x,y scale and docs

2 files changed, 14 insertions, 2 deletions

diff --git a/README.md b/README.md
index beff533..7784df5 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,11 @@ sspreview spritesheet.png
 
 <img src="https://git.usebox.net/sspreview/plain/example.png" alt="Example" style="width:auto;">
 
+Tips:
+
+* in "scale", provide two numbers separated with a comma in case you want a different scale factor for x and y (e.g. `20,10`)
+* if your spritesheet changes, press `Update` and it will reload the image
+
 Caveats:
 
 * my first tinker app
diff --git a/sspreview b/sspreview
index 7f81684..b407b3d 100755
--- a/sspreview
+++ b/sspreview
@@ -132,7 +132,14 @@ class Preview(object):
                 self.error("Invalid height")
 
             try:
-                scale = int(self.scale.get())
+                scale = self.scale.get()
+                if "," in scale:
+                    scale = scale.split(",")
+                    if len(scale) != 2:
+                        self.error("Invalid x,y scale factor")
+                else:
+                    scale = (scale, scale)
+                scale = [int(x) for x in scale]
             except Exception:
                 self.error("Invalid scale")
 
@@ -158,7 +165,7 @@ class Preview(object):
                 for x in range(0, w, width):
                     frames.append(
                         image.crop((x, y, x + width, y + height)).resize(
-                            (width * scale, height * scale), None
+                            (width * scale[0], height * scale[1]), None
                         )
                     )