| /* |
| * Copyright (C) 2012 Apple Inc. All rights reserved. |
| * |
| * 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 Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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. |
| */ |
| |
| #include "third_party/blink/renderer/core/svg/graphics/svg_image_chrome_client.h" |
| |
| #include <algorithm> |
| #include <utility> |
| |
| #include "third_party/blink/renderer/core/svg/graphics/svg_image.h" |
| #include "third_party/blink/renderer/platform/graphics/image_observer.h" |
| #include "third_party/blink/renderer/platform/scheduler/public/thread_scheduler.h" |
| #include "third_party/blink/renderer/platform/wtf/time.h" |
| |
| namespace blink { |
| |
| static constexpr TimeDelta kAnimationFrameDelay = |
| TimeDelta::FromSecondsD(1.0 / 60); |
| |
| SVGImageChromeClient::SVGImageChromeClient(SVGImage* image) |
| : image_(image), |
| animation_timer_(std::make_unique<TaskRunnerTimer<SVGImageChromeClient>>( |
| blink::Platform::Current() |
| ->CurrentThread() |
| ->Scheduler() |
| ->CompositorTaskRunner(), |
| this, |
| &SVGImageChromeClient::AnimationTimerFired)), |
| timeline_state_(kRunning) {} |
| |
| SVGImageChromeClient* SVGImageChromeClient::Create(SVGImage* image) { |
| return new SVGImageChromeClient(image); |
| } |
| |
| bool SVGImageChromeClient::IsSVGImageChromeClient() const { |
| return true; |
| } |
| |
| void SVGImageChromeClient::ChromeDestroyed() { |
| image_ = nullptr; |
| } |
| |
| void SVGImageChromeClient::InvalidateRect(const IntRect& r) { |
| // If m_image->m_page is null, we're being destructed, don't fire |
| // changedInRect() in that case. |
| if (image_ && image_->GetImageObserver() && image_->page_) |
| image_->GetImageObserver()->ChangedInRect(image_, r); |
| } |
| |
| void SVGImageChromeClient::SuspendAnimation() { |
| if (image_->MaybeAnimated()) { |
| timeline_state_ = kSuspendedWithAnimationPending; |
| } else { |
| // Preserve SuspendedWithAnimationPending if set. |
| timeline_state_ = std::max(timeline_state_, kSuspended); |
| } |
| } |
| |
| void SVGImageChromeClient::ResumeAnimation() { |
| bool have_pending_animation = |
| timeline_state_ == kSuspendedWithAnimationPending; |
| timeline_state_ = kRunning; |
| |
| // If an animation frame was pending/requested while animations were |
| // suspended, schedule a new animation frame. |
| if (!have_pending_animation) |
| return; |
| ScheduleAnimation(nullptr); |
| } |
| |
| void SVGImageChromeClient::RestoreAnimationIfNeeded() { |
| // If the timeline is not suspended we needn't attempt to restore. |
| if (!IsSuspended()) |
| return; |
| image_->RestoreAnimation(); |
| } |
| |
| void SVGImageChromeClient::ScheduleAnimation(const LocalFrameView*) { |
| // Because a single SVGImage can be shared by multiple pages, we can't key |
| // our svg image layout on the page's real animation frame. Therefore, we |
| // run this fake animation timer to trigger layout in SVGImages. The name, |
| // "animationTimer", is to match the new requestAnimationFrame-based layout |
| // approach. |
| if (animation_timer_->IsActive()) |
| return; |
| // Schedule the 'animation' ASAP if the image does not contain any |
| // animations, but prefer a fixed, jittery, frame-delay if there're any |
| // animations. Checking for pending/active animations could be more |
| // stringent. |
| TimeDelta fire_time; |
| if (image_->MaybeAnimated()) { |
| if (IsSuspended()) |
| return; |
| fire_time = kAnimationFrameDelay; |
| } |
| animation_timer_->StartOneShot(fire_time, FROM_HERE); |
| } |
| |
| void SVGImageChromeClient::SetTimer(std::unique_ptr<TimerBase> timer) { |
| animation_timer_ = std::move(timer); |
| } |
| |
| void SVGImageChromeClient::AnimationTimerFired(TimerBase*) { |
| if (!image_) |
| return; |
| |
| // The SVGImageChromeClient object's lifetime is dependent on |
| // the ImageObserver (an ImageResourceContent) of its image. Should it |
| // be dead and about to be lazily swept out, then GetImageObserver() |
| // becomes null and we do not proceed. |
| // |
| // TODO(Oilpan): move (SVG)Image to the Oilpan heap, and avoid |
| // this explicit lifetime check. |
| if (!image_->GetImageObserver()) |
| return; |
| |
| image_->ServiceAnimations(CurrentTimeTicks()); |
| } |
| |
| } // namespace blink |