329 lines
9.3 KiB
C
329 lines
9.3 KiB
C
/*
|
|
* Copyright (C) 2016 Jolla Ltd.
|
|
* Contact: Slava Monich <slava.monich@jolla.com>
|
|
*
|
|
* You may use this file under the terms of BSD license as follows:
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of Jolla Ltd nor the names of its contributors may
|
|
* be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
|
* THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* The views and conclusions contained in the software and documentation
|
|
* are those of the authors and should not be interpreted as representing
|
|
* any official policies, either expressed or implied.
|
|
*/
|
|
|
|
#include "mce_display.h"
|
|
#include "mce_proxy.h"
|
|
#include "mce_log_p.h"
|
|
|
|
#include <gutil_misc.h>
|
|
|
|
/* Generated headers */
|
|
#include "com.canonical.Unity.Screen.h"
|
|
|
|
struct mce_display_priv {
|
|
MceProxy* proxy;
|
|
gulong proxy_valid_id;
|
|
gulong display_status_ind_id;
|
|
};
|
|
|
|
enum mce_display_signal {
|
|
SIGNAL_VALID_CHANGED,
|
|
SIGNAL_STATE_CHANGED,
|
|
SIGNAL_COUNT
|
|
};
|
|
|
|
#define SIGNAL_VALID_CHANGED_NAME "mce-display-valid-changed"
|
|
#define SIGNAL_STATE_CHANGED_NAME "mce-display-state-changed"
|
|
|
|
#define MCE_DISPLAY_OFF_STRING "off"
|
|
#define MCE_DISPLAY_DIM_STRING "dim"
|
|
#define MCE_DISPLAY_ON_STRING "on"
|
|
|
|
#define MCE_DISPLAY_SIG "displayStatusInd"
|
|
|
|
static guint mce_display_signals[SIGNAL_COUNT] = { 0 };
|
|
|
|
typedef GObjectClass MceDisplayClass;
|
|
G_DEFINE_TYPE(MceDisplay, mce_display, G_TYPE_OBJECT)
|
|
#define PARENT_CLASS mce_display_parent_class
|
|
#define MCE_DISPLAY_TYPE (mce_display_get_type())
|
|
#define MCE_DISPLAY(obj) (G_TYPE_CHECK_INSTANCE_CAST(obj,\
|
|
MCE_DISPLAY_TYPE,MceDisplay))
|
|
|
|
/*==========================================================================*
|
|
* Implementation
|
|
*==========================================================================*/
|
|
|
|
static
|
|
void
|
|
mce_display_status_update(
|
|
MceDisplay* self,
|
|
const char* status)
|
|
{
|
|
MCE_DISPLAY_STATE state;
|
|
MceDisplayPriv* priv = self->priv;
|
|
|
|
if (!g_strcmp0(status, MCE_DISPLAY_OFF_STRING)) {
|
|
state = MCE_DISPLAY_STATE_OFF;
|
|
} else if (!g_strcmp0(status, MCE_DISPLAY_DIM_STRING)) {
|
|
state = MCE_DISPLAY_STATE_DIM;
|
|
} else {
|
|
GASSERT(!g_strcmp0(status, MCE_DISPLAY_ON_STRING));
|
|
state = MCE_DISPLAY_STATE_ON;
|
|
}
|
|
if (self->state != state) {
|
|
self->state = state;
|
|
g_signal_emit(self, mce_display_signals[SIGNAL_STATE_CHANGED], 0);
|
|
}
|
|
if (priv->proxy->valid && !self->valid) {
|
|
self->valid = TRUE;
|
|
g_signal_emit(self, mce_display_signals[SIGNAL_VALID_CHANGED], 0);
|
|
}
|
|
}
|
|
|
|
static
|
|
void
|
|
mce_display_status_query_done(
|
|
GObject* proxy,
|
|
GAsyncResult* result,
|
|
gpointer arg)
|
|
{
|
|
GError* error = NULL;
|
|
char* status = NULL;
|
|
MceDisplay* self = MCE_DISPLAY(arg);
|
|
|
|
if (com_canonical_unity_screen_call_get_display_status_finish(
|
|
COM_CANONICAL_UNITY_SCREEN(proxy), &status, result, &error)) {
|
|
GDEBUG("Display is currently %s", status);
|
|
mce_display_status_update(self, status);
|
|
g_free(status);
|
|
} else {
|
|
/*
|
|
* We could retry but it's probably not worth the trouble
|
|
* because the next time display state changes we receive
|
|
* display_status_ind signal and sync our state with mce.
