You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
242 lines
7.1 KiB
Python
242 lines
7.1 KiB
Python
# Copyright (C) 2007, Red Hat, Inc.
|
|
#
|
|
# This library is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU Lesser General Public
|
|
# License as published by the Free Software Foundation; either
|
|
# version 2 of the License, or (at your option) any later version.
|
|
#
|
|
# This library 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
|
|
# Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public
|
|
# License along with this library; if not, write to the
|
|
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
# Boston, MA 02111-1307, USA.
|
|
|
|
'''
|
|
The style module defines constants for spacing and sizing, as well as
|
|
classes for Colors and Fonts. Text rendering is handled by Pango and
|
|
colors are inputted by their HTML code (e.g. #FFFFFFFF)
|
|
|
|
All the constants are expressed in pixels. They are defined for the XO
|
|
screen and are usually adapted to different resolution by applying a
|
|
zoom factor.
|
|
'''
|
|
|
|
import os
|
|
import logging
|
|
|
|
from gi.repository import Gdk
|
|
from gi.repository import Pango
|
|
from gi.repository import Gio
|
|
|
|
|
|
FOCUS_LINE_WIDTH = 2
|
|
_TAB_CURVATURE = 1
|
|
ELLIPSIZE_MODE_DEFAULT = Pango.EllipsizeMode.END
|
|
|
|
|
|
def _compute_zoom_factor():
|
|
'''
|
|
Calculates zoom factor based on size of screen.
|
|
Returns double representing fraction of maximum possible screen size
|
|
'''
|
|
try:
|
|
scaling = int(os.environ.get('SUGAR_SCALING', '100'))
|
|
return scaling / 100.0
|
|
except ValueError:
|
|
logging.error('Invalid SUGAR_SCALING.')
|
|
|
|
return 1.0
|
|
|
|
|
|
class Font(object):
|
|
'''
|
|
A font defines the style of how the text should be rendered.
|
|
|
|
Args:
|
|
desc (str): a description of the Font object
|
|
'''
|
|
|
|
def __init__(self, desc):
|
|
self._desc = desc
|
|
|
|
def __str__(self):
|
|
'''
|
|
Returns description of font
|
|
'''
|
|
return self._desc
|
|
|
|
def get_pango_desc(self):
|
|
'''
|
|
Returns Pango description of font
|
|
'''
|
|
return Pango.FontDescription(self._desc)
|
|
|
|
|
|
class Color(object):
|
|
'''
|
|
A Color object defines a specific color.
|
|
|
|
Args:
|
|
color (str): String in the form #FFFFFF representing the color
|
|
|
|
alpha (double): transparency of color
|
|
'''
|
|
|
|
def __init__(self, color, alpha=1.0):
|
|
self._r, self._g, self._b = self._html_to_rgb(color)
|
|
self._a = alpha
|
|
|
|
def get_rgba(self):
|
|
'''
|
|
Returns 4-tuple of red, green, blue, and alpha levels in range 0-1
|
|
'''
|
|
return (self._r, self._g, self._b, self._a)
|
|
|
|
def get_int(self):
|
|
'''
|
|
Returns color encoded as an int, in the form rgba
|
|
'''
|
|
return int(self._a * 255) + (int(self._b * 255) << 8) + \
|
|
(int(self._g * 255) << 16) + (int(self._r * 255) << 24)
|
|
|
|
def get_gdk_color(self):
|
|
'''
|
|
Returns GDK standard color
|
|
'''
|
|
return Gdk.Color(int(self._r * 65535), int(self._g * 65535),
|
|
int(self._b * 65535))
|
|
|
|
def get_html(self):
|
|
'''
|
|
Returns string in the standard html Color format (#FFFFFF)
|
|
'''
|
|
return '#%02x%02x%02x' % (
|
|
int(self._r * 255), int(self._g * 255), int(self._b * 255))
|
|
|
|
def _html_to_rgb(self, html_color):
|
|
'''
|
|
Converts and returns (r, g, b) tuple in float format from
|
|
standard HTML format (#FFFFFF). Colors will be in range 0-1
|
|
|
|
Args:
|
|
html_color (string): html string in the format #FFFFFF
|
|
'''
|
|
|
|
html_color = html_color.strip()
|
|
if html_color[0] == '#':
|
|
html_color = html_color[1:]
|
|
if len(html_color) != 6:
|
|
