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diff --git a/src/config.h b/src/config.h
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-// SPDX-License-Identifier: MIT
-// Copyright (c) 2011-2013, Christopher Jeffrey
-// Copyright (c) 2013 Richard Grenville <[email protected]>
-// Copyright (c) 2018 Yuxuan Shui <[email protected]>
-#pragma once
-
-/// Common functions and definitions for configuration parsing
-/// Used for command line arguments and config files
-
-#include <ctype.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <xcb/render.h>        // for xcb_render_fixed_t, XXX
-#include <xcb/xcb.h>
-#include <xcb/xfixes.h>
-
-#ifdef CONFIG_LIBCONFIG
-#include <libconfig.h>
-#endif
-
-#include "compiler.h"
-#include "kernel.h"
-#include "log.h"
-#include "region.h"
-#include "types.h"
-#include "win_defs.h"
-
-typedef struct session session_t;
-
-/// @brief Possible backends
-enum backend {
-	BKEND_XRENDER,
-	BKEND_GLX,
-	BKEND_XR_GLX_HYBRID,
-	BKEND_DUMMY,
-	NUM_BKEND,
-};
-
-enum open_window_animation {
-	OPEN_WINDOW_ANIMATION_NONE = 0,
-	OPEN_WINDOW_ANIMATION_AUTO,
-	OPEN_WINDOW_ANIMATION_FLYIN,
-	OPEN_WINDOW_ANIMATION_ZOOM,
-	OPEN_WINDOW_ANIMATION_SLIDE_UP,
-	OPEN_WINDOW_ANIMATION_SLIDE_DOWN,
-	OPEN_WINDOW_ANIMATION_SLIDE_LEFT,
-	OPEN_WINDOW_ANIMATION_SLIDE_RIGHT,
-	OPEN_WINDOW_ANIMATION_SLIDE_IN,
-	OPEN_WINDOW_ANIMATION_SLIDE_OUT,
-	OPEN_WINDOW_ANIMATION_INVALID,
-};
-
-typedef struct win_option_mask {
-	bool shadow : 1;
-	bool fade : 1;
-	bool focus : 1;
-	bool blur_background : 1;
-	bool full_shadow : 1;
-	bool redir_ignore : 1;
-	bool opacity : 1;
-	bool clip_shadow_above : 1;
-	enum open_window_animation animation;
-	enum open_window_animation animation_unmap;
-	enum open_window_animation animation_workspace_in;
-	enum open_window_animation animation_workspace_out;
-} win_option_mask_t;
-
-typedef struct win_option {
-	bool shadow;
-	bool fade;
-	bool focus;
-	bool blur_background;
-	bool full_shadow;
-	bool redir_ignore;
-	double opacity;
-	bool clip_shadow_above;
-	enum open_window_animation animation;
-	enum open_window_animation animation_unmap;
-	enum open_window_animation animation_workspace_in;
-	enum open_window_animation animation_workspace_out;
-} win_option_t;
-
-enum blur_method {
-	BLUR_METHOD_NONE = 0,
-	BLUR_METHOD_KERNEL,
-	BLUR_METHOD_BOX,
-	BLUR_METHOD_GAUSSIAN,
-	BLUR_METHOD_DUAL_KAWASE,
-	BLUR_METHOD_INVALID,
-};
-
-typedef struct _c2_lptr c2_lptr_t;
-
-/// Structure representing all options.
-typedef struct options {
-	// === Debugging ===
-	bool monitor_repaint;
-	bool print_diagnostics;
-	/// Render to a separate window instead of taking over the screen
-	bool debug_mode;
-	// === General ===
-	/// Use the experimental new backends?
-	bool experimental_backends;
-	/// Path to write PID to.
-	char *write_pid_path;
-	/// The backend in use.
-	enum backend backend;
-	/// Whether to sync X drawing with X Sync fence to avoid certain delay
-	/// issues with GLX backend.
-	bool xrender_sync_fence;
-	/// Whether to avoid using stencil buffer under GLX backend. Might be
-	/// unsafe.
-	bool glx_no_stencil;
-	/// Whether to avoid rebinding pixmap on window damage.
-	bool glx_no_rebind_pixmap;
-	/// Custom fragment shader for painting windows, as a string.
-	char *glx_fshader_win_str;
-	/// Whether to detect rounded corners.
-	bool detect_rounded_corners;
-	/// Force painting of window content with blending.
-	bool force_win_blend;
-	/// Resize damage for a specific number of pixels.
-	int resize_damage;
-	/// Whether to unredirect all windows if a full-screen opaque window
-	/// is detected.
-	bool unredir_if_possible;
-	/// List of conditions of windows to ignore as a full-screen window
-	/// when determining if a window could be unredirected.
-	c2_lptr_t *unredir_if_possible_blacklist;
-	/// Delay before unredirecting screen, in milliseconds.
-	long unredir_if_possible_delay;
-	/// Forced redirection setting through D-Bus.
-	switch_t redirected_force;
-	/// Whether to stop painting. Controlled through D-Bus.
