mutter/src/core/frame.h
Carlos Garnacho 82b2b76882 core: Add infrastructure to keep window frames' opaque regions
These frames client will use a visual with alpha information, and
report the opaque frame shapes through the _NET_WM_OPAQUE_REGION
window property. We can use this information in the Mutter side
for accurate opaque shapes, despite X11 windows with frames now
being seen as possibly transparent.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2758>
2023-01-20 22:23:55 +00:00

90 lines
2.7 KiB
C

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* Mutter X window decorations */
/*
* Copyright (C) 2001 Havoc Pennington
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef META_FRAME_PRIVATE_H
#define META_FRAME_PRIVATE_H
#include "core/window-private.h"
#include "x11/meta-sync-counter.h"
struct _MetaFrame
{
/* window we frame */
MetaWindow *window;
/* reparent window */
Window xwindow;
/* This rect is trusted info from where we put the
* frame, not the result of ConfigureNotify
*/
MetaRectangle rect;
MetaFrameBorders cached_borders; /* valid if borders_cached is set */
cairo_region_t *opaque_region;
MetaSyncCounter sync_counter;
/* position of client, size of frame */
int child_x;
int child_y;
int right_width;
int bottom_height;
guint borders_cached : 1;
};
void meta_window_ensure_frame (MetaWindow *window);
void meta_window_destroy_frame (MetaWindow *window);
MetaFrameFlags meta_frame_get_flags (MetaFrame *frame);
Window meta_frame_get_xwindow (MetaFrame *frame);
/* These should ONLY be called from meta_window_move_resize_internal */
void meta_frame_calc_borders (MetaFrame *frame,
MetaFrameBorders *borders);
gboolean meta_frame_sync_to_window (MetaFrame *frame,
gboolean need_resize);
void meta_frame_clear_cached_borders (MetaFrame *frame);
cairo_region_t *meta_frame_get_frame_bounds (MetaFrame *frame);
void meta_frame_get_mask (MetaFrame *frame,
cairo_rectangle_int_t *frame_rect,
cairo_t *cr);
gboolean meta_frame_handle_xevent (MetaFrame *frame,
XEvent *event);
GSubprocess * meta_frame_launch_client (MetaX11Display *x11_display,
const char *display_name);
MetaSyncCounter * meta_frame_get_sync_counter (MetaFrame *frame);
void meta_frame_set_opaque_region (MetaFrame *frame,
cairo_region_t *region);
#endif