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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
*
* Copyright (C) 2005-2009 Richard Hughes <richard@hughsie.com>
* Copyright (C) 2005 William Jon McCann <mccann@jhu.edu>
*
* Licensed under the GNU General Public License Version 2
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <errno.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <math.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_H */
#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <libupower-glib/upower.h>
#include "gpm-button.h"
#include "gpm-backlight.h"
#include "gpm-brightness.h"
#include "gpm-control.h"
#include "gpm-common.h"
#include "egg-debug.h"
#include "gsd-media-keys-window.h"
#include "gpm-dpms.h"
#include "gpm-idle.h"
#include "gpm-marshal.h"
#include "gpm-icon-names.h"
#include "egg-console-kit.h"
struct GpmBacklightPrivate
{
UpClient *client;
GpmBrightness *brightness;
GpmButton *button;
GSettings *settings;
GtkWidget *popup;
GpmControl *control;
GpmDpms *dpms;
GpmIdle *idle;
EggConsoleKit *console;
gboolean can_dim;
gboolean system_is_idle;
GTimer *idle_timer;
guint idle_dim_timeout;
guint master_percentage;
};
enum {
BRIGHTNESS_CHANGED,
LAST_SIGNAL
};
static guint signals [LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_PRIVATE (GpmBacklight, gpm_backlight, G_TYPE_OBJECT)
/**
* gpm_backlight_error_quark:
* Return value: Our personal error quark.
**/
GQuark
gpm_backlight_error_quark (void)
{
static GQuark quark = 0;
if (!quark)
quark = g_quark_from_static_string ("gpm_backlight_error");
return quark;
}
/**
* gpm_backlight_get_brightness:
**/
gboolean
gpm_backlight_get_brightness (GpmBacklight *backlight, guint *brightness, GError **error)
{
guint level;
gboolean ret;
g_return_val_if_fail (backlight != NULL, FALSE);
g_return_val_if_fail (GPM_IS_BACKLIGHT (backlight), FALSE);
g_return_val_if_fail (brightness != NULL, FALSE);
/* check if we have the hw */
if (backlight->priv->can_dim == FALSE) {
g_set_error_literal (error, gpm_backlight_error_quark (),
GPM_BACKLIGHT_ERROR_HARDWARE_NOT_PRESENT,
"Dim capable hardware not present");
return FALSE;
}
/* gets the current brightness */
ret = gpm_brightness_get (backlight->priv->brightness, &level);
if (ret) {
*brightness = level;
} else {
g_set_error_literal (error, gpm_backlight_error_quark (),
GPM_BACKLIGHT_ERROR_DATA_NOT_AVAILABLE,
"Data not available");
}
return ret;
}
/**
* gpm_backlight_set_brightness:
**/
gboolean
gpm_backlight_set_brightness (GpmBacklight *backlight, guint percentage, GError **error)
{
gboolean ret;
gboolean hw_changed;
g_return_val_if_fail (backlight != NULL, FALSE);
g_return_val_if_fail (GPM_IS_BACKLIGHT (backlight), FALSE);
/* check if we have the hw */
if (backlight->priv->can_dim == FALSE) {
g_set_error_literal (error, gpm_backlight_error_quark (),
GPM_BACKLIGHT_ERROR_HARDWARE_NOT_PRESENT,
"Dim capable hardware not present");
return FALSE;
}
/* just set the master percentage for now, don't try to be clever */
backlight->priv->master_percentage = percentage;
/* sets the current policy brightness */
ret = gpm_brightness_set (backlight->priv->brightness, percentage, &hw_changed);
if (!ret) {
g_set_error_literal (error, gpm_backlight_error_quark (),
GPM_BACKLIGHT_ERROR_GENERAL,
"Cannot set policy brightness");
}
/* we emit a signal for the brightness applet */
if (ret && hw_changed) {
egg_debug ("emitting brightness-changed : %i", percentage);
g_signal_emit (backlight, signals [BRIGHTNESS_CHANGED], 0, percentage);
}
return ret;
}
/**
* gpm_backlight_dialog_init:
*
* Initialises the popup, and makes sure that it matches the compositing of the screen.
