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Fixed Map: leaflet rendering in Java 21 Webview (disabling 3D in leaflet)

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This commit is contained in:
Marc Froehlich
2026-06-30 01:56:13 +02:00
parent 2da9ba8152
commit a841914fcd
3 changed files with 166 additions and 51 deletions
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src/main/java/kst4contest/view/map/MapHtmlResources.java
+63 -19
View File
@@ -214,6 +214,11 @@ public final class MapHtmlResources {
<body class="kst-theme-light">
<div id="map"></div>
<script>
// JavaFX 21 WebView can render Leaflet's CSS translate3d tile positioning incorrectly.
// Disable Leaflet 3D transforms before leaflet.js is loaded to keep tile rendering stable.
window.L_DISABLE_3D = true;
</script>
<script>
""" + leafletJs + """
</script>
@@ -366,18 +371,31 @@ public final class MapHtmlResources {
applyThemeClass();
map = L.map('map', {
zoomControl: true
zoomControl: true,
zoomAnimation: false,
fadeAnimation: false,
markerZoomAnimation: false,
inertia: false
}).setView([51.0, 10.0], 6);
jsLog('Leaflet map initialized');
L.tileLayer(
const tileLayer = L.tileLayer(
'http://127.0.0.1:' + window._kstTileProxyPort + '/tiles/{s}/{z}/{x}/{y}.png',
{
maxZoom: 18,
updateWhenZooming: false,
keepBuffer: 4,
attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a>'
}
).addTo(map);
);
tileLayer.on('tileerror', function (event) {
const source = event && event.tile ? event.tile.src : 'unknown';
jsError('OSM tile load failed: ' + source);
});
tileLayer.addTo(map);
map.createPane('beamPane');
map.getPane('beamPane').style.zIndex = 410;
@@ -416,22 +434,47 @@ public final class MapHtmlResources {
}
function invalidateSize() {
if (!map) {
return;
}
jsLog('invalidateSize');
map.invalidateSize(false);
if (invalidateNotifyTimer) {
window.clearTimeout(invalidateNotifyTimer);
}
invalidateNotifyTimer = window.setTimeout(function () {
notifyViewport();
}, 120);
}
if (!map) {
return;
}
const mapElement = document.getElementById('map');
const domWidth = mapElement ? mapElement.clientWidth : -1;
const domHeight = mapElement ? mapElement.clientHeight : -1;
jsLog('invalidateSize dom=' + domWidth + 'x' + domHeight
+ ' leafletBefore=' + map.getSize().x + 'x' + map.getSize().y);
window.requestAnimationFrame(function () {
map.invalidateSize({
animate: false,
pan: false,
debounceMoveend: true
});
window.setTimeout(function () {
map.invalidateSize({
animate: false,
pan: false,
debounceMoveend: true
});
jsLog('invalidateSize leafletAfter=' + map.getSize().x + 'x' + map.getSize().y);
if (invalidateNotifyTimer) {
window.clearTimeout(invalidateNotifyTimer);
}
invalidateNotifyTimer = window.setTimeout(function () {
notifyViewport();
}, 120);
}, 80);
});
}
function resize() {
invalidateSize();
}
function zoomIn() {
if (!map) {
@@ -693,6 +736,7 @@ public final class MapHtmlResources {
return {
init: init,
invalidateSize: invalidateSize,
resize: resize,
zoomIn: zoomIn,
zoomOut: zoomOut,
inspectPoint: inspectPoint,
src/main/java/kst4contest/view/map/StationMapView.java
+97 -29
View File
@@ -49,6 +49,17 @@ public final class StationMapView {
private final Stage stage = new Stage();
private final WebView webView = new WebView();
private final WebEngine webEngine = webView.getEngine();
/**
* Keep a strong Java reference to the bridge object.
*
* JavaFX WebView/JSObject does not guarantee that a Java object passed through
* window.setMember(...) remains strongly reachable from the Java side. Newer
* JavaFX/WebKit/GC combinations can otherwise lose callbacks after a while.
*/
private final JavaMapBridge javaMapBridge = new JavaMapBridge();
private TileProxyServer tileProxyServer;
private Scene scene;
@@ -85,6 +96,22 @@ public final class StationMapView {
private List<MapCallsignRawSnapshot> lastSnapshots = List.of();
private MapCallsignRawSnapshot lastSelectedSnapshot;
private boolean filteredViewActive;
/**
* Last JSON payloads sent into Leaflet. Used to avoid clearing/recreating
* layers every score/table refresh. Rebuilding DOM markers every few seconds
* is visible as flicker in JavaFX 21 WebView.
