481 lines
16 KiB
C
481 lines
16 KiB
C
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/*
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* Darwin event queue and event handling
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*/
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/*
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Copyright (c) 2002-2004 Torrey T. Lyons. All Rights Reserved.
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Copyright 2004 Kaleb S. KEITHLEY. All Rights Reserved.
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This file is based on mieq.c by Keith Packard,
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which contains the following copyright:
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Copyright 1990, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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*/
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#define NEED_EVENTS
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#include <X11/X.h>
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#include <X11/Xmd.h>
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#include <X11/Xproto.h>
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#include "misc.h"
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#include "windowstr.h"
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#include "pixmapstr.h"
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#include "inputstr.h"
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#include "mi.h"
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#include "scrnintstr.h"
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#include "mipointer.h"
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#include "darwin.h"
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#include "darwinKeyboard.h"
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <unistd.h>
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#include <IOKit/hidsystem/IOLLEvent.h>
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/* Fake button press/release for scroll wheel move. */
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#define SCROLLWHEELUPFAKE 4
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#define SCROLLWHEELDOWNFAKE 5
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#define QUEUE_SIZE 256
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typedef struct _Event {
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xEvent event;
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ScreenPtr pScreen;
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} EventRec, *EventPtr;
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typedef struct _EventQueue {
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HWEventQueueType head, tail; /* long for SetInputCheck */
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CARD32 lastEventTime; /* to avoid time running backwards */
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Bool lastMotion;
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EventRec events[QUEUE_SIZE]; /* static allocation for signals */
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DevicePtr pKbd, pPtr; /* device pointer, to get funcs */
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ScreenPtr pEnqueueScreen; /* screen events are being delivered to */
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ScreenPtr pDequeueScreen; /* screen events are being dispatched to */
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} EventQueueRec, *EventQueuePtr;
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static EventQueueRec darwinEventQueue;
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/*
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* DarwinPressModifierMask
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* Press or release the given modifier key, specified by its mask.
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*/
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static void DarwinPressModifierMask(
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xEvent *xe, // must already have type, time and mouse location
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int mask) // one of NX_*MASK constants
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{
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int key = DarwinModifierNXMaskToNXKey(mask);
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if (key != -1) {
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int keycode = DarwinModifierNXKeyToNXKeycode(key, 0);
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if (keycode != 0) {
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xe->u.u.detail = keycode + MIN_KEYCODE;
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(*darwinEventQueue.pKbd->processInputProc)(xe,
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(DeviceIntPtr)darwinEventQueue.pKbd, 1);
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}
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}
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}
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#ifdef NX_DEVICELCTLKEYMASK
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#define CONTROL_MASK(flags) (flags & (NX_DEVICELCTLKEYMASK|NX_DEVICERCTLKEYMASK))
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#else
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#define CONTROL_MASK(flags) (NX_CONTROLMASK)
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#endif /* NX_DEVICELCTLKEYMASK */
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#ifdef NX_DEVICELSHIFTKEYMASK
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#define SHIFT_MASK(flags) (flags & (NX_DEVICELSHIFTKEYMASK|NX_DEVICERSHIFTKEYMASK))
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#else
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#define SHIFT_MASK(flags) (NX_SHIFTMASK)
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#endif /* NX_DEVICELSHIFTKEYMASK */
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#ifdef NX_DEVICELCMDKEYMASK
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#define COMMAND_MASK(flags) (flags & (NX_DEVICELCMDKEYMASK|NX_DEVICERCMDKEYMASK))
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#else
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#define COMMAND_MASK(flags) (NX_COMMANDMASK)
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#endif /* NX_DEVICELCMDKEYMASK */
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#ifdef NX_DEVICELALTKEYMASK
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#define ALTERNATE_MASK(flags) (flags & (NX_DEVICELALTKEYMASK|NX_DEVICERALTKEYMASK))
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#else
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#define ALTERNATE_MASK(flags) (NX_ALTERNATEMASK)
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#endif /* NX_DEVICELALTKEYMASK */
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/*
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* DarwinUpdateModifiers
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* Send events to update the modifier state.
