---
category: swing
folder: VerticalTitledBorder
title: TitledBorderのタイトルを縦(左側)に表示する
tags: [Border, TitledBorder, JLabel]
author: aterai
pubdate: 2012-06-25T18:19:01+09:00
description: TitledBorderのタイトル文字列を縦(左側)に表示します。
image: https://lh4.googleusercontent.com/-ndnU9h6kzPw/T-gQmrTVqdI/AAAAAAAABOQ/KwNEpVGLDa0/s800/VerticalTitledBorder.png
---
* 概要 [#summary]
`TitledBorder`のタイトル文字列を縦(左側)に表示します。
#download(https://lh4.googleusercontent.com/-ndnU9h6kzPw/T-gQmrTVqdI/AAAAAAAABOQ/KwNEpVGLDa0/s800/VerticalTitledBorder.png)
* サンプルコード [#sourcecode]
#code(link){{
class VerticalTitledBorder extends TitledBorder {
private final JLabel label;
public VerticalTitledBorder(String title) {
super(title);
this.label = new JLabel(title);
this.label.setOpaque(true);
// this.label.putClientProperty(BasicHTML.propertyKey, null);
}
@Override public void paintBorder(
Component c, Graphics g, int x, int y, int width, int height) {
Border border = getBorder();
String title = getTitle();
if ((title != null) && !title.isEmpty() && border != null) {
int edge = (border instanceof TitledBorder) ? 0 : EDGE_SPACING;
JLabel label = getLabel(c);
Dimension size = label.getPreferredSize();
Insets insets = getBorderInsets(border, c, new Insets(0, 0, 0, 0));
int borderX = x + edge;
int borderY = y + edge;
int borderW = width - edge - edge;
int borderH = height - edge - edge;
int labelH = size.height;
int labelW = height - insets.top - insets.bottom; // TEST: - (edge * 8);
if (labelW > size.width) {
labelW = size.width;
}
int ileft = edge + insets.left / 2 - labelH / 2;
if (ileft < edge) {
borderX -= ileft;
borderW += ileft;
}
border.paintBorder(c, g, borderX, borderY, borderW, borderH);
Graphics2D g2 = (Graphics2D) g.create();
g2.translate(0, (height + labelW) / 2);
g2.rotate(Math.toRadians(-90));
// or: g2.transform(AffineTransform.getQuadrantRotateInstance(-1));
label.setSize(labelW, labelH);
label.paint(g2);
g2.dispose();
} else {
super.paintBorder(c, g, x, y, width, height);
}
}
@Override public Insets getBorderInsets(Component c, Insets insets) {
Border border = getBorder();
insets = getBorderInsets(border, c, insets);
String title = getTitle();
if ((title != null) && !title.isEmpty()) {
int edge = (border instanceof TitledBorder) ? 0 : EDGE_SPACING;
JLabel label = getLabel(c);
Dimension size = label.getPreferredSize();
if (insets.left < size.height) {
insets.left = size.height - edge;
}
insets.top += edge + TEXT_SPACING;
insets.left += edge + TEXT_SPACING;
insets.right += edge + TEXT_SPACING;
insets.bottom += edge + TEXT_SPACING;
}
return insets;
}
// Copied from TitledBorder
private Color getColor(Component c) {
Color color = getTitleColor();
if (color != null) {
return color;
}
color = UIManager.getColor("TitledBorder.titleColor");
if (color != null) {
return color;
}
return (c != null) ? c.getForeground() : null;
}
private JLabel getLabel(Component c) {
this.label.setText(getTitle());
this.label.setFont(getFont(c));
this.label.setForeground(getColor(c));
this.label.setComponentOrientation(c.getComponentOrientation());
this.label.setEnabled(c.isEnabled());
this.label.setBackground(c.getBackground()); // ???
return this.label;
}
private static Insets getBorderInsets(
Border border, Component c, Insets insets) {
if (border == null) {
insets.set(0, 0, 0, 0);
} else if (border instanceof AbstractBorder) {
AbstractBorder ab = (AbstractBorder) border;
insets = ab.getBorderInsets(c, insets);
} else {
Insets i = border.getBorderInsets(c);
insets.set(i.top, i.left, i.bottom, i.right);
}
return insets;
}
}
}}
* 解説 [#explanation]
- 左
-- `TitledBorder`のデフォルト(上)
-- `Java 7`から文字列が`Border`の幅より長い場合`...`で省略されるようになった
- 中
-- `TitledBorder#paintBorder(...)`などをオーバーライドしてタイトルを左側に縦表示
-- `TitledBorder#paintBorder(...)`などをオーバーライドしてタイトルを左側中央に縦表示
- 右
-- `TitledBorder`と`VerticalTitledBorder`の組み合わせ
* 参考リンク [#reference]
- [https://docs.oracle.com/javase/jp/8/docs/api/javax/swing/border/TitledBorder.html TitledBorder (Java Platform SE 8)]
* コメント [#comment]
#comment
#comment