mutter/src/c-screen.c
Thomas James Alexander Thurman 4becc1e631 Remove double unref of stacker object. Fixes #387761.
* src/c-screen.c (meta_comp_screen_redirect): Remove double unref
        of stacker object. Fixes #387761.


svn path=/trunk/; revision=3036
2007-01-02 14:09:45 +00:00

678 lines
15 KiB
C

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2006 Red Hat, Inc.
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <config.h>
#ifdef HAVE_COMPOSITE_EXTENSIONS
#include <cm/ws.h>
#include <cm/stacker.h>
#include <cm/wsint.h>
#include <cm/drawable-node.h>
#include <cm/state.h>
#include <cm/magnifier.h>
#include <cm/square.h>
#include <string.h>
#include "screen.h"
#include "c-screen.h"
#include "c-window.h"
struct MetaCompScreen
{
WsDisplay *display;
CmStacker *stacker;
CmMagnifier *magnifier;
WsWindow *gl_window;
WsWindow *root_window;
WsScreen *screen;
MetaScreen *meta_screen;
int repaint_id;
int idle_id;
WsWindow *selection_window;
GHashTable *windows_by_xid;
};
static MetaCompWindow *
meta_comp_window_lookup (MetaCompScreen *info,
Window xid)
{
MetaCompWindow *window;
window = g_hash_table_lookup (info->windows_by_xid, (gpointer)xid);
return window;
}
MetaCompWindow *
meta_comp_screen_lookup_window (MetaCompScreen *info,
Window xwindow)
{
return meta_comp_window_lookup (info, xwindow);
}
#if 0
static void
update_frame_counter (void)
{
#define BUFSIZE 128
static GTimer *timer;
static double buffer [BUFSIZE];
static int next = 0;
if (!timer)
timer = g_timer_new ();
buffer[next++] = g_timer_elapsed (timer, NULL);
if (next == BUFSIZE)
{
int i;
double total;
next = 0;
total = 0.0;
for (i = 1; i < BUFSIZE; ++i)
total += buffer[i] - buffer[i - 1];
g_print ("frames per second: %f\n", 1 / (total / (BUFSIZE - 1)));
}
}
#endif
static void
dump_stacking_order (GList *nodes)
{
GList *list;
for (list = nodes; list != NULL; list = list->next)
{
CmDrawableNode *node = list->data;
if (node)
g_print ("%lx, ", WS_RESOURCE_XID (node->drawable));
}
g_print ("\n");
}
static gboolean
repaint (gpointer data)
{
MetaCompScreen *info = data;
CmState *state;
#if 0
g_print ("repaint\n");
#endif
glViewport (0, 0,
info->meta_screen->rect.width,
info->meta_screen->rect.height);
glLoadIdentity();
#if 0
glClearColor (0, 0, 0, 1.0);
glClear (GL_COLOR_BUFFER_BIT);
#endif
ws_window_raise (info->gl_window);
#if 0
glDisable (GL_TEXTURE_2D);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
glColor4f (0.0, 1.0, 0.0, 1.0);
glRectf (-1.0, -1.0, 1.0, 1.0);
glFinish();
#endif
state = cm_state_new ();
cm_state_disable_depth_buffer_update (state);
cm_node_render (CM_NODE (info->magnifier), state);
cm_state_enable_depth_buffer_update (state);
g_object_unref (state);
ws_window_gl_swap_buffers (info->gl_window);
glFinish();
#if 0
dump_stacking_order (info->stacker->children);
#endif
info->idle_id = 0;
return FALSE;
}
static MetaCompWindow *
find_comp_window (MetaCompScreen *info,
Window xwindow)
{
return meta_comp_window_lookup (info, xwindow);
}
static CmNode *
find_node (MetaCompScreen *info,
Window xwindow)
{
MetaCompWindow *window = meta_comp_window_lookup (info, xwindow);
if (window)
return meta_comp_window_get_node (window);
return NULL;
}
static GList *all_screen_infos;
MetaCompScreen *
meta_comp_screen_get_by_xwindow (Window xwindow)
{
GList *list;
