754 lines
22 KiB
C
754 lines
22 KiB
C
/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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* © 2009 Michael Stapelberg and contributors (see also: LICENSE)
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*
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* include/data.h: This file defines all data structures used by i3
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*
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*/
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#pragma once
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#include "libi3.h"
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#define SN_API_NOT_YET_FROZEN 1
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#include <libsn/sn-launcher.h>
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#include <xcb/randr.h>
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#include <stdbool.h>
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#include <pcre.h>
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#include <sys/time.h>
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#include "queue.h"
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/*
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* To get the big concept: There are helper structures like struct
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* Workspace_Assignment. Every struct which is also defined as type (see
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* forward definitions) is considered to be a major structure, thus important.
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*
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* The following things are all stored in a 'Con', from very high level (the
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* biggest Cons) to very small (a single window):
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*
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* 1) X11 root window (as big as all your outputs combined)
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* 2) output (like LVDS1)
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* 3) content container, dockarea containers
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* 4) workspaces
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* 5) split containers
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* ... (you can arbitrarily nest split containers)
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* 6) X11 window containers
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*
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*/
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/* Forward definitions */
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typedef struct Binding Binding;
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typedef struct Rect Rect;
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typedef struct xoutput Output;
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typedef struct Con Con;
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typedef struct Match Match;
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typedef struct Assignment Assignment;
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typedef struct Window i3Window;
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typedef struct mark_t mark_t;
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/******************************************************************************
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* Helper types
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*****************************************************************************/
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typedef enum { D_LEFT,
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D_RIGHT,
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D_UP,
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D_DOWN } direction_t;
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typedef enum { NO_ORIENTATION = 0,
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HORIZ,
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VERT } orientation_t;
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typedef enum { BS_NORMAL = 0,
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BS_NONE = 1,
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BS_PIXEL = 2 } border_style_t;
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/** parameter to specify whether tree_close_internal() and x_window_kill() should kill
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* only this specific window or the whole X11 client */
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typedef enum { DONT_KILL_WINDOW = 0,
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KILL_WINDOW = 1,
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KILL_CLIENT = 2 } kill_window_t;
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/** describes if the window is adjacent to the output (physical screen) edges. */
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typedef enum { ADJ_NONE = 0,
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ADJ_LEFT_SCREEN_EDGE = (1 << 0),
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ADJ_RIGHT_SCREEN_EDGE = (1 << 1),
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ADJ_UPPER_SCREEN_EDGE = (1 << 2),
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ADJ_LOWER_SCREEN_EDGE = (1 << 4) } adjacent_t;
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typedef enum { HEBM_NONE = ADJ_NONE,
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HEBM_VERTICAL = ADJ_LEFT_SCREEN_EDGE | ADJ_RIGHT_SCREEN_EDGE,
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HEBM_HORIZONTAL = ADJ_UPPER_SCREEN_EDGE | ADJ_LOWER_SCREEN_EDGE,
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HEBM_BOTH = HEBM_VERTICAL | HEBM_HORIZONTAL,
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HEBM_SMART = (1 << 5) } hide_edge_borders_mode_t;
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typedef enum { MM_REPLACE,
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MM_ADD } mark_mode_t;
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/**
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* Container layouts. See Con::layout.
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*/
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typedef enum {
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L_DEFAULT = 0,
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L_STACKED = 1,
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L_TABBED = 2,
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L_DOCKAREA = 3,
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L_OUTPUT = 4,
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L_SPLITV = 5,
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L_SPLITH = 6
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} layout_t;
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/**
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* Binding input types. See Binding::input_type.
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*/
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typedef enum {
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B_KEYBOARD = 0,
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B_MOUSE = 1
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} input_type_t;
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/**
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* Bitmask for matching XCB_XKB_GROUP_1 to XCB_XKB_GROUP_4.
