sway/include/sway/config.h

#ifndef _SWAY_CONFIG_H
#define _SWAY_CONFIG_H
#include <libinput.h>
#include <stdint.h>
#include <string.h>
#include <time.h>
#include <wlr/interfaces/wlr_switch.h>
#include <wlr/types/wlr_tablet_tool.h>
#include <wlr/util/box.h>
#include <xkbcommon/xkbcommon.h>
#include <xf86drmMode.h>
#include "../include/config.h"
#include "gesture.h"
#include "list.h"
#include "swaynag.h"
#include "tree/container.h"
#include "sway/input/tablet.h"
#include "sway/tree/root.h"
#include "wlr-layer-shell-unstable-v1-protocol.h"
#include <pango/pangocairo.h>

// TODO: Refactor this shit

/**
 * Describes a variable created via the `set` command.
 */
struct sway_variable {
	char *name;
	char *value;
};

enum binding_input_type {
	BINDING_KEYCODE,
	BINDING_KEYSYM,
	BINDING_MOUSECODE,
	BINDING_MOUSESYM,
	BINDING_SWITCH, // dummy, only used to call seat_execute_command
	BINDING_GESTURE // dummy, only used to call seat_execute_command
};

enum binding_flags {
	BINDING_RELEASE = 1 << 0,
	BINDING_LOCKED = 1 << 1, // keyboard only
	BINDING_BORDER = 1 << 2, // mouse only; trigger on container border
	BINDING_CONTENTS = 1 << 3, // mouse only; trigger on container contents
	BINDING_TITLEBAR = 1 << 4, // mouse only; trigger on container titlebar
	BINDING_CODE = 1 << 5, // keyboard only; convert keysyms into keycodes
	BINDING_RELOAD = 1 << 6, // switch only; (re)trigger binding on reload
	BINDING_INHIBITED = 1 << 7, // keyboard only: ignore shortcut inhibitor
	BINDING_NOREPEAT = 1 << 8, // keyboard only; do not trigger when repeating a held key
	BINDING_EXACT = 1 << 9, // gesture only; only trigger on exact match
};

/**
 * A key (or mouse) binding and an associated command.
 */
struct sway_binding {
	enum binding_input_type type;
	int order;
	char *input;
	uint32_t flags;
	list_t *keys; // sorted in ascending order
	list_t *syms; // sorted in ascending order; NULL if BINDING_CODE is not set
	uint32_t modifiers;
	xkb_layout_index_t group;
	char *command;
};

enum sway_switch_trigger {
	SWAY_SWITCH_TRIGGER_OFF,
	SWAY_SWITCH_TRIGGER_ON,
	SWAY_SWITCH_TRIGGER_TOGGLE,
};

/**
 * A laptop switch binding and an associated command.
 */
struct sway_switch_binding {
	enum wlr_switch_type type;
	enum sway_switch_trigger trigger;
	uint32_t flags;
	char *command;
};

/**
 * A gesture binding and an associated command.
 */
struct sway_gesture_binding {
	char *input;
	uint32_t flags;
	struct gesture gesture;
	char *command;
};

/**
 * Focus on window activation.
 */
enum sway_fowa {
	FOWA_SMART,
	FOWA_URGENT,
	FOWA_FOCUS,
	FOWA_NONE,
};

/**
 * A "mode" of keybindings created via the `mode` command.
 */
struct sway_mode {
	char *name;
	list_t *keysym_bindings;
	list_t *keycode_bindings;
	list_t *mouse_bindings;
	list_t *switch_bindings;
	list_t *gesture_bindings;
	bool pango;
};

struct input_config_mapped_from_region {
	double x1, y1;
	double x2, y2;
	bool mm;
};

struct calibration_matrix {
	bool configured;
	float matrix[6];
};

enum input_config_mapped_to {
	MAPPED_TO_DEFAULT,
	MAPPED_TO_OUTPUT,
	MAPPED_TO_REGION,
};

struct input_config_tool {
	enum wlr_tablet_tool_type type;
	enum sway_tablet_tool_mode mode;
};

