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from ranger.gui.widget import Widget as SuperClass
class WDisplay(SuperClass):
def __init__(self, win, colorscheme, level):
SuperClass.__init__(self, win, colorscheme)
self.level = level
self.main_display = False
self.display_infostring = False
self.scroll_begin = 0
def feed_env(self, env):
self.target = env.at_level(self.level)
self.show_hidden = env.opt['show_hidden']
self.scroll_offset = env.opt['scroll_offset']
self.directories_first = env.opt['directories_first']
self.preview_files = env.opt['preview_files']
def click(self, event, fm):
from ranger.fsobject import T_DIRECTORY
if self.target is None:
pass
elif self.target.type is T_DIRECTORY:
index = self.scroll_begin + event.y - self.y
if event.pressed(1):
if not self.main_display:
fm.enter_dir(self.target.path)
if index < len(self.target):
fm.move_pointer(absolute = index)
elif event.pressed(3):
try:
clicked_file = self.target[index]
fm.enter_dir(clicked_file.path)
except:
pass
else:
if self.level > 0:
fm.move_right()
def draw(self):
from ranger.file import File
from ranger.directory import Directory
if self.target is None:
pass
elif type(self.target) == File:
self.draw_file()
elif type(self.target) == Directory:
self.draw_directory()
else:
self.win.addnstr(self.y, self.x, "unknown type.", self.wid)
def draw_file(self):
if not self.target.accessible:
self.win.addnstr(self.y, self.x, "not accessible", self.wid)
return
if self.preview_files:
try:
if self.target.size < 1024 * 20:
f = open(self.target.path, 'r')
for line in range(self.hei):
read = f.readline().expandtabs()
self.win.addnstr(self.y + line, self.x, read, self.wid)
except:
pass
def draw_directory(self):
from ranger.directory import Directory
import curses
import stat
self.target.show_hidden = self.show_hidden
self.target.load_content_if_outdated()
self.target.directories_first = self.directories_first
self.target.sort_if_outdated()
base_color = ['in_display']
if self.main_display:
base_color.append('maindisplay')
if self.target.empty():
self.color(base_color, 'empty')
self.win.addnstr(self.y, self.x, "empty", self.wid)
self.color_reset()
return
if not self.target.accessible:
self.color(base_color, 'error')
self.win.addnstr(self.y, self.x, "not accessible", self.wid)
self.color_reset()
return
self.set_scroll_begin()
selected_i = self.target.pointed_index
for line in range(self.hei):
i = line + self.scroll_begin
try:
drawed = self.target[i]
except IndexError:
break
this_color = base_color[:]
if i == selected_i:
this_color.append('selected')
if isinstance(drawed, Directory):
this_color.append('directory')
else:
this_color.append('file')
if drawed.stat is not None and drawed.stat.st_mode & stat.S_IXUSR:
this_color.append('executable')
if drawed.islink:
this_color.append('link')
string = drawed.basename
if self.main_display:
self.win.addnstr(self.y + line, self.x+1, drawed.basename, self.wid-2)
else:
self.win.addnstr(self.y + line, self.x, drawed.basename, self.wid)
if self.display_infostring and drawed.infostring:
info = drawed.infostring
x = self.x + self.wid - 1 - len(info)
if x > self.x:
self.win.addstr(self.y + line, x, str(info) + ' ')
self.color_at(self.y + line, self.x, self.wid, this_color)
self.color_reset()
def get_scroll_begin(self):
offset = self.scroll_offset
dirsize = len(self.target)
winsize = self.hei
halfwinsize = winsize // 2
index = self.target.pointed_index or 0
original = self.target.scroll_begin
projected = index - original
upper_limit = winsize - 1 - offset
lower_limit = offset
if dirsize < winsize:
return 0
if halfwinsize < offset:
return min( dirsize - winsize, max( 0, index - halfwinsize ))
if original > dirsize - winsize:
self.target.scroll_begin = dirsize - winsize
return self.get_scroll_begin()
if projected < upper_limit and projected > lower_limit:
return original
if projected > upper_limit:
return min( dirsize - winsize,
original + (projected - upper_limit))
if projected < upper_limit:
return max( 0,
original - (lower_limit - projected))
return original
def set_scroll_begin(self):
self.scroll_begin = self.get_scroll_begin()
self.target.scroll_begin = self.scroll_begin
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