This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_x11clipboard.c
1
2
/*
Simple DirectMedia Layer
3
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_VIDEO_DRIVER_X11
#include <limits.h> /* For INT_MAX */
#include "SDL_events.h"
#include "SDL_x11video.h"
29
#include "SDL_timer.h"
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
/* If you don't support UTF-8, you might use XA_STRING here */
#ifdef X_HAVE_UTF8_STRING
#define TEXT_FORMAT XInternAtom(display, "UTF8_STRING", False)
#else
#define TEXT_FORMAT XA_STRING
#endif
/* Get any application owned window handle for clipboard association */
static Window
GetWindow(_THIS)
{
SDL_Window *window;
window = _this->windows;
if (window) {
return ((SDL_WindowData *) window->driverdata)->xwindow;
}
return None;
}
int
X11_SetClipboardText(_THIS, const char *text)
{
Display *display = ((SDL_VideoData *) _this->driverdata)->display;
Atom format;
Window window;
Atom XA_CLIPBOARD = XInternAtom(display, "CLIPBOARD", 0);
/* Get the SDL window that will own the selection */
window = GetWindow(_this);
if (window == None) {
63
return SDL_SetError("Couldn't find a window to own the selection");
64
65
66
67
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
96
97
}
/* Save the selection on the root window */
format = TEXT_FORMAT;
XChangeProperty(display, DefaultRootWindow(display),
XA_CUT_BUFFER0, format, 8, PropModeReplace,
(const unsigned char *)text, SDL_strlen(text));
if (XA_CLIPBOARD != None &&
XGetSelectionOwner(display, XA_CLIPBOARD) != window) {
XSetSelectionOwner(display, XA_CLIPBOARD, window, CurrentTime);
}
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;
98
99
Uint32 waitStart;
Uint32 waitElapsed;
100
101
102
Atom XA_CLIPBOARD = XInternAtom(display, "CLIPBOARD", 0);
if (XA_CLIPBOARD == None) {
SDL_SetError("Couldn't access X clipboard");
103
return SDL_strdup("");
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
}
text = NULL;
/* Get the window that holds the selection */
window = GetWindow(_this);
format = TEXT_FORMAT;
owner = XGetSelectionOwner(display, XA_CLIPBOARD);
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_CLIPBOARD, format, selection, owner,
CurrentTime);
122
123
124
125
/* When using synergy on Linux and when data has been put in the clipboard
on the remote (Windows anyway) machine then selection_waiting may never
be set to False. Time out after a while. */
waitStart = SDL_GetTicks();
126
127
128
videodata->selection_waiting = SDL_TRUE;
while (videodata->selection_waiting) {
SDL_PumpEvents();
129
130
131
132
133
134
135
136
137
138
waitElapsed = SDL_GetTicks() - waitStart;
/* Wait one second for a clipboard response. */
if (waitElapsed > 1000) {
videodata->selection_waiting = SDL_FALSE;
SDL_SetError("Clipboard timeout");
/* We need to set the clipboard text so that next time we won't
timeout, otherwise we will hang on every call to this function. */
X11_SetClipboardText(_this, "");
return SDL_strdup("");
}
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
}
}
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("");
}
159
160
161
162
163
164
165
166
167
168
169
return text;
}
SDL_bool
X11_HasClipboardText(_THIS)
{
SDL_bool result = SDL_FALSE;
char *text = X11_GetClipboardText(_this);
if (text) {
result = (SDL_strlen(text)>0) ? SDL_TRUE : SDL_FALSE;
SDL_free(text);
171
172
173
174
175
176
return result;
}
#endif /* SDL_VIDEO_DRIVER_X11 */
/* vi: set ts=4 sw=4 expandtab: */