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