raise ValueError('input #%s is not in #RRGGBB format' % html_color)
|
|
|
|
r, g, b = html_color[:2], html_color[2:4], html_color[4:]
|
|
r, g, b = [int(n, 16) for n in (r, g, b)]
|
|
r, g, b = (r / 255.0, g / 255.0, b / 255.0)
|
|
|
|
return (r, g, b)
|
|
|
|
def get_svg(self):
|
|
'''
|
|
Returns HTML formatted color, unless the color is completely
|
|
transparent, in which case returns "none"
|
|
'''
|
|
|
|
if self._a == 0.0:
|
|
return 'none'
|
|
else:
|
|
return self.get_html()
|
|
|
|
|
|
def zoom(units):
|
|
'''
|
|
Returns size of units pixels at current zoom level
|
|
|
|
Args:
|
|
units (int): size of item at full size
|
|
'''
|
|
return int(ZOOM_FACTOR * units)
|
|
|
|
|
|
ZOOM_FACTOR = _compute_zoom_factor() #: scale factor, as float (eg. 0.72, 1.0)
|
|
|
|
DEFAULT_SPACING = zoom(15) #: Spacing is placed in-between elements
|
|
DEFAULT_PADDING = zoom(6) #: Padding is placed around an element
|
|
|
|
#: allow elements to tile neatly within boundaries of a grid
|
|
#: http://wiki.sugarlabs.org/go/Human_Interface_Guidelines#The_Grid_System
|
|
GRID_CELL_SIZE = zoom(75)
|
|
|
|
LINE_WIDTH = zoom(2) #: Thickness of a separator line
|
|
|
|
#: icon that fits within a grid cell
|
|
STANDARD_ICON_SIZE = zoom(55)
|
|
#: small icon, used in palette menu items
|
|
SMALL_ICON_SIZE = zoom(33)
|
|
#: larger than standard
|
|
MEDIUM_ICON_SIZE = zoom(55 * 1.5)
|
|
#: larger than medium, used in journal empty view
|
|
LARGE_ICON_SIZE = zoom(55 * 2.0)
|
|
#: larger than large, used in activity pulsing launcher icon
|
|
XLARGE_ICON_SIZE = zoom(55 * 2.75)
|
|
|
|
if 'org.sugarlabs.font' in Gio.Settings.list_schemas():
|
|
settings = Gio.Settings('org.sugarlabs.font')
|
|
#: User's preferred font size
|
|
FONT_SIZE = settings.get_double('default-size')
|
|
#: User's preferred font face
|
|
FONT_FACE = settings.get_string('default-face')
|
|
else:
|
|
#: User's preferred font size
|
|
FONT_SIZE = 10
|
|
#: User's preferred font face
|
|
FONT_FACE = 'Sans Serif'
|
|
|
|
#: Normal font
|
|
FONT_NORMAL = Font('%s %f' % (FONT_FACE, FONT_SIZE))
|
|
#: Bold font
|
|
FONT_BOLD = Font('%s bold %f' % (FONT_FACE, FONT_SIZE))
|
|
#: Height in pixels of normal font
|
|
FONT_NORMAL_H = zoom(24)
|
|
#: Height in pixels of bold font
|
|
FONT_BOLD_H = zoom(24)
|
|
|
|
# old style toolbox design
|
|
TOOLBOX_SEPARATOR_HEIGHT = zoom(9)
|
|
TOOLBOX_HORIZONTAL_PADDING = zoom(75)
|
|
TOOLBOX_TAB_VBORDER = int((zoom(36) - FONT_NORMAL_H - FOCUS_LINE_WIDTH) / 2)
|
|
TOOLBOX_TAB_HBORDER = zoom(15) - FOCUS_LINE_WIDTH - _TAB_CURVATURE
|
|
TOOLBOX_TAB_LABEL_WIDTH = zoom(150 - 15 * 2)
|
|
|
|
COLOR_BLACK = Color('#000000') #: Black
|
|
COLOR_WHITE = Color('#FFFFFF') #: White
|
|
#: Fully transparent color
|
|
COLOR_TRANSPARENT = Color('#FFFFFF', alpha=0.0)
|
|
#: Default background color of a window
|
|
COLOR_PANEL_GREY = Color('#C0C0C0')
|
|
#: Background color of selected entry
|
|
COLOR_SELECTION_GREY = Color('#A6A6A6')
|
|
#: Color of toolbars
|
|
COLOR_TOOLBAR_GREY = Color('#282828')
|
|
#: Color of buttons
|
|
COLOR_BUTTON_GREY = Color('#808080')
|
|
#: Fill colour of an inactive button
|
|
COLOR_INACTIVE_FILL = Color('#9D9FA1')
|
|
#: Stroke colour of an inactive button
|
|
COLOR_INACTIVE_STROKE = Color('#757575')
|
|
#: Background color of entry
|
|
COLOR_TEXT_FIELD_GREY = Color('#E5E5E5')
|
|
#: Color of highlighted text
|
|
COLOR_HIGHLIGHT = Color('#E7E7E7')
|
|
|
|
#: Cursor invoked palettes will be placed this far from the cursor
|
|
PALETTE_CURSOR_DISTANCE = zoom(10)
|
|
|
|
#: Size of arrow displayed under toolbar buttons to represent their status
|
|
TOOLBAR_ARROW_SIZE = zoom(24)
|
|
|
|
#: Max width of text in a palette menu, in chars
|
|
MENU_WIDTH_CHARS = 60
|