*/
private String lastRenderedStationsJson = "";
private String lastRenderedBeamJson = "";
private String lastRenderedConnectionJson = "";
private String lastRenderedGridJson = "";
/**
* Prevent periodic refreshes from panning the map back to the selected station.
* Explicit calls to focusCallsignRaw(...) still pan immediately.
*/
private String lastAutoFocusedCallsignRaw = "";
private double homeLatitudeDeg = Double.NaN;
private double homeLongitudeDeg = Double.NaN;
@@ -192,8 +219,11 @@ public final class StationMapView {
return;
}
String normalizedCallsignRaw = callSignRaw.trim().toUpperCase(Locale.ROOT);
lastAutoFocusedCallsignRaw = normalizedCallsignRaw;
executeMapScriptSafely(
"window.kstMapApi.focusCallsignRaw(" + toJsStringLiteral(callSignRaw.trim().toUpperCase(Locale.ROOT)) + ");"
"window.kstMapApi.focusCallsignRaw(" + toJsStringLiteral(normalizedCallsignRaw) + ");"
);
}
@@ -292,6 +322,8 @@ public final class StationMapView {
webView.setMinWidth(0);
webView.setMinHeight(220);
webView.setPrefHeight(420);
webView.setMaxWidth(Double.MAX_VALUE);
webView.setMaxHeight(Double.MAX_VALUE);
VBox.setVgrow(webView, Priority.ALWAYS);
profileSection.setMinWidth(0);
@@ -623,7 +655,7 @@ public final class StationMapView {
webEngine.getLoadWorker().stateProperty().addListener((obs, oldState, newState) -> {
if (newState == javafx.concurrent.Worker.State.SUCCEEDED) {
JSObject window = (JSObject) webEngine.executeScript("window");
window.setMember("javaMapBridge", new JavaMapBridge());
window.setMember("javaMapBridge", javaMapBridge);
executeMapScriptSafely("window.kstMapApi.init();");
@@ -643,11 +675,13 @@ public final class StationMapView {
return;
}
Platform.runLater(() ->
Platform.runLater(() ->
executeMapScriptSafely("window.kstMapApi.invalidateSize();")));
Platform.runLater(() -> Platform.runLater(() ->
executeMapScriptSafely("window.kstMapApi.resize();")
));
}
private void handleWebViewClick(MouseEvent event) {
logWebViewMouseEvent("MOUSE_CLICKED", event);
@@ -910,9 +944,6 @@ public final class StationMapView {
detailPathProfileChart.setObstructionSummary(result.obstructionSummary());
}
private void renderAll() {
if (!mapReady) {
return;
@@ -930,49 +961,78 @@ public final class StationMapView {
renderBeam();
renderConnectionLine();
renderGridIfViewportKnown();
focusSelectedStationOnlyWhenSelectionChanged();
}
if (lastSelectedSnapshot != null) {
focusCallsignRaw(lastSelectedSnapshot.callSignRaw());
private void focusSelectedStationOnlyWhenSelectionChanged() {
if (lastSelectedSnapshot == null || lastSelectedSnapshot.callSignRaw() == null) {
lastAutoFocusedCallsignRaw = "";
return;
}
String selectedCallsignRaw = lastSelectedSnapshot.callSignRaw().trim().toUpperCase(Locale.ROOT);
if (selectedCallsignRaw.isBlank() || selectedCallsignRaw.equals(lastAutoFocusedCallsignRaw)) {
return;
}
focusCallsignRaw(selectedCallsignRaw);
}
private void renderStations() {
String stationsJson = toStationsJson(lastSnapshots);
if (stationsJson.equals(lastRenderedStationsJson)) {
return;
}
lastRenderedStationsJson = stationsJson;
executeMapScriptSafely(
"window.kstMapApi.setStations(" + toJsStringLiteral(toStationsJson(lastSnapshots)) + ");"
"window.kstMapApi.setStations(" + toJsStringLiteral(stationsJson) + ");"
);
}
private void renderBeam() {
if (!Double.isFinite(homeLatitudeDeg)
|| !Double.isFinite(homeLongitudeDeg)
|| beamWidthDeg <= 0.0
|| maxQrbKm <= 0.0) {
String beamJson = "null";
executeMapScriptSafely("window.kstMapApi.setBeam('null');");
return;
if (Double.isFinite(homeLatitudeDeg)
&& Double.isFinite(homeLongitudeDeg)
&& beamWidthDeg > 0.0
&& maxQrbKm > 0.0) {
