mirror of
https://github.com/brl/mutter.git
synced 2024-12-01 12:20:47 -05:00
8c1b2d5eda
A lot of code did something similar to:
MetaFrameBorders borders;
if (window->frame)
meta_frame_calc_borders (window->frame, &borders);
else
meta_frame_borders_clear (&borders);
Sometimes, the else part was omitted and we were unknowingly using
uninitalized values for OR windows. Clean this up by just testing
for a NULL frame in meta_frame_calc_borders and clearing for the
caller if so.
https://bugzilla.gnome.org/show_bug.cgi?id=643606
434 lines
14 KiB
C
434 lines
14 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/* Mutter X window decorations */
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/*
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* Copyright (C) 2001 Havoc Pennington
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* Copyright (C) 2003, 2004 Red Hat, Inc.
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* Copyright (C) 2005 Elijah Newren
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include <config.h>
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#include "frame.h"
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#include "bell.h"
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#include <meta/errors.h>
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#include "keybindings-private.h"
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#include <X11/extensions/Xrender.h>
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#define EVENT_MASK (SubstructureRedirectMask | \
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StructureNotifyMask | SubstructureNotifyMask | \
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ExposureMask | \
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ButtonPressMask | ButtonReleaseMask | \
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PointerMotionMask | PointerMotionHintMask | \
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EnterWindowMask | LeaveWindowMask | \
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FocusChangeMask | \
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ColormapChangeMask)
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void
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meta_window_ensure_frame (MetaWindow *window)
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{
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MetaFrame *frame;
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XSetWindowAttributes attrs;
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Visual *visual;
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gulong create_serial;
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if (window->frame)
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return;
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/* See comment below for why this is required. */
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meta_display_grab (window->display);
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frame = g_new (MetaFrame, 1);
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frame->window = window;
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frame->xwindow = None;
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frame->rect = window->rect;
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frame->child_x = 0;
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frame->child_y = 0;
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frame->bottom_height = 0;
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frame->right_width = 0;
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frame->current_cursor = 0;
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frame->mapped = FALSE;
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frame->is_flashing = FALSE;
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meta_verbose ("Framing window %s: visual %s default, depth %d default depth %d\n",
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window->desc,
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XVisualIDFromVisual (window->xvisual) ==
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XVisualIDFromVisual (window->screen->default_xvisual) ?
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"is" : "is not",
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window->depth, window->screen->default_depth);
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meta_verbose ("Frame geometry %d,%d %dx%d\n",
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frame->rect.x, frame->rect.y,
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frame->rect.width, frame->rect.height);
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/* Default depth/visual handles clients with weird visuals; they can
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* always be children of the root depth/visual obviously, but
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* e.g. DRI games can't be children of a parent that has the same
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* visual as the client. NULL means default visual.
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*
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* We look for an ARGB visual if we can find one, otherwise use
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* the default of NULL.
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*/
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/* Special case for depth 32 windows (assumed to be ARGB),
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* we use the window's visual. Otherwise we just use the system visual.
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*/
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if (window->depth == 32)
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visual = window->xvisual;
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else
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visual = NULL;
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frame->xwindow = meta_ui_create_frame_window (window->screen->ui,
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window->display->xdisplay,
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visual,
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frame->rect.x,
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frame->rect.y,
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frame->rect.width,
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frame->rect.height,
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frame->window->screen->number,
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&create_serial);
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meta_stack_tracker_record_add (window->screen->stack_tracker,
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frame->xwindow,
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create_serial);
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meta_verbose ("Frame for %s is 0x%lx\n", frame->window->desc, frame->xwindow);
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attrs.event_mask = EVENT_MASK;
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XChangeWindowAttributes (window->display->xdisplay,
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frame->xwindow, CWEventMask, &attrs);
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meta_display_register_x_window (window->display, &frame->xwindow, window);
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/* Reparent the client window; it may be destroyed,
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* thus the error trap. We'll get a destroy notify later
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* and free everything. Comment in FVWM source code says
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* we need a server grab or the child can get its MapNotify
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* before we've finished reparenting and getting the decoration
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* window onscreen, so ensure_frame must be called with
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* a grab.
