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author | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2018-05-15 10:20:33 +0200 |
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committer | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2018-05-15 10:28:57 +0000 |
commit | d17ea114e5ef69ad5d5d7413280a13e6428098aa (patch) | |
tree | 2c01a75df69f30d27b1432467cfe7c1467a498da /chromium/third_party/blink/renderer/platform/scroll/scroll_animator_base.cc | |
parent | 8c5c43c7b138c9b4b0bf56d946e61d3bbc111bec (diff) | |
download | qtwebengine-chromium-d17ea114e5ef69ad5d5d7413280a13e6428098aa.tar.gz |
BASELINE: Update Chromium to 67.0.3396.47
Change-Id: Idcb1341782e417561a2473eeecc82642dafda5b7
Reviewed-by: Michal Klocek <michal.klocek@qt.io>
Diffstat (limited to 'chromium/third_party/blink/renderer/platform/scroll/scroll_animator_base.cc')
-rw-r--r-- | chromium/third_party/blink/renderer/platform/scroll/scroll_animator_base.cc | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/platform/scroll/scroll_animator_base.cc b/chromium/third_party/blink/renderer/platform/scroll/scroll_animator_base.cc new file mode 100644 index 00000000000..db194b61fe3 --- /dev/null +++ b/chromium/third_party/blink/renderer/platform/scroll/scroll_animator_base.cc @@ -0,0 +1,89 @@ +/* + * Copyright (c) 2010, Google 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: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * 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. + * * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT + * OWNER OR 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/platform/scroll/scroll_animator_base.h" + +#include "third_party/blink/renderer/platform/scroll/scrollable_area.h" +#include "third_party/blink/renderer/platform/wtf/math_extras.h" + +namespace blink { + +ScrollAnimatorBase::ScrollAnimatorBase(ScrollableArea* scrollable_area) + : scrollable_area_(scrollable_area) {} + +ScrollAnimatorBase::~ScrollAnimatorBase() = default; + +ScrollOffset ScrollAnimatorBase::ComputeDeltaToConsume( + const ScrollOffset& delta) const { + ScrollOffset new_pos = + scrollable_area_->ClampScrollOffset(current_offset_ + delta); + return new_pos - current_offset_; +} + +ScrollResult ScrollAnimatorBase::UserScroll(ScrollGranularity, + const ScrollOffset& delta) { + ScrollOffset consumed_delta = ComputeDeltaToConsume(delta); + ScrollOffset new_pos = current_offset_ + consumed_delta; + if (current_offset_ == new_pos) + return ScrollResult(false, false, delta.Width(), delta.Height()); + + current_offset_ = new_pos; + + NotifyOffsetChanged(); + + return ScrollResult(consumed_delta.Width(), consumed_delta.Height(), + delta.Width() - consumed_delta.Width(), + delta.Height() - consumed_delta.Height()); +} + +void ScrollAnimatorBase::ScrollToOffsetWithoutAnimation( + const ScrollOffset& offset) { + current_offset_ = offset; + NotifyOffsetChanged(); +} + +void ScrollAnimatorBase::SetCurrentOffset(const ScrollOffset& offset) { + current_offset_ = offset; +} + +ScrollOffset ScrollAnimatorBase::CurrentOffset() const { + return current_offset_; +} + +void ScrollAnimatorBase::NotifyOffsetChanged() { + ScrollOffsetChanged(current_offset_, kUserScroll); +} + +void ScrollAnimatorBase::Trace(blink::Visitor* visitor) { + visitor->Trace(scrollable_area_); + ScrollAnimatorCompositorCoordinator::Trace(visitor); +} + +} // namespace blink |