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/*
Copyright (C) 2003-2006 Andrey Nazarov
This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
//
// field.c
//
#include "shared/shared.h"
#include "common/common.h"
#include "common/field.h"
#include "client/client.h"
#include "client/keys.h"
#include "client/video.h"
#include "refresh/refresh.h"
/*
================
IF_Init
================
*/
void IF_Init(inputField_t *field, size_t visibleChars, size_t maxChars)
{
memset(field, 0, sizeof(*field));
if (maxChars >= sizeof(field->text)) {
maxChars = sizeof(field->text) - 1;
}
if (visibleChars > maxChars) {
visibleChars = maxChars;
}
field->maxChars = maxChars;
field->visibleChars = visibleChars;
}
/*
================
IF_Clear
================
*/
void IF_Clear(inputField_t *field)
{
memset(field->text, 0, sizeof(field->text));
field->cursorPos = 0;
}
/*
================
IF_Replace
================
*/
void IF_Replace(inputField_t *field, const char *text)
{
if (field->maxChars && text) {
size_t len = Q_strlcpy(field->text, text, field->maxChars + 1);
field->cursorPos = len >= field->maxChars ? field->maxChars - 1 : len;
} else {
field->text[0] = 0;
field->cursorPos = 0;
}
}
#if USE_CLIENT
/*
================
IF_KeyEvent
================
*/
qboolean IF_KeyEvent(inputField_t *field, int key)
{
if (!field->maxChars) {
return qfalse;
}
if (field->cursorPos >= field->maxChars) {
Com_Error(ERR_FATAL, "%s: bad cursorPos", __func__);
}
if (key == K_DEL) {
if (field->text[field->cursorPos]) {
memmove(field->text + field->cursorPos,
field->text + field->cursorPos + 1,
sizeof(field->text) - field->cursorPos);
}
return qtrue;
}
if (key == K_BACKSPACE || (key == 'h' && Key_IsDown(K_CTRL))) {
if (field->cursorPos > 0) {
memmove(field->text + field->cursorPos - 1,
field->text + field->cursorPos,
sizeof(field->text) - field->cursorPos);
field->cursorPos--;
}
return qtrue;
}
if (key == 'w' && Key_IsDown(K_CTRL)) {
size_t oldpos = field->cursorPos;
// kill trailing whitespace
while (field->cursorPos > 0 && field->text[field->cursorPos] <= 32) {
field->cursorPos--;
}
// kill this word
while (field->cursorPos > 0 && field->text[field->cursorPos - 1] > 32) {
field->cursorPos--;
}
memmove(field->text + field->cursorPos, field->text + oldpos,
sizeof(field->text) - oldpos);
return qtrue;
}
if (key == 'u' && Key_IsDown(K_CTRL)) {
memmove(field->text, field->text + field->cursorPos,
sizeof(field->text) - field->cursorPos);
field->cursorPos = 0;
return qtrue;
}
if (key == 'k' && Key_IsDown(K_CTRL)) {
field->text[field->cursorPos] = 0;
return qtrue;
}
if (key == 'c' && Key_IsDown(K_CTRL)) {
VID_SetClipboardData(field->text);
return qtrue;
}
if (key == K_LEFTARROW || (key == 'b' && Key_IsDown(K_CTRL))) {
if (field->cursorPos > 0) {
field->cursorPos--;
}
return qtrue;
}
if (key == K_RIGHTARROW || (key == 'f' && Key_IsDown(K_CTRL))) {
if (field->text[field->cursorPos]) {
field->cursorPos++;
}
goto check;
}
if (key == 'b' && Key_IsDown(K_ALT)) {
if (field->cursorPos > 0 && field->text[field->cursorPos - 1] <= 32) {
field->cursorPos--;
}
while (field->cursorPos > 0 && field->text[field->cursorPos] <= 32) {
field->cursorPos--;
}
while (field->cursorPos > 0 && field->text[field->cursorPos - 1] > 32) {
field->cursorPos--;
}
return qtrue;
}
if (key == 'f' && Key_IsDown(K_ALT)) {
while (field->text[field->cursorPos] && field->text[field->cursorPos] <= 32) {
field->cursorPos++;
}
while (field->text[field->cursorPos] > 32) {
field->cursorPos++;
}
goto check;
}
if (key == K_HOME || (key == 'a' && Key_IsDown(K_CTRL))) {
field->cursorPos = 0;
return qtrue;
}
if (key == K_END || (key == 'e' && Key_IsDown(K_CTRL))) {
field->cursorPos = strlen(field->text);
goto check;
}
if (key == K_INS) {
Key_SetOverstrikeMode(Key_GetOverstrikeMode() ^ 1);
return qtrue;
}
return qfalse;
check:
if (field->cursorPos >= field->maxChars) {
field->cursorPos = field->maxChars - 1;
}
return qtrue;
}
/*
================
IF_CharEvent
================
*/
qboolean IF_CharEvent(inputField_t *field, int key)
{
if (!field->maxChars) {
return qfalse;
}
if (field->cursorPos >= field->maxChars) {
Com_Error(ERR_FATAL, "%s: bad cursorPos", __func__);
}
if (key < 32 || key > 127) {
return qfalse; // non printable
}
if (field->cursorPos == field->maxChars - 1) {
// buffer limit was reached, just replace the last character
field->text[field->cursorPos] = key;
return qtrue;
}
if (Key_GetOverstrikeMode()) {
// replace the character at cursor and advance
field->text[field->cursorPos++] = key;
return qtrue;
}
// insert new character at cursor position
memmove(field->text + field->cursorPos + 1,
field->text + field->cursorPos,
sizeof(field->text) - field->cursorPos - 1);
field->text[field->cursorPos++] = key;
return qtrue;
}
/*
================
IF_Draw
The input line scrolls horizontally if typing goes beyond the right edge.
Returns x offset of the rightmost character drawn.
================
*/
int IF_Draw(inputField_t *field, int x, int y, int flags, qhandle_t font)
{
char *text = field->text;
size_t cursorPos = field->cursorPos;
size_t offset = 0;
int ret;
if (!field->maxChars || !field->visibleChars) {
return 0;
}
if (cursorPos >= field->maxChars) {
Com_Error(ERR_FATAL, "%s: bad cursorPos", __func__);
}
// scroll horizontally
if (cursorPos >= field->visibleChars) {
cursorPos = field->visibleChars - 1;
offset = field->cursorPos - cursorPos;
}
// draw text
ret = R_DrawString(x, y, flags, field->visibleChars, text + offset, font);
if (flags & UI_DRAWCURSOR) {
// draw blinking cursor
if ((com_localTime >> 8) & 1) {
int c = Key_GetOverstrikeMode() ? 11 : '_';
R_DrawChar(x + cursorPos * CHAR_WIDTH, y, flags, c, font);
}
}
return ret;
}
#endif
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