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mutter/clutter/osx/clutter-event-osx.c
Emmanuele Bassi adb6ffbd0e backend: Unify the event initialization 
Input backends are, in some cases, independent from the windowing system
backends; we can initialize input handling using a model similar to what
we use for windowing backends, including an environment variable and
compile-/run-time checks.

This model allows us to remove the backend-specific init_events(), and
use a generic implementation directly inside the base ClutterBackend
class, thus further reducing the backend-specific code that every
platform has to implement.

This requires some minor surgery to every single backend, to make sure
that the function exposed to initialize the event loop is similar and
performs roughly the same operations.
2011-11-10 14:42:40 +00:00

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/* Clutter - An OpenGL based 'interactive canvas' library.
* OSX backend - event loops integration
*
* Copyright (C) 2007-2008 Tommi Komulainen <tommi.komulainen@iki.fi>
* Copyright (C) 2007 OpenedHand Ltd.
* Copyright (C) 2011 Crystalnix <vgachkaylo@crystalnix.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#include "config.h"
#include "clutter-osx.h"
#include "clutter-device-manager-osx.h"
#include "clutter-stage-osx.h"
#import <AppKit/AppKit.h>
#include <glib.h>
#include "clutter-debug.h"
#include "clutter-device-manager.h"
#include "clutter-event-private.h"
#include "clutter-keysyms.h"
#include "clutter-private.h"
#include "clutter-stage-private.h"
#define WHEEL_DELTA 1
/*************************************************************************/
@interface NSEvent (Clutter)
- (gint)clutterTime;
- (gint)clutterButton;
- (void)clutterX:(gfloat*)ptrX y:(gfloat*)ptrY;
- (gint)clutterModifierState;
- (guint)clutterKeyVal;
@end
@implementation NSEvent (Clutter)
- (gint)clutterTime
{
return [self timestamp] * 1000;
}
- (gint)clutterButton
{
switch ([self buttonNumber])
{
case 0: return 1; /* left */
case 1: return 3; /* right */
case 2: return 2; /* middle */
default: return 1 + [self buttonNumber];
}
}
- (void)clutterX:(gfloat*)ptrX y:(gfloat*)ptrY
{
NSView *view = [[self window] contentView];
NSPoint pt = [view convertPoint:[self locationInWindow] fromView:nil];
*ptrX = pt.x;
*ptrY = pt.y;
}
- (gint)clutterModifierState
{
guint mods = [self modifierFlags];
guint type = [self type];
gint rv = 0;
/* add key masks */
if (mods & NSAlphaShiftKeyMask)
rv |= CLUTTER_LOCK_MASK;
if (mods & NSShiftKeyMask)
rv |= CLUTTER_SHIFT_MASK;
if (mods & NSControlKeyMask)
rv |= CLUTTER_CONTROL_MASK;
if (mods & NSAlternateKeyMask)
rv |= CLUTTER_MOD1_MASK;
if (mods & NSCommandKeyMask)
rv |= CLUTTER_MOD2_MASK;
/* add button mask */
if ((type == NSLeftMouseDragged) ||
(type == NSRightMouseDragged) ||
(type == NSOtherMouseDragged))
rv |= CLUTTER_BUTTON1_MASK << [self buttonNumber];
return rv;
}
- (guint)clutterKeyVal
{
unichar c;
/* FIXME: doing this right is a lot of work, see gdkkeys-quartz.c in gtk+
* For now handle some common/simple keys only. Might not work with other
* hardware than mine (MacBook Pro, finnish layout). Sorry.
*
* charactersIgnoringModifiers ignores most modifiers, not Shift though.
* So, for all Shift-modified keys we'll end up reporting 'keyval' identical
* to 'unicode_value' Instead of <Shift>a or <Shift>3 you'd get <Shift>A
* and <Shift>#
*/
if ([self type] == NSFlagsChanged)
{
switch ([self keyCode])
{
case 54: // Right Command
return CLUTTER_KEY_Meta_R;
case 55: // Left Command
return CLUTTER_KEY_Meta_L;
case 57: // Capslock
return CLUTTER_KEY_Caps_Lock;
case 56: // Left Shift
return CLUTTER_KEY_Shift_L;
case 60: // Right Shift
return CLUTTER_KEY_Shift_R;
case 58: // Left Alt
return CLUTTER_KEY_Alt_L;
case 61: // Right Alt
return CLUTTER_KEY_Alt_R;
case 59: // Left Ctrl
return CLUTTER_KEY_Control_L;
case 62: // Right Ctrl
return CLUTTER_KEY_Control_R;
case 63: // Function
return CLUTTER_KEY_function;
default: // No such key??!??
