picom/src/win.h

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// SPDX-License-Identifier: MIT
// Copyright (c) 2011-2013, Christopher Jeffrey
// Copyright (c) 2013 Richard Grenville <pyxlcy@gmail.com>
#pragma once
#include <stdbool.h>
#include <xcb/xcb.h>
#include <xcb/render.h>
#include <xcb/damage.h>
// FIXME shouldn't need this
#ifdef CONFIG_OPENGL
#include <GL/gl.h>
#endif
#include "x.h"
#include "compiler.h"
#include "region.h"
#include "types.h"
#include "c2.h"
#include "render.h"
#include "utils.h"
typedef struct session session_t;
typedef struct _glx_texture glx_texture_t;
#ifdef CONFIG_OPENGL
// FIXME this type should be in opengl.h
// it is very unideal for it to be here
typedef struct {
/// Framebuffer used for blurring.
GLuint fbo;
/// Textures used for blurring.
GLuint textures[2];
/// Width of the textures.
int width;
/// Height of the textures.
int height;
} glx_blur_cache_t;
#endif
typedef enum {
WINTYPE_UNKNOWN,
WINTYPE_DESKTOP,
WINTYPE_DOCK,
WINTYPE_TOOLBAR,
WINTYPE_MENU,
WINTYPE_UTILITY,
WINTYPE_SPLASH,
WINTYPE_DIALOG,
WINTYPE_NORMAL,
WINTYPE_DROPDOWN_MENU,
WINTYPE_POPUP_MENU,
WINTYPE_TOOLTIP,
WINTYPE_NOTIFY,
WINTYPE_COMBO,
WINTYPE_DND,
NUM_WINTYPES
} wintype_t;
/// Enumeration type of window painting mode.
typedef enum {
WMODE_TRANS, // The window body is (potentially) transparent
WMODE_FRAME_TRANS, // The window body is opaque, but the frame is not
WMODE_SOLID, // The window is opaque including the frame
} winmode_t;
/**
* About coordinate systems
*
* In general, X is the horizontal axis, Y is the vertical axis.
* X goes from left to right, Y goes downwards.
*
* Global: the origin is the top left corner of the Xorg screen.
* Local: the origin is the top left corner of the window, including border.
*/
/// Structure representing a top-level window compton manages.
typedef struct win win;
struct win {
/// backend data attached to this window. Only available when
/// `state` is not UNMAPPED
void *win_data;
/// Pointer to the next lower window in window stack.
win *next;
/// Pointer to the next higher window to paint.
win *prev_trans;
// Core members
/// ID of the top-level frame window.
xcb_window_t id;
/// Window attributes.
xcb_get_window_attributes_reply_t a;
xcb_get_geometry_reply_t g;
#ifdef CONFIG_XINERAMA
/// Xinerama screen this window is on.
int xinerama_scr;
#endif
/// Window visual pict format;
xcb_render_pictforminfo_t *pictfmt;
/// Window painting mode.
winmode_t mode;
/// Whether the window has been damaged at least once.
bool ever_damaged;
/// Whether the window was damaged after last paint.
bool pixmap_damaged;
/// Damage of the window.
xcb_damage_damage_t damage;
/// Paint info of the window.
paint_t paint;
/// Bounding shape of the window. In local coordinates.
/// See above about coordinate systems.
region_t bounding_shape;
/// Window flags. Definitions above.
int_fast16_t flags;
/// Whether there's a pending <code>ConfigureNotify</code> happening
/// when the window is unmapped.
bool need_configure;
/// Queued <code>ConfigureNotify</code> when the window is unmapped.
xcb_configure_notify_event_t queue_configure;
/// The region of screen that will be obscured when windows above is painted,
/// in global coordinates.
/// We use this to reduce the pixels that needed to be paint when painting
/// this window and anything underneath. Depends on window frame
/// opacity state, window geometry, window mapped/unmapped state,
/// window mode of the windows above. DOES NOT INCLUDE the body of THIS WINDOW.
