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# Copyright (C) 2015 James E. Blair <corvus@gnu.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import subprocess
import HTMLParser
import re
import PIL
import PIL.ExifTags
import urwid
import slide
def nearest_color(x):
if x < 0x30: return '0'
if x < 0x70: return '6'
if x < 0x98: return '8'
if x < 0xc0: return 'a'
if x < 0xe8: return 'd'
return 'f'
class ANSIImage(urwid.Widget):
def __init__(self, uri, hinter=None, scale=1, background=None):
super(ANSIImage, self).__init__()
self.uri = uri
image = self._loadImage()
self.htmlparser = HTMLParser.HTMLParser()
self.ratio = float(image.size[0])/float(image.size[1])
self.hinter = hinter
if scale > 1:
scale = 1
self.scale = scale
self.background = background or 'black'
def _loadImage(self):
image = PIL.Image.open(self.uri)
image.load()
try:
exif = image._getexif()
except AttributeError:
# No info on whether we should rotate image
exif = None
if exif:
orientation = exif.get(274, 1)
if orientation == 1:
pass
elif orientation == 3:
image = image.rotate(180)
elif orientation == 6:
image = image.rotate(-90)
elif orientation == 8:
image = image.rotate(90)
return image
def pack(self, size, focus=False):
cols = size[0]
if len(size) > 1:
rows = size[1]
elif self.hinter:
rows = self.hinter.getSize()[1]
else:
rows = None
width = cols
height = int(cols*(1.0/self.ratio)/2.0)
if rows is not None and height > rows:
height = rows
width = int(rows*self.ratio*2.0)
return (width, height)
def rows(self, size, focus=False):
r = self.pack(size)
return r[1]
SPAN_RE = re.compile(r"<span style='color:#(......); background-color:#(......);'>(.*)")
def render(self, size, focus=False):
spanre = self.SPAN_RE
htmlparser = self.htmlparser
# Calculate image size and any bounding box
total_width, total_height = self.pack(size, focus)
width, height = self.pack([s * self.scale for s in size], focus)
width = int(width)
height = int(height)
top_pad = (total_height - height) // 2
bottom_pad = total_height - height - top_pad
left_pad = (total_width - width) // 2
right_pad = total_width - width - left_pad
padding_attr = urwid.AttrSpec(self.background, self.background)
jp2a = subprocess.Popen(['jp2a', '--colors', '--fill',
'--width=%s' % width,
'--height=%s' % height,
'--html-raw', '-'],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
image = self._loadImage()
image = image.convert('RGBA')
image.save(jp2a.stdin, 'JPEG')
jp2a.stdin.close()
data = jp2a.stdout.read()
jp2a.stderr.read()
jp2a.wait()
line_list = []
attr_list = []
line_text = ''
line_attrs = []
current_attr = [None, 0]
current_fg = None
current_bg = None
current_props = None
# Top pad
for padding in range(0, top_pad):
line_list.append(' ' * total_width)
attr_list.append([(padding_attr, 1)] * total_width)
for line in data.split('<br/>'):
if not line:
continue
# Left pad
line_text += ' ' * left_pad
for fake_attr in range(0, left_pad):
line_attrs.append((padding_attr, 1))
for span in line.split('</span>'):
if not span:
continue
m = spanre.match(span)
fg, bg, char = m.groups()
if '&' in char:
char = htmlparser.unescape(char)
char = char.encode('utf8')
line_text += char
props = []
# TODO: if bold is set, append bold to props
fg = ('#'+
nearest_color(int(fg[0:2], 16)) +
nearest_color(int(fg[2:4], 16)) +
nearest_color(int(fg[4:6], 16)))
bg = ('#'+
nearest_color(int(bg[0:2], 16)) +
nearest_color(int(bg[2:4], 16)) +
nearest_color(int(bg[4:6], 16)))
if current_fg == fg and current_bg == bg and current_props == props:
current_attr[1] += len(char)
else:
if current_attr[0]:
line_attrs.append(tuple(current_attr))
fg = ', '.join(props + [fg])
attr = urwid.AttrSpec(fg, bg)
current_attr = [attr, len(char)]
current_fg = fg
current_bg = bg
current_props = props
line_attrs.append(tuple(current_attr))
current_attr = [None, 0]
current_fg = None
current_bg = None
# Right pad
line_text += ' ' * right_pad
for fake_attr in range(0, right_pad):
line_attrs.append((padding_attr, 1))
line_list.append(line_text)
line_text = ''
attr_list.append(line_attrs)
line_attrs = []
# Bottom pad
for padding in range(0, bottom_pad):
line_list.append(' ' * total_width)
attr_list.append([(padding_attr, 1)] * total_width)
canvas = urwid.TextCanvas(line_list, attr_list)
return canvas
def main():
import PIL.Image
img = PIL.Image.open('/tmp/p/8.jpg')
img.load()
hinter = slide.ScreenHinter()
hinter.set_cols_rows((80, 25))
w = ANSIImage(img, hinter)
slpile = slide.SlidePile([])
slpile.contents.append((w, slpile.options()))
pad = slide.SlidePadding(slpile, align='center', width='pack')
fill = slide.SlideFiller(pad)
#w.render((80,25))
fill.render((80,25))
screen = urwid.raw_display.Screen()
if True:
with screen.start():
screen.draw_screen((80,25), fill.render((80,25)))
raw_input()
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