picom/src/x.h

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// SPDX-License-Identifier: MPL-2.0
// Copyright (c) 2018 Yuxuan Shui <yshuiv7@gmail.com>
#pragma once
#include <stdint.h>
#include <stdbool.h>
#include <xcb/xcb.h>
#include <xcb/render.h>
#include <xcb/xcb_renderutil.h>
#include "region.h"
typedef struct session session_t;
typedef struct winprop winprop_t;
#define XCB_SYNCED_VOID(func, c, ...) xcb_request_check(c, func##_checked(c, __VA_ARGS__));
#define XCB_SYNCED(func, c, ...) ({ \
xcb_generic_error_t *e = NULL; \
__auto_type r = func##_reply(c, func(c, __VA_ARGS__), &e); \
if (e) { \
x_print_error(e->sequence, e->major_code, e->minor_code, e->error_code); \
free(e); \
} \
r; \
})
/**
* Send a request to X server and get the reply to make sure all previous
* requests are processed, and their replies received
*
* xcb_get_input_focus is used here because it is the same request used by
* libX11
*/
static inline void
x_sync(xcb_connection_t *c) {
free(xcb_get_input_focus_reply(c, xcb_get_input_focus(c), NULL));
}
/**
* Get a specific attribute of a window.
*
* Returns a blank structure if the returned type and format does not
* match the requested type and format.
*
* @param ps current session
* @param w window
* @param atom atom of attribute to fetch
* @param length length to read
* @param rtype atom of the requested type
* @param rformat requested format
* @return a <code>winprop_t</code> structure containing the attribute
* and number of items. A blank one on failure.
*/
winprop_t
wid_get_prop_adv(const session_t *ps, Window w, Atom atom, long offset,
long length, Atom rtype, int rformat);
/**
* Get the value of a type-<code>Window</code> property of a window.
*
* @return the value if successful, 0 otherwise
*/
Window
wid_get_prop_window(session_t *ps, Window wid, Atom aprop);
/**
* Get the value of a text property of a window.
*/
bool wid_get_text_prop(session_t *ps, Window wid, Atom prop,
char ***pstrlst, int *pnstr);
xcb_render_pictforminfo_t *x_get_pictform_for_visual(session_t *, xcb_visualid_t);
xcb_render_picture_t x_create_picture_with_pictfmt_and_pixmap(
session_t *ps, xcb_render_pictforminfo_t *pictfmt,
xcb_pixmap_t pixmap, unsigned long valuemask,
const xcb_render_create_picture_value_list_t *attr)
__attribute__((nonnull(1, 2)));
xcb_render_picture_t x_create_picture_with_visual_and_pixmap(
session_t *ps, xcb_visualid_t visual,
xcb_pixmap_t pixmap, unsigned long valuemask,
const xcb_render_create_picture_value_list_t *attr)
__attribute__((nonnull(1)));
xcb_render_picture_t x_create_picture_with_standard_and_pixmap(
session_t *ps, xcb_pict_standard_t standard,
xcb_pixmap_t pixmap, unsigned long valuemask,
const xcb_render_create_picture_value_list_t *attr)
__attribute__((nonnull(1)));
/**
* Create an picture.
*/
xcb_render_picture_t
x_create_picture(session_t *ps, int wid, int hei,
xcb_render_pictforminfo_t *pictfmt, unsigned long valuemask,
const xcb_render_create_picture_value_list_t *attr);
/// Fetch a X region and store it in a pixman region
bool x_fetch_region(session_t *ps, xcb_xfixes_region_t r, region_t *res);
void x_set_picture_clip_region(session_t *ps, xcb_render_picture_t,
int clip_x_origin, int clip_y_origin, const region_t *);
/**
* X11 error handler function.
*
* XXX consider making this error to string
*/
void
x_print_error(unsigned long serial, uint8_t major, uint8_t minor, uint8_t error_code);
xcb_pixmap_t
x_create_pixmap(session_t *ps, uint8_t depth, xcb_drawable_t drawable, uint16_t width, uint16_t height);