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*/
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typedef enum {
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I3_XKB_GROUP_MASK_ANY = 0,
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I3_XKB_GROUP_MASK_1 = (1 << 0),
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I3_XKB_GROUP_MASK_2 = (1 << 1),
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I3_XKB_GROUP_MASK_3 = (1 << 2),
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I3_XKB_GROUP_MASK_4 = (1 << 3)
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} i3_xkb_group_mask_t;
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/**
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* The lower 16 bits contain a xcb_key_but_mask_t, the higher 16 bits contain
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* an i3_xkb_group_mask_t. This type is necessary for the fallback logic to
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* work when handling XKB groups (see ticket #1775) and makes the code which
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* locates keybindings upon KeyPress/KeyRelease events simpler.
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*/
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typedef uint32_t i3_event_state_mask_t;
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/**
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* Mouse pointer warping modes.
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*/
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typedef enum {
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POINTER_WARPING_OUTPUT = 0,
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POINTER_WARPING_NONE = 1
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} warping_t;
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/**
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* Stores a rectangle, for example the size of a window, the child window etc.
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* It needs to be packed so that the compiler will not add any padding bytes.
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* (it is used in src/ewmh.c for example)
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*
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* Note that x and y can contain signed values in some cases (for example when
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* used for the coordinates of a window, which can be set outside of the
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* visible area, but not when specifying the position of a workspace for the
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* _NET_WM_WORKAREA hint). Not declaring x/y as int32_t saves us a lot of
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* typecasts.
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*
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*/
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struct Rect {
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uint32_t x;
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uint32_t y;
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uint32_t width;
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uint32_t height;
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} __attribute__((packed));
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/**
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* Stores the reserved pixels on each screen edge read from a
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* _NET_WM_STRUT_PARTIAL.
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*
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*/
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struct reservedpx {
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uint32_t left;
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uint32_t right;
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uint32_t top;
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uint32_t bottom;
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};
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/**
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* Stores a width/height pair, used as part of deco_render_params to check
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* whether the rects width/height have changed.
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*
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*/
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struct width_height {
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uint32_t w;
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uint32_t h;
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};
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/**
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* Stores the parameters for rendering a window decoration. This structure is
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* cached in every Con and no re-rendering will be done if the parameters have
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* not changed (only the pixmaps will be copied).
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*
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*/
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struct deco_render_params {
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struct Colortriple *color;
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int border_style;
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struct width_height con_rect;
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struct width_height con_window_rect;
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Rect con_deco_rect;
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color_t background;
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layout_t parent_layout;
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bool con_is_leaf;
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};
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/**
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* Stores which workspace (by name or number) goes to which output.
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*
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*/
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struct Workspace_Assignment {
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char *name;
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char *output;
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TAILQ_ENTRY(Workspace_Assignment)
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ws_assignments;
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};
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struct Ignore_Event {
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int sequence;
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int response_type;
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time_t added;
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SLIST_ENTRY(Ignore_Event)
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ignore_events;
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};
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/**
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* Stores internal information about a startup sequence, like the workspace it
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* was initiated on.
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*
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*/
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struct Startup_Sequence {
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/** startup ID for this sequence, generated by libstartup-notification */
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char *id;
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/** workspace on which this startup was initiated */
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char *workspace;
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/** libstartup-notification context for this launch */
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SnLauncherContext *context;
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/** time at which this sequence should be deleted (after it was marked as
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* completed) */
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time_t delete_at;
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TAILQ_ENTRY(Startup_Sequence)
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sequences;
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};
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/**
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* Regular expression wrapper. It contains the pattern itself as a string (like
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* ^foo[0-9]$) as well as a pointer to the compiled PCRE expression and the
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* pcre_extra data returned by pcre_study().
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*
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* This makes it easier to have a useful logfile, including the matching or
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* non-matching pattern.
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*
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*/
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struct regex {
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char *pattern;
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pcre *regex;
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pcre_extra *extra;
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};
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/**
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* Stores a resolved keycode (from a keysym), including the modifier mask. Will
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* be passed to xcb_grab_key().
