| // 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/WebLockOrientationError.h" |
| #include "third_party/WebKit/public/platform/WebScreenInfo.h" |
| |
| namespace content { |
| |
| ScreenOrientationDelegate* ScreenOrientationProvider::delegate_ = NULL; |
| |
| 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(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(); |
| |
| 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 |