Add an About screen with the build version; drop the animated background

wallet-ui/build.gradle

@@ -27,6 +27,53 @@ test {
     useJUnitPlatform()
 }
 
+// The version shown in Settings > About comes from gradle.properties at BUILD
+// time. A hand-edited constant is wrong the moment someone forgets to bump it,
+// and the version is the first thing a bug report quotes.
+//
+// Generated as Java SOURCE, not a properties resource: native-image includes
+// only resources that are explicitly registered, so a resource would work in the
+// jar build and silently come back null in the native one — the version would be
+// missing exactly where it is hardest to notice.
+def buildInfoDir = layout.buildDirectory.dir('generated/sources/buildinfo')
+
+def generateBuildInfo = tasks.register('generateBuildInfo') {
+    description = 'Generate BuildInfo.java from gradle.properties'
+    def walletVersion = project.version.toString()
+    def nodeVersion = (rootProject.findProperty('yanoVersion') ?: 'unknown').toString()
+    def outDir = buildInfoDir
+    inputs.property('walletVersion', walletVersion)
+    inputs.property('nodeVersion', nodeVersion)
+    outputs.dir(outDir)
+    doLast {
+        def pkg = new File(outDir.get().asFile, 'com/bloxbean/cardano/yano/wallet/ui')
+        pkg.mkdirs()
+        new File(pkg, 'BuildInfo.java').text = """package com.bloxbean.cardano.yano.wallet.ui;
+
+/**
+ * Build-time facts, generated by :wallet-ui:generateBuildInfo from
+ * gradle.properties. Do not edit — your changes are overwritten on every build.
+ */
+public final class BuildInfo {
+
+    /** The wallet's version, e.g. "0.1.0-pre4". */
+    public static final String WALLET_VERSION = "${walletVersion}";
+
+    /** The managed Yano node this build is pinned to. */
+    public static final String NODE_VERSION = "${nodeVersion}";
+
+    private BuildInfo() {
+    }
+}
+"""
+    }
+}
+
+// Registering the provider (not the directory) makes compileJava depend on the
+// generating task, so a plain `./gradlew build` cannot compile a stale copy.
+sourceSets.main.java.srcDir generateBuildInfo
+
+
 def detectJavafxPlatform() {
     def osName = System.getProperty('os.name').toLowerCase()
     def osArch = System.getProperty('os.arch').toLowerCase()

wallet-ui/src/main/java/com/bloxbean/cardano/yano/wallet/ui/Shell.java

@@ -5,14 +5,13 @@
 import com.bloxbean.cardano.yano.wallet.ui.screens.HistoryScreen;
 import com.bloxbean.cardano.yano.wallet.ui.screens.ReceiveScreen;
 import com.bloxbean.cardano.yano.wallet.ui.screens.SendScreen;
+import com.bloxbean.cardano.yano.wallet.ui.screens.AboutScreen;
 import com.bloxbean.cardano.yano.wallet.ui.screens.SettingsScreen;
 import com.bloxbean.cardano.yano.wallet.ui.screens.GovernanceScreen;
 import com.bloxbean.cardano.yano.wallet.ui.screens.ProposalsScreen;
 import com.bloxbean.cardano.yano.wallet.ui.screens.LiveScreen;
 import com.bloxbean.cardano.yano.wallet.ui.screens.StakingScreen;
-import com.bloxbean.cardano.yano.wallet.ui.live.LiveBlocksView;
 import com.bloxbean.cardano.yano.wallet.ui.live.LiveChainModel;
-import com.bloxbean.cardano.yano.wallet.ui.live.LivePrefs;
 import com.bloxbean.cardano.yano.wallet.ui.util.Icons;
 import com.bloxbean.cardano.yano.wallet.ui.util.Ui;
 import javafx.animation.KeyFrame;
@@ -64,7 +63,6 @@ public class Shell {
     private final Tooltip syncTooltip = new Tooltip();
     private final Timeline statusPoller;
     private final LiveChainModel liveModel = new LiveChainModel();
-    private LiveBlocksView ambient;
     private String active;
     // Delta tracking to tell "advancing" from "stalled" during catch-up without
     // any network-tip math: remember the highest block seen and when it last rose.
@@ -110,6 +108,9 @@ public Shell(WalletUiController controller, Runnable onLock,
         registry.put("Proposals", () -> new ProposalsScreen(controller, overlay));
         registry.put("Live", () -> new LiveScreen(controller, overlay, liveModel));
         registry.put("Settings", () -> new SettingsScreen(controller, overlay, this::changeNetwork));
+        // Takes no controller: build facts come from BuildInfo, generated at build
+        // time, so this screen works even when nothing else does.
+        registry.put("About", () -> new AboutScreen(overlay));
 
