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added panela/ (currently used to generate firstpage-v2)

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Igor Chubin 2018-05-21 20:43:17 +00:00
parent ec73ad8482
commit 70e06280a1
4 changed files with 663 additions and 0 deletions
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lib/panela/.panela_colors.py.swp Normal file
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lib/panela/colors.json Normal file
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import os
import json
COLORS_JSON = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'colors.json')
COLOR_TABLE = json.loads(open(COLORS_JSON, 'r').read())
VALID_COLORS = [x['hexString'] for x in COLOR_TABLE]
HEX_TO_ANSI = {x['hexString']:x['colorId'] for x in COLOR_TABLE}
def rgb_from_str(s):
# s starts with a #.
r, g, b = int(s[1:3],16), int(s[3:5], 16),int(s[5:7], 16)
return r, g, b
def find_nearest_color(hex_color):
R, G, B = rgb_from_str(hex_color)
mindiff = None
for d in VALID_COLORS:
r, g, b = rgb_from_str(d)
diff = abs(R -r)*256 + abs(G-g)* 256 + abs(B- b)* 256
if mindiff is None or diff < mindiff:
mindiff = diff
mincolorname = d
return mincolorname

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lib/panela/panela_colors.py Normal file
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# vim: encoding=utf-8
import sys
import colored
import itertools
"""
After panela will be ready for it, it will be splitted out in a separate project,
that will be used for all chubin's console services.
There are several features that not yet implemented (see ___doc___ in Panela)
TODO:
* html output
* png output
"""
from wcwidth import wcswidth
from colors import find_nearest_color, HEX_TO_ANSI, rgb_from_str
import pyte
# http://stackoverflow.com/questions/19782975/convert-rgb-color-to-the-nearest-color-in-palette-web-safe-color
# pylint: disable=invalid-name
def color_mapping(clr):
if clr == 'default':
return None
return clr
class Point(object):
"""
One point (character) on a terminal
"""
def __init__(self, char=None, foreground=None, background=None):
self.foreground = foreground
self.background = background
self.char = char
class Panela:
"""
To implement:
Blocks manipulation:
[*] copy
[*] crop
[*] cut
[*] extend
[ ] join
[ ] move
[*] paste
[*] strip
Colors manipulation:
[*] paint foreground/background
[*] paint_line
[ ] paint_svg
[ ] fill background
[ ] fill_line
[ ] fill_svg
[ ] trans
Drawing:
[*] put_point
[*] put_line
[*] put_circle
[*] put_rectangle
Printing and reading:
ansi reads vt100 sequence
"""
def __init__(self, x=80, y=25, panela=None, field=None):
if panela:
self.field = [x for x in panela.field]
self.size_x = panela.size_x
self.size_y = panela.size_y
return
if field:
self.field = field
self.size_x = len(field[0])
self.size_y = len(field)
return
self.field = [[Point() for _ in range(x)] for _ in range(y)]
self.size_x = x
self.size_y = y
def in_field(self, col, row):
if col < 0:
return False
if row < 0:
return False
if col >= self.size_x:
return False
if row >= self.size_y:
return False
return True
#
# Blocks manipulation
#
def copy(self, x1, y1, x2, y2):
if x1 < 0:
x1 += self.size_x
if x2 < 0:
x2 += self.size_x
if x1 > x2:
x1, x2 = x2, x1
if y1 < 0:
y1 += self.size_y
if y2 < 0:
y2 += self.size_y
if y1 > y2:
y1, y2 = y2, y1
field = [self.field[i] for i in range(y1, y2+1)]
field = [line[x1:x2+1] for line in field]
return Panela(field=field)
def cut(self, x1, y1, x2, y2):
"""
"""
if x1 < 0:
x1 += self.size_x
if x2 < 0:
x2 += self.size_x
if x1 > x2:
x1, x2 = x2, x1
if y1 < 0:
y1 += self.size_y
if y2 < 0:
y2 += self.size_y
if y1 > y2:
y1, y2 = y2, y1
copied = self.copy(x1, y1, x2, y2)
for y in range(y1, y2+1):
for x in range(x1, x2+1):
self.field[y][x] = Point()
return copied
def extend(self, cols=None, rows=None):
"""
Adds [cols] columns from the right
and [rows] rows from the bottom
"""
if cols and cols > 0:
self.field = [x + [Point() for _ in range(cols)] for x in self.field]
self.size_x += cols
if rows and rows > 0:
self.field = self.field + [[Point() for _ in range(self.size_x)] for _ in range(rows)]
self.size_y += rows
def crop(self, left=None, right=None, top=None, bottom=None):
"""
Crop panela.
