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// Copyright 2016 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 "cc/animation/scroll_offset_animations.h"
#include "cc/animation/animation_host.h"
namespace cc {
ScrollOffsetAnimationUpdate::ScrollOffsetAnimationUpdate() {}
ScrollOffsetAnimationUpdate::ScrollOffsetAnimationUpdate(ElementId element_id)
: element_id_(element_id), takeover_(false) {}
ScrollOffsetAnimations::ScrollOffsetAnimations(AnimationHost* animation_host)
: animation_host_(animation_host) {}
ScrollOffsetAnimations::~ScrollOffsetAnimations() {}
ScrollOffsetAnimationUpdate ScrollOffsetAnimations::GetUpdateForElementId(
ElementId element_id) const {
DCHECK(element_id);
auto iter = element_to_update_map_.find(element_id);
return iter == element_to_update_map_.end()
? ScrollOffsetAnimationUpdate(element_id)
: iter->second;
}
void ScrollOffsetAnimations::AddAdjustmentUpdate(ElementId element_id,
gfx::Vector2dF adjustment) {
DCHECK(element_id);
ScrollOffsetAnimationUpdate update = GetUpdateForElementId(element_id);
update.adjustment_ += adjustment;
element_to_update_map_[element_id] = update;
animation_host_->SetNeedsCommit();
animation_host_->SetNeedsPushProperties();
}
void ScrollOffsetAnimations::AddTakeoverUpdate(ElementId element_id) {
DCHECK(element_id);
ScrollOffsetAnimationUpdate update = GetUpdateForElementId(element_id);
update.takeover_ = true;
element_to_update_map_[element_id] = update;
animation_host_->SetNeedsCommit();
animation_host_->SetNeedsPushProperties();
}
bool ScrollOffsetAnimations::HasUpdatesForTesting() const {
return !element_to_update_map_.empty();
}
void ScrollOffsetAnimations::PushPropertiesTo(
ScrollOffsetAnimationsImpl* animations) {
DCHECK(animations);
if (element_to_update_map_.empty())
return;
for (auto& kv : element_to_update_map_) {
const auto& update = kv.second;
if (update.takeover_)
animations->ScrollAnimationAbort(true /*needs_completion*/);
else
animations->ScrollAnimationApplyAdjustment(update.element_id_,
update.adjustment_);
}
element_to_update_map_.clear();
}
} // namespace cc
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