+++ /dev/null
-/* darwin-input.c -- code to manage the input event queue
- $Id: darwin-input.c,v 1.4 2002/12/13 00:22:51 jharper Exp $ */
-
-/*
- * Copyright (c) 2001-2002 Torrey T. Lyons. All Rights Reserved.
- * Copyright (c) 2002 Apple Computer, Inc. All rights reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Except as contained in this notice, the name(s) of the above copyright
- * holders shall not be used in advertising or otherwise to promote the sale,
- * use or other dealings in this Software without prior written authorization.
- */
-
-#include "darwin.h"
-
-#include "mipointer.h" // mi software cursor
-
-#include <pthread.h>
-
-#define QUEUE_SIZE 256
-
-static struct {
- pthread_mutex_t mutex;
-
- /* DIX looks at these two integer values, when they're equal
- it won't call ProcessInputEvents (). */
- HWEventQueueType head, tail;
-
- xEvent events[QUEUE_SIZE];
-} event_queue;
-
-/* fd[0] = reading, fd[1] = writing */
-static int event_fd[2];
-
-void
-DarwinEnqueueEvent (const xEvent *e)
-{
- int newtail, oldtail;
- int need_write = FALSE;
-
- pthread_mutex_lock (&event_queue.mutex);
-
- oldtail = (event_queue.tail - 1) % QUEUE_SIZE;
-
- if (e->u.u.type == MotionNotify
- && event_queue.tail != event_queue.head
- && event_queue.events[oldtail].u.u.type == MotionNotify)
- {
- /* Two adjacent motion notify events. Coalesce them. */
-
- memcpy (&event_queue.events[oldtail], e, sizeof (xEvent));
- }
- else
- {
- newtail = (event_queue.tail + 1) % QUEUE_SIZE;
-
- if (newtail != event_queue.head)
- {
- memcpy (&event_queue.events[event_queue.tail], e, sizeof (xEvent));
- event_queue.tail = newtail;
- need_write = TRUE;
- }
- }
-
- pthread_mutex_unlock (&event_queue.mutex);
-
- if (need_write)
- write (event_fd[1], &need_write, sizeof (need_write));
-}
-
-Bool
-DarwinDequeueEvent (xEvent *e)
-{
- Bool ret = FALSE;
- int unused;
-
- pthread_mutex_lock (&event_queue.mutex);
-
- if (event_queue.head != event_queue.tail)
- {
- memcpy (e, &event_queue.events[event_queue.head], sizeof (xEvent));
- event_queue.head = (event_queue.head + 1) % QUEUE_SIZE;
- ret = TRUE;
- }
-
- pthread_mutex_unlock (&event_queue.mutex);
-
- if (ret)
- read (event_fd[0], &unused, sizeof (unused));
-
- return ret;
-}
-
-void
-DarwinInputPreInit (void)
-{
- if (pipe (event_fd) != 0)
- {
- perror ("pipe");
- exit (1);
- }
-
- event_queue.head = event_queue.tail = 0;
- pthread_mutex_init (&event_queue.mutex, NULL);
-}
-
-void
-DarwinInputInit (void)
-{
- SetInputCheck (&event_queue.head, &event_queue.tail);
-}
-
-\f
-/*
- =============================================================================
-
- mouse and keyboard callbacks
-
- =============================================================================
-*/
-
-/*
- * DarwinChangePointerControl
- * Set mouse acceleration and thresholding
- * FIXME: We currently ignore the threshold in ctrl->threshold.
- */
-static void DarwinChangePointerControl(DeviceIntPtr device, PtrCtrl *ctrl)
-{
- /* do nothing here */
-}
-
-
-/*
- * DarwinMouseProc
- * Handle the initialization, etc. of a mouse
- */
-
-int DarwinMouseProc(DeviceIntPtr pPointer, int what)
-{
- char map[6];
-
- switch (what) {
-
- case DEVICE_INIT:
- pPointer->public.on = FALSE;
-
- // Set button map.
- map[1] = 1;
- map[2] = 2;
- map[3] = 3;
- map[4] = 4;
- map[5] = 5;
- InitPointerDeviceStruct( (DevicePtr)pPointer,
- map,
- 5, // numbuttons (4 & 5 are scroll wheel)
- miPointerGetMotionEvents,
- DarwinChangePointerControl,
- 0 );
- break;
-
- case DEVICE_ON:
- pPointer->public.on = TRUE;
- AddEnabledDevice(event_fd[0]);
- return Success;
-
- case DEVICE_CLOSE:
- case DEVICE_OFF:
- pPointer->public.on = FALSE;
- RemoveEnabledDevice(event_fd[0]);
- return Success;
- }
-
- return Success;
-}
-
-/*
- * DarwinKeybdProc
- * Callback from X
- */
-int DarwinKeybdProc(DeviceIntPtr pDev, int onoff)
-{
- switch ( onoff ) {
- case DEVICE_INIT:
- DarwinKeyboardInit( pDev );
- break;
- case DEVICE_ON:
- pDev->public.on = TRUE;
- AddEnabledDevice(event_fd[0]);
- break;
- case DEVICE_OFF:
- pDev->public.on = FALSE;
- RemoveEnabledDevice(event_fd[0]);
- break;
- case DEVICE_CLOSE:
- break;
- }
-
- return Success;
-}
projects / synfig.git / blobdiff