**/
static void
gpm_backlight_dialog_init (GpmBacklight *backlight)
{
if (backlight->priv->popup != NULL
&& !msd_osd_window_is_valid (MSD_OSD_WINDOW (backlight->priv->popup))) {
gtk_widget_destroy (backlight->priv->popup);
backlight->priv->popup = NULL;
}
if (backlight->priv->popup == NULL) {
backlight->priv->popup= msd_media_keys_window_new ();
msd_media_keys_window_set_action_custom (MSD_MEDIA_KEYS_WINDOW (backlight->priv->popup),
"gpm-brightness-lcd",
TRUE);
gtk_window_set_position (GTK_WINDOW (backlight->priv->popup), GTK_WIN_POS_NONE);
}
}
/**
* gpm_backlight_dialog_show:
*
* Show the brightness popup, and place it nicely on the screen.
**/
static void
gpm_backlight_dialog_show (GpmBacklight *backlight)
{
int orig_w;
int orig_h;
int screen_w;
int screen_h;
int x;
int y;
int pointer_x;
int pointer_y;
GtkRequisition win_req;
GdkScreen *pointer_screen;
GdkRectangle geometry;
GdkMonitor *monitor;
GdkDisplay *display;
GdkSeat *seat;
GdkDevice *device;
/*
* get the window size
* if the window hasn't been mapped, it doesn't necessarily
* know its true size, yet, so we need to jump through hoops
*/
gtk_window_get_default_size (GTK_WINDOW (backlight->priv->popup), &orig_w, &orig_h);
gtk_widget_get_preferred_size (backlight->priv->popup, NULL, &win_req);
if (win_req.width > orig_w) {
orig_w = win_req.width;
}
if (win_req.height > orig_h) {
orig_h = win_req.height;
}
pointer_screen = NULL;
display = gtk_widget_get_display (backlight->priv->popup);
seat = gdk_display_get_default_seat (display);
device = gdk_seat_get_pointer (seat);
gdk_device_get_position (device,
&pointer_screen,
&pointer_x,
&pointer_y);
monitor = gdk_display_get_monitor_at_point (gdk_screen_get_display (pointer_screen),
pointer_x,
pointer_y);
gdk_monitor_get_geometry (monitor, &geometry);
screen_w = geometry.width;
screen_h = geometry.height;
x = ((screen_w - orig_w) / 2) + geometry.x;
y = geometry.y + (screen_h / 2) + (screen_h / 2 - orig_h) / 2;
gtk_window_move (GTK_WINDOW (backlight->priv->popup), x, y);
gtk_widget_show (backlight->priv->popup);
gdk_display_sync (gtk_widget_get_display (backlight->priv->popup));
}
/**
* gpm_common_sum_scale:
*
* Finds the average between value1 and value2 set on a scale factor
**/
inline static gfloat
gpm_common_sum_scale (gfloat value1, gfloat value2, gfloat factor)
{
gfloat diff;
diff = value1 - value2;
return value2 + (diff * factor);
}
/**
* gpm_backlight_brightness_evaluate_and_set:
**/
static gboolean
gpm_backlight_brightness_evaluate_and_set (GpmBacklight *backlight, gboolean interactive, gboolean use_initial)
{
gfloat brightness;
gfloat scale;
gboolean ret;
gboolean on_battery;
gboolean do_laptop_lcd;
gboolean enable_action;
gboolean battery_reduce;
gboolean hw_changed;
guint value;
guint old_value;
if (backlight->priv->can_dim == FALSE) {
egg_warning ("no dimming hardware");
return FALSE;
}
do_laptop_lcd = g_settings_get_boolean (backlight->priv->settings, GPM_SETTINGS_BACKLIGHT_ENABLE);
if (do_laptop_lcd == FALSE) {
egg_warning ("policy is no dimming");
return FALSE;
}
/* get the last set brightness */
brightness = backlight->priv->master_percentage / 100.0f;
egg_debug ("1. main brightness %f", brightness);
/* get battery status */
g_object_get (backlight->priv->client,
"on-battery", &on_battery,
NULL);
/* reduce if on battery power if we should */
if (use_initial) {
egg_debug ("Setting initial brightness level");
