2ad19c70ce
The g_print documentation explicitly says not to do this, since g_print is meant to be redirected by applications. Instead use g_message for logging that can be triggered via GTK_DEBUG.
645 lines
17 KiB
C
645 lines
17 KiB
C
/*
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* Copyright © 2001, 2007 Red Hat, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Red Hat not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. Red Hat makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* RED HAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL RED HAT
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* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Owen Taylor, Red Hat, Inc.
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*/
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#include "config.h"
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#include "xsettings-client.h"
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#include <gdk/x11/gdkx11display.h>
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#include <gdk/x11/gdkx11property.h>
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#include <gdk/x11/gdkx11screen.h>
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#include <gdk/x11/gdkx11window.h>
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#include <gdk/x11/gdkprivate-x11.h>
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#include <gdk/x11/gdkscreen-x11.h>
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#include <gdkinternals.h>
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#include <string.h>
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#include <X11/Xlib.h>
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#include <X11/Xmd.h> /* For CARD16 */
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#include "gdksettings.c"
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/* Types of settings possible. Enum values correspond to
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* protocol values.
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*/
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typedef enum
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{
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XSETTINGS_TYPE_INT = 0,
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XSETTINGS_TYPE_STRING = 1,
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XSETTINGS_TYPE_COLOR = 2
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} XSettingsType;
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typedef struct _XSettingsBuffer XSettingsBuffer;
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struct _XSettingsBuffer
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{
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char byte_order;
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size_t len;
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unsigned char *data;
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unsigned char *pos;
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};
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static void
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gdk_xsettings_notify (GdkX11Screen *x11_screen,
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const char *name,
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GdkSettingAction action)
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{
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GdkEvent new_event;
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if (!g_str_has_prefix (name, "gtk-"))
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return;
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new_event.type = GDK_SETTING;
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new_event.setting.window = gdk_screen_get_root_window (GDK_SCREEN (x11_screen));
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new_event.setting.send_event = FALSE;
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new_event.setting.action = action;
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new_event.setting.name = (char*) name;
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gdk_event_put (&new_event);
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}
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static gboolean
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value_equal (const GValue *value_a,
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const GValue *value_b)
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{
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if (G_VALUE_TYPE (value_a) != G_VALUE_TYPE (value_b))
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return FALSE;
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switch (G_VALUE_TYPE (value_a))
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{
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case G_TYPE_INT:
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return g_value_get_int (value_a) == g_value_get_int (value_b);
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case XSETTINGS_TYPE_COLOR:
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return gdk_rgba_equal (g_value_get_boxed (value_a), g_value_get_boxed (value_b));
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case G_TYPE_STRING:
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return g_str_equal (g_value_get_string (value_a), g_value_get_string (value_b));
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default:
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g_warning ("unable to compare values of type %s", g_type_name (G_VALUE_TYPE (value_a)));
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return FALSE;
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}
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}
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static void
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notify_changes (GdkX11Screen *x11_screen,
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GHashTable *old_list)
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{
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GHashTableIter iter;
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GValue *setting, *old_setting;
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const char *name;
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if (x11_screen->xsettings != NULL)
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{
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g_hash_table_iter_init (&iter, x11_screen->xsettings);
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while (g_hash_table_iter_next (&iter, (gpointer *) &name, (gpointer*) &setting))
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{
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old_setting = old_list ? g_hash_table_lookup (old_list, name) : NULL;
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if (old_setting == NULL)
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gdk_xsettings_notify (x11_screen, name, GDK_SETTING_ACTION_NEW);
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else if (!value_equal (setting, old_setting))
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gdk_xsettings_notify (x11_screen, name, GDK_SETTING_ACTION_CHANGED);
