Support multiscale images; specify output size

README.md

@@ -28,13 +28,13 @@ For example, if you want to convert [the sample cursor](sample/crosshair.cur)
 to Linux format:
 
     mkdir output/
-    win2xcur sample/crosshair.cur -o output/
+    win2xcur sample/crosshair.cur -o output/ --size 32 48 64
 
 `-s` can be specified to enable shadows.
 Multiple cursors files can be specified on the command line.
 For example, to convert a directory of cursors with shadows enabled:
 
-    win2xcur input/*.{ani,cur} -o output/ 
+    win2xcur input/*.{ani,cur} -o output/ --size 32 48 64
 
 For more information, run `win2xcur --help`.
 
@@ -43,7 +43,7 @@ For more information, run `win2xcur --help`.
 For example, if you want to convert DMZ-White to Windows:
 
     mkdir dmz-white/
-    x2wincur /usr/share/icons/DMZ-White/cursors/* -o dmz-white/
+    x2wincur /usr/share/icons/DMZ-White/cursors/* -o dmz-white/ --size 32 48 64
 
 ## Troubleshooting
 

win2xcur/cursor.py

@@ -16,6 +16,8 @@ def __init__(self, image: SingleImage, hotspot: Tuple[int, int], nominal: int) -
     def __repr__(self) -> str:
         return f'CursorImage(image={self.image!r}, hotspot={self.hotspot!r}, nominal={self.nominal!r})'
 
+    def clone(self):
+        return CursorImage(self.image.clone(), self.hotspot, self.nominal)
 
 class CursorFrame:
     images: List[CursorImage]
@@ -36,3 +38,6 @@ def __iter__(self) -> Iterator[CursorImage]:
 
     def __repr__(self) -> str:
         return f'CursorFrame(images={self.images!r}, delay={self.delay!r})'
+
+    def clone(self):
+        return CursorFrame([img.clone() for img in self.images], self.delay)

win2xcur/main/win2xcur.py

@@ -32,8 +32,10 @@ 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.')
+    parser.add_argument('--scale', nargs='*', type=float, default=None,
+                        help='Scale the cursor by the specified factor. Multi-scale "[0.125,0.1875,0.25]"')
+    parser.add_argument('--size', nargs='*', type=int, default=None,
+                        help='Scale the cursor to the specified size. Multi-size "[32,48,64]"')
 
     args = parser.parse_args()
     print_lock = Lock()
@@ -49,7 +51,12 @@ def process(file: BinaryIO) -> None:
                 traceback.print_exc()
         else:
             if args.scale:
-                scale.apply_to_frames(cursor.frames, scale=args.scale)
+                cursor.frames = scale.apply_to_frames_by_scales(cursor.frames, scales=args.scale)
+            elif args.size:
+                cursor.frames = scale.apply_to_frames_to_sizes(cursor.frames, sizes=args.size)
+            else:
+                raise NotImplementedError('Please specify either --scale or --size')
+
             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

@@ -18,8 +18,10 @@ 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.')
+    parser.add_argument('-S', '--scale', nargs='*', type=float, default=None,
+                        help='Scale the cursor by the specified factor. Multi-scale "[0.125,0.1875,0.25]"')
+    parser.add_argument('--size', nargs='*', type=int, default=None,
+                        help='Scale the cursor to the specified size. Multi-size "[32,28,64]"')
 
     args = parser.parse_args()
     print_lock = Lock()
@@ -35,7 +37,12 @@ def process(file: BinaryIO) -> None:
                 traceback.print_exc()
         else:
             if args.scale:
-                scale.apply_to_frames(cursor.frames, scale=args.scale)
+                cursor.frames = scale.apply_to_frames_by_scales(cursor.frames, scales=args.scale)
+            elif args.size:
+                cursor.frames = scale.apply_to_frames_to_sizes(cursor.frames, sizes=args.size)
+            else:
+                raise NotImplementedError('Please specify either --scale or --size')
+
             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

@@ -2,11 +2,35 @@
 
 from win2xcur.cursor import CursorFrame
 
+def apply_to_frames_by_scales(frames: List[CursorFrame], *, scales: List[float] = None) -> List[CursorFrame]:
+    all_frames = []
+    for scale in scales:
+        for frame in frames:
+            frame = frame.clone()
+            for cursor in frame:
+                cursor.image.scale(
+                    int(round(cursor.image.width * scale)),
+                    int(round(cursor.image.height * scale)),
+                )
+                cursor.nominal = int(cursor.nominal * scale)
+                hx, hy = cursor.hotspot
+                cursor.hotspot = (int(hx * scale), int(hy * scale))
+            all_frames.append(frame)
+    return all_frames
 
-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),
-            )
+def apply_to_frames_to_sizes(frames: List[CursorFrame], *, sizes: List[int] = None) -> List[CursorFrame]:
+    all_frames = []
+    for size in sizes:
+        for frame in frames:
+            frame = frame.clone()
+            for cursor in frame:
+                scale = size / cursor.image.width
+                cursor.image.scale(
+                    size,
+                    size,
+                )
+                cursor.nominal = int(cursor.nominal * scale)
+                hx, hy = cursor.hotspot
+                cursor.hotspot = (int(hx * scale), int(hy * scale))
+            all_frames.append(frame)
+    return all_frames