/* * vim:ts=8:expandtab * * i3 - an improved dynamic tiling window manager * * © 2009 Michael Stapelberg and contributors * * See file LICENSE for license information. * * include/data.h: This file defines all data structures used by i3 * */ #include #include #include #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 i3Screen is a virtual screen (Xinerama). This can be a single one, * though two monitors might be connected, if you’re running clone * mode. There can also be multiple of them. * * - Each i3Screen 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 Screen i3Screen; /****************************************************************************** * 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) * */ 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 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; /** A specifier on which this workspace would like to be (if * the screen is available). screen := | */ char *preferred_screen; /** Temporary flag needed for re-querying xinerama screens */ bool reassigned; /** 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 screen this workspace is on */ i3Screen *screen; /** 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; }; /** * This is a virtual screen (Xinerama). This can be a single one, though two * monitors might be connected, if you’re running clone mode. There can also * be multiple of them. * */ struct Screen { /** Virtual screen number */ int num; /** 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(Screen) screens; }; #endif