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annotate dep/animia/src/win/x11.cc @ 158:80d6b28eb29f

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dep/animia: fix most X11 stuff it looks like _NET_WM_PID isn't supported by MOST clients, or my code is wrong... core/filesystem: fix Linux config path handling on *nix
author Paper <mrpapersonic@gmail.com>
date Fri, 17 Nov 2023 02:07:33 -0500
parents 18c8eb5d1edc
children 54c5d80a737e
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1 #include "animia/win/x11.h"
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2 #include "animia/win.h"
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3 #include "animia.h"
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4
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5 #include <X11/Xlib.h>
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6 #include <X11/Xutil.h>
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7 #include <X11/Xatom.h> // XA_*
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8
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9 #include <cstdint>
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10 #include <string>
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11 #include <memory>
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12 #include <set>
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14 /* The code for this is very fugly because X11 uses lots of generic type names
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15 (i.e., Window, Display), so I have to use :: when defining vars to distinguish
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16 between Animia's types and X11's types */
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17
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18 namespace animia::internal::x11 {
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19
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20 /* should return UTF8_STRING or STRING */
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21 static bool GetWindowPropertyAsString(::Display* display, ::Window window, ::Atom atom, std::string& result, ::Atom reqtype = AnyPropertyType) {
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22 int format;
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23 unsigned long leftover_bytes, num_of_items;
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24 ::Atom type;
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25 unsigned char* data;
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26 if (!::XGetWindowProperty(display, window, atom, 0L, (~0L), False, reqtype,
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27 &type, &format, &num_of_items, &leftover_bytes, &data))
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28 return false;
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29
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30 result = std::string((char*)data, num_of_items);
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31
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32 return true;
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33 }
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34
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35 /* this should return CARDINAL, a 32-bit integer */
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36 static bool GetWindowPID(::Display* display, ::Window window, pid_t& result) {
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37 int format;
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38 unsigned long leftover_bytes, num_of_items;
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39 ::Atom atom = ::XInternAtom(display, "_NET_WM_PID", False), type;
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40 unsigned char* data;
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41
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42 if (!::XGetWindowProperty(display, window, atom, 0L, (~0L), False, XA_CARDINAL,
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43 &type, &format, &num_of_items, &leftover_bytes, &data))
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44 return false;
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45
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46 result = static_cast<pid_t>(*(uint32_t*)data);
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47
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48 return true;
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49 }
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50
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51 static bool FetchName(::Display* display, ::Window window, std::string& result) {
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52 /* TODO: Check if XInternAtom created None or not... */
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53 if (GetWindowPropertyAsString(display, window, ::XInternAtom(display, "_NET_WM_NAME", False),
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54 result, ::XInternAtom(display, "UTF8_STRING", False)))
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55 return true;
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56
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57 /* Fallback to XGetWMName() */
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58 XTextProperty text;
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59
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60 {
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61 int status = ::XGetWMName(display, window, &text);
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62 if (!status || !text.value || !text.nitems)
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63 return false;
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64 }
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65
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66 char** list;
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67
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68 {
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69 int count;
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70
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71 int status = ::XmbTextPropertyToTextList(display, &text, &list, &count);
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72 if (status < Success || !count || !*list)
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73 return false;
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74 }
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75
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76 ::XFree(text.value);
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77
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78 result = *list;
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79
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80 ::XFreeStringList(list);
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81
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82 return true;
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83 }
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84
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85 bool X11WinTools::EnumerateWindows(window_proc_t window_proc) {
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86 if (!window_proc)
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87 return false;
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88
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89 ::Display* display = ::XOpenDisplay(nullptr);
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90 ::Window root = DefaultRootWindow(display);
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91
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92 unsigned int num_windows = 0;
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93 ::Window* windows = nullptr;
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94
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95 {
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96 ::Window root_return;
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97 ::Window parent_return;
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98
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99 int status = ::XQueryTree(display, root, &root_return, &parent_return, &windows, &num_windows);
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100 if (status < Success)
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101 return false;
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102 }
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103
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104 for (long k = 0; k < num_windows; k++) {
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105 const ::Window window = windows[k];
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106
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107 Window win;
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108 win.id = window;
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109 {
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110 ::XClassHint* hint = ::XAllocClassHint();
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111 if (::XGetClassHint(display, window, hint)) {
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112 win.class_name = hint->res_class;
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113 ::XFree(hint);
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114 }
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115 }
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116 FetchName(display, windows[k], win.text);
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117
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118 Process proc;
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119 GetWindowPID(display, window, proc.pid);
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120
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121 if (!window_proc(proc, win))
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122 return false;
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123 }
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124
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125 ::XFree(windows);
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126
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127 return true;
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128 }
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130 }