1 /* See LICENSE file for copyright and license details. */ |
1 /* See LICENSE file for copyright and license details. |
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2 * |
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3 * dynamic window manager is designed like any other X client as well. It is |
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4 * driven through handling X events. In contrast to other X clients, a window |
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5 * manager selects for SubstructureRedirectMask on the root window, to receive |
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6 * events about window (dis-)appearance. Only one X connection at a time is |
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7 * allowed to select for this event mask. |
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8 * |
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9 * Calls to fetch an X event from the event queue are blocking. Due reading |
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10 * status text from standard input, a select()-driven main loop has been |
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11 * implemented which selects for reads on the X connection and STDIN_FILENO to |
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12 * handle all data smoothly. The event handlers of dwm are organized in an |
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13 * array which is accessed whenever a new event has been fetched. This allows |
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14 * event dispatching in O(1) time. |
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15 * |
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16 * Each child of the root window is called a client, except windows which have |
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17 * set the override_redirect flag. Clients are organized in a global |
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18 * doubly-linked client list, the focus history is remembered through a global |
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19 * stack list. Each client contains an array of Bools of the same size as the |
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20 * global tags array to indicate the tags of a client. For each client dwm |
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21 * creates a small title window, which is resized whenever the (_NET_)WM_NAME |
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22 * properties are updated or the client is moved/resized. |
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23 * |
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24 * Keys and tagging rules are organized as arrays and defined in the config.h |
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25 * file. These arrays are kept static in event.o and tag.o respectively, |
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26 * because no other part of dwm needs access to them. The current layout is |
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27 * represented by the lt pointer. |
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28 * |
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29 * To understand everything else, start reading main(). |
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30 */ |
2 #include <errno.h> |
31 #include <errno.h> |
3 #include <locale.h> |
32 #include <locale.h> |
4 #include <regex.h> |
33 #include <regex.h> |
5 #include <stdarg.h> |
34 #include <stdarg.h> |
6 #include <stdio.h> |
35 #include <stdio.h> |