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mpv/osdep/macosx_events.m
Stefano Pigozzi e8a6e1a201 macosx_events: handle key modifiers with media keys
This was overlooked in the previous inplementation. Adding it required some
refactoring of the `handleKeyDown:` method in order to extract common parts
with `handleMediaKey:`.
2013-06-06 21:33:31 +02:00

335 lines
9.8 KiB
Objective-C

/*
* Cocoa Application Event Handling
*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
// Carbon header is included but Carbon is NOT linked to mpv's binary. This
// file only needs this include to use the keycode definitions in keymap.
#import <Carbon/Carbon.h>
// Media keys definitions
#import <IOKit/hidsystem/ev_keymap.h>
#import <Cocoa/Cocoa.h>
#include "talloc.h"
#include "core/input/input.h"
#include "core/mp_fifo.h"
// doesn't make much sense, but needed to access keymap functionality
#include "video/out/vo.h"
#include "osdep/macosx_events.h"
#import "osdep/macosx_application_objc.h"
#define NSLeftAlternateKeyMask (0x000020 | NSAlternateKeyMask)
#define NSRightAlternateKeyMask (0x000040 | NSAlternateKeyMask)
static bool LeftAltPressed(NSEvent *event)
{
return ([event modifierFlags] & NSLeftAlternateKeyMask) ==
NSLeftAlternateKeyMask;
}
static bool RightAltPressed(NSEvent *event)
{
return ([event modifierFlags] & NSRightAlternateKeyMask) ==
NSRightAlternateKeyMask;
}
static const struct mp_keymap keymap[] = {
// special keys
{kVK_Return, MP_KEY_ENTER}, {kVK_Escape, MP_KEY_ESC},
{kVK_Delete, MP_KEY_BACKSPACE}, {kVK_Option, MP_KEY_BACKSPACE},
{kVK_Control, MP_KEY_BACKSPACE}, {kVK_Shift, MP_KEY_BACKSPACE},
{kVK_Tab, MP_KEY_TAB},
// cursor keys
{kVK_UpArrow, MP_KEY_UP}, {kVK_DownArrow, MP_KEY_DOWN},
{kVK_LeftArrow, MP_KEY_LEFT}, {kVK_RightArrow, MP_KEY_RIGHT},
// navigation block
{kVK_Help, MP_KEY_INSERT}, {kVK_ForwardDelete, MP_KEY_DELETE},
{kVK_Home, MP_KEY_HOME}, {kVK_End, MP_KEY_END},
{kVK_PageUp, MP_KEY_PAGE_UP}, {kVK_PageDown, MP_KEY_PAGE_DOWN},
// F-keys
{kVK_F1, MP_KEY_F + 1}, {kVK_F2, MP_KEY_F + 2}, {kVK_F3, MP_KEY_F + 3},
{kVK_F4, MP_KEY_F + 4}, {kVK_F5, MP_KEY_F + 5}, {kVK_F6, MP_KEY_F + 6},
{kVK_F7, MP_KEY_F + 7}, {kVK_F8, MP_KEY_F + 8}, {kVK_F9, MP_KEY_F + 9},
{kVK_F10, MP_KEY_F + 10}, {kVK_F11, MP_KEY_F + 11}, {kVK_F12, MP_KEY_F + 12},
// numpad
{kVK_ANSI_KeypadPlus, '+'}, {kVK_ANSI_KeypadMinus, '-'},
{kVK_ANSI_KeypadMultiply, '*'}, {kVK_ANSI_KeypadDivide, '/'},
{kVK_ANSI_KeypadEnter, MP_KEY_KPENTER},
{kVK_ANSI_KeypadDecimal, MP_KEY_KPDEC},
{kVK_ANSI_Keypad0, MP_KEY_KP0}, {kVK_ANSI_Keypad1, MP_KEY_KP1},
{kVK_ANSI_Keypad2, MP_KEY_KP2}, {kVK_ANSI_Keypad3, MP_KEY_KP3},
{kVK_ANSI_Keypad4, MP_KEY_KP4}, {kVK_ANSI_Keypad5, MP_KEY_KP5},
{kVK_ANSI_Keypad6, MP_KEY_KP6}, {kVK_ANSI_Keypad7, MP_KEY_KP7},