CLUTTER_NOTE (EVENT, "Got NSFlagsChanged event with keyCode not a known modifier key: %d",
[self keyCode]);
return CLUTTER_KEY_VoidSymbol;
}
}
c = [[self charactersIgnoringModifiers] characterAtIndex:0];
/* Latin-1 characters, 1:1 mapping - this ought to be reliable */
if ((c >= 0x0020 && c <= 0x007e) ||
(c >= 0x00a0 && c <= 0x00ff))
return c;
switch (c)
{
/* these should be fairly standard */
/* (maybe add 0x0008 (Ctrl+H) for backspace too) */
case 0x000d:
return CLUTTER_KEY_Return;
case 0x001b:
return CLUTTER_KEY_Escape;
case 0x007f:
return CLUTTER_KEY_BackSpace;
/* Defined in NSEvent.h */
case NSUpArrowFunctionKey:
return CLUTTER_KEY_Up;
case NSDownArrowFunctionKey:
return CLUTTER_KEY_Down;
case NSLeftArrowFunctionKey:
return CLUTTER_KEY_Left;
case NSRightArrowFunctionKey:
return CLUTTER_KEY_Right;
case NSF1FunctionKey:
return CLUTTER_KEY_F1;
case NSF2FunctionKey:
return CLUTTER_KEY_F2;
case NSF3FunctionKey:
return CLUTTER_KEY_F3;
case NSF4FunctionKey:
return CLUTTER_KEY_F4;
case NSF5FunctionKey:
return CLUTTER_KEY_F5;
case NSF6FunctionKey:
return CLUTTER_KEY_F6;
case NSF7FunctionKey:
return CLUTTER_KEY_F7;
case NSF8FunctionKey:
return CLUTTER_KEY_F8;
case NSF9FunctionKey:
return CLUTTER_KEY_F9;
case NSF10FunctionKey:
return CLUTTER_KEY_F10;
case NSF11FunctionKey:
return CLUTTER_KEY_F11;
case NSF12FunctionKey:
return CLUTTER_KEY_F12;
case NSInsertFunctionKey:
return CLUTTER_KEY_Insert;
case NSDeleteFunctionKey:
return CLUTTER_KEY_Delete;
case NSHomeFunctionKey:
return CLUTTER_KEY_Home;
case NSEndFunctionKey:
return CLUTTER_KEY_End;
case NSPageUpFunctionKey:
return CLUTTER_KEY_Page_Up;
case NSPageDownFunctionKey:
return CLUTTER_KEY_Page_Down;
}
CLUTTER_NOTE (BACKEND, "unhandled unicode key 0x%x (%d)", c, c);
/* hardware dependent, worksforme(tm) Redundant due to above, left around as
* example.
