experiments

All kinds of coding experiments
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ncnu.c (5067B)

      1 #include <ncurses.h>
      2 
      3 
      4 // modes
      5 #define INSERT 0
      6 #define EDIT 1
      7 // line number offset
      8 #define LN_OFFSET 5
      9 
     10 float step = 0.125;
     11 int curX = 0;
     12 int curY = 0;
     13 int yMax, xMax;
     14 int mode = INSERT;
     15 
     16 /* owwd = owerwrite default */
     17 bool owwd_note = true;
     18 int default_note = 69;  //TODO: add option for displaying frequency, supercollider note etc.
     19 bool owwd_dur = true;
     20 int default_dur = 0.5;
     21 
     22 
     23 // This will later be used to connect the instrument letters to actual names.
     24 char* instlist[] = {"piano", "violin", "testins"};
     25 char* get_instrument(char** instlist, char insnum) { return instlist[insnum - 'A']; }
     26 
     27 //TODO: typedef for note events (containing start_time, duration, note etc)
     28 //TODO: Set minimum and maximum values for some of the numbers.
     29 //TODO: Instead of hard coding the keybindings, make a header file like dwm
     30 //      for starters, and perhaps a runtime config file later
     31 //TODO: Implement a tone buffer that contains all of the existing notes plus the 
     32 //      one about to be placed, so that this can be used to decide the properties
     33 //      of the new note (the buffer will be played when 'p' is pushed).
     34 
     35 int insert_events(){
     36     char inst = 'A';
     37     int note = default_note;
     38     float start_time = 0.5;
     39     float dur = 0.5;
     40     char num;
     41     mvprintw(curY, curX + LN_OFFSET, "%c(%d, %1.3f, %1.3f)", inst, note, start_time, dur);
     42     refresh();
     43     while (1){
     44         num = getch();
     45         switch(num){
     46             /* Changing instrument */
     47             case 'z':
     48                 inst++;
     49                 break;
     50             case 'Z':
     51                 inst--;
     52                 break;
     53             /* Changing note, duration, position */
     54             case 'n':
     55                 note--;
     56                 break;
     57             case 'N':
     58                 note -= 12;
     59                 break;
     60             case 'e':
     61                 note++;
     62                 break;
     63             case 'E':
     64                 note += 12;
     65                 break;
     66             /* Change duration */
     67             case 'h':
     68                 dur -= step;
     69                 break;
     70             case 'i':
     71                 dur += step;
     72                 break;
     73             /* Change position */
     74             case 's':
     75                 start_time -= step;
     76                 break;
     77             case 't':
     78                 start_time += step;
     79                 break;
     80             /* Finishing insert */
     81             case ',':
     82                 printw(", ");
     83                 getyx(stdscr, curY, curX);
     84                 // TODO: a function that appends the new note event to a .txt file, so it matches what's
     85                 //       shown on the display.
     86                 if(owwd_note) default_note = note;
     87                 return INSERT;
     88             case 10:    // this is enter
     89                 curX = 0;
     90                 curY++;
     91                 if(owwd_note) default_note = note;
     92                 return INSERT;
     93             case 27:    // esc
     94                 return EDIT;
     95             default:
     96                 break;
     97         }
     98         mvprintw(curY, curX+LN_OFFSET, "%c(%d, %1.3f, %1.3f)", inst, note, start_time, dur);
     99          mvprintw(yMax - 5, 1, "- New entry-\n       note: %d\n start time: %1.3f\n   duration: %1.3f", note, start_time, dur);
    100         /* mvprintw(yMax - 5, 1, "- New entry-\n instrument: %s\n       note: %d\n start time: %1.3f\n   duration: %1.3f", 
    101                 get_instrument(instlist, inst), note, start_time, dur);
    102         // This includes the name of the instrument     */ 
    103         refresh();
    104     }
    105 }
    106 /* Tonebook is the name of the notepad like text display */
    107 void draw_tonepad(int yLen, int yFirstNum){
    108     // quick and dirty
    109     for(int i = 0; i < yLen; i++){
    110         if(i < 10)
    111             mvprintw(i, 0, "   %d", yFirstNum + i);
    112         else if(i < 100)
    113             mvprintw(i, 0, "  %d", yFirstNum + i);
    114         else if(i < 1000)
    115             mvprintw(i, 0, " %d", yFirstNum + i);
    116         else
    117             mvprintw(i, 0, "%d", yFirstNum + i);
    118     }
    119 }
    120 
    121 int edit_events(){
    122     char num;
    123     while (1){
    124         num = getch();
    125         switch(num){
    126             /* Changing instrument */
    127             case 'z':
    128                 inst++;
    129                 break;
    130             case 'Z':
    131                 inst--;
    132                 break;
    133             /* Changing note, duration, position */
    134             case 'n':
    135                 note--;
    136                 break;
    137             case 'N':
    138                 note -= 12;
    139                 break;
    140             case 'e':
    141                 note++;
    142                 break;
    143             case 'E':
    144                 note += 12;
    145                 break;
    146             /* Change duration */
    147             case 'h':
    148                 dur -= step;
    149                 break;
    150 }
    151 
    152 int main(){
    153     initscr();
    154     noecho();
    155     cbreak();                      
    156 
    157     // max positions
    158     getmaxyx(stdscr, yMax, xMax);
    159     draw_tonepad(yMax - 8, 0);
    160 
    161     // current position
    162     bool running = 1; 
    163     while(running){
    164         while(mode == EDIT)
    165             mode = edit_events();
    166         while(mode == INSERT)
    167             mode = insert_events();
    168         running = 0;
    169     }
    170     endwin();                  
    171 
    172     return 0;
    173 }