我一直在google搜索了幾個小時試圖無濟於事一百萬個不同的細微變化都,所以我想我最好的選擇是選擇的人的大腦比我問題重新驗證/再油漆按鈕面板
我更熟練編寫一個從數據庫加載一堆按鈕的類,目標是讓用戶能夠按照自己的喜好排列按鈕,但是,出於某種原因,我似乎無法獲得框架以重新驗證或重繪。按鈕會四處移動,但它們不會重新排列,因爲我已將它們編碼。組織似乎正在正常工作,即在釋放鼠標按鈕時參與重新排列的代碼,只是組件只會停留在被拖放的位置,即使它們在其各自的列表中重新排序。
代碼很長,我不想發佈整個班級,因爲它可能會關閉一些人,但我不知道我在哪裏犯錯,所以我認爲這將是我最好的興趣發佈整個事情。關注的主要方面是mouseReleased(MouseEvent e) {...}
和repaint()
/refresh()
方法,但是,可能有一些我在其他地方丟失的東西。
tl; dr: 我基本上只是嘗試執行一個setBounds()
後,用戶拖動和按下他們想要的順序按鈕,但按鈕停留在同一個地方,他們被拖放,而不會revalidate()
或repaint()
。我甚至不能通過removeAll
清除組件面板並重新加載。
謝謝你在先進。這裏是我的代碼:
public class AdminButtonEditor extends javax.swing.JFrame {
public AdminButtonEditor(OrderView parent) { ...
...
Component[] components = buttonsPanel.getComponents();
for (int i = 0; i < components.length; i++) {
Component c = components[i];
if (c instanceof JButton) {
JButton jb = (JButton) c;
jb.setFocusable(false);
buttons.add(new MyJButton(...));
}
}
for (int i = 0; i < buttons.size(); i++) {
buttons.get(i).addTo(editPanel);
buttons.get(i).orderIndex=modButtonList.get(i).menuModifier.getViewOrderValue();
buttons.get(i).idx=i;
}
EventHandler eh = new EventHandler();
addWindowListener(eh);
editPanel.addMouseMotionListener(eh);
editPanel.addMouseListener(eh);
contentPane.add(editPanel, BorderLayout.CENTER);
}
protected void refresh() {
if (!buttons.isEmpty() && buttons.get(0) != null) {
contentPane.remove(editPanel);
editPanel.removeAll();
for (int i = 0; i < buttons.size(); i++) {
MyJButton s = buttons.get(i);
s.addTo(editPanel);
}
contentPane.add(editPanel, BorderLayout.CENTER);
editPanel.repaint();
}
}
public void paint(Graphics g) {
refresh();
super.paint(g);
}
private int getSelectionIndex(int x, int y) {
int s=-1;
for (int i=buttons.size()-1; i>=0;i--){
if (buttons.get(i).contains(x, y)) {
s = i;
break;
}
}
return s;
}
private class EventHandler implements MouseInputListener,WindowListener, ActionListener {
private int selectionIndex, startX, startY, lastX, lastY;
private MyJButton selected;
private boolean moving=false;
....
....
