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/*
* vim:ts=8:expandtab
*
* i3 - an improved dynamic tiling window manager
*
* © 2009-2010 Michael Stapelberg and contributors
*
* See file LICENSE for license information.
*
* include/data.h: This file defines all data structures used by i3
*
*/
#include <xcb/xcb.h>
#include <xcb/randr.h>
#include <xcb/xcb_atom.h>
#include <stdbool.h>
#ifndef _DATA_H
#define _DATA_H
#include "queue.h"
/*
* To get the big concept: There are helper structures like struct Colorpixel
* or struct Stack_Window. Everything which is also defined as type (see
* forward definitions) is considered to be a major structure, thus important.
*
* Let’s start from the biggest to the smallest:
*
* - An Output is a physical output on your graphics driver. Outputs which
* are currently in use have (output->active == true). Each output has a
* position and a mode. An output usually corresponds to one connected
* screen (except if you are running multiple screens in clone mode).
*
* - Each Output contains Workspaces. The concept is known from various
* other window managers. Basically, a workspace is a specific set of
* windows, usually grouped thematically (irc, www, work, …). You can switch
* between these.
*
* - Each Workspace has a table, which is our layout abstraction. You manage
* your windows by moving them around in your table. It grows as necessary.
*
* - Each cell of the table has a container, which can be in default or
* stacking mode. In default mode, each client is given equally much space
* in the container. In stacking mode, only one client is shown at a time,
* but all the titlebars are rendered at the top.
*
* - Inside the container are clients, which is X11-speak for a window.
*
*/
/* Forward definitions */
typedef struct Cell Cell;
typedef struct Font i3Font;
typedef struct Container Container;
typedef struct Client Client;
typedef struct Binding Binding;
typedef struct Workspace Workspace;
typedef struct Rect Rect;
typedef struct xoutput Output;
/******************************************************************************
* Helper types
*****************************************************************************/
typedef enum { D_LEFT, D_RIGHT, D_UP, D_DOWN } direction_t;
enum {
BIND_NONE = 0,
BIND_SHIFT = XCB_MOD_MASK_SHIFT, /* (1 << 0) */
BIND_CONTROL = XCB_MOD_MASK_CONTROL, /* (1 << 2) */
BIND_MOD1 = XCB_MOD_MASK_1, /* (1 << 3) */
BIND_MOD2 = XCB_MOD_MASK_2, /* (1 << 4) */
BIND_MOD3 = XCB_MOD_MASK_3, /* (1 << 5) */
BIND_MOD4 = XCB_MOD_MASK_4, /* (1 << 6) */
BIND_MOD5 = XCB_MOD_MASK_5, /* (1 << 7) */
BIND_MODE_SWITCH = (1 << 8)
};
/**
* Stores a rectangle, for example the size of a window, the child window etc.
* It needs to be packed so that the compiler will not add any padding bytes.
* (it is used in src/ewmh.c for example)
*
* Note that x and y can contain signed values in some cases (for example when
* used for the coordinates of a window, which can be set outside of the
* visible area, but not when specifying the position of a workspace for the
* _NET_WM_WORKAREA hint). Not declaring x/y as int32_t saves us a lot of
* typecasts.
*
* Note that x and y can contain signed values in some cases (for example when
* used for the coordinates of a window, which can be set outside of the
* visible area, but not when specifying the position of a workspace for the
* _NET_WM_WORKAREA hint). Not declaring x/y as int32_t saves us a lot of
* typecasts.
*
*/
struct Rect {
uint32_t x;
uint32_t y;
uint32_t width;
uint32_t height;
} __attribute__((packed));
/**
* Defines a position in the table
*
*/
struct Cell {
int row;
int column;
};
/**
* Used for the cache of colorpixels.
*
*/
struct Colorpixel {
uint32_t pixel;
char *hex;
SLIST_ENTRY(Colorpixel) colorpixels;
};
struct Cached_Pixmap {
xcb_pixmap_t id;
/* We’re going to paint on it, so a graphics context will be needed */
xcb_gcontext_t gc;
/* The rect with which the pixmap was created */
Rect rect;
/* The rect of the object to which this pixmap belongs. Necessary to
* find out when we need to re-create the pixmap. */
Rect *referred_rect;
xcb_drawable_t referred_drawable;
};
/**
* Contains data for the windows needed to draw the titlebars on in stacking
* mode
*
*/
struct Stack_Window {
xcb_window_t window;
struct Cached_Pixmap pixmap;
Rect rect;
/** Backpointer to the container this stack window is in */
Container *container;
SLIST_ENTRY(Stack_Window) stack_windows;
};
struct Ignore_Event {
int sequence;
time_t added;
SLIST_ENTRY(Ignore_Event) ignore_events;
};
/**
* Emulates the behaviour of tables of libxcb-wm, which in libxcb 0.3.4
* suddenly vanished.
*
*/
struct keyvalue_element {
uint32_t key;
void *value;
TAILQ_ENTRY(keyvalue_element) elements;
};
/******************************************************************************
* Major types
*****************************************************************************/
/**
* The concept of Workspaces is known from various other window
* managers. Basically, a workspace is a specific set of windows, usually
* grouped thematically (irc, www, work, …). You can switch between these.
