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profanity/src/input_win.c
James Booth fe87af0af8 Added another char code for ctrl arrows
2013-01-17 20:00:13 +00:00

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/*
* input_win.c
*
* Copyright (C) 2012, 2013 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/>.
*
*/
#define _XOPEN_SOURCE_EXTENDED
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#ifdef HAVE_NCURSESW_NCURSES_H
#include <ncursesw/ncurses.h>
#elif HAVE_NCURSES_H
#include <ncurses.h>
#endif
#include "common.h"
#include "command.h"
#include "contact_list.h"
#include "history.h"
#include "log.h"
#include "preferences.h"
#include "profanity.h"
#include "theme.h"
#include "ui.h"
#define _inp_win_refresh() prefresh(inp_win, 0, pad_start, rows-1, 0, rows-1, cols-1)
static WINDOW *inp_win;
static int pad_start = 0;
static int rows, cols;
static int _handle_edit(int result, const wint_t ch, char *input, int *size);
static int _printable(const wint_t ch);
static void _clear_input(void);
static void _go_to_end(int display_size);
void
create_input_window(void)
{
#ifdef NCURSES_REENTRANT
set_escdelay(25);
#else
ESCDELAY = 25;
#endif
getmaxyx(stdscr, rows, cols);
inp_win = newpad(1, INP_WIN_MAX);
wbkgd(inp_win, COLOUR_INPUT_TEXT);
keypad(inp_win, TRUE);
wmove(inp_win, 0, 0);
_inp_win_refresh();
}
void
inp_win_resize(const char * const input, const int size)
{
int inp_x;
getmaxyx(stdscr, rows, cols);
inp_x = getcurx(inp_win);
// 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;
}
}
_inp_win_refresh();
}
void
inp_non_block(void)
{
wtimeout(inp_win, 20);
}
void
inp_block(void)
{
wtimeout(inp_win, -1);
}
wint_t
inp_get_char(char *input, int *size)
{
int inp_x = 0;
int i;
wint_t ch;
int display_size = 0;
if (*size != 0) {
display_size = g_utf8_strlen(input, *size);
}
// echo off, and get some more input
noecho();
int result = wget_wch(inp_win, &ch);
gboolean in_command = FALSE;
if ((display_size > 0 && input[0] == '/') ||
(display_size == 0 && ch == '/')) {
in_command = TRUE;
}
if (prefs_get_states()) {
if (result == ERR) {
prof_handle_idle();
}
if (prefs_get_outtype() && (result != ERR) && !in_command
&& _printable(ch)) {
prof_handle_activity();
}
}
// if it wasn't an arrow key etc
if (!_handle_edit(result, ch, input, size)) {
if (_printable(ch) && result != KEY_CODE_YES) {
inp_x = getcurx(inp_win);
// handle insert if not at end of input
if (inp_x < display_size) {
char bytes[MB_CUR_MAX];
size_t utf_len = wcrtomb(bytes, ch, NULL);
char *next_ch = g_utf8_offset_to_pointer(input, inp_x);
char *offset;
for (offset = &input[*size - 1]; offset >= next_ch; offset--) {
*(offset + utf_len) = *offset;
}
for (i = 0; i < utf_len; i++) {
*(next_ch + i) = bytes[i];
}
*size += utf_len;
input[*size] = '\0';
wprintw(inp_win, next_ch);
wmove(inp_win, 0, inp_x + 1);
if (inp_x - pad_start > cols-3) {
pad_start++;
_inp_win_refresh();
}
// otherwise just append
} else {
char bytes[MB_CUR_MAX+1];
size_t utf_len = wcrtomb(bytes, ch, NULL);
// wcrtomb can return (size_t) -1
if (utf_len < MB_CUR_MAX) {
for (i = 0 ; i < utf_len; i++) {
input[(*size)++] = bytes[i];
}
input[*size] = '\0';
bytes[utf_len] = '\0';
wprintw(inp_win, bytes);
display_size++;
// if gone over screen size follow input
int rows, cols;
getmaxyx(stdscr, rows, cols);