battery_reduce = g_settings_get_boolean (backlight->priv->settings, GPM_SETTINGS_BACKLIGHT_BATTERY_REDUCE);
if (on_battery && battery_reduce) {
value = g_settings_get_int (backlight->priv->settings, GPM_SETTINGS_BRIGHTNESS_DIM_BATT);
if (value > 100) {
egg_warning ("cannot use battery brightness value %i, correcting to 50", value);
value = 50;
}
scale = (100 - value) / 100.0f;
brightness *= scale;
} else {
scale = 1.0f;
}
egg_debug ("2. battery scale %f, brightness %f", scale, brightness);
}
/* reduce if system is momentarily idle */
if (!on_battery)
enable_action = g_settings_get_boolean (backlight->priv->settings, GPM_SETTINGS_IDLE_DIM_AC);
else
enable_action = g_settings_get_boolean (backlight->priv->settings, GPM_SETTINGS_IDLE_DIM_BATT);
if (enable_action && backlight->priv->system_is_idle) {
value = g_settings_get_int (backlight->priv->settings, GPM_SETTINGS_IDLE_BRIGHTNESS);
if (value > 100) {
egg_warning ("cannot use idle brightness value %i, correcting to 50", value);
value = 50;
}
scale = value / 100.0f;
brightness *= scale;
} else {
scale = 1.0f;
}
egg_debug ("3. idle scale %f, brightness %f", scale, brightness);
/* convert to percentage */
value = (guint) ((brightness * 100.0f) + 0.5);
/* only do stuff if the brightness is different */
gpm_brightness_get (backlight->priv->brightness, &old_value);
if (old_value == value) {
egg_debug ("values are the same, no action");
return FALSE;
}
/* only show dialog if interactive */
if (interactive) {
gpm_backlight_dialog_init (backlight);
msd_media_keys_window_set_volume_level (MSD_MEDIA_KEYS_WINDOW (backlight->priv->popup),
round (brightness));
gpm_backlight_dialog_show (backlight);
}
ret = gpm_brightness_set (backlight->priv->brightness, value, &hw_changed);
/* we emit a signal for the brightness applet */
if (ret && hw_changed) {
egg_debug ("emitting brightness-changed : %i", value);
g_signal_emit (backlight, signals [BRIGHTNESS_CHANGED], 0, value);
}
return TRUE;
}
/**
* gpm_settings_key_changed_cb:
*
* We might have to do things when the keys change; do them here.
**/
static void
gpm_settings_key_changed_cb (GSettings *settings, const gchar *key, GpmBacklight *backlight)
{
gboolean on_battery;
/* get battery status */
g_object_get (backlight->priv->client,
"on-battery", &on_battery,
NULL);
if (g_strcmp0 (key, GPM_SETTINGS_BRIGHTNESS_AC) == 0) {
backlight->priv->master_percentage = g_settings_get_double (settings, key);
gpm_backlight_brightness_evaluate_and_set (backlight, FALSE, TRUE);
} else if (on_battery && g_strcmp0 (key, GPM_SETTINGS_BRIGHTNESS_DIM_BATT) == 0) {
gpm_backlight_brightness_evaluate_and_set (backlight, FALSE, TRUE);
} else if (g_strcmp0 (key, GPM_SETTINGS_IDLE_DIM_AC) == 0 ||
g_strcmp0 (key, GPM_SETTINGS_BACKLIGHT_ENABLE) == 0 ||
g_strcmp0 (key, GPM_SETTINGS_SLEEP_DISPLAY_BATT) == 0 ||
g_strcmp0 (key, GPM_SETTINGS_BACKLIGHT_BATTERY_REDUCE) == 0 ||
g_strcmp0 (key, GPM_SETTINGS_IDLE_BRIGHTNESS) == 0) {
gpm_backlight_brightness_evaluate_and_set (backlight, FALSE, TRUE);
} else if (g_strcmp0 (key, GPM_SETTINGS_IDLE_DIM_TIME) == 0) {
backlight->priv->idle_dim_timeout = g_settings_get_int (settings, key);
gpm_idle_set_timeout_dim (backlight->priv->idle, backlight->priv->idle_dim_timeout);
} else {
egg_debug ("unknown key %s", key);
}
}
/**
* gpm_backlight_client_changed_cb:
* @client: The up_client class instance
* @backlight: This class instance
*
* Does the actions when the ac power source is inserted/removed.