*
*/
struct Workspace {
/** Number of this workspace, starting from 0 */
int num;
/** Name of the workspace (in UTF-8) */
char *utf8_name;
/** Name of the workspace (in UCS-2) */
char *name;
/** Length of the workspace’s name (in glyphs) */
int name_len;
/** Width of the workspace’s name (in pixels) rendered in config.font */
int text_width;
/** x, y, width, height */
Rect rect;
/** table dimensions */
int cols;
/** table dimensions */
int rows;
/** These are stored here only while this workspace is _not_ shown
* (see show_workspace()) */
int current_row;
/** These are stored here only while this workspace is _not_ shown
* (see show_workspace()) */
int current_col;
/** Should clients on this workspace be automatically floating? */
bool auto_float;
/** Are the floating clients on this workspace currently hidden? */
bool floating_hidden;
/** The name of the RandR output this screen should be on */
char *preferred_output;
/** True if any client on this workspace has its urgent flag set */
bool urgent;
/** the client who is started in fullscreen mode on this workspace,
* NULL if there is none */
Client *fullscreen_client;
/** The focus stack contains the clients in the correct order of focus
so that the focus can be reverted correctly when a client is
closed */
SLIST_HEAD(focus_stack_head, Client) focus_stack;
/** This tail queue contains the floating clients in order of when
* they were first set to floating (new floating clients are just
* appended) */
TAILQ_HEAD(floating_clients_head, Client) floating_clients;
/** Backpointer to the output this workspace is on */
Output *output;
/** This is a two-dimensional dynamic array of
* Container-pointers. I’ve always wanted to be a three-star
* programmer :) */
Container ***table;
/** width_factor and height_factor contain the amount of space
* (percentage) a column/row has of all the space which is available
* for resized windows. This ensures that non-resized windows (newly
* opened, for example) have the same size as always */
float *width_factor;
float *height_factor;
TAILQ_ENTRY(Workspace) workspaces;
};
/**
* Holds a keybinding, consisting of a keycode combined with modifiers and the
* command which is executed as soon as the key is pressed (see src/command.c)
*
*/
struct Binding {
/** Symbol the user specified in configfile, if any. This needs to be
* stored with the binding to be able to re-convert it into a keycode
* if the keyboard mapping changes (using Xmodmap for example) */
char *symbol;
/** Only in use if symbol != NULL. Gets set to the value to which the
* symbol got translated when binding. Useful for unbinding and
* checking which binding was used when a key press event comes in.
*
* This is an array of number_keycodes size. */
xcb_keycode_t *translated_to;
uint32_t number_keycodes;
/** Keycode to bind */
uint32_t keycode;
/** Bitmask consisting of BIND_MOD_1, BIND_MODE_SWITCH, … */
uint32_t mods;
/** Command, like in command mode */
char *command;
TAILQ_ENTRY(Binding) bindings;
};
/**
* Holds a command specified by an exec-line in the config (see src/config.c)
*
*/
struct Autostart {
/** Command, like in command mode */
char *command;
TAILQ_ENTRY(Autostart) autostarts;
};
/**
* Holds an assignment for a given window class/title to a specific workspace
* (see src/config.c)
*
*/
struct Assignment {
char *windowclass_title;
/** floating is true if this was an assignment to the special
* workspace "~". Matching clients will be put into floating mode
* automatically. */
enum {
ASSIGN_FLOATING_NO, /* don’t float, but put on a workspace */
ASSIGN_FLOATING_ONLY, /* float, but don’t assign on a workspace */
ASSIGN_FLOATING /* float and put on a workspace */
} floating;
/** The number of the workspace to assign to. */
int workspace;
TAILQ_ENTRY(Assignment) assignments;
};
/**
* Data structure for cached font information:
* - font id in X11 (load it once)
* - font height (multiple calls needed to get it)
*
*/
struct Font {
/** The name of the font, that is what the pattern resolves to */
char *name;
/** A copy of the pattern to build a cache */
char *pattern;
/** The height of the font, built from font_ascent + font_descent */
int height;
/** The xcb-id for the font */
xcb_font_t id;
TAILQ_ENTRY(Font) fonts;
};
/**
* A client is X11-speak for a window.
