ToggleButton: make toggle button square if it has an icon but no text or text is "..." or a single character

CHANGELOG.md

@@ -13,6 +13,8 @@ FlatLaf Change Log
   #59, PR #62)
 - CheckBox and RadioButton: Do not fill background if `contentAreaFilled` is
   `false`. (issue #58, PR #63)
+- ToggleButton: Make toggle button square if it has an icon but no text or text
+  is "..." or a single character.
 
 
 ## 0.26

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatButtonBorder.java

@@ -23,7 +23,7 @@ import java.awt.GradientPaint;
 import java.awt.Graphics;
 import java.awt.Insets;
 import java.awt.Paint;
-import javax.swing.JButton;
+import javax.swing.AbstractButton;
 import javax.swing.UIManager;
 import javax.swing.plaf.UIResource;
 
@@ -98,7 +98,7 @@ public class FlatButtonBorder
 		insets = super.getBorderInsets( c, insets );
 
 		// use smaller left and right insets for icon-only buttons (so that they are square)
-		if( FlatButtonUI.isIconOnlyButton( c ) && ((JButton)c).getMargin() instanceof UIResource )
+		if( FlatButtonUI.isIconOnlyButton( c ) && ((AbstractButton)c).getMargin() instanceof UIResource )
 			insets.left = insets.right = Math.min( insets.top, insets.bottom );
 
 		return insets;

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatButtonUI.java

@@ -34,6 +34,7 @@ import javax.swing.ButtonModel;
 import javax.swing.Icon;
 import javax.swing.JButton;
 import javax.swing.JComponent;
+import javax.swing.JToggleButton;
 import javax.swing.JToolBar;
 import javax.swing.LookAndFeel;
 import javax.swing.UIManager;
@@ -222,11 +223,11 @@ public class FlatButtonUI
 	}
 
 	static boolean isIconOnlyButton( Component c ) {
-		if( !(c instanceof JButton) )
+		if( !(c instanceof JButton) && !(c instanceof JToggleButton) )
 			return false;
 
-		Icon icon = ((JButton)c).getIcon();
-		String text = ((JButton)c).getText();
+		Icon icon = ((AbstractButton)c).getIcon();
+		String text = ((AbstractButton)c).getText();
 		return (icon != null && (text == null || text.isEmpty())) ||
 			(icon == null && text != null && ("...".equals( text ) || text.length() == 1));
 	}

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatComponentsTest.java

@@ -87,13 +87,17 @@ public class FlatComponentsTest
 		JToggleButton toggleButton10 = new JToggleButton();
 		JToggleButton toggleButton3 = new JToggleButton();
 		JToggleButton toggleButton4 = new JToggleButton();
-		JToggleButton toggleButton5 = new JToggleButton();
-		JToggleButton toggleButton8 = new JToggleButton();
+		JToggleButton toggleButton11 = new JToggleButton();
+		JToggleButton toggleButton12 = new JToggleButton();
+		JToggleButton toggleButton13 = new JToggleButton();
+		JToggleButton toggleButton14 = new JToggleButton();
 		JLabel checkBoxLabel = new JLabel();
 		JCheckBox checkBox1 = new JCheckBox();
 		JCheckBox checkBox2 = new JCheckBox();
 		JCheckBox checkBox3 = new JCheckBox();
 		JCheckBox checkBox4 = new JCheckBox();
+		JToggleButton toggleButton5 = new JToggleButton();
+		JToggleButton toggleButton8 = new JToggleButton();
 		JLabel radioButtonLabel = new JLabel();
 		JRadioButton radioButton1 = new JRadioButton();
 		JRadioButton radioButton2 = new JRadioButton();
@@ -203,6 +207,9 @@ public class FlatComponentsTest
 		JButton button7 = new JButton();
 		JButton button8 = new JButton();
 		JToggleButton toggleButton6 = new JToggleButton();
+		JToggleButton toggleButton15 = new JToggleButton();
+		JToggleButton toggleButton16 = new JToggleButton();
+		JToggleButton toggleButton17 = new JToggleButton();
 
