GUI Improvements

purpur-server/src/main/java/org/purpurmc/purpur/gui/GUIColor.java

@@ -0,0 +1,58 @@
+package org.purpurmc.purpur.gui;
+
+import net.md_5.bungee.api.ChatColor;
+
+import java.awt.Color;
+import java.util.HashMap;
+import java.util.Map;
+
+public enum GUIColor {
+    BLACK(ChatColor.BLACK, new Color(0x000000)),
+    DARK_BLUE(ChatColor.DARK_BLUE, new Color(0x0000AA)),
+    DARK_GREEN(ChatColor.DARK_GREEN, new Color(0x00AA00)),
+    DARK_AQUA(ChatColor.DARK_AQUA, new Color(0x009999)),
+    DARK_RED(ChatColor.DARK_RED, new Color(0xAA0000)),
+    DARK_PURPLE(ChatColor.DARK_PURPLE, new Color(0xAA00AA)),
+    GOLD(ChatColor.GOLD, new Color(0xBB8800)),
+    GRAY(ChatColor.GRAY, new Color(0x888888)),
+    DARK_GRAY(ChatColor.DARK_GRAY, new Color(0x444444)),
+    BLUE(ChatColor.BLUE, new Color(0x5555FF)),
+    GREEN(ChatColor.GREEN, new Color(0x55FF55)),
+    AQUA(ChatColor.AQUA, new Color(0x55DDDD)),
+    RED(ChatColor.RED, new Color(0xFF5555)),
+    LIGHT_PURPLE(ChatColor.LIGHT_PURPLE, new Color(0xFF55FF)),
+    YELLOW(ChatColor.YELLOW, new Color(0xFFBB00)),
+    WHITE(ChatColor.WHITE, new Color(0xBBBBBB));
+
+    private final ChatColor chat;
+    private final Color color;
+
+    private static final Map<ChatColor, GUIColor> BY_CHAT = new HashMap<>();
+
+    GUIColor(ChatColor chat, Color color) {
+        this.chat = chat;
+        this.color = color;
+    }
+
+    public Color getColor() {
+        return color;
+    }
+
+    public ChatColor getChatColor() {
+        return chat;
+    }
+
+    public String getCode() {
+        return chat.toString();
+    }
+
+    public static GUIColor getColor(ChatColor chat) {
+        return BY_CHAT.get(chat);
+    }
+
+    static {
+        for (GUIColor color : values()) {
+            BY_CHAT.put(color.chat, color);
+        }
+    }
+}

purpur-server/src/main/java/org/purpurmc/purpur/gui/JColorTextPane.java

@@ -0,0 +1,83 @@
+package org.purpurmc.purpur.gui;
+
+import com.google.common.collect.Sets;
+import javax.swing.UIManager;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.api.chat.TextComponent;
+
+import javax.swing.JTextPane;
+import javax.swing.Timer;
+import javax.swing.text.AttributeSet;
+import javax.swing.text.BadLocationException;
+import javax.swing.text.SimpleAttributeSet;
+import javax.swing.text.StyleConstants;
+import javax.swing.text.StyleContext;
+import java.util.Set;
+
+public class JColorTextPane extends JTextPane {
+    private static final GUIColor DEFAULT_COLOR;
+    static {
+        DEFAULT_COLOR = UIManager.getSystemLookAndFeelClassName().equals("com.sun.java.swing.plaf.gtk.GTKLookAndFeel")
+            ? GUIColor.WHITE : GUIColor.BLACK;
+    }
+
+
+    public void append(String msg) {
+        // TODO: update to use adventure instead
+        BaseComponent[] components = TextComponent.fromLegacyText(DEFAULT_COLOR.getCode() + msg, DEFAULT_COLOR.getChatColor());
+        for (BaseComponent component : components) {
+            String text = component.toPlainText();
+            if (text == null || text.isEmpty()) {
+                continue;
+            }
+
+            GUIColor guiColor = GUIColor.getColor(component.getColor());
+
+            StyleContext context = StyleContext.getDefaultStyleContext();
+            AttributeSet attr = context.addAttribute(SimpleAttributeSet.EMPTY, StyleConstants.Foreground, guiColor.getColor());
+            attr = context.addAttribute(attr, StyleConstants.CharacterConstants.Bold, component.isBold() || guiColor != DEFAULT_COLOR);
+            attr = context.addAttribute(attr, StyleConstants.CharacterConstants.Italic, component.isItalic());
+            attr = context.addAttribute(attr, StyleConstants.CharacterConstants.Underline, component.isUnderlined());
+            attr = context.addAttribute(attr, StyleConstants.CharacterConstants.StrikeThrough, component.isStrikethrough());
+            //attr = context.addAttribute(attr, StyleConstants.CharacterConstants.Blink, component.isObfuscated()); // no such thing as Blink, sadly
+
+            try {
+                int pos = getDocument().getLength();
+                getDocument().insertString(pos, text, attr);
+
+                if (component.isObfuscated()) {
+                    // dirty hack to blink some text
+                    Blink blink = new Blink(pos, text.length(), attr, context.addAttribute(attr, StyleConstants.Foreground, getBackground()));
+                    BLINKS.add(blink);
+                }
+            } catch (BadLocationException ignore) {
+            }
+        }
+    }
+
+    private static final Set<Blink> BLINKS = Sets.newHashSet();
+    private static boolean SYNC_BLINK;
+
+    static {
+        new Timer(500, e -> {
+            SYNC_BLINK = !SYNC_BLINK;
+            BLINKS.forEach(Blink::blink);
+        }).start();
+    }
+
+    public class Blink {
+        private final int start, length;
+        private final AttributeSet attr1, attr2;
+
+        private Blink(int start, int length, AttributeSet attr1, AttributeSet attr2) {
+            this.start = start;
+            this.length = length;
+            this.attr1 = attr1;
+            this.attr2 = attr2;
+        }
+
+        private void blink() {
+            getStyledDocument().setCharacterAttributes(start, length, SYNC_BLINK ? attr1 : attr2, true);
+        }
+    }
+}