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Issue 1251323002: Plumb smooth scrolling in Chromium compositor (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 5 months ago
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1 // Copyright 2012 The Chromium Authors. All rights reserved. 1 // Copyright 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "cc/layers/layer_impl.h" 5 #include "cc/layers/layer_impl.h"
6 6
7 #include "base/json/json_reader.h" 7 #include "base/json/json_reader.h"
8 #include "base/numerics/safe_conversions.h" 8 #include "base/numerics/safe_conversions.h"
9 #include "base/strings/stringprintf.h" 9 #include "base/strings/stringprintf.h"
10 #include "base/trace_event/trace_event.h" 10 #include "base/trace_event/trace_event.h"
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1275 1275
1276 void LayerImpl::SetUpdateRect(const gfx::Rect& update_rect) { 1276 void LayerImpl::SetUpdateRect(const gfx::Rect& update_rect) {
1277 update_rect_ = update_rect; 1277 update_rect_ = update_rect;
1278 SetNeedsPushProperties(); 1278 SetNeedsPushProperties();
1279 } 1279 }
1280 1280
1281 void LayerImpl::AddDamageRect(const gfx::RectF& damage_rect) { 1281 void LayerImpl::AddDamageRect(const gfx::RectF& damage_rect) {
1282 damage_rect_ = gfx::UnionRects(damage_rect_, damage_rect); 1282 damage_rect_ = gfx::UnionRects(damage_rect_, damage_rect);
1283 } 1283 }
1284 1284
1285 bool LayerImpl::IsExternalScrollActive() const {
1286 return layer_tree_impl_->IsExternalScrollActive();
1287 }
1288
1289 void LayerImpl::SetCurrentScrollOffset(const gfx::ScrollOffset& scroll_offset) { 1285 void LayerImpl::SetCurrentScrollOffset(const gfx::ScrollOffset& scroll_offset) {
1290 DCHECK(IsActive()); 1286 DCHECK(IsActive());
1291 if (scroll_offset_->SetCurrent(scroll_offset)) 1287 if (scroll_offset_->SetCurrent(scroll_offset))
1292 DidUpdateScrollOffset(false); 1288 DidUpdateScrollOffset(false);
1293 } 1289 }
1294 1290
1295 void LayerImpl::SetCurrentScrollOffsetFromDelegate( 1291 void LayerImpl::SetCurrentScrollOffsetFromDelegate(
1296 const gfx::ScrollOffset& scroll_offset) { 1292 const gfx::ScrollOffset& scroll_offset) {
1297 DCHECK(IsActive()); 1293 DCHECK(IsActive());
1298 if (scroll_offset_->SetCurrent(scroll_offset)) 1294 if (scroll_offset_->SetCurrent(scroll_offset))
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1834 } 1830 }
1835 1831
1836 // TODO(enne): the transform needs to come from property trees instead of 1832 // TODO(enne): the transform needs to come from property trees instead of
1837 // draw properties. 1833 // draw properties.
1838 gfx::Vector2dF transform_scales = MathUtil::ComputeTransform2dScaleComponents( 1834 gfx::Vector2dF transform_scales = MathUtil::ComputeTransform2dScaleComponents(
1839 draw_properties().target_space_transform, default_scale); 1835 draw_properties().target_space_transform, default_scale);
1840 return std::max(transform_scales.x(), transform_scales.y()); 1836 return std::max(transform_scales.x(), transform_scales.y());
1841 } 1837 }
1842 1838
1843 } // namespace cc 1839 } // namespace cc
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