/**
 * options for input devices
 */
struct input_config {
	char *identifier;
	const char *input_type;

	int accel_profile;
	struct calibration_matrix calibration_matrix;
	int click_method;
	int drag;
	int drag_lock;
	int dwt;
	int left_handed;
	int middle_emulation;
	int natural_scroll;
	float pointer_accel;
	float scroll_factor;
	int repeat_delay;
	int repeat_rate;
	int scroll_button;
	int scroll_method;
	int send_events;
	int tap;
	int tap_button_map;

	char *xkb_layout;
	char *xkb_model;
	char *xkb_options;
	char *xkb_rules;
	char *xkb_variant;
	char *xkb_file;

	bool xkb_file_is_set;

	int xkb_numlock;
	int xkb_capslock;

	struct input_config_mapped_from_region *mapped_from_region;

	enum input_config_mapped_to mapped_to;
	char *mapped_to_output;
	struct wlr_box *mapped_to_region;

	list_t *tools;

	bool capturable;
	struct wlr_box region;
};

/**
 * Options for misc device configurations that happen in the seat block
 */
struct seat_attachment_config {
	char *identifier;
	// TODO other things are configured here for some reason
};

enum seat_config_hide_cursor_when_typing {
	HIDE_WHEN_TYPING_DEFAULT, // the default is currently disabled
	HIDE_WHEN_TYPING_ENABLE,
	HIDE_WHEN_TYPING_DISABLE,
};

enum seat_config_allow_constrain {
	CONSTRAIN_DEFAULT, // the default is currently enabled
	CONSTRAIN_ENABLE,
	CONSTRAIN_DISABLE,
};

enum seat_config_shortcuts_inhibit {
	SHORTCUTS_INHIBIT_DEFAULT, // the default is currently enabled
	SHORTCUTS_INHIBIT_ENABLE,
	SHORTCUTS_INHIBIT_DISABLE,
};

enum seat_keyboard_grouping {
	KEYBOARD_GROUP_DEFAULT, // the default is currently smart
	KEYBOARD_GROUP_NONE,
	KEYBOARD_GROUP_SMART, // keymap and repeat info
};

enum sway_input_idle_source {
	IDLE_SOURCE_KEYBOARD = 1 << 0,
	IDLE_SOURCE_POINTER = 1 << 1,
	IDLE_SOURCE_TOUCH = 1 << 2,
	IDLE_SOURCE_TABLET_PAD = 1 << 3,
	IDLE_SOURCE_TABLET_TOOL = 1 << 4,
	IDLE_SOURCE_SWITCH = 1 << 5,
};

/**
 * Options for multiseat and other misc device configurations
 */
struct seat_config {
	char *name;
	int fallback; // -1 means not set
	list_t *attachments; // list of seat_attachment configs
	int hide_cursor_timeout;
	enum seat_config_hide_cursor_when_typing hide_cursor_when_typing;
	enum seat_config_allow_constrain allow_constrain;
	enum seat_config_shortcuts_inhibit shortcuts_inhibit;
	enum seat_keyboard_grouping keyboard_grouping;
	uint32_t idle_inhibit_sources, idle_wake_sources;
	struct {
		char *name;
		int size;
	} xcursor_theme;
};

enum config_dpms {
	DPMS_IGNORE,
	DPMS_ON,
	DPMS_OFF,
};

enum scale_filter_mode {
	SCALE_FILTER_DEFAULT, // the default is currently smart
	SCALE_FILTER_LINEAR,
	SCALE_FILTER_NEAREST,
	SCALE_FILTER_SMART,
};

enum render_bit_depth {
	RENDER_BIT_DEPTH_DEFAULT, // the default is currently 8
	RENDER_BIT_DEPTH_8,
	RENDER_BIT_DEPTH_10,
};

/**
 * Size and position configuration for a particular output.
 *
 * This is set via the `output` command.
 */
struct output_config {
	char *name;
	int enabled;
	int width, height;
	float refresh_rate;
	int custom_mode;
	drmModeModeInfo drm_mode;
	int x, y;
	float scale;
	enum scale_filter_mode scale_filter;
	int32_t transform;
	enum wl_output_subpixel subpixel;
	int max_render_time; // In milliseconds
	int adaptive_sync;
	enum render_bit_depth render_bit_depth;

	char *background;
	char *background_option;
	char *background_fallback;
	enum config_dpms dpms_state;
};

