cursor-mac.m

/*
 * CDDL HEADER START
 *
 * This file and its contents are supplied under the terms of the
 * Common Development and Distribution License ("CDDL"), version 1.0.
 * You may only use this file in accordance with the terms of version
 * 1.0 of the CDDL.
 *
 * A full copy of the text of the CDDL should have accompanied this
 * source.  A copy of the CDDL is also available via the Internet at
 * http://www.illumos.org/license/CDDL.
 *
 * CDDL HEADER END
*/
/*
 * Copyright 2020 Saso Kiselkov. All rights reserved.
 */
 
#include <errno.h>
 
#import <AppKit/NSCursor.h>
#import <AppKit/NSImage.h>
 
#include "acfutils/cursor.h"
#include "acfutils/helpers.h"
#include "acfutils/safe_alloc.h"
 
struct cursor_s {
    NSCursor    *crs;
};
 
cursor_t *
cursor_read_from_file(const char *filename_png)
{
    cursor_t *cursor = safe_calloc(1, sizeof (*cursor));
    NSString *path;
    NSImage *img;
    NSImageRep *rep;
    NSPoint p;
 
    ASSERT(filename_png != NULL);
    path = [NSString stringWithUTF8String: filename_png];
    img = [[NSImage alloc] initWithContentsOfFile: path];
    if (img == nil) {
        logMsg("Can't open image %s: %s", filename_png,
            strerror(errno));
        free(cursor);
        return (NULL);
    }
    rep = [[img representations] objectAtIndex: 0];
    ASSERT(rep != nil);
    p = NSMakePoint([rep pixelsWide] / 2, [rep pixelsHigh] / 2);
    cursor->crs = [[NSCursor alloc] initWithImage: img hotSpot: p];
    ASSERT(cursor->crs != NULL);
    [img release];
 
    return (cursor);
}
 
void
cursor_free(cursor_t *cursor)
{
    ASSERT(cursor != NULL);
    ASSERT(cursor->crs != NULL);
    [cursor->crs release];
    free(cursor);
}
 
void
cursor_make_current(cursor_t *cursor)
{
    ASSERT(cursor != NULL);
    ASSERT(cursor->crs != NULL);
    [cursor->crs set];
}