setBackground(Color.WHITE);

        thumbnailPane.setBackground(Color.WHITE);
        thumbnailPane.setPreferredSize(new Dimension(ThemeThumbnail.WIDTH, ThemeThumbnail.HEIGHT));

        JPanel infoPane = FRGUIPaneFactory.createBorderLayout_S_Pane();
        infoPane.setPreferredSize(new Dimension(CONTENT_WIDTH, INFO_HEIGHT));
        infoPane.setBackground(Color.WHITE);
        infoPane.setBorder(BorderFactory.createEmptyBorder(0, IntervalConstants.INTERVAL_L7,0,IntervalConstants.INTERVAL_L7));

        UILabel titleLabel = new UILabel(name);
        titleLabel.setToolTipText(name);
        infoPane.add(titleLabel, BorderLayout.CENTER);

        if (profilePane != null) {
            addProfileButton(infoPane);
        }

        add(thumbnailPane, BorderLayout.CENTER);
        add(infoPane, BorderLayout.SOUTH);
    }

    public void setTheme(T theme) {
        this.theme = theme;
        Image image = null;
        if (theme != null) {
            ThemeThumbnail thumbnail = theme.getThumbnail();
            if (thumbnail != null) {
                image = thumbnail.getImage();
            }
        }
        thumbnailPane.setThumbnail(image);
        invalidate();
        repaint();
    }

    public T getTheme() {
        return this.theme;
    }

    public void setSelected(boolean selected) {
        this.selected = selected;
        repaint();
    }

    public void addClickListener(MouseAdapter clickListener) {
        this.clickListener = clickListener;
    }

    private void addProfileButton(JPanel panel) {
        profileButton = new UILabel(profileIcon);
        profileButton.setPreferredSize(new Dimension(24, 24));
        panel.add(profileButton, BorderLayout.EAST);
    }

    private void delegateProfileButtonClick(MouseEvent e) {
        int x = e.getX();
        int y = e.getY();

        int profileButtonX = profileButton.getX();
        int profileButtonY = thumbnailPane.getHeight() + profileButton.getY();

        boolean inX = profileButtonX <= x && x <= profileButtonX + profileButton.getWidth();
        boolean inY = profileButtonY <= y && y <= profileButtonY + profileButton.getHeight();
        if (inX && inY) {
            openProfileDialog();
        }
    }

    private void openProfileDialog() {
        if (theme == null) {
            return;
        }
        Window parent = SwingUtilities.getWindowAncestor(TemplateThemeBlock.this);
        TemplateThemeProfileDialog<T> profileDialog = new TemplateThemeProfileDialog<>(parent, profilePane);
        try {
            profilePane.populateBean((T) theme.clone());
        } catch (CloneNotSupportedException ex) {
            ex.printStackTrace();
        }
        profileDialog.setVisible(true);
    }

    @Override
    public void paint(Graphics g) {
        super.paint(g);
        Graphics2D g2d = (Graphics2D) g;
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        JTemplate<?,?> template = HistoryTemplateListCache.getInstance().getCurrentEditingTemplate();
        if (template != null) {
            TemplateThemeConfig<? extends TemplateTheme> templateUsingConfig = template.getUsingTemplateThemeConfig();
            TemplateTheme templateTheme = template.getTemplateTheme();
            if (templateUsingConfig == this.config && StringUtils.equals(templateTheme.getName(), name)) {
                theme4currentTemplateMarkIcon.paintIcon(this, g, getWidth() - 25, 0);
            }
        }

        if (displayTheme4NewTemplateMarker && StringUtils.equals(config.getThemeName4NewTemplate(), name)) {
            theme4NewTemplateMarkIcon.paintIcon(this, g, 0, thumbnailPane.getHeight() - 16);
        }

        if (selected || this.hovering) {
            g.setColor(HOVERING_BORDER_COLOR);
            Rectangle rectangle = new Rectangle(1, 1, this.getWidth() - 2, this.getHeight() - 2);
            GraphHelper.draw(g, rectangle, Constants.LINE_MEDIUM);
        }
    }

    private static class ThumbnailPane extends JPanel {
        private static final String LOADING_IMAGE_URL = "/com/fr/design/images/mainframe/loading/loading.gif";
        private static final Image LOADING_IMAGE = I18nImage.getImage(LOADING_IMAGE_URL);
        private Image thumbnail = null;

        @Override
        public void paint(Graphics g) {
            super.paint(g);
            Graphics2D g2d = (Graphics2D) g;
            Color oldColor = g2d.getColor();
            g2d.setColor(Color.WHITE);
            g2d.fillRect(0, 0, getWidth(), getHeight());
            g2d.setColor(oldColor);

            paintCenterImage(g2d, thumbnail != null ? thumbnail : LOADING_IMAGE);
        }

        private void paintCenterImage(Graphics2D g2d, Image image) {
            if (image == null) {
                return;
            }

            g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

            int width = getWidth();
            int height = getHeight();
            int imgWidth = image.getWidth(null);
            int imgHeight = image.getHeight(null);

            if (width <= 0 || height <= 0 || imgWidth <= 0 || imgHeight <= 0) {
                return;
            }

            float imgAspect = 1.0F * imgWidth / imgHeight;

            if (1.0F * width / height > 1.0F * imgWidth / imgHeight) {
                imgHeight = height;
                imgWidth = (int) (1.0F * imgHeight * imgAspect);
            } else {
                imgWidth = width;
                imgHeight = (int) (1.0F * imgWidth / imgAspect);
            }
            int x = (width - imgWidth) / 2;
            int y = (height - imgHeight) / 2;

            g2d.drawImage(image, x, y, imgWidth, imgHeight, null);
        }

        public void setThumbnail(Image thumbnail) {
            this.thumbnail = thumbnail;
            invalidate();
            repaint();
        }
    }
}