491 lines
16 KiB
C
491 lines
16 KiB
C
/*
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* vim:ts=8:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* © 2009 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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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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#include <xcb/xcb.h>
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#include <xcb/xcb_atom.h>
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#include <stdbool.h>
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#ifndef _DATA_H
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#define _DATA_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 Colorpixel
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* or struct Stack_Window. Everything 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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* Let’s start from the biggest to the smallest:
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*
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* - An i3Screen is a virtual screen (Xinerama). This can be a single one,
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* though two monitors might be connected, if you’re running clone
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* mode. There can also be multiple of them.
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*
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* - Each i3Screen contains Workspaces. The concept is known from various
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* other window managers. Basically, a workspace is a specific set of
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* windows, usually grouped thematically (irc, www, work, …). You can switch
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* between these.
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*
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* - Each Workspace has a table, which is our layout abstraction. You manage
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* your windows by moving them around in your table. It grows as necessary.
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*
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* - Each cell of the table has a container, which can be in default or
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* stacking mode. In default mode, each client is given equally much space
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* in the container. In stacking mode, only one client is shown at a time,
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* but all the titlebars are rendered at the top.
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*
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* - Inside the container are clients, which is X11-speak for a window.
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*
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*/
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/* Forward definitions */
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typedef struct Cell Cell;
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typedef struct Font i3Font;
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typedef struct Container Container;
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typedef struct Client Client;
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typedef struct Binding Binding;
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typedef struct Workspace Workspace;
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typedef struct Rect Rect;
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typedef struct Screen i3Screen;
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/******************************************************************************
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* Helper types
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*****************************************************************************/
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typedef enum { D_LEFT, D_RIGHT, D_UP, D_DOWN } direction_t;
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enum {
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BIND_NONE = 0,
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BIND_SHIFT = XCB_MOD_MASK_SHIFT, /* (1 << 0) */
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BIND_CONTROL = XCB_MOD_MASK_CONTROL, /* (1 << 2) */
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BIND_MOD1 = XCB_MOD_MASK_1, /* (1 << 3) */
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BIND_MOD2 = XCB_MOD_MASK_2, /* (1 << 4) */
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BIND_MOD3 = XCB_MOD_MASK_3, /* (1 << 5) */
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BIND_MOD4 = XCB_MOD_MASK_4, /* (1 << 6) */
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BIND_MOD5 = XCB_MOD_MASK_5, /* (1 << 7) */
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BIND_MODE_SWITCH = (1 << 8)
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};
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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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*
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*/
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struct Rect {
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uint32_t x, y;
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uint32_t width, height;
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};
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/**
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* Defines a position in the table
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*
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*/
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struct Cell {
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int row;
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int column;
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};
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/**
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* Used for the cache of colorpixels.
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*
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*/
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struct Colorpixel {
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uint32_t pixel;
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char *hex;
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SLIST_ENTRY(Colorpixel) colorpixels;
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};
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struct Cached_Pixmap {
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xcb_pixmap_t id;
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/* We’re going to paint on it, so a graphics context will be needed */
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xcb_gcontext_t gc;
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/* The rect with which the pixmap was created */
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Rect rect;
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/* The rect of the object to which this pixmap belongs. Necessary to
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* find out when we need to re-create the pixmap. */
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Rect *referred_rect;
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xcb_drawable_t referred_drawable;
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};
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/**
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* Contains data for the windows needed to draw the titlebars on in stacking
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* mode
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*
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*/
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struct Stack_Window {
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xcb_window_t window;
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struct Cached_Pixmap pixmap;
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Rect rect;
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/** Backpointer to the container this stack window is in */
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Container *container;
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SLIST_ENTRY(Stack_Window) stack_windows;
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};
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struct Ignore_Event {
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int sequence;
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time_t added;
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SLIST_ENTRY(Ignore_Event) ignore_events;
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};
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/**
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* Emulates the behaviour of tables of libxcb-wm, which in libxcb 0.3.4
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* suddenly vanished.
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*
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*/
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struct keyvalue_element {
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uint32_t key;
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void *value;
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TAILQ_ENTRY(keyvalue_element) elements;
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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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* The concept of Workspaces is known from various other window
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* managers. Basically, a workspace is a specific set of windows, usually
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* grouped thematically (irc, www, work, …). You can switch between these.