**/
static void
gpm_backlight_client_changed_cb (UpClient *client, GParamSpec *pspec, GpmBacklight *backlight)
{
gpm_backlight_brightness_evaluate_and_set (backlight, FALSE, TRUE);
}
/**
* gpm_backlight_button_pressed_cb:
* @power: The power class instance
* @type: The button type, e.g. "power"
* @state: The state, where TRUE is depressed or closed
* @brightness: This class instance
**/
static void
gpm_backlight_button_pressed_cb (GpmButton *button, const gchar *type, GpmBacklight *backlight)
{
gboolean ret;
GError *error = NULL;
guint percentage;
gboolean hw_changed;
gboolean on_battery;
egg_debug ("Button press event type=%s", type);
if (g_strcmp0 (type, GPM_BUTTON_BRIGHT_UP) == 0) {
/* go up one step */
ret = gpm_brightness_up (backlight->priv->brightness, &hw_changed);
/* show the new value */
if (ret) {
gpm_brightness_get (backlight->priv->brightness, &percentage);
gpm_backlight_dialog_init (backlight);
msd_media_keys_window_set_volume_level (MSD_MEDIA_KEYS_WINDOW (backlight->priv->popup),
percentage);
gpm_backlight_dialog_show (backlight);
/* save the new percentage */
backlight->priv->master_percentage = percentage;
/* if using AC power supply, save the new brightness settings */
g_object_get (backlight->priv->client, "on-battery", &on_battery, NULL);
if (!on_battery) {
egg_debug ("saving brightness for ac supply: %i", percentage);
g_settings_set_double (backlight->priv->settings, GPM_SETTINGS_BRIGHTNESS_AC,
percentage*1.0);
}
}
/* we emit a signal for the brightness applet */
if (ret && hw_changed) {
egg_debug ("emitting brightness-changed : %i", percentage);
g_signal_emit (backlight, signals [BRIGHTNESS_CHANGED], 0, percentage);
}
} else if (g_strcmp0 (type, GPM_BUTTON_BRIGHT_DOWN) == 0) {
/* go up down step */
ret = gpm_brightness_down (backlight->priv->brightness, &hw_changed);
/* show the new value */
if (ret) {
gpm_brightness_get (backlight->priv->brightness, &percentage);
gpm_backlight_dialog_init (backlight);
msd_media_keys_window_set_volume_level (MSD_MEDIA_KEYS_WINDOW (backlight->priv->popup),
percentage);
gpm_backlight_dialog_show (backlight);
/* save the new percentage */
backlight->priv->master_percentage = percentage;
/* if using AC power supply, save the new brightness settings */
g_object_get (backlight->priv->client, "on-battery", &on_battery, NULL);
if (!on_battery) {
egg_debug ("saving brightness for ac supply: %i", percentage);
g_settings_set_double (backlight->priv->settings, GPM_SETTINGS_BRIGHTNESS_AC,
percentage*1.0);
}
}
