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annotate dep/animone/src/win/x11.cc @ 327:b5d6c27c308f

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anime: refactor Anime::SeriesSeason to Season class ToLocalString has also been altered to take in both season and year because lots of locales actually treat formatting seasons differently! most notably is Russian which adds a suffix at the end to notate seasons(??)
author Paper <paper@paper.us.eu.org>
date Thu, 13 Jun 2024 01:49:18 -0400
parents a4257370de16
children d260549151d6
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a4257370de16 dep/animone: prepare for v1.0 release; it should be ready by now
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1 /*
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2 * win/x11.c: support for X11 using XCB
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3 *
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4 * some things might be wrong here due to
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5 * having to use recursive logic, but whatever
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6 */
301
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7 #include "animone/win/x11.h"
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8 #include "animone.h"
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9 #include "animone/fd.h" /* GetProcessName() */
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10 #include "animone/win.h"
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11
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12 #include <xcb/res.h>
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13 #include <xcb/xcb.h>
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14
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15 #include <climits>
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16 #include <cstdint>
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17 #include <cstring>
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18 #include <set>
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19 #include <string>
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20 #include <memory>
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21
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22 #include <chrono>
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23
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24 #include <iostream>
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25
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26 static size_t str_nlen(const char* s, size_t len) {
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27 size_t i = 0;
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28 for (; i < len && s[i]; i++)
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29 ;
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30 return i;
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31 }
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32
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33 namespace animone::internal::x11 {
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34
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35 static bool GetAllTopLevelWindowsEWMH(xcb_connection_t* connection, const std::vector<xcb_window_t>& roots,
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36 std::set<xcb_window_t>& result) {
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37 const xcb_atom_t Atom__NET_CLIENT_LIST = [connection] {
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38 static constexpr std::string_view name = "_NET_CLIENT_LIST";
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39 xcb_intern_atom_cookie_t cookie = ::xcb_intern_atom(connection, true, name.size(), name.data());
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40 std::unique_ptr<xcb_intern_atom_reply_t> reply(::xcb_intern_atom_reply(connection, cookie, NULL));
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41
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42 xcb_atom_t atom = reply->atom;
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43
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44 return atom;
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45 }();
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46 if (Atom__NET_CLIENT_LIST == XCB_ATOM_NONE)
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47 return false; // BTFO
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48
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49 bool success = false;
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50
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51 std::vector<xcb_get_property_cookie_t> cookies;
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52 cookies.reserve(roots.size());
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53
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54 for (const auto& root : roots)
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55 cookies.push_back(::xcb_get_property(connection, 0, root, Atom__NET_CLIENT_LIST, XCB_ATOM_ANY, 0L, UINT_MAX));
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56
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57 for (const auto& cookie : cookies) {
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58 std::unique_ptr<xcb_get_property_reply_t> reply(::xcb_get_property_reply(connection, cookie, NULL));
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59
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60 if (reply) {
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61 xcb_window_t* value = reinterpret_cast<xcb_window_t*>(::xcb_get_property_value(reply.get()));
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62 int len = ::xcb_get_property_value_length(reply.get());
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63
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64 for (size_t i = 0; i < len; i++)
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65 result.insert(value[i]);
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66
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67 success |= true;
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68 }
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69 }
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70
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71 return success;
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72 }
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73
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74 /* This is called on every window. What this does is:
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75 * 1. Gets the tree of children
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76 * 2. Searches all children recursively for a WM_STATE property
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77 * 3. If that failed... return the original window
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78 */
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79 static bool WalkWindows(xcb_connection_t* connection, int depth, xcb_atom_t Atom_WM_STATE, const xcb_window_t* windows,
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80 int windows_len, std::set<xcb_window_t>& result) {
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81 /* The depth we should start returning at. */
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82 static constexpr int CUTOFF = 1;
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83
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84 bool success = false;
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85
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86 std::vector<xcb_query_tree_cookie_t> cookies;
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87 cookies.reserve(windows_len);
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88
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89 for (int i = 0; i < windows_len; i++)
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90 cookies.push_back(::xcb_query_tree(connection, windows[i]));
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91
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92 for (const auto& cookie : cookies) {