|
|
* Until then, this object stays invalid.
|
|
*/
|
|
GWARN("Failed to query display state %s", GERRMSG(error));
|
|
g_error_free(error);
|
|
}
|
|
mce_display_unref(self);
|
|
}
|
|
|
|
static
|
|
void
|
|
mce_display_status_ind(
|
|
ComCanonicalUnityScreen* proxy,
|
|
const char* status,
|
|
gpointer arg)
|
|
{
|
|
GDEBUG("Display is %s", status);
|
|
mce_display_status_update(MCE_DISPLAY(arg), status);
|
|
}
|
|
|
|
static
|
|
void
|
|
mce_display_status_query(
|
|
MceDisplay* self)
|
|
{
|
|
MceDisplayPriv* priv = self->priv;
|
|
MceProxy* proxy = priv->proxy;
|
|
|
|
/*
|
|
* proxy->signal and proxy->request may not be available at the
|
|
* time when MceDisplay is created. In that case we have to wait
|
|
* for the valid signal before we can connect the display state
|
|
* signal and submit the initial query.
|
|
*/
|
|
if (proxy->signal && !priv->display_status_ind_id) {
|
|
priv->display_status_ind_id = g_signal_connect(proxy->signal,
|
|
MCE_DISPLAY_SIG, G_CALLBACK(mce_display_status_ind), self);
|
|
}
|
|
if (proxy->request && proxy->valid) {
|
|
com_canonical_unity_screen_call_get_display_status(proxy->request, NULL,
|
|
mce_display_status_query_done, mce_display_ref(self));
|
|
}
|
|
}
|
|
|
|
static
|
|
void
|
|
mce_display_valid_changed(
|
|
MceProxy* proxy,
|
|
void* arg)
|
|
{
|
|
MceDisplay* self = MCE_DISPLAY(arg);
|
|
|
|
if (proxy->valid) {
|
|
mce_display_status_query(self);
|
|
} else {
|
|
if (self->valid) {
|
|
self->valid = FALSE;
|
|
g_signal_emit(self, mce_display_signals[SIGNAL_VALID_CHANGED], 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*==========================================================================*
|
|
* API
|
|
*==========================================================================*/
|
|
|
|
MceDisplay*
|
|
mce_display_new()
|
|
{
|
|
/* MCE assumes one display */
|
|
static MceDisplay* mce_display_instance = NULL;
|
|
|
|
if (mce_display_instance) {
|
|
mce_display_ref(mce_display_instance);
|
|
} else {
|
|
mce_display_instance = g_object_new(MCE_DISPLAY_TYPE, NULL);
|
|
mce_display_status_query(mce_display_instance);
|
|
g_object_add_weak_pointer(G_OBJECT(mce_display_instance),
|
|
(gpointer*)(&mce_display_instance));
|
|
}
|
|
return mce_display_instance;
|
|
}
|
|
|
|
MceDisplay*
|
|
mce_display_ref(
|
|
MceDisplay* self)
|
|
{
|
|
if (G_LIKELY(self)) {
|
|
g_object_ref(MCE_DISPLAY(self));
|
|
}
|
|
return self;
|
|
}
|
|
|
|
void
|
|
mce_display_unref(
|
|
MceDisplay* self)
|
|
{
|
|
if (G_LIKELY(self)) {
|
|
g_object_unref(MCE_DISPLAY(self));
|
|
}
|
|
}
|
|
|
|
gulong
|
|