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*
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*/
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struct Binding_Keycode {
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xcb_keycode_t keycode;
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i3_event_state_mask_t modifiers;
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TAILQ_ENTRY(Binding_Keycode)
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keycodes;
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};
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/******************************************************************************
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* Major types
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*****************************************************************************/
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/**
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* Holds a keybinding, consisting of a keycode combined with modifiers and the
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* command which is executed as soon as the key is pressed (see
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* src/config_parser.c)
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*
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*/
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struct Binding {
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/* The type of input this binding is for. (Mouse bindings are not yet
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* implemented. All bindings are currently assumed to be keyboard bindings.) */
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input_type_t input_type;
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/** If true, the binding should be executed upon a KeyRelease event, not a
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* KeyPress (the default). */
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enum {
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/* This binding will only be executed upon KeyPress events */
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B_UPON_KEYPRESS = 0,
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/* This binding will be executed either upon a KeyRelease event, or… */
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B_UPON_KEYRELEASE = 1,
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/* …upon a KeyRelease event, even if the modifiers don’t match. This
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* state is triggered from get_binding() when the corresponding
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* KeyPress (!) happens, so that users can release the modifier keys
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* before releasing the actual key. */
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B_UPON_KEYRELEASE_IGNORE_MODS = 2,
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} release;
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/** If this is true for a mouse binding, the binding should be executed
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* when the button is pressed over the window border. */
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bool border;
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/** If this is true for a mouse binding, the binding should be executed
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* when the button is pressed over any part of the window, not just the
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* title bar (default). */
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bool whole_window;
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/** If this is true for a mouse binding, the binding should only be
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* executed if the button press was not on the titlebar. */
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bool exclude_titlebar;
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/** Keycode to bind */
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uint32_t keycode;
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/** Bitmask which is applied against event->state for KeyPress and
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* KeyRelease events to determine whether this binding applies to the
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* current state. */
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i3_event_state_mask_t event_state_mask;
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/** Symbol the user specified in configfile, if any. This needs to be
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* stored with the binding to be able to re-convert it into a keycode
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* if the keyboard mapping changes (using Xmodmap for example) */
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char *symbol;
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/** Only in use if symbol != NULL. Contains keycodes which generate the
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* specified symbol. Useful for unbinding and checking which binding was
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* used when a key press event comes in. */
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TAILQ_HEAD(keycodes_head, Binding_Keycode)
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keycodes_head;
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/** Command, like in command mode */
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char *command;
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TAILQ_ENTRY(Binding)
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bindings;
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};
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/**
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* Holds a command specified by either an:
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* - exec-line
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* - exec_always-line
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* in the config (see src/config.c)
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*
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*/
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struct Autostart {
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/** Command, like in command mode */
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char *command;
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/** no_startup_id flag for start_application(). Determines whether a
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* startup notification context/ID should be created. */
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bool no_startup_id;
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TAILQ_ENTRY(Autostart)
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autostarts;
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TAILQ_ENTRY(Autostart)
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autostarts_always;
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};
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struct output_name {
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char *name;
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SLIST_ENTRY(output_name)
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names;
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};
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/**
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* An Output is a physical output on your graphics driver. Outputs which
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* are currently in use have (output->active == true). Each output has a
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* position and a mode. An output usually corresponds to one connected
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* screen (except if you are running multiple screens in clone mode).
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*
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*/
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struct xoutput {
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/** Output id, so that we can requery the output directly later */
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xcb_randr_output_t id;
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/** Whether the output is currently active (has a CRTC attached with a
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* valid mode) */
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bool active;
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/** Internal flags, necessary for querying RandR screens (happens in
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* two stages) */
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bool changed;
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bool to_be_disabled;
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bool primary;
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/** List of names for the output.
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* An output always has at least one name; the first name is
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* considered the primary one. */
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SLIST_HEAD(names_head, output_name)
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names_head;
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/** Pointer to the Con which represents this output */
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Con *con;
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/** x, y, width, height */
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Rect rect;
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TAILQ_ENTRY(xoutput)
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outputs;
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};
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/**
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* A 'Window' is a type which contains an xcb_window_t and all the related
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* information (hints like _NET_WM_NAME for that window).
