add selector to timetable. --CONTAINS BUGS--

src/timetable.cpp

@@ -3,6 +3,7 @@
 #include "const.h"
 #include "helper_funcs.h"
 #include "net.h"
+#include "types.h"
 #include <cstdint>
 #include <curses.h>
 #include <cwchar>
@@ -10,6 +11,7 @@
 #include <iostream>
 #include <ncurses.h>
 #include <nlohmann/json.hpp>
+#include <panel.h>
 #include <string>
 #include <vector>
 
@@ -204,7 +206,7 @@ void timetable_page() {
     }
     std::cerr << RED "[ERROR]" << RESET " Hour with id " << HourIdLookupTable[i]
               << " not found\n";
-    goto timetable_error_exit;
+    safe_exit(128);
 
   hour_id_found:
 
@@ -241,8 +243,6 @@ void timetable_page() {
       try {
         if (atom->contains("Change") && !atom->at("Change").is_null()) {
 
-          std::clog << "Change: " << atom->at("Change") << "\n";
-
           switch (
               hash_djb2a(atom->at("Change")["ChangeType"].get<std::string>())) {
           case "Canceled"_sh:
@@ -317,8 +317,102 @@ void timetable_page() {
     }
   }
   refresh();
-  getch();
-timetable_error_exit:
+
+  SelectorType selected_cell(0, 0, 0, num_of_columns - 1, 0, num_of_days - 1);
+  std::array<WINDOW *, 4> selector_windows;
+  std::array<PANEL *, 4> selector_panels;
+
+  {
+    const chtype corners[] = {
+        ACS_ULCORNER, /* Upper left corner */
+        ACS_URCORNER, /* Upper right corner */
+        ACS_LLCORNER, /* Lower left corner */
+        ACS_LRCORNER  /* Lower right corner */
+    };
+
+    unsigned short x_offset, y_offset;
+    for (uint8_t i = 0; i < selector_windows.size(); i++) {
+
+      if (!(i % 2 == 0)) {
+        x_offset = cell_width - 1;
+      } else {
+        x_offset = 0;
+      }
+      if (!(i < 2)) {
+        y_offset = cell_height - 1;
+      } else {
+        y_offset = 0;
+      }
+
+      selector_windows[i] =
+          newwin(1, 1, DEFAULT_OFFSET + y_offset, DEFAULT_OFFSET + x_offset);
+      selector_panels[i] = new_panel(selector_windows[i]);
+      wattron(selector_windows[i], COLOR_PAIR(COLOR_RED));
+      mvwaddch(selector_windows[i], 0, 0, corners[i]);
+      wattroff(selector_windows[i], COLOR_PAIR(COLOR_RED));
+    }
+  }
+
+  update_panels();
+  doupdate();
+
+  int ch;
+  while ((ch = getch()) != KEY_F(1)) {
+  run_loop_again:
+    switch (ch) {
+    case KEY_UP:
+    case 'k':
+      selected_cell.y--;
+      break;
+    case KEY_DOWN:
+    case 'j':
+      selected_cell.y++;
+      break;
+    case KEY_LEFT:
+    case 'h':
+      selected_cell.x--;
+      break;
+    case KEY_RIGHT:
+    case 'l':
+      selected_cell.x++;
+      break;
+    }
+    { // print selected indicator
+      chtype top_left_corner =
+          mvwinch(cells[selected_cell.y][selected_cell.x], 0, 0);
+
+      if (!((top_left_corner & A_CHARTEXT) == 32)) {
+        for (uint8_t i = 0; i < selector_panels.size(); i++) {
+          unsigned short x_offset, y_offset;
+          if (!(i % 2 == 0)) {
+            x_offset = cell_width - 1;
+          } else {
+            x_offset = 0;
+          }
+          if (!(i < 2)) {
+            y_offset = cell_height - 1;
+          } else {
+            y_offset = 0;
+          }
+
+          move_panel(selector_panels[i],
+                     DEFAULT_OFFSET + y_offset + selected_cell.y * cell_height,
+                     DEFAULT_OFFSET + x_offset + selected_cell.x * cell_width);
+        }
+        for (uint8_t i = 0; i < num_of_days; i++) {
+          for (uint8_t j = 0; j < num_of_columns; j++) {
+            wrefresh(cells[i][j]);
+          }
+        }
+        update_panels();
+        doupdate();
+
+      } else {
+        // skip if the cell is empty
+        goto run_loop_again;
+      }
+    }
+  }
   delete[] day_windows;
   delete[] lesson_windows;
   endwin();