basic image pop-up on hover

gotify_tray/gui/MainApplication.py

@@ -31,7 +31,7 @@ from .models import (
     MessagesModelItem,
     MessageItemDataRole,
 )
-from .widgets import MainWindow, SettingsDialog, Tray
+from .widgets import ImagePopup, MainWindow, SettingsDialog, Tray
 
 
 settings = Settings("gotify-tray")
@@ -65,6 +65,7 @@ class MainApplication(QtWidgets.QApplication):
             settings.value("Server/client_token", type=str),
         )
 
+        self.cache = Cache()
         self.downloader = Downloader()
 
         self.messages_model = MessagesModel()
@@ -308,6 +309,14 @@ class MainApplication(QtWidgets.QApplication):
             return
 
         self.messages_model.clear()
+    
+    def image_popup_callback(self, link: str, pos: QtCore.QPoint):
+        if (filename := self.cache.lookup(link)) or (filename := self.downloader.get_filename(link)): # TODO: preload links
+            self.image_popup = ImagePopup(filename, pos, link)
+            self.image_popup.show()
+        else:
+            # TODO
+            logger.warning(f"Image {link} is not in the cache")
 
     def refresh_callback(self):
         # Manual refresh -> also reset the image cache
@@ -358,6 +367,7 @@ class MainApplication(QtWidgets.QApplication):
             self.application_selection_changed_callback
         )
         self.main_window.delete_message.connect(self.delete_message_callback)
+        self.main_window.image_popup.connect(self.image_popup_callback)
 
         self.watchdog.closed.connect(lambda: self.listener_closed_callback(None, None))