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/* remove setting from old_list */
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if (old_setting != NULL)
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g_hash_table_remove (old_list, name);
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}
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}
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if (old_list != NULL)
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{
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/* old_list now contains only deleted settings */
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g_hash_table_iter_init (&iter, old_list);
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while (g_hash_table_iter_next (&iter, (gpointer *) &name, (gpointer*) &old_setting))
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gdk_xsettings_notify (x11_screen, name, GDK_SETTING_ACTION_DELETED);
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}
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}
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#define BYTES_LEFT(buffer) ((buffer)->data + (buffer)->len - (buffer)->pos)
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#define return_if_fail_bytes(buffer, n_bytes) G_STMT_START{ \
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if (BYTES_LEFT (buffer) < (n_bytes)) \
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{ \
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g_warning ("Invalid XSETTINGS property (read off end: Expected %u bytes, only %ld left", \
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(n_bytes), BYTES_LEFT (buffer)); \
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return FALSE; \
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} \
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}G_STMT_END
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static gboolean
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fetch_card16 (XSettingsBuffer *buffer,
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CARD16 *result)
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{
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CARD16 x;
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return_if_fail_bytes (buffer, 2);
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x = *(CARD16 *)buffer->pos;
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buffer->pos += 2;
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if (buffer->byte_order == MSBFirst)
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*result = GUINT16_FROM_BE (x);
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else
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*result = GUINT16_FROM_LE (x);
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return TRUE;
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}
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static gboolean
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fetch_ushort (XSettingsBuffer *buffer,
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unsigned short *result)
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{
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CARD16 x;
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gboolean r;
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r = fetch_card16 (buffer, &x);
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if (r)
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*result = x;
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return r;
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}
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static gboolean
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fetch_card32 (XSettingsBuffer *buffer,
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CARD32 *result)
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{
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CARD32 x;
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return_if_fail_bytes (buffer, 4);
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x = *(CARD32 *)buffer->pos;
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buffer->pos += 4;
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if (buffer->byte_order == MSBFirst)
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*result = GUINT32_FROM_BE (x);
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else
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*result = GUINT32_FROM_LE (x);
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return TRUE;
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}
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static gboolean
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fetch_card8 (XSettingsBuffer *buffer,
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CARD8 *result)
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{
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return_if_fail_bytes (buffer, 1);
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*result = *(CARD8 *)buffer->pos;
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buffer->pos += 1;
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return TRUE;
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}
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#define XSETTINGS_PAD(n,m) ((n + m - 1) & (~(m-1)))
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static gboolean
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fetch_string (XSettingsBuffer *buffer,
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guint length,
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char **result)
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{
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guint pad_len;
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pad_len = XSETTINGS_PAD (length, 4);
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if (pad_len < length) /* guard against overflow */
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{
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g_warning ("Invalid XSETTINGS property (overflow in string length)");
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return FALSE;
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}
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return_if_fail_bytes (buffer, pad_len);
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*result = g_strndup ((char *) buffer->pos, length);
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buffer->pos += pad_len;
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return TRUE;
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}
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static void
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free_value (gpointer data)
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{
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GValue *value = data;
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g_value_unset (value);
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g_free (value);
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}
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static GHashTable *
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parse_settings (unsigned char *data,