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*/
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static void DarwinUpdateModifiers(
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xEvent *xe, // event template with time and mouse position set
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int pressed, // KeyPress or KeyRelease
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int flags ) // modifier flags that have changed
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{
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xe->u.u.type = pressed;
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if (flags & NX_ALPHASHIFTMASK) {
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DarwinPressModifierMask(xe, NX_ALPHASHIFTMASK);
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}
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if (flags & NX_COMMANDMASK) {
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DarwinPressModifierMask(xe, COMMAND_MASK(flags));
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}
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if (flags & NX_CONTROLMASK) {
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DarwinPressModifierMask(xe, CONTROL_MASK(flags));
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}
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if (flags & NX_ALTERNATEMASK) {
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DarwinPressModifierMask(xe, ALTERNATE_MASK(flags));
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}
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if (flags & NX_SHIFTMASK) {
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DarwinPressModifierMask(xe, SHIFT_MASK(flags));
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}
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if (flags & NX_SECONDARYFNMASK) {
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DarwinPressModifierMask(xe, NX_SECONDARYFNMASK);
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}
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}
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/*
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* DarwinSimulateMouseClick
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* Send a mouse click to X when multiple mouse buttons are simulated
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* with modifier-clicks, such as command-click for button 2. The dix
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* layer is told that the previously pressed modifier key(s) are
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* released, the simulated click event is sent. After the mouse button
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* is released, the modifier keys are reverted to their actual state,
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* which may or may not be pressed at that point. This is usually
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* closest to what the user wants. Ie. the user typically wants to
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* simulate a button 2 press instead of Command-button 2.
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*/
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static void DarwinSimulateMouseClick(
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xEvent *xe, // event template with time and
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// mouse position filled in
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int whichButton, // mouse button to be pressed
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int modifierMask) // modifiers used for the fake click
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{
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// first fool X into forgetting about the keys
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DarwinUpdateModifiers(xe, KeyRelease, modifierMask);
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// push the mouse button
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xe->u.u.type = ButtonPress;
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xe->u.u.detail = whichButton;
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(*darwinEventQueue.pPtr->processInputProc)
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(xe, (DeviceIntPtr)darwinEventQueue.pPtr, 1);
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}
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Bool
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DarwinEQInit(
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DevicePtr pKbd,
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DevicePtr pPtr)
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{
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darwinEventQueue.head = darwinEventQueue.tail = 0;
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darwinEventQueue.lastEventTime = GetTimeInMillis ();
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darwinEventQueue.pKbd = pKbd;
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darwinEventQueue.pPtr = pPtr;
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darwinEventQueue.pEnqueueScreen = screenInfo.screens[0];
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darwinEventQueue.pDequeueScreen = darwinEventQueue.pEnqueueScreen;
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SetInputCheck (&darwinEventQueue.head, &darwinEventQueue.tail);
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return TRUE;
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}
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/*
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* DarwinEQEnqueue
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* Must be thread safe with ProcessInputEvents.
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* DarwinEQEnqueue - called from event gathering thread
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* ProcessInputEvents - called from X server thread
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* DarwinEQEnqueue should never be called from more than one thread.
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*/
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void
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DarwinEQEnqueue(
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const xEvent *e)
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{
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HWEventQueueType oldtail, newtail;
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char byte = 0;
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oldtail = darwinEventQueue.tail;
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// mieqEnqueue() collapses successive motion events into one event.
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// This is difficult to do in a thread-safe way and rarely useful.
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newtail = oldtail + 1;
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if (newtail == QUEUE_SIZE)
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newtail = 0;
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/* Toss events which come in late */
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if (newtail == darwinEventQueue.head)
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return;
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darwinEventQueue.events[oldtail].event = *e;
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/*
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* Make sure that event times don't go backwards - this
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* is "unnecessary", but very useful
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*/
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if (e->u.keyButtonPointer.time < darwinEventQueue.lastEventTime &&
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darwinEventQueue.lastEventTime - e->u.keyButtonPointer.time < 10000)
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{
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darwinEventQueue.events[oldtail].event.u.keyButtonPointer.time =
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darwinEventQueue.lastEventTime;
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}
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darwinEventQueue.events[oldtail].pScreen = darwinEventQueue.pEnqueueScreen;
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// Update the tail after the event is prepared
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darwinEventQueue.tail = newtail;
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// Signal there is an event ready to handle
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write(darwinEventWriteFD, &byte, 1);
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}
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/*
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* DarwinEQPointerPost
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* Post a pointer event. Used by the mipointer.c routines.
