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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/device_orientation_dispatcher.h"
#include "content/common/device_orientation_messages.h"
#include "content/renderer/render_view_impl.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebDeviceOrientation.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebDeviceOrientationController.h"
namespace content {
DeviceOrientationDispatcher::DeviceOrientationDispatcher(
RenderViewImpl* render_view)
: RenderViewObserver(render_view),
controller_(NULL),
started_(false) {
}
DeviceOrientationDispatcher::~DeviceOrientationDispatcher() {
if (started_)
stopUpdating();
}
bool DeviceOrientationDispatcher::OnMessageReceived(const IPC::Message& msg) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(DeviceOrientationDispatcher, msg)
IPC_MESSAGE_HANDLER(DeviceOrientationMsg_Updated,
OnDeviceOrientationUpdated)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void DeviceOrientationDispatcher::setController(
WebKit::WebDeviceOrientationController* controller) {
controller_.reset(controller);
}
void DeviceOrientationDispatcher::startUpdating() {
Send(new DeviceOrientationHostMsg_StartUpdating(routing_id()));
started_ = true;
}
void DeviceOrientationDispatcher::stopUpdating() {
Send(new DeviceOrientationHostMsg_StopUpdating(routing_id()));
started_ = false;
}
WebKit::WebDeviceOrientation DeviceOrientationDispatcher::lastOrientation()
const {
return last_orientation_;
}
namespace {
bool OrientationsEqual(const DeviceOrientationMsg_Updated_Params& a,
WebKit::WebDeviceOrientation* b) {
if (a.can_provide_alpha != b->canProvideAlpha())
return false;
if (a.can_provide_alpha && a.alpha != b->alpha())
return false;
if (a.can_provide_beta != b->canProvideBeta())
return false;
if (a.can_provide_beta && a.beta != b->beta())
return false;
if (a.can_provide_gamma != b->canProvideGamma())
return false;
if (a.can_provide_gamma && a.gamma != b->gamma())
return false;
if (a.can_provide_absolute != b->canProvideAbsolute())
return false;
if (a.can_provide_absolute && a.absolute != b->absolute())
return false;
return true;
}
} // namespace
void DeviceOrientationDispatcher::OnDeviceOrientationUpdated(
const DeviceOrientationMsg_Updated_Params& p) {
if (!last_orientation_.isNull() && OrientationsEqual(p, &last_orientation_))
return;
last_orientation_.setNull(false);
if (p.can_provide_alpha)
last_orientation_.setAlpha(p.alpha);
if (p.can_provide_beta)
last_orientation_.setBeta(p.beta);
if (p.can_provide_gamma)
last_orientation_.setGamma(p.gamma);
if (p.can_provide_absolute)
last_orientation_.setAbsolute(p.absolute);
controller_->didChangeDeviceOrientation(last_orientation_);
}
} // namespace content
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