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nuclear@5
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1 #include <stdio.h>
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nuclear@5
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2 #include <stdlib.h>
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nuclear@5
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3 #include <string.h>
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4 #include <stdarg.h>
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nuclear@5
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5 #include <assert.h>
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6 #include <algorithm>
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7 #include "opengl.h"
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8 #include "console.h"
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9
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10 Console::Console()
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11 : prompt("> ")
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12 {
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13 visible = false;
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14 nlines = 16;
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15 ncolumns = 80;
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16 pos_x = pos_y = 0;
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17 anchor = TOP_LEFT;
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18
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19 inpq_front = inpq_back = 0;
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20
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21 max_hist_lines = 64;
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22 max_output_lines = 128;
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23
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24 hist_iter_valid = false;
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25
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26 echo = true;
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27 font = 0;
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28 font_size = 0;
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29
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30 cursor = 0;
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31 input_win = 0;
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32 }
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33
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34 void Console::set_cursor(int x)
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35 {
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36 if(x < 0 || x > (int)input.size()) {
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37 return;
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38 }
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39 cursor = x;
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40
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41 int max_chars = ncolumns - (int)prompt.size() - 1;
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42
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43 if(cursor < input_win) {
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44 input_win = cursor;
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45 } else if(cursor > input_win + max_chars) {
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46 input_win = std::max(cursor - max_chars, 0);
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47 }
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48 }
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49
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50 int Console::get_cursor() const
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51 {
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52 return cursor;
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53 }
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54
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55 void Console::set_font(dtx_font *font, int sz)
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56 {
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57 this->font = font;
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58 font_size = sz;
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59 }
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60
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61 void Console::set_history_size(int hsz)
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62 {
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63 max_hist_lines = hsz;
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64
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65 int drop = hist.size() - hsz;
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66 if(drop > 0) {
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67 auto it = hist.begin();
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68 for(int i=0; i<drop; i++) {
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69 ++it;
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70 }
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71 hist.erase(hist.begin(), it);
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72 }
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73 }
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74
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75 void Console::set_output_buffer_size(int sz)
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76 {
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77 max_output_lines = sz;
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78
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79 int drop = output.size() - sz;
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80 if(drop > 0) {
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81 output.erase(output.begin(), output.begin() + drop);
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82 }
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83 }
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84
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85 void Console::set_command_func(std::function<void (const char*)> func)
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86 {
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87 cmd_handler = func;
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88 }
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89
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90 void Console::set_echo(bool echo)
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91 {
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92 this->echo = echo;
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93 }
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94
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95 bool Console::get_echo() const
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96 {
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97 return echo;
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98 }
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99
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100 void Console::set_visible(bool v)
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101 {
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102 visible = v;
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103 }
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104
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105 bool Console::is_visible() const
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106 {
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107 return visible;
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108 }
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109
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110 void Console::set_size(int lines, int columns)
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111 {
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112 nlines = lines;
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113 ncolumns = columns;
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114 }
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115
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116 int Console::get_size_lines() const
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117 {
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118 return nlines;
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119 }
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120
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121 int Console::get_size_columns() const
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122 {
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123 return ncolumns;
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124 }
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125
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126 void Console::set_position(int x, int y, Anchor anchor)
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127 {
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128 pos_x = x;
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129 pos_y = y;
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130 this->anchor = anchor;
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131 }
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132
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133 bool Console::update()
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134 {
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135 bool must_redraw = false;
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136
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137 while(inpq_front != inpq_back) {
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138 int c = keybuf[inpq_front];
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139 inpq_front = (inpq_front + 1) % INPUTQ_SIZE;
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140
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141 switch(c) {
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142 case '\n':
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143 case '\r':
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144 if(echo) {
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145 puts(input.c_str());
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146 putchar('\n');
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147 }
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148 if(!input.empty() && cmd_handler) {
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149 cmd_handler(input.c_str());
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150 }
