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/*
* tkMacOSXEvent.c --
*
* This file contains the basic Mac OS X Event handling routines.
*
* Copyright (c) 1995-1997 Sun Microsystems, Inc.
* Copyright 2001, Apple Computer, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tkMacOSXEvent.c,v 1.3.2.6 2006/04/11 10:22:57 das Exp $
*/
#include "tkMacOSXInt.h"
#include "tkMacOSXEvent.h"
#include "tkMacOSXDebug.h"
/*
*----------------------------------------------------------------------
*
* TkMacOSXFlushWindows --
*
* This routine flushes all the Carbon windows of the application. It
* is called by the setup procedure for the Tcl/Carbon event source.
*
* Results:
* None.
*
* Side effects:
* Flushes all Carbon windows
*
*----------------------------------------------------------------------
*/
void
TkMacOSXFlushWindows ()
{
WindowRef wRef = GetWindowList();
while (wRef) {
CGrafPtr portPtr = GetWindowPort(wRef);
if (QDIsPortBuffered(portPtr)) {
QDFlushPortBuffer(portPtr, NULL);
}
wRef = GetNextWindow(wRef);
}
}
/*
*----------------------------------------------------------------------
*
* TkMacOSXProcessEvent --
*
* This dispatches a filtered Carbon event to the appropriate handler
*
* Note on MacEventStatus.stopProcessing: Please be conservative in the
* individual handlers and don't assume the event is fully handled
* unless you *really* need to ensure that other handlers don't see the
* event anymore. Some OS manager or library might be interested in
* events even after they are already handled on the Tk level.
*
* Results:
* 0 on success
* -1 on failure
*
* Side effects:
* Converts a Carbon event to a Tk event
*
*----------------------------------------------------------------------
*/
int
TkMacOSXProcessEvent(TkMacOSXEvent * eventPtr, MacEventStatus * statusPtr)
{
switch (eventPtr->eClass) {
case kEventClassMouse:
TkMacOSXProcessMouseEvent(eventPtr, statusPtr);
break;
case kEventClassWindow:
TkMacOSXProcessWindowEvent(eventPtr, statusPtr);
break;
case kEventClassKeyboard:
TkMacOSXProcessKeyboardEvent(eventPtr, statusPtr);
break;
case kEventClassApplication:
TkMacOSXProcessApplicationEvent(eventPtr, statusPtr);
break;
case kEventClassMenu:
TkMacOSXProcessMenuEvent(eventPtr, statusPtr);
break;
case kEventClassCommand:
TkMacOSXProcessCommandEvent(eventPtr, statusPtr);
break;
default:
#ifdef TK_MAC_DEBUG
{
char buf [256];
fprintf(stderr,
"Unrecognised event : %s\n",
CarbonEventToAscii(eventPtr->eventRef, buf));
}
#endif
break;
}
return 0;
}
/*
*----------------------------------------------------------------------
*
* TkMacOSXProcessMenuEvent --
*
* This routine processes the event in eventPtr, and
* generates the appropriate Tk events from it.
*
* Results:
* True if event(s) are generated - false otherwise.
*
* Side effects:
* Additional events may be place on the Tk event queue.
*
*----------------------------------------------------------------------
*/
int
TkMacOSXProcessMenuEvent(TkMacOSXEvent *eventPtr, MacEventStatus * statusPtr)
{
int menuContext;
OSStatus status;
switch (eventPtr->eKind) {
case kEventMenuBeginTracking:
case kEventMenuEndTracking:
break;
default:
return 0;
break;
}
status = GetEventParameter(eventPtr->eventRef,
kEventParamMenuContext,
typeUInt32, NULL,
sizeof(menuContext), NULL,
&menuContext);
if (status == noErr && (menuContext & kMenuContextMenuBar)) {
static int oldMode = TCL_SERVICE_ALL;
if (eventPtr->eKind == kEventMenuBeginTracking) {
oldMode = Tcl_SetServiceMode(TCL_SERVICE_ALL);
TkMacOSXClearMenubarActive();
/*
* Handle -postcommand
*/
TkMacOSXPreprocessMenu();
} else {
Tcl_SetServiceMode(oldMode);
}
}
return 0;
}
/*
*----------------------------------------------------------------------
*
* TkMacOSXProcessCommandEvent --
*
* This routine processes the event in eventPtr, and
* generates the appropriate Tk events from it.