/* we emit a signal for the brightness applet */
if (ret && hw_changed) {
egg_debug ("emitting brightness-changed : %i", percentage);
g_signal_emit (backlight, signals [BRIGHTNESS_CHANGED], 0, percentage);
}
} else if (g_strcmp0 (type, GPM_BUTTON_LID_OPEN) == 0) {
/* make sure we undim when we lift the lid */
gpm_backlight_brightness_evaluate_and_set (backlight, FALSE, TRUE);
/* ensure backlight is on */
ret = gpm_dpms_set_mode (backlight->priv->dpms, GPM_DPMS_MODE_ON, &error);
if (!ret) {
egg_warning ("failed to turn on DPMS: %s", error->message);
g_error_free (error);
}
}
}
/**
* gpm_backlight_notify_system_idle_changed:
**/
static gboolean
gpm_backlight_notify_system_idle_changed (GpmBacklight *backlight, gboolean is_idle)
{
gdouble elapsed;
/* no point continuing */
if (backlight->priv->system_is_idle == is_idle) {
egg_debug ("state not changed");
return FALSE;
}
/* get elapsed time and reset timer */
elapsed = g_timer_elapsed (backlight->priv->idle_timer, NULL);
g_timer_reset (backlight->priv->idle_timer);
if (is_idle == FALSE) {
egg_debug ("we have just been idle for %lfs", elapsed);
/* The user immediatly undimmed the screen!
* We should double the timeout to avoid this happening again */
if (elapsed < 10) {
/* double the event time */
backlight->priv->idle_dim_timeout *= 2.0;
egg_debug ("increasing idle dim time to %is", backlight->priv->idle_dim_timeout);
gpm_idle_set_timeout_dim (backlight->priv->idle, backlight->priv->idle_dim_timeout);
}
/* We reset the dimming after 2 minutes of idle,
* as the user will have changed tasks */
if (elapsed > 2*60) {
/* reset back to our default dimming */
backlight->priv->idle_dim_timeout =
g_settings_get_int (backlight->priv->settings,
GPM_SETTINGS_IDLE_DIM_TIME);
egg_debug ("resetting idle dim time to %is", backlight->priv->idle_dim_timeout);
gpm_idle_set_timeout_dim (backlight->priv->idle, backlight->priv->idle_dim_timeout);
}
} else {
egg_debug ("we were active for %lfs", elapsed);
}
egg_debug ("changing powersave idle status to %i", is_idle);
backlight->priv->system_is_idle = is_idle;
return TRUE;
}
/**
* idle_changed_cb:
* @idle: The idle class instance
* @mode: The idle mode, e.g. GPM_IDLE_MODE_BLANK
* @manager: This class instance
*
* This callback is called when mate-screensaver detects that the idle state
* has changed. GPM_IDLE_MODE_BLANK is when the session has become inactive,
* and GPM_IDLE_MODE_SLEEP is where the session has become inactive, AND the
* session timeout has elapsed for the idle action.
