Question

有没有简单的方法让我的jinternalframes成为两全其美的

当我希望它们作为jdesktoppane的一部分时嵌入
也可移动并能够处理自己的事件

enter image description here

希望这张照片会有所帮助。现在我有我的代码将项目拖到你的播放器，它插入下一个可用的背包插槽，但我也希望能够将它拖到任何背包插槽，但你可以看到它在下面绘制。有没有快速而肮脏的方法来解决这个问题？我的JDesktopPane顶部有一个面板，可以绘制所有内容（当然除了jinternalframes）。对不起，所有代码都没有SSCCEE。只是觉得展示我的逻辑会更好。

theDesktop.addMouseMotionListener(new MouseMotionListener() {
    @Override
    public void mouseDragged(MouseEvent e) {
        updateMouseCursor(e);
        if (MapGamePanel.draggingItem){
            Point point = e.getPoint();
            MapGamePanel.currentX = point.x;
            MapGamePanel.currentY = point.y;
        }
    }

    @Override
    public void mouseMoved(MouseEvent e) {
        updateMouseCursor(e);
    }
});

theDesktop.addMouseListener(new MouseListener() {
    @Override
    public void mousePressed(MouseEvent e) {
        if (e.getButton() == MouseEvent.BUTTON1){ //left
            int whiteLeftSpace = (theDesktop.getWidth() - xTiles*32)/2;
            boolean inGamePanel = e.getX() > whiteLeftSpace && e.getX() < (xTiles*32 + whiteLeftSpace) && e.getY() < yTiles*32;
            String globalCoords = localToGlobalCoords((e.getX()-whiteLeftSpace)/32 + "," + e.getY()/32);
            if (inGamePanel){
                //looking for tiles with no mobs or players and loot
                String[] globalCoordsSplit = globalCoords.split(",");
                int globalX = Integer.parseInt(globalCoordsSplit[0]);
                int globalY = Integer.parseInt(globalCoordsSplit[1]);
                if ((!(globalX == characterX && globalY == characterY)) && //not under character
                        ((globalX-1) == characterX || globalX == characterX || (globalX+1) == characterX) && //(+/-) 1 xTile
                        ((globalY-1) == characterY || globalY == characterY || (globalY+1) == characterY)){ //(+/-) 1 yTile
                    HashMap <String, String> dropsToDrag = new HashMap <String, String>();
                    Boolean mobPresent = false;
                    Boolean playerPresent = false;
                    if (MapGamePanel.entityInfoHashTable.containsKey(globalCoords)){ //no mobs/npcs
                        mobPresent = true;
                    }
                    Iterator<Entry<String, String>> it = MapGamePanel.entityInfoHashTable.entrySet().iterator();
                    while (it.hasNext()) {
                        Entry<String, String> pairs = it.next();
                        String key = pairs.getKey();
                        if (!key.contains(",") && !key.contains("-")){
                            String[] values = pairs.getValue().split("\\|");
                            String tempCoords = values[0];
                            if (globalCoords.equals(tempCoords)){ //player on spot
                                playerPresent = true;
                            }
                        } else if (key.contains("-")){
                            String[] splitKey = key.split("-");
                            if (splitKey[0].equals(globalCoords)){
                                dropsToDrag.put(key, pairs.getValue());
                            }
                        }
                    }
                    int smallEntityId = Integer.MAX_VALUE; //2147483647
                    if (!mobPresent && !playerPresent && !dropsToDrag.isEmpty()){
                        Iterator<Entry<String, String>> it2 = dropsToDrag.entrySet().iterator();
                        while (it2.hasNext()) {
                            Entry<String, String> pairs = it2.next();
                            String[] keyWithPK = pairs.getKey().split("-");
                            String tmpCoords = keyWithPK[0];
                            String[] coordsSplit = tmpCoords.split(",");
                            int tempX = Integer.parseInt(coordsSplit[0]);
                            int tempY = Integer.parseInt(coordsSplit[1]);
                            int tmpEntityId = Integer.parseInt(keyWithPK[1]);
                            String[] values = pairs.getValue().split("\\|");
                            String tmpId = values[0];
                            int tmploot_amt = Integer.parseInt(values[1]);
                            String tmploot_filename = values[2];
                            if (tmpEntityId < smallEntityId){
                                smallEntityId = tmpEntityId;
                                MapGamePanel.dragItemXCoord = tempX;
                                MapGamePanel.dragItemYCoord = tempY;
                                MapGamePanel.dragItemEntityId = tmpEntityId;
                                MapGamePanel.dragItemId = tmpId;
                                MapGamePanel.dragItemAmt = tmploot_amt;
                                MapGamePanel.draggingItemFilename = tmploot_filename;
                            }
                        }
                        MapGamePanel.draggingItem = true;
                        Point point = e.getPoint();
                        MapGamePanel.startX = point.x;
                        MapGamePanel.startY = point.y;  
                    }
                }
            }
        }
    }