{kVK_ANSI_Keypad8, MP_KEY_KP8}, {kVK_ANSI_Keypad9, MP_KEY_KP9},
{0, 0}
};
static int convert_key(unsigned key, unsigned charcode)
{
int mpkey = lookup_keymap_table(keymap, key);
if (mpkey)
return mpkey;
return charcode;
}
void cocoa_init_apple_remote(void)
{
Application *app = mpv_shared_app();
[app.eventsResponder startAppleRemote];
}
void cocoa_uninit_apple_remote(void)
{
Application *app = mpv_shared_app();
[app.eventsResponder stopAppleRemote];
}
static int mk_code(NSEvent *event)
{
return (([event data1] & 0xFFFF0000) >> 16);
}
static int mk_flags(NSEvent *event)
{
return ([event data1] & 0x0000FFFF);
}
static int mk_down(NSEvent *event) {
return (((mk_flags(event) & 0xFF00) >> 8)) == 0xA;
}
static CGEventRef tap_event_callback(CGEventTapProxy proxy, CGEventType type,
CGEventRef event, void *ctx)
{
EventsResponder *responder = ctx;
if (type == kCGEventTapDisabledByTimeout) {
// The Mach Port receiving the taps became unresponsive for some
// reason, restart listening on it.
[responder restartMediaKeys];
return event;
}
if (type == kCGEventTapDisabledByUserInput)
return event;
NSEvent *nse = [NSEvent eventWithCGEvent:event];
if ([nse type] != NSSystemDefined || [nse subtype] != 8)
// This is not a media key
return event;
if (mk_down(nse) && [responder handleMediaKey:nse]) {
// Handled this event, return nil so that it is removed from the
// global queue.
return nil;
} else {
// Was a media key but we were not interested in it. Leave it in the
// global queue by returning the original event.
return event;
}
}
void cocoa_init_media_keys(void) {
Application *app = mpv_shared_app();
[app.eventsResponder startMediaKeys];
}
void cocoa_uninit_media_keys(void) {
Application *app = mpv_shared_app();
[app.eventsResponder stopMediaKeys];
}
void cocoa_check_events(void)
{
Application *app = mpv_shared_app();
int key;
while ((key = [app.iqueue pop]) >= 0)
mplayer_put_key(app.keyFIFO, key);
}
void cocoa_put_key(int keycode)
{
[mpv_shared_app().iqueue push:keycode];
}
@implementation EventsResponder {
CFMachPortRef _mk_tap_port;
HIDRemote *_remote;
}
- (void)startAppleRemote
{
dispatch_async(dispatch_get_main_queue(), ^{
self->_remote = [[HIDRemote alloc] init];
if (self->_remote) {
[self->_remote setDelegate:self];
[self->_remote startRemoteControl:kHIDRemoteModeExclusiveAuto];
}
});
}
- (void)stopAppleRemote
{
dispatch_async(dispatch_get_main_queue(), ^{
[self->_remote stopRemoteControl];
[self->_remote release];
});
}
- (void)restartMediaKeys
{
CGEventTapEnable(self->_mk_tap_port, true);
}
- (void)startMediaKeys
{
dispatch_async(dispatch_get_main_queue(), ^{
// Install a Quartz Event Tap. This will notify mpv through the
// returned Mach Port and cause mpv to execute the `tap_event_callback`
// function.
