From 910335c51fffe2c59042fc3ebea93778649195f8 Mon Sep 17 00:00:00 2001
From: Tadej Novak <tadej@tano.si>
Date: Sat, 19 Oct 2019 10:02:50 +0200
Subject: [PATCH] [qt] Make image source url update possible

---
 platform/qt/src/qmapboxgl.cpp | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/platform/qt/src/qmapboxgl.cpp b/platform/qt/src/qmapboxgl.cpp
index 0bfc6abf7..64431e233 100644
--- a/platform/qt/src/qmapboxgl.cpp
+++ b/platform/qt/src/qmapboxgl.cpp
@@ -30,6 +30,7 @@
 #include <mbgl/style/layers/symbol_layer.hpp>
 #include <mbgl/style/rapidjson_conversion.hpp>
 #include <mbgl/style/sources/geojson_source.hpp>
+#include <mbgl/style/sources/image_source.hpp>
 #include <mbgl/style/transition_options.hpp>
 #include <mbgl/style/image.hpp>
 #include <mbgl/renderer/renderer.hpp>
@@ -1295,7 +1296,7 @@ bool QMapboxGL::sourceExists(const QString& sourceID)
     Updates the source \a id with new \a params.
 
     If the source does not exist, it will be added like in addSource(). Only
-    GeoJSON sources can be updated.
+    image and GeoJSON sources can be updated.
 */
 void QMapboxGL::updateSource(const QString &id, const QVariantMap &params)
 {
@@ -1309,12 +1310,17 @@ void QMapboxGL::updateSource(const QString &id, const QVariantMap &params)
     }
 
     auto sourceGeoJSON = source->as<GeoJSONSource>();
-    if (!sourceGeoJSON) {
-        qWarning() << "Unable to update source: only GeoJSON sources are mutable.";
+    auto sourceImage = source->as<ImageSource>();
+    if (!sourceGeoJSON && !sourceImage) {
+        qWarning() << "Unable to update source: only GeoJSON and Image sources are mutable.";
         return;
     }
 
-    if (params.contains("data")) {
+    if (sourceImage) {
+        if (params.contains("url")) {
+            sourceImage->setURL(params["url"].toString().toStdString());
+        }
+    } else if (sourceGeoJSON && params.contains("data")) {
         Error error;
         auto result = convert<mbgl::GeoJSON>(params["data"], error);
         if (result) {