*
*/
struct Client {
/** initialized will be set to true if the client was fully
* initialized by manage_window() and all functions can be used
* normally */
bool initialized;
/** if you set a client to floating and set it back to managed, it
* does remember its old position and *tries* to get back there */
Cell old_position;
/** Backpointer. A client is inside a container */
Container *container;
/** Because dock clients don’t have a container, we have this
* workspace-backpointer */
Workspace *workspace;
/** x, y, width, height of the frame */
Rect rect;
/** Position in floating mode and in tiling mode are saved
* separately */
Rect floating_rect;
/** x, y, width, height of the child (relative to its frame) */
Rect child_rect;
/** contains the size calculated from the hints set by the window or 0
* if the client did not send any hints */
int proportional_height;
int proportional_width;
int base_height;
int base_width;
/** The amount of pixels which X will draw around the client. */
int border_width;
/** contains the minimum increment size as specified for the window
* (in pixels). */
int width_increment;
int height_increment;
/** Height which was determined by reading the _NET_WM_STRUT_PARTIAL
* top/bottom of the screen reservation */
int desired_height;
/** Name (= window title) */
char *name;
/** name_len stores the real string length (glyphs) of the window
* title if the client uses _NET_WM_NAME. Otherwise, it is set to -1
* to indicate that name should be just passed to X as 8-bit string
* and therefore will not be rendered correctly. This behaviour is to
* support legacy applications which do not set _NET_WM_NAME */
int name_len;
/** This will be set to true as soon as the first _NET_WM_NAME comes
* in. If set to true, legacy window names are ignored. */
bool uses_net_wm_name;
/** Holds the WM_CLASS (which consists of two strings, the instance
* and the class), useful for matching the client in commands */
char *window_class_instance;
char *window_class_class;
/** Holds the client’s mark, for vim-like jumping */
char *mark;
/** Holds the xcb_window_t (just an ID) for the leader window (logical
* parent for toolwindows and similar floating windows) */
xcb_window_t leader;
/** fullscreen is pretty obvious */
bool fullscreen;
/** 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 WM_CLASS to tools for example) 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;
/** Ensure TITLEBAR_TOP maps to 0 because we use calloc for
* initialization later */
enum { TITLEBAR_TOP = 0, TITLEBAR_LEFT, TITLEBAR_RIGHT, TITLEBAR_BOTTOM, TITLEBAR_OFF } titlebar_position;
/** Contains a bool specifying whether this window should not be drawn
* with the usual decorations */
bool borderless;
/** If a client is set as a dock, it is placed at the very bottom of
* the screen and its requested size is used */
bool dock;
/** True if the client set the urgency flag in its WM_HINTS property */
bool urgent;
/* After leaving fullscreen mode, a client needs to be reconfigured
* (configuration = setting X, Y, width and height). By setting the
* force_reconfigure flag, render_layout() will reconfigure the
* client. */
bool force_reconfigure;
/* When reparenting a window, an unmap-notify is sent. As we delete
* windows when they’re unmapped, we need to ignore that
* one. Therefore, this flag is set when reparenting. */
bool awaiting_useless_unmap;
/* XCB contexts */
xcb_window_t frame; /**< Our window: The frame around the
* client */
xcb_gcontext_t titlegc; /**< The titlebar’s graphic context
* inside the frame */
xcb_window_t child; /**< The client’s window */
/** The following entry provides the necessary list pointers to use
* Client with LIST_* macros */
CIRCLEQ_ENTRY(Client) clients;
SLIST_ENTRY(Client) dock_clients;
SLIST_ENTRY(Client) focus_clients;
TAILQ_ENTRY(Client) floating_clients;
};
/**
* A container is either in default, stacking or tabbed mode. There is one for
* each cell of the table.
*
*/
struct Container {
/* Those are speaking for themselves: */
Client *currently_focused;
int colspan;
int rowspan;
/* Position of the container inside our table */
int row;
int col;
/* Xinerama: X/Y of the container */
int x;
int y;
/* Width/Height of the container. Changeable by the user */
int width;
int height;
/* When in stacking mode, we draw the titlebars of each client onto a
* separate window */
struct Stack_Window stack_win;
/* Backpointer to the workspace this container is in */
Workspace *workspace;
/* Ensure MODE_DEFAULT maps to 0 because we use calloc for
* initialization later */
enum { MODE_DEFAULT = 0, MODE_STACK, MODE_TABBED } mode;
/* When in stacking, one can either have unlimited windows inside the
* container or set a limit for the rows or columns the stack window
* should display to use the screen more efficiently. */
enum { STACK_LIMIT_NONE = 0, STACK_LIMIT_COLS, STACK_LIMIT_ROWS } stack_limit;
/* The number of columns or rows to limit to, see stack_limit */
int stack_limit_value;
CIRCLEQ_HEAD(client_head, Client) clients;
};
/**
* An Output is a physical output on your graphics driver. Outputs which
* are currently in use have (output->active == true). Each output has a
* position and a mode. An output usually corresponds to one connected
* screen (except if you are running multiple screens in clone mode).
*
*/
struct xoutput {
/** Output id, so that we can requery the output directly later */
xcb_randr_output_t id;
/** Name of the output */
char *name;
/** Whether the output is currently active (has a CRTC attached with a
* valid mode) */
bool active;
/** Internal flags, necessary for querying RandR screens (happens in
* two stages) */
bool changed;
bool to_be_disabled;
/** Current workspace selected on this virtual screen */
Workspace *current_workspace;
/** x, y, width, height */
Rect rect;
/** The bar window */
xcb_window_t bar;
xcb_gcontext_t bargc;
/** Contains all clients with _NET_WM_WINDOW_TYPE ==
* _NET_WM_WINDOW_TYPE_DOCK */
SLIST_HEAD(dock_clients_head, Client) dock_clients;
TAILQ_ENTRY(xoutput) outputs;
};
#endif
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