delete key removes screenshot (#225)

* delete key removes screenshot

* unused var

* missed commit

* test

* test?

* test?

* fine

src/gscreenshot/frontend/gtk/dialogs/confirm_dialog.py

@@ -26,7 +26,9 @@ def __init__(self, message, parent=None):
         label = Gtk.Label(label=message)
         label.set_line_wrap(True)
         label.set_max_width_chars(60)
-        label.set_padding(20, 20)
+        label.set_margin_end(20)
+        label.set_margin_start(20)
+        label.set_margin_top(20)
 
         box = self.get_content_area()
         box.add(label)

src/gscreenshot/frontend/gtk/main.py

@@ -101,6 +101,8 @@ def main(app: typing.Optional[Gscreenshot] = None):
             presenter.on_preview_next_clicked,
         Gdk.keyval_to_lower(Gdk.keyval_from_name('Left')):
             presenter.on_preview_prev_clicked,
+        Gdk.keyval_to_lower(Gdk.keyval_from_name('Delete')):
+            presenter.on_delete,
         # Handled in Glade - just here for reference
         #Gtk.gdk.keyval_to_lower(Gtk.gdk.keyval_from_name('Insert')):
         #    presenter.overwrite_mode_toggled

src/gscreenshot/frontend/gtk/presenter.py

@@ -228,6 +228,20 @@ def on_preview_drag(self, _widget, _drag_context, data, _info, _time):
 
         data.set_uris([f"file://{fname}"])
 
+    def on_delete(self, *_):
+        """
+        remove the current screenshot
+        """
+        screenshots = self._app.get_screenshot_collection()
+        current = screenshots.cursor_current()
+        if current:
+            screenshots.remove(current)
+
+            self._view.update_gallery_controls(screenshots)
+            self._show_preview()
+
+        return True
+
     def on_use_last_region_clicked(self, *_):
         '''
         Take a screenshot with the same region as the
@@ -491,16 +505,16 @@ def quit(self, *_, skip_warning=False):
             return  # not strictly needed most of the time
 
         screenshot_collection = self._app.get_screenshot_collection()
-        if len(screenshot_collection) > 1 and self._app.get_screenshot_collection().has_unsaved():
+
+        if len(screenshot_collection) > 1 and screenshot_collection.has_unsaved():
             confirm_dialogue = ConfirmationDialog(
                 message=i18n("There are unsaved screenshots. Quit without saving?")
             )
 
             self._view.run_dialog(confirm_dialogue)
 
-            if confirm_dialogue.confirmed:
-                self._app.quit()
-            return
+            if not confirm_dialogue.confirmed:
+                return
 
         self._app.quit()