*
* Results:
* True if event(s) are generated - false otherwise.
*
* Side effects:
* Additional events may be place on the Tk event queue.
*
*----------------------------------------------------------------------
*/
int
TkMacOSXProcessCommandEvent(TkMacOSXEvent *eventPtr, MacEventStatus * statusPtr)
{
HICommand command;
int menuContext;
OSStatus status;
switch (eventPtr->eKind) {
case kEventCommandProcess:
case kEventCommandUpdateStatus:
break;
default:
return 0;
break;
}
status = GetEventParameter(eventPtr->eventRef,
kEventParamDirectObject,
typeHICommand, NULL,
sizeof(command), NULL,
&command);
if (status == noErr && (command.attributes & kHICommandFromMenu)) {
if (eventPtr->eKind == kEventCommandProcess) {
status = GetEventParameter(eventPtr->eventRef,
kEventParamMenuContext,
typeUInt32, NULL,
sizeof(menuContext), NULL,
&menuContext);
if (status == noErr && (menuContext & kMenuContextMenuBar) &&
(menuContext & kMenuContextMenuBarTracking)) {
TkMacOSXHandleMenuSelect(GetMenuID(command.menu.menuRef),
command.menu.menuItemIndex,
GetCurrentEventKeyModifiers() & optionKey);
return 1;
}
} else {
Tcl_CmdInfo dummy;
if (command.commandID == kHICommandPreferences && eventPtr->interp) {
if (Tcl_GetCommandInfo(eventPtr->interp,
"::tk::mac::ShowPreferences", &dummy)) {
if (!IsMenuItemEnabled(command.menu.menuRef,
command.menu.menuItemIndex)) {
EnableMenuItem(command.menu.menuRef,
command.menu.menuItemIndex);
}
} else {
if (IsMenuItemEnabled(command.menu.menuRef,
command.menu.menuItemIndex)) {
DisableMenuItem(command.menu.menuRef,
command.menu.menuItemIndex);
}
}
return 1;
}
}
}
return 0;
}
/*
*----------------------------------------------------------------------
*
* TkMacOSXReceiveAndProcessEvent --
*
* This receives a carbon event and converts it to a Tk event
*
* Results:
* 0 on success
* Mac OS error number on failure
*
* Side effects:
* This receives the next Carbon event and converts it to the
* appropriate Tk event
*
*----------------------------------------------------------------------
*/
OSStatus
TkMacOSXReceiveAndProcessEvent()
{
static EventTargetRef targetRef = NULL;
EventRef eventRef;
OSStatus err;
/*
* This is a poll, since we have already counted the events coming
* into this routine, and are guaranteed to have one waiting.
*/
err = ReceiveNextEvent(0, NULL, kEventDurationNoWait, true, &eventRef);
if (err == noErr) {
if (!targetRef) {
targetRef = GetEventDispatcherTarget();
}
TkMacOSXStartTclEventLoopCarbonTimer();
err = SendEventToEventTarget(eventRef,targetRef);
TkMacOSXStopTclEventLoopCarbonTimer();
#ifdef TK_MAC_DEBUG
if (err != noErr && err != eventLoopTimedOutErr
&& err != eventNotHandledErr
) {
char buf [256];
fprintf(stderr,
"RCNE SendEventToEventTarget (%s) failed, %d\n",
CarbonEventToAscii(eventRef, buf), (int)err);
}
#endif
ReleaseEvent(eventRef);
}
return err;
}
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