Switch to c++

2025-12-07 17:22:12 +00:00
parent 2927df7710
commit 7acf35c8ea
55 changed files with 3506 additions and 304 deletions
--- a/src/input.cc
+++ b/src/input.cc
@@ -0,0 +1,123 @@
+#include "../include/ui.h"
+
+int read_input(char *buf, size_t buflen) {
+  size_t i = 0;
+  int n;
+  n = read(STDIN_FILENO, &buf[i], 1);
+  if (n <= 0)
+    return -1;
+  i++;
+  if (buf[0] == '\x1b') {
+    while (i < buflen - 1) {
+      n = read(STDIN_FILENO, &buf[i], 1);
+      if (n <= 0)
+        break;
+      i++;
+    }
+  }
+  buf[i] = '\0';
+  return i;
+}
+
+void capture_mouse(char *buf, KeyEvent *ret) {
+  uint8_t byte = buf[3];
+  ret->mouse_modifier = (byte >> 3) & 0x03;
+  uint8_t aa = (byte >> 5) & 0x03;
+  uint8_t cc = byte & 0x03;
+  ret->mouse_x = buf[4] - 33;
+  ret->mouse_y = buf[5] - 33;
+  ret->mouse_direction = 4;
+  if (aa == 1 && cc == 3) {
+    ret->mouse_state = RELEASE;
+    ret->mouse_button = NONE_BTN;
+  } else if (aa == 1) {
+    ret->mouse_state = PRESS;
+    ret->mouse_button = cc;
+  } else if (aa == 2) {
+    ret->mouse_state = DRAG;
+    ret->mouse_button = cc;
+  } else if (aa == 3) {
+    ret->mouse_button = SCROLL_BTN;
+    ret->mouse_state = SCROLL;
+    ret->mouse_direction = cc;
+  } else {
+    ret->mouse_state = RELEASE;
+    ret->mouse_button = NONE_BTN;
+  }
+}
+
+KeyEvent read_key_nonblock() {
+  KeyEvent ret;
+  char buf[7];
+  int n = read_input(buf, sizeof(buf));
+  if (n <= 0) {
+    ret.key_type = KEY_NONE;
+    ret.c = '\0';
+    return ret;
+  }
+  if (n == 1) {
+    ret.key_type = KEY_CHAR;
+    ret.c = buf[0];
+  } else if (buf[0] == '\x1b' && buf[1] == '[' && buf[2] == 'M') {
+    ret.key_type = KEY_MOUSE;
+    capture_mouse(buf, &ret);
+  } else {
+    ret.key_type = KEY_SPECIAL;
+    if (buf[0] == '\x1b' && buf[1] == '[') {
+      int using_modifiers = buf[3] == ';';
+      int pos;
+      if (!using_modifiers) {
+        pos = 2;
+        ret.special_modifier = 0;
+      } else {
+        pos = 4;
+        switch (buf[3]) {
+        case '2':
+          ret.special_modifier = SHIFT;
+          break;
+        case '3':
+          ret.special_modifier = ALT;
+          break;
+        case '5':
+          ret.special_modifier = CNTRL;
+          break;
+        case '7':
+          ret.special_modifier = CNTRL_ALT;
+          break;
+        default:
+          ret.special_modifier = 0;
+          break;
+        }
+      }
+      switch (buf[pos]) {
+      case 'A':
+        ret.special_key = KEY_UP;
+        break;
+      case 'B':
+        ret.special_key = KEY_DOWN;
+        break;
+      case 'C':
+        ret.special_key = KEY_RIGHT;
+        break;
+      case 'D':
+        ret.special_key = KEY_LEFT;
+        break;
+      case '3':
+        ret.special_key = KEY_DELETE;
+        break;
+      default:
+        ret.special_key = 99;
+        break;
+      }
+    }
+  }
+  return ret;
+}
+
+KeyEvent read_key() {
+  while (true) {
+    KeyEvent ret = read_key_nonblock();
+    if (ret.key_type != KEY_NONE)
+      return ret;
+  }
+}