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size_t len)
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{
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XSettingsBuffer buffer;
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GHashTable *settings = NULL;
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CARD32 serial;
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CARD32 n_entries;
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CARD32 i;
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GValue *value = NULL;
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char *x_name = NULL;
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const char *gdk_name;
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buffer.pos = buffer.data = data;
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buffer.len = len;
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if (!fetch_card8 (&buffer, (unsigned char *)&buffer.byte_order))
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goto out;
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if (buffer.byte_order != MSBFirst &&
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buffer.byte_order != LSBFirst)
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{
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g_warning ("Invalid XSETTINGS property (unknown byte order %u)", buffer.byte_order);
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goto out;
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}
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buffer.pos += 3;
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if (!fetch_card32 (&buffer, &serial) ||
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!fetch_card32 (&buffer, &n_entries))
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goto out;
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GDK_NOTE(SETTINGS, g_message ("reading %u settings (serial %u byte order %u)", n_entries, serial, buffer.byte_order));
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for (i = 0; i < n_entries; i++)
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{
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CARD8 type;
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CARD16 name_len;
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CARD32 v_int;
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if (!fetch_card8 (&buffer, &type))
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goto out;
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buffer.pos += 1;
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if (!fetch_card16 (&buffer, &name_len))
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goto out;
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if (!fetch_string (&buffer, name_len, &x_name) ||
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/* last change serial (we ignore it) */
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!fetch_card32 (&buffer, &v_int))
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goto out;
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switch (type)
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{
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case XSETTINGS_TYPE_INT:
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if (!fetch_card32 (&buffer, &v_int))
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goto out;
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value = g_new0 (GValue, 1);
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g_value_init (value, G_TYPE_INT);
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g_value_set_int (value, (gint32) v_int);
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GDK_NOTE(SETTINGS, g_message (" %s = %d", x_name, (gint32) v_int));
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break;
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case XSETTINGS_TYPE_STRING:
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{
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char *s;
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if (!fetch_card32 (&buffer, &v_int) ||
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!fetch_string (&buffer, v_int, &s))
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goto out;
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value = g_new0 (GValue, 1);
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g_value_init (value, G_TYPE_STRING);
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g_value_take_string (value, s);
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GDK_NOTE(SETTINGS, g_message (" %s = \"%s\"", x_name, s));
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}
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break;
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case XSETTINGS_TYPE_COLOR:
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{
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unsigned short red, green, blue, alpha;
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GdkRGBA rgba;
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if (!fetch_ushort (&buffer, &red) ||
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!fetch_ushort (&buffer, &green) ||
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!fetch_ushort (&buffer, &blue) ||
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!fetch_ushort (&buffer, &alpha))
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goto out;
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rgba.red = red / 65535.0;
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rgba.green = green / 65535.0;
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rgba.blue = blue / 65535.0;
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rgba.alpha = alpha / 65535.0;
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value = g_new0 (GValue, 1);
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g_value_init (value, G_TYPE_STRING);
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g_value_set_boxed (value, &rgba);
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GDK_NOTE(SETTINGS, g_message (" %s = #%02X%02X%02X%02X", x_name, alpha,red, green, blue));
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}
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break;
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default:
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/* Quietly ignore unknown types */
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GDK_NOTE(SETTINGS, g_message (" %s = ignored (unknown type %u)", x_name, type));
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break;
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}
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gdk_name = gdk_from_xsettings_name (x_name);
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g_free (x_name);
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x_name = NULL;
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if (gdk_name == NULL)
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{
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GDK_NOTE(SETTINGS, g_message (" ==> unknown to GTK"));
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free_value (value);
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}