/**
 * Stores size of gaps for each side
 */
struct side_gaps {
	int top;
	int right;
	int bottom;
	int left;
};

enum smart_gaps_mode {
	SMART_GAPS_OFF,
	SMART_GAPS_ON,
	SMART_GAPS_INVERSE_OUTER,
};

/**
 * Stores configuration for a workspace, regardless of whether the workspace
 * exists.
 */
struct workspace_config {
	char *workspace;
	list_t *outputs;
	int gaps_inner;
	struct side_gaps gaps_outer;
};

enum pango_markup_config {
	PANGO_MARKUP_DISABLED = false,
	PANGO_MARKUP_ENABLED = true,
	PANGO_MARKUP_DEFAULT // The default is font dependent ("pango:" prefix)
};

struct bar_config {
	char *swaybar_command;
	struct wl_client *client;
	struct wl_listener client_destroy;

	/**
	 * One of "dock", "hide", "invisible"
	 *
	 * Always visible in dock mode. Visible only when modifier key is held in hide mode.
	 * Never visible in invisible mode.
	 */
	char *mode;
	/**
	 * One of "show" or "hide".
	 *
	 * In "show" mode, it will always be shown on top of the active workspace.
	 */
	char *hidden_state;
	bool visible_by_modifier; // only relevant in "hide" mode
	/**
	 * Id name used to identify the bar through IPC.
	 *
	 * Defaults to bar-x, where x corresponds to the position of the
	 * embedding bar block in the config file (bar-0, bar-1, ...).
	 */
	char *id;
	uint32_t modifier;
	list_t *outputs;
	char *position;
	list_t *bindings;
	char *status_command;
	enum pango_markup_config pango_markup;
	char *font;
	int height; // -1 not defined
	bool workspace_buttons;
	bool wrap_scroll;
	char *separator_symbol;
	bool strip_workspace_numbers;
	bool strip_workspace_name;
	bool binding_mode_indicator;
	bool verbose;
	struct side_gaps gaps;
	int status_padding;
	int status_edge_padding;
	uint32_t workspace_min_width;
	struct {
		char *background;
		char *statusline;
		char *separator;
		char *focused_background;
		char *focused_statusline;
		char *focused_separator;
		char *focused_workspace_border;
		char *focused_workspace_bg;
		char *focused_workspace_text;
		char *active_workspace_border;
		char *active_workspace_bg;
		char *active_workspace_text;
		char *inactive_workspace_border;
		char *inactive_workspace_bg;
		char *inactive_workspace_text;
		char *urgent_workspace_border;
		char *urgent_workspace_bg;
		char *urgent_workspace_text;
		char *binding_mode_border;
		char *binding_mode_bg;
		char *binding_mode_text;
	} colors;

#if HAVE_TRAY
	char *icon_theme;
	struct wl_list tray_bindings; // struct tray_binding::link
	list_t *tray_outputs; // char *
	int tray_padding;
#endif
};

struct bar_binding {
	uint32_t button;
	bool release;
	char *command;
};

#if HAVE_TRAY
struct tray_binding {
	uint32_t button;
	const char *command;
	struct wl_list link; // struct tray_binding::link
};
#endif

struct border_colors {
	float border[4];
	float background[4];
	float text[4];
	float indicator[4];
	float child_border[4];
};

enum edge_border_types {
	E_NONE, /**< Don't hide edge borders */
	E_VERTICAL, /**< hide vertical edge borders */
	E_HORIZONTAL, /**< hide horizontal edge borders */
	E_BOTH, /**< hide vertical and horizontal edge borders */
};

enum edge_border_smart_types {
	ESMART_OFF,
	ESMART_ON, /**< hide edges if precisely one window is present in workspace */
	ESMART_NO_GAPS, /**< hide edges if one window and gaps to edge is zero */
};