    @Override
    public void mouseReleased(MouseEvent e) {
        if (e.getButton() == MouseEvent.BUTTON3){ //right
            movementBitKeys.keyReleased(87);
            movementBitKeys.keyReleased(68);
            movementBitKeys.keyReleased(83);
            movementBitKeys.keyReleased(65);
            mouseHeld = false;
        }
        if (MapGamePanel.draggingItem){
            int whiteLeftSpace = (theDesktop.getWidth() - xTiles*32)/2;
            String[] globalCoords = localToGlobalCoords((MapGamePanel.currentX-whiteLeftSpace)/32 + "," + MapGamePanel.currentY/32).split(",");
            int globalX = Integer.parseInt(globalCoords[0]);
            int globalY = Integer.parseInt(globalCoords[1]);

            String[] startCoords = localToGlobalCoords((MapGamePanel.startX-whiteLeftSpace)/32 + "," + MapGamePanel.startY/32).split(",");
            int startX = Integer.parseInt(startCoords[0]);
            int startY = Integer.parseInt(startCoords[1]);
            if (globalX == characterX && globalY == characterY){
                    sendToServer("pickupItem|" + startX + "," + startY + "-" + MapGamePanel.dragItemEntityId + "|backpack|-1|" + MapGamePanel.dragItemAmt);
            } else if (((globalX-1) == characterX || globalX == characterX || (globalX+1) == characterX) &&
                    ((globalY-1) == characterY || globalY == characterY || (globalY+1) == characterY)){
                if (!(startX == globalX && startY == globalY)){
                    sendToServer("moveItem|" + startX + "," + startY + "-" + MapGamePanel.dragItemEntityId + "|ground|" + globalX + "," + globalY + "|-1|" + MapGamePanel.dragItemAmt);
                }
            }
            MapGamePanel.draggingItem = false;
        }
    }

    @Override
    public void mouseClicked(MouseEvent e) {}

    @Override
    public void mouseEntered(MouseEvent e) {}

    @Override
    public void mouseExited(MouseEvent e) {}
});

}

编辑由于这些建议，我把JLayeredPane弄得乱七八糟。

public static JFrame frame;
public static JLayeredPane theDesktop;
public static MapGamePanel gamePanel; //where all my game tiles draw
    ....//lines removed
theDesktop = new JDesktopPane();
theDesktop.setOpaque(false);
theDesktop.add(backpackFrame, JLayeredPane.DEFAULT_LAYER);
theDesktop.add(gamePanel, JLayeredPane.DEFAULT_LAYER);
theDesktop.add(new JLabel("THIS SHOULD SHOW UP ABOVE THE OTHER CRAP, but does not"), JLayeredPane.DRAG_LAYER);
    ....//lots of lines removed
frame.getContentPane().add(theDesktop);

Answer 1

DragLabelOnLayeredPane和ChessBoard是使用JLayeredPane的好例子。

GlassPaneDemo显示在玻璃窗格上拖动。

JComponent#setComponentPopupMenu()是一种添加上下文菜单的方法。

Answer 2

为了解决这个问题，我创建了一个JLabel，当项目处于my（draggingItem boolean）状态时，我将一直更新。这是一些代码。感谢大家的所有帮助和想法...

public void mouseDragged(MouseEvent e) {
    updateMouseCursor(e);
    if (MapGamePanel.draggingItem){
        Point point = e.getPoint();
        MapGamePanel.currentX = point.x;
        MapGamePanel.currentY = point.y;
        dragJLabel.setBounds(MapGamePanel.currentX, MapGamePanel.currentY, 32, 32);
    }
}

public void mousePressed(MouseEvent e) {
    MapGamePanel.startX = point.x;
    MapGamePanel.startY = point.y;
    dragJLabel = new JLabel(MapGamePanel.draggingItemFilename);
    dragJLabel.setBounds(MapGamePanel.startX, MapGamePanel.startY, 32, 32);
    theDesktop.add(dragJLabel, JLayeredPane.DRAG_LAYER);
}

对于mouseReleased，我将删除JLabel。另外正如你在屏幕截图中看到的那样，还没有图像，只是文字，只是快速编码，所以我可以在这里提供答案以帮助其他人......

enter image description here

JInternalFrames监听JDesktopPane事件

2 个答案: