gui: add font selection dialog

NOTICE

@@ -178,3 +178,4 @@ Icons copied from several places:
  - Eclipse Project (JDT UI) - licensed under EPL v1.0 (http://www.eclipse.org/legal/epl-v10.html)
  - famfamfam silk icon set (http://www.famfamfam.com/lab/icons/silk/) - licensed under Creative Commons Attribution 2.5 License (http://creativecommons.org/licenses/by/2.5/)
 
+JFontChooser Component - http://sourceforge.jp/projects/jfontchooser/

jadx-gui/build.gradle

@@ -7,6 +7,7 @@ dependencies {
     compile(project(":jadx-cli"))
     compile 'com.fifesoft:rsyntaxtextarea:2.5.6'
     compile 'com.google.code.gson:gson:2.3.1'
+    compile files('libs/jfontchooser-1.0.5.jar')
 }
 
 applicationDistribution.with {

jadx-gui/src/main/java/jadx/gui/settings/JadxSettings.java

@@ -2,6 +2,8 @@ package jadx.gui.settings;
 
 import jadx.cli.JadxCLIArgs;
 
+import javax.swing.JLabel;
+import java.awt.Font;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashSet;
@@ -13,6 +15,8 @@ public class JadxSettings extends JadxCLIArgs {
 	private static final String USER_HOME = System.getProperty("user.home");
 	private static final int RECENT_FILES_COUNT = 15;
 
+	private static final Font DEFAULT_FONT = new JLabel().getFont();
+
 	static final Set<String> SKIP_FIELDS = new HashSet<String>(Arrays.asList(
 			"files", "input", "outputDir", "printHelp"
 	));
@@ -22,6 +26,7 @@ public class JadxSettings extends JadxCLIArgs {
 	private boolean flattenPackage = false;
 	private boolean checkForUpdates = true;
 	private List<String> recentFiles = new ArrayList<String>();
+	private String fontStr = "";
 
 	public void sync() {
 		JadxSettingsAdapter.store(this);
@@ -126,4 +131,28 @@ public class JadxSettings extends JadxCLIArgs {
 	public void setDeobfuscationForceSave(boolean deobfuscationForceSave) {
 		this.deobfuscationForceSave = deobfuscationForceSave;
 	}
+
+	public Font getFont() {
+		if (fontStr.isEmpty()) {
+			return DEFAULT_FONT;
+		}
+		return Font.decode(fontStr);
+	}
+
+	public void setFont(Font font) {
+		this.fontStr = font.getFontName() + addStyleName(font.getStyle()) + "-" + font.getSize();
+	}
+
+	private static String addStyleName(int style) {
+		switch (style) {
+			case Font.BOLD:
+				return "-BOLD";
+			case Font.PLAIN:
+				return "-PLAIN";
+			case Font.ITALIC:
+				return "-ITALIC";
+			default:
+				return "";
+		}
+	}
 }

jadx-gui/src/main/java/jadx/gui/settings/JadxSettingsWindow.java

@@ -2,6 +2,7 @@ package jadx.gui.settings;
 
 import jadx.gui.ui.MainWindow;
 import jadx.gui.utils.NLS;
+import say.swing.JFontChooser;
 
 import javax.swing.BorderFactory;
 import javax.swing.Box;
@@ -20,6 +21,7 @@ import javax.swing.event.ChangeListener;
 import java.awt.BorderLayout;
 import java.awt.Container;
 import java.awt.Dimension;
+import java.awt.Font;
 import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
 import java.awt.GridLayout;
@@ -28,10 +30,17 @@ import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.ItemEvent;
 import java.awt.event.ItemListener;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class JadxSettingsWindow extends JDialog {
 	private static final long serialVersionUID = -1804570470377354148L;
 
+	private static final Logger LOG = LoggerFactory.getLogger(JadxSettingsWindow.class);
+
 	private final MainWindow mainWindow;
 	private final JadxSettings settings;
 	private final String startSettings;
@@ -204,6 +213,22 @@ public class JadxSettingsWindow extends JDialog {
 			}
 		});
 