 		//======== this ========
 		setLayout(new MigLayout(
@@ -353,18 +360,25 @@ public class FlatComponentsTest
 		toggleButton4.setSelected(true);
 		add(toggleButton4, "cell 4 2");
 
-		//---- toggleButton5 ----
-		toggleButton5.setText("tab");
-		toggleButton5.putClientProperty("JButton.buttonType", "tab");
-		toggleButton5.setSelected(true);
-		add(toggleButton5, "cell 5 2");
+		//---- toggleButton11 ----
+		toggleButton11.setIcon(UIManager.getIcon("Tree.closedIcon"));
+		toggleButton11.setSelected(true);
+		add(toggleButton11, "cell 5 2");
 
-		//---- toggleButton8 ----
-		toggleButton8.setText("tab");
-		toggleButton8.putClientProperty("JButton.buttonType", "tab");
-		toggleButton8.setEnabled(false);
-		toggleButton8.setSelected(true);
-		add(toggleButton8, "cell 5 2");
+		//---- toggleButton12 ----
+		toggleButton12.setText("...");
+		toggleButton12.setSelected(true);
+		add(toggleButton12, "cell 5 2");
+
+		//---- toggleButton13 ----
+		toggleButton13.setText("\u2026");
+		toggleButton13.setSelected(true);
+		add(toggleButton13, "cell 5 2");
+
+		//---- toggleButton14 ----
+		toggleButton14.setText("#");
+		toggleButton14.setSelected(true);
+		add(toggleButton14, "cell 5 2");
 
 		//---- checkBoxLabel ----
 		checkBoxLabel.setText("JCheckBox");
@@ -392,6 +406,19 @@ public class FlatComponentsTest
 		checkBox4.setEnabled(false);
 		add(checkBox4, "cell 4 3");
 
+		//---- toggleButton5 ----
+		toggleButton5.setText("tab");
+		toggleButton5.putClientProperty("JButton.buttonType", "tab");
+		toggleButton5.setSelected(true);
+		add(toggleButton5, "cell 5 3");
+
+		//---- toggleButton8 ----
+		toggleButton8.setText("tab");
+		toggleButton8.putClientProperty("JButton.buttonType", "tab");
+		toggleButton8.setEnabled(false);
+		toggleButton8.setSelected(true);
+		add(toggleButton8, "cell 5 3");
+
 		//---- radioButtonLabel ----
 		radioButtonLabel.setText("JRadioButton:");
 		add(radioButtonLabel, "cell 0 4");
@@ -979,6 +1006,21 @@ public class FlatComponentsTest
 			toggleButton6.setIcon(UIManager.getIcon("Tree.leafIcon"));
 			toggleButton6.setSelected(true);
 			toolBar1.add(toggleButton6);
+
+			//---- toggleButton15 ----
+			toggleButton15.setIcon(UIManager.getIcon("FileView.computerIcon"));
+			toggleButton15.setSelected(true);
+			toolBar1.add(toggleButton15);
+
+			//---- toggleButton16 ----
+			toggleButton16.setIcon(UIManager.getIcon("FileView.floppyDriveIcon"));
+			toggleButton16.setSelected(true);
+			toolBar1.add(toggleButton16);
+
+			//---- toggleButton17 ----
+			toggleButton17.setIcon(UIManager.getIcon("FileView.hardDriveIcon"));
+			toggleButton17.setSelected(true);
+			toolBar1.add(toggleButton17);
 		}
 		add(toolBar1, "cell 1 23 3 1,growx");
 		// JFormDesigner - End of component initialization  //GEN-END:initComponents

