539 lines
18 KiB
C
539 lines
18 KiB
C
/*
|
||
* 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.
|
||
*
|
||
*/
|
||
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
|