Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11clipboard.c @ 5004:0c72ae7b7cb2
Added native atomic operations for Windows, Mac OS X, and gcc compiler intrinsics.
Changed the CAS return value to bool, so it's efficient with OSAtomicCompareAndSwap32Barrier()
Added an atomic test adapted from code by Michael Davidsaver
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 16 Jan 2011 15:16:39 -0800 (2011-01-16) |
| parents | f18bc9935507 |
| children | 58265e606e4e |
| rev | line source |
|---|---|
| 4508 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 3 Copyright (C) 1997-2010 Sam Lantinga | |
| 4 | |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Lesser General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2.1 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Lesser General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Lesser General Public | |
| 16 License along with this library; if not, write to the Free Software | |
| 17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 18 | |
| 19 Sam Lantinga | |
| 20 slouken@libsdl.org | |
| 21 */ | |
| 22 #include "SDL_config.h" | |
| 23 | |
| 24 #include <limits.h> /* For INT_MAX */ | |
| 25 | |
| 26 #include "SDL_events.h" | |
| 27 #include "SDL_x11video.h" | |
| 28 | |
| 29 | |
|
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Made it possible to switch the text format in one place
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30 /* If you don't support UTF-8, you might use XA_STRING here */ |
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Use a better switch for the clipboard property format
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31 #ifdef X_HAVE_UTF8_STRING |
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32 #define TEXT_FORMAT XInternAtom(display, "UTF8_STRING", False) |
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parents:
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33 #else |
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8e91c3947210
Made it possible to switch the text format in one place
Sam Lantinga <slouken@libsdl.org>
parents:
4508
diff
changeset
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34 #define TEXT_FORMAT XA_STRING |
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8e91c3947210
Made it possible to switch the text format in one place
Sam Lantinga <slouken@libsdl.org>
parents:
4508
diff
changeset
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35 #endif |
|
8e91c3947210
Made it possible to switch the text format in one place
Sam Lantinga <slouken@libsdl.org>
parents:
4508
diff
changeset
|
36 |
| 4508 | 37 /* Get any application owned window handle for clipboard association */ |
| 38 static Window | |
| 39 GetWindow(_THIS) | |
| 40 { | |
| 41 SDL_VideoDisplay *display; | |
| 42 SDL_Window *window; | |
| 43 | |
| 44 display = _this->displays; | |
| 45 if (display) { | |
| 46 window = display->windows; | |
| 47 if (window) { | |
| 48 return ((SDL_WindowData *) window->driverdata)->xwindow; | |
| 49 } | |
| 50 } | |
| 51 return None; | |
| 52 } | |
| 53 | |
| 54 int | |
| 55 X11_SetClipboardText(_THIS, const char *text) | |
| 56 { | |
| 57 Display *display = ((SDL_VideoData *) _this->driverdata)->display; | |
| 58 Atom format; | |
| 59 Window window; | |
| 60 | |
| 61 /* Get the SDL window that will own the selection */ | |
| 62 window = GetWindow(_this); | |
| 63 if (window == None) { | |
| 64 SDL_SetError("Couldn't find a window to own the selection"); | |
| 65 return -1; | |
| 66 } | |
| 67 | |
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Made it possible to switch the text format in one place
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parents:
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diff
changeset
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68 /* Save the selection on the root window */ |
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8e91c3947210
Made it possible to switch the text format in one place
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parents:
4508
diff
changeset
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69 format = TEXT_FORMAT; |
| 4508 | 70 XChangeProperty(display, DefaultRootWindow(display), |
| 71 XA_CUT_BUFFER0, format, 8, PropModeReplace, | |
| 72 (const unsigned char *)text, SDL_strlen(text)); | |
| 73 | |
| 74 if (XGetSelectionOwner(display, XA_PRIMARY) != window) { | |
| 75 XSetSelectionOwner(display, XA_PRIMARY, window, CurrentTime); | |
| 76 } | |
| 77 return 0; | |
| 78 } | |
| 79 | |
| 80 char * | |
| 81 X11_GetClipboardText(_THIS) | |
| 82 { | |
| 83 SDL_VideoData *videodata = (SDL_VideoData *) _this->driverdata; | |
| 84 Display *display = videodata->display; | |
| 85 Atom format; | |
| 86 Window window; | |
| 87 Window owner; | |
| 88 Atom selection; | |
| 89 Atom seln_type; | |
| 90 int seln_format; | |
| 91 unsigned long nbytes; | |
| 92 unsigned long overflow; | |
| 93 unsigned char *src; | |
| 94 char *text; | |
| 95 | |
| 96 text = NULL; | |
| 97 | |
|
4509
8e91c3947210
Made it possible to switch the text format in one place
Sam Lantinga <slouken@libsdl.org>
parents:
4508
diff
changeset
|
98 /* Get the window that holds the selection */ |
| 4508 | 99 window = GetWindow(_this); |
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4509
8e91c3947210
Made it possible to switch the text format in one place
Sam Lantinga <slouken@libsdl.org>
parents:
4508
diff
changeset
|
100 format = TEXT_FORMAT; |
| 4508 | 101 owner = XGetSelectionOwner(display, XA_PRIMARY); |
| 102 if ((owner == None) || (owner == window)) { | |
| 103 owner = DefaultRootWindow(display); | |
| 104 selection = XA_CUT_BUFFER0; | |
| 105 } else { | |
| 106 /* Request that the selection owner copy the data to our window */ | |
| 107 owner = window; | |
| 108 selection = XInternAtom(display, "SDL_SELECTION", False); | |
| 109 XConvertSelection(display, XA_PRIMARY, format, selection, owner, | |
| 110 CurrentTime); | |
| 111 | |
| 112 /* FIXME: Should we have a timeout here? */ | |
| 113 videodata->selection_waiting = SDL_TRUE; | |
| 114 while (videodata->selection_waiting) { | |
| 115 SDL_PumpEvents(); | |
| 116 } | |
| 117 } | |
| 118 | |
| 119 if (XGetWindowProperty(display, owner, selection, 0, INT_MAX/4, False, | |
| 120 format, &seln_type, &seln_format, &nbytes, &overflow, &src) | |
| 121 == Success) { | |
| 122 if (seln_type == format) { | |
| 123 text = (char *)SDL_malloc(nbytes+1); | |
| 124 if (text) { | |
| 125 SDL_memcpy(text, src, nbytes); | |
| 126 text[nbytes] = '\0'; | |
| 127 } | |
| 128 } | |
| 129 XFree(src); | |
| 130 } | |
| 131 | |
| 132 if (!text) { | |
| 133 text = SDL_strdup(""); | |
| 134 } | |
| 135 return text; | |
| 136 } | |
| 137 | |
| 138 SDL_bool | |
| 139 X11_HasClipboardText(_THIS) | |
| 140 { | |
| 141 /* Not an easy way to tell with X11, as far as I know... */ | |
| 142 char *text; | |
| 143 SDL_bool retval; | |
| 144 | |
| 145 text = X11_GetClipboardText(_this); | |
| 146 if (*text) { | |
| 147 retval = SDL_TRUE; | |
| 148 } else { | |
| 149 retval = SDL_FALSE; | |
| 150 } | |
| 151 SDL_free(text); | |
| 152 | |
| 153 return retval; | |
| 154 } | |
| 155 | |
| 156 /* vi: set ts=4 sw=4 expandtab: */ |