enum sway_popup_during_fullscreen {
	POPUP_SMART,
	POPUP_IGNORE,
	POPUP_LEAVE,
};

enum focus_follows_mouse_mode {
	FOLLOWS_NO,
	FOLLOWS_YES,
	FOLLOWS_ALWAYS,
};

enum focus_wrapping_mode {
	WRAP_NO,
	WRAP_YES,
	WRAP_FORCE,
	WRAP_WORKSPACE,
};

enum mouse_warping_mode {
	WARP_NO,
	WARP_OUTPUT,
	WARP_CONTAINER,
};

enum alignment {
	ALIGN_LEFT,
	ALIGN_CENTER,
	ALIGN_RIGHT,
};

enum xwayland_mode {
	XWAYLAND_MODE_DISABLED,
	XWAYLAND_MODE_LAZY,
	XWAYLAND_MODE_IMMEDIATE,
};

/**
 * The configuration struct. The result of loading a config file.
 */
struct sway_config {
	char *swaynag_command;
	struct swaynag_instance swaynag_config_errors;
	list_t *symbols;
	list_t *modes;
	list_t *bars;
	list_t *cmd_queue;
	list_t *workspace_configs;
	list_t *output_configs;
	list_t *input_configs;
	list_t *input_type_configs;
	list_t *seat_configs;
	list_t *criteria;
	list_t *no_focus;
	list_t *active_bar_modifiers;
	struct sway_mode *current_mode;
	struct bar_config *current_bar;
	uint32_t floating_mod;
	bool floating_mod_inverse;
	uint32_t dragging_key;
	uint32_t resizing_key;
	char *floating_scroll_up_cmd;
	char *floating_scroll_down_cmd;
	char *floating_scroll_left_cmd;
	char *floating_scroll_right_cmd;
	enum sway_container_layout default_orientation;
	enum sway_container_layout default_layout;
	char *font; // Used for IPC.
	PangoFontDescription *font_description; // Used internally for rendering and validating.
	int font_height;
	int font_baseline;
	bool pango_markup;
	int titlebar_border_thickness;
	int titlebar_h_padding;
	int titlebar_v_padding;
	size_t urgent_timeout;
	enum sway_fowa focus_on_window_activation;
	enum sway_popup_during_fullscreen popup_during_fullscreen;
	enum xwayland_mode xwayland;

	// swaybg
	char *swaybg_command;
	struct wl_client *swaybg_client;
	struct wl_listener swaybg_client_destroy;

	// Flags
	enum focus_follows_mouse_mode focus_follows_mouse;
	enum mouse_warping_mode mouse_warping;
	enum focus_wrapping_mode focus_wrapping;
	bool active;
	bool failed;
	bool reloading;
	bool reading;
	bool validating;
	bool auto_back_and_forth;
	bool show_marks;
	enum alignment title_align;

	bool tiling_drag;
	int tiling_drag_threshold;

	enum smart_gaps_mode smart_gaps;
	int gaps_inner;
	struct side_gaps gaps_outer;

	list_t *config_chain;
	bool user_config_path;
	const char *current_config_path;
	const char *current_config;
	int current_config_line_number;
	char *current_config_line;

	enum sway_container_border border;
	enum sway_container_border floating_border;
	int border_thickness;
	int floating_border_thickness;
	enum edge_border_types hide_edge_borders;
	enum edge_border_smart_types hide_edge_borders_smart;
	bool hide_lone_tab;

	// border colors
	struct {
		struct border_colors focused;
		struct border_colors focused_inactive;
		struct border_colors focused_tab_title;
		struct border_colors unfocused;
		struct border_colors urgent;
		struct border_colors placeholder;
		float background[4];
	} border_colors;

	bool has_focused_tab_title;

	// floating view
	int32_t floating_maximum_width;
	int32_t floating_maximum_height;
	int32_t floating_minimum_width;
	int32_t floating_minimum_height;

	// The keysym to keycode translation
	struct xkb_state *keysym_translation_state;

