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mirror of https://github.com/profanity-im/profanity.git synced 2024-12-04 14:46:46 -05:00
profanity/src/input_win.c
2012-07-09 23:53:23 +01:00

380 lines
10 KiB
C

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