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*/
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void
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DarwinEQPointerPost(
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xEvent *e)
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{
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(*darwinEventQueue.pPtr->processInputProc)
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(e, (DeviceIntPtr)darwinEventQueue.pPtr, 1);
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}
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void
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DarwinEQSwitchScreen(
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ScreenPtr pScreen,
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Bool fromDIX)
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{
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darwinEventQueue.pEnqueueScreen = pScreen;
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if (fromDIX)
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darwinEventQueue.pDequeueScreen = pScreen;
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}
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/*
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* ProcessInputEvents
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* Read and process events from the event queue until it is empty.
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*/
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void ProcessInputEvents(void)
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{
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EventRec *e;
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int x, y;
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xEvent xe;
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static int old_flags = 0; // last known modifier state
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// button number and modifier mask of currently pressed fake button
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static int darwinFakeMouseButtonDown = 0;
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static int darwinFakeMouseButtonMask = 0;
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// Empty the signaling pipe
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x = sizeof(xe);
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while (x == sizeof(xe)) {
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x = read(darwinEventReadFD, &xe, sizeof(xe));
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}
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while (darwinEventQueue.head != darwinEventQueue.tail)
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{
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if (screenIsSaved == SCREEN_SAVER_ON)
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SaveScreens (SCREEN_SAVER_OFF, ScreenSaverReset);
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e = &darwinEventQueue.events[darwinEventQueue.head];
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xe = e->event;
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// Shift from global screen coordinates to coordinates relative to
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// the origin of the current screen.
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xe.u.keyButtonPointer.rootX -= darwinMainScreenX +
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dixScreenOrigins[miPointerCurrentScreen()->myNum].x;
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xe.u.keyButtonPointer.rootY -= darwinMainScreenY +
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dixScreenOrigins[miPointerCurrentScreen()->myNum].y;
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/*
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* Assumption - screen switching can only occur on motion events
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*/
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if (e->pScreen != darwinEventQueue.pDequeueScreen)
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{
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darwinEventQueue.pDequeueScreen = e->pScreen;
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x = xe.u.keyButtonPointer.rootX;
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y = xe.u.keyButtonPointer.rootY;
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if (darwinEventQueue.head == QUEUE_SIZE - 1)
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darwinEventQueue.head = 0;
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else
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++darwinEventQueue.head;
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NewCurrentScreen (darwinEventQueue.pDequeueScreen, x, y);
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}
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else
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{
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if (darwinEventQueue.head == QUEUE_SIZE - 1)
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darwinEventQueue.head = 0;
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else
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++darwinEventQueue.head;
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switch (xe.u.u.type)
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{
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case KeyPress:
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if (old_flags == 0
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&& darwinSyncKeymap && darwinKeymapFile == NULL)
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{
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/* See if keymap has changed. */
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static unsigned int last_seed;
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unsigned int this_seed;
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this_seed = DarwinModeSystemKeymapSeed();
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if (this_seed != last_seed)
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{
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last_seed = this_seed;
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DarwinKeyboardReload(darwinKeyboard);
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}
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}
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/* fall through */
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case KeyRelease:
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xe.u.u.detail += MIN_KEYCODE;
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(*darwinEventQueue.pKbd->processInputProc)
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(&xe, (DeviceIntPtr)darwinEventQueue.pKbd, 1);
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break;
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case ButtonPress:
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miPointerAbsoluteCursor(xe.u.keyButtonPointer.rootX,
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xe.u.keyButtonPointer.rootY,
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xe.u.keyButtonPointer.time);
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if (darwinFakeButtons && xe.u.u.detail == 1) {
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// Mimic multi-button mouse with modifier-clicks
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// If both sets of modifiers are pressed,
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// button 2 is clicked.
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if ((old_flags & darwinFakeMouse2Mask) ==
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darwinFakeMouse2Mask)
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{
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DarwinSimulateMouseClick(&xe, 2, darwinFakeMouse2Mask);
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darwinFakeMouseButtonDown = 2;
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darwinFakeMouseButtonMask = darwinFakeMouse2Mask;
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break;
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}
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else if ((old_flags & darwinFakeMouse3Mask) ==
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darwinFakeMouse3Mask)
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{
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DarwinSimulateMouseClick(&xe, 3, darwinFakeMouse3Mask);
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darwinFakeMouseButtonDown = 3;
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darwinFakeMouseButtonMask = darwinFakeMouse3Mask;
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break;
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}
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}
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(*darwinEventQueue.pPtr->processInputProc)
|
||
|
|
(&xe, (DeviceIntPtr)darwinEventQueue.pPtr, 1);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ButtonRelease:
|
||
|
|
miPointerAbsoluteCursor(xe.u.keyButtonPointer.rootX,
|
||
|
|
xe.u.keyButtonPointer.rootY,
|
||
|
|
xe.u.keyButtonPointer.time);
|
||
|
|
if (darwinFakeButtons && xe.u.u.detail == 1 &&
|
||
|
|
darwinFakeMouseButtonDown)
|
||
|
|
{
|
||
|
|
// If last mousedown was a fake click, don't check for
|
||
|
|
// mouse modifiers here. The user may have released the
|
||
|
|
// modifiers before the mouse button.
