Fix missing icon on snap (#2616)

* defined FLAMESHOT_ICON variable

* print statements

* remove print statements

* adding FLAMESHOT_ICON to snap yaml file

* code format; comment

snapcraft.yaml

@@ -46,9 +46,10 @@ parts:
       - kde-frameworks-5-qt-5-15-core20
     source: https://github.com/flameshot-org/flameshot.git
     plugin: cmake
-      # This cannot be enabled until the KF5 toolkit in the snap is updated
-      #cmake-parameters:
-      #  - -DUSE_WAYLAND_CLIPBOARD=1
+    cmake-parameters:
+       - -DFLAMESHOT_ICON=/snap/flameshot/current/usr/local/share/icons/hicolor/scalable/apps/flameshot.svg
+       # This cannot be enabled until the KF5 toolkit in the snap is updated
+       #- -DUSE_WAYLAND_CLIPBOARD=1
     source-type: git
     override-pull: |
       snapcraftctl pull

src/CMakeLists.txt

@@ -65,6 +65,10 @@ endif ()
 
 add_executable(Flameshot::flameshot ALIAS flameshot)
 
+if(FLAMESHOT_ICON)
+  target_compile_definitions(flameshot PUBLIC FLAMESHOT_ICON="${FLAMESHOT_ICON}")
+endif()
+
 if (WIN32)
     set_property(TARGET flameshot PROPERTY WIN32_EXECUTABLE true)
     if (MSVC)

src/utils/systemnotification.cpp

@@ -12,6 +12,13 @@
 #include "src/core/flameshotdaemon.h"
 #endif
 
+// work-around for snap, which cannot install icons into
+// the system folder, so instead the absolute path to the
+// icon (saved somwhere in /snap/flameshot/...) is passed
+#ifndef FLAMESHOT_ICON
+#define FLAMESHOT_ICON "flameshot"
+#endif
+
 SystemNotification::SystemNotification(QObject* parent)
   : QObject(parent)
   , m_interface(nullptr)
@@ -61,9 +68,10 @@ void SystemNotification::sendMessage(const QString& text,
         hintsMap[QStringLiteral("x-kde-urls")] =
           QStringList({ fullPath.toString() });
     }
+
     args << (qAppName())                 // appname
          << static_cast<unsigned int>(0) // id
-         << "flameshot"                  // icon
+         << FLAMESHOT_ICON               // icon
          << title                        // summary
          << text                         // body
          << QStringList()                // actions