REPORT-4634 组件叠加体验优化=>4缩略图=>缩略图框架

designer_form/src/com/fr/design/mainframe/ComponentTree.java

@@ -1,9 +1,12 @@
 package com.fr.design.mainframe;
 
 import java.awt.*;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
 import java.util.ArrayList;
 
 import javax.swing.*;
+import javax.swing.tree.TreeCellRenderer;
 import javax.swing.tree.TreePath;
 import javax.swing.tree.TreeSelectionModel;
 
@@ -12,6 +15,7 @@ import com.fr.design.designer.creator.*;
 import com.fr.design.designer.treeview.ComponentTreeCellRenderer;
 import com.fr.design.designer.treeview.ComponentTreeModel;
 import com.fr.design.gui.itree.UITreeUI;
+import com.fr.design.utils.gui.GUICoreUtils;
 import com.fr.stable.StringUtils;
 
 public class ComponentTree extends JTree {
@@ -19,6 +23,7 @@ public class ComponentTree extends JTree {
     private FormDesigner designer;
     private ComponentTreeModel model;
     private UITreeUI uiTreeUI = new UITreeUI();
+    private PopupPreviewPane previewPane;
     private static final int PADDING_LEFT = 10;
     private static final int PADDING_TOP = 8;
 
@@ -33,6 +38,7 @@ public class ComponentTree extends JTree {
         this.setTransferHandler(new TreeTransferHandler());
         this.refreshTreeRoot();
         addTreeSelectionListener(designer);
+        addMouseMotionListener(new ComponetTreeMouseListener(this));
         setEditable(true);
         setUI(uiTreeUI);
         setBorder(BorderFactory.createEmptyBorder(PADDING_TOP, PADDING_LEFT, 0, 0));
@@ -63,6 +69,7 @@ public class ComponentTree extends JTree {
 
     /**
      * 是否可编辑
+     *
      * @param path 树路径
      * @return 是则返回true
      */
@@ -73,13 +80,13 @@ public class ComponentTree extends JTree {
 
     /**
      * 将值转换为文本
+     *
      * @param value    值
      * @param selected 是否选中
      * @param expanded 扩展
      * @param leaf     是否叶子
      * @param row      行
      * @param hasFocus 是否焦点
-     *
      * @return 返回文本
      */
     @Override
@@ -212,4 +219,93 @@ public class ComponentTree extends JTree {
         return new TreePath(components);
     }
 
+    private void popupPreviewPane(int popupPosYOnScreen) {
+        if (previewPane == null) {
+            previewPane = new PopupPreviewPane();
+        }
+        if (previewPane.isVisible() && previewPane.getLocationOnScreen().y != popupPosYOnScreen) {
+            previewPane.setVisible(false);
+        }
+
+        if (!previewPane.isVisible()) {
+            int popupPosY = popupPosYOnScreen - FormHierarchyTreePane.getInstance().getLocationOnScreen().y;
+            GUICoreUtils.showPopupMenu(previewPane, FormHierarchyTreePane.getInstance(), -previewPane.getPreferredSize().width, popupPosY);
+        }
+    }
+
+    private void hidePreviewPane() {
+        if (previewPane != null && previewPane.isVisible()) {
+            previewPane.setVisible(false);
+        }
+    }
+
+    private final class ComponetTreeMouseListener extends MouseAdapter {
+        private final JTree tree;
+
+        private ComponetTreeMouseListener(JTree tree) {
+            this.tree = tree;
+        }
+
+        @Override
+        public void mouseMoved(MouseEvent e) {
+
+            Point p = e.getPoint();
+            int selRow = tree.getRowForLocation(p.x, p.y);
+            TreeCellRenderer r = tree.getCellRenderer();
+            if (selRow != -1 && r != null) {
+                TreePath path = tree.getPathForRow(selRow);
+                Point point = tree.getPathBounds(path).getLocation();
+                SwingUtilities.convertPointToScreen(point, tree);
+                popupPreviewPane(point.y);
+            } else {
+                hidePreviewPane();
+            }
+        }
+    }
+
+    private class PopupPreviewPane extends JPopupMenu {
+        private Container contentPane;
+
+        PopupPreviewPane() {
+            contentPane = new JPanel();
+            contentPane.setBackground(Color.blue);
+            this.setLayout(new BorderLayout());
+//            this.add(new PopupToolPane(propertyItem), BorderLayout.NORTH);
+            this.add(contentPane, BorderLayout.CENTER);
+            this.setOpaque(false);
+//            setPreferredSize(new Dimension(CONTAINER_WIDTH - TAB_WIDTH, POPUP_DEFAULT_HEIGHT));
+            setPreferredSize(new Dimension(200, 200));
+            setBorder(BorderFactory.createLineBorder(UIConstants.LINE_COLOR));
+        }
+
+        @Override
+        public void setVisible(boolean visible) {
+            super.setVisible(visible);
+//            if (visible == true) {
+//                replaceContentPane(propertyItem.getContentArea());
+//            } else {
+//                propertyItem.reAddContentArea();
+//            }
+        }
+
+        public void menuSelectionChanged(boolean isIncluded) {
+        }
+
+        public Container getContentPane() {
+            return contentPane;
+        }
+
+        public void replaceContentPane(Container pane) {
+            this.remove(this.contentPane);
+            this.add(this.contentPane = pane);
+            refreshContainer();
+        }
+
+        private void refreshContainer() {
+            validate();
+            repaint();
+            revalidate();
+        }
+    }
+
 }