Remove <left>, <right> columns from left or right,
and <top> and <bottom> rows from top and bottom.
"""
if left:
if left >= self.size_x:
left = self.size_x
self.field = [x[left:] for x in self.field]
self.size_x -= left
if right:
if right >= self.size_x:
right = self.size_x
self.field = [x[:-right] for x in self.field]
self.size_x -= right
if top:
if top >= self.size_y:
top = self.size_y
self.field = self.field[top:]
self.size_y -= top
if bottom:
if bottom >= self.size_y:
bottom = self.size_y
self.field = self.field[:-bottom]
self.size_y -= bottom
def paste(self, panela, x1, y1, extend=False, transparence=False):
"""
Paste <panela> starting at <x1>, <y1>.
If <extend> is True current panela space will be automatically extended
If <transparence> is True, then <panela> is overlayed and characters behind them are seen
"""
# FIXME:
# negative x1, y1
# x1,y1 > size_x, size_y
if extend:
x_extend = 0
y_extend = 0
if x1 + panela.size_x > self.size_x:
x_extend = x1 + panela.size_x - self.size_x
if y1 + panela.size_y > self.size_y:
y_extend = y1 + panela.size_y - self.size_y
self.extend(cols=x_extend, rows=y_extend)
for i in range(y1, min(self.size_y, y1+panela.size_y)):
for j in range(x1, min(self.size_x, x1+panela.size_x)):
if transparence:
if panela.field[i-y1][j-x1].char and panela.field[i-y1][j-x1].char != " ":
if panela.field[i-y1][j-x1].foreground:
self.field[i][j].foreground = panela.field[i-y1][j-x1].foreground
if panela.field[i-y1][j-x1].background:
self.field[i][j].background = panela.field[i-y1][j-x1].background
self.field[i][j].char = panela.field[i-y1][j-x1].char
else:
self.field[i][j] = panela.field[i-y1][j-x1]
def strip(self):
"""
Strip panela: remove empty spaces around panels rectangle
"""
def left_spaces(line):
answer = 0
for elem in line:
if not elem.char:
answer += 1
else:
break
return answer
def right_spaces(line):
return left_spaces(line[::-1])
def empty_line(line):
return left_spaces(line) == len(line)
left_space = []
right_space = []
for line in self.field:
left_space.append(left_spaces(line))
right_space.append(right_spaces(line))
left = min(left_space)
right = min(right_space)
top = 0
while top < self.size_y and empty_line(self.field[top]):
top += 1
bottom = 0
while bottom < self.size_y and empty_line(self.field[-(bottom+1)]):
bottom += 1
self.crop(left=left, right=right, top=top, bottom=bottom)
#
# Drawing and painting
#
def put_point(self, col, row, char=None, color=None, background=None):
"""
Puts charachter with color and background color on the field.
Char can be a Point or a character.
"""
if not self.in_field(col, row):
return
if isinstance(char, Point):
self.field[row][col] = char
elif char is None:
if background:
self.field[row][col].background = background
if color:
self.field[row][col].foreground = color
else:
self.field[row][col] = Point(char=char, foreground=color, background=background)
def put_string(self, col, row, s=None, color=None, background=None):
"""
Put string <s> with foreground color <color> and background color <background>
ad <col>, <row>
"""
for i, c in enumerate(s):
self.put_point(col+i, row, c, color=color, background=background)
def put_line(self, x1, y1, x2, y2, char=None, color=None, background=None):
"""
Draw line (x1, y1) - (x2, y2) fith foreground color <color>, background color <background>
and charachter <char>, if specified.
