这是我的问题,当我开始输入并到达我的JEditorPane的垂直边缘时,jeditor窗格的高度随着我的输入一直延伸到窗口的末尾。我在jeditor下面的textareas最终消失了。基本上,一切都向下移动,我希望jeditor窗格保持静止高度。
为什么jeditor窗格会移动?我该如何预防?
我之前见过这个,但不记得如何修复它。我认为这与我如何使用布局管理器有关。我可以使用不同的布局,但我更熟悉GridBag。我尝试了首选高度,它最初工作,但就像我说...键入高度变化后。奇怪。
这是代码(它是scala,但将其视为伪代码)。
import java.awt.{ Insets, GridBagConstraints, Dimension }
import javax.swing._
import javax.swing.event._
import java.awt._
import java.awt.event._
import scala.swing.Swing._
import scala.swing.{ MainFrame, Panel, SimpleSwingApplication }
import org.slf4j._
import java.io.{ File, FileReader }
import javax.swing.filechooser.FileNameExtensionFilter
import org.berlin.syntax.actions._
import org.berlin.syntax._
import org.berlin.syntax.components._
class MyPanel extends JPanel {
val constraints: GridBagConstraints = this.defaultLayoutContraints()
val outputLogTextArea = new OutputTextArea
val outputStatusTextArea = new StatusTextArea
val inputConsoleTextArea = new InputTextArea
val labelCaretPos = new javax.swing.JLabel("(0)")
val outputTextScrollPane = defaultScroll(new JScrollPane(outputLogTextArea))
val outputStatusScrollPane = defaultScroll(new JScrollPane(outputStatusTextArea))
val inputTextScrollPane = defaultScroll(new JScrollPane(inputConsoleTextArea))
val fileChooser = new JFileChooser
{
// Constructor
this.setLayout(new GridBagLayout)
this.add(outputTextScrollPane, constraints)
this.add(outputStatusScrollPane, shiftDown(constraints))
this.add(inputTextScrollPane, shiftDown(constraints))
this.add(labelCaretPos, shiftDown(constraints))
fileChooser.setCurrentDirectory(targetInitialDir)
fileChooser.addChoosableFileFilter(new FileNameExtensionFilter("Current Log Files", "log"))
this.outputTextScrollPane.setViewportView(outputLogTextArea)
documentTypeChanged("text/plain")
new CaretMonitor(outputLogTextArea, labelCaretPos)
} // End constructor
def defaultLayoutContraints(): GridBagConstraints = {
val constraints = new GridBagConstraints
val insets = new Insets(2, 2, 2, 2)
constraints.insets = insets
constraints.anchor = GridBagConstraints.NORTHWEST
constraints.gridy = 3
constraints.gridx = 1
constraints.weightx = 1
constraints.weighty = 1
constraints.fill = GridBagConstraints.BOTH
return constraints
}
def defaultScroll(s: JScrollPane): JScrollPane = {
s.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS)
s.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS)
return s
}
def shiftDown(c: GridBagConstraints): GridBagConstraints = {
constraints.gridy = constraints.gridy + 1;
return constraints;
}
protected class OutputTextArea extends JEditorPane {
???????????
this.setPreferredSize(0, maxHeight - 230);
this.setCaretPosition(0)
this.setEditable(true)
this.setFont(new Font("Courier New", Font.PLAIN, 11))
val bundle = java.util.ResourceBundle.getBundle("jsyntaxpane/Bundle")
this.setContentType(bundle.getString("SyntaxTester.jEdtTest.contentType"))
this.setCaretColor(new java.awt.Color(0, 0, 0))
}
protected class StatusTextArea extends JTextArea {
this.setColumns(maxTextAreaCols)
this.setRows(6)
this.setLineWrap(false)
this.setCaretPosition(0)
this.setEditable(false)
this.setFont(new Font("Courier New", Font.PLAIN, 12))
}
MyFrame extends JFrame {
this.setJMenuBar(coreContentPanel.createMenuBar)
this.setLocation(initXPos, initYPos)
this.setLayout(new FlowLayout(FlowLayout.CENTER))
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)
this.preferredSize = (maxWidth, maxHeight)
this.focusable = true
this.add(new MyPanel)
pack
}
} // End of the Class //
答案 0 :(得分:2)
设置编辑器的首选大小一旦包含在JScrollPane
内,就不会有任何效果。您需要设置滚动窗格本身的首选大小(可能通过获取包装组件的首选大小)。
如果您使用的是GridBagLayout
,您可能还会发现将GridBagContraints
上的权重设置为0对具有固定大小的元素(例如标签)可以帮助增加可用于需要伸展空间的部件的空间。