[core] Added RendererState::has{Image,Layer,Source}

2 files changed, 28 insertions, 0 deletions

diff --git a/platform/default/mbgl/gl/headless_frontend.cpp b/platform/default/mbgl/gl/headless_frontend.cpp
index 1ec11a195f..30def38f71 100644
--- a/platform/default/mbgl/gl/headless_frontend.cpp
+++ b/platform/default/mbgl/gl/headless_frontend.cpp
@@ -64,6 +64,30 @@ CameraOptions HeadlessFrontend::getCameraOptions() {
     return nullCamera;
 }
 
+bool HeadlessFrontend::hasImage(const std::string& id) {
+    if (updateParameters) {
+        return RendererState::hasImage(*updateParameters, id);
+    }
+
+    return false;
+}
+
+bool HeadlessFrontend::hasLayer(const std::string& id) {
+    if (updateParameters) {
+        return RendererState::hasLayer(*updateParameters, id);
+    }
+
+    return false;
+}
+
+bool HeadlessFrontend::hasSource(const std::string& id) {
+    if (updateParameters) {
+        return RendererState::hasSource(*updateParameters, id);
+    }
+
+    return false;
+}
+
 void HeadlessFrontend::setSize(Size size_) {
     if (size != size_) {
         size = size_;
diff --git a/platform/default/mbgl/gl/headless_frontend.hpp b/platform/default/mbgl/gl/headless_frontend.hpp
index 29ab30c93d..45586033b0 100644
--- a/platform/default/mbgl/gl/headless_frontend.hpp
+++ b/platform/default/mbgl/gl/headless_frontend.hpp
@@ -35,6 +35,10 @@ public:
     RendererBackend* getBackend();
     CameraOptions getCameraOptions();
 
+    bool hasImage(const std::string&);
+    bool hasLayer(const std::string&);
+    bool hasSource(const std::string&);
+
     PremultipliedImage readStillImage();
     PremultipliedImage render(Map&);