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https://github.com/profanity-im/profanity.git
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TIdey up input win functions
This commit is contained in:
James Booth
parent
ef4c7ce55f
commit
88de44744a
241
input_win.c
241
input_win.c
@ -20,6 +20,22 @@
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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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* size : " 7 "
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* input : " example "
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* inp_x : "012345678"
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* index : " 0123456 " (inp_x - 1)
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*/
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#include <string.h>
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#include <ncurses.h>
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#include "windows.h"
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@ -27,6 +43,10 @@
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static WINDOW *inp_win;
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static int _handle_edit(int ch, char *input, int *size);
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static int _printable(int ch);
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static void _replace_input(char *input, char *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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@ -34,7 +54,7 @@ void create_input_window(void)
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inp_win = newwin(1, cols, rows-1, 0);
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keypad(inp_win, TRUE);
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wattron(inp_win, A_BOLD);
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wattrset(inp_win, A_BOLD);
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wmove(inp_win, 0, 1);
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wrefresh(inp_win);
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}
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@ -57,135 +77,38 @@ void inp_block(void)
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wtimeout(inp_win, -1);
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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
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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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* size : " 7 "
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* input : " example "
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* inp_x : "012345678"
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* index : " 0123456 " (inp_x - 1)
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*/
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void inp_poll_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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// move cursor back to inp_win
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getyx(inp_win, inp_y, inp_x);
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wmove(inp_win, inp_y, inp_x);
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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 delete pressed, go back and delete it
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if (*ch == 127 || *ch == KEY_BACKSPACE) {
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if (*size > 0) {
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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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// 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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for (i = *size; i > inp_x -1; i--)
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input[i] = input[i-1];
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input[inp_x -1] = *ch;
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// if in middle, delete and shift chars left
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} else if (inp_x > 1 && inp_x <= *size) {
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int i;
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for (i = inp_x-1; i < *size; i++)
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input[i-1] = input[i];
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(*size)--;
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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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// 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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}
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}
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// left arrow
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} else if (*ch == KEY_LEFT) {
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getyx(inp_win, inp_y, inp_x);
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if (inp_x > 1) {
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wmove(inp_win, inp_y, inp_x-1);
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}
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// right arrow
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} else if (*ch == KEY_RIGHT) {
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getyx(inp_win, inp_y, inp_x);
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if (inp_x <= *size ) {
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wmove(inp_win, inp_y, inp_x+1);
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}
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// up arrow
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} else if (*ch == KEY_UP) {
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char *prev = history_previous();
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if (prev) {
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strcpy(input, prev);
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*size = strlen(input);
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inp_clear();
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int i;
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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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// down arrow
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} else if (*ch == KEY_DOWN) {
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char *next = history_next();
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if (next) {
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strcpy(input, next);
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*size = strlen(input);
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inp_clear();
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int i;
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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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// else if not error, newline or special key,
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// show it and store it
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} else if (*ch != ERR &&
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*ch != '\n' &&
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*ch != KEY_LEFT &&
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*ch != KEY_RIGHT &&
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*ch != KEY_UP &&
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*ch != KEY_DOWN &&
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*ch != KEY_F(1) &&
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*ch != KEY_F(2) &&
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*ch != KEY_F(3) &&
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*ch != KEY_F(4) &&
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*ch != KEY_F(5) &&
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*ch != KEY_F(6) &&
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*ch != KEY_F(7) &&
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*ch != KEY_F(8) &&
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*ch != KEY_F(9) &&
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*ch != KEY_F(10)) {
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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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int i;
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for (i = *size; i > inp_x -1; i--)
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input[i] = input[i-1];
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input[inp_x -1] = *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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}
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}
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echo();
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@ -205,3 +128,91 @@ void inp_put_back(void)
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{
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wrefresh(inp_win);
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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(int ch, char *input, int *size)
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{
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int i;
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char *prev = NULL;
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char *next = NULL;
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int inp_y = 0;
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int inp_x = 0;
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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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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 > 1 && inp_x <= *size) {
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for (i = inp_x-1; 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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}
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return 1;
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case KEY_LEFT:
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if (inp_x > 1)
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wmove(inp_win, inp_y, inp_x-1);
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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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return 1;
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case KEY_UP:
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prev = history_previous();
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if (prev)
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_replace_input(input, prev, size);
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return 1;
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case KEY_DOWN:
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next = history_next();
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if (next)
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_replace_input(input, next, size);
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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(int ch)
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{
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return (ch != ERR && ch != '\n' &&
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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));
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}
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static void _replace_input(char *input, char *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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