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatComponentsTest.jfd

@@ -98,7 +98,7 @@ new FormModel {
 			} )
 			add( new FormComponent( "javax.swing.JButton" ) {
 				name: "button13"
-				"icon": new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
+				"icon": &SwingIcon0 new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 5 1"
 			} )
@@ -170,18 +170,29 @@ new FormModel {
 				"value": "cell 4 2"
 			} )
 			add( new FormComponent( "javax.swing.JToggleButton" ) {
-				name: "toggleButton5"
-				"text": "tab"
-				"$client.JButton.buttonType": "tab"
+				name: "toggleButton11"
+				"icon": #SwingIcon0
 				"selected": true
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 5 2"
 			} )
 			add( new FormComponent( "javax.swing.JToggleButton" ) {
-				name: "toggleButton8"
-				"text": "tab"
-				"$client.JButton.buttonType": "tab"
-				"enabled": false
+				name: "toggleButton12"
+				"text": "..."
+				"selected": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 2"
+			} )
+			add( new FormComponent( "javax.swing.JToggleButton" ) {
+				name: "toggleButton13"
+				"text": "…"
+				"selected": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 2"
+			} )
+			add( new FormComponent( "javax.swing.JToggleButton" ) {
+				name: "toggleButton14"
+				"text": "#"
 				"selected": true
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 5 2"
@@ -222,6 +233,23 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 4 3"
 			} )
+			add( new FormComponent( "javax.swing.JToggleButton" ) {
+				name: "toggleButton5"
+				"text": "tab"
+				"$client.JButton.buttonType": "tab"
+				"selected": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 3"
+			} )
+			add( new FormComponent( "javax.swing.JToggleButton" ) {
+				name: "toggleButton8"
+				"text": "tab"
+				"$client.JButton.buttonType": "tab"
+				"enabled": false
+				"selected": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 5 3"
+			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "radioButtonLabel"
 				"text": "JRadioButton:"
@@ -784,18 +812,18 @@ new FormModel {
 				"orientation": 1
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "button9"
-					"icon": &SwingIcon0 new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
+					"icon": &SwingIcon1 new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
 				} )
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "button10"
-					"icon": &SwingIcon1 new com.jformdesigner.model.SwingIcon( 2, "Tree.openIcon" )
+					"icon": &SwingIcon2 new com.jformdesigner.model.SwingIcon( 2, "Tree.openIcon" )
 				} )
 				add( new FormComponent( "javax.swing.JToolBar$Separator" ) {
 					name: "separator5"
 				} )
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "button11"
-					"icon": &SwingIcon2 new com.jformdesigner.model.SwingIcon( 2, "Tree.leafIcon" )
+					"icon": &SwingIcon3 new com.jformdesigner.model.SwingIcon( 2, "Tree.leafIcon" )
 				} )
 				add( new FormComponent( "javax.swing.JToggleButton" ) {
 					name: "toggleButton7"
@@ -963,18 +991,18 @@ new FormModel {
 				name: "toolBar1"
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "button4"
-					"icon": #SwingIcon0
+					"icon": #SwingIcon1
 				} )
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "button6"
-					"icon": #SwingIcon1
+					"icon": #SwingIcon2
 				} )
 				add( new FormComponent( "javax.swing.JToolBar$Separator" ) {
 					name: "separator3"
 				} )
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "button7"
-					"icon": #SwingIcon2
+					"icon": #SwingIcon3
 				} )
 				add( new FormComponent( "javax.swing.JToolBar$Separator" ) {
 					name: "separator4"
@@ -990,6 +1018,21 @@ new FormModel {
 					"icon": new com.jformdesigner.model.SwingIcon( 2, "Tree.leafIcon" )
 					"selected": true
 				} )
+				add( new FormComponent( "javax.swing.JToggleButton" ) {
+					name: "toggleButton15"
+					"icon": new com.jformdesigner.model.SwingIcon( 2, "FileView.computerIcon" )
+					"selected": true
+				} )
+				add( new FormComponent( "javax.swing.JToggleButton" ) {
+					name: "toggleButton16"
+					"icon": new com.jformdesigner.model.SwingIcon( 2, "FileView.floppyDriveIcon" )
+					"selected": true
+				} )
+				add( new FormComponent( "javax.swing.JToggleButton" ) {
+					name: "toggleButton17"
+					"icon": new com.jformdesigner.model.SwingIcon( 2, "FileView.hardDriveIcon" )
+					"selected": true
+				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 23 3 1,growx"
 			} )