/// NULL means reg_ignore has not been calculated for this window.
rc_region_t *reg_ignore;
/// Whether the reg_ignore of all windows beneath this window are valid
bool reg_ignore_valid;
/// Cached width/height of the window including border.
int widthb, heightb;
/// Whether the window is being destroyed. This being true means destroy_win
/// is called, but window might still need to be faded out
bool destroying;
/// Whether the window is bounding-shaped.
bool bounding_shaped;
/// Whether the window just have rounded corners.
bool rounded_corners;
/// Whether this window is to be painted.
bool to_paint;
/// Whether the window is painting excluded.
bool paint_excluded;
/// Whether the window is unredirect-if-possible excluded.
bool unredir_if_possible_excluded;
/// Whether this window is in open/close state.
bool in_openclose;
// Client window related members
/// ID of the top-level client window of the window.
xcb_window_t client_win;
/// Type of the window.
wintype_t window_type;
/// Whether it looks like a WM window. We consider a window WM window if
/// it does not have a decedent with WM_STATE and it is not override-
/// redirected itself.
bool wmwin;
/// Leader window ID of the window.
xcb_window_t leader;
/// Cached topmost window ID of the window.
xcb_window_t cache_leader;
// Focus-related members
/// Whether the window is to be considered focused.
bool focused;
/// Override value of window focus state. Set by D-Bus method calls.
switch_t focused_force;
// Blacklist related members
/// Name of the window.
char *name;
/// Window instance class of the window.
char *class_instance;
/// Window general class of the window.
char *class_general;
/// <code>WM_WINDOW_ROLE</code> value of the window.
char *role;
const c2_lptr_t *cache_sblst;
const c2_lptr_t *cache_fblst;
const c2_lptr_t *cache_fcblst;
const c2_lptr_t *cache_ivclst;
const c2_lptr_t *cache_bbblst;
const c2_lptr_t *cache_oparule;
const c2_lptr_t *cache_pblst;
const c2_lptr_t *cache_uipblst;
// Opacity-related members
/// Current window opacity.
opacity_t opacity;
/// Target window opacity.
opacity_t opacity_tgt;
/// true if window (or client window, for broken window managers
/// not transferring client window's _NET_WM_OPACITY value) has opacity prop
bool has_opacity_prop;
/// Cached value of opacity window attribute.
opacity_t opacity_prop;
/// true if opacity is set by some rules
bool opacity_is_set;
/// Last window opacity value we set.
opacity_t opacity_set;
// Fading-related members
/// Do not fade if it's false. Change on window type change.
/// Used by fading blacklist in the future.
bool fade;
/// Fade state on last paint.
bool fade_last;
/// Override value of window fade state. Set by D-Bus method calls.
switch_t fade_force;
/// Callback to be called after fading completed.
void (*fade_callback) (session_t *ps, win **w);
// Frame-opacity-related members
/// Current window frame opacity. Affected by window opacity.
double frame_opacity;
/// Frame extents. Acquired from _NET_FRAME_EXTENTS.
margin_t frame_extents;
// Shadow-related members
/// Whether a window has shadow. Calculated.
bool shadow;
/// Shadow state on last paint.
bool shadow_last;
/// Override value of window shadow state. Set by D-Bus method calls.
switch_t shadow_force;
/// Opacity of the shadow. Affected by window opacity and frame opacity.
double shadow_opacity;
/// X offset of shadow. Affected by commandline argument.
int shadow_dx;
/// Y offset of shadow. Affected by commandline argument.
int shadow_dy;
/// Width of shadow. Affected by window size and commandline argument.
int shadow_width;
/// Height of shadow. Affected by window size and commandline argument.
int shadow_height;
/// Picture to render shadow. Affected by window size.
paint_t shadow_paint;
/// The value of _COMPTON_SHADOW attribute of the window. Below 0 for
/// none.
long prop_shadow;
// Dim-related members
/// Whether the window is to be dimmed.
bool dim;
/// Whether to invert window color.
bool invert_color;
/// Color inversion state on last paint.
bool invert_color_last;
/// Override value of window color inversion state. Set by D-Bus method
/// calls.
switch_t invert_color_force;
/// Whether to blur window background.
bool blur_background;
/// Background state on last paint.
bool blur_background_last;
#ifdef CONFIG_OPENGL
/// Textures and FBO background blur use.
glx_blur_cache_t glx_blur_cache;
#endif
};
int win_get_name(session_t *ps, win *w);
int win_get_role(session_t *ps, win *w);
void win_determine_mode(session_t *ps, win *w);
/**
* Set real focused state of a window.
