mirror of
https://github.com/profanity-im/profanity.git
synced 2024-11-03 19:37:16 -05:00
380 lines
10 KiB
C
380 lines
10 KiB
C
/*
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* input_win.c
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*
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* Copyright (C) 2012 James Booth <boothj5@gmail.com>
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*
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* This file is part of Profanity.
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*
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* Profanity is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Profanity is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Profanity. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/*
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* Non blocking input char handling
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*
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* *size - holds the current size of input
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* *input - holds the current input string, NOT null terminated at this point
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* *ch - getch will put a charater here if there was any input
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*
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* The example below shows the values of size, input, a call to wgetyx to
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* find the current cursor location, and the index of the input string.
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*
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* view : |mple|
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* input : "example te"
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* index : "0123456789"
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* inp_x : "0123456789"
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* size : 10
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* pad_start : 3
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* cols : 4
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*/
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#include <string.h>
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#include <stdlib.h>
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#include <ncurses.h>
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#include "ui.h"
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#include "history.h"
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#include "preferences.h"
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#include "util.h"
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#include "command.h"
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static WINDOW *inp_win;
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static int pad_start = 0;
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static int _handle_edit(const int ch, char *input, int *size);
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static int _printable(const int ch);
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static void _replace_input(char *input, const char * const new_input, int *size);
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void create_input_window(void)
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{
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int rows, cols;
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getmaxyx(stdscr, rows, cols);
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inp_win = newpad(1, INP_WIN_MAX);
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wbkgd(inp_win, COLOR_PAIR(1));
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keypad(inp_win, TRUE);
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wmove(inp_win, 0, 0);
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prefresh(inp_win, 0, pad_start, rows-1, 0, rows-1, cols-1);
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}
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void inp_win_resize(const char * const input, const int size)
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{
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int rows, cols, inp_x, inp_y;
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getmaxyx(stdscr, rows, cols);
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getyx(inp_win, inp_y, inp_x);
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// if lost cursor off screen, move contents to show it
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if (inp_x >= pad_start + cols) {
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pad_start = inp_x - (cols / 2);
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if (pad_start < 0) {
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pad_start = 0;
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}
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}
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prefresh(inp_win, pad_start, 0, rows-1, 0, rows-1, cols-1);
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}
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void inp_clear(void)
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{
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int rows, cols;
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getmaxyx(stdscr, rows, cols);
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wclear(inp_win);
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wmove(inp_win, 0, 0);
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pad_start = 0;
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prefresh(inp_win, 0, pad_start, rows-1, 0, rows-1, cols-1);
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}
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void inp_non_block(void)
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{
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wtimeout(inp_win, 500);
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}
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void inp_block(void)
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{
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wtimeout(inp_win, -1);
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}
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void inp_get_char(int *ch, char *input, int *size)
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{
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int inp_y = 0;
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int inp_x = 0;
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int i;
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// echo off, and get some more input
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noecho();
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*ch = wgetch(inp_win);
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// if it wasn't an arrow key etc
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if (!_handle_edit(*ch, input, size)) {
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if (_printable(*ch)) {
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getyx(inp_win, inp_y, inp_x);
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// handle insert if not at end of input
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if (inp_x < *size) {
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winsch(inp_win, *ch);
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wmove(inp_win, inp_y, inp_x+1);
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for (i = *size; i > inp_x; i--)
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input[i] = input[i-1];
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input[inp_x] = *ch;
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(*size)++;
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// otherwise just append
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} else {
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waddch(inp_win, *ch);
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input[(*size)++] = *ch;
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// if gone over screen size follow input
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int rows, cols;
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getmaxyx(stdscr, rows, cols);
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if (*size - pad_start > cols-2) {
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pad_start++;
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prefresh(inp_win, 0, pad_start, rows-1, 0, rows-1, cols-1);
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}
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}
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reset_search_attempts();
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reset_login_search();
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reset_command_completer();
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}
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}
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echo();
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}
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void inp_get_password(char *passwd)
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{
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int rows, cols;
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getmaxyx(stdscr, rows, cols);
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wclear(inp_win);
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prefresh(inp_win, 0, pad_start, rows-1, 0, rows-1, cols-1);
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noecho();
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mvwgetnstr(inp_win, 0, 1, passwd, 20);
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wmove(inp_win, 0, 0);
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echo();
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status_bar_clear();
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}
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void inp_put_back(void)
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{
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int rows, cols;
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getmaxyx(stdscr, rows, cols);
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prefresh(inp_win, 0, pad_start, rows-1, 0, rows-1, cols-1);
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}
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/*
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* Deal with command editing, return 1 if ch was an edit
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* key press: up, down, left, right or backspace
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* return 0 if it wasnt
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*/
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static int _handle_edit(const int ch, char *input, int *size)
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{
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int i, rows, cols;
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char *prev = NULL;
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char *next = NULL;
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char *found = NULL;
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char *auto_msg = NULL;
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int inp_y = 0;
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int inp_x = 0;
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char inp_cpy[*size];
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getmaxyx(stdscr, rows, cols);
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getyx(inp_win, inp_y, inp_x);
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switch(ch) {
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case 127:
