clipboard/clipboard_darwin.m

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// Copyright 2021 The golang.design Initiative Authors.
// All rights reserved. Use of this source code is governed
// by a MIT license that can be found in the LICENSE file.
//
// Written by Changkun Ou <changkun.de>
//go:build darwin && !ios
// Interact with NSPasteboard using Objective-C
// https://developer.apple.com/documentation/appkit/nspasteboard?language=objc
#import <Foundation/Foundation.h>
#import <Cocoa/Cocoa.h>
unsigned int clipboard_read_string(void **out) {
NSPasteboard * pasteboard = [NSPasteboard generalPasteboard];
NSData *data = [pasteboard dataForType:NSPasteboardTypeString];
if (data == nil) {
return 0;
}
NSUInteger siz = [data length];
*out = malloc(siz);
[data getBytes: *out length: siz];
return siz;
}
unsigned int clipboard_read_image(void **out) {
NSPasteboard * pasteboard = [NSPasteboard generalPasteboard];
NSData *data = [pasteboard dataForType:NSPasteboardTypePNG];
if (data == nil) {
return 0;
}
NSUInteger siz = [data length];
*out = malloc(siz);
[data getBytes: *out length: siz];
return siz;
}
int clipboard_write_string(const void *bytes, NSInteger n) {
NSPasteboard *pasteboard = [NSPasteboard generalPasteboard];
NSData *data = [NSData dataWithBytes: bytes length: n];
[pasteboard clearContents];
BOOL ok = [pasteboard setData: data forType:NSPasteboardTypeString];
if (!ok) {
return -1;
}
return 0;
}
int clipboard_write_image(const void *bytes, NSInteger n) {
NSPasteboard *pasteboard = [NSPasteboard generalPasteboard];
NSData *data = [NSData dataWithBytes: bytes length: n];
[pasteboard clearContents];
BOOL ok = [pasteboard setData: data forType:NSPasteboardTypePNG];
if (!ok) {
return -1;
}
return 0;
}
NSInteger clipboard_change_count() {
return [[NSPasteboard generalPasteboard] changeCount];
}