**/
static void
idle_changed_cb (GpmIdle *idle, GpmIdleMode mode, GpmBacklight *backlight)
{
gboolean ret;
GError *error = NULL;
gboolean on_battery;
GpmDpmsMode dpms_mode;
/* don't dim or undim the screen when the lid is closed */
if (gpm_button_is_lid_closed (backlight->priv->button))
return;
/* don't dim or undim the screen unless ConsoleKit/systemd say we are on the active console */
if (!LOGIND_RUNNING() && !egg_console_kit_is_active (backlight->priv->console)) {
egg_debug ("ignoring as not on active console");
return;
}
if (mode == GPM_IDLE_MODE_NORMAL) {
/* sync lcd brightness */
gpm_backlight_notify_system_idle_changed (backlight, FALSE);
gpm_backlight_brightness_evaluate_and_set (backlight, FALSE, TRUE);
/* ensure backlight is on */
ret = gpm_dpms_set_mode (backlight->priv->dpms, GPM_DPMS_MODE_ON, &error);
if (!ret) {
egg_warning ("failed to turn on DPMS: %s", error->message);
g_error_free (error);
}
} else if (mode == GPM_IDLE_MODE_DIM) {
/* sync lcd brightness */
gpm_backlight_notify_system_idle_changed (backlight, TRUE);
gpm_backlight_brightness_evaluate_and_set (backlight, FALSE, TRUE);
/* ensure backlight is on */
ret = gpm_dpms_set_mode (backlight->priv->dpms, GPM_DPMS_MODE_ON, &error);
if (!ret) {
egg_warning ("failed to turn on DPMS: %s", error->message);
g_error_free (error);
}
} else if (mode == GPM_IDLE_MODE_BLANK) {
/* sync lcd brightness */
gpm_backlight_notify_system_idle_changed (backlight, TRUE);
gpm_backlight_brightness_evaluate_and_set (backlight, FALSE, TRUE);
/* get the DPMS state we're supposed to use on the power state */
g_object_get (backlight->priv->client,
"on-battery", &on_battery,
NULL);
if (!on_battery)
dpms_mode = g_settings_get_enum (backlight->priv->settings, GPM_SETTINGS_DPMS_METHOD_AC);
else
dpms_mode = g_settings_get_enum (backlight->priv->settings, GPM_SETTINGS_DPMS_METHOD_BATT);
/* check if method is valid */
if (dpms_mode == GPM_DPMS_MODE_UNKNOWN || dpms_mode == GPM_DPMS_MODE_ON) {
egg_warning ("BACKLIGHT method %i unknown. Using OFF.", dpms_mode);
dpms_mode = GPM_DPMS_MODE_OFF;
}
/* turn backlight off */
ret = gpm_dpms_set_mode (backlight->priv->dpms, dpms_mode, &error);
if (!ret) {
egg_warning ("failed to change DPMS: %s", error->message);
g_error_free (error);
}
}
}
/**
* brightness_changed_cb:
* @brightness: The GpmBrightness class instance
* @percentage: The new percentage brightness
* @brightness: This class instance
*
* This callback is called when the brightness value changes.
**/
static void
brightness_changed_cb (GpmBrightness *brightness, guint percentage, GpmBacklight *backlight)
{
/* save the new percentage */
backlight->priv->master_percentage = percentage;
/* we emit a signal for the brightness applet */
egg_debug ("emitting brightness-changed : %i", percentage);
g_signal_emit (backlight, signals [BRIGHTNESS_CHANGED], 0, percentage);
}
/**
* control_resume_cb:
* @control: The control class instance
* @power: This power class instance
*
* We have to update the caches on resume
**/
static void
control_resume_cb (GpmControl *control, GpmControlAction action, GpmBacklight *backlight)
{
gboolean ret;
GError *error = NULL;
/* ensure backlight is on */
ret = gpm_dpms_set_mode (backlight->priv->dpms, GPM_DPMS_MODE_ON, &error);
if (!ret) {
egg_warning ("failed to turn on DPMS: %s", error->message);
g_error_free (error);
}
}
/**
* gpm_backlight_finalize:
**/
static void
gpm_backlight_finalize (GObject *object)
{
GpmBacklight *backlight;
g_return_if_fail (object != NULL);
g_return_if_fail (GPM_IS_BACKLIGHT (object));
backlight = GPM_BACKLIGHT (object);
g_timer_destroy (backlight->priv->idle_timer);
gtk_widget_destroy (backlight->priv->popup);
g_object_unref (backlight->priv->dpms);
g_object_unref (backlight->priv->control);
g_object_unref (backlight->priv->settings);
g_object_unref (backlight->priv->client);
g_object_unref (backlight->priv->button);
g_object_unref (backlight->priv->idle);
g_object_unref (backlight->priv->brightness);
g_object_unref (backlight->priv->console);
g_return_if_fail (backlight->priv != NULL);
G_OBJECT_CLASS (gpm_backlight_parent_class)->finalize (object);
}
/**
* gpm_backlight_class_init:
**/
static void
gpm_backlight_class_init (GpmBacklightClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gpm_backlight_finalize;
signals [BRIGHTNESS_CHANGED] =
g_signal_new ("brightness-changed",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GpmBacklightClass, brightness_changed),
NULL, NULL,
g_cclosure_marshal_VOID__UINT,
G_TYPE_NONE, 1, G_TYPE_UINT);
}
/**
* gpm_backlight_init:
* @brightness: This brightness class instance
*
* initialises the brightness class. NOTE: We expect laptop_panel objects
* to *NOT* be removed or added during the session.
