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SDL_uikitclipboard.m (3055B)

      1 /*
      2   Simple DirectMedia Layer
      3   Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
      4 
      5   This software is provided 'as-is', without any express or implied
      6   warranty.  In no event will the authors be held liable for any damages
      7   arising from the use of this software.
      8 
      9   Permission is granted to anyone to use this software for any purpose,
     10   including commercial applications, and to alter it and redistribute it
     11   freely, subject to the following restrictions:
     12 
     13   1. The origin of this software must not be misrepresented; you must not
     14      claim that you wrote the original software. If you use this software
     15      in a product, an acknowledgment in the product documentation would be
     16      appreciated but is not required.
     17   2. Altered source versions must be plainly marked as such, and must not be
     18      misrepresented as being the original software.
     19   3. This notice may not be removed or altered from any source distribution.
     20 */
     21 #include "../../SDL_internal.h"
     22 
     23 #if SDL_VIDEO_DRIVER_UIKIT
     24 
     25 #include "SDL_uikitvideo.h"
     26 #include "../../events/SDL_clipboardevents_c.h"
     27 
     28 #import <UIKit/UIPasteboard.h>
     29 
     30 int
     31 UIKit_SetClipboardText(_THIS, const char *text)
     32 {
     33 #if TARGET_OS_TV
     34     return SDL_SetError("The clipboard is not available on tvOS");
     35 #else
     36     @autoreleasepool {
     37         [UIPasteboard generalPasteboard].string = @(text);
     38         return 0;
     39     }
     40 #endif
     41 }
     42 
     43 char *
     44 UIKit_GetClipboardText(_THIS)
     45 {
     46 #if TARGET_OS_TV
     47     return SDL_strdup(""); // Unsupported.
     48 #else
     49     @autoreleasepool {
     50         UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
     51         NSString *string = pasteboard.string;
     52 
     53         if (string != nil) {
     54             return SDL_strdup(string.UTF8String);
     55         } else {
     56             return SDL_strdup("");
     57         }
     58     }
     59 #endif
     60 }
     61 
     62 SDL_bool
     63 UIKit_HasClipboardText(_THIS)
     64 {
     65     @autoreleasepool {
     66 #if !TARGET_OS_TV
     67         if ([UIPasteboard generalPasteboard].string != nil) {
     68             return SDL_TRUE;
     69         }
     70 #endif
     71         return SDL_FALSE;
     72     }
     73 }
     74 
     75 void
     76 UIKit_InitClipboard(_THIS)
     77 {
     78 #if !TARGET_OS_TV
     79     @autoreleasepool {
     80         SDL_VideoData *data = (__bridge SDL_VideoData *) _this->driverdata;
     81         NSNotificationCenter *center = [NSNotificationCenter defaultCenter];
     82 
     83         id observer = [center addObserverForName:UIPasteboardChangedNotification
     84                                          object:nil
     85                                           queue:nil
     86                                      usingBlock:^(NSNotification *note) {
     87                                          SDL_SendClipboardUpdate();
     88                                      }];
     89 
     90         data.pasteboardObserver = observer;
     91     }
     92 #endif
     93 }
     94 
     95 void
     96 UIKit_QuitClipboard(_THIS)
     97 {
     98     @autoreleasepool {
     99         SDL_VideoData *data = (__bridge SDL_VideoData *) _this->driverdata;
    100 
    101         if (data.pasteboardObserver != nil) {
    102             [[NSNotificationCenter defaultCenter] removeObserver:data.pasteboardObserver];
    103         }
    104 
    105         data.pasteboardObserver = nil;
    106     }
    107 }
    108 
    109 #endif /* SDL_VIDEO_DRIVER_UIKIT */
    110 
    111 /* vi: set ts=4 sw=4 expandtab: */