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Demo: made hint popups look nicer (balloon with arrow and shadow)

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This commit is contained in:
Karl Tauber
2021-11-16 10:49:53 +01:00
parent b40532a830
commit df905a1d73
1 changed files with 148 additions and 13 deletions
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161
flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/HintManager.java
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@@ -18,13 +18,15 @@ package com.formdev.flatlaf.demo;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.geom.Area;
import java.awt.geom.RoundRectangle2D;
import java.util.ArrayList;
import java.util.List;
import javax.swing.*;
import javax.swing.border.LineBorder;
import javax.swing.border.Border;
import com.formdev.flatlaf.FlatLaf;
import com.formdev.flatlaf.ui.FlatDropShadowBorder;
import com.formdev.flatlaf.ui.FlatPopupMenuBorder;
import com.formdev.flatlaf.ui.FlatEmptyBorder;
import com.formdev.flatlaf.ui.FlatUIUtils;
import com.formdev.flatlaf.util.UIScale;
import net.miginfocom.swing.*;
@@ -89,6 +91,9 @@ class HintManager
initComponents();
setOpaque( false );
updateBalloonBorder();
hintLabel.setText( "<html>" + hint.message + "</html>" );
// grab all mouse events to avoid that components overlapped
@@ -100,14 +105,28 @@ class HintManager
public void updateUI() {
super.updateUI();
if( UIManager.getLookAndFeel() instanceof FlatLaf ) {
if( UIManager.getLookAndFeel() instanceof FlatLaf )
setBackground( UIManager.getColor( "HintPanel.backgroundColor" ) );
setBorder( new FlatPopupMenuBorder() );
} else {
else {
// using nonUIResource() because otherwise Nimbus does not fill the background
setBackground( FlatUIUtils.nonUIResource( UIManager.getColor( "info" ) ) );
setBorder( new LineBorder( Color.gray ) );
}
if( hint != null )
updateBalloonBorder();
}
private void updateBalloonBorder() {
int direction;
switch( hint.position ) {
case SwingConstants.LEFT: direction = SwingConstants.RIGHT; break;
case SwingConstants.TOP: direction = SwingConstants.BOTTOM; break;
case SwingConstants.RIGHT: direction = SwingConstants.LEFT; break;
case SwingConstants.BOTTOM: direction = SwingConstants.TOP; break;
default: throw new IllegalArgumentException();
}
setBorder( new BalloonBorder( direction, FlatUIUtils.getUIColor( "PopupMenu.borderColor", Color.gray ) ) );
}
void showHint() {
@@ -123,13 +142,6 @@ class HintManager
public void updateUI() {
super.updateUI();
if( UIManager.getLookAndFeel() instanceof FlatLaf ) {
setBorder( new FlatDropShadowBorder(
UIManager.getColor( "Popup.dropShadowColor" ),
UIManager.getInsets( "Popup.dropShadowInsets" ),
FlatUIUtils.getUIFloat( "Popup.dropShadowOpacity", 0.5f ) ) );
}
// use invokeLater because at this time the UI delegates
// of child components are not yet updated
EventQueue.invokeLater( () -> {
@@ -226,4 +238,127 @@ class HintManager
private JButton gotItButton;
// JFormDesigner - End of variables declaration //GEN-END:variables
}
//---- class BalloonBorder ------------------------------------------------
private static class BalloonBorder
extends FlatEmptyBorder
{
private static int ARC = 8;
private static int ARROW_XY = 16;
private static int ARROW_SIZE = 8;
