1 | /* -*- C++ -*- |
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2 | * |
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3 | * This file is a part of LEMON, a generic C++ optimization library |
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4 | * |
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5 | * Copyright (C) 2003-2006 |
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6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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8 | * |
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9 | * Permission to use, modify and distribute this software is granted |
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10 | * provided that this copyright notice appears in all copies. For |
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11 | * precise terms see the accompanying LICENSE file. |
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12 | * |
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13 | * This software is provided "AS IS" with no warranty of any kind, |
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14 | * express or implied, and with no claim as to its suitability for any |
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15 | * purpose. |
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16 | * |
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17 | */ |
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18 | |
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19 | #ifndef NEWMAPWIN_H |
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20 | #define NEWMAPWIN_H |
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21 | |
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22 | class NewMapWin; |
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23 | |
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24 | #include <all_include.h> |
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25 | #include <nbtab.h> |
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26 | #include <libgnomecanvasmm.h> |
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27 | #include <libgnomecanvasmm/polygon.h> |
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28 | #include <stack> |
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29 | |
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30 | ///Graphical interface for node/edge map creation. |
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31 | |
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32 | ///This class is responsible for creating a window, |
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33 | ///on which the parameters of a new map can be set. |
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34 | class NewMapWin : public Gtk::Dialog |
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35 | { |
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36 | ///The \ref NoteBookTab in which the new map has to be placed. |
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37 | NoteBookTab & mytab; |
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38 | |
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39 | public: |
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40 | |
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41 | ///Struct to be able to evaluate expressions. |
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42 | |
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43 | ///Initial values of map elements can be given |
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44 | ///by numbers or by expressions. From expressions |
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45 | ///we build first a tree according to the priorities |
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46 | ///of operations in the expression. This is the data |
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47 | ///structure |
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48 | ///that can store one tree element. |
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49 | struct tree_node |
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50 | { |
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51 | ///Character stored in this tree element |
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52 | char ch; |
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53 | ///Left child of tree element. |
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54 | tree_node * left_child; |
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55 | ///Right child of tree element. |
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56 | tree_node * right_child; |
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57 | }; |
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58 | |
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59 | ///Constructor of NewMapWin. |
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60 | |
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61 | ///It creates the widgets shown in |
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62 | ///NewMapWin. |
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63 | NewMapWin(const std::string& title, NoteBookTab &, bool itisedge=true, bool edgenode=true); |
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64 | |
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65 | ///Callback function for OK button. It creates the map. |
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66 | |
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67 | ///This function determines whether the input is correct: |
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68 | ///the name of new map must not be already used, the expression |
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69 | ///that gives tha initial values of map elements has to be valid. |
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70 | ///If input is correct it creates and registrates the new map |
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71 | ///to the correct place. (\ref mytab) |
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72 | virtual void on_response(int response_id); |
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73 | |
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74 | ///Close window if Esc key pressed. |
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75 | virtual bool closeIfEscapeIsPressed(GdkEventKey*); |
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76 | |
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77 | ///Function that creates a tree from an appropriately manipulated string. |
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78 | |
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79 | ///Tree is builded according to priorities of operations in expression given by string. |
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80 | ///Priorities are indicated in a vector that contains weights for each operation. |
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81 | ///\param to_tree string to build tree from |
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82 | ///\param weights weights (priorities) |
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83 | ///\param offset this function call is recursive. This parameter tells us, |
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84 | ///with which part of the string do we have to deal with. |
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85 | tree_node * weightedString2Tree(std::string to_tree, std::vector<unsigned int> & weights, int offset); |
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86 | |
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87 | ///Function that creates a string from a tree by postorder reading. |
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88 | |
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89 | ///This is the last step of creating polishform |
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90 | ///from a given expression string. |
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91 | ///\param root the root of the tree to read through |
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92 | std::string postOrder(tree_node * root); |
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93 | |
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94 | ///From the given expression it creates expression given in polish form. |
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95 | |
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96 | ///First it substitutes variables and numbers in the given expression. |
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97 | ///The substitutions will be one character long local variables. |
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98 | ///The substituted-substitution pair is registrated in \ref ch2var. |
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99 | ///After that it gives weights fo each character in substituted expression. |
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100 | ///Weights are calculated according to the priority of operations in expression. |
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101 | ///Then it creates tree (\ref tree_node) from the weighted string. (\ref weightedString2Tree) |
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102 | ///\param to_polish the string to turn into polish_form |
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103 | ///\param itisedge do we have to create an edgemap or a nodemap. |
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104 | ///It is important, because variables are maps and if expression |
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105 | ///citates a map that does not exists the expression is not valid. |
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106 | ///But to determine, whether the map exists we have to know where |
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107 | ///to search for it. And of course for a new edgemap only edgemaps can be serve with values. |
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108 | std::string string2Polishform(std::string to_polish, bool itisedge); |
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109 | |
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110 | ///Returns whether a string can be used as value in an expression. |
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111 | |
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112 | ///The given string has to be either a mapname or a number. If it is a mapname |
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113 | ///we have to know whether it is an edgemap or a nodemap. |
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114 | ///\param variable the string about the function has to determine whether it is usable in expressions |
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115 | ///\param itisedge should the mapname be between edgemaps, or nodemaps |
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116 | bool validVariable(std::string variable, bool itisedge); |
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117 | |
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118 | ///Deletes the whole tree created for translating string to polishform. |
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119 | |
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120 | ///\param root |
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121 | ///root of the tree |
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122 | void deleteTree(tree_node * root); |
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123 | |
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124 | ///Dictionary of substitutions in expression. |
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125 | |
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126 | ///Variables and numbers are substituted with one character long variables in expressions. |
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127 | ///This is the dictionary. |
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128 | std::map<char, std::string> ch2var; |
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129 | |
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130 | ///Entry which gives us the name of new map. |
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131 | Gtk::Entry name; |
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132 | |
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133 | ///Entry which gives us the initial values of elements of new map. |
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134 | |
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135 | ///Initial value can be a number or an expression after that the |
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136 | ///initial value for each map element can be calculated. |
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137 | Gtk::Entry default_value; |
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138 | |
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139 | ///GTK Designing object. |
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140 | Gtk::Table * table; |
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141 | |
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142 | ///Information holder in window. |
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143 | Gtk::Label * label; |
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144 | |
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145 | ///If selected, nodemap will be created. |
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146 | Gtk::RadioButton node; |
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147 | |
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148 | ///If selected, edgemap will be created. |
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149 | Gtk::RadioButton edge; |
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150 | }; |
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151 | |
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152 | #endif //NEWMAPWIN_H |
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