-	switch_t stoppaint_force;
-	/// Whether to enable D-Bus support.
-	bool dbus;
-	/// Path to log file.
-	char *logpath;
-	/// Number of cycles to paint in benchmark mode. 0 for disabled.
-	int benchmark;
-	/// Window to constantly repaint in benchmark mode. 0 for full-screen.
-	xcb_window_t benchmark_wid;
-	/// A list of conditions of windows not to paint.
-	c2_lptr_t *paint_blacklist;
-	/// Whether to show all X errors.
-	bool show_all_xerrors;
-	/// Whether to avoid acquiring X Selection.
-	bool no_x_selection;
-	/// Window type option override.
-	win_option_t wintype_option[NUM_WINTYPES];
-
-	// === VSync & software optimization ===
-	/// User-specified refresh rate.
-	int refresh_rate;
-	/// Whether to enable refresh-rate-based software optimization.
-	bool sw_opti;
-	/// VSync method to use;
-	bool vsync;
-	/// Whether to use glFinish() instead of glFlush() for (possibly) better
-	/// VSync yet probably higher CPU usage.
-	bool vsync_use_glfinish;
-	/// Whether use damage information to help limit the area to paint
-	bool use_damage;
-
-	// === Shadow ===
-	/// Red, green and blue tone of the shadow.
-	double shadow_red, shadow_green, shadow_blue;
-	int shadow_radius;
-	int shadow_offset_x, shadow_offset_y;
-	double shadow_opacity;
-	/// argument string to shadow-exclude-reg option
-	char *shadow_exclude_reg_str;
-	/// Shadow blacklist. A linked list of conditions.
-	c2_lptr_t *shadow_blacklist;
-	/// Whether bounding-shaped window should be ignored.
-	bool shadow_ignore_shaped;
-	/// Whether to crop shadow to the very Xinerama screen.
-	bool xinerama_shadow_crop;
-	/// Don't draw shadow over these windows. A linked list of conditions.
-	c2_lptr_t *shadow_clip_list;
-
-	// === Fading ===
-	/// How much to fade in in a single fading step.
-	double fade_in_step;
-	/// How much to fade out in a single fading step.
-	double fade_out_step;
-	/// Fading time delta. In milliseconds.
-	int fade_delta;
-	/// Whether to disable fading on window open/close.
-	bool no_fading_openclose;
-	/// Whether to disable fading on ARGB managed destroyed windows.
-	bool no_fading_destroyed_argb;
-	/// Fading blacklist. A linked list of conditions.
-	c2_lptr_t *fade_blacklist;
-
-	// === Animations ===
-	/// Whether to do window animations
-	bool animations;
-	/// Which animation to run when opening a window
-	enum open_window_animation animation_for_open_window;
-	/// Which animation to run when opening a transient window
-	enum open_window_animation animation_for_transient_window;
-	/// Which animation to run when unmapping (e.g. minimizing) a window
-	enum open_window_animation animation_for_unmap_window;
-	/// Which animation to run when switching workspace
-	/// IMPORTANT: will only work if window manager updates
-	/// _NET_CURRENT_DESKTOP before doing the hide/show of windows
-	enum open_window_animation animation_for_workspace_switch_in;
-	enum open_window_animation animation_for_workspace_switch_out;
-	/// Spring stiffness for animation
-	double animation_stiffness;
-	/// Window mass for animation
-	double animation_window_mass;
-	/// Animation dampening
-	double animation_dampening;
-	/// Animation delta. In milliseconds.
-	double animation_delta;
-	/// Whether to force animations to not miss a beat
-	bool animation_force_steps;
-	/// Whether to clamp animations
-	bool animation_clamping;
-	/// TODO: window animation blacklist
-	/// TODO: open/close animations
-
-	// === Opacity ===
-	/// Default opacity for inactive windows.
-	/// 32-bit integer with the format of _NET_WM_OPACITY.
-	double inactive_opacity;
-	/// Default opacity for inactive windows.
-	double active_opacity;
-	/// Whether inactive_opacity overrides the opacity set by window
-	/// attributes.
-	bool inactive_opacity_override;
-	/// Frame opacity. Relative to window opacity, also affects shadow
-	/// opacity.
-	double frame_opacity;
-	/// Whether to detect _NET_WM_OPACITY on client windows. Used on window
-	/// managers that don't pass _NET_WM_OPACITY to frame windows.
-	bool detect_client_opacity;
-
-	// === Other window processing ===
-	/// Blur method for background of semi-transparent windows
-	enum blur_method blur_method;
-	// Size of the blur kernel
-	int blur_radius;
-	// Standard deviation for the gaussian blur
-	double blur_deviation;
-	// Strength of the dual_kawase blur
-	int blur_strength;
-	/// Whether to blur background when the window frame is not opaque.
-	/// Implies blur_background.
-	bool blur_background_frame;
-	/// Whether to use fixed blur strength instead of adjusting according
-	/// to window opacity.
-	bool blur_background_fixed;
-	/// Background blur blacklist. A linked list of conditions.
