1 files changed, 6 insertions, 0 deletions
diff --git a/src/events/Windows.cpp b/src/events/Windows.cpp
index 9851a76b..4887560c 100644
--- a/src/events/Windows.cpp
+++ b/src/events/Windows.cpp
@@ -86,6 +86,12 @@ void Events::listener_mapWindow(void* owner, void* data) {
             PWINDOW->m_bIsFloating = false;
         } else if (r.szRule.find("pseudo") == 0) {
             PWINDOW->m_bIsPseudotiled = true;
+        } else if (r.szRule.find("opacity") == 0) {
+            try {
+                PWINDOW->m_sSpecialRenderData.alpha = std::stof(r.szRule.substr(r.szRule.find_first_of(' ') + 1));
+            } catch(std::exception& e) {
+                Debug::log(ERR, "Opacity rule \"%s\" failed with: %s", r.szRule.c_str(), e.what());
+            }
         }
     }