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Have zoom be on plain scroll

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PhatPhuckDave
2025-12-23 10:35:14 +01:00
parent a77edb5fa0
commit 88630bbcbc
1 changed files with 12 additions and 10 deletions
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22
croppa/main.py
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@@ -3495,24 +3495,26 @@ class VideoEditor:
# Force immediate display update to recalculate previous/next points and arrows
self.display_current_frame()
# Handle scroll wheel: Ctrl+scroll -> zoom; Shift+scroll -> expand/contract crop; plain scroll -> seek ±1 frame
# Handle scroll wheel: plain scroll -> zoom; Shift+scroll -> expand/contract crop; Ctrl+scroll -> scrub timeline
if event == cv2.EVENT_MOUSEWHEEL:
if flags & cv2.EVENT_FLAG_CTRLKEY:
if flags > 0: # Scroll up -> zoom in
self.zoom_factor = min(self.MAX_ZOOM, self.zoom_factor + self.ZOOM_INCREMENT)
else: # Scroll down -> zoom out
self.zoom_factor = max(self.MIN_ZOOM, self.zoom_factor - self.ZOOM_INCREMENT)
self.clear_transformation_cache()
elif flags & cv2.EVENT_FLAG_SHIFTKEY:
if flags & cv2.EVENT_FLAG_SHIFTKEY:
# Shift+scroll -> expand/contract crop uniformly
if flags > 0: # Scroll up -> expand
self.adjust_crop_size_uniform(expand=True)
else: # Scroll down -> contract
self.adjust_crop_size_uniform(expand=False)
else:
elif flags & cv2.EVENT_FLAG_CTRLKEY:
# Ctrl+scroll -> scrub timeline using modifier-based seeking
if not self.is_image_mode:
direction = 1 if flags > 0 else -1
self.seek_video_exact_frame(direction)
self.seek_video_with_modifier(direction, shift_pressed=False, ctrl_pressed=True)
else:
# Plain scroll -> zoom
if flags > 0: # Scroll up -> zoom in
self.zoom_factor = min(self.MAX_ZOOM, self.zoom_factor + self.ZOOM_INCREMENT)
else: # Scroll down -> zoom out
self.zoom_factor = max(self.MIN_ZOOM, self.zoom_factor - self.ZOOM_INCREMENT)
self.clear_transformation_cache()
def _set_crop_from_rotated_rect(self, rotated_rect):
"""Set crop_rect from a rectangle in rotated frame coordinates"""