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93 std::unique_ptr<xcb_query_tree_reply_t> query_tree_reply(::xcb_query_tree_reply(connection, cookie, NULL));
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94
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95 xcb_window_t* tree_children = ::xcb_query_tree_children(query_tree_reply.get());
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96 int tree_children_len = ::xcb_query_tree_children_length(query_tree_reply.get());
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97
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98 std::vector<xcb_get_property_cookie_t> state_property_cookies;
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99 state_property_cookies.reserve(tree_children_len);
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100
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101 for (int i = 0; i < tree_children_len; i++)
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102 state_property_cookies.push_back(
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103 ::xcb_get_property(connection, 0, tree_children[i], Atom_WM_STATE, Atom_WM_STATE, 0, 0));
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104
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105 for (int i = 0; i < tree_children_len; i++) {
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106 std::unique_ptr<xcb_get_property_reply_t> get_property_reply(
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107 ::xcb_get_property_reply(connection, state_property_cookies[i], NULL));
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108
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109 /* X11 is unfriendly here. what this means is "did the property exist?" */
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110 if (get_property_reply->format || get_property_reply->type || get_property_reply->length) {
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111 result.insert(tree_children[i]);
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112 if (depth >= CUTOFF)
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113 return true;
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114
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115 success |= true;
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116 continue;
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117 }
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118 }
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119
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120 if (WalkWindows(connection, depth + 1, Atom_WM_STATE, tree_children, tree_children_len, result)) {
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121 success |= true;
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122 if (depth >= CUTOFF)
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123 return true;
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124 continue;
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125 }
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126 }
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127
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128 return success;
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129 }
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130
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131 static bool GetAllTopLevelWindowsICCCM(xcb_connection_t* connection, const std::vector<xcb_window_t>& roots,
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132 std::set<xcb_window_t>& result) {
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133 bool success = false;
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134
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135 xcb_atom_t Atom_WM_STATE = [connection] {
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136 static constexpr std::string_view name = "WM_STATE";
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137 xcb_intern_atom_cookie_t cookie = ::xcb_intern_atom(connection, true, name.size(), name.data());
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138 xcb_intern_atom_reply_t* reply = ::xcb_intern_atom_reply(connection, cookie, NULL);
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139
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140 xcb_atom_t atom = reply->atom;
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141 free(reply);
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142 return atom;
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143 }();
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144 if (Atom_WM_STATE == XCB_ATOM_NONE)
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145 return success;
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146
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147 std::vector<xcb_query_tree_cookie_t> cookies;
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148 cookies.reserve(roots.size());
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149
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150 for (const auto& root : roots)
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151 cookies.push_back(::xcb_query_tree(connection, root));
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152
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153 for (const auto& cookie : cookies)
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154 success |= WalkWindows(connection, 0, Atom_WM_STATE, roots.data(), roots.size(), result);
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155
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156 return success;
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157 }
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158
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159 bool EnumerateWindows(window_proc_t window_proc) {
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160 if (!window_proc)
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161 return false;
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162
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163 xcb_connection_t* connection = ::xcb_connect(NULL, NULL);
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164 if (xcb_connection_has_error(connection))
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165 return false;
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166
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167 std::set<xcb_window_t> windows;
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168 {
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169 std::vector<xcb_window_t> roots;
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170 {
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171 xcb_screen_iterator_t iter = ::xcb_setup_roots_iterator(::xcb_get_setup(connection));
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172 for (; iter.rem; ::xcb_screen_next(&iter))
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173 roots.push_back(iter.data->root);
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174 }
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175
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176 if (!GetAllTopLevelWindowsEWMH(connection, roots, windows))
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177 GetAllTopLevelWindowsICCCM(connection, roots, windows);
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178 }
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179
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180 struct WindowCookies {
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181 xcb_window_t window;
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182 xcb_get_property_cookie_t class_property_cookie;
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183 xcb_get_property_cookie_t name_property_cookie;
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184 xcb_res_query_client_ids_cookie_t pid_property_cookie;
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185 };
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186
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187 std::vector<WindowCookies> window_cookies;
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188 window_cookies.reserve(windows.size());
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189