+		JButton fontBtn = new JButton(NLS.str("preferences.select_font"));
+		fontBtn.addMouseListener(new MouseAdapter() {
+			@Override
+			public void mouseClicked(MouseEvent e) {
+				JFontChooser fontChooser = new JFontChooser();
+				fontChooser.setSelectedFont(settings.getFont());
+				int result = fontChooser.showDialog(JadxSettingsWindow.this);
+				if (result == JFontChooser.OK_OPTION) {
+					Font font = fontChooser.getSelectedFont();
+					LOG.info("Selected Font : {}", font);
+					settings.setFont(font);
+					mainWindow.updateFont(font);
+				}
+			}
+		});
+
 		SettingsGroup other = new SettingsGroup(NLS.str("preferences.other"));
 		other.addRow(NLS.str("preferences.check_for_updates"), update);
 		other.addRow(NLS.str("preferences.threads"), threadsCount);
@@ -212,6 +237,7 @@ public class JadxSettingsWindow extends JDialog {
 		other.addRow(NLS.str("preferences.skipResourcesDecode"), resourceDecode);
 		other.addRow(NLS.str("preferences.cfg"), cfg);
 		other.addRow(NLS.str("preferences.raw_cfg"), rawCfg);
+		other.addRow(NLS.str("preferences.font"), fontBtn);
 		return other;
 	}
 

jadx-gui/src/main/java/jadx/gui/ui/ContentArea.java

 package jadx.gui.ui;
 
 import jadx.api.CodePosition;
+import jadx.gui.settings.JadxSettings;
 import jadx.gui.treemodel.JClass;
 import jadx.gui.treemodel.JNode;
 import jadx.gui.utils.Position;
@@ -45,6 +46,7 @@ class ContentArea extends RSyntaxTextArea {
 		setBackground(BACKGROUND);
 		setAntiAliasingEnabled(true);
 		setEditable(false);
+		loadSettings();
 		Caret caret = getCaret();
 		if (caret instanceof DefaultCaret) {
 			((DefaultCaret) caret).setUpdatePolicy(DefaultCaret.ALWAYS_UPDATE);
@@ -66,6 +68,11 @@ class ContentArea extends RSyntaxTextArea {
 		setText(node.getContent());
 	}
 
+	public void loadSettings() {
+		JadxSettings settings = contentPanel.getTabbedPane().getMainWindow().getSettings();
+		setFont(settings.getFont());
+	}
+
 	private boolean isJumpToken(Token token) {
 		if (token.getType() == TokenTypes.IDENTIFIER) {
 			// fast skip

jadx-gui/src/main/java/jadx/gui/ui/MainWindow.java

@@ -48,6 +48,7 @@ import javax.swing.tree.TreeSelectionModel;
 import java.awt.BorderLayout;
 import java.awt.Component;
 import java.awt.DisplayMode;
+import java.awt.Font;
 import java.awt.GraphicsDevice;
 import java.awt.GraphicsEnvironment;
 import java.awt.event.ActionEvent;
@@ -574,6 +575,15 @@ public class MainWindow extends JFrame {
 		setSize((int) (w * WINDOW_RATIO), (int) (h * WINDOW_RATIO));
 	}
 
+	public void updateFont(Font font) {
+		setFont(font);
+		tabbedPane.loadSettings();
+	}
+
+	public JadxSettings getSettings() {
+		return settings;
+	}
+
 	private class OpenListener implements ActionListener {
 		public void actionPerformed(ActionEvent event) {
 			openFile();

jadx-gui/src/main/java/jadx/gui/ui/TabbedPane.java

@@ -234,4 +234,10 @@ class TabbedPane extends JTabbedPane {
 			closeCodePanel(panel);
 		}
 	}
+
+	public void loadSettings() {
+		for (ContentPanel panel : openTabs.values()) {
+			panel.getContentArea().loadSettings();
+		}
+	}
 }

jadx-gui/src/main/resources/i18n/Messages_en_US.properties

@@ -55,6 +55,8 @@ preferences.skipResourcesDecode=Don't decode resources
 preferences.threads=Processing threads count
 preferences.cfg=Generate methods CFG graphs (in 'dot' format)
 preferences.raw_cfg=Generate RAW CFG graphs
+preferences.font=Editor font
+preferences.select_font=Select
 preferences.deobfuscation_on=Enable deobfuscation
 preferences.deobfuscation_force=Force rewrite deobfuscation map file
 preferences.deobfuscation_min_len=Minimum name length