working curses

src/stopwatch.py

@@ -1,15 +1,27 @@
-#!/bin/env python3
+#!/usr/bin/env python3
-try:
+
-    import beepy    # pip install beepy
+# hard dependencies
-except:
-    beepy = None
-from multiprocessing import Process
 import argparse
 import time
 import datetime
 import sys
 import time
+import curses
 
+# optional dependencies
+try:
+    import beepy    # pip install beepy
+except:
+    beepy = None
+try:
+    from multiprocessing import Process
+except:
+    Process = None
+    
+
+# printing to stderr
+def eprint(*args, **kwargs):
+    print(*args, file=sys.stderr, **kwargs)
 
 class stopwatch:
 
@@ -18,58 +30,111 @@ class stopwatch:
     has_beeped: bool = False
     start_time: datetime.datetime
     enable_sound: bool = False
+    screen: curses.window
+    next_line = 0
 
-    def __init__(self, beep_at, enable_sound) -> None:
+    BUFFER_LINE = '=' * 120
-        print('='*120)
+    COL0_Y = 0
+    COL1_Y = 44
+    COL2_Y = 90
+
+    def __init__(self, beep_at, enable_sound, screen: curses.window) -> None:
+        self.screen = screen
+        self.screen.addstr(0, 0, self.BUFFER_LINE)
+        self.next_line += 2
         self.start_time = datetime.datetime.now().replace(microsecond=0)
         if enable_sound:
-            print("Warning:\tonce the beep time is reached, a sound will play.")
+            self.enable_sound = enable_sound
-        self.enable_sound = enable_sound
         if not beep_at <= 0:
             self.beep_at = beep_at
             self.beep_at_time = self.start_time + datetime.timedelta(minutes=beep_at)
-            print("Start time:\t%s\nWill beep at:\t%s\nBeeping Time:\t%sm" % (self.start_time, self.beep_at_time, beep_at))
+            self.screen.addstr(self.next_line, self.COL0_Y, "Start time:\t%s" % self.start_time)
+            self.screen.addstr(self.next_line, self.COL1_Y, "Will beep at:\t%s" % self.beep_at_time)
+            self.screen.addstr(self.next_line, self.COL2_Y, "Beeping Time:\t%sm" % beep_at)
+            self.next_line += 2
+            self.screen.addstr(self.next_line, self.COL0_Y, self.BUFFER_LINE)
+            self.next_line += 5
+            # content goes here
+            self.screen.addstr(self.next_line, self.COL0_Y, self.BUFFER_LINE)
+            self.next_line -= 3
         else:
             self.beep_at = 0
             self.beep_at_time = datetime.datetime.now()
-            print("Start time:\t%s" % self.start_time)
+            self.screen.addstr(self.next_line, self.COL1_Y, "Start time:\t%s" % self.start_time)
-        print('='*120)
+            self.next_line += 6
+            # content goes here
+            self.screen.addstr(self.next_line, self.COL0_Y, self.BUFFER_LINE)
+            self.next_line -= 4
 
 
     def display(self) -> None:
-        text2 = ""
+        remaining_time_str = ""
-        text3 = ""
+        beep_notice_str = ""
         while True:
+            nl_store = self.next_line
             now = datetime.datetime.now().replace(microsecond=0)
             elapsed = (now - self.start_time)
-            text0 = ("\rcurrent:\t%s" % now)
+            current_time_str = ("\rcurrent:\t%s" % now)
-            text1 = ("elapsed: %s" % elapsed)
+            elapsed_time_str = ("elapsed: %s" % elapsed)
             if self.beep_at > 0 and not self.has_beeped:
                 remaining = self.beep_at_time - now
-                text2 = ("remaining: %s" % remaining)
+                remaining_time_str = ("remaining: %s" % remaining)
             if elapsed.seconds / 60 >= self.beep_at and not self.has_beeped and not self.beep_at == 0:
-                text0 += '\a'
+                current_time_str += '\a'
-                text3 = "🔔Beep!🔔"
+                beep_notice_str = "🔔Beep!🔔"
                 self.has_beeped = True
-                if self.enable_sound:
+                if self.enable_sound and not beepy is None and not Process is None:
                     p = Process(target=beepy.beep, kwargs={"sound": "success"})
                     p.start()
-            sys.stdout.write('\r' + text0+"\t\t"+text1+"\t\t"+text2+"\t\t"+text3 + "\t")
+            #sys.stdout.write('\r' + current_time_str+"\t\t"+elapsed_time_str+"\t\t"+remaining_time_str+"\t\t"+beep_notice_str + "\t")
-            sys.stdout.flush()
+            if self.beep_at > 0:
+                self.screen.addstr(self.next_line, self.COL0_Y, "current:\t%s" % (now))
+                self.screen.addstr(self.next_line, self.COL2_Y, "elapsed:\t%s" % (elapsed))
+                self.next_line += 1
+                if not self.has_beeped:
+                    self.screen.addstr(self.next_line, self.COL2_Y, "remaining:\t%s" % (remaining))
+                else:
+                    self.screen.addstr(self.next_line, self.COL2_Y, "overtime:\t%s" % (remaining))
+            else:
+                self.screen.addstr(self.next_line, self.COL1_Y, "current:\t%s" % (now))
+                self.next_line += 2
+                self.screen.addstr(self.next_line, self.COL1_Y, "elapsed:\t\t    %s" % (elapsed))
+            #sys.stdout.flush()
+            self.screen.refresh()
+            self.next_line = nl_store
             time.sleep(0.1)
 
 def main():
     parser = argparse.ArgumentParser(prog="stopwatch", description='Simple CLI stopwatch.')
+    # TODO make this weird nargs thing better, generates a bad help page
     parser.add_argument('-b', '--beep', metavar='N', type=float, nargs='+',
-                    help='beep after x minutes', default=[0])
+                    help='beep after N minutes', default=[0])
     parser.add_argument('-s', '--sound',
-                    action='store_true')
+                    action='store_true', help="activate sound")
+    parser.add_argument('-l', '--legacy-ui',
+                    action='store_true', help="Use the old \"inline\" ui instead of the curses ui")
+    parser.add_argument('-a', '--no-animation',
+                    action='store_true', help="don't show the animation")
     args = parser.parse_args()
     try:
-        timer = stopwatch(args.beep[0], enable_sound=args.sound)
+        stdscreen = curses.initscr()
+        # copied from my guide, idk what they do:
+        curses.noecho()
+        curses.cbreak()
+
+        timer = stopwatch(
+                beep_at=args.beep[0], 
+                enable_sound=args.sound, 
+                screen=stdscreen
+                )
         timer.display()
     except KeyboardInterrupt:
         pass
 
+    finally:
+        curses.echo()
+        curses.nocbreak()
+        curses.endwin()
+
 if __name__ == "__main__":
     main()