*/
switch ([self keyCode])
{
case 115:
return CLUTTER_KEY_Home;
case 116:
return CLUTTER_KEY_Page_Up;
case 117:
return CLUTTER_KEY_Delete;
case 119:
return CLUTTER_KEY_End;
case 121:
return CLUTTER_KEY_Page_Down;
case 123:
return CLUTTER_KEY_Left;
case 124:
return CLUTTER_KEY_Right;
case 125:
return CLUTTER_KEY_Down;
case 126:
return CLUTTER_KEY_Up;
}
return 0;
}
@end
/*************************************************************************/
static void
take_and_queue_event (ClutterEvent *event)
{
_clutter_event_push (event, FALSE);
}
static void
process_scroll_event (ClutterEvent *event,
gboolean isVertical)
{
ClutterStageWindow *impl;
ClutterStageOSX *stage_osx;
gfloat *scroll_pos;
impl = _clutter_stage_get_window (event->any.stage);
stage_osx = CLUTTER_STAGE_OSX (impl);
scroll_pos = isVertical
? &(stage_osx->scroll_pos_y)
: &(stage_osx->scroll_pos_x);
while (abs (*scroll_pos) >= WHEEL_DELTA)
{
ClutterEvent *event_gen = clutter_event_new (CLUTTER_SCROLL);
event_gen->scroll.time = event->any.time;
event_gen->scroll.modifier_state = event->scroll.modifier_state;
event_gen->any.stage = event->any.stage;
event_gen->scroll.x = event->scroll.x;
event_gen->scroll.y = event->scroll.y;
if (*scroll_pos > 0)
{
event_gen->scroll.direction = isVertical ? CLUTTER_SCROLL_UP : CLUTTER_SCROLL_RIGHT;
*scroll_pos -= WHEEL_DELTA;
}
else
{
event_gen->scroll.direction = isVertical ? CLUTTER_SCROLL_DOWN : CLUTTER_SCROLL_LEFT;
*scroll_pos += WHEEL_DELTA;
}
clutter_event_set_device (event_gen, clutter_event_get_device (event));
take_and_queue_event (event_gen);
CLUTTER_NOTE (EVENT, "scroll %s at %f,%f",
(event_gen->scroll.direction == CLUTTER_SCROLL_UP) ? "UP" :
(
(event_gen->scroll.direction == CLUTTER_SCROLL_DOWN) ? "DOWN" :
(
(event_gen->scroll.direction == CLUTTER_SCROLL_RIGHT) ? "RIGHT" : "LEFT")),
event->scroll.x, event->scroll.y);
}
}
static gboolean
clutter_event_osx_translate (NSEvent *nsevent,
ClutterEvent *event)
{
ClutterDeviceManagerOSX *manager_osx;
ClutterStageOSX *stage_osx;
ClutterStageWindow *impl;
ClutterStage *stage;
stage = event->any.stage;
impl = _clutter_stage_get_window (event->any.stage);
stage_osx = CLUTTER_STAGE_OSX (impl);
manager_osx = CLUTTER_DEVICE_MANAGER_OSX (clutter_device_manager_get_default ());
event->any.time = [nsevent clutterTime];
switch ([nsevent type])
{
case NSLeftMouseDown:
case NSRightMouseDown:
case NSOtherMouseDown:
event->type = CLUTTER_BUTTON_PRESS;
/* fall through */
case NSLeftMouseUp:
case NSRightMouseUp:
case NSOtherMouseUp:
if (event->type != CLUTTER_BUTTON_PRESS)
event->type = CLUTTER_BUTTON_RELEASE;
event->button.button = [nsevent clutterButton];
event->button.click_count = [nsevent clickCount];
event->motion.modifier_state = [nsevent clutterModifierState];
[nsevent clutterX:&(event->button.x) y:&(event->button.y)];
clutter_event_set_device (event, manager_osx->core_pointer);
CLUTTER_NOTE (EVENT, "button %d %s at %f,%f clicks=%d",
(int)[nsevent buttonNumber],
event->type == CLUTTER_BUTTON_PRESS ? "press" : "release",
event->button.x, event->button.y,
event->button.click_count);
return TRUE;
case NSMouseMoved:
case NSLeftMouseDragged:
case NSRightMouseDragged:
case NSOtherMouseDragged:
event->type = CLUTTER_MOTION;
[nsevent clutterX:&(event->motion.x) y:&(event->motion.y)];
event->motion.modifier_state = [nsevent clutterModifierState];
clutter_event_set_device (event, manager_osx->core_pointer);
CLUTTER_NOTE (EVENT, "motion %d at %f,%f",
(int)[nsevent buttonNumber],
event->button.x, event->button.y);
return TRUE;
case NSMouseEntered:
