final style fixes - suckless/dwm - Unnamed repository; edit this file 'description' to name the repository.

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author	Anselm R Garbe <garbeam@gmail.com>	2009-07-14 16:26:04 +0100
committer	Anselm R Garbe <garbeam@gmail.com>	2009-07-14 16:26:04 +0100
commit	450b08dde2409846201175e226158ad4e2c61ea1 (patch)
tree	4dcd78b8f86c4b993c2e0af80d4afe90fb5469bc /LICENSE
parent	da80487c070b4004bf7451b069472b66320030f8 (diff)
download	dwm-450b08dde2409846201175e226158ad4e2c61ea1.tar.gz

final style fixes 5.6

Diffstat (limited to 'LICENSE')

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# This software is distributed under the terms of the GNU GPL version 3. """Interface for w3mimgdisplay to draw images into the console This module provides functions to draw images in the terminal using w3mimgdisplay, an utilitary program from w3m (a text-based web browser). w3mimgdisplay can display images either in virtual tty (using linux framebuffer) or in a Xorg session. w3m need to be installed for this to work. """ import fcntl import os import select import struct import sys import termios from subprocess import Popen, PIPE W3MIMGDISPLAY_PATH = '/usr/lib/w3m/w3mimgdisplay' W3MIMGDISPLAY_OPTIONS = [] class ImgDisplayUnsupportedException(Exception): pass class ImageDisplayer(object): is_initialized = False def initialize(self): """start w3mimgdisplay""" self.binary_path = os.environ.get("W3MIMGDISPLAY_PATH", None) if not self.binary_path: self.binary_path = W3MIMGDISPLAY_PATH self.process = Popen([self.binary_path] + W3MIMGDISPLAY_OPTIONS, stdin=PIPE, stdout=PIPE, universal_newlines=True) self.is_initialized = True def draw(self, path, start_x, start_y, width, height): """Draw an image at the given coordinates.""" if not self.is_initialized or self.process.poll() is not None: self.initialize() self.process.stdin.write(self._generate_w3m_input(path, start_x, start_y, width, height)) self.process.stdin.flush() self.process.stdout.readline() def clear(self, start_x, start_y, width, height): """Clear a part of terminal display.""" if not self.is_initialized or self.process.poll() is not None: self.initialize() fontw, fonth = _get_font_dimensions() cmd = "6;{x};{y};{w};{h}\n4;\n3;\n".format( x = start_x * fontw, y = start_y * fonth, w = (width + 1) * fontw, h = height * fonth) self.process.stdin.write(cmd) self.process.stdin.flush() self.process.stdout.readline() def _generate_w3m_input(self, path, start_x, start_y, max_width, max_height): """Prepare the input string for w3mimgpreview start_x, start_y, max_height and max_width specify the drawing area. They are expressed in number of characters. """ fontw, fonth = _get_font_dimensions() if fontw == 0 or fonth == 0: raise ImgDisplayUnsupportedException() max_width_pixels = max_width * fontw max_height_pixels = max_height * fonth # get image size cmd = "5;{}\n".format(path) self.process.stdin.write(cmd) self.process.stdin.flush() output = self.process.stdout.readline().split() if len(output) != 2: raise Exception('Failed to execute w3mimgdisplay', output) width = int(output[0]) height = int(output[1]) # get the maximum image size preserving ratio if width > max_width_pixels: height = (height * max_width_pixels) // width width = max_width_pixels if height > max_height_pixels: width = (width * max_height_pixels) // height height = max_height_pixels return "0;1;{x};{y};{w};{h};;;;;{filename}\n4;\n3;\n".format( x = start_x * fontw, y = start_y * fonth, w = width, h = height, filename = path) def quit(self): if self.is_initialized: self.process.kill() def _get_font_dimensions(): # Get the height and width of a character displayed in the terminal in # pixels. s = 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) if xpixels == 0 and ypixels == 0: binary_path = os.environ.get("W3MIMGDISPLAY_PATH", None) if not binary_path: binary_path = W3MIMGDISPLAY_PATH process = Popen([binary_path, "-test"], stdout=PIPE, universal_newlines=True) output, _ = process.communicate() output = output.split() xpixels, ypixels = int(output[0]), int(output[1]) # adjust for misplacement xpixels += 2 ypixels += 2 return (xpixels // cols), (ypixels // rows)


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