diff options
Diffstat (limited to 'ranger/ext/img_display.py')
| -rw-r--r-- | ranger/ext/img_display.py | 75 |
1 files changed, 43 insertions, 32 deletions
diff --git a/ranger/ext/img_display.py b/ranger/ext/img_display.py index 5b2632da..c40c084a 100644 --- a/ranger/ext/img_display.py +++ b/ranger/ext/img_display.py @@ -15,12 +15,13 @@ import errno import fcntl import imghdr import os -import select import struct import sys +from subprocess import Popen, PIPE + import termios + from ranger.core.shared import FileManagerAware -from subprocess import Popen, PIPE W3MIMGDISPLAY_ENV = "W3MIMGDISPLAY_PATH" W3MIMGDISPLAY_OPTIONS = [] @@ -70,7 +71,8 @@ class W3MImageDisplayer(ImageDisplayer): stdin=PIPE, stdout=PIPE, universal_newlines=True) self.is_initialized = True - def _find_w3mimgdisplay_executable(self): + @staticmethod + def _find_w3mimgdisplay_executable(): paths = [os.environ.get(W3MIMGDISPLAY_ENV, None)] + W3MIMGDISPLAY_PATHS for path in paths: if path is not None and os.path.exists(path): @@ -84,10 +86,10 @@ class W3MImageDisplayer(ImageDisplayer): # pixels. if self.binary_path is None: self.binary_path = self._find_w3mimgdisplay_executable() - s = struct.pack("HHHH", 0, 0, 0, 0) + farg = struct.pack("HHHH", 0, 0, 0, 0) fd_stdout = sys.stdout.fileno() - x = fcntl.ioctl(fd_stdout, termios.TIOCGWINSZ, s) - rows, cols, xpixels, ypixels = struct.unpack("HHHH", x) + fretint = fcntl.ioctl(fd_stdout, termios.TIOCGWINSZ, farg) + rows, cols, xpixels, ypixels = struct.unpack("HHHH", fretint) if xpixels == 0 and ypixels == 0: process = Popen([self.binary_path, "-test"], stdout=PIPE, universal_newlines=True) @@ -124,11 +126,11 @@ class W3MImageDisplayer(ImageDisplayer): try: self.process.stdin.write(cmd) - except IOError as e: - if e.errno == errno.EPIPE: + except IOError as ex: + if ex.errno == errno.EPIPE: return else: - raise e + raise ex self.process.stdin.flush() self.process.stdout.readline() @@ -236,19 +238,20 @@ class ITerm2ImageDisplayer(ImageDisplayer, FileManagerAware): min_scale = min(width_scale, height_scale) max_scale = max(width_scale, height_scale) if width * max_scale <= max_width and height * max_scale <= max_height: - return (width * max_scale) + return width * max_scale else: - return (width * min_scale) + return width * min_scale else: scale = max_height / float(height) - return (width * scale) + return width * scale elif width > max_width: scale = max_width / float(width) - return (width * scale) + return width * scale else: return width - def _encode_image_content(self, path): + @staticmethod + def _encode_image_content(path): """Read and encode the contents of path""" file = open(path, 'rb') try: @@ -258,7 +261,8 @@ class ITerm2ImageDisplayer(ImageDisplayer, FileManagerAware): finally: file.close() - def _get_image_dimensions(self, path): + @staticmethod + def _get_image_dimensions(path): """Determine image size using imghdr""" file_handle = open(path, 'rb') file_header = file_handle.read(24) @@ -306,17 +310,19 @@ class URXVTImageDisplayer(ImageDisplayer, FileManagerAware): """ - def _get_max_sizes(self): + @staticmethod + def _get_max_sizes(): """Use the whole terminal.""" - w = 100 - h = 100 - return w, h + pct_width = 100 + pct_height = 100 + return pct_width, pct_height - def _get_centered_offsets(self): + @staticmethod + def _get_centered_offsets(): """Center the image.""" - x = 50 - y = 50 - return x, y + pct_x = 50 + pct_y = 50 + return pct_x, pct_y def _get_sizes(self): """Return the width and height of the preview pane in relation to the @@ -328,18 +334,18 @@ class URXVTImageDisplayer(ImageDisplayer, FileManagerAware): total_columns_ratio = sum(self.fm.settings.column_ratios) preview_column_ratio = self.fm.settings.column_ratios[-1] - w = int((100 * preview_column_ratio) / total_columns_ratio) - h = 100 # As much as possible while preserving the aspect ratio. - return w, h + pct_width = int((100 * preview_column_ratio) / total_columns_ratio) + pct_height = 100 # As much as possible while preserving the aspect ratio. + return pct_width, pct_height def _get_offsets(self): """Return the offsets of the image center.""" if self.fm.ui.pager.visible: return self._get_centered_offsets() - x = 100 # Right-aligned. - y = 2 # TODO: Use the font size to calculate this offset. - return x, y + pct_x = 100 # Right-aligned. + pct_y = 2 # TODO: Use the font size to calculate this offset. + return pct_x, pct_y def draw(self, path, start_x, start_y, width, height): # The coordinates in the arguments are ignored as urxvt takes @@ -347,10 +353,15 @@ class URXVTImageDisplayer(ImageDisplayer, FileManagerAware): # image center as a percentage of the terminal size. As a # result all values below are in percents. - x, y = self._get_offsets() - w, h = self._get_sizes() + pct_x, pct_y = self._get_offsets() + pct_width, pct_height = self._get_sizes() - sys.stdout.write("\033]20;{path};{w}x{h}+{x}+{y}:op=keep-aspect\a".format(**vars())) + sys.stdout.write( + "\033]20;{path};{pct_width}x{pct_height}+{pct_x}+{pct_y}:op=keep-aspect\a".format( + path=path, pct_width=pct_width, pct_height=pct_height, + pct_x=pct_x, pct_y=pct_y, + ) + ) sys.stdout.flush() def clear(self, start_x, start_y, width, height): |