-	c2_lptr_t *blur_background_blacklist;
-	/// Blur convolution kernel.
-	struct conv **blur_kerns;
-	/// Number of convolution kernels
-	int blur_kernel_count;
-	/// How much to dim an inactive window. 0.0 - 1.0, 0 to disable.
-	double inactive_dim;
-	/// Whether to use fixed inactive dim opacity, instead of deciding
-	/// based on window opacity.
-	bool inactive_dim_fixed;
-	/// Conditions of windows to have inverted colors.
-	c2_lptr_t *invert_color_list;
-	/// Rules to change window opacity.
-	c2_lptr_t *opacity_rules;
-	/// Limit window brightness
-	double max_brightness;
-	// Radius of rounded window corners
-	int corner_radius;
-	/// Rounded corners blacklist. A linked list of conditions.
-	c2_lptr_t *rounded_corners_blacklist;
-
-	// === Focus related ===
-	/// Whether to try to detect WM windows and mark them as focused.
-	bool mark_wmwin_focused;
-	/// Whether to mark override-redirect windows as focused.
-	bool mark_ovredir_focused;
-	/// Whether to use EWMH _NET_ACTIVE_WINDOW to find active window.
-	bool use_ewmh_active_win;
-	/// A list of windows always to be considered focused.
-	c2_lptr_t *focus_blacklist;
-	/// Whether to do window grouping with <code>WM_TRANSIENT_FOR</code>.
-	bool detect_transient;
-	/// Whether to do window grouping with <code>WM_CLIENT_LEADER</code>.
-	bool detect_client_leader;
-
-	// === Calculated ===
-	/// Whether we need to track window leaders.
-	bool track_leader;
-
-	// Don't use EWMH to detect fullscreen applications
-	bool no_ewmh_fullscreen;
-
-	// Make transparent windows clip other windows, instead of blending on top of
-	// them
-	bool transparent_clipping;
-} options_t;
-
-extern const char *const BACKEND_STRS[NUM_BKEND + 1];
-
-bool must_use parse_long(const char *, long *);
-bool must_use parse_int(const char *, int *);
-struct conv **must_use parse_blur_kern_lst(const char *, bool *hasneg, int *count);
-bool must_use parse_geometry(session_t *, const char *, region_t *);
-bool must_use parse_rule_opacity(c2_lptr_t **, const char *);
-enum blur_method must_use parse_blur_method(const char *src);
-enum open_window_animation must_use parse_open_window_animation(const char *src);
-
-/**
- * Add a pattern to a condition linked list.
- */
-bool condlst_add(c2_lptr_t **, const char *);
-
-#ifdef CONFIG_LIBCONFIG
-/// Parse a configuration file
-/// Returns the actually config_file name used, allocated on heap
-/// Outputs:
-///   shadow_enable = whether shaodw is enabled globally
-///   fading_enable = whether fading is enabled globally
-///   win_option_mask = whether option overrides for specific window type is set for given
-///                     options
-///   hasneg = whether the convolution kernel has negative values
-char *
-parse_config_libconfig(options_t *, const char *config_file, bool *shadow_enable,
-                       bool *fading_enable, bool *hasneg, win_option_mask_t *winopt_mask);
-#endif
-
-void set_default_winopts(options_t *, win_option_mask_t *, bool shadow_enable,
-                         bool fading_enable, bool blur_enable);
-/// Parse a configuration file is that is enabled, also initialize the winopt_mask with
-/// default values
-/// Outputs and returns:
-///   same as parse_config_libconfig
-char *parse_config(options_t *, const char *config_file, bool *shadow_enable,
-                   bool *fading_enable, bool *hasneg, win_option_mask_t *winopt_mask);
-
-/**
- * Parse a backend option argument.
- */
-static inline attr_pure enum backend parse_backend(const char *str) {
-	for (enum backend i = 0; BACKEND_STRS[i]; ++i) {
-		if (!strcasecmp(str, BACKEND_STRS[i])) {
-			return i;
-		}
-	}
-	// Keep compatibility with an old revision containing a spelling mistake...
-	if (!strcasecmp(str, "xr_glx_hybird")) {
-		log_warn("backend xr_glx_hybird should be xr_glx_hybrid, the misspelt "
-		         "version will be removed soon.");
-		return BKEND_XR_GLX_HYBRID;
-	}
-	// cju wants to use dashes
-	if (!strcasecmp(str, "xr-glx-hybrid")) {
-		log_warn("backend xr-glx-hybrid should be xr_glx_hybrid, the alternative "
-		         "version will be removed soon.");
-		return BKEND_XR_GLX_HYBRID;
-	}
-	log_error("Invalid backend argument: %s", str);
-	return NUM_BKEND;
-}
-
-/**
- * Parse a VSync option argument.
- */
-static inline bool parse_vsync(const char *str) {
-	if (strcmp(str, "no") == 0 || strcmp(str, "none") == 0 ||
-	    strcmp(str, "false") == 0 || strcmp(str, "nah") == 0) {
-		return false;
-	}
-	return true;
-}
-
-// vim: set noet sw=8 ts=8 :