event->type = CLUTTER_ENTER;
[nsevent clutterX:&(event->crossing.x) y:&(event->crossing.y)];
event->crossing.related = NULL;
event->crossing.source = CLUTTER_ACTOR (stage);
clutter_event_set_device (event, manager_osx->core_pointer);
_clutter_stage_add_device (stage, manager_osx->core_pointer);
CLUTTER_NOTE (EVENT, "enter at %f,%f",
event->crossing.x, event->crossing.y);
return TRUE;
case NSMouseExited:
event->type = CLUTTER_LEAVE;
[nsevent clutterX:&(event->crossing.x) y:&(event->crossing.y)];
event->crossing.related = NULL;
event->crossing.source = CLUTTER_ACTOR (stage);
clutter_event_set_device (event, manager_osx->core_pointer);
_clutter_stage_remove_device (stage, manager_osx->core_pointer);
CLUTTER_NOTE (EVENT, "exit at %f,%f",
event->crossing.x, event->crossing.y);
return TRUE;
case NSScrollWheel:
stage_osx->scroll_pos_x += [nsevent deltaX];
stage_osx->scroll_pos_y += [nsevent deltaY];
[nsevent clutterX:&(event->scroll.x) y:&(event->scroll.y)];
event->scroll.modifier_state = [nsevent clutterModifierState];
clutter_event_set_device (event, manager_osx->core_pointer);
process_scroll_event (event, TRUE);
process_scroll_event (event, FALSE);
break;
case NSFlagsChanged:
// FIXME: This logic fails if the user presses both Shift keys at once, for example:
// we treat releasing one of them as keyDown.
switch ([nsevent keyCode])
{
case 54: // Right Command
case 55: // Left Command
if ([nsevent modifierFlags] & NSCommandKeyMask)
event->type = CLUTTER_KEY_PRESS;
break;
case 57: // Capslock
if ([nsevent modifierFlags] & NSAlphaShiftKeyMask)
event->type = CLUTTER_KEY_PRESS;
break;
case 56: // Left Shift
case 60: // Right Shift
if ([nsevent modifierFlags] & NSShiftKeyMask)
event->type = CLUTTER_KEY_PRESS;
break;
case 58: // Left Alt
case 61: // Right Alt
if ([nsevent modifierFlags] & NSAlternateKeyMask)
event->type = CLUTTER_KEY_PRESS;
break;
case 59: // Left Ctrl
case 62: // Right Ctrl
if ([nsevent modifierFlags] & NSControlKeyMask)
event->type = CLUTTER_KEY_PRESS;
break;
case 63: // Function
if ([nsevent modifierFlags] & NSFunctionKeyMask)
event->type = CLUTTER_KEY_PRESS;
break;
}
/* fall through */
case NSKeyDown:
if ([nsevent type] == NSKeyDown)
event->type = CLUTTER_KEY_PRESS;
/* fall through */
case NSKeyUp:
if (event->type != CLUTTER_KEY_PRESS)
event->type = CLUTTER_KEY_RELEASE;
event->key.hardware_keycode = [nsevent keyCode];
event->key.modifier_state = [nsevent clutterModifierState];
event->key.keyval = [nsevent clutterKeyVal];
event->key.unicode_value = ([nsevent type] == NSFlagsChanged)
? (gunichar)'\0'
: [[nsevent characters] characterAtIndex:0];
clutter_event_set_device (event, manager_osx->core_keyboard);
CLUTTER_NOTE (EVENT, "key %d (%s) (%s) %s, keyval %d",
[nsevent keyCode],
([nsevent type] == NSFlagsChanged) ? "NULL" : [[nsevent characters] UTF8String],
([nsevent type] == NSFlagsChanged) ? "NULL" : [[nsevent charactersIgnoringModifiers] UTF8String],
(event->type == CLUTTER_KEY_PRESS) ? "press" : "release",
event->key.keyval);
return TRUE;
default:
CLUTTER_NOTE (EVENT, "unhandled event %d", (int)[nsevent type]);
break;
}
return FALSE;
}
void
_clutter_event_osx_put (NSEvent *nsevent,
ClutterStage *wrapper)
{
ClutterEvent *event = clutter_event_new (CLUTTER_NOTHING);
/* common fields */
event->any.stage = wrapper;
event->any.time = [nsevent clutterTime];
if (clutter_event_osx_translate (nsevent, event))
{
g_assert (event->type != CLUTTER_NOTHING);
_clutter_event_push (event, FALSE);
}
else
clutter_event_free (event);
}
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