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// Copyright 2014 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/public/browser/screen_orientation_provider.h"
#include "content/browser/renderer_host/render_view_host_delegate.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/screen_orientation_delegate.h"
#include "content/public/browser/screen_orientation_dispatcher_host.h"
#include "content/public/browser/web_contents.h"
#include "third_party/WebKit/public/platform/WebScreenInfo.h"
#include "third_party/WebKit/public/platform/modules/screen_orientation/WebLockOrientationError.h"
namespace content {
ScreenOrientationDelegate* ScreenOrientationProvider::delegate_ = nullptr;
ScreenOrientationProvider::LockInformation::LockInformation(int request_id,
blink::WebScreenOrientationLockType lock)
: request_id(request_id),
lock(lock) {
}
ScreenOrientationProvider::ScreenOrientationProvider(
ScreenOrientationDispatcherHost* dispatcher_host,
WebContents* web_contents)
: WebContentsObserver(web_contents),
dispatcher_(dispatcher_host),
lock_applied_(false) {
}
ScreenOrientationProvider::~ScreenOrientationProvider() {
}
void ScreenOrientationProvider::LockOrientation(int request_id,
blink::WebScreenOrientationLockType lock_orientation) {
if (!delegate_ || !delegate_->ScreenOrientationProviderSupported()) {
dispatcher_->NotifyLockError(request_id,
blink::WebLockOrientationErrorNotAvailable);
return;
}
if (delegate_->FullScreenRequired(web_contents())) {
RenderViewHost* rvh = web_contents()->GetRenderViewHost();
if (!rvh) {
dispatcher_->NotifyLockError(request_id,
blink::WebLockOrientationErrorCanceled);
return;
}
RenderViewHostDelegate* rvhd = rvh->GetDelegate();
if (!rvhd) {
dispatcher_->NotifyLockError(request_id,
blink::WebLockOrientationErrorCanceled);
return;
}
if (!rvhd->IsFullscreenForCurrentTab()) {
dispatcher_->NotifyLockError(request_id,
blink::WebLockOrientationErrorFullScreenRequired);
return;
}
}
if (lock_orientation == blink::WebScreenOrientationLockNatural) {
lock_orientation = GetNaturalLockType();
if (lock_orientation == blink::WebScreenOrientationLockDefault) {
// We are in a broken state, let's pretend we got canceled.
dispatcher_->NotifyLockError(request_id,
blink::WebLockOrientationErrorCanceled);
return;
}
}
lock_applied_ = true;
delegate_->Lock(web_contents(), lock_orientation);
// If two calls happen close to each other some platforms will ignore the
// first. A successful lock will be once orientation matches the latest
// request.
pending_lock_.reset();
// If the orientation we are locking to matches the current orientation, we
// should succeed immediately.
if (LockMatchesCurrentOrientation(lock_orientation)) {
dispatcher_->NotifyLockSuccess(request_id);
return;
}
pending_lock_.reset(new LockInformation(request_id, lock_orientation));
}
void ScreenOrientationProvider::UnlockOrientation() {
if (!lock_applied_ || !delegate_)
return;
delegate_->Unlock(web_contents());
lock_applied_ = false;
pending_lock_.reset();
}
void ScreenOrientationProvider::OnOrientationChange() {
if (!pending_lock_.get())
return;
if (LockMatchesCurrentOrientation(pending_lock_->lock)) {
dispatcher_->NotifyLockSuccess(pending_lock_->request_id);
pending_lock_.reset();
}
}
void ScreenOrientationProvider::SetDelegate(
ScreenOrientationDelegate* delegate) {
delegate_ = delegate;
}
void ScreenOrientationProvider::DidToggleFullscreenModeForTab(
bool entered_fullscreen) {
if (!lock_applied_ || !delegate_)
return;
// If fullscreen is not required in order to lock orientation, don't unlock
// when fullscreen state changes.
if (!delegate_->FullScreenRequired(web_contents()))
return;
DCHECK(!entered_fullscreen);
UnlockOrientation();
}
blink::WebScreenOrientationLockType
ScreenOrientationProvider::GetNaturalLockType() const {
RenderWidgetHost* rwh = web_contents()->GetRenderViewHost();
if (!rwh)
return blink::WebScreenOrientationLockDefault;
blink::WebScreenInfo screen_info;
rwh->GetWebScreenInfo(&screen_info);
switch (screen_info.orientationType) {
case blink::WebScreenOrientationPortraitPrimary:
case blink::WebScreenOrientationPortraitSecondary:
if (screen_info.orientationAngle == 0 ||
screen_info.orientationAngle == 180) {
return blink::WebScreenOrientationLockPortraitPrimary;
}
return blink::WebScreenOrientationLockLandscapePrimary;
case blink::WebScreenOrientationLandscapePrimary:
case blink::WebScreenOrientationLandscapeSecondary:
if (screen_info.orientationAngle == 0 ||
screen_info.orientationAngle == 180) {
return blink::WebScreenOrientationLockLandscapePrimary;
}
return blink::WebScreenOrientationLockPortraitPrimary;
case blink::WebScreenOrientationUndefined:
NOTREACHED();
return blink::WebScreenOrientationLockDefault;
}
NOTREACHED();
return blink::WebScreenOrientationLockDefault;
}
bool ScreenOrientationProvider::LockMatchesCurrentOrientation(
blink::WebScreenOrientationLockType lock) {
RenderWidgetHost* rwh = web_contents()->GetRenderViewHost();
if (!rwh)
return false;
blink::WebScreenInfo screen_info;
rwh->GetWebScreenInfo(&screen_info);
switch (lock) {
case blink::WebScreenOrientationLockPortraitPrimary:
return screen_info.orientationType ==
blink::WebScreenOrientationPortraitPrimary;
case blink::WebScreenOrientationLockPortraitSecondary:
return screen_info.orientationType ==
blink::WebScreenOrientationPortraitSecondary;
case blink::WebScreenOrientationLockLandscapePrimary:
return screen_info.orientationType ==
blink::WebScreenOrientationLandscapePrimary;
case blink::WebScreenOrientationLockLandscapeSecondary:
return screen_info.orientationType ==
blink::WebScreenOrientationLandscapeSecondary;
case blink::WebScreenOrientationLockLandscape:
return screen_info.orientationType ==
blink::WebScreenOrientationLandscapePrimary ||
screen_info.orientationType ==
blink::WebScreenOrientationLandscapeSecondary;
case blink::WebScreenOrientationLockPortrait:
return screen_info.orientationType ==
blink::WebScreenOrientationPortraitPrimary ||
screen_info.orientationType ==
blink::WebScreenOrientationPortraitSecondary;
case blink::WebScreenOrientationLockAny:
return true;
case blink::WebScreenOrientationLockNatural:
case blink::WebScreenOrientationLockDefault:
NOTREACHED();
return false;
}
NOTREACHED();
return false;
}
} // namespace content
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