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case KEY_BACKSPACE:
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reset_search_attempts();
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if (*size > 0) {
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// if at end, delete last char
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if (inp_x >= *size) {
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wmove(inp_win, inp_y, inp_x-1);
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wdelch(inp_win);
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(*size)--;
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// if in middle, delete and shift chars left
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} else if (inp_x > 0 && inp_x < *size) {
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for (i = inp_x; i < *size; i++)
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input[i-1] = input[i];
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(*size)--;
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inp_clear();
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for (i = 0; i < *size; i++)
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waddch(inp_win, input[i]);
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wmove(inp_win, 0, inp_x -1);
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}
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// if gone off screen to left, jump left (half a screen worth)
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if (inp_x <= pad_start) {
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pad_start = pad_start - (cols / 2);
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if (pad_start < 0) {
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pad_start = 0;
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}
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prefresh(inp_win, 0, pad_start, rows-1, 0, rows-1, cols-1);
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}
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}
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return 1;
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case KEY_DC: // DEL
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if (inp_x < *size) {
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wdelch(inp_win);
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// if not last char, shift chars left
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if (inp_x < *size - 1)
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for (i = inp_x; i < *size; i++)
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input[i] = input[i+1];
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(*size)--;
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}
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return 1;
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case KEY_LEFT:
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if (inp_x > 0)
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wmove(inp_win, inp_y, inp_x-1);
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// current position off screen to left
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if (inp_x - 1 < pad_start) {
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pad_start--;
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prefresh(inp_win, 0, pad_start, rows-1, 0, rows-1, cols-1);
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}
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return 1;
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case KEY_RIGHT:
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if (inp_x < *size) {
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wmove(inp_win, inp_y, inp_x+1);
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// current position off screen to right
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if ((inp_x + 1 - pad_start) >= cols) {
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pad_start++;
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prefresh(inp_win, 0, pad_start, rows-1, 0, rows-1, cols-1);
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}
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}
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return 1;
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case KEY_UP:
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prev = history_previous(input, size);
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if (prev) {
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_replace_input(input, prev, size);
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pad_start = 0;
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prefresh(inp_win, 0, pad_start, rows-1, 0, rows-1, cols-1);
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}
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return 1;
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case KEY_DOWN:
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next = history_next(input, size);
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if (next) {
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_replace_input(input, next, size);
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pad_start = 0;
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prefresh(inp_win, 0, pad_start, rows-1, 0, rows-1, cols-1);
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}
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return 1;
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case KEY_HOME:
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wmove(inp_win, inp_y, 0);
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pad_start = 0;
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prefresh(inp_win, 0, pad_start, rows-1, 0, rows-1, cols-1);
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return 1;
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case KEY_END:
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wmove(inp_win, inp_y, *size);
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if (*size > cols-2) {
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pad_start = *size - cols + 1;
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prefresh(inp_win, 0, pad_start, rows-1, 0, rows-1, cols-1);
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}
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return 1;
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case 9: // tab
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// autocomplete commands
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if ((strncmp(input, "/", 1) == 0) && (!str_contains(input, *size, ' '))) {
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for(i = 0; i < *size; i++) {
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inp_cpy[i] = input[i];
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}
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inp_cpy[i] = '\0';
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found = cmd_complete(inp_cpy);
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if (found != NULL) {
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auto_msg = (char *) malloc((strlen(found) + 1) * sizeof(char));
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strcpy(auto_msg, found);
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_replace_input(input, auto_msg, size);
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free(auto_msg);
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free(found);
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}
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// autcomplete /msg recipient
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} else if ((strncmp(input, "/msg ", 5) == 0) && (*size > 5)) {
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for(i = 5; i < *size; i++) {
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inp_cpy[i-5] = input[i];
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}
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inp_cpy[(*size) - 5] = '\0';
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found = find_contact(inp_cpy);
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if (found != NULL) {
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auto_msg = (char *) malloc((5 + (strlen(found) + 1)) * sizeof(char));
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strcpy(auto_msg, "/msg ");
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strcat(auto_msg, found);
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_replace_input(input, auto_msg, size);
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free(auto_msg);
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free(found);
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}
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// autocomplete /connect username
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} else if ((strncmp(input, "/connect ", 9) == 0) && (*size > 9)) {
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for(i = 9; i < *size; i++) {
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inp_cpy[i-9] = input[i];
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}
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inp_cpy[(*size) - 9] = '\0';
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found = find_login(inp_cpy);
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if (found != NULL) {
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auto_msg = (char *) malloc((9 + (strlen(found) + 1)) * sizeof(char));
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strcpy(auto_msg, "/connect ");
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strcat(auto_msg, found);
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_replace_input(input, auto_msg, size);
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free(auto_msg);
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free(found);
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}
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}
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return 1;
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default:
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return 0;
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}
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}
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static int _printable(const int ch)
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{
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return (ch != ERR && ch != '\n' &&
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ch != KEY_PPAGE && ch != KEY_NPAGE &&
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ch != KEY_F(1) && ch != KEY_F(2) && ch != KEY_F(3) &&
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ch != KEY_F(4) && ch != KEY_F(5) && ch != KEY_F(6) &&
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ch != KEY_F(7) && ch != KEY_F(8) && ch != KEY_F(9) &&
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ch != KEY_F(10) && ch!= KEY_F(11) && ch != KEY_F(12) &&
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ch != KEY_IC && ch != KEY_EIC && ch != KEY_RESIZE);
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}
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static void _replace_input(char *input, const char * const new_input, int *size)
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{
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int i;
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strcpy(input, new_input);
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*size = strlen(input);
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inp_clear();
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for (i = 0; i < *size; i++)
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waddch(inp_win, input[i]);
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}
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