Replace clipboardqr with showqr, with tkinter ui.

clipboardqr.py

@@ -1,4 +0,0 @@
-import pyperclip
-import qrcode
-
-qrcode.make(pyperclip.paste()).show()

showqr.py

@@ -0,0 +1,54 @@
+import argparse
+import os
+import PIL.ImageTk
+import qrcode
+import sys
+import tkinter
+import tkinter.filedialog
+
+from voussoirkit import pipeable
+
+def save_image(root, image):
+    filename = tkinter.filedialog.asksaveasfilename(
+        parent=root,
+        initialdir=os.getcwd(),
+        filetypes=[('PNG', '*.png')],
+        defaultextension='png',
+    )
+    if not filename:
+        return
+    image.save(filename)
+
+def showqr_argparse(args):
+    text = pipeable.input(args.text, split_lines=False)
+    image = qrcode.make(text).get_image()
+
+    root = tkinter.Tk()
+    root.title("QR code")
+    root.bind('<Escape>', lambda *args, **kwargs: root.quit())
+    root.bind('<Control-s>', lambda *args, **kwargs: save_image(root, image))
+
+    tk_image = PIL.ImageTk.PhotoImage(image)
+    tkinter.Label(root, image=tk_image).grid(row=0, column=0)
+
+    root.update()
+    width = root.winfo_reqwidth()
+    height = root.winfo_reqheight()
+    x_offset = (root.winfo_screenwidth() - width) / 2
+    y_offset = (root.winfo_screenheight() - height) / 2
+
+    root.geometry('%dx%d+%d+%d' % (width, height, x_offset, y_offset-50))
+    root.mainloop()
+    return 0
+
+def main(argv):
+    parser = argparse.ArgumentParser(description=__doc__)
+
+    parser.add_argument('text')
+    parser.set_defaults(func=showqr_argparse)
+
+    args = parser.parse_args(argv)
+    return args.func(args)
+
+if __name__ == '__main__':
+    raise SystemExit(main(sys.argv[1:]))