public void mouseReleased(MouseEvent e) {
if (moving){
setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
moving=false;
int dropX=e.getX();
int dropY=e.getY();
int row = dropY/selected.height;
int col = dropX/selected.width;
int idx=(row*3+col)-1;
int oldIdx=buttons.indexOf(selected);
insertIntoList(idx,oldIdx);
}
if (selected!=null){
selected.unHighLight();
selected=null;
}
Collections.sort(buttons);
for (int i=0;i<buttons.size();i++){
//modButtonList.get(buttons.get(i).idx).menuModifier.setViewOrderValue(buttons.get(i).orderIndex);
}
editPanel.validate();
repaint();
}
private void insertIntoList(int idx, int oldIdx) {
MyJButton temp = buttons.get(idx);
int tempid=buttons.get(idx).idx;
buttons.set(idx, new MyJButton(selected.text,selected.x,selected.y,selected.width,selected.height,selected.idx));
buttons.get(idx).orderIndex=temp.orderIndex;
if (idx<oldIdx){
int id;
for (int i=oldIdx;i>idx+1;i--){
id=buttons.get(i).orderIndex;
buttons.set(i, new MyJButton(buttons.get(i-1).text,buttons.get(i-1).x,buttons.get(i-1).y,buttons.get(i-1).width,buttons.get(i-1).height,buttons.get(i-1).idx));
buttons.get(i).orderIndex=id;
}
id = buttons.get(idx+1).orderIndex;
buttons.set(idx+1,new MyJButton(temp.text,temp.x,temp.y,temp.width,temp.height,temp.idx));
buttons.get(idx+1).orderIndex=id;
} else if (idx>oldIdx) {
int id;
for (int i=oldIdx;i<idx-1;i++){
id=buttons.get(i).orderIndex;
buttons.set(i, new MyJButton(buttons.get(i+1).text,buttons.get(i+1).x,buttons.get(i+1).y,buttons.get(i+1).width,buttons.get(i+1).height,buttons.get(i+1).idx));
buttons.get(i).orderIndex=id;
}
id = buttons.get(idx-1).orderIndex;
buttons.set(idx-1,new MyJButton(temp.text,temp.x,temp.y,temp.width,temp.height,temp.idx));
buttons.get(idx-1).orderIndex=id;;
} else {
buttons.get(idx).x=buttons.get(idx).originx;
buttons.get(idx).y=buttons.get(idx).originy;
}
repaint();
}
public void mouseDragged(MouseEvent e) {
if (moving) {
Graphics g = editPanel.getGraphics();
g.setColor(Color.black);
g.drawLine(selected.getXPos(), 0, selected.getXPos(),editPanel.getWidth());
g.drawLine(0, selected.getYPos(), editPanel.getHeight(), selected.getYPos());
selected.moveBy(e.getX()-lastX, e.getY()-lastY);
g.setXORMode(Color.black);
g.drawLine(selected.getXPos(), 0, selected.getXPos(), editPanel.getWidth());
g.drawLine(0, selected.getYPos(), editPanel.getHeight(), selected.getYPos());
lastX=e.getX();
lastY=e.getY();
repaint();
}
}
....
}
private class MyJButton extends JButton implements Comparable {
private int orderIndex,idx;
private int x, y, width, height,originx,originy;
private String text;
public Border DEFAULT_BORDER;// new SoftBevelBorder(BevelBorder.RAISED);
public Border SELECT_BORDER = BorderFactory.createLineBorder(Color.RED, 3, true);
public MyJButton(String text, int x, int y, int width, int height) {
....
setFocusable(false);
}
public MyJButton(String text, int x, int y, int width, int height,int idx) {....}
public void addTo(JPanel p) {
setBounds(x, y, width, height);
p.add(this);
}
@Override
public boolean contains(int x, int y) {
int x1 = x, y1 = y;
if (x1 >= this.x && y1 >= this.y && x1 <= this.x + width && y1 <= this.y + height) {
return true;
} else {
return false;
}
}
@Override
public void setSize(int w, int h) {
width = w;
height = h;
}
....
public void moveBy(int dx, int dy) {
x += dx;
y += dy;
}
@Override
public void resize(int newWidth, int newHeight) {
this.width = newWidth;
this.height = newHeight;
setBounds(x, y, width, height);
}
public int compareTo(Object o) {
MyJButton mjb = (MyJButton)o;
return this.idx-mjb.idx;
}
}
}
忘記setSize()/ setBounds/setLocation並使用適當的'LayoutManager'。不要使用setPreferred/setMinimum/setMaximum-size()方法。每次從面板添加/刪除組件時,只需在該面板上調用'revalidate(); repaint();'。這一切都適用於一個適當的'佈局管理器'。 –
如果您發佈了一個能夠再現您的問題的最小程序,它將有所幫助。 –
@GuillaumePolet - 任何LayoutManager都能工作嗎?我不是一個Swing主腦,我認爲你在使用setBounds()方法時不應該使用LayoutManagers?我非常感謝你的意見,但我不確定你爲什麼給我提出一個問題的負面觀點,雖然對你來說也許是一個愚蠢的問題。 –