"""
def get_line(start, end):
"""Bresenham's Line Algorithm
Produces a list of tuples from start and end
Source: http://www.roguebasin.com/index.php?title=Bresenham%27s_Line_Algorithm#Python
>>> points1 = get_line((0, 0), (3, 4))
>>> points2 = get_line((3, 4), (0, 0))
>>> assert(set(points1) == set(points2))
>>> print points1
[(0, 0), (1, 1), (1, 2), (2, 3), (3, 4)]
>>> print points2
[(3, 4), (2, 3), (1, 2), (1, 1), (0, 0)]
"""
# Setup initial conditions
x1, y1 = start
x2, y2 = end
dx = x2 - x1
dy = y2 - y1
# Determine how steep the line is
is_steep = abs(dy) > abs(dx)
# Rotate line
if is_steep:
x1, y1 = y1, x1
x2, y2 = y2, x2
# Swap start and end points if necessary and store swap state
swapped = False
if x1 > x2:
x1, x2 = x2, x1
y1, y2 = y2, y1
swapped = True
# Recalculate differentials
dx = x2 - x1
dy = y2 - y1
# Calculate error
error = int(dx / 2.0)
ystep = 1 if y1 < y2 else -1
# Iterate over bounding box generating points between start and end
y = y1
points = []
for x in range(x1, x2 + 1):
coord = (y, x) if is_steep else (x, y)
points.append(coord)
error -= abs(dy)
if error < 0:
y += ystep
error += dx
# Reverse the list if the coordinates were swapped
if swapped:
points.reverse()
return points
if color and not isinstance(color, basestring):
color_iter = itertools.cycle(color)
else:
color_iter = itertools.repeat(color)
if background and not isinstance(background, basestring):
background_iter = itertools.cycle(background)
else:
background_iter = itertools.repeat(background)
if char:
char_iter = itertools.cycle(char)
else:
char_iter = itertools.repeat(char)
for x, y in get_line((x1,y1), (x2, y2)):
char = char_iter.next()
color = color_iter.next()
background = next(background_iter)
self.put_point(x, y, char=char, color=color, background=background)
def paint(self, x1, y1, x2, y2, c1, c2=None, bg1=None, bg2=None, angle=None, angle_bg=None):
"""
Paint rectangle (x1,y1) (x2,y2) with foreground color c1 and background bg1 if specified.
If spefied colors c2/bg2, rectangle is painted with linear gradient (inclined under angle).
"""
def calculate_color(i, j):
if angle == None:
a = 0
else:
a = angle
r1, g1, b1 = rgb_from_str(c1)
r2, g2, b2 = rgb_from_str(c2)
k = 1.0*(j-x1)/(x2-x1)*(1-a)
l = 1.0*(i-y1)/(y2-y1)*a
r3, g3, b3 = int(r1 + 1.0*(r2-r1)*(k+l)), int(g1 + 1.0*(g2-g1)*(k+l)), int(b1 + 1.0*(b2-b1)*(k+l))
return "#%02x%02x%02x" % (r3, g3, b3)
def calculate_bg(i, j):
if angle_bg == None:
a = 0
else:
a = angle
r1, g1, b1 = rgb_from_str(bg1)
r2, g2, b2 = rgb_from_str(bg2)
k = 1.0*(j-x1)/(x2-x1)*(1-a)
l = 1.0*(i-y1)/(y2-y1)*a
r3, g3, b3 = int(r1 + 1.0*(r2-r1)*(k+l)), int(g1 + 1.0*(g2-g1)*(k+l)), int(b1 + 1.0*(b2-b1)*(k+l))
return "#%02x%02x%02x" % (r3, g3, b3)
if c2 == None:
for i in range(y1,y2):
for j in range(x1, x2):
self.field[i][j].foreground = c1
if bg1:
if bg2:
self.field[i][j].background = calculate_bg(i, j)
else:
self.field[i][j].background = bg1
else:
for i in range(y1,y2):
for j in range(x1, x2):
self.field[i][j].foreground = calculate_color(i, j)
if bg1:
if bg2:
self.field[i][j].background = calculate_bg(i, j)
else:
self.field[i][j].background = bg1
return self
def put_rectangle(self, x1, y1, x2, y2, char=None, frame=None, color=None, background=None):
"""
Draw rectangle (x1,y1), (x2,y2) using <char> character, <color> and <background> color
"""
frame_chars = {
'ascii': u'++++-|',
'single': u'┌┐└┘─│',
'double': u'┌┐└┘─│',
}
if frame in frame_chars:
chars = frame_chars[frame]
else:
chars = char*6
for x in range(x1, x2):
self.put_point(x, y1, char=chars[4], color=color, background=background)
self.put_point(x, y2, char=chars[4], color=color, background=background)
for y in range(y1, y2):
self.put_point(x1, y, char=chars[5], color=color, background=background)
self.put_point(x2, y, char=chars[5], color=color, background=background)
self.put_point(x1, y1, char=chars[0], color=color, background=background)
self.put_point(x2, y1, char=chars[1], color=color, background=background)
self.put_point(x1, y2, char=chars[2], color=color, background=background)
self.put_point(x2, y2, char=chars[3], color=color, background=background)
def put_circle(self, x0, y0, radius, char=None, color=None, background=None):
