Reduce number of screen refreshes

[lightcards.git] / lightcards / display.py

diff --git a/lightcards/display.py b/lightcards/display.py
index de3ffe0a6aaa2769cd5a35335f4897efa7aefd9d..6f572ad470ad2b90d8dd36b2b6084db749fd5b1a 100644 (file)
--- a/lightcards/display.py
+++ b/lightcards/display.py
@@ -6,6 +6,7 @@ import curses.panel
 from random import shuffle
 import sys
 import textwrap
+import time
 
 from . import runner, progress
 
@@ -25,7 +26,6 @@ class Help:
         (self.win, self.panel) = panel_create(mlines, mcols)
         self.panel.top()
         self.panel.hide()
-        self.win.clear()
 
         text = [
             "Welcome to runner. Here are some keybindings",
@@ -177,9 +177,6 @@ class Menu:
                     self.menu_print("Stars only!")
                 else:
                     self.menu_print("ERR: None are starred!", err=True)
-            elif key in ["h", "KEY_LEFT"]:
-                self.outer.obj.index = len(self.outer.stack) - 1
-                self.outer.get_key()
             elif key == "r":
                 self.outer.obj.index = 0
                 self.outer.get_key()
@@ -206,23 +203,40 @@ class Display:
     def run(self, stdscr):
         """Set important options that require stdscr before starting"""
         self.win = stdscr
-        (mlines, mcols) = self.win.getmaxyx()
         curses.curs_set(0)  # Hide cursor
         curses.use_default_colors()  # Allow transparency
         curses.init_pair(1, curses.COLOR_CYAN, -1)
         curses.init_pair(2, curses.COLOR_RED, -1)
         curses.init_pair(3, curses.COLOR_YELLOW, -1)
 
-        (self.main_win, self.main_panel) = panel_create(mlines, mcols)
+        self.main_panel = curses.panel.new_panel(self.win)
         self.menu_obj = Menu(self)
         self.help_obj = Help(self)
 
         self.get_key()
 
+    def check_size(self):
+        (mlines, mcols) = self.win.getmaxyx()
+
+        while mlines < 24 or mcols < 60:
+            self.win.clear()
+            self.win.addstr(
+                0,
+                0,
+                textwrap.fill(
+                    "Terminal too small! Min size 60x24", width=mcols
+                ),
+            )
+            self.win.refresh()
+            (mlines, mcols) = self.win.getmaxyx()
+            time.sleep(0.1)
+        else:
+            self.disp_card()
+
     def update_panels(self):
         """Update panel and window contents"""
         curses.panel.update_panels()
-        self.win.refresh()
+        curses.doupdate()
 
     def leave(self):
         """Pickle stack before quitting"""
@@ -276,7 +290,7 @@ class Display:
         self.win.addstr(
             mlines - 1,
             len(bar_start + bar_middle),
-            bar_end,
+            textwrap.shorten(bar_end, width=mcols - 20, placeholder="…"),
             curses.color_pair(1),
         )
 
@@ -294,9 +308,10 @@ class Display:
         Shows a header, a horizontal line, and the contents of the current
         side.
         """
-        (mlines, mcols) = self.win.getmaxyx()
+        (_, mcols) = self.win.getmaxyx()
         self.main_panel.bottom()
-        self.main_win.clear()
+        self.win.clear()
+
         # If on the back of the card, show the content of the front side in
         # the header
         num_done = str(self.obj.index + 1).zfill(len(str(len(self.stack))))
@@ -311,11 +326,12 @@ class Display:
                 + str(self.current_card().front)
                 + '"'
             )
+
         header_width = mcols
         if mcols > 80:
             header_width = 80
 
-        self.main_win.addstr(
+        self.win.addstr(
             0,
             0,
             textwrap.shorten(top, width=header_width, placeholder="…"),
@@ -323,10 +339,10 @@ class Display:
         )
 
         # Add horizontal line
-        self.main_win.hline(1, 0, curses.ACS_HLINE, mcols)
+        self.win.hline(1, 0, curses.ACS_HLINE, mcols)
 
         # Show current side
-        self.main_win.addstr(
+        self.win.addstr(
             2,
             0,
             textwrap.fill(
@@ -347,8 +363,8 @@ class Display:
         Display a card and wait for the input.
         Used as a general way of getting back into the card flow from a menu
         """
-        self.disp_card()
         while True:
+            self.check_size()
             key = self.win.getkey()
             if key == "q":
                 self.leave()