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151
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152 hist.push_back(std::move(input)); // move the input string into the history buffer
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153 if((int)hist.size() > max_hist_lines) {
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154 hist.pop_front();
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155 }
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156 hist_iter_valid = false;
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157
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158 set_cursor(0);
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159 must_redraw = true;
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160 break;
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161
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162 case '\t':
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163 // TODO: completion
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164 break;
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165
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166 case '\b':
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167 if(!input.empty()) {
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168 if(cursor == (int)input.size()) {
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169 input.pop_back();
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170 set_cursor(get_cursor() - 1);
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171 must_redraw = true;
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172 } else if(cursor > 0) {
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173 input.erase(cursor - 1, 1);
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174 set_cursor(get_cursor() - 1);
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175 must_redraw = true;
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176 }
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177 }
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178 break;
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179
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180 case KEY_UP:
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181 if(!hist.empty()) {
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182 if(!hist_iter_valid) {
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183 hist_iter = hist.rbegin();
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184 hist_iter_valid = true;
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185 input = *hist_iter;
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186 } else {
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187 if(++hist_iter == hist.rend()) {
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188 --hist_iter;
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189 break;
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190 }
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191 input = *hist_iter;
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192 }
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193 set_cursor(input.size());
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194 }
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195 break;
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196
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197 case KEY_DOWN:
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198 if(!hist.empty()) {
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199 if(!hist_iter_valid) {
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200 hist_iter = hist.rbegin();
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201 hist_iter_valid = true;
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202 }
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203 if(hist_iter != hist.rbegin()) {
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204 input = *--hist_iter;
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205 set_cursor(input.size());
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206 }
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207 }
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208 break;
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209
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210 case KEY_LEFT:
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211 if(cursor > 0) {
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212 set_cursor(get_cursor() - 1);
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213 must_redraw = true;
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214 }
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215 break;
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216
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217 case KEY_RIGHT:
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218 if(cursor < (int)input.size()) {
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219 set_cursor(get_cursor() + 1);
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220 must_redraw = true;
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221 }
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222 break;
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223
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224 case KEY_HOME:
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225 set_cursor(0);
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226 must_redraw = true;
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227 break;
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228
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229 case KEY_END:
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230 set_cursor(input.size());
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231 must_redraw = true;
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232 break;
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233
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234 case KEY_PGUP:
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235 case KEY_PGDOWN:
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236 // TODO scroll output buffer
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237 break;
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238
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239 default:
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240 if(c < 256 && isprint(c)) {
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241 if(cursor == (int)input.size()) {
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242 input.push_back(c);
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243 } else {
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244 input.insert(cursor, 1, c);
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245 }
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246 set_cursor(get_cursor() + 1);
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247 must_redraw = true;
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248 }
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249 }
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250 }
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251 return must_redraw;
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252 }
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253
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254 void Console::draw() const
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255 {
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256 if(!font || !visible) return;
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257 dtx_use_font(font, font_size);
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258
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259 std::string buflines;
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260
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261 int num_lines = std::min(nlines, (int)output.size());
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262 auto it = output.cbegin() + (output.size() - num_lines);
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263
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264 float max_width = dtx_glyph_width('Q') * ncolumns;
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265
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266 while(it != output.cend()) {
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267 const std::string &line = *it++;
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268 buflines += line + std::string("\n");
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269
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270 //max_width = std::max(max_width, dtx_string_width(line.c_str()));
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271 }
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272
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273 // draw the output box
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274 float line_height = dtx_line_height();
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275 float outbox_height = nlines * line_height;
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276 float console_height = outbox_height + line_height * 1.5;
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277
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278 int vp[4];
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279 glGetIntegerv(GL_VIEWPORT, vp);
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280
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281 int px, py;
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282 switch(anchor) {
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283 case TOP_LEFT:
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284 px = pos_x;
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285 py = pos_y;
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286 break;
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287
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288 case BOTTOM_LEFT:
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289 px = pos_x;
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290 py = vp[3] - console_height - pos_y;
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291 break;
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292
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293 case CENTER:
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294 px = (vp[2] - max_width) / 2 + pos_x;
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295 py = (vp[3] - console_height) / 2 + pos_y;
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296 break;
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297 }
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298
