intf.m

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/*****************************************************************************
 * intf.m: MacOS X interface module
 *****************************************************************************
 * Copyright (C) 2002-2004 VideoLAN
 * $Id: intf.m,v 1.115 2004/01/30 12:44:21 hartman Exp $
 *
 * Authors: Jon Lech Johansen <[e-mail]>
 *          Christophe Massiot <[e-mail]>
 *          Derk-Jan Hartman <hartman at videolan.org>
 *
 * This program 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.
 * 
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <stdlib.h>                                      /* malloc(), free() */
#include <sys/param.h>                                    /* for MAXPATHLEN */
#include <string.h>
#include <vlc_keys.h>

#include "intf.h"
#include "vout.h"
#include "prefs.h"
#include "playlist.h"
#include "info.h"
#include "controls.h"

/*****************************************************************************
 * Local prototypes.
 *****************************************************************************/
static void Run ( intf_thread_t *p_intf );

/*****************************************************************************
 * OpenIntf: initialize interface
 *****************************************************************************/
int E_(OpenIntf) ( vlc_object_t *p_this )
{   
    intf_thread_t *p_intf = (intf_thread_t*) p_this;

    p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
    if( p_intf->p_sys == NULL )
    {
        return( 1 );
    }

    memset( p_intf->p_sys, 0, sizeof( *p_intf->p_sys ) );
    
    p_intf->p_sys->o_pool = [[NSAutoreleasePool alloc] init];
    
    /* Put Cocoa into multithread mode as soon as possible.
     * http://developer.apple.com/techpubs/macosx/Cocoa/
     * TasksAndConcepts/ProgrammingTopics/Multithreading/index.html
     * This thread does absolutely nothing at all. */
    [NSThread detachNewThreadSelector:@selector(self) toTarget:[NSString string] withObject:nil];
    
    p_intf->p_sys->o_sendport = [[NSPort port] retain];
    p_intf->p_sys->p_sub = msg_Subscribe( p_intf );
    p_intf->pf_run = Run;
    
    [[VLCApplication sharedApplication] autorelease];
    [NSApp setIntf: p_intf];


    [NSBundle loadNibNamed: @"MainMenu" owner: NSApp];

    return( 0 );
}

/*****************************************************************************
 * CloseIntf: destroy interface
 *****************************************************************************/
void E_(CloseIntf) ( vlc_object_t *p_this )
{
    intf_thread_t *p_intf = (intf_thread_t*) p_this;

    msg_Unsubscribe( p_intf, p_intf->p_sys->p_sub );

    [p_intf->p_sys->o_sendport release];
    [p_intf->p_sys->o_pool release];

    free( p_intf->p_sys );
}

/*****************************************************************************
 * Run: main loop
 *****************************************************************************/
static void Run( intf_thread_t *p_intf )
{
    /* Do it again - for some unknown reason, vlc_thread_create() often
     * fails to go to real-time priority with the first launched thread
     * (???) --Meuuh */
    vlc_thread_set_priority( p_intf, VLC_THREAD_PRIORITY_LOW );

    [NSApp run];
}

/*****************************************************************************
 * VLCApplication implementation 
 *****************************************************************************/
@implementation VLCApplication

- (NSString *)localizedString:(char *)psz
{
    NSString * o_str = nil;

    if( psz != NULL )
    {
        o_str = [[[NSString alloc] initWithUTF8String: psz] autorelease];
    }
    if ( o_str == NULL )
    {
        msg_Err( p_intf, "could not translate: %s", psz );
    }

    return( o_str );
}

- (char *)delocalizeString:(NSString *)id
{
    NSData * o_data = [id dataUsingEncoding: NSUTF8StringEncoding
                          allowLossyConversion: NO];
    char * psz_string;