"""
Draw cricle with center in (x, y) and radius r (x1,y1), (x2,y2)
using <char> character, <color> and <background> color
"""
def k(x):
return int(x*1.9)
f = 1 - radius
ddf_x = 1
ddf_y = -2 * radius
x = 0
y = radius
self.put_point(x0, y0 + radius, char=char, color=color, background=background)
self.put_point(x0, y0 - radius, char=char, color=color, background=background)
self.put_point(x0 + k(radius), y0, char=char, color=color, background=background)
self.put_point(x0 - k(radius), y0, char=char, color=color, background=background)
char = "x"
while x < y:
if f >= 0:
y -= 1
ddf_y += 2
f += ddf_y
x += 1
ddf_x += 2
f += ddf_x
self.put_point(x0 + k(x), y0 + y, char=char, color=color, background=background)
self.put_point(x0 - k(x), y0 + y, char=char, color=color, background=background)
self.put_point(x0 + k(x), y0 - y, char=char, color=color, background=background)
self.put_point(x0 - k(x), y0 - y, char=char, color=color, background=background)
self.put_point(x0 + k(y), y0 + x, char=char, color=color, background=background)
self.put_point(x0 - k(y), y0 + x, char=char, color=color, background=background)
self.put_point(x0 + k(y), y0 - x, char=char, color=color, background=background)
self.put_point(x0 - k(y), y0 - x, char=char, color=color, background=background)
def read_ansi(self, seq, x=0, y=0, transparence=True):
"""
Read ANSI sequence and render it to the panela starting from x and y.
If transparence is True, replace spaces with ""
"""
screen = pyte.screens.Screen(self.size_x, self.size_y+1)
stream = pyte.streams.ByteStream()
stream.attach(screen)
stream.feed(seq.replace('\n', '\r\n'))
for i, line in sorted(screen.buffer.items(), key=lambda x: x[0]):
for j, char in sorted(line.items(), key=lambda x: x[0]):
if j >= self.size_x:
break
self.field[i][j] = Point(char.data, color_mapping(char.fg), color_mapping(char.bg))
def __str__(self):
answer = ""
skip_next = False
for i, line in enumerate(self.field):
for j, c in enumerate(line):
fg_ansi = ""
bg_ansi = ""
stop = ""
if self.field[i][j].foreground:
fg_ansi = '\033[38;2;%s;%s;%sm' % rgb_from_str(self.field[i][j].foreground)
stop = colored.attr("reset")
if self.field[i][j].background:
bg_ansi = '\033[48;2;%s;%s;%sm' % rgb_from_str(self.field[i][j].background)
stop = colored.attr("reset")
char = c.char or " "
if not skip_next:
answer += fg_ansi + bg_ansi + char.encode('utf-8') + stop
skip_next = wcswidth(char) == 2
# answer += "...\n"
answer += "\n"
return answer
########################################################################################################
class Template(object):
def __init__(self):
self._mode = 'page'
self.page = []
self.mask = []
self.code = []
self.panela = None
self._colors = {
'A': '#00cc00',
'B': '#00cc00',
'C': '#00aacc',
'D': '#888888',
'E': '#cccc00',
'F': '#ff0000',
'H': '#22aa22',
'I': '#cc0000',
'J': '#000000',
}
self._bg_colors = {
'G': '#555555',
'J': '#555555',
}
def _process_line(self, line):
if line == 'mask':
self._mode = 'mask'
if line == '':
self._mode = 'code'
def read(self, filename):
"""
Read template from `filename`
"""
with open(filename) as f:
self._mode = 'page'
for line in f.readlines():
line = line.rstrip('\n')
if line.startswith('==[') and line.endswith(']=='):
self._process_line(line[3:-3].strip())
continue
if self._mode == 'page':
self.page.append(line)
elif self._mode == 'mask':
self.mask.append(line)
elif self._mode == 'code':
self.mask.append(line)
def apply_mask(self):
lines = self.page
x_size = max([len(x) for x in lines])
y_size = len(lines)
self.panela = Panela(x=x_size, y=y_size)
self.panela.read_ansi("".join("%s\n" % x for x in self.page))
for i, line in enumerate(self.mask):
for j, char in enumerate(line):
if char in self._colors or char in self._bg_colors:
color = self._colors.get(char)
bg_color = self._bg_colors.get(char)
self.panela.put_point(j, i, color=color, background=bg_color)
def show(self):
if self.panela:
return str(self.panela)
return self.page
def main():
"Only for experiments"
template = Template()
template.read("/home/igor/cheat.sh/share/firstpage-v2.pnl")
template.apply_mask()
sys.stdout.write(template.show())
if __name__ == '__main__':
main()