self->_mk_tap_port = CGEventTapCreate(kCGSessionEventTap,
kCGHeadInsertEventTap,
kCGEventTapOptionDefault,
CGEventMaskBit(NX_SYSDEFINED),
tap_event_callback,
self);
assert(self->_mk_tap_port != nil);
NSMachPort *port = (NSMachPort *)self->_mk_tap_port;
[[NSRunLoop mainRunLoop] addPort:port forMode:NSRunLoopCommonModes];
});
}
- (void)stopMediaKeys
{
dispatch_async(dispatch_get_main_queue(), ^{
NSMachPort *port = (NSMachPort *)self->_mk_tap_port;
[[NSRunLoop mainRunLoop] removePort:port forMode:NSRunLoopCommonModes];
CFRelease(self->_mk_tap_port);
self->_mk_tap_port = nil;
});
}
- (NSArray *) keyEquivalents
{
return @[@"h", @"q", @"Q", @"0", @"1", @"2"];
}
- (BOOL)isAppKeyEquivalent:(NSString *)eq withEvent:(NSEvent *)event
{
if ([event modifierFlags] & NSCommandKeyMask)
for(NSString *c in [self keyEquivalents])
if ([eq isEqualToString:c])
return YES;
return NO;
}
- (BOOL)handleMediaKey:(NSEvent *)event
{
NSDictionary *keymap = @{
@(NX_KEYTYPE_PLAY): @(MP_MK_PLAY),
@(NX_KEYTYPE_REWIND): @(MP_MK_PREV),
@(NX_KEYTYPE_FAST): @(MP_MK_NEXT),
};
return [self handleKey:mk_code(event)
withMask:[self keyModifierMask:event]
andMapping:keymap];
}
- (NSEvent*)handleKeyDown:(NSEvent *)event
{
NSString *chars;
if (RightAltPressed(event))
chars = [event characters];
else
chars = [event charactersIgnoringModifiers];
int key = convert_key([event keyCode], *[chars UTF8String]);
if (key > -1) {
if ([self isAppKeyEquivalent:chars withEvent:event])
// propagate the event in case this is a menu key equivalent
return event;
key |= [self keyModifierMask:event];
cocoa_put_key(key);
}
return nil;
}
- (void)hidRemote:(HIDRemote *)remote
eventWithButton:(HIDRemoteButtonCode)buttonCode
isPressed:(BOOL)isPressed
fromHardwareWithAttributes:(NSMutableDictionary *)attributes
{
if (!isPressed) return;
NSDictionary *keymap = @{
@(kHIDRemoteButtonCodePlay): @(MP_AR_PLAY),
@(kHIDRemoteButtonCodePlayHold): @(MP_AR_PLAY_HOLD),
@(kHIDRemoteButtonCodeCenter): @(MP_AR_CENTER),
@(kHIDRemoteButtonCodeCenterHold): @(MP_AR_CENTER_HOLD),
@(kHIDRemoteButtonCodeLeft): @(MP_AR_PREV),
@(kHIDRemoteButtonCodeLeftHold): @(MP_AR_PREV_HOLD),
@(kHIDRemoteButtonCodeRight): @(MP_AR_NEXT),
@(kHIDRemoteButtonCodeRightHold): @(MP_AR_NEXT_HOLD),
@(kHIDRemoteButtonCodeMenu): @(MP_AR_MENU),
@(kHIDRemoteButtonCodeMenuHold): @(MP_AR_MENU_HOLD),
@(kHIDRemoteButtonCodeUp): @(MP_AR_VUP),
@(kHIDRemoteButtonCodeUpHold): @(MP_AR_VUP_HOLD),
@(kHIDRemoteButtonCodeDown): @(MP_AR_VDOWN),
@(kHIDRemoteButtonCodeDownHold): @(MP_AR_VDOWN_HOLD),
};
[self handleKey:buttonCode withMask:0 andMapping:keymap];
}
- (int)keyModifierMask:(NSEvent *)event
{
int mask = 0;
if ([event modifierFlags] & NSShiftKeyMask)
mask |= MP_KEY_MODIFIER_SHIFT;
if ([event modifierFlags] & NSControlKeyMask)
mask |= MP_KEY_MODIFIER_CTRL;
if (LeftAltPressed(event))
mask |= MP_KEY_MODIFIER_ALT;
if ([event modifierFlags] & NSCommandKeyMask)
mask |= MP_KEY_MODIFIER_META;
return mask;
}
-(BOOL)handleKey:(int)key withMask:(int)mask andMapping:(NSDictionary *)mapping
{
int mpkey = [mapping[@(key)] intValue];
if (mpkey > 0) {
cocoa_put_key(mpkey | mask);
return YES;
} else {
return NO;
}
}
@end