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page: methods to go to beginning/end of page

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dece 2021-02-18 19:01:28 +01:00
parent 8fdf23689d
commit ff49f0d17e
2 changed files with 31 additions and 3 deletions
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21
bebop/browser.py
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@ -2,6 +2,7 @@ import curses
import curses.ascii import curses.ascii
import curses.textpad import curses.textpad
import os import os
from math import inf
from bebop.colors import ColorPair, init_colors from bebop.colors import ColorPair, init_colors
from bebop.command_line import (CommandLine, EscapeCommandInterrupt, from bebop.command_line import (CommandLine, EscapeCommandInterrupt,
@ -94,6 +95,12 @@ class Browser:
self.quick_command("open") self.quick_command("open")
elif char == ord("H"): elif char == ord("H"):
self.go_back() self.go_back()
elif char == ord("g"):
char = self.screen.getch()
if char == ord("g"):
self.scroll_page_vertically(-inf)
elif char == ord("G"):
self.scroll_page_vertically(inf)
elif curses.ascii.isdigit(char): elif curses.ascii.isdigit(char):
self.handle_digit_input(char) self.handle_digit_input(char)
elif char == curses.KEY_MOUSE: elif char == curses.KEY_MOUSE:
@ -409,11 +416,19 @@ class Browser:
self.screen.refresh() self.screen.refresh()
self.refresh_windows() self.refresh_windows()
def scroll_page_vertically(self, by_lines: int): def scroll_page_vertically(self, by_lines):
if self.page.scroll_v(by_lines, self.h - 2): window_height = self.h - 2
require_refresh = False
if by_lines == inf:
require_refresh = self.page.go_to_end(window_height)
elif by_lines == -inf:
require_refresh = self.page.go_to_beginning()
else:
require_refresh = self.page.scroll_v(by_lines, window_height)
if require_refresh:
self.refresh_page() self.refresh_page()
def scroll_page_horizontally(self, by_columns: int): def scroll_page_horizontally(self, by_columns):
if self.page.scroll_h(by_columns, self.w): if self.page.scroll_h(by_columns, self.w):
self.refresh_page() self.refresh_page()

13
bebop/page.py
View file

@ -78,3 +78,16 @@ class Page:
self.current_column = min(new_column, max_column) self.current_column = min(new_column, max_column)
return True return True
return False return False
def go_to_beginning(self):
if self.current_line:
self.current_line = 0
return True
return False
def go_to_end(self, window_height):
max_line = self.dim[0] - window_height
if self.current_line != max_line:
self.current_line = max_line
return True
return False