[英]How to create rounded corner BevelBorder in Java Swing?
我想使用斜面邊框,因為它有點3D但我不知道如何創建圓角BevelBorder。
SoftBevelBorder不起作用,因為圓角半徑太小。 如何使角落更圓?
這里有一個圓角邊框示例,您可以在其中調整半徑:
http://java-swing-tips.blogspot.co.at/2012/03/rounded-border-for-jtextfield.html
不是斜角,但你可以看到如何在SoftBevelBorder的源代碼中實現“斜面”。 如果你設法做到這一點,我會對代碼感興趣:)
為了獲得正確的邊框形狀,您需要覆蓋AbstractBorder.paintBorder(...)
方法。 執行此操作時,可以向該方法添加與此類似的代碼。
super.paintBorder(c, g, x, y, width, height);
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHints(new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON));
Shape clip = g2d.getClip();
Area rect = new Area(clip);
rect.subtract(new Area(new RoundRectangle2D.Double(x, y, width, height, radii, radii)));
g2d.setClip(rect);
g2d.setColor(c.getParent().getBackground());
g2d.fillRect(0, 0, width, height);
g2d.setClip(clip);
g2d.draw(rect);
現在有兩種主要方法可以在邊框周圍繪制斜角效果,但取決於您想要斜角的復雜程度,取決於您使用的方式。 對於使用2種顏色的簡單斜角邊框,您可以使用與此類似的東西。
g2d.setColor(inner); //Inner Rectangle
g2d.draw(new RoundRectangle2D.Double(x + 1, y + 1, width - 2, height - 2, radii, radii));
g2d.setColor(outer); //Outer Rectangle
g2d.draw(new RoundRectangle2D.Double(x, y, width - 2, height - 2, radii, radii));
但是,如果要使用使用4種不同顏色的更復雜的斜角邊框,則需要查看javax.swing.border.BevelBorder
的源代碼。 這將向您顯示您需要一段與此類似的代碼。
double offset = radii / 2;
//Outer
g2d.setColor(outerH);
g2d.draw(new Line2D.Double(0, offset, 0, height - 2 - offset)); //Left
g2d.draw(new Line2D.Double(1 + offset, 0, width - 2 - offset, 0)); //Top
g2d.draw(new Arc2D.Double(width - radii - 1, 0, radii, radii, 0, 90, Arc2D.OPEN)); //Top Right
g2d.draw(new Arc2D.Double(0, 0, radii, radii, 90, 90, Arc2D.OPEN)); //Top Left
//Inner
g2d.setColor(innerH);
g2d.draw(new Line2D.Double(1, 1 + offset, 1, height - 3 - offset)); //Left
g2d.draw(new Line2D.Double(2 + offset, 1, width - 3 - offset, 1)); //Top
g2d.draw(new Arc2D.Double(width - radii - 2, 1, radii, radii, 0, 90, Arc2D.OPEN)); //Top Right
g2d.draw(new Arc2D.Double(1, 1, radii, radii, 90, 90, Arc2D.OPEN)); //Top Left
//Outer
g2d.setColor(outer);
g2d.draw(new Line2D.Double(offset, height - 1, width - 1 - offset, height - 1)); //Bottom
g2d.draw(new Line2D.Double(width - 1, offset, width - 1, height - 2 - offset)); //Right
g2d.draw(new Arc2D.Double(width - radii - 1, height - radii - 1, radii, radii, 270, 90, Arc2D.OPEN)); //Bottom Right
g2d.draw(new Arc2D.Double(0, height - radii - 1, radii, radii, 180, 90, Arc2D.OPEN)); //Bottom Left
//Inner
g2d.setColor(inner);
g2d.draw(new Line2D.Double(1 + offset, height - 2, width - 2 - offset, height - 2)); //Bottom
g2d.draw(new Line2D.Double(width - 2, 1 + offset, width - 2, height - 3 - offset)); //Right
g2d.draw(new Arc2D.Double(width - radii - 2, height - radii - 2, radii, radii, 270, 90, Arc2D.OPEN)); //Bottom Right
g2d.draw(new Arc2D.Double(1, height - radii - 2, radii, radii, 180, 90, Arc2D.OPEN)); //Bottom Left
如果顏色在拐角處中途停止很重要,您也可以使用以下代碼。
double offset = radii / 2;
//Outer
g2d.setColor(outerH);
g2d.draw(new Line2D.Double(0, offset, 0, height - 2 - offset)); //Left
g2d.draw(new Line2D.Double(1 + offset, 0, width - 2 - offset, 0)); //Top