	// Context for command handlers
	struct {
		struct input_config *input_config;
		struct output_config *output_config;
		struct seat_config *seat_config;
		struct sway_seat *seat;
		struct sway_node *node;
		struct sway_container *container;
		struct sway_workspace *workspace;
		bool node_overridden; // True if the node is selected by means other than focus
		struct {
			int argc;
			char **argv;
		} leftovers;
	} handler_context;
};

/**
 * Loads the main config from the given path. is_active should be true when
 * reloading the config.
 */
bool load_main_config(const char *path, bool is_active, bool validating);

/**
 * Loads an included config. Can only be used after load_main_config.
 */
void load_include_configs(const char *path, struct sway_config *config,
		struct swaynag_instance *swaynag);

/**
 * Reads the config from the given FILE.
 */
bool read_config(FILE *file, struct sway_config *config,
		struct swaynag_instance *swaynag);

/**
 * Run the commands that were deferred when reading the config file.
 */
void run_deferred_commands(void);

/**
 * Run the binding commands that were deferred when initializing the inputs
 */
void run_deferred_bindings(void);

/**
 * Adds a warning entry to the swaynag instance used for errors.
 */
void config_add_swaynag_warning(char *fmt, ...);

/**
 * Free config struct
 */
void free_config(struct sway_config *config);

void free_sway_variable(struct sway_variable *var);

/**
 * Does variable replacement for a string based on the config's currently loaded variables.
 */
char *do_var_replacement(char *str);

int input_identifier_cmp(const void *item, const void *data);

struct input_config *new_input_config(const char* identifier);

void merge_input_config(struct input_config *dst, struct input_config *src);

struct input_config *store_input_config(struct input_config *ic, char **error);

void input_config_fill_rule_names(struct input_config *ic,
		struct xkb_rule_names *rules);

void free_input_config(struct input_config *ic);

int seat_name_cmp(const void *item, const void *data);

struct seat_config *new_seat_config(const char* name);

void merge_seat_config(struct seat_config *dst, struct seat_config *src);

struct seat_config *copy_seat_config(struct seat_config *seat);

void free_seat_config(struct seat_config *ic);

struct seat_attachment_config *seat_attachment_config_new(void);

struct seat_attachment_config *seat_config_get_attachment(
		struct seat_config *seat_config, char *identifier);

struct seat_config *store_seat_config(struct seat_config *seat);

int output_name_cmp(const void *item, const void *data);

void output_get_identifier(char *identifier, size_t len,
	struct sway_output *output);

const char *sway_output_scale_filter_to_string(enum scale_filter_mode scale_filter);

struct output_config *new_output_config(const char *name);

void merge_output_config(struct output_config *dst, struct output_config *src);

bool apply_output_config(struct output_config *oc, struct sway_output *output);

bool test_output_config(struct output_config *oc, struct sway_output *output);

struct output_config *store_output_config(struct output_config *oc);

struct output_config *find_output_config(struct sway_output *output);

void apply_output_config_to_outputs(struct output_config *oc);

void reset_outputs(void);

void free_output_config(struct output_config *oc);

bool spawn_swaybg(void);

int workspace_output_cmp_workspace(const void *a, const void *b);

void free_sway_binding(struct sway_binding *sb);

void free_switch_binding(struct sway_switch_binding *binding);

void free_gesture_binding(struct sway_gesture_binding *binding);

void seat_execute_command(struct sway_seat *seat, struct sway_binding *binding);

void load_swaybar(struct bar_config *bar);

void load_swaybars(void);

struct bar_config *default_bar_config(void);

void free_bar_config(struct bar_config *bar);

void free_bar_binding(struct bar_binding *binding);

void free_workspace_config(struct workspace_config *wsc);

/**
 * Updates the value of config->font_height based on the metrics for title's
 * font as reported by pango.
 * 
 * If the height has changed, all containers will be rearranged to take on the
 * new size.
 */
void config_update_font_height(void);

/**
 * Convert bindsym into bindcode using the first configured layout.
 * Return false in case the conversion is unsuccessful.
 */
bool translate_binding(struct sway_binding *binding);

void translate_keysyms(struct input_config *input_config);

void binding_add_translated(struct sway_binding *binding, list_t *bindings);

/* Global config singleton. */
extern struct sway_config *config;

#endif