List<double[]> sectorPoints = buildBeamPolygon(homeLatitudeDeg, homeLongitudeDeg, antennaAzimuthDeg, beamWidthDeg, maxQrbKm);
beamJson = toPointArrayJson(sectorPoints);
}
List<double[]> sectorPoints = buildBeamPolygon(homeLatitudeDeg, homeLongitudeDeg, antennaAzimuthDeg, beamWidthDeg, maxQrbKm);
if (beamJson.equals(lastRenderedBeamJson)) {
return;
}
lastRenderedBeamJson = beamJson;
executeMapScriptSafely(
"window.kstMapApi.setBeam(" + toJsStringLiteral(toPointArrayJson(sectorPoints)) + ");"
"window.kstMapApi.setBeam(" + toJsStringLiteral(beamJson) + ");"
);
}
private void renderConnectionLine() {
if (lastSelectedSnapshot == null || !lastSelectedSnapshot.hasUsablePosition()
|| !Double.isFinite(homeLatitudeDeg) || !Double.isFinite(homeLongitudeDeg)) {
String connectionJson = "null";
executeMapScriptSafely("window.kstMapApi.setConnection('null');");
return;
if (lastSelectedSnapshot != null && lastSelectedSnapshot.hasUsablePosition()
&& Double.isFinite(homeLatitudeDeg) && Double.isFinite(homeLongitudeDeg)) {
List<double[]> points = List.of(
new double[]{homeLatitudeDeg, homeLongitudeDeg},
new double[]{lastSelectedSnapshot.latitudeDeg(), lastSelectedSnapshot.longitudeDeg()}
);
connectionJson = toPointArrayJson(points);
}
List<double[]> points = List.of(
new double[]{homeLatitudeDeg, homeLongitudeDeg},
new double[]{lastSelectedSnapshot.latitudeDeg(), lastSelectedSnapshot.longitudeDeg()}
);
if (connectionJson.equals(lastRenderedConnectionJson)) {
return;
}
lastRenderedConnectionJson = connectionJson;
executeMapScriptSafely(
"window.kstMapApi.setConnection(" + toJsStringLiteral(toPointArrayJson(points)) + ");"
"window.kstMapApi.setConnection(" + toJsStringLiteral(connectionJson) + ");"
);
}
@@ -1011,11 +1071,19 @@ public final class StationMapView {
+ " cellPx=" + String.format(Locale.US, "%.1f/%.1f", renderPlan.estimatedCellWidthPx(), renderPlan.estimatedCellHeightPx())
+ " cells=" + visibleGridCells.size());
String gridJson = toGridJson(visibleGridCells, renderPlan);
if (gridJson.equals(lastRenderedGridJson)) {
return;
}
lastRenderedGridJson = gridJson;
executeMapScriptSafely(
"window.kstMapApi.setGrid(" + toJsStringLiteral(toGridJson(visibleGridCells, renderPlan)) + ");"
"window.kstMapApi.setGrid(" + toJsStringLiteral(gridJson) + ");"
);
}
private List<double[]> buildBeamPolygon(double startLatDeg,
double startLonDeg,
double centerAzimuthDeg,
src/main/java/kst4contest/view/map/TileProxyServer.java
+6 -3
View File
@@ -19,8 +19,10 @@ import java.util.concurrent.Executors;
*/
final class TileProxyServer {
private static final int CACHE_MAX = 512;
private static final int CACHE_MAX = 2048;
private static final String USER_AGENT = "kst4contest/1.0 amateur-radio-contest-tool";
private static final int TILE_PROXY_THREADS = 12;
private static final int TILE_PROXY_BACKLOG = 128;
private final ServerSocket serverSocket;
private final ExecutorService executor;
@@ -39,9 +41,9 @@ final class TileProxyServer {
}
});
this.serverSocket = new ServerSocket(0, 16, InetAddress.getByName("127.0.0.1"));
this.serverSocket = new ServerSocket(0, TILE_PROXY_BACKLOG, InetAddress.getByName("127.0.0.1"));
this.executor = Executors.newFixedThreadPool(4, r -> {
this.executor = Executors.newFixedThreadPool(TILE_PROXY_THREADS, r -> {
Thread t = new Thread(r, "tile-proxy");
t.setDaemon(true);
return t;
@@ -132,6 +134,7 @@ final class TileProxyServer {
+ "Content-Type: image/png\r\n"
+ "Content-Length: " + tileData.length + "\r\n"
+ "Cache-Control: max-age=86400\r\n"
+ "Access-Control-Allow-Origin: *\r\n"
+ "Connection: close\r\n"
+ "\r\n";
out.write(header.getBytes());