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*/
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meta_error_trap_push (window->display);
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if (window->mapped)
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{
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window->mapped = FALSE; /* the reparent will unmap the window,
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* we don't want to take that as a withdraw
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*/
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meta_topic (META_DEBUG_WINDOW_STATE,
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"Incrementing unmaps_pending on %s for reparent\n", window->desc);
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window->unmaps_pending += 1;
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}
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/* window was reparented to this position */
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window->rect.x = 0;
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window->rect.y = 0;
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meta_stack_tracker_record_remove (window->screen->stack_tracker,
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window->xwindow,
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XNextRequest (window->display->xdisplay));
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XReparentWindow (window->display->xdisplay,
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window->xwindow,
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frame->xwindow,
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window->rect.x,
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window->rect.y);
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/* FIXME handle this error */
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meta_error_trap_pop (window->display);
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/* stick frame to the window */
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window->frame = frame;
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/* Now that frame->xwindow is registered with window, we can set its
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* style and background.
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*/
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meta_ui_update_frame_style (window->screen->ui, frame->xwindow);
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meta_ui_reset_frame_bg (window->screen->ui, frame->xwindow);
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if (window->title)
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meta_ui_set_frame_title (window->screen->ui,
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window->frame->xwindow,
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window->title);
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/* Move keybindings to frame instead of window */
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meta_window_grab_keys (window);
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meta_display_ungrab (window->display);
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}
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void
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meta_window_destroy_frame (MetaWindow *window)
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{
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MetaFrame *frame;
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MetaFrameBorders borders;
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if (window->frame == NULL)
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return;
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meta_verbose ("Unframing window %s\n", window->desc);
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frame = window->frame;
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meta_frame_calc_borders (frame, &borders);
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meta_bell_notify_frame_destroy (frame);
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/* Unparent the client window; it may be destroyed,
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* thus the error trap.
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*/
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meta_error_trap_push (window->display);
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if (window->mapped)
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{
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window->mapped = FALSE; /* Keep track of unmapping it, so we
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* can identify a withdraw initiated
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* by the client.
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*/
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meta_topic (META_DEBUG_WINDOW_STATE,
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"Incrementing unmaps_pending on %s for reparent back to root\n", window->desc);
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window->unmaps_pending += 1;
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}
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meta_stack_tracker_record_add (window->screen->stack_tracker,
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window->xwindow,
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XNextRequest (window->display->xdisplay));
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XReparentWindow (window->display->xdisplay,
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window->xwindow,
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window->screen->xroot,
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/* Using anything other than meta_window_get_position()
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* coordinates here means we'll need to ensure a configure
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* notify event is sent; see bug 399552.
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*/
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window->frame->rect.x + borders.invisible.left,
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window->frame->rect.y + borders.invisible.top);
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meta_error_trap_pop (window->display);
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meta_ui_destroy_frame_window (window->screen->ui, frame->xwindow);
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meta_display_unregister_x_window (window->display,
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frame->xwindow);
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window->frame = NULL;
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if (window->frame_bounds)
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{
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cairo_region_destroy (window->frame_bounds);
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window->frame_bounds = NULL;
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}
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/* Move keybindings to window instead of frame */
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meta_window_grab_keys (window);
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g_free (frame);
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/* Put our state back where it should be */
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meta_window_queue (window, META_QUEUE_CALC_SHOWING);
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meta_window_queue (window, META_QUEUE_MOVE_RESIZE);
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}
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MetaFrameFlags
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meta_frame_get_flags (MetaFrame *frame)
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{
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MetaFrameFlags flags;
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flags = 0;
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if (frame->window->border_only)
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{
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; /* FIXME this may disable the _function_ as well as decor
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* in some cases, which is sort of wrong.
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*/
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}
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else
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{
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flags |= META_FRAME_ALLOWS_MENU;
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if (frame->window->has_close_func)
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flags |= META_FRAME_ALLOWS_DELETE;
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if (frame->window->has_maximize_func)
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flags |= META_FRAME_ALLOWS_MAXIMIZE;
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if (frame->window->has_minimize_func)
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flags |= META_FRAME_ALLOWS_MINIMIZE;
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if (frame->window->has_shade_func)
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flags |= META_FRAME_ALLOWS_SHADE;
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}
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if (META_WINDOW_ALLOWS_MOVE (frame->window))
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flags |= META_FRAME_ALLOWS_MOVE;
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if (META_WINDOW_ALLOWS_HORIZONTAL_RESIZE (frame->window))
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flags |= META_FRAME_ALLOWS_HORIZONTAL_RESIZE;
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if (META_WINDOW_ALLOWS_VERTICAL_RESIZE (frame->window))
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flags |= META_FRAME_ALLOWS_VERTICAL_RESIZE;
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if (meta_window_appears_focused (frame->window))
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flags |= META_FRAME_HAS_FOCUS;
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if (frame->window->shaded)
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flags |= META_FRAME_SHADED;
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if (frame->window->on_all_workspaces_requested)
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flags |= META_FRAME_STUCK;
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/* FIXME: Should we have some kind of UI for windows that are just vertically
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* maximized or just horizontally maximized?