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else
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{
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GDK_NOTE(SETTINGS, g_message (" ==> storing as '%s'", gdk_name));
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if (settings == NULL)
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settings = g_hash_table_new_full (g_str_hash, g_str_equal,
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NULL,
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free_value);
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if (g_hash_table_lookup (settings, gdk_name) != NULL)
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{
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g_warning ("Invalid XSETTINGS property (Duplicate entry for '%s')", gdk_name);
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goto out;
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}
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g_hash_table_insert (settings, (gpointer) gdk_name, value);
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}
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value = NULL;
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}
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return settings;
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out:
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if (value)
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free_value (value);
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if (settings)
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g_hash_table_unref (settings);
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g_free (x_name);
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return NULL;
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}
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static void
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read_settings (GdkX11Screen *x11_screen,
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gboolean do_notify)
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{
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GdkScreen *screen = GDK_SCREEN (x11_screen);
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Atom type;
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int format;
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unsigned long n_items;
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unsigned long bytes_after;
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unsigned char *data;
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int result;
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GHashTable *old_list = x11_screen->xsettings;
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GValue value = G_VALUE_INIT;
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GValue *setting, *copy;
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x11_screen->xsettings = NULL;
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if (x11_screen->xsettings_manager_window)
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{
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GdkDisplay *display = x11_screen->display;
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Atom xsettings_atom = gdk_x11_get_xatom_by_name_for_display (display, "_XSETTINGS_SETTINGS");
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gdk_x11_display_error_trap_push (display);
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result = XGetWindowProperty (gdk_x11_display_get_xdisplay (display),
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gdk_x11_window_get_xid (x11_screen->xsettings_manager_window),
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xsettings_atom, 0, LONG_MAX,
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False, xsettings_atom,
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&type, &format, &n_items, &bytes_after, &data);
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gdk_x11_display_error_trap_pop_ignored (display);
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if (result == Success && type != None)
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{
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if (type != xsettings_atom)
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{
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g_warning ("Invalid type for XSETTINGS property: %s", gdk_x11_get_xatom_name_for_display (display, type));
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}
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else if (format != 8)
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{
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g_warning ("Invalid format for XSETTINGS property: %d", format);
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}
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else
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x11_screen->xsettings = parse_settings (data, n_items);
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XFree (data);
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}
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}
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/* Since we support scaling we look at the specific Gdk/UnscaledDPI
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setting if it exists and use that instead of Xft/DPI if it is set */
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if (x11_screen->xsettings && !x11_screen->fixed_window_scale)
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{
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setting = g_hash_table_lookup (x11_screen->xsettings, "gdk-unscaled-dpi");
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if (setting)
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{
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copy = g_new0 (GValue, 1);
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g_value_init (copy, G_VALUE_TYPE (setting));
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g_value_copy (setting, copy);
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g_hash_table_insert (x11_screen->xsettings,
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"gtk-xft-dpi", copy);
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}
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}
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if (do_notify)
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notify_changes (x11_screen, old_list);
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if (old_list)
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g_hash_table_unref (old_list);
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g_value_init (&value, G_TYPE_INT);
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if (!screen->resolution_set)
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{
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/* This code is duplicated with gtksettings.c:settings_update_resolution().
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* The update of the screen resolution needs to happen immediately when
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* gdk_x11_display_set_window_scale() is called, and not wait for events