         statusPoller = new Timeline(new KeyFrame(Duration.seconds(5), e -> tick()));
         statusPoller.setCycleCount(Timeline.INDEFINITE);
@@ -119,14 +120,8 @@ public StackPane root() {
         BorderPane frame = new BorderPane();
         frame.getStyleClass().add("shell");
         frame.setLeft(buildSidebar());
-        // Ambient live-chain background sits behind every screen; screens have
-        // transparent gaps, so it shows through without touching their styling.
-        ambient = new LiveBlocksView(liveModel, true);
-        StackPane center = new StackPane(ambient, content);
-        frame.setCenter(center);
+        frame.setCenter(content);
         overlay.getChildren().add(frame);
-        syncAmbient();
-        LivePrefs.setOnChange(() -> javafx.application.Platform.runLater(this::syncAmbient));
         navigate("Dashboard");
         statusPoller.play();
         pollStatus();
@@ -135,27 +130,11 @@ public StackPane root() {
 
     public void dispose() {
         statusPoller.stop();
-        LivePrefs.setOnChange(null);
-        if (ambient != null) {
-            ambient.dispose();
-        }
-    }
-
-    /** Reflect the ambient-background toggle: show/hide + start/stop the animation. */
-    private void syncAmbient() {
-        boolean on = LivePrefs.ambientEnabled();
-        if (ambient != null) {
-            ambient.setVisible(on);
-            ambient.setManaged(on);
-            ambient.setActive(on);
-        }
-        if (on) {
-            pollLiveChain();
-        }
     }
 
+    /** The Live page is the only thing that consumes chain-tip data now. */
     private boolean liveNeeded() {
-        return LivePrefs.ambientEnabled() || "Live".equals(active);
+        return "Live".equals(active);
     }
 
     private void pollLiveChain() {
@@ -216,6 +195,7 @@ private Node buildSidebar() {
         addNav(side, "Proposals", Icons.PROPOSALS);
         addNav(side, "Live", Icons.LIVE);
         addNav(side, "Settings", Icons.SETTINGS);
+        addNav(side, "About", Icons.ABOUT);
 
         Region grow = new Region();
         VBox.setVgrow(grow, Priority.ALWAYS);

wallet-ui/src/main/java/com/bloxbean/cardano/yano/wallet/ui/contract/WalletUiController.java

@@ -99,7 +99,7 @@ public interface WalletUiController {
     String dataDir();
 
     /**
-     * Live chain-tip snapshot for the animated "Live" view / ambient background.
+     * Live chain-tip snapshot for the animated "Live" view.
      * Best-effort: returns {@link LiveChainView#unreachable()} rather than throwing
      * when the node is unavailable, so the visualization degrades quietly.
      */

wallet-ui/src/main/java/com/bloxbean/cardano/yano/wallet/ui/live/LiveBlocksView.java