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*
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*/
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struct Window {
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xcb_window_t id;
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/** Holds the xcb_window_t (just an ID) for the leader window (logical
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* parent for toolwindows and similar floating windows) */
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xcb_window_t leader;
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xcb_window_t transient_for;
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/** Pointers to the Assignments which were already ran for this Window
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* (assignments run only once) */
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uint32_t nr_assignments;
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Assignment **ran_assignments;
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char *class_class;
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char *class_instance;
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/** The name of the window. */
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i3String *name;
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/** The WM_WINDOW_ROLE of this window (for example, the pidgin buddy window
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* sets "buddy list"). Useful to match specific windows in assignments or
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* for_window. */
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char *role;
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/** Flag to force re-rendering the decoration upon changes */
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bool name_x_changed;
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/** Whether the application used _NET_WM_NAME */
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bool uses_net_wm_name;
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/** Whether the application needs to receive WM_TAKE_FOCUS */
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bool needs_take_focus;
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/** Whether this window accepts focus. We store this inverted so that the
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* default will be 'accepts focus'. */
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bool doesnt_accept_focus;
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/** The _NET_WM_WINDOW_TYPE for this window. */
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xcb_atom_t window_type;
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/** The _NET_WM_DESKTOP for this window. */
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uint32_t wm_desktop;
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/** Whether the window says it is a dock window */
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enum { W_NODOCK = 0,
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W_DOCK_TOP = 1,
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W_DOCK_BOTTOM = 2 } dock;
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/** When this window was marked urgent. 0 means not urgent */
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struct timeval urgent;
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/** Pixels the window reserves. left/right/top/bottom */
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struct reservedpx reserved;
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/** Depth of the window */
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uint16_t depth;
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/* the wanted size of the window, used in combination with size
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* increments (see below). */
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int base_width;
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int base_height;
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/* minimum increment size specified for the window (in pixels) */
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int width_increment;
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int height_increment;
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/* Minimum size specified for the window. */
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int min_width;
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int min_height;
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/* aspect ratio from WM_NORMAL_HINTS (MPlayer uses this for example) */
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double aspect_ratio;
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};
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/**
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* A "match" is a data structure which acts like a mask or expression to match
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* certain windows or not. For example, when using commands, you can specify a
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* command like this: [title="*Firefox*"] kill. The title member of the match
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* data structure will then be filled and i3 will check each window using
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* match_matches_window() to find the windows affected by this command.
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*
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*/
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struct Match {
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/* Set if a criterion was specified incorrectly. */
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char *error;
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struct regex *title;
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struct regex *application;
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struct regex *class;
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struct regex *instance;
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struct regex *mark;
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struct regex *window_role;
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struct regex *workspace;
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xcb_atom_t window_type;
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enum {
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U_DONTCHECK = -1,
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U_LATEST = 0,
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U_OLDEST = 1
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} urgent;
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enum {
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M_DONTCHECK = -1,
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M_NODOCK = 0,
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M_DOCK_ANY = 1,
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M_DOCK_TOP = 2,
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M_DOCK_BOTTOM = 3
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} dock;
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xcb_window_t id;
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enum { WM_ANY = 0,
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WM_TILING,
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WM_FLOATING } window_mode;
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Con *con_id;
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/* Where the window looking for a match should be inserted:
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*
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* M_HERE = the matched container will be replaced by the window
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* (layout saving)
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* M_ASSIGN_WS = the matched container will be inserted in the target_ws.
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* M_BELOW = the window will be inserted as a child of the matched container
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* (dockareas)
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*
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*/
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enum { M_HERE = 0,
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M_ASSIGN_WS,
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M_BELOW } insert_where;
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TAILQ_ENTRY(Match)
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matches;
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/* Whether this match was generated when restarting i3 inplace.
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* Leads to not setting focus when managing a new window, because the old
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* focus stack should be restored. */
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bool restart_mode;
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};
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/**
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* An Assignment makes specific windows go to a specific workspace/output or
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* run a command for that window. With this mechanism, the user can -- for
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* example -- assign their browser to workspace "www". Checking if a window is
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* assigned works by comparing the Match data structure with the window (see
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* match_matches_window()).