g2d.draw(new Arc2D.Double(width - radii - 1, 0, radii, radii, 45, 45, Arc2D.OPEN)); //Top Right P1
g2d.draw(new Arc2D.Double(0, 0, radii, radii, 90, 90, Arc2D.OPEN)); //Top Left
g2d.draw(new Arc2D.Double(0, height - radii - 1, radii, radii, 180, 45, Arc2D.OPEN)); //Bottom Left P1
//Inner
g2d.setColor(innerH);
g2d.draw(new Line2D.Double(1, 1 + offset, 1, height - 3 - offset)); //Left
g2d.draw(new Line2D.Double(2 + offset, 1, width - 3 - offset, 1)); //Top
g2d.draw(new Arc2D.Double(width - radii - 2, 1, radii, radii, 45, 45, Arc2D.OPEN)); //Top Right P1
g2d.draw(new Arc2D.Double(1, 1, radii, radii, 90, 90, Arc2D.OPEN)); //Top Left
g2d.draw(new Arc2D.Double(1, height - radii - 2, radii, radii, 180, 45, Arc2D.OPEN)); //Bottom Left P1
//Outer
g2d.setColor(outerS);
g2d.draw(new Line2D.Double(offset, height - 1, width - 1 - offset, height - 1)); //Bottom
g2d.draw(new Line2D.Double(width - 1, offset, width - 1, height - 2 - offset)); //Right
g2d.draw(new Arc2D.Double(width - radii - 1, 0, radii, radii, 0, 45, Arc2D.OPEN)); //Top Right P2
g2d.draw(new Arc2D.Double(width - radii - 1, height - radii - 1, radii, radii, 270, 90, Arc2D.OPEN)); //Bottom Right
g2d.draw(new Arc2D.Double(0, height - radii - 1, radii, radii, 225, 45, Arc2D.OPEN)); //Bottom Left P2
//Inner
g2d.setColor(innerS);
g2d.draw(new Line2D.Double(1 + offset, height - 2, width - 2 - offset, height - 2)); //Bottom
g2d.draw(new Line2D.Double(width - 2, 1 + offset, width - 2, height - 3 - offset)); //Right
g2d.draw(new Arc2D.Double(width - radii - 2, 1, radii, radii, 0, 45, Arc2D.OPEN)); //Top Right P2
g2d.draw(new Arc2D.Double(width - radii - 2, height - radii - 2, radii, radii, 270, 90, Arc2D.OPEN)); //Bottom Right
g2d.draw(new Arc2D.Double(1, height - radii - 2, radii, radii, 225, 45, Arc2D.OPEN)); //Bottom Left P2
當我們將所有這些放在一起時,你得到一個看起來像這樣的課程。
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.geom.Arc2D;
import java.awt.geom.Area;
import java.awt.geom.Line2D;
import java.awt.geom.RoundRectangle2D;
import javax.swing.border.AbstractBorder;
@SuppressWarnings("serial")
public class RoundedBorder extends AbstractBorder {
private int radii;
private Insets insets;
private Color innerS = new Color(166, 166, 166);
private Color outerS = new Color(116, 116, 116);
private Color innerH = Color.WHITE;
private Color outerH = Color.WHITE;
private boolean tColor = false;
public RoundedBorder(int radius) {
radii = radius;
}
public RoundedBorder(int radius, Insets i) {
radii = radius;
insets = i;
}
public RoundedBorder(int radius, Insets i, Color out, Color in) {
radii = radius;
insets = i;
innerS = in;
outerS = out;
tColor = true;
}
public RoundedBorder(int radius, Insets i, Color outH, Color inH, Color outS, Color inS) {
radii = radius;
insets = i;
innerS = inS;
outerS = outS;
innerH = inH;
outerH = outH;
}
@Override
public Insets getBorderInsets(Component c) {
if(insets != null) {
return insets;
}
return new Insets(5, 5, 5, 5);
}
@Override
public Insets getBorderInsets(Component c, Insets insets) {