* We only control the first laptop_panel object if there are more than one.
**/
static void
gpm_backlight_init (GpmBacklight *backlight)
{
backlight->priv = gpm_backlight_get_instance_private (backlight);
/* record our idle time */
backlight->priv->idle_timer = g_timer_new ();
/* watch for manual brightness changes (for the popup widget) */
backlight->priv->brightness = gpm_brightness_new ();
g_signal_connect (backlight->priv->brightness, "brightness-changed",
G_CALLBACK (brightness_changed_cb), backlight);
/* we use up_client for the ac-adapter-changed signal */
backlight->priv->client = up_client_new ();
g_signal_connect (backlight->priv->client, "notify",
G_CALLBACK (gpm_backlight_client_changed_cb), backlight);
/* gets caps */
backlight->priv->can_dim = gpm_brightness_has_hw (backlight->priv->brightness);
/* watch for dim value changes */
backlight->priv->settings = g_settings_new (GPM_SETTINGS_SCHEMA);
g_signal_connect (backlight->priv->settings, "changed", G_CALLBACK (gpm_settings_key_changed_cb), backlight);
/* set the main brightness, this is designed to be updated if the user changes the
* brightness so we can undim to the 'correct' value */
backlight->priv->master_percentage = g_settings_get_double (backlight->priv->settings, GPM_SETTINGS_BRIGHTNESS_AC);
/* watch for brightness up and down buttons and also check lid state */
backlight->priv->button = gpm_button_new ();
g_signal_connect (backlight->priv->button, "button-pressed",
G_CALLBACK (gpm_backlight_button_pressed_cb), backlight);
/* watch for idle mode changes */
backlight->priv->idle = gpm_idle_new ();
g_signal_connect (backlight->priv->idle, "idle-changed",
G_CALLBACK (idle_changed_cb), backlight);
/* assumption */
backlight->priv->system_is_idle = FALSE;
backlight->priv->idle_dim_timeout = g_settings_get_int (backlight->priv->settings, GPM_SETTINGS_IDLE_DIM_TIME);
gpm_idle_set_timeout_dim (backlight->priv->idle, backlight->priv->idle_dim_timeout);
/* use a visual widget */
backlight->priv->popup = msd_media_keys_window_new ();
msd_media_keys_window_set_action_custom (MSD_MEDIA_KEYS_WINDOW (backlight->priv->popup),
"gpm-brightness-lcd",
TRUE);
gtk_window_set_position (GTK_WINDOW (backlight->priv->popup), GTK_WIN_POS_NONE);
/* DPMS mode poll class */
backlight->priv->dpms = gpm_dpms_new ();
/* we refresh DPMS on resume */
backlight->priv->control = gpm_control_new ();
g_signal_connect (backlight->priv->control, "resume",
G_CALLBACK (control_resume_cb), backlight);
/* Don't do dimming on inactive console */
backlight->priv->console = egg_console_kit_new ();
/* sync at startup */
gpm_backlight_brightness_evaluate_and_set (backlight, FALSE, TRUE);
}
/**
* gpm_backlight_new:
* Return value: A new brightness class instance.
**/
GpmBacklight *
gpm_backlight_new (void)
{
GpmBacklight *backlight = g_object_new (GPM_TYPE_BACKLIGHT, NULL);
return backlight;
}
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