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*
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*/
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struct Assignment {
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/** type of this assignment:
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*
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* A_COMMAND = run the specified command for the matching window
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* A_TO_WORKSPACE = assign the matching window to the specified workspace
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* A_NO_FOCUS = don't focus matched window when it is managed
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*
|
||
* While the type is a bitmask, only one value can be set at a time. It is
|
||
* a bitmask to allow filtering for multiple types, for example in the
|
||
* assignment_for() function.
|
||
*
|
||
*/
|
||
enum {
|
||
A_ANY = 0,
|
||
A_COMMAND = (1 << 0),
|
||
A_TO_WORKSPACE = (1 << 1),
|
||
A_NO_FOCUS = (1 << 2),
|
||
A_TO_WORKSPACE_NUMBER = (1 << 3)
|
||
} type;
|
||
|
||
/** the criteria to check if a window matches */
|
||
Match match;
|
||
|
||
/** destination workspace/command, depending on the type */
|
||
union {
|
||
char *command;
|
||
char *workspace;
|
||
} dest;
|
||
|
||
TAILQ_ENTRY(Assignment)
|
||
assignments;
|
||
};
|
||
|
||
/** Fullscreen modes. Used by Con.fullscreen_mode. */
|
||
typedef enum { CF_NONE = 0,
|
||
CF_OUTPUT = 1,
|
||
CF_GLOBAL = 2 } fullscreen_mode_t;
|
||
|
||
struct mark_t {
|
||
char *name;
|
||
|
||
TAILQ_ENTRY(mark_t)
|
||
marks;
|
||
};
|
||
|
||
/**
|
||
* A 'Con' represents everything from the X11 root window down to a single X11 window.
|
||
*
|
||
*/
|
||
struct Con {
|
||
bool mapped;
|
||
|
||
/* Should this container be marked urgent? This gets set when the window
|
||
* inside this container (if any) sets the urgency hint, for example. */
|
||
bool urgent;
|
||
|
||
/** This counter contains the number of UnmapNotify events for this
|
||
* container (or, more precisely, for its ->frame) which should be ignored.
|
||
* UnmapNotify events need to be ignored when they are caused by i3 itself,
|
||
* for example when reparenting or when unmapping the window on a workspace
|
||
* change. */
|
||
uint8_t ignore_unmap;
|
||
|
||
/* The surface used for the frame window. */
|
||
surface_t frame;
|
||
surface_t frame_buffer;
|
||
bool pixmap_recreated;
|
||
|
||
enum {
|
||
CT_ROOT = 0,
|
||
CT_OUTPUT = 1,
|
||
CT_CON = 2,
|
||
CT_FLOATING_CON = 3,
|
||
CT_WORKSPACE = 4,
|
||
CT_DOCKAREA = 5
|
||
} type;
|
||
|
||
/** the workspace number, if this Con is of type CT_WORKSPACE and the
|
||
* workspace is not a named workspace (for named workspaces, num == -1) */
|
||
int num;
|
||
|
||
struct Con *parent;
|
||
|
||
/* The position and size for this con. These coordinates are absolute. Note
|
||
* that the rect of a container does not include the decoration. */
|
||
struct Rect rect;
|
||
/* The position and size of the actual client window. These coordinates are
|
||
* relative to the container's rect. */
|
||
struct Rect window_rect;
|
||
/* The position and size of the container's decoration. These coordinates
|
||
* are relative to the container's parent's rect. */
|
||
struct Rect deco_rect;
|
||
/** the geometry this window requested when getting mapped */
|
||
struct Rect geometry;
|
||
|
||
char *name;
|
||
|
||
/** The format with which the window's name should be displayed. */
|
||
char *title_format;
|
||
|
||
/* a sticky-group is an identifier which bundles several containers to a
|
||
* group. The contents are shared between all of them, that is they are