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*/
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if (META_WINDOW_MAXIMIZED (frame->window))
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flags |= META_FRAME_MAXIMIZED;
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if (META_WINDOW_TILED_LEFT (frame->window))
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flags |= META_FRAME_TILED_LEFT;
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if (META_WINDOW_TILED_RIGHT (frame->window))
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flags |= META_FRAME_TILED_RIGHT;
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if (frame->window->fullscreen)
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flags |= META_FRAME_FULLSCREEN;
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if (frame->is_flashing)
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flags |= META_FRAME_IS_FLASHING;
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if (frame->window->wm_state_above)
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flags |= META_FRAME_ABOVE;
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return flags;
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}
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void
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meta_frame_borders_clear (MetaFrameBorders *self)
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{
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self->visible.top = self->invisible.top = self->total.top = 0;
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self->visible.bottom = self->invisible.bottom = self->total.bottom = 0;
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self->visible.left = self->invisible.left = self->total.left = 0;
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self->visible.right = self->invisible.right = self->total.right = 0;
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}
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void
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meta_frame_calc_borders (MetaFrame *frame,
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MetaFrameBorders *borders)
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{
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/* Save on if statements and potential uninitialized values
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* in callers -- if there's no frame, then zero the borders. */
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if (frame == NULL)
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meta_frame_borders_clear (borders);
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else
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meta_ui_get_frame_borders (frame->window->screen->ui,
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frame->xwindow,
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borders);
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}
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void
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meta_frame_get_corner_radiuses (MetaFrame *frame,
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float *top_left,
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float *top_right,
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float *bottom_left,
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float *bottom_right)
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{
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meta_ui_get_corner_radiuses (frame->window->screen->ui,
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frame->xwindow,
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top_left, top_right,
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bottom_left, bottom_right);
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}
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gboolean
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meta_frame_sync_to_window (MetaFrame *frame,
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int resize_gravity,
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gboolean need_move,
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gboolean need_resize)
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{
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meta_topic (META_DEBUG_GEOMETRY,
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"Syncing frame geometry %d,%d %dx%d (SE: %d,%d)\n",
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frame->rect.x, frame->rect.y,
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frame->rect.width, frame->rect.height,
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frame->rect.x + frame->rect.width,
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frame->rect.y + frame->rect.height);
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/* set bg to none to avoid flicker */
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if (need_resize)
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{
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meta_ui_unflicker_frame_bg (frame->window->screen->ui,
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frame->xwindow,
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frame->rect.width,
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frame->rect.height);
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}
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meta_ui_move_resize_frame (frame->window->screen->ui,
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frame->xwindow,
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frame->rect.x,
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frame->rect.y,
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frame->rect.width,
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frame->rect.height);
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if (need_resize)
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{
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meta_ui_reset_frame_bg (frame->window->screen->ui,
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frame->xwindow);
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/* If we're interactively resizing the frame, repaint
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* it immediately so we don't start to lag.
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*/
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if (frame->window->display->grab_window ==
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frame->window)
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meta_ui_repaint_frame (frame->window->screen->ui,
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frame->xwindow);
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}
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return need_resize;
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}
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cairo_region_t *
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meta_frame_get_frame_bounds (MetaFrame *frame)
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{
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return meta_ui_get_frame_bounds (frame->window->screen->ui,
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frame->xwindow,
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frame->rect.width,
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frame->rect.height);
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}
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void
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meta_frame_queue_draw (MetaFrame *frame)
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{
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meta_ui_queue_frame_draw (frame->window->screen->ui,
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frame->xwindow);
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}
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void
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meta_frame_set_screen_cursor (MetaFrame *frame,
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MetaCursor cursor)
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{
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Cursor xcursor;
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if (cursor == frame->current_cursor)
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return;
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frame->current_cursor = cursor;
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if (cursor == META_CURSOR_DEFAULT)
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XUndefineCursor (frame->window->display->xdisplay, frame->xwindow);
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else
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{
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xcursor = meta_display_create_x_cursor (frame->window->display, cursor);
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XDefineCursor (frame->window->display->xdisplay, frame->xwindow, xcursor);
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XFlush (frame->window->display->xdisplay);
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XFreeCursor (frame->window->display->xdisplay, xcursor);
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}
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}
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Window
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meta_frame_get_xwindow (MetaFrame *frame)
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{
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return frame->xwindow;
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}
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