@@ -22,13 +22,12 @@
 /**
  * A Canvas that animates the chain tip as a train of block tiles sliding in from
  * the right — newest at the leading edge, older easing left, each tile brightening
- * with its transaction count. Reused in two modes: {@code ambient} (dim, behind
- * the shell content) and full (the dedicated Live page).
+ * with its transaction count.
  *
- * <p>Runs an {@link AnimationTimer} only while it is {@link #setActive active},
- * attached to a scene, AND its window is focused — so it costs nothing in the
- * background or when the feature is off. All listeners are removed on detach /
- * {@link #dispose}, so it does not leak across shell rebuilds.
+ * <p>The {@code ambient} mode (dim, mouse-transparent, drawn behind every
+ * screen) is no longer reachable: the wallet dropped the animated background
+ * setting it existed for. The flag is kept because unpicking it means editing
+ * the drawing code the Live page depends on, for no user-visible gain.
  */
 public final class LiveBlocksView extends Region {
     private static final double TILE_W = 104;    // full-mode block card (px)
@@ -76,7 +75,7 @@ public void handle(long now) {
         sceneProperty().addListener((o, oldScene, newScene) -> onSceneChanged(newScene));
     }
 
-    /** External gate: the ambient toggle, or the Live page being on screen. */
+    /** External gate: whether the Live page is on screen. */
     public void setActive(boolean on) {
         if (on == active) {
             return;

wallet-ui/src/main/java/com/bloxbean/cardano/yano/wallet/ui/screens/AboutScreen.java

@@ -0,0 +1,123 @@
+package com.bloxbean.cardano.yano.wallet.ui.screens;
+
+import com.bloxbean.cardano.yano.wallet.ui.BuildInfo;
+import com.bloxbean.cardano.yano.wallet.ui.Shell;
+import com.bloxbean.cardano.yano.wallet.ui.util.Icons;
+import com.bloxbean.cardano.yano.wallet.ui.util.Ui;
+import javafx.geometry.Insets;
+import javafx.scene.Node;
+import javafx.scene.control.Button;
+import javafx.scene.control.Hyperlink;
+import javafx.scene.control.Label;
+import javafx.scene.control.ScrollPane;
+import javafx.scene.layout.StackPane;
+import javafx.scene.layout.VBox;
+
+/**
+ * Which build this is.
+ *
+ * <p>A top-level screen rather than a card inside Settings: the first question
+ * on any bug report is "which version?", and someone answering it should not
+ * have to know that versions live under Settings.
+ *
+ * <p>Every value comes from {@link BuildInfo}, generated from gradle.properties
+ * at build time, so this cannot drift from the release it shipped in.
+ */
+public class AboutScreen implements Shell.Screen {
+    private static final String REPO = "https://github.com/bloxbean/yano-wallet";
+
+    private final StackPane overlay;
+    private final ScrollPane root;
+
+    public AboutScreen(StackPane overlay) {
+        this.overlay = overlay;
+        this.root = build();
+    }
+
+    private ScrollPane build() {
+        Label title = new Label("About");
+        title.getStyleClass().add("screen-title");
+
+        VBox versionCard = Ui.card("Version",
+                mono("Yano Wallet " + BuildInfo.WALLET_VERSION),
+                mono("Managed node: Yano " + BuildInfo.NODE_VERSION),
+                mono("Runtime: " + runtimeDescription()),
+                mono("Platform: " + platformDescription()),
+                Ui.muted("Include these details in a bug report — they identify the exact "
+                        + "build, which nothing else in the app can tell you."),
+                copyButton());
+
+        Hyperlink repo = new Hyperlink(REPO);
+        repo.setOnAction(e -> {
+            Ui.copyToClipboard(REPO);
+            Ui.toast(overlay, "Link copied", false);
+        });
+
+        VBox projectCard = Ui.card("Project",
+                Ui.muted("A full-node Cardano wallet: it runs its own Yano node, so balances "
+                        + "and history come from a chain you validated yourself."),
+                repo,
+                Ui.muted("MIT licensed. Under active development and not audited — use test "
+                        + "networks, and never a recovery phrase holding real funds."));
+
+        VBox column = new VBox(16, title, versionCard, projectCard);
+        column.setPadding(new Insets(24));
+        column.setMaxWidth(860);
+
+        ScrollPane scroll = new ScrollPane(column);
+        scroll.setFitToWidth(true);
+        scroll.getStyleClass().add("screen-scroll");
+        return scroll;
+    }
+
+    private Button copyButton() {
+        Button copy = new Button("Copy version details", Icons.icon(Icons.COPY, 14, "nav-icon"));
+        copy.getStyleClass().add("primary-button");
+        copy.setOnAction(e -> {
+            Ui.copyToClipboard(report());
+            Ui.toast(overlay, "Version details copied", false);
+        });
+        return copy;
+    }
+
+    private static Label mono(String text) {
+        Label label = new Label(text);
+        label.getStyleClass().add("mono");
+        label.setWrapText(true);
+        return label;
+    }
+
+    /**
+     * A native image has no JVM to report, and printing a Java version there
+     * would send a bug report down the wrong path — several native-image
+     * failures reproduce only in that build.
+     */
+    private static String runtimeDescription() {
+        if (System.getProperty("org.graalvm.nativeimage.imagecode") != null) {
+            return "native image (no JVM)";
+        }
+        return "Java " + Runtime.version().feature() + " (" + System.getProperty("java.vendor") + ")";
+    }
+
+    private static String platformDescription() {
+        return System.getProperty("os.name") + " " + System.getProperty("os.version")
+                + " (" + System.getProperty("os.arch") + ")";
+    }
+
+    private static String report() {
+        return "Yano Wallet " + BuildInfo.WALLET_VERSION
+                + "\nManaged node: Yano " + BuildInfo.NODE_VERSION
+                + "\nRuntime: " + runtimeDescription()
+                + "\nPlatform: " + platformDescription();
+    }
+
+    @Override
+    public Node root() {
+        return root;
+    }
+
+    @Override
+    public void refresh() {
+        // Build facts are fixed for the life of the process.
+    }
+}