|
||
* displayed on whichever of the containers is currently visible */
|
||
char *sticky_group;
|
||
|
||
/* user-definable marks to jump to this container later */
|
||
TAILQ_HEAD(marks_head, mark_t)
|
||
marks_head;
|
||
/* cached to decide whether a redraw is needed */
|
||
bool mark_changed;
|
||
|
||
double percent;
|
||
|
||
/* the x11 border pixel attribute */
|
||
int border_width;
|
||
int current_border_width;
|
||
|
||
struct Window *window;
|
||
|
||
/* timer used for disabling urgency */
|
||
struct ev_timer *urgency_timer;
|
||
|
||
/** Cache for the decoration rendering */
|
||
struct deco_render_params *deco_render_params;
|
||
|
||
/* Only workspace-containers can have floating clients */
|
||
TAILQ_HEAD(floating_head, Con)
|
||
floating_head;
|
||
|
||
TAILQ_HEAD(nodes_head, Con)
|
||
nodes_head;
|
||
|
||
TAILQ_HEAD(focus_head, Con)
|
||
focus_head;
|
||
|
||
TAILQ_HEAD(swallow_head, Match)
|
||
swallow_head;
|
||
|
||
fullscreen_mode_t fullscreen_mode;
|
||
|
||
/* Whether this window should stick to the glass. This corresponds to
|
||
* the _NET_WM_STATE_STICKY atom and will only be respected if the
|
||
* window is floating. */
|
||
bool sticky;
|
||
|
||
/* layout is the layout of this container: one of split[v|h], stacked or
|
||
* tabbed. Special containers in the tree (above workspaces) have special
|
||
* layouts like dockarea or output.
|
||
*
|
||
* last_split_layout is one of splitv or splith to support the old "layout
|
||
* default" command which by now should be "layout splitv" or "layout
|
||
* splith" explicitly.
|
||
*
|
||
* workspace_layout is only for type == CT_WORKSPACE cons. When you change
|
||
* the layout of a workspace without any children, i3 cannot just set the
|
||
* layout (because workspaces need to be splitv/splith to allow focus
|
||
* parent and opening new containers). Instead, it stores the requested
|
||
* layout in workspace_layout and creates a new split container with that
|
||
* layout whenever a new container is attached to the workspace. */
|
||
layout_t layout, last_split_layout, workspace_layout;
|
||
border_style_t border_style;
|
||
/** floating? (= not in tiling layout) This cannot be simply a bool
|
||
* because we want to keep track of whether the status was set by the
|
||
* application (by setting _NET_WM_WINDOW_TYPE appropriately) or by the
|
||
* user. The user’s choice overwrites automatic mode, of course. The
|
||
* order of the values is important because we check with >=
|
||
* FLOATING_AUTO_ON if a client is floating. */
|
||
enum {
|
||
FLOATING_AUTO_OFF = 0,
|
||
FLOATING_USER_OFF = 1,
|
||
FLOATING_AUTO_ON = 2,
|
||
FLOATING_USER_ON = 3
|
||
} floating;
|
||
|
||
TAILQ_ENTRY(Con)
|
||
nodes;
|
||
|
||
TAILQ_ENTRY(Con)
|
||
focused;
|
||
|
||
TAILQ_ENTRY(Con)
|
||
all_cons;
|
||
|
||
TAILQ_ENTRY(Con)
|
||
floating_windows;
|
||
|
||
/** callbacks */
|
||
void (*on_remove_child)(Con *);
|
||
|
||
enum {
|
||
/* Not a scratchpad window. */
|
||
SCRATCHPAD_NONE = 0,
|
||
|
||
/* Just moved to scratchpad, not resized by the user yet.
|
||
* Window will be auto-centered and sized appropriately. */
|
||
SCRATCHPAD_FRESH = 1,
|
||
|
||
/* The user changed position/size of the scratchpad window. */
|
||
SCRATCHPAD_CHANGED = 2
|
||
} scratchpad_state;
|
||
|
||
/* The ID of this container before restarting. Necessary to correctly
|
||
* interpret back-references in the JSON (such as the focus stack). */
|
||
int old_id;
|
||
|
||
/* Depth of the container window */
|
||
uint16_t depth;
|
||
|
||
/* The colormap for this con if a custom one is used. */
|
||
xcb_colormap_t colormap;
|
||
};
|