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* to be processed, so we can't always handling it in gtksettings.c.
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* But we can't always handle it here because the DPI can be set through
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* GtkSettings, which we don't have access to.
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*/
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int dpi_int = 0;
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double dpi;
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const char *scale_env;
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double scale;
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if (gdk_screen_get_setting (GDK_SCREEN (x11_screen),
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"gtk-xft-dpi", &value))
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dpi_int = g_value_get_int (&value);
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if (dpi_int > 0)
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dpi = dpi_int / 1024.;
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else
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dpi = -1.;
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scale_env = g_getenv ("GDK_DPI_SCALE");
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if (scale_env)
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{
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scale = g_ascii_strtod (scale_env, NULL);
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if (scale != 0 && dpi > 0)
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dpi *= scale;
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}
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_gdk_screen_set_resolution (screen, dpi);
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}
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if (!x11_screen->fixed_window_scale &&
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gdk_screen_get_setting (GDK_SCREEN (x11_screen),
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"gdk-window-scaling-factor", &value))
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_gdk_x11_screen_set_window_scale (x11_screen,
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g_value_get_int (&value));
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}
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static Atom
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get_selection_atom (GdkX11Screen *x11_screen)
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{
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return _gdk_x11_get_xatom_for_display_printf (x11_screen->display, "_XSETTINGS_S%d", x11_screen->screen_num);
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}
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static GdkFilterReturn
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gdk_xsettings_manager_window_filter (GdkXEvent *xevent,
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GdkEvent *event,
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gpointer data);
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static void
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check_manager_window (GdkX11Screen *x11_screen,
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gboolean notify_changes)
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{
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GdkDisplay *display;
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Display *xdisplay;
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Window manager_window_xid;
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display = x11_screen->display;
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xdisplay = gdk_x11_display_get_xdisplay (display);
|
|
|
|
if (x11_screen->xsettings_manager_window)
|
|
{
|
|
gdk_window_remove_filter (x11_screen->xsettings_manager_window, gdk_xsettings_manager_window_filter, x11_screen);
|
|
g_object_unref (x11_screen->xsettings_manager_window);
|
|
}
|
|
|
|
gdk_x11_display_grab (display);
|
|
|
|
manager_window_xid = XGetSelectionOwner (xdisplay, get_selection_atom (x11_screen));
|
|
x11_screen->xsettings_manager_window = gdk_x11_window_foreign_new_for_display (display,
|
|
manager_window_xid);
|
|
/* XXX: Can't use gdk_window_set_events() here because the first call to this
|
|
* function happens too early in gdk_init() */
|
|
if (x11_screen->xsettings_manager_window)
|
|
XSelectInput (xdisplay,
|
|
gdk_x11_window_get_xid (x11_screen->xsettings_manager_window),
|
|
PropertyChangeMask | StructureNotifyMask);
|
|
|
|
gdk_x11_display_ungrab (display);
|
|
|
|
gdk_display_flush (display);
|
|
|
|
if (x11_screen->xsettings_manager_window)
|
|
{
|
|
gdk_window_add_filter (x11_screen->xsettings_manager_window, gdk_xsettings_manager_window_filter, x11_screen);
|
|
}
|
|
|
|
read_settings (x11_screen, notify_changes);
|
|
}
|
|
|
|
static GdkFilterReturn
|
|
gdk_xsettings_root_window_filter (GdkXEvent *xevent,
|
|
GdkEvent *event,
|
|
gpointer data)
|
|
{
|
|
GdkX11Screen *x11_screen = data;
|
|
GdkDisplay *display = x11_screen->display;
|
|
XEvent *xev = xevent;
|
|
|
|
/* The checks here will not unlikely cause us to reread
|
|
* the properties from the manager window a number of
|
|
* times when the manager changes from A->B. But manager changes
|
|
* are going to be pretty rare.
|
|
*/
|
|
if (xev->xany.type == ClientMessage &&
|
|
xev->xclient.message_type == gdk_x11_get_xatom_by_name_for_display (display, "MANAGER") &&
|
|
xev->xclient.data.l[1] == get_selection_atom (x11_screen))
|
|
{
|
|
check_manager_window (x11_screen, TRUE);
|
|
return GDK_FILTER_REMOVE;
|
|
}
|
|
|
|
return GDK_FILTER_CONTINUE;
|
|
}
|
|
|
|
static GdkFilterReturn
|
|
gdk_xsettings_manager_window_filter (GdkXEvent *xevent,
|
|
GdkEvent *event,
|
|
gpointer data)
|
|
{
|
|
GdkX11Screen *x11_screen = data;
|
|
XEvent *xev = xevent;
|
|
|
|
if (xev->xany.type == DestroyNotify)
|
|
{
|
|
check_manager_window (x11_screen, TRUE);
|
|
/* let GDK do its cleanup */
|
|
return GDK_FILTER_CONTINUE;
|
|
}
|
|
else if (xev->xany.type == PropertyNotify)
|
|
{
|
|
read_settings (x11_screen, TRUE);
|
|
return GDK_FILTER_REMOVE;
|
|
}
|
|
|
|
return GDK_FILTER_CONTINUE;;
|
|
}
|
|
|
|
void
|
|
_gdk_x11_xsettings_init (GdkX11Screen *x11_screen)
|
|
{
|
|
gdk_window_add_filter (gdk_screen_get_root_window (GDK_SCREEN (x11_screen)), gdk_xsettings_root_window_filter, x11_screen);
|
|
|
|
check_manager_window (x11_screen, FALSE);
|
|
}
|
|
|
|
void
|
|
_gdk_x11_settings_force_reread (GdkX11Screen *x11_screen)
|
|
{
|
|
read_settings (x11_screen, TRUE);
|
|
}
|
|
|
|
void
|
|
_gdk_x11_xsettings_finish (GdkX11Screen *x11_screen)
|
|
{
|
|
gdk_window_remove_filter (gdk_screen_get_root_window (GDK_SCREEN (x11_screen)), gdk_xsettings_root_window_filter, x11_screen);
|
|
if (x11_screen->xsettings_manager_window)
|
|
{
|
|
gdk_window_remove_filter (x11_screen->xsettings_manager_window, gdk_xsettings_manager_window_filter, x11_screen);
|
|
g_object_unref (x11_screen->xsettings_manager_window);
|
|
x11_screen->xsettings_manager_window = NULL;
|
|
}
|
|
|
|
if (x11_screen->xsettings)
|
|
{
|
|
g_hash_table_unref (x11_screen->xsettings);
|
|
x11_screen->xsettings = NULL;
|
|
}
|
|
}
|
|
|