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*
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*/
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struct Workspace {
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/** Number of this workspace, starting from 0 */
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int num;
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/** Name of the workspace (in UCS-2) */
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char *name;
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/** Length of the workspace’s name (in glyphs) */
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int name_len;
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/** Width of the workspace’s name (in pixels) rendered in config.font */
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int text_width;
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/** x, y, width, height */
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Rect rect;
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/** table dimensions */
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int cols;
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/** table dimensions */
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int rows;
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/** These are stored here only while this workspace is _not_ shown
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* (see show_workspace()) */
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int current_row;
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/** These are stored here only while this workspace is _not_ shown
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* (see show_workspace()) */
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int current_col;
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/** Should clients on this workspace be automatically floating? */
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bool auto_float;
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/** Are the floating clients on this workspace currently hidden? */
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bool floating_hidden;
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/** A <screen> specifier on which this workspace would like to be (if
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* the screen is available). screen := <number> | <position> */
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char *preferred_screen;
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/** Temporary flag needed for re-querying xinerama screens */
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bool reassigned;
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/** the client who is started in fullscreen mode on this workspace,
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* NULL if there is none */
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Client *fullscreen_client;
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/** The focus stack contains the clients in the correct order of focus
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so that the focus can be reverted correctly when a client is
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closed */
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SLIST_HEAD(focus_stack_head, Client) focus_stack;
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/** This tail queue contains the floating clients in order of when
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* they were first set to floating (new floating clients are just
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* appended) */
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TAILQ_HEAD(floating_clients_head, Client) floating_clients;
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/** Backpointer to the screen this workspace is on */
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i3Screen *screen;
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/** This is a two-dimensional dynamic array of
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* Container-pointers. I’ve always wanted to be a three-star
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* programmer :) */
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Container ***table;
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/** width_factor and height_factor contain the amount of space
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* (percentage) a column/row has of all the space which is available
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* for resized windows. This ensures that non-resized windows (newly
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* opened, for example) have the same size as always */
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float *width_factor;
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float *height_factor;
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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 src/command.c)
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*
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*/
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struct Binding {
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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. Gets set to the value to which the
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* symbol got translated when binding. Useful for unbinding and
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* checking which binding was used when a key press event comes in.
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*
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* This is an array of number_keycodes size. */
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xcb_keycode_t *translated_to;
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uint32_t number_keycodes;
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/** Keycode to bind */
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uint32_t keycode;
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/** Bitmask consisting of BIND_MOD_1, BIND_MODE_SWITCH, … */
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uint32_t mods;
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/** Command, like in command mode */
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char *command;
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TAILQ_ENTRY(Binding) bindings;
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};
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/**
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* Holds a command specified by an exec-line 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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TAILQ_ENTRY(Autostart) autostarts;
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};
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/**
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* Holds an assignment for a given window class/title to a specific workspace
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* (see src/config.c)
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*
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*/
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struct Assignment {
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char *windowclass_title;
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/** floating is true if this was an assignment to the special
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* workspace "~". Matching clients will be put into floating mode
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* automatically. */
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enum {
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ASSIGN_FLOATING_NO, /* don’t float, but put on a workspace */
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ASSIGN_FLOATING_ONLY, /* float, but don’t assign on a workspace */
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ASSIGN_FLOATING /* float and put on a workspace */
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} floating;
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/** The number of the workspace to assign to. */
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int workspace;
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TAILQ_ENTRY(Assignment) assignments;
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};
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/**
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* Data structure for cached font information:
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* - font id in X11 (load it once)
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* - font height (multiple calls needed to get it)
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*
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*/
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struct Font {
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/** The name of the font, that is what the pattern resolves to */
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char *name;
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/** A copy of the pattern to build a cache */
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char *pattern;
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/** The height of the font, built from font_ascent + font_descent */
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int height;
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/** The xcb-id for the font */
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xcb_font_t id;
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TAILQ_ENTRY(Font) fonts;
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};
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/**
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* A client is X11-speak for a window.