|
||
|
|
xe.u.u.detail = darwinFakeMouseButtonDown;
|
||
|
|
darwinFakeMouseButtonDown = 0;
|
||
|
|
(*darwinEventQueue.pPtr->processInputProc)
|
||
|
|
(&xe, (DeviceIntPtr)darwinEventQueue.pPtr, 1);
|
||
|
|
|
||
|
|
// Bring modifiers back up to date
|
||
|
|
DarwinUpdateModifiers(&xe, KeyPress,
|
||
|
|
darwinFakeMouseButtonMask & old_flags);
|
||
|
|
darwinFakeMouseButtonMask = 0;
|
||
|
|
} else {
|
||
|
|
(*darwinEventQueue.pPtr->processInputProc)
|
||
|
|
(&xe, (DeviceIntPtr)darwinEventQueue.pPtr, 1);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MotionNotify:
|
||
|
|
miPointerAbsoluteCursor(xe.u.keyButtonPointer.rootX,
|
||
|
|
xe.u.keyButtonPointer.rootY,
|
||
|
|
xe.u.keyButtonPointer.time);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case kXDarwinUpdateModifiers:
|
||
|
|
{
|
||
|
|
// Update modifier state.
|
||
|
|
// Any amount of modifiers may have changed.
|
||
|
|
int flags = xe.u.clientMessage.u.l.longs0;
|
||
|
|
DarwinUpdateModifiers(&xe, KeyRelease,
|
||
|
|
old_flags & ~flags);
|
||
|
|
DarwinUpdateModifiers(&xe, KeyPress,
|
||
|
|
~old_flags & flags);
|
||
|
|
old_flags = flags;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case kXDarwinUpdateButtons:
|
||
|
|
{
|
||
|
|
long hwDelta = xe.u.clientMessage.u.l.longs0;
|
||
|
|
long hwButtons = xe.u.clientMessage.u.l.longs1;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for (i = 1; i < 5; i++) {
|
||
|
|
if (hwDelta & (1 << i)) {
|
||
|
|
// IOKit and X have different numbering for the
|
||
|
|
// middle and right mouse buttons.
|
||
|
|
if (i == 1) {
|
||
|
|
xe.u.u.detail = 3;
|
||
|
|
} else if (i == 2) {
|
||
|
|
xe.u.u.detail = 2;
|
||
|
|
} else {
|
||
|
|
xe.u.u.detail = i + 1;
|
||
|
|
}
|
||
|
|
if (hwButtons & (1 << i)) {
|
||
|
|
xe.u.u.type = ButtonPress;
|
||
|
|
} else {
|
||
|
|
xe.u.u.type = ButtonRelease;
|
||
|
|
}
|
||
|
|
(*darwinEventQueue.pPtr->processInputProc)
|
||
|
|
(&xe, (DeviceIntPtr)darwinEventQueue.pPtr, 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case kXDarwinScrollWheel:
|
||
|
|
{
|
||
|
|
short count = xe.u.clientMessage.u.s.shorts0;
|
||
|
|
|
||
|
|
if (count > 0) {
|
||
|
|
xe.u.u.detail = SCROLLWHEELUPFAKE;
|
||
|
|
} else {
|
||
|
|
xe.u.u.detail = SCROLLWHEELDOWNFAKE;
|
||
|
|
count = -count;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (; count; --count) {
|
||
|
|
xe.u.u.type = ButtonPress;
|
||
|
|
(*darwinEventQueue.pPtr->processInputProc)
|
||
|
|
(&xe, (DeviceIntPtr)darwinEventQueue.pPtr, 1);
|
||
|
|
xe.u.u.type = ButtonRelease;
|
||
|
|
(*darwinEventQueue.pPtr->processInputProc)
|
||
|
|
(&xe, (DeviceIntPtr)darwinEventQueue.pPtr, 1);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
default:
|
||
|
|
// Check for mode specific event
|
||
|
|
DarwinModeProcessEvent(&xe);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
miPointerUpdate();
|
||
|
|
}
|