    if ( o_data == nil )
    {
        o_data = [id dataUsingEncoding: NSUTF8StringEncoding
                     allowLossyConversion: YES];
        psz_string = malloc( [o_data length] + 1 ); 
        [o_data getBytes: psz_string];
        psz_string[ [o_data length] ] = '\0';
        msg_Err( p_intf, "cannot convert to wanted encoding: %s",
                 psz_string );
    }
    else
    {
        psz_string = malloc( [o_data length] + 1 ); 
        [o_data getBytes: psz_string];
        psz_string[ [o_data length] ] = '\0';
    }

    return psz_string;
}

/* i_width is in pixels */
- (NSString *)wrapString: (NSString *)o_in_string toWidth: (int) i_width
{
    NSMutableString *o_wrapped;
    NSString *o_out_string;
    NSRange glyphRange, effectiveRange, charRange;
    NSRect lineFragmentRect;
    unsigned glyphIndex, breaksInserted = 0;

    NSTextStorage *o_storage = [[NSTextStorage alloc] initWithString: o_in_string
        attributes: [NSDictionary dictionaryWithObjectsAndKeys:
        [NSFont labelFontOfSize: 0.0], NSFontAttributeName, nil]];
    NSLayoutManager *o_layout_manager = [[NSLayoutManager alloc] init];
    NSTextContainer *o_container = [[NSTextContainer alloc]
        initWithContainerSize: NSMakeSize(i_width, 2000)];
    
    [o_layout_manager addTextContainer: o_container];
    [o_container release];
    [o_storage addLayoutManager: o_layout_manager];
    [o_layout_manager release];
        
    o_wrapped = [o_in_string mutableCopy];
    glyphRange = [o_layout_manager glyphRangeForTextContainer: o_container];
    
    for( glyphIndex = glyphRange.location ; glyphIndex < NSMaxRange(glyphRange) ;
            glyphIndex += effectiveRange.length) {
        lineFragmentRect = [o_layout_manager lineFragmentRectForGlyphAtIndex: glyphIndex
                                            effectiveRange: &effectiveRange];
        charRange = [o_layout_manager characterRangeForGlyphRange: effectiveRange
                                    actualGlyphRange: &effectiveRange];
        if ([o_wrapped lineRangeForRange:
                NSMakeRange(charRange.location + breaksInserted, charRange.length)].length > charRange.length) {
            [o_wrapped insertString: @"\n" atIndex: NSMaxRange(charRange) + breaksInserted];
            breaksInserted++;
        }
    }
    o_out_string = [NSString stringWithString: o_wrapped];
    [o_wrapped release];
    [o_storage release];
    
    return o_out_string;
}

- (void)setIntf:(intf_thread_t *)_p_intf
{
    p_intf = _p_intf;
}

- (intf_thread_t *)getIntf
{
    return( p_intf );
}

- (void)terminate:(id)sender
{
    p_intf->p_vlc->b_die = VLC_TRUE;
}

@end

int ExecuteOnMainThread( id target, SEL sel, void * p_arg )
{
    int i_ret = 0;

    NSAutoreleasePool * o_pool = [[NSAutoreleasePool alloc] init];

    if( [target respondsToSelector: @selector(performSelectorOnMainThread:
                                             withObject:waitUntilDone:)] )
    {
        [target performSelectorOnMainThread: sel
                withObject: [NSValue valueWithPointer: p_arg]
                waitUntilDone: YES];
    }
    else if( NSApp != nil && [NSApp respondsToSelector: @selector(getIntf)] ) 
    {
        NSValue * o_v1;
        NSValue * o_v2;
        NSArray * o_array;
        NSPort * o_recv_port;
        NSInvocation * o_inv;
        NSPortMessage * o_msg;
        intf_thread_t * p_intf;
        NSConditionLock * o_lock;
        NSMethodSignature * o_sig;

        id * val[] = { &o_lock, &o_v2 };

        p_intf = (intf_thread_t *)[NSApp getIntf];

        o_recv_port = [[NSPort port] retain];
        o_v1 = [NSValue valueWithPointer: val]; 
        o_v2 = [NSValue valueWithPointer: p_arg];