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299 glMatrixMode(GL_PROJECTION);
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300 glPushMatrix();
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301 glLoadIdentity();
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302 glOrtho(0, vp[2], 0, vp[3], -1, 1);
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303
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304 glMatrixMode(GL_MODELVIEW);
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305 glPushMatrix();
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306 glLoadIdentity();
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307 glTranslatef(px, vp[3] - py, 0);
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308
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309
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310 glPushAttrib(GL_ENABLE_BIT);
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311 glDisable(GL_DEPTH_TEST);
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312 glDisable(GL_LIGHTING);
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313 glDisable(GL_STENCIL_TEST);
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314 glEnable(GL_BLEND);
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315 glDisable(GL_TEXTURE_2D);
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316 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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317
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318 glEnable(GL_SCISSOR_TEST);
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319 glScissor(vp[0] + px, vp[1] + (vp[3] - py) - console_height, max_width, console_height);
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320
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321 glBegin(GL_QUADS);
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322 glColor4f(0.1, 0.2, 0.5, 0.7);
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323 glVertex2f(0, -outbox_height);
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324 glVertex2f(max_width, -outbox_height);
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325 glVertex2f(max_width, 0);
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326 glVertex2f(0, 0);
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327
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328 glColor4f(0.5, 0.2, 0.1, 0.7);
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329 glVertex2f(0, -console_height);
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330 glVertex2f(max_width, -console_height);
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331 glVertex2f(max_width, -outbox_height);
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332 glVertex2f(0, -outbox_height);
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333 glEnd();
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334
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335 // draw the output text
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336 glPushMatrix();
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337 glTranslatef(0, -line_height, 0);
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338 glColor4f(1, 1, 1, 0.7);
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339 dtx_string(buflines.c_str());
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340 glPopMatrix();
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341
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342 // draw the input line
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343 glTranslatef(0, -outbox_height - line_height, 0);
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344
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345 std::string inpline = prompt + input.substr(input_win);
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346 dtx_string(inpline.c_str());
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347 glDisable(GL_TEXTURE_2D);
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348
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349 float cursor_x = dtx_char_pos(inpline.c_str(), cursor - input_win + prompt.size());
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350 glBegin(GL_QUADS);
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351 glColor4f(1, 1, 1, 0.7);
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352 glVertex2f(cursor_x, -2);
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353 glVertex2f(cursor_x + 2, -2);
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354 glVertex2f(cursor_x + 2, line_height - 2);
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355 glVertex2f(cursor_x, line_height - 2);
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356 glEnd();
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357
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358 glPopAttrib();
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359
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360 glMatrixMode(GL_PROJECTION);
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nuclear@5
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361 glPopMatrix();
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362 glMatrixMode(GL_MODELVIEW);
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nuclear@5
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363 glPopMatrix();
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nuclear@5
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364 }
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nuclear@5
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365
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366 void Console::input_key(int key)
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nuclear@5
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367 {
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368 keybuf[inpq_back] = key;
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369 inpq_back = (inpq_back + 1) % INPUTQ_SIZE;
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370 }
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371
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372 void Console::putchar(char c)
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373 {
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374 if(output.empty()) {
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375 output.push_back(std::string(""));
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376 }
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377
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378 if(c == '\n' || c == '\r') {
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379 output.push_back(std::string(""));
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380 if((int)output.size() > max_output_lines) {
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381 output.erase(output.begin());
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382 }
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383 } else {
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384 output.back().push_back(c);
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385 }
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nuclear@5
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386 }
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387
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nuclear@5
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388 void Console::puts(const char *str)
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nuclear@5
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389 {
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nuclear@5
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390 while(*str) {
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nuclear@5
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391 putchar(*str++);
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nuclear@5
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392 }
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393 }
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394
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nuclear@5
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395 void Console::printf(const char *fmt, ...)
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nuclear@5
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396 {
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nuclear@5
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397 static char buf[1024];
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398 va_list ap;
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399
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400 va_start(ap, fmt);
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401 vsnprintf(buf, sizeof buf, fmt, ap);
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402 va_end(ap);
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403
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nuclear@5
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404 puts(buf);
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nuclear@5
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405 }
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406
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nuclear@5
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407 void Console::debug()
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408 {
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nuclear@5
|
409 fprintf(stderr, "visible: %s\n", visible ? "true" : "false");
|
nuclear@5
|
410 fprintf(stderr, "size: %d lines x %d columns\n", nlines, ncolumns);
|
nuclear@5
|
411 fprintf(stderr, "cursor: %d\n", cursor);
|
nuclear@5
|
412
|
nuclear@5
|
413 int qsize = 0;
|
nuclear@5
|
414 int qidx = inpq_front;
|
nuclear@5
|
415 while(qidx != inpq_back) {
|
nuclear@5
|
416 qsize++;
|
nuclear@5
|
417 qidx = (qidx + 1) % INPUTQ_SIZE;
|
nuclear@5
|
418 }
|
nuclear@5
|
419
|
nuclear@5
|
420 fprintf(stderr, "input queue size: %d\n", qsize);
|
nuclear@5
|
421 fprintf(stderr, "current input line: \"%s\"\n", input.c_str());
|
nuclear@5
|
422 fprintf(stderr, "%d saved inputs in the history (max %d)\n", (int)hist.size(), max_hist_lines);
|
nuclear@5
|
423 auto it = hist.begin();
|
nuclear@5
|
424 int idx = 0;
|
nuclear@5
|
425 while(it != hist.end()) {
|
nuclear@5
|
426 fprintf(stderr, " h(%d): \"%s\"\n", idx++, it++->c_str());
|
nuclear@5
|
427 }
|
nuclear@5
|
428
|
nuclear@5
|
429 fprintf(stderr, "output buffer (lines: %d/%d):\n", (int)output.size(), max_output_lines);
|
nuclear@5
|
430 for(size_t i=0; i<output.size(); i++) {
|
nuclear@5
|
431 fprintf(stderr, "o(%d): \"%s\"\n", (int)i, output[i].c_str());
|
nuclear@5
|
432 }
|
nuclear@5
|
433 }
|