| # Copyright 2019 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| from base_generator import Color, Modes, BaseGenerator |
| |
| |
| class CSSStyleGenerator(BaseGenerator): |
| '''Generator for CSS Variables''' |
| |
| def Render(self): |
| self.Validate() |
| return self.ApplyTemplate(self, 'css_generator.tmpl', |
| self.GetParameters()) |
| |
| def GetParameters(self): |
| return { |
| 'light_variables': self._mode_variables[Modes.LIGHT], |
| 'dark_variables': self._mode_variables[Modes.DARK], |
| } |
| |
| def GetFilters(self): |
| return { |
| 'to_var_name': self._ToVarName, |
| 'css_color': self._CssColor, |
| 'css_color_rgb': self._CssColorRGB, |
| } |
| |
| def GetGlobals(self): |
| return { |
| 'css_color_from_rgb_var': self._CssColorFromRGBVar, |
| } |
| |
| def _ToVarName(self, var_name): |
| return '--%s' % var_name.replace('_', '-') |
| |
| def _CssColor(self, c): |
| '''Returns the CSS color representation of |c|''' |
| assert (isinstance(c, Color)) |
| if c.var: |
| return 'var(%s)' % self._ToVarName(c.var) |
| |
| if c.rgb_var: |
| if c.a != 1: |
| return 'rgba(var(%s), %g)' % (self._ToVarName(c.rgb_var), c.a) |
| else: |
| return 'rgb(var(%s))' % self._ToVarName(c.rgb_var) |
| |
| if c.a != 1: |
| return 'rgba(%d, %d, %d, %g)' % (c.r, c.g, c.b, c.a) |
| else: |
| return 'rgb(%d, %d, %d)' % (c.r, c.g, c.b) |
| |
| def _CssColorRGB(self, c): |
| '''Returns the CSS rgb representation of |c|''' |
| if c.var: |
| return 'var(%s-rgb)' % self._ToVarName(c.var) |
| |
| if c.rgb_var: |
| return 'var(%s)' % self._ToVarName(c.rgb_var) |
| |
| return '%d, %d, %d' % (c.r, c.g, c.b) |
| |
| def _CssColorFromRGBVar(self, name, alpha): |
| '''Returns the CSS color representation given a color name and alpha''' |
| if alpha != 1: |
| return 'rgba(var(%s-rgb), %g)' % (self._ToVarName(name), alpha) |
| else: |
| return 'rgb(var(%s-rgb))' % self._ToVarName(name) |