        o_sig = [target methodSignatureForSelector: sel];
        o_inv = [NSInvocation invocationWithMethodSignature: o_sig];
        [o_inv setArgument: &o_v1 atIndex: 2];
        [o_inv setTarget: target];
        [o_inv setSelector: sel];

        o_array = [NSArray arrayWithObject:
            [NSData dataWithBytes: &o_inv length: sizeof(o_inv)]];
        o_msg = [[NSPortMessage alloc]
            initWithSendPort: p_intf->p_sys->o_sendport
            receivePort: o_recv_port components: o_array];

        o_lock = [[NSConditionLock alloc] initWithCondition: 0];
        [o_msg sendBeforeDate: [NSDate distantPast]];
        [o_lock lockWhenCondition: 1];
        [o_lock unlock];
        [o_lock release];

        [o_msg release];
        [o_recv_port release];
    } 
    else
    {
        i_ret = 1;
    }

    [o_pool release];

    return( i_ret );
}

/*****************************************************************************
 * playlistChanged: Callback triggered by the intf-change playlist
 * variable, to let the intf update the playlist.
 *****************************************************************************/
int PlaylistChanged( vlc_object_t *p_this, const char *psz_variable,
                     vlc_value_t old_val, vlc_value_t new_val, void *param )
{
    intf_thread_t * p_intf = [NSApp getIntf];
    p_intf->p_sys->b_playlist_update = TRUE;
    p_intf->p_sys->b_intf_update = TRUE;
    return VLC_SUCCESS;
}

static struct
{
    unichar i_nskey;
    unsigned int i_vlckey;
} nskeys_to_vlckeys[] = 
{
    { NSUpArrowFunctionKey, KEY_UP },
    { NSDownArrowFunctionKey, KEY_DOWN },
    { NSLeftArrowFunctionKey, KEY_LEFT },
    { NSRightArrowFunctionKey, KEY_RIGHT },
    { NSF1FunctionKey, KEY_F1 },
    { NSF2FunctionKey, KEY_F2 },
    { NSF3FunctionKey, KEY_F3 },
    { NSF4FunctionKey, KEY_F4 },
    { NSF5FunctionKey, KEY_F5 },
    { NSF6FunctionKey, KEY_F6 },
    { NSF7FunctionKey, KEY_F7 },
    { NSF8FunctionKey, KEY_F8 },
    { NSF9FunctionKey, KEY_F9 },
    { NSF10FunctionKey, KEY_F10 },
    { NSF11FunctionKey, KEY_F11 },
    { NSF12FunctionKey, KEY_F12 },
    { NSHomeFunctionKey, KEY_HOME },
    { NSEndFunctionKey, KEY_END },
    { NSPageUpFunctionKey, KEY_PAGEUP },
    { NSPageDownFunctionKey, KEY_PAGEDOWN },
    { NSTabCharacter, KEY_TAB },
    { NSCarriageReturnCharacter, KEY_ENTER },
    { NSEnterCharacter, KEY_ENTER },
    { NSBackspaceCharacter, KEY_BACKSPACE },
    { (unichar) ' ', KEY_SPACE },
    { (unichar) 0x1b, KEY_ESC },
    {0,0}
};

unichar VLCKeyToCocoa( unsigned int i_key )
{
    unsigned int i;
    
    for( i = 0; nskeys_to_vlckeys[i].i_vlckey != 0; i++ )
    {
        if( nskeys_to_vlckeys[i].i_vlckey == (i_key & ~KEY_MODIFIER) )
        {
            return nskeys_to_vlckeys[i].i_nskey;
        }
    }
    return (unichar)(i_key & ~KEY_MODIFIER);
}

unsigned int CocoaKeyToVLC( unichar i_key )
{
    unsigned int i;
    
    for( i = 0; nskeys_to_vlckeys[i].i_nskey != 0; i++ )
    {
        if( nskeys_to_vlckeys[i].i_nskey == i_key )
        {
            return nskeys_to_vlckeys[i].i_vlckey;
        }
    }