pax/booru-viewer
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Code Issues Releases 18 Activity

install event filter on each ThumbnailWidget for reliable padding detection

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pax 2026-04-10 20:36:54 -05:00
parent 00b8e352ea
commit c440065513
1 changed files with 11 additions and 24 deletions
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33
booru_viewer/gui/grid.py
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@ -305,8 +305,6 @@ class ThumbnailWidget(QWidget):
def mousePressEvent(self, event) -> None:
if event.button() == Qt.MouseButton.LeftButton:
if not self._hit_pixmap(event.position().toPoint()):
return
self._drag_start = event.position().toPoint()
self.clicked.emit(self.index, event)
elif event.button() == Qt.MouseButton.RightButton:
@ -318,8 +316,6 @@ class ThumbnailWidget(QWidget):
def mouseDoubleClickEvent(self, event) -> None:
self._drag_start = None
if event.button() == Qt.MouseButton.LeftButton:
if not self._hit_pixmap(event.position().toPoint()):
return
self.double_clicked.emit(self.index)
@ -470,7 +466,7 @@ class ThumbnailGrid(QScrollArea):
thumb.clicked.connect(self._on_thumb_click)
thumb.double_clicked.connect(self._on_thumb_double_click)
thumb.right_clicked.connect(self._on_thumb_right_click)
thumb.installEventFilter(self)
self._flow.add_widget(thumb)
self._thumbs.append(thumb)
@ -485,7 +481,7 @@ class ThumbnailGrid(QScrollArea):
thumb.clicked.connect(self._on_thumb_click)
thumb.double_clicked.connect(self._on_thumb_double_click)
thumb.right_clicked.connect(self._on_thumb_right_click)
thumb.installEventFilter(self)
self._flow.add_widget(thumb)
self._thumbs.append(thumb)
new_thumbs.append(thumb)
@ -566,16 +562,6 @@ class ThumbnailGrid(QScrollArea):
self.ensureWidgetVisible(self._thumbs[index])
self.context_requested.emit(index, pos)
def _is_empty_space(self, vp_pos: QPoint) -> bool:
"""True if the viewport position is not over a thumbnail's pixmap."""
# Map viewport coords to the flow widget (accounts for scroll offset)
flow_pos = self._flow.mapFrom(self.viewport(), vp_pos)
for thumb in self._thumbs:
if thumb.geometry().contains(flow_pos):
local = QPoint(flow_pos.x() - thumb.x(), flow_pos.y() - thumb.y())
return not thumb._hit_pixmap(local)
return True
def _start_rubber_band(self, pos: QPoint) -> None:
"""Start a rubber band selection and deselect."""
self._rb_origin = pos
@ -586,14 +572,15 @@ class ThumbnailGrid(QScrollArea):
self.clear_selection()
def eventFilter(self, obj, event) -> bool:
if obj is self.viewport():
if event.type() == event.Type.MouseButtonPress and event.button() == Qt.MouseButton.LeftButton:
if self._is_empty_space(event.position().toPoint()):
self._start_rubber_band(event.position().toPoint())
if isinstance(obj, ThumbnailWidget):
if event.type() in (event.Type.MouseButtonPress, event.Type.MouseButtonDblClick):
if event.button() == Qt.MouseButton.LeftButton and not obj._hit_pixmap(event.position().toPoint()):
vp_pos = self.viewport().mapFromGlobal(obj.mapToGlobal(event.position().toPoint()))
self._start_rubber_band(vp_pos)
return True
if event.type() == event.Type.MouseButtonDblClick and event.button() == Qt.MouseButton.LeftButton:
if self._is_empty_space(event.position().toPoint()):
self.clear_selection()
elif obj is self.viewport():
if event.type() == event.Type.MouseButtonPress and event.button() == Qt.MouseButton.LeftButton:
self._start_rubber_band(event.position().toPoint())
return True
return super().eventFilter(obj, event)