if (display_size - pad_start > cols-2) {
pad_start++;
_inp_win_refresh();
}
}
}
cmd_reset_autocomplete();
}
}
echo();
return ch;
}
void
inp_get_password(char *passwd)
{
_clear_input();
_inp_win_refresh();
noecho();
mvwgetnstr(inp_win, 0, 1, passwd, 20);
wmove(inp_win, 0, 0);
echo();
status_bar_clear();
}
void
inp_put_back(void)
{
_inp_win_refresh();
}
void
inp_replace_input(char *input, const char * const new_input, int *size)
{
int display_size;
strcpy(input, new_input);
*size = strlen(input);
display_size = g_utf8_strlen(input, *size);
inp_win_reset();
input[*size] = '\0';
wprintw(inp_win, input);
_go_to_end(display_size);
}
void
inp_win_reset(void)
{
_clear_input();
pad_start = 0;
_inp_win_refresh();
}
static void
_clear_input(void)
{
wclear(inp_win);
wmove(inp_win, 0, 0);
}
/*
* 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(int result, const wint_t ch, char *input, int *size)
{
char *prev = NULL;
char *next = NULL;
int inp_x = 0;
int next_ch;
int display_size = 0;
if (*size != 0) {
display_size = g_utf8_strlen(input, *size);
}
inp_x = getcurx(inp_win);
// CTRL-LEFT
if ((result == KEY_CODE_YES) && (ch == 545 || ch == 540 || ch == 539) && (inp_x > 0)) {
input[*size] = '\0';
gchar *curr_ch = g_utf8_offset_to_pointer(input, inp_x);
curr_ch = g_utf8_find_prev_char(input, curr_ch);
gchar *prev_ch;
gunichar curr_uni;
gunichar prev_uni;
while (curr_ch != NULL) {
curr_uni = g_utf8_get_char(curr_ch);
if (g_unichar_isspace(curr_uni)) {
curr_ch = g_utf8_find_prev_char(input, curr_ch);
} else {
prev_ch = g_utf8_find_prev_char(input, curr_ch);
if (prev_ch == NULL) {
curr_ch = NULL;
break;
} else {
prev_uni = g_utf8_get_char(prev_ch);
if (g_unichar_isspace(prev_uni)) {
break;
} else {
curr_ch = prev_ch;
}
}
}
}
if (curr_ch == NULL) {
inp_x = 0;
wmove(inp_win, 0, inp_x);
} else {
glong offset = g_utf8_pointer_to_offset(input, curr_ch);
inp_x = offset;
wmove(inp_win, 0, inp_x);
}
// 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;
}
_inp_win_refresh();
}
return 1;
// CTRL-RIGHT
} else if ((result == KEY_CODE_YES) && (ch == 560 || ch == 555 || ch == 554) && (inp_x < display_size)) {
input[*size] = '\0';
gchar *curr_ch = g_utf8_offset_to_pointer(input, inp_x);
gchar *next_ch = g_utf8_find_next_char(curr_ch, NULL);
gunichar curr_uni;
gunichar next_uni;
gboolean moved = FALSE;
while (g_utf8_pointer_to_offset(input, next_ch) < display_size) {
curr_uni = g_utf8_get_char(curr_ch);
next_uni = g_utf8_get_char(next_ch);
curr_ch = next_ch;
next_ch = g_utf8_find_next_char(next_ch, NULL);
if (!g_unichar_isspace(curr_uni) && g_unichar_isspace(next_uni) && moved) {
break;
} else {
moved = TRUE;
}
}
if (next_ch == NULL) {
inp_x = display_size;
wmove(inp_win, 0, inp_x);
} else {
glong offset = g_utf8_pointer_to_offset(input, curr_ch);
if (offset == display_size - 1) {
inp_x = offset + 1;
} else {
inp_x = offset;
}
wmove(inp_win, 0, inp_x);
}
// if gone off screen to right, jump right (half a screen worth)
if (inp_x > pad_start + cols) {
pad_start = pad_start + (cols / 2);
_inp_win_refresh();
}
return 1;
// other editing keys
} else {
switch(ch) {
case 27: // ESC
// check for ALT-num
next_ch = wgetch(inp_win);
if (next_ch != ERR) {
switch (next_ch)
{
case '1':
ui_switch_win(0);
break;
case '2':
ui_switch_win(1);
break;
