##// END OF EJS Templates
BUG: Scrolling pager in vsplit on Mac OSX tears....
BUG: Scrolling pager in vsplit on Mac OSX tears. On Mac OS X, scrolling the pager when it is split vertically causes the help text to tear (i.e. the help text is unreadable). This hack attempts to make it a little better although the solution may not be optimal at all. Closes #1150, rebased to prevent recursive merge.

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styles.py
119 lines | 3.9 KiB | text/x-python | PythonLexer
""" Style utilities, templates, and defaults for syntax highlighting widgets.
"""
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from colorsys import rgb_to_hls
from pygments.styles import get_style_by_name
from pygments.token import Token
#-----------------------------------------------------------------------------
# Constants
#-----------------------------------------------------------------------------
# The default light style sheet: black text on a white background.
default_light_style_template = '''
QPlainTextEdit, QTextEdit { background-color: %(bgcolor)s;
color: %(fgcolor)s ;
selection-background-color: %(select)s}
.error { color: red; }
.in-prompt { color: navy; }
.in-prompt-number { font-weight: bold; }
.out-prompt { color: darkred; }
.out-prompt-number { font-weight: bold; }
'''
default_light_style_sheet = default_light_style_template%dict(
bgcolor='white', fgcolor='black', select="#ccc")
default_light_syntax_style = 'default'
# The default dark style sheet: white text on a black background.
default_dark_style_template = '''
QPlainTextEdit, QTextEdit { background-color: %(bgcolor)s;
color: %(fgcolor)s ;
selection-background-color: %(select)s}
QFrame { border: 1px solid grey; }
.error { color: red; }
.in-prompt { color: lime; }
.in-prompt-number { color: lime; font-weight: bold; }
.out-prompt { color: red; }
.out-prompt-number { color: red; font-weight: bold; }
'''
default_dark_style_sheet = default_dark_style_template%dict(
bgcolor='black', fgcolor='white', select="#555")
default_dark_syntax_style = 'monokai'
# The default monochrome
default_bw_style_sheet = '''
QPlainTextEdit, QTextEdit { background-color: white;
color: black ;
selection-background-color: #cccccc}
.in-prompt-number { font-weight: bold; }
.out-prompt-number { font-weight: bold; }
'''
default_bw_syntax_style = 'bw'
def hex_to_rgb(color):
"""Convert a hex color to rgb integer tuple."""
if color.startswith('#'):
color = color[1:]
if len(color) == 3:
color = ''.join([c*2 for c in color])
if len(color) != 6:
return False
try:
r = int(color[:2],16)
g = int(color[:2],16)
b = int(color[:2],16)
except ValueError:
return False
else:
return r,g,b
def dark_color(color):
"""Check whether a color is 'dark'.
Currently, this is simply whether the luminance is <50%"""
rgb = hex_to_rgb(color)
if rgb:
return rgb_to_hls(*rgb)[1] < 128
else: # default to False
return False
def dark_style(stylename):
"""Guess whether the background of the style with name 'stylename'
counts as 'dark'."""
return dark_color(get_style_by_name(stylename).background_color)
def get_colors(stylename):
"""Construct the keys to be used building the base stylesheet
from a templatee."""
style = get_style_by_name(stylename)
fgcolor = style.style_for_token(Token.Text)['color'] or ''
if len(fgcolor) in (3,6):
# could be 'abcdef' or 'ace' hex, which needs '#' prefix
try:
int(fgcolor, 16)
except TypeError:
pass
else:
fgcolor = "#"+fgcolor
return dict(
bgcolor = style.background_color,
select = style.highlight_color,
fgcolor = fgcolor
)
def sheet_from_template(name, colors='lightbg'):
"""Use one of the base templates, and set bg/fg/select colors."""
colors = colors.lower()
if colors=='lightbg':
return default_light_style_template%get_colors(name)
elif colors=='linux':
return default_dark_style_template%get_colors(name)
elif colors=='nocolor':
return default_bw_style_sheet
else:
raise KeyError("No such color scheme: %s"%colors)