for (list = all_screen_infos; list != NULL; list = list->next)
{
MetaCompScreen *info = list->data;
if (find_node (info, xwindow))
return info;
}
return NULL;
}
MetaCompScreen *
meta_comp_screen_new (WsDisplay *display,
MetaScreen *screen)
{
MetaCompScreen *scr_info = g_new0 (MetaCompScreen, 1);
scr_info->screen = ws_display_get_screen_from_number (
display, screen->number);
scr_info->root_window = ws_screen_get_root_window (scr_info->screen);
scr_info->display = display;
scr_info->meta_screen = screen;
scr_info->windows_by_xid = g_hash_table_new (g_direct_hash, g_direct_equal);
all_screen_infos = g_list_prepend (all_screen_infos, scr_info);
return scr_info;
}
static char *
make_selection_name (MetaCompScreen *info)
{
char *buffer;
buffer = g_strdup_printf ("_NET_WM_CM_S%d", info->meta_screen->number);
return buffer;
}
static void
on_selection_clear (WsWindow *window,
WsSelectionClearEvent *event,
gpointer data)
{
MetaCompScreen *info = data;
char *buffer = make_selection_name (info);
if (strcmp (event->selection, buffer))
{
/* We lost the selection */
meta_comp_screen_unredirect (info);
}
}
static WsWindow *
claim_selection (MetaCompScreen *info)
{
WsWindow *window = ws_window_new (info->root_window);
char *buffer = make_selection_name (info);
#if 0
g_print ("selection window: %lx\n", WS_RESOURCE_XID (window));
#endif
ws_window_own_selection (window, buffer, WS_CURRENT_TIME);
g_signal_connect (window, "selection_clear_event", G_CALLBACK (on_selection_clear), info);
g_free (buffer);
return window;
}
static void
queue_paint (CmNode *node,
MetaCompScreen *info)
{
#if 0
g_print ("queueing %s\n", G_OBJECT_TYPE_NAME (node));
#endif
meta_comp_screen_queue_paint (info);
}
void
meta_comp_screen_redirect (MetaCompScreen *info)
{
WsWindow *root = ws_screen_get_root_window (info->screen);
WsRectangle source;
WsRectangle target;
WsServerRegion *region;
int screen_w;
int screen_h;
CmSquare *square;
#if 0
g_print ("redirecting %lx\n", WS_RESOURCE_XID (root));
#endif
ws_window_redirect_subwindows (root);
info->gl_window = ws_screen_get_gl_window (info->screen);
/* FIXME: This should probably happen in libcm */
ws_window_set_override_redirect (info->gl_window, TRUE);
region = ws_server_region_new (info->display);
ws_window_set_input_shape (info->gl_window, region);
g_object_unref (G_OBJECT (region));
ws_display_begin_error_trap (info->display);
ws_window_unredirect (info->gl_window);
ws_display_end_error_trap (info->display);
info->selection_window = claim_selection (info);
ws_window_map (info->gl_window);
info->stacker = cm_stacker_new ();
square = cm_square_new (0.3, 0.3, 0.8, 1.0);
cm_stacker_add_child (info->stacker, CM_NODE (square));
g_object_unref (square);
screen_w = ws_screen_get_width (info->screen);
screen_h = ws_screen_get_height (info->screen);
#if 0
g_print ("width: %d height %d\n", screen_w, screen_h);
#endif
source.x = (screen_w - (screen_w / 4)) / 2;
source.y = screen_h / 16;
source.width = screen_w / 4;
source.height = screen_h / 16;
target.x = 0;
target.y = screen_h - screen_h / 4;
target.width = screen_w;
target.height = screen_h / 4;
info->magnifier = cm_magnifier_new (CM_NODE (info->stacker), &source, &target);
if (g_getenv ("USE_MAGNIFIER"))
cm_magnifier_set_active (info->magnifier, TRUE);
else
cm_magnifier_set_active (info->magnifier, FALSE);
