diff options
Diffstat (limited to 'ranger/core/actions.py')
| -rw-r--r-- | ranger/core/actions.py | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/ranger/core/actions.py b/ranger/core/actions.py index 59eef2be..d0ccfe2b 100644 --- a/ranger/core/actions.py +++ b/ranger/core/actions.py @@ -51,6 +51,7 @@ class Actions(FileManagerAware, EnvironmentAware, SettingsAware): def reset(self): """Reset the filemanager, clearing the directory buffer""" old_path = self.env.cwd.path + self.previews = {} self.env.garbage_collect(-1) self.enter_dir(old_path) @@ -572,6 +573,61 @@ class Actions(FileManagerAware, EnvironmentAware, SettingsAware): pager.set_source(self.env.cf.get_preview_source(pager.wid, pager.hei)) # -------------------------- + # -- Previews + # -------------------------- + def get_preview(self, path, width, height): + if self.settings.preview_script: + # self.previews is a 2 dimensional dict: + # self.previews['/tmp/foo.jpg'][(80, 24)] = "the content..." + # self.previews['/tmp/foo.jpg']['loading'] = False + # A -1 in tuples means "any"; (80, -1) = wid. of 80 and any hei. + try: + data = self.previews[path] + except: + data = self.previews[path] = {'loading': False} + else: + if data['loading']: + return None + + found = data.get((-1, -1), data.get((width, -1), + data.get((-1, height), data.get((width, height), False)))) + if found == False: + data['loading'] = True + loadable = CommandLoader(args=[self.settings.preview_script, + path, str(width), str(height)], + silent=True, descr="Getting preview of %s" % path) + def on_after(signal): + exit = signal.process.poll() + content = signal.process.stdout.read() + if exit == 0: + data[(width, height)] = content + elif exit == 3: + data[(-1, height)] = content + elif exit == 4: + data[(width, -1)] = content + elif exit == 5: + data[(-1, -1)] = content + else: + data[(-1, -1)] = None # XXX + if self.env.cf.path == path: + self.ui.browser.pager.need_redraw = True + self.ui.browser.need_redraw = True + data['loading'] = False + def on_destroy(signal): + try: + del self.previews[path] + except: + pass + loadable.signal_bind('after', on_after) + loadable.signal_bind('destroy', on_destroy) + self.loader.add(loadable) + return None + else: + return found + else: + return open(path, 'r') + + # -------------------------- # -- Tabs # -------------------------- # This implementation of tabs is very simple and keeps track of |