mce_display_add_valid_changed_handler(
|
|
MceDisplay* self,
|
|
MceDisplayFunc fn,
|
|
void* arg)
|
|
{
|
|
return (G_LIKELY(self) && G_LIKELY(fn)) ? g_signal_connect(self,
|
|
SIGNAL_VALID_CHANGED_NAME, G_CALLBACK(fn), arg) : 0;
|
|
}
|
|
|
|
gulong
|
|
mce_display_add_state_changed_handler(
|
|
MceDisplay* self,
|
|
MceDisplayFunc fn,
|
|
void* arg)
|
|
{
|
|
return (G_LIKELY(self) && G_LIKELY(fn)) ? g_signal_connect(self,
|
|
SIGNAL_STATE_CHANGED_NAME, G_CALLBACK(fn), arg) : 0;
|
|
}
|
|
|
|
void
|
|
mce_display_remove_handler(
|
|
MceDisplay* self,
|
|
gulong id)
|
|
{
|
|
if (G_LIKELY(self) && G_LIKELY(id)) {
|
|
g_signal_handler_disconnect(self, id);
|
|
}
|
|
}
|
|
|
|
void
|
|
mce_display_remove_handlers(
|
|
MceDisplay* self,
|
|
gulong *ids,
|
|
guint count)
|
|
{
|
|
gutil_disconnect_handlers(self, ids, count);
|
|
}
|
|
|
|
/*==========================================================================*
|
|
* Internals
|
|
*==========================================================================*/
|
|
|
|
static
|
|
void
|
|
mce_display_init(
|
|
MceDisplay* self)
|
|
{
|
|
MceDisplayPriv* priv = G_TYPE_INSTANCE_GET_PRIVATE(self, MCE_DISPLAY_TYPE,
|
|
MceDisplayPriv);
|
|
|
|
self->priv = priv;
|
|
priv->proxy = mce_proxy_new();
|
|
priv->proxy_valid_id = mce_proxy_add_valid_changed_handler(priv->proxy,
|
|
mce_display_valid_changed, self);
|
|
}
|
|
|
|
static
|
|
void
|
|
mce_display_finalize(
|
|
GObject* object)
|
|
{
|
|
MceDisplay* self = MCE_DISPLAY(object);
|
|
MceDisplayPriv* priv = self->priv;
|
|
|
|
if (priv->display_status_ind_id) {
|
|
g_signal_handler_disconnect(priv->proxy->signal,
|
|
priv->display_status_ind_id);
|
|
}
|
|
mce_proxy_remove_handler(priv->proxy, priv->proxy_valid_id);
|
|
mce_proxy_unref(priv->proxy);
|
|
G_OBJECT_CLASS(PARENT_CLASS)->finalize(object);
|
|
}
|
|
|
|
static
|
|
void
|
|
mce_display_class_init(
|
|
MceDisplayClass* klass)
|
|
{
|
|
GObjectClass* object_class = G_OBJECT_CLASS(klass);
|
|
|
|
object_class->finalize = mce_display_finalize;
|
|
g_type_class_add_private(klass, sizeof(MceDisplayPriv));
|
|
mce_display_signals[SIGNAL_VALID_CHANGED] =
|
|
g_signal_new(SIGNAL_VALID_CHANGED_NAME,
|
|
G_OBJECT_CLASS_TYPE(klass), G_SIGNAL_RUN_FIRST,
|
|
0, NULL, NULL, NULL, G_TYPE_NONE, 0);
|
|
mce_display_signals[SIGNAL_STATE_CHANGED] =
|
|
g_signal_new(SIGNAL_STATE_CHANGED_NAME,
|
|
G_OBJECT_CLASS_TYPE(klass), G_SIGNAL_RUN_FIRST,
|
|
0, NULL, NULL, NULL, G_TYPE_NONE, 0);
|
|
}
|
|
|
|
/*
|
|
* Local Variables:
|
|
* mode: C
|
|
* c-basic-offset: 4
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*/
|