ncurses仅在bstate不为零时报告鼠标移动

时间:2019-03-17 06:48:40

标签: c ncurses curses

我正在跟着

中的代码

https://gist.github.com/sylt/93d3f7b77e7f3a881603

在这里,如果是404

#include <curses.h>
#include <stdio.h>

int main()
{
  initscr();
  cbreak();
  noecho();

  // Enables keypad mode. This makes (at least for me) mouse events getting
  // reported as KEY_MOUSE, instead as of random letters.
  keypad(stdscr, TRUE);

  // Don't mask any mouse events
  mousemask(ALL_MOUSE_EVENTS | REPORT_MOUSE_POSITION, NULL);

  printf("\033[?1003h\n"); // Makes the terminal report mouse movement events
  fflush(stdout);

  for (;;) { 
    int c = wgetch(stdscr);

    // Exit the program on new line fed
    if (c == '\n')
      break;

    char buffer[512];
    size_t max_size = sizeof(buffer);
    if (c == ERR) {
      snprintf(buffer, max_size, "Nothing happened.");
    }
    else if (c == KEY_MOUSE) {
      MEVENT event;
      if (getmouse(&event) == OK) {
        snprintf(buffer, max_size, "Mouse at row=%d, column=%d bstate=0x%08lx",
                 event.y, event.x, event.bstate);
      }
      else {
        snprintf(buffer, max_size, "Got bad mouse event.");
      }
    }
    else {
      snprintf(buffer, max_size, "Pressed key %d (%s)", c, keyname(c));      
    }

    move(0, 0);
    insertln();
    addstr(buffer);
    clrtoeol();
    move(0, 0);
  }

  printf("\033[?1003l\n"); // Disable mouse movement events, as l = low

  endwin();

  return 0;
}

当我将其放入文件并进行编译(gcc -o test test.c -lncurses)时,在xterm中,无需按任何按钮即可报告鼠标移动。在gnome-terminal和Konsole中,仅在按下鼠标按钮时才报告运动事件!

我通常会说,这只是执行时的兼容性/标准问题:

printf '\033[?1003h'在gnome-terminal或konsole上,我可以看到报告的所有鼠标移动,而无需按下任何按钮!

那么这是怎么回事?我如何说服gnome-terminal和konsole表现得像xterm?甚至在bash模式下表现得像自己一样?

编辑:其他线索:

如果我滚动鼠标滚轮,此代码似乎可在所有终端上使用。很有可能这就是我最初在xterm中进行测试时发生的情况,因为xterm甚至需要按下按钮或滚动鼠标才能使其正常工作。

因此:我的问题变成了为什么即使在终端以bash模式报告转义序列的情况下,终端仅在对bstate进行某种修改后才报告鼠标移动?

0 个答案:

没有答案