return getBorderInsets(c);
}
@Override
public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
super.paintBorder(c, g, x, y, width, height);
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHints(new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON));
Shape clip = g2d.getClip();
Area rect = new Area(clip);
rect.subtract(new Area(new RoundRectangle2D.Double(x, y, width, height, radii, radii)));
g2d.setClip(rect);
g2d.setColor(c.getParent().getBackground());
g2d.fillRect(0, 0, width, height);
g2d.setClip(clip);
g2d.draw(rect);
if(!tColor) {
double offset = radii / 2;
//Outer
g2d.setColor(outerH);
g2d.draw(new Line2D.Double(0, offset, 0, height - 2 - offset)); //Left
g2d.draw(new Line2D.Double(1 + offset, 0, width - 2 - offset, 0)); //Top
g2d.draw(new Arc2D.Double(width - radii - 1, 0, radii, radii, 45, 45, Arc2D.OPEN)); //Top Right P1
g2d.draw(new Arc2D.Double(0, 0, radii, radii, 90, 90, Arc2D.OPEN)); //Top Left
g2d.draw(new Arc2D.Double(0, height - radii - 1, radii, radii, 180, 45, Arc2D.OPEN)); //Bottom Left P1
//Inner
g2d.setColor(innerH);
g2d.draw(new Line2D.Double(1, 1 + offset, 1, height - 3 - offset)); //Left
g2d.draw(new Line2D.Double(2 + offset, 1, width - 3 - offset, 1)); //Top
g2d.draw(new Arc2D.Double(width - radii - 2, 1, radii, radii, 45, 45, Arc2D.OPEN)); //Top Right P1
g2d.draw(new Arc2D.Double(1, 1, radii, radii, 90, 90, Arc2D.OPEN)); //Top Left
g2d.draw(new Arc2D.Double(1, height - radii - 2, radii, radii, 180, 45, Arc2D.OPEN)); //Bottom Left P1
//Outer
g2d.setColor(outerS);
g2d.draw(new Line2D.Double(offset, height - 1, width - 1 - offset, height - 1)); //Bottom
g2d.draw(new Line2D.Double(width - 1, offset, width - 1, height - 2 - offset)); //Right
g2d.draw(new Arc2D.Double(width - radii - 1, 0, radii, radii, 0, 45, Arc2D.OPEN)); //Top Right P2
g2d.draw(new Arc2D.Double(width - radii - 1, height - radii - 1, radii, radii, 270, 90, Arc2D.OPEN)); //Bottom Right
g2d.draw(new Arc2D.Double(0, height - radii - 1, radii, radii, 225, 45, Arc2D.OPEN)); //Bottom Left P2
//Inner
g2d.setColor(innerS);
g2d.draw(new Line2D.Double(1 + offset, height - 2, width - 2 - offset, height - 2)); //Bottom
g2d.draw(new Line2D.Double(width - 2, 1 + offset, width - 2, height - 3 - offset)); //Right
g2d.draw(new Arc2D.Double(width - radii - 2, 1, radii, radii, 0, 45, Arc2D.OPEN)); //Top Right P2
g2d.draw(new Arc2D.Double(width - radii - 2, height - radii - 2, radii, radii, 270, 90, Arc2D.OPEN)); //Bottom Right
g2d.draw(new Arc2D.Double(1, height - radii - 2, radii, radii, 225, 45, Arc2D.OPEN)); //Bottom Left P2
} else {
g2d.setColor(innerS); //Inner Rectangle
g2d.draw(new RoundRectangle2D.Double(x + 1, y + 1, width - 2, height - 2, radii, radii));
g2d.setColor(outerS); //Outer Rectangle
g2d.draw(new RoundRectangle2D.Double(x, y, width - 2, height - 2, radii, radii));
}
}
}
現在,您只需執行yourComponent.setBorder(new RoundedBorder(10));
就可以在組件上實現此類yourComponent.setBorder(new RoundedBorder(10));
或者使用RoundedBorder
類的其他構造函數之一。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.