case '3':
ui_switch_win(2);
break;
case '4':
ui_switch_win(3);
break;
case '5':
ui_switch_win(4);
break;
case '6':
ui_switch_win(5);
break;
case '7':
ui_switch_win(6);
break;
case '8':
ui_switch_win(7);
break;
case '9':
ui_switch_win(8);
break;
case '0':
ui_switch_win(9);
break;
default:
break;
}
return 1;
} else {
*size = 0;
inp_win_reset();
return 1;
}
case 127:
case KEY_BACKSPACE:
contact_list_reset_search_attempts();
if (display_size > 0) {
// if at end, delete last char
if (inp_x >= display_size) {
gchar *start = g_utf8_substring(input, 0, inp_x-1);
for (*size = 0; *size < strlen(start); (*size)++) {
input[*size] = start[*size];
}
input[*size] = '\0';
g_free(start);
_clear_input();
wprintw(inp_win, input);
wmove(inp_win, 0, inp_x -1);
// if in middle, delete and shift chars left
} else if (inp_x > 0 && inp_x < display_size) {
gchar *start = g_utf8_substring(input, 0, inp_x - 1);
gchar *end = g_utf8_substring(input, inp_x, *size);
GString *new = g_string_new(start);
g_string_append(new, end);
for (*size = 0; *size < strlen(new->str); (*size)++) {
input[*size] = new->str[*size];
}
input[*size] = '\0';
g_free(start);
g_free(end);
g_string_free(new, FALSE);
_clear_input();
wprintw(inp_win, input);
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;
}
_inp_win_refresh();
}
}
return 1;
case KEY_DC: // DEL
if (inp_x == display_size-1) {
gchar *start = g_utf8_substring(input, 0, inp_x);
for (*size = 0; *size < strlen(start); (*size)++) {
input[*size] = start[*size];
}
input[*size] = '\0';
g_free(start);
_clear_input();
wprintw(inp_win, input);
} else if (inp_x < display_size-1) {
gchar *start = g_utf8_substring(input, 0, inp_x);
gchar *end = g_utf8_substring(input, inp_x+1, *size);
GString *new = g_string_new(start);
g_string_append(new, end);
for (*size = 0; *size < strlen(new->str); (*size)++) {
input[*size] = new->str[*size];
}
input[*size] = '\0';
g_free(start);
g_free(end);
g_string_free(new, FALSE);
_clear_input();
wprintw(inp_win, input);
wmove(inp_win, 0, inp_x);
}
return 1;
case KEY_LEFT:
if (inp_x > 0) {
wmove(inp_win, 0, inp_x-1);
// current position off screen to left
if (inp_x - 1 < pad_start) {
pad_start--;
_inp_win_refresh();
}
}
return 1;
case KEY_RIGHT:
if (inp_x < display_size) {
wmove(inp_win, 0, inp_x+1);
// current position off screen to right
if ((inp_x + 1 - pad_start) >= cols) {
pad_start++;
_inp_win_refresh();
}
}
return 1;
case KEY_UP:
prev = history_previous(input, size);
if (prev) {
inp_replace_input(input, prev, size);
}
return 1;
case KEY_DOWN:
next = history_next(input, size);
if (next) {
inp_replace_input(input, next, size);
}
return 1;
case KEY_HOME:
wmove(inp_win, 0, 0);
pad_start = 0;
_inp_win_refresh();
return 1;
case KEY_END:
_go_to_end(display_size);
return 1;
case 9: // tab
cmd_autocomplete(input, size);
return 1;
default:
return 0;
}
}
}
static void
_go_to_end(int display_size)
{
wmove(inp_win, 0, display_size);
if (display_size > cols-2) {
pad_start = display_size - cols + 1;
_inp_win_refresh();
}
}
static int
_printable(const wint_t ch)
{
char bytes[MB_CUR_MAX+1];
size_t utf_len = wcrtomb(bytes, ch, NULL);
bytes[utf_len] = '\0';
gunichar unichar = g_utf8_get_char(bytes);
return g_unichar_isprint(unichar) && (ch != KEY_MOUSE);
}
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