Add ability to scale cursor images

win2xcur/main/win2xcur.py

@@ -7,7 +7,7 @@ from multiprocessing.pool import ThreadPool
 from threading import Lock
 from typing import BinaryIO
 
-from win2xcur import shadow
+from win2xcur import scale, shadow
 from win2xcur.parser import open_blob
 from win2xcur.writer import to_x11
 
@@ -32,6 +32,8 @@ def main() -> None:
                         help='y-offset of shadow (as fraction of height)')
     parser.add_argument('-c', '--shadow-color', default='#000000',
                         help='color of the shadow')
+    parser.add_argument('--scale', default=None, type=float,
+                        help='Scale the cursor by the specified factor.')
 
     args = parser.parse_args()
     print_lock = Lock()
@@ -46,6 +48,8 @@ def main() -> None:
                 print(f'Error occurred while processing {name}:', file=sys.stderr)
                 traceback.print_exc()
         else:
+            if args.scale:
+                scale.apply_to_frames(cursor.frames, scale=args.scale)
             if args.shadow:
                 shadow.apply_to_frames(cursor.frames, color=args.shadow_color, radius=args.shadow_radius,
                                        sigma=args.shadow_sigma, xoffset=args.shadow_x, yoffset=args.shadow_y)

win2xcur/main/x2wincur.py

@@ -7,6 +7,7 @@ from multiprocessing.pool import ThreadPool
 from threading import Lock
 from typing import BinaryIO
 
+from win2xcur import scale
 from win2xcur.parser import open_blob
 from win2xcur.writer import to_smart
 
@@ -17,6 +18,8 @@ def main() -> None:
                         help='X11 cursor files to convert (no extension)')
     parser.add_argument('-o', '--output', '--output-dir', default=os.curdir,
                         help='Directory to store converted cursor files.')
+    parser.add_argument('-S', '--scale', default=None, type=float,
+                        help='Scale the cursor by the specified factor.')
 
     args = parser.parse_args()
     print_lock = Lock()
@@ -31,6 +34,8 @@ def main() -> None:
                 print(f'Error occurred while processing {name}:', file=sys.stderr)
                 traceback.print_exc()
         else:
+            if args.scale:
+                scale.apply_to_frames(cursor.frames, scale=args.scale)
             ext, result = to_smart(cursor.frames)
             output = os.path.join(args.output, os.path.basename(name) + ext)
             with open(output, 'wb') as f:

win2xcur/scale.py

@@ -0,0 +1,12 @@
+from typing import List
+
+from win2xcur.cursor import CursorFrame
+
+
+def apply_to_frames(frames: List[CursorFrame], *, scale: float) -> None:
+    for frame in frames:
+        for cursor in frame:
+            cursor.image.scale(
+                int(round(cursor.image.width * scale)),
+                int(round(cursor.image.height) * scale),
+            )