add menu item to clear image cache

filecache.cpp

@@ -17,6 +17,11 @@ Cache::~Cache() {
         fprintf(stderr, "error removing tmp dir\n");
 }
 
+void Cache::ClearCache() {
+    for (const auto &path : std::filesystem::directory_iterator(m_tmp_path))
+        std::filesystem::remove_all(path);
+}
+
 std::string Cache::GetCachedName(std::string str) {
     uint32_t out;
     MurmurHash3_x86_32(str.c_str(), str.size(), 0, &out);

filecache.hpp

@@ -17,6 +17,7 @@ public:
     using callback_type = std::function<void(std::string)>;
     void GetFileFromURL(std::string url, callback_type cb);
     std::string GetPathIfCached(std::string url);
+    void ClearCache();
 
 private:
     std::string GetCachedName(std::string str);

imgmanager.cpp

@@ -9,6 +9,10 @@ Cache &ImageManager::GetCache() {
     return m_cache;
 }
 
+void ImageManager::ClearCache() {
+    m_cache.ClearCache();
+}
+
 Glib::RefPtr<Gdk::Pixbuf> ImageManager::ReadFileToPixbuf(std::string path) {
     const auto &data = ReadWholeFile(path);
     if (data.size() == 0) return Glib::RefPtr<Gdk::Pixbuf>(nullptr);

imgmanager.hpp

@@ -14,6 +14,7 @@ public:
     using callback_type = sigc::slot<void(Glib::RefPtr<Gdk::Pixbuf>)>;
 
     Cache &GetCache();
+    void ClearCache();
     void LoadFromURL(std::string url, callback_type cb);
     // animations need dimensions before loading since there is no (easy) way to scale a PixbufAnimation
     void LoadAnimationFromURL(std::string url, int w, int h, callback_anim_type cb);

windows/mainwindow.cpp

@@ -31,8 +31,10 @@ MainWindow::MainWindow()
     m_menu_file.set_submenu(m_menu_file_sub);
     m_menu_file_reload_settings.set_label("Reload Settings");
     m_menu_file_reload_css.set_label("Reload CSS");
+    m_menu_file_clear_cache.set_label("Clear file cache");
     m_menu_file_sub.append(m_menu_file_reload_settings);
     m_menu_file_sub.append(m_menu_file_reload_css);
+    m_menu_file_sub.append(m_menu_file_clear_cache);
 
     m_menu_bar.append(m_menu_file);
     m_menu_bar.append(m_menu_discord);
@@ -66,6 +68,10 @@ MainWindow::MainWindow()
         m_signal_action_reload_settings.emit();
     });
 
+    m_menu_file_clear_cache.signal_activate().connect([this] {
+        Abaddon::Get().GetImageManager().ClearCache();
+    });
+
     m_content_box.set_hexpand(true);
     m_content_box.set_vexpand(true);
     m_content_box.show();

windows/mainwindow.hpp

@@ -85,4 +85,5 @@ protected:
     Gtk::Menu m_menu_file_sub;
     Gtk::MenuItem m_menu_file_reload_settings;
     Gtk::MenuItem m_menu_file_reload_css;
+    Gtk::MenuItem m_menu_file_clear_cache;
 };