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190 for (const auto& window : windows) {
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191 xcb_res_client_id_spec_t spec = {.client = window, .mask = XCB_RES_CLIENT_ID_MASK_LOCAL_CLIENT_PID};
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parents: 283
diff changeset
192
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Paper <paper@paper.us.eu.org>
parents: 283
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193 WindowCookies window_cookie = {
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diff changeset
194 window, ::xcb_get_property(connection, 0, window, XCB_ATOM_WM_CLASS, XCB_ATOM_STRING, 0L, 2048L),
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Paper <paper@paper.us.eu.org>
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diff changeset
195 ::xcb_get_property(connection, 0, window, XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 0L, UINT_MAX),
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
196 ::xcb_res_query_client_ids(connection, 1, &spec)};
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
197
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diff changeset
198 window_cookies.push_back(window_cookie);
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Paper <paper@paper.us.eu.org>
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diff changeset
199 }
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200
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Paper <paper@paper.us.eu.org>
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201 for (const auto& window_cookie : window_cookies) {
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Paper <paper@paper.us.eu.org>
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diff changeset
202 Window win = {0};
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Paper <paper@paper.us.eu.org>
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203 win.id = window_cookie.window;
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Paper <paper@paper.us.eu.org>
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204 {
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Paper <paper@paper.us.eu.org>
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205 /* Class name */
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206 std::unique_ptr<xcb_get_property_reply_t> reply(
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
207 ::xcb_get_property_reply(connection, window_cookie.class_property_cookie, NULL));
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
208
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
209 if (reply && reply->format == 8) {
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Paper <paper@paper.us.eu.org>
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diff changeset
210 const char* data = reinterpret_cast<const char*>(::xcb_get_property_value(reply.get()));
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
211 const int data_len = ::xcb_get_property_value_length(reply.get());
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
212
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Paper <paper@paper.us.eu.org>
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diff changeset
213 int instance_len = str_nlen(data, data_len);
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Paper <paper@paper.us.eu.org>
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diff changeset
214 const char* class_name = data + instance_len + 1;
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Paper <paper@paper.us.eu.org>
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diff changeset
215
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
216 win.class_name = std::string(class_name, str_nlen(class_name, data_len - (instance_len + 1)));
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
217 }
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
218 }
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
219 {
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
220 /* Title text */
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Paper <paper@paper.us.eu.org>
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diff changeset
221 std::unique_ptr<xcb_get_property_reply_t> reply(
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
222 ::xcb_get_property_reply(connection, window_cookie.name_property_cookie, NULL));
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
223
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
224 if (reply) {
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Paper <paper@paper.us.eu.org>
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diff changeset
225 const char* data = reinterpret_cast<const char*>(::xcb_get_property_value(reply.get()));
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
226 int len = ::xcb_get_property_value_length(reply.get());
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
227
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
228 win.text = std::string(data, len);
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
229 }
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
230 }
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
231 Process proc = {0};
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Paper <paper@paper.us.eu.org>
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diff changeset
232 {
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Paper <paper@paper.us.eu.org>
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diff changeset
233 /* PID */
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Paper <paper@paper.us.eu.org>
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diff changeset
234 std::unique_ptr<xcb_res_query_client_ids_reply_t> reply(
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Paper <paper@paper.us.eu.org>
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diff changeset
235 ::xcb_res_query_client_ids_reply(connection, window_cookie.pid_property_cookie, NULL));
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
236
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
237 if (reply) {
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Paper <paper@paper.us.eu.org>
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diff changeset
238 xcb_res_client_id_value_iterator_t it = ::xcb_res_query_client_ids_ids_iterator(reply.get());
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
239 for (; it.rem; ::xcb_res_client_id_value_next(&it)) {
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
240 if (it.data->spec.mask & XCB_RES_CLIENT_ID_MASK_LOCAL_CLIENT_PID) {
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
241 proc.pid = *::xcb_res_client_id_value_value(it.data);
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
242 GetProcessName(proc.pid, proc.name); /* fill this in if we can */
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
243 break;
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
244 }
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
245 }
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
246 }
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
247 }
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
248
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
249 if (!window_proc(proc, win)) {
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
250 ::xcb_disconnect(connection);
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Paper <paper@paper.us.eu.org>
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diff changeset
251 return false;
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
252 }
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
253 }
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
254
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
255 ::xcb_disconnect(connection);
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
256
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
257 return true;
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
258 }
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Paper <paper@paper.us.eu.org>
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diff changeset
259
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Paper <paper@paper.us.eu.org>
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diff changeset
260 } // namespace animone::internal::x11