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https://git.code.sf.net/p/quake/quakeforge
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14a5ec7b41
It proved necessary to support broadcasting events to all event handlers, with device add/remove being the first such events.
110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
/*
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in_event.c
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input event handling
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Copyright (C) 2001 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2001/8/9
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program 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.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include <stdlib.h>
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#include "QF/darray.h"
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#include "QF/input/event.h"
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typedef struct {
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ie_handler_t *handler;
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void *data;
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} ie_reghandler_t;
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static struct DARRAY_TYPE (ie_reghandler_t) ie_handlers = { .grow = 8, };
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static unsigned focus;
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int
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IE_Send_Event (const IE_event_t *event)
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{
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if ((1 << event->type) & IE_broadcast_events) {
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for (size_t i = 0; i < ie_handlers.size; i++) {
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ie_reghandler_t *reg = &ie_handlers.a[i];
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if (reg->handler) {
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reg->handler (event, reg->data);
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}
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}
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return 1;
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}
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if (focus < ie_handlers.size && ie_handlers.a[focus].handler) {
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ie_reghandler_t *reg = &ie_handlers.a[focus];
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return reg->handler (event, reg->data);
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}
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return 0;
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}
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int
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IE_Add_Handler (ie_handler_t *event_handler, void *data)
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{
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size_t handle;
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ie_reghandler_t reg = { event_handler, data };
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for (handle = 0; handle < ie_handlers.size; handle++) {
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if (!ie_handlers.a[handle].handler) {
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ie_handlers.a[handle] = reg;
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return handle;
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}
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}
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DARRAY_APPEND (&ie_handlers, reg);
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return handle;
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}
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void
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IE_Remove_Handler (int handle)
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{
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if ((size_t) (ssize_t) handle < ie_handlers.size) {
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ie_handlers.a[handle].handler = 0;
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}
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}
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void
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IE_Set_Focus (int handle)
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{
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unsigned h = handle;
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if (h < ie_handlers.size && ie_handlers.a[handle].handler && focus != h) {
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IE_event_t event;
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event.type = ie_lose_focus;
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IE_Send_Event (&event);
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focus = handle;
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event.type = ie_gain_focus;
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IE_Send_Event (&event);
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}
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}
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