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*
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*/
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struct Client {
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/** initialized will be set to true if the client was fully
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* initialized by manage_window() and all functions can be used
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* normally */
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bool initialized;
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/** if you set a client to floating and set it back to managed, it
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* does remember its old position and *tries* to get back there */
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Cell old_position;
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/** Backpointer. A client is inside a container */
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Container *container;
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/** Because dock clients don’t have a container, we have this
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* workspace-backpointer */
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Workspace *workspace;
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/** x, y, width, height of the frame */
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Rect rect;
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/** Position in floating mode and in tiling mode are saved
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* separately */
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Rect floating_rect;
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/** x, y, width, height of the child (relative to its frame) */
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Rect child_rect;
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/** contains the size calculated from the hints set by the window or 0
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* if the client did not send any hints */
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int proportional_height;
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int proportional_width;
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int base_height;
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int base_width;
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/** contains the minimum increment size as specified for the window
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* (in pixels). */
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int width_increment;
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int height_increment;
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/** Height which was determined by reading the _NET_WM_STRUT_PARTIAL
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* top/bottom of the screen reservation */
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int desired_height;
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/** Name (= window title) */
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char *name;
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/** name_len stores the real string length (glyphs) of the window
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* title if the client uses _NET_WM_NAME. Otherwise, it is set to -1
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* to indicate that name should be just passed to X as 8-bit string
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* and therefore will not be rendered correctly. This behaviour is to
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* support legacy applications which do not set _NET_WM_NAME */
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int name_len;
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/** This will be set to true as soon as the first _NET_WM_NAME comes
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* in. If set to true, legacy window names are ignored. */
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bool uses_net_wm_name;
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/** Holds the WM_CLASS, useful for matching the client in commands */
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char *window_class;
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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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/** fullscreen is pretty obvious */
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bool fullscreen;
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/** floating? (= not in tiling layout) This cannot be simply a bool
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* because we want to keep track of whether the status was set by the
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* application (by setting WM_CLASS to tools for example) or by the
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* user. The user’s choice overwrites automatic mode, of course. The
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* order of the values is important because we check with >=
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* FLOATING_AUTO_ON if a client is floating. */
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enum { FLOATING_AUTO_OFF = 0, FLOATING_USER_OFF = 1, FLOATING_AUTO_ON = 2, FLOATING_USER_ON = 3 } floating;
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/** Ensure TITLEBAR_TOP maps to 0 because we use calloc for
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* initialization later */
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enum { TITLEBAR_TOP = 0, TITLEBAR_LEFT, TITLEBAR_RIGHT, TITLEBAR_BOTTOM, TITLEBAR_OFF } titlebar_position;
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/** Contains a bool specifying whether this window should not be drawn
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* with the usual decorations */
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bool borderless;
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/** If a client is set as a dock, it is placed at the very bottom of
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* the screen and its requested size is used */
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bool dock;
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/* After leaving fullscreen mode, a client needs to be reconfigured
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* (configuration = setting X, Y, width and height). By setting the
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* force_reconfigure flag, render_layout() will reconfigure the
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* client. */
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bool force_reconfigure;
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/* When reparenting a window, an unmap-notify is sent. As we delete
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* windows when they’re unmapped, we need to ignore that
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* one. Therefore, this flag is set when reparenting. */
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bool awaiting_useless_unmap;
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/* XCB contexts */
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xcb_window_t frame; /**< Our window: The frame around the
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* client */
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xcb_gcontext_t titlegc; /**< The titlebar’s graphic context
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* inside the frame */
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xcb_window_t child; /**< The client’s window */
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/** The following entry provides the necessary list pointers to use
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* Client with LIST_* macros */
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CIRCLEQ_ENTRY(Client) clients;
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SLIST_ENTRY(Client) dock_clients;
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SLIST_ENTRY(Client) focus_clients;
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TAILQ_ENTRY(Client) floating_clients;
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};
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/**
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* A container is either in default or stacking mode. It sits inside each cell
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* of the table.
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*
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*/
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struct Container {
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/* Those are speaking for themselves: */
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Client *currently_focused;
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int colspan;
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int rowspan;
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/* Position of the container inside our table */
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int row;
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int col;
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/* Xinerama: X/Y of the container */
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int x;
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int y;
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/* Width/Height of the container. Changeable by the user */
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int width;
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int height;
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/* When in stacking mode, we draw the titlebars of each client onto a
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* separate window */
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struct Stack_Window stack_win;
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/* Backpointer to the workspace this container is in */
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Workspace *workspace;
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/* Ensure MODE_DEFAULT maps to 0 because we use calloc for
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* initialization later */
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enum { MODE_DEFAULT = 0, MODE_STACK } mode;
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CIRCLEQ_HEAD(client_head, Client) clients;
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};
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/**
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* This is a virtual screen (Xinerama). This can be a single one, though two
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* monitors might be connected, if you’re running clone mode. There can also
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* be multiple of them.
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*
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*/
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struct Screen {
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/** Virtual screen number */
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int num;
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/** Current workspace selected on this virtual screen */
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int current_workspace;
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/** x, y, width, height */
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Rect rect;
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/** The bar window */
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xcb_window_t bar;
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xcb_gcontext_t bargc;
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/** Contains all clients with _NET_WM_WINDOW_TYPE ==
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* _NET_WM_WINDOW_TYPE_DOCK */
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SLIST_HEAD(dock_clients_head, Client) dock_clients;
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TAILQ_ENTRY(Screen) screens;
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};
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#endif
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