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annotate dep/animone/src/win/x11.cc @ 335:5098387a3a46

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kitsu: remove unused constants, fix token expiration calculation
author Paper <paper@paper.us.eu.org>
date Wed, 19 Jun 2024 06:11:38 -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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Paper <paper@paper.us.eu.org>
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diff changeset
144 if (Atom_WM_STATE == XCB_ATOM_NONE)
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Paper <paper@paper.us.eu.org>
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diff changeset
145 return success;
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
146
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Paper <paper@paper.us.eu.org>
parents: 283
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147 std::vector<xcb_query_tree_cookie_t> cookies;
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Paper <paper@paper.us.eu.org>
parents: 283
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148 cookies.reserve(roots.size());
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
149
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
150 for (const auto& root : roots)
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
151 cookies.push_back(::xcb_query_tree(connection, root));
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
152
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
153 for (const auto& cookie : cookies)
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Paper <paper@paper.us.eu.org>
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diff changeset
154 success |= WalkWindows(connection, 0, Atom_WM_STATE, roots.data(), roots.size(), result);
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
155
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
156 return success;
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
157 }
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
158
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Paper <paper@paper.us.eu.org>
parents: 283
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159 bool EnumerateWindows(window_proc_t window_proc) {
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Paper <paper@paper.us.eu.org>
parents: 283
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160 if (!window_proc)
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Paper <paper@paper.us.eu.org>
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diff changeset
161 return false;
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Paper <paper@paper.us.eu.org>
parents: 283
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162
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parents: 283
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163 xcb_connection_t* connection = ::xcb_connect(NULL, NULL);
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parents: 283
diff changeset
164 if (xcb_connection_has_error(connection))
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Paper <paper@paper.us.eu.org>
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165 return false;
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Paper <paper@paper.us.eu.org>
parents: 283
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166
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167 std::set<xcb_window_t> windows;
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Paper <paper@paper.us.eu.org>
parents: 283
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168 {
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Paper <paper@paper.us.eu.org>
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169 std::vector<xcb_window_t> roots;
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Paper <paper@paper.us.eu.org>
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170 {
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
171 xcb_screen_iterator_t iter = ::xcb_setup_roots_iterator(::xcb_get_setup(connection));
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
172 for (; iter.rem; ::xcb_screen_next(&iter))
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
173 roots.push_back(iter.data->root);
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Paper <paper@paper.us.eu.org>
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174 }
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Paper <paper@paper.us.eu.org>
parents: 283
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175
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Paper <paper@paper.us.eu.org>
parents: 283
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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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Paper <paper@paper.us.eu.org>
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180 struct WindowCookies {
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Paper <paper@paper.us.eu.org>
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181 xcb_window_t window;
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Paper <paper@paper.us.eu.org>
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182 xcb_get_property_cookie_t class_property_cookie;
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Paper <paper@paper.us.eu.org>
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183 xcb_get_property_cookie_t name_property_cookie;
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Paper <paper@paper.us.eu.org>
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184 xcb_res_query_client_ids_cookie_t pid_property_cookie;
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185 };
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Paper <paper@paper.us.eu.org>
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186
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Paper <paper@paper.us.eu.org>
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187 std::vector<WindowCookies> window_cookies;
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
188 window_cookies.reserve(windows.size());
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
189
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
190 for (const auto& window : windows) {
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
191 xcb_res_client_id_spec_t spec = {.client = window, .mask = XCB_RES_CLIENT_ID_MASK_LOCAL_CLIENT_PID};
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
192
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
193 WindowCookies window_cookie = {
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Paper <paper@paper.us.eu.org>
parents: 283
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>
parents: 283
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
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
198 window_cookies.push_back(window_cookie);
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
199 }
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
200
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
201 for (const auto& window_cookie : window_cookies) {
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
202 Window win = {0};
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
203 win.id = window_cookie.window;
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
204 {
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
205 /* Class name */
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
206 std::unique_ptr<xcb_get_property_reply_t> reply(
b1f625b0227c *: convert all files CRLF -> LF
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>
parents: 283
diff changeset
209 if (reply && reply->format == 8) {
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Paper <paper@paper.us.eu.org>
parents: 283
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
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
213 int instance_len = str_nlen(data, data_len);
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
214 const char* class_name = data + instance_len + 1;
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
215
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
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 }
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
219 {
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
220 /* Title text */
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Paper <paper@paper.us.eu.org>
parents: 283
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));
b1f625b0227c *: convert all files CRLF -> LF
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>
parents: 283
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>
parents: 283
diff changeset
232 {
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
233 /* PID */
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
234 std::unique_ptr<xcb_res_query_client_ids_reply_t> reply(
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
235 ::xcb_res_query_client_ids_reply(connection, window_cookie.pid_property_cookie, NULL));
b1f625b0227c *: convert all files CRLF -> LF
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>
parents: 283
diff changeset
238 xcb_res_client_id_value_iterator_t it = ::xcb_res_query_client_ids_ids_iterator(reply.get());
b1f625b0227c *: convert all files CRLF -> LF
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) {
b1f625b0227c *: convert all files CRLF -> LF
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>
parents: 283
diff changeset
251 return false;
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
252 }
b1f625b0227c *: convert all files CRLF -> LF
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);
b1f625b0227c *: convert all files CRLF -> LF
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;
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
258 }
b1f625b0227c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
259
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Paper <paper@paper.us.eu.org>
parents: 283
diff changeset
260 } // namespace animone::internal::x11