private static int SHADOW_SIZE = 6;
private static int SHADOW_TOP_SIZE = 3;
private static int SHADOW_SIZE2 = SHADOW_SIZE + 2;
private final int direction;
private final Color borderColor;
private final Border shadowBorder;
public BalloonBorder( int direction, Color borderColor ) {
super( 1 + SHADOW_TOP_SIZE, 1 + SHADOW_SIZE, 1 + SHADOW_SIZE, 1 + SHADOW_SIZE );
this.direction = direction;
this.borderColor = borderColor;
switch( direction ) {
case SwingConstants.LEFT: left += ARROW_SIZE; break;
case SwingConstants.TOP: top += ARROW_SIZE; break;
case SwingConstants.RIGHT: right += ARROW_SIZE; break;
case SwingConstants.BOTTOM: bottom += ARROW_SIZE; break;
}
shadowBorder = UIManager.getLookAndFeel() instanceof FlatLaf
? new FlatDropShadowBorder(
UIManager.getColor( "Popup.dropShadowColor" ),
new Insets( SHADOW_SIZE2, SHADOW_SIZE2, SHADOW_SIZE2, SHADOW_SIZE2 ),
FlatUIUtils.getUIFloat( "Popup.dropShadowOpacity", 0.5f ) )
: null;
}
@Override
public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
Graphics2D g2 = (Graphics2D) g.create();
try {
FlatUIUtils.setRenderingHints( g2 );
g2.translate( x, y );
// shadow coordinates
int sx = 0;
int sy = 0;
int sw = width;
int sh = height;
int arrowSize = UIScale.scale( ARROW_SIZE );
switch( direction ) {
case SwingConstants.LEFT: sx += arrowSize; sw -= arrowSize; break;
case SwingConstants.TOP: sy += arrowSize; sh -= arrowSize; break;
case SwingConstants.RIGHT: sw -= arrowSize; break;
case SwingConstants.BOTTOM: sh -= arrowSize; break;
}
// paint shadow
if( shadowBorder != null )
shadowBorder.paintBorder( c, g2, sx, sy, sw, sh );
// create balloon shape
int bx = UIScale.scale( SHADOW_SIZE );
int by = UIScale.scale( SHADOW_TOP_SIZE );
int bw = width - UIScale.scale( SHADOW_SIZE + SHADOW_SIZE );
int bh = height - UIScale.scale( SHADOW_TOP_SIZE + SHADOW_SIZE );
g2.translate( bx, by );
Shape shape = createBalloonShape( bw, bh );
// fill balloon background
g2.setColor( c.getBackground() );
g2.fill( shape );
// paint balloon border
g2.setColor( borderColor );
g2.setStroke( new BasicStroke( UIScale.scale( 1f ) ) );
g2.draw( shape );
} finally {
g2.dispose();
}
}
private Shape createBalloonShape( int width, int height ) {
int arc = UIScale.scale( ARC );
int xy = UIScale.scale( ARROW_XY );
int awh = UIScale.scale( ARROW_SIZE );
Shape rect;
Shape arrow;
switch( direction ) {
case SwingConstants.LEFT:
rect = new RoundRectangle2D.Float( awh, 0, width - 1 - awh, height - 1, arc, arc );
arrow = FlatUIUtils.createPath( awh,xy, 0,xy+awh, awh,xy+awh+awh );
break;
case SwingConstants.TOP:
rect = new RoundRectangle2D.Float( 0, awh, width - 1, height - 1 - awh, arc, arc );
arrow = FlatUIUtils.createPath( xy,awh, xy+awh,0, xy+awh+awh,awh );
break;
case SwingConstants.RIGHT:
rect = new RoundRectangle2D.Float( 0, 0, width - 1 - awh, height - 1, arc, arc );
int x = width - 1 - awh;
arrow = FlatUIUtils.createPath( x,xy, x+awh,xy+awh, x,xy+awh+awh );
break;
case SwingConstants.BOTTOM:
rect = new RoundRectangle2D.Float( 0, 0, width - 1, height - 1 - awh, arc, arc );
int y = height - 1 - awh;
arrow = FlatUIUtils.createPath( xy,y, xy+awh,y+awh, xy+awh+awh,y );
break;
default:
throw new RuntimeException();
}
Area area = new Area( rect );
area.add( new Area( arrow ) );
return area;
}
}
}