170 lines
5.2 KiB
C++
170 lines
5.2 KiB
C++
/********************************************************
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* ██████╗ ██████╗████████╗██╗
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* ██╔════╝ ██╔════╝╚══██╔══╝██║
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* ██║ ███╗██║ ██║ ██║
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* ██║ ██║██║ ██║ ██║
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* ╚██████╔╝╚██████╗ ██║ ███████╗
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* ╚═════╝ ╚═════╝ ╚═╝ ╚══════╝
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* Geophysical Computational Tools & Library (GCTL)
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*
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* Copyright (c) 2023 Yi Zhang (yizhang-geo@zju.edu.cn)
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*
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* GCTL is distributed under a dual licensing scheme. You can redistribute
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* it and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, either version 2
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* of the License, or (at your option) any later version. You should have
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* received a copy of the GNU Lesser General Public License along with this
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* program. If not, see <http://www.gnu.org/licenses/>.
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*
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* If the terms and conditions of the LGPL v.2. would prevent you from using
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* the GCTL, please consider the option to obtain a commercial license for a
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* fee. These licenses are offered by the GCTL's original author. As a rule,
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* licenses are provided "as-is", unlimited in time for a one time fee. Please
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* send corresponding requests to: yizhang-geo@zju.edu.cn. Please do not forget
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* to include some description of your company and the realm of its activities.
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* Also add information on how to contact you by electronic and paper mail.
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******************************************************/
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#if defined _WINDOWS || __WIN32__
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#include <io.h>
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// Test for file existence
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#define F_OK 0
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#endif
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#include "term_io.h"
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//在终端显示一个简易的GCTL图标
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void gctl::display_logo(std::ostream &sout)
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{
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sout << " ___ ___ _____ __\n";
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sout << " / _ \\ / __\\/__ \\ / /\n";
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sout << " / /_\\// / / /\\// /\n";
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sout << "/ /_\\\\/ /___ / / / /___\n";
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sout << "\\____/\\____/ \\/ \\____/\n";
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sout << "Geophysical Computational Tools & Library\n";
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sout << "Author: Dr. Yi Zhang (yizhang-geo@zju.edu.cn)\n\n";
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return;
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}
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int gctl::terminal_width()
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{
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int width;
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//获取终端窗口的行列数
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#ifdef _WINDOWS
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CONSOLE_SCREEN_BUFFER_INFO csbi;
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GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
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width = csbi.srWindow.Right - csbi.srWindow.Left + 1;
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#else
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struct winsize w;
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ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
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width = w.ws_col;
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#endif
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return width;
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}
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int gctl::terminal_height()
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{
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int height;
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//获取终端窗口的行列数
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#ifdef _WINDOWS
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CONSOLE_SCREEN_BUFFER_INFO csbi;
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GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
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height = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
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#else
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struct winsize w;
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ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
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height = w.ws_row;
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#endif
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return height;
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}
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gctl::cli_viewer::cli_viewer()
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{
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// 初始化ncurses
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initscr();
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cbreak(); // 禁用行缓冲
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noecho(); // 不显示输入字符
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keypad(stdscr, TRUE); // 启用键盘扩展键
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timeout(0); // 设置非阻塞输入
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curs_set(0); // 隐藏光标
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}
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// 析构函数
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gctl::cli_viewer::~cli_viewer()
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{
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// 清理ncurses
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endwin();
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}
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// 设置显示内容
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void gctl::cli_viewer::setData(const std::vector<std::string>& data)
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{
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lines = data;
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return;
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}
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void gctl::cli_viewer::addData(const std::string& l)
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{
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lines.push_back(l);
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return;
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}
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// 显示文件内容并进入查看循环
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void gctl::cli_viewer::display()
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{
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int maxLines = LINES - 1; // 终端的行数（减去提示行）
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int startLine = 0; // 当前显示的起始行
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int startX = 0; // 当前水平滚动的起始位置
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int maxLineLength = 0; // 最长行的长度
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// 计算最长行的长度
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for (const auto& line : lines)
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{
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maxLineLength = std::max(maxLineLength, static_cast<int>(line.length()));
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}
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// 主循环
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while (true)
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{
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werase(stdscr); // 清屏但不闪烁
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// 显示文件内容
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for (int i = startLine; i < startLine + maxLines && i < lines.size(); ++i)
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{
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const std::string& line = lines[i];
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if (startX < line.length())
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{
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mvprintw(i - startLine, 0, "%s", line.substr(startX).c_str());
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}
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}
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// 在最后一行显示提示信息
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mvprintw(LINES - 1, 0, "Use arrow keys or mouse wheel to scroll. Press Q or ESC to exit.");
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int ch = getch(); // 获取按键
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if (ch == KEY_UP)
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{
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startLine = std::max(0, startLine - 1); // 向上滚动
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}
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else if (ch == KEY_DOWN)
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{
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startLine = std::min(startLine + 1, static_cast<int>(lines.size()) - maxLines); // 向下滚动
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}
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else if (ch == KEY_LEFT)
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{
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startX = std::max(0, startX - 1); // 向左滚动
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}
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else if (ch == KEY_RIGHT)
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{
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startX = std::min(startX + 1, maxLineLength - COLS); // 向右滚动
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}
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else if (ch == 'q' || ch == 'Q' || ch == 27)
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{ // 按Q或ESC退出
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break;
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}
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wrefresh(stdscr); // 刷新屏幕
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}
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return;
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} |