gui: lyric-window should not be moved when dragging sizegrip #752 (#817)

feeluown/gui/uimain/lyric.py

@@ -12,6 +12,7 @@
 
 
 IS_MACOS = sys.platform == 'darwin'
+IS_WINDOWS = sys.platform == 'win32'
 
 
 def set_bg_color(palette, color):
@@ -37,6 +38,38 @@ def set_fg_color(palette, color):
 """
 
 
+class SizeGrip(QSizeGrip):
+ """
+ On windows, when the user drags the size grip, the lyric window is
+ resized and the lyric window also moves. This is not the expected.
+ So override the mouse event to fix this issue.
+
+ Check https://github.com/feeluown/FeelUOwn/issues/752 for more details.
+ """
+ def mousePressEvent(self, e):
+ super().mousePressEvent(e)
+ if IS_WINDOWS:
+ e.accept()
+
+ def mouseMoveEvent(self, e):
+ super().mouseMoveEvent(e)
+ if IS_WINDOWS:
+ e.accept()
+
+ def mouseReleaseEvent(self, e):
+ super().mouseReleaseEvent(e)
+ if IS_WINDOWS:
+ e.accept()
+
+ def paintEvent(self, _):
+ """
+ On windows, it draws a icon on the corner. On other platforms, it does not.
+ So let LyricWindow draw the icon for the SizeGrip.
+ """
+ if IS_WINDOWS:
+ return
+
+
 class LyricWindow(QWidget):
  """LyricWindow is a transparent container which contains a real lyric window.
 
@@ -230,7 +263,7 @@ def __init__(self, app, parent=None):
  # When _auto_resize is True,
  # the window size adapts to the lyric sentence width.
  self._auto_resize = True
- self._size_grip = QSizeGrip(self)
+ self._size_grip = SizeGrip(self)
  self.line_label = LineLabel(self)
 
  self._app.live_lyric.line_changed.connect(self.set_line)