info->repaint_id =
g_signal_connect (info->magnifier, "need_repaint",
G_CALLBACK (queue_paint), info);
ws_display_sync (info->display);
}
static void
listify (gpointer key,
gpointer value,
gpointer data)
{
GList **windows = data;
*windows = g_list_prepend (*windows, (gpointer)value);
}
static void
free_all_windows (MetaCompScreen *info)
{
GList *windows = NULL, *list;
g_hash_table_foreach (info->windows_by_xid, listify, &windows);
for (list = windows; list != NULL; list = list->next)
{
MetaCompWindow *window = list->data;
meta_comp_window_free (window);
}
g_list_free (windows);
}
void
meta_comp_screen_unredirect (MetaCompScreen *info)
{
WsScreen *ws_screen = info->screen;
WsWindow *root = ws_screen_get_root_window (ws_screen);
g_signal_handler_disconnect (info->magnifier, info->repaint_id);
g_object_unref (info->magnifier);
ws_window_unredirect_subwindows (root);
ws_screen_release_gl_window (ws_screen);
free_all_windows (info);
ws_display_sync (info->display);
/* FIXME: libcm needs a way to guarantee that a window is destroyed,
* without relying on ref counting having it as a side effect
*/
g_object_unref (info->selection_window);
}
void
meta_comp_screen_queue_paint (MetaCompScreen *info)
{
#if 0
g_print ("queuing\n");
#endif
if (!info->idle_id)
info->idle_id = g_idle_add (repaint, info);
}
void
meta_comp_screen_restack (MetaCompScreen *info,
Window window,
Window above_this)
{
MetaCompWindow *comp_window = find_comp_window (info, window);
MetaCompWindow *above_comp_window = find_comp_window (info, above_this);
CmNode *window_node = find_node (info, window);
CmNode *above_node = find_node (info, above_this);
if ((comp_window && meta_comp_window_stack_frozen (comp_window)) ||
(above_comp_window && meta_comp_window_stack_frozen (above_comp_window)))
{
return;
}
#if 0
dump_stacking_order (info->stacker->children);
#endif
if (window_node == above_node)
return;
if (window_node && above_this == WS_RESOURCE_XID (info->gl_window))
{
cm_stacker_raise_child (info->stacker, window_node);
}
else if (window_node && above_this == None)
{
cm_stacker_lower_child (info->stacker, window_node);
}
else if (window_node && above_node)
{
cm_stacker_restack_child (info->stacker, window_node, above_node);
}
#if 0
else
g_print ("nothing happened\n");
#endif
#if 0
g_print ("done restacking; new order:\n");
#endif
#if 0
dump_stacking_order (info->stacker->children);
#endif
}
void
meta_comp_screen_raise_window (MetaCompScreen *info,
Window window)
{
CmNode *node = find_node (info, window);
if (node)
cm_stacker_raise_child (info->stacker, node);
}
void
meta_comp_screen_set_size (MetaCompScreen *info,
Window xwindow,
gint x,
gint y,
gint width,
gint height)
{
MetaCompWindow *comp_window = meta_comp_window_lookup (info, xwindow);
if (comp_window)
{
WsRectangle rect;
rect.x = x;
rect.y = y;
rect.width = width;
rect.height = height;
meta_comp_window_set_size (comp_window, &rect);
}
}
static void
print_child_titles (WsWindow *window)
{
GList *children = ws_window_query_subwindows (window);
GList *list;
int i;
g_print ("window: %lx %s\n", WS_RESOURCE_XID (window), ws_window_query_title (window));
i = 0;
for (list = children; list != NULL; list = list->next)
{
WsWindow *child = list->data;
g_print (" %d adding: %lx %s\n", i++, WS_RESOURCE_XID (child), ws_window_query_title (child));
