---
category: swing
folder: CustomBevelBorder
title: BevelBorderの射影のサイズを変更する
tags: [BevelBorder, Border, JButton]
author: aterai
pubdate: 2017-02-13T15:04:11+09:00
description: BevelBorderの射影のサイズを変更し、それをJButtonに設定します。
image: https://drive.google.com/uc?id=1fuHYW5tx-oxLY2qD2ARNOmLzj85ZtxEzjg
---
* 概要 [#summary]
`BevelBorder`の射影のサイズを変更し、それを`JButton`に設定します。
#download(https://drive.google.com/uc?id=1fuHYW5tx-oxLY2qD2ARNOmLzj85ZtxEzjg)
* サンプルコード [#sourcecode]
#code(link){{
class CustomBevelBorder extends BevelBorder {
private final Insets i = new Insets(8, 8, 8, 8);
protected CustomBevelBorder(int bevelType) {
super(bevelType);
}
@Override public Insets getBorderInsets(Component c, Insets insets) {
insets.set(i.top + 2, i.left + 2, i.bottom + 2, i.right + 2);
return insets;
}
@Override public void paintBorder(
Component c, Graphics g, int x, int y, int width, int height) {
boolean isPressed = false;
if (c instanceof AbstractButton) {
ButtonModel m = ((AbstractButton) c).getModel();
isPressed = m.isPressed();
}
if (bevelType == RAISED && !isPressed) {
paintRaisedBevel(c, g, x, y, width, height);
} else { // if (bevelType == LOWERED) {
paintLoweredBevel(c, g, x, y, width, height);
}
}
@Override protected void paintRaisedBevel(
Component c, Graphics g, int x, int y, int width, int height) {
int w = width - 1;
int h = height - 1;
Graphics2D g2 = (Graphics2D) g.create();
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.translate(x, y);
g2.setPaint(getHighlightInnerColor(c));
fillTopLeft(g2, w, h, i);
g2.setPaint(getShadowInnerColor(c));
g2.fill(makeBottomRightShape(w, h, i));
g2.setPaint(getShadowOuterColor(c));
drawRectLine(g2, w, h, i);
g2.dispose();
}
@Override protected void paintLoweredBevel(
Component c, Graphics g, int x, int y, int width, int height) {
int w = width - 1;
int h = height - 1;
Graphics2D g2 = (Graphics2D) g.create();
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.translate(x, y);
g2.setPaint(getShadowInnerColor(c));
fillTopLeft(g2, w, h, i);
g2.setPaint(getHighlightInnerColor(c));
g2.fill(makeBottomRightShape(w, h, i));
g2.setPaint(getShadowOuterColor(c));
drawRectLine(g2, w, h, i);
g2.dispose();
}
private void fillTopLeft(Graphics2D g2, int w, int h, Insets i) {
g2.fillRect(0, 0, w, i.top);
g2.fillRect(0, 0, i.left, h);
}
private Shape makeBottomRightShape(int w, int h, Insets i) {
Path2D p = new Path2D.Double();
p.moveTo(w, 0);
p.lineTo(w - i.right, i.top);
p.lineTo(w - i.right, h - i.bottom);
p.lineTo(i.left, h - i.bottom);
p.lineTo(0, h);
p.lineTo(w, h);
p.closePath();
return p;
}
private void drawRectLine(Graphics2D g2, int w, int h, Insets i) {
g2.drawRect(0, 0, w, h);
g2.drawRect(i.left, i.top, w - i.left - i.right, h - i.top - i.bottom);
g2.drawLine(0, 0, i.left, i.top);
g2.drawLine(w, 0, w - i.right, i.top);
g2.drawLine(0, h, i.left, h - i.bottom);
g2.drawLine(w, h, w - i.right, h - i.bottom);
}
}
}}
* 解説 [#explanation]
- `Default BevelBorder`
-- 射影の高さは`2px`で固定
-- `BevelBorder#getBorderInsets(...)`をオーバーライドして内余白を変更しても変化しない
-- このサイズは`BevelBorder#getBorderInsets(...)`をオーバーライドして内余白を変更しても変化しない
- `Custom BevelBorder`
-- `BevelBorder#getBorderInsets(...)`をオーバーライドして内余白を変更
-- `BevelBorder#paintBorder(...)`をオーバーライドして`JButton`の状態に応じて`BevelBorder#paintRaisedBevel(...)`と`BevelBorder#paintLoweredBevel(...)`の描画を切り替えるよう設定
-- `BevelBorder#paintRaisedBevel(...)`をオーバーライドして内余白に応じたサイズの射影と境界線を描画
-- `BevelBorder#paintLoweredBevel(...)`をオーバーライドして内余白に応じたサイズの射影と境界線を描画
----
- `JButton`の`ContentArea`の描画が`LookAndFeel`や初期値の関係で不正になる場合がある？
-- `SwingUtilities.updateComponentTreeUI(...)`を使用して回避
* 参考リンク [#reference]
- [https://docs.oracle.com/javase/jp/8/docs/api/javax/swing/border/BevelBorder.html BevelBorder (Java Platform SE 8)]
- [https://stackoverflow.com/questions/38967517/create-bevelborder-of-certain-width-in-java-swing Create BevelBorder of certain width in Java Swing - Stack Overflow]
- [[JButtonの描画>Swing/ButtonPainted]]
* コメント [#comment]
#comment
#comment