src/gui/StyleSpec.h

   1 /*
   2 Minetest
   3 Copyright (C) 2019 rubenwardy
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "irrlichttypes_extrabloated.h"
  21 #include <array>
  22
  23 #pragma once
  24
  25 class StyleSpec
  26 {
  27 public:
  28         enum Property
  29         {
  30                 TEXTCOLOR,
  31                 BGCOLOR,
  32                 NOCLIP,
  33                 BORDER,
  34                 BGIMG,
  35                 BGIMG_PRESSED,
  36                 ALPHA,
  37                 NUM_PROPERTIES,
  38                 NONE
  39         };
  40
  41 private:
  42         std::array<bool, NUM_PROPERTIES> property_set;
  43         std::array<std::string, NUM_PROPERTIES> properties;
  44
  45 public:
  46         static Property GetPropertyByName(const std::string &name)
  47         {
  48                 if (name == "textcolor") {
  49                         return TEXTCOLOR;
  50                 } else if (name == "bgcolor") {
  51                         return BGCOLOR;
  52                 } else if (name == "noclip") {
  53                         return NOCLIP;
  54                 } else if (name == "border") {
  55                         return BORDER;
  56                 } else if (name == "bgimg") {
  57                         return BGIMG;
  58                 } else if (name == "bgimg_pressed") {
  59                         return BGIMG_PRESSED;
  60                 } else if (name == "alpha") {
  61                         return ALPHA;
  62                 } else {
  63                         return NONE;
  64                 }
  65         }
  66
  67         std::string get(Property prop, std::string def) const
  68         {
  69                 const auto &val = properties[prop];
  70                 return val.empty() ? def : val;
  71         }
  72
  73         void set(Property prop, const std::string &value)
  74         {
  75                 properties[prop] = value;
  76                 property_set[prop] = true;
  77         }
  78
  79         video::SColor getColor(Property prop, video::SColor def) const
  80         {
  81                 const auto &val = properties[prop];
  82                 if (val.empty()) {
  83                         return def;
  84                 }
  85
  86                 parseColorString(val, def, false, 0xFF);
  87                 return def;
  88         }
  89
  90         video::SColor getColor(Property prop) const
  91         {
  92                 const auto &val = properties[prop];
  93                 FATAL_ERROR_IF(val.empty(), "Unexpected missing property");
  94
  95                 video::SColor color;
  96                 parseColorString(val, color, false, 0xFF);
  97                 return color;
  98         }
  99
 100         bool getBool(Property prop, bool def) const
 101         {
 102                 const auto &val = properties[prop];
 103                 if (val.empty()) {
 104                         return def;
 105                 }
 106
 107                 return is_yes(val);
 108         }
 109
 110         inline bool isNotDefault(Property prop) const
 111         {
 112                 return !properties[prop].empty();
 113         }
 114
 115         inline bool hasProperty(Property prop) const { return property_set[prop]; }
 116
 117         StyleSpec &operator|=(const StyleSpec &other)
 118         {
 119                 for (size_t i = 0; i < NUM_PROPERTIES; i++) {
 120                         auto prop = (Property)i;
 121                         if (other.hasProperty(prop)) {
 122                                 set(prop, other.get(prop, ""));
 123                         }
 124                 }
 125
 126                 return *this;
 127         }
 128
 129         StyleSpec operator|(const StyleSpec &other) const
 130         {
 131                 StyleSpec newspec = *this;
 132                 newspec |= other;
 133                 return newspec;
 134         }
 135 };