}
}
typedef struct
{
MetaCompScreen *cscreen;
XID xid;
} DestroyData;
static void
on_window_destroy (MetaCompWindow *comp_window,
gpointer closure)
{
DestroyData *data = closure;
CmNode *node = meta_comp_window_get_node (comp_window);
cm_stacker_remove_child (data->cscreen->stacker, node);
g_hash_table_remove (data->cscreen->windows_by_xid, (gpointer)data->xid);
}
void
meta_comp_screen_add_window (MetaCompScreen *info,
Window xwindow)
{
WsDrawable *drawable;
MetaCompWindow *comp_window;
DestroyData *data;
ws_display_begin_error_trap (info->display);
comp_window = meta_comp_window_lookup (info, xwindow);
if (comp_window)
goto out;
drawable = WS_DRAWABLE (ws_window_lookup (info->display, xwindow));
if (ws_window_query_input_only (WS_WINDOW (drawable)))
goto out;
if (WS_WINDOW (drawable) == info->gl_window ||
WS_WINDOW (drawable) == info->screen->overlay_window)
{
#if 0
g_print ("gl window\n");
#endif
goto out;
}
data = g_new (DestroyData, 1);
data->cscreen = info;
data->xid = WS_RESOURCE_XID (drawable);
comp_window = meta_comp_window_new (info->meta_screen, drawable,
on_window_destroy, data);
g_hash_table_insert (info->windows_by_xid, (gpointer)WS_RESOURCE_XID (drawable), comp_window);
cm_stacker_add_child (info->stacker, meta_comp_window_get_node (comp_window));
out:
if (comp_window)
{
/* This function is called both when windows are created and when they
* are mapped, so for now we have this silly function.
*/
meta_comp_window_refresh_attrs (comp_window);
}
ws_display_end_error_trap (info->display);
#if 0
g_print ("done checking\n");
#endif
return;
}
void
meta_comp_screen_remove_window (MetaCompScreen *info,
Window xwindow)
{
MetaCompWindow *comp_window = meta_comp_window_lookup (info, xwindow);
if (comp_window)
meta_comp_window_free (comp_window);
}
void
meta_comp_screen_set_updates (MetaCompScreen *info,
Window xwindow,
gboolean updates)
{
MetaCompWindow *comp_window = meta_comp_window_lookup (info, xwindow);
meta_comp_window_set_updates (comp_window, updates);
}
void
meta_comp_screen_set_patch (MetaCompScreen *info,
Window xwindow,
CmPoint points[4][4])
{
CmDrawableNode *node = CM_DRAWABLE_NODE (find_node (info, xwindow));
if (node)
cm_drawable_node_set_patch (node, points);
}
void
meta_comp_screen_unset_patch (MetaCompScreen *info,
Window xwindow)
{
CmDrawableNode *node = CM_DRAWABLE_NODE (find_node (info, xwindow));
if (node)
cm_drawable_node_unset_patch (node);
}
void
meta_comp_screen_set_alpha (MetaCompScreen *info,
Window xwindow,
gdouble alpha)
{
CmDrawableNode *node = CM_DRAWABLE_NODE (find_node (info, xwindow));
#if 0
g_print ("alpha: %f\n", alpha);
#endif
cm_drawable_node_set_alpha (node, alpha);
}
void
meta_comp_screen_get_real_size (MetaCompScreen *info,
Window xwindow,
WsRectangle *size)
{
CmDrawableNode *node = CM_DRAWABLE_NODE (find_node (info, xwindow));
if (!size)
return;
cm_drawable_node_get_clipbox (node, size);
}
void
meta_comp_screen_unmap (MetaCompScreen *info,
Window xwindow)
{
MetaCompWindow *window = find_comp_window (info, xwindow);
if (window)
meta_comp_window_hide (window);
}
void
meta_comp_screen_set_target_rect (MetaCompScreen *info,
Window xwindow,
WsRectangle *rect)
{
CmDrawableNode *node = CM_DRAWABLE_NODE (find_node (info, xwindow));
if (node)
cm_drawable_node_set_scale_rect (node, rect);
}
#endif