This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
SDL_x11clipboard.c
156 lines (130 loc) · 4.15 KB
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2011 Sam Lantinga
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
24
25
#if SDL_VIDEO_DRIVER_X11
26
27
28
29
30
31
#include <limits.h> /* For INT_MAX */
#include "SDL_events.h"
#include "SDL_x11video.h"
32
/* If you don't support UTF-8, you might use XA_STRING here */
33
#ifdef X_HAVE_UTF8_STRING
34
35
36
37
38
#define TEXT_FORMAT XInternAtom(display, "UTF8_STRING", False)
#else
#define TEXT_FORMAT XA_STRING
#endif
39
40
41
42
43
44
/* Get any application owned window handle for clipboard association */
static Window
GetWindow(_THIS)
{
SDL_Window *window;
45
46
47
window = _this->windows;
if (window) {
return ((SDL_WindowData *) window->driverdata)->xwindow;
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
}
return None;
}
int
X11_SetClipboardText(_THIS, const char *text)
{
Display *display = ((SDL_VideoData *) _this->driverdata)->display;
Atom format;
Window window;
/* Get the SDL window that will own the selection */
window = GetWindow(_this);
if (window == None) {
SDL_SetError("Couldn't find a window to own the selection");
return -1;
}
66
67
/* Save the selection on the root window */
format = TEXT_FORMAT;
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
XChangeProperty(display, DefaultRootWindow(display),
XA_CUT_BUFFER0, format, 8, PropModeReplace,
(const unsigned char *)text, SDL_strlen(text));
if (XGetSelectionOwner(display, XA_PRIMARY) != window) {
XSetSelectionOwner(display, XA_PRIMARY, window, CurrentTime);
}
return 0;
}
char *
X11_GetClipboardText(_THIS)
{
SDL_VideoData *videodata = (SDL_VideoData *) _this->driverdata;
Display *display = videodata->display;
Atom format;
Window window;
Window owner;
Atom selection;
Atom seln_type;
int seln_format;
unsigned long nbytes;
unsigned long overflow;
unsigned char *src;
char *text;
text = NULL;
96
/* Get the window that holds the selection */
97
window = GetWindow(_this);
98
format = TEXT_FORMAT;
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
owner = XGetSelectionOwner(display, XA_PRIMARY);
if ((owner == None) || (owner == window)) {
owner = DefaultRootWindow(display);
selection = XA_CUT_BUFFER0;
} else {
/* Request that the selection owner copy the data to our window */
owner = window;
selection = XInternAtom(display, "SDL_SELECTION", False);
XConvertSelection(display, XA_PRIMARY, format, selection, owner,
CurrentTime);
/* FIXME: Should we have a timeout here? */
videodata->selection_waiting = SDL_TRUE;
while (videodata->selection_waiting) {
SDL_PumpEvents();
}
}
if (XGetWindowProperty(display, owner, selection, 0, INT_MAX/4, False,
format, &seln_type, &seln_format, &nbytes, &overflow, &src)
== Success) {
if (seln_type == format) {
text = (char *)SDL_malloc(nbytes+1);
if (text) {
SDL_memcpy(text, src, nbytes);
text[nbytes] = '\0';
}
}
XFree(src);
}
if (!text) {
text = SDL_strdup("");
}
return text;
}
SDL_bool
X11_HasClipboardText(_THIS)
{
/* Not an easy way to tell with X11, as far as I know... */
char *text;
SDL_bool retval;
text = X11_GetClipboardText(_this);
if (*text) {
retval = SDL_TRUE;
} else {
retval = SDL_FALSE;
}
SDL_free(text);
return retval;
}
154
155
#endif /* SDL_VIDEO_DRIVER_X11 */
156
/* vi: set ts=4 sw=4 expandtab: */