*/
void win_set_focused(session_t *ps, win *w, bool focused);
void win_determine_fade(session_t *ps, win *w);
void win_update_prop_shadow_raw(session_t *ps, win *w);
void win_update_prop_shadow(session_t *ps, win *w);
void win_set_shadow(session_t *ps, win *w, bool shadow_new);
void win_determine_shadow(session_t *ps, win *w);
void win_set_invert_color(session_t *ps, win *w, bool invert_color_new);
void win_determine_invert_color(session_t *ps, win *w);
void win_set_blur_background(session_t *ps, win *w, bool blur_background_new);
void win_determine_blur_background(session_t *ps, win *w);
void win_on_wtype_change(session_t *ps, win *w);
void win_on_factor_change(session_t *ps, win *w);
void calc_win_size(session_t *ps, win *w);
void calc_shadow_geometry(session_t *ps, win *w);
void win_upd_wintype(session_t *ps, win *w);
void win_mark_client(session_t *ps, win *w, xcb_window_t client);
void win_unmark_client(session_t *ps, win *w);
void win_recheck_client(session_t *ps, win *w);
xcb_window_t win_get_leader_raw(session_t *ps, win *w, int recursions);
bool win_get_class(session_t *ps, win *w);
void win_calc_opacity(session_t *ps, win *w);
void win_calc_dim(session_t *ps, win *w);
/**
* Reread opacity property of a window.
*/
void win_update_opacity_prop(session_t *ps, win *w);
/**
* Update leader of a window.
*/
void win_update_leader(session_t *ps, win *w);
/**
* Update focused state of a window.
*/
void win_update_focused(session_t *ps, win *w);
/**
* Retrieve the bounding shape of a window.
*/
// XXX was win_border_size
void win_update_bounding_shape(session_t *ps, win *w);
/**
* Get a rectangular region in global coordinates a window (and possibly
* its shadow) occupies.
*
* Note w->shadow and shadow geometry must be correct before calling this
* function.
*/
void win_extents(win *w, region_t *res);
region_t win_extents_by_val(win *w);
/**
* Add a window to damaged area.
*
* @param ps current session
* @param w struct _win element representing the window
*/
void add_damage_from_win(session_t *ps, win *w);
/**
* Get a rectangular region a window occupies, excluding frame and shadow.
*
* Return region in global coordinates.
*/
void win_get_region_noframe_local(win *w, region_t *);
region_t win_get_region_noframe_local_by_val(win *w);
/**
* Retrieve frame extents from a window.
*/
void
win_update_frame_extents(session_t *ps, win *w, xcb_window_t client);
bool add_win(session_t *ps, xcb_window_t id, xcb_window_t prev);
/**
* Set fade callback of a window, and possibly execute the previous
* callback.
*
* If a callback can cause rendering result to change, it should call
* `queue_redraw`.
*
* @param exec_callback whether the previous callback is to be executed
*/
void win_set_fade_callback(session_t *ps, win **_w,
void (*callback) (session_t *ps, win **w), bool exec_callback);
/**
* Execute fade callback of a window if fading finished.
*/
void
win_check_fade_finished(session_t *ps, win **_w);
// Stop receiving events (except ConfigureNotify, XXX why?) from a window
void win_ev_stop(session_t *ps, win *w);
/**
* Get the leader of a window.
*
* This function updates w->cache_leader if necessary.
*/
static inline xcb_window_t
win_get_leader(session_t *ps, win *w) {
return win_get_leader_raw(ps, w, 0);
}
/// check if window has ARGB visual
bool win_has_alpha(win *w);
/// check if reg_ignore_valid is true for all windows above us
bool win_is_region_ignore_valid(session_t *ps, win *w);
static inline region_t
win_get_bounding_shape_global_by_val(win *w) {
region_t ret;
pixman_region32_init(&ret);
pixman_region32_copy(&ret, &w->bounding_shape);
pixman_region32_translate(&ret, w->g.x, w->g.y);
return ret;
}
/**
* Calculate the extents of the frame of the given window based on EWMH
* _NET_FRAME_EXTENTS and the X window border width.
*/
static inline margin_t attr_pure
win_calc_frame_extents(const win *w) {
margin_t result = w->frame_extents;
result.top = max_i(result.top, w->g.border_width);
result.left = max_i(result.left, w->g.border_width);
result.bottom = max_i(result.bottom, w->g.border_width);
result.right = max_i(result.right, w->g.border_width);
return result;
}
/**
* Check whether a window has WM frames.
*/
static inline bool attr_pure
win_has_frame(const win *w) {
return w->g.border_width
|| w->frame_extents.top || w->frame_extents.left
|| w->frame_extents.right || w->frame_extents.bottom;
}