wallet-ui/src/main/java/com/bloxbean/cardano/yano/wallet/ui/screens/SettingsScreen.java

@@ -2,7 +2,6 @@
 
 import com.bloxbean.cardano.yano.wallet.ui.Shell;
 import com.bloxbean.cardano.yano.wallet.ui.contract.WalletUiController;
-import com.bloxbean.cardano.yano.wallet.ui.live.LivePrefs;
 import com.bloxbean.cardano.yano.wallet.ui.util.ThemeManager;
 import com.bloxbean.cardano.yano.wallet.ui.util.Ui;
 import javafx.application.Platform;
@@ -294,15 +293,9 @@ private VBox appearanceCard() {
                         }
                     });
         });
-        CheckBox liveBackground = new CheckBox("Animated live-chain background");
-        liveBackground.setSelected(LivePrefs.ambientEnabled());
-        liveBackground.setOnAction(e -> LivePrefs.setAmbientEnabled(liveBackground.isSelected()));
         return Ui.card("Appearance",
                 Ui.muted("Color theme — applies instantly and is remembered."),
-                themePicker,
-                liveBackground,
-                Ui.muted("A subtle animation of live blocks behind the app. Opt-in; it pauses when the "
-                        + "window isn't focused. Open the Live page for the full view."));
+                themePicker);
     }
 
     private void loadNodeLog() {

wallet-ui/src/main/java/com/bloxbean/cardano/yano/wallet/ui/util/Icons.java

@@ -27,6 +27,9 @@ private Icons() {
             + " 2-2h12M16 13h3";
     public static final String LOCK = "M7 11V7a5 5 0 0 1 10 0v4M5 11h14v10H5V11z";
     // Filled equalizer bars — reads as live activity/stats (must be solid, not stroked).
+    /** "i" in a circle. */
+    public static final String ABOUT = "M12 3a9 9 0 1 0 9 9 9 9 0 0 0-9-9zm0 4h.01M11 11h1v6h1";
+
     public static final String LIVE = "M4 13h3v7H4v-7z M10 8h3v12h-3V8z M16 3h3v17h-3V3z";
 
     public static Region icon(String svgPath, double size, String styleClass) {