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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 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 "ui/views/controls/scroll_view.h" | 5 #include "ui/views/controls/scroll_view.h" |
| 6 | 6 |
| 7 #include "base/feature_list.h" | 7 #include "base/feature_list.h" |
| 8 #include "base/logging.h" | 8 #include "base/logging.h" |
| 9 #include "base/macros.h" | 9 #include "base/macros.h" |
| 10 #include "ui/compositor/layer_type.h" |
| 10 #include "ui/events/event.h" | 11 #include "ui/events/event.h" |
| 11 #include "ui/gfx/canvas.h" | 12 #include "ui/gfx/canvas.h" |
| 12 #include "ui/native_theme/native_theme.h" | 13 #include "ui/native_theme/native_theme.h" |
| 13 #include "ui/views/background.h" | 14 #include "ui/views/background.h" |
| 14 #include "ui/views/border.h" | 15 #include "ui/views/border.h" |
| 15 #include "ui/views/controls/focus_ring.h" | 16 #include "ui/views/controls/focus_ring.h" |
| 16 #include "ui/views/style/platform_style.h" | 17 #include "ui/views/style/platform_style.h" |
| 17 #include "ui/views/widget/widget.h" | 18 #include "ui/views/widget/widget.h" |
| 18 | 19 |
| 19 namespace views { | 20 namespace views { |
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| 200 } | 201 } |
| 201 | 202 |
| 202 void ScrollView::SetContents(View* a_view) { | 203 void ScrollView::SetContents(View* a_view) { |
| 203 // Protect against clients passing a contents view that has its own Layer. | 204 // Protect against clients passing a contents view that has its own Layer. |
| 204 DCHECK(!a_view->layer()); | 205 DCHECK(!a_view->layer()); |
| 205 if (ScrollsWithLayers()) { | 206 if (ScrollsWithLayers()) { |
| 206 if (!a_view->background() && background_color_ != SK_ColorTRANSPARENT) { | 207 if (!a_view->background() && background_color_ != SK_ColorTRANSPARENT) { |
| 207 a_view->set_background( | 208 a_view->set_background( |
| 208 Background::CreateSolidBackground(background_color_)); | 209 Background::CreateSolidBackground(background_color_)); |
| 209 } | 210 } |
| 210 a_view->SetPaintToLayer(true); | 211 a_view->SetPaintToLayer(ui::LAYER_TEXTURED); |
| 211 a_view->layer()->SetScrollable( | 212 a_view->layer()->SetScrollable( |
| 212 contents_viewport_->layer(), | 213 contents_viewport_->layer(), |
| 213 base::Bind(&ScrollView::OnLayerScrolled, base::Unretained(this))); | 214 base::Bind(&ScrollView::OnLayerScrolled, base::Unretained(this))); |
| 214 } | 215 } |
| 215 SetHeaderOrContents(contents_viewport_, a_view, &contents_); | 216 SetHeaderOrContents(contents_viewport_, a_view, &contents_); |
| 216 } | 217 } |
| 217 | 218 |
| 218 void ScrollView::SetHeader(View* header) { | 219 void ScrollView::SetHeader(View* header) { |
| 219 SetHeaderOrContents(header_viewport_, header, &header_); | 220 SetHeaderOrContents(header_viewport_, header, &header_); |
| 220 } | 221 } |
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| 709 bool ScrollView::ScrollsWithLayers() const { | 710 bool ScrollView::ScrollsWithLayers() const { |
| 710 // Just check for the presence of a layer since it's cheaper than querying the | 711 // Just check for the presence of a layer since it's cheaper than querying the |
| 711 // Feature flag each time. | 712 // Feature flag each time. |
| 712 return contents_viewport_->layer() != nullptr; | 713 return contents_viewport_->layer() != nullptr; |
| 713 } | 714 } |
| 714 | 715 |
| 715 void ScrollView::EnableViewPortLayer() { | 716 void ScrollView::EnableViewPortLayer() { |
| 716 background_color_ = SK_ColorWHITE; | 717 background_color_ = SK_ColorWHITE; |
| 717 contents_viewport_->set_background( | 718 contents_viewport_->set_background( |
| 718 Background::CreateSolidBackground(background_color_)); | 719 Background::CreateSolidBackground(background_color_)); |
| 719 contents_viewport_->SetPaintToLayer(true); | 720 contents_viewport_->SetPaintToLayer(ui::LAYER_TEXTURED); |
| 720 contents_viewport_->layer()->SetMasksToBounds(true); | 721 contents_viewport_->layer()->SetMasksToBounds(true); |
| 721 } | 722 } |
| 722 | 723 |
| 723 void ScrollView::OnLayerScrolled() { | 724 void ScrollView::OnLayerScrolled() { |
| 724 UpdateScrollBarPositions(); | 725 UpdateScrollBarPositions(); |
| 725 ScrollHeader(); | 726 ScrollHeader(); |
| 726 } | 727 } |
| 727 | 728 |
| 728 void ScrollView::ScrollHeader() { | 729 void ScrollView::ScrollHeader() { |
| 729 if (!header_) | 730 if (!header_) |
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| 803 | 804 |
| 804 VariableRowHeightScrollHelper::RowInfo | 805 VariableRowHeightScrollHelper::RowInfo |
| 805 FixedRowHeightScrollHelper::GetRowInfo(int y) { | 806 FixedRowHeightScrollHelper::GetRowInfo(int y) { |
| 806 if (y < top_margin_) | 807 if (y < top_margin_) |
| 807 return RowInfo(0, top_margin_); | 808 return RowInfo(0, top_margin_); |
| 808 return RowInfo((y - top_margin_) / row_height_ * row_height_ + top_margin_, | 809 return RowInfo((y - top_margin_) / row_height_ * row_height_ + top_margin_, |
| 809 row_height_); | 810 row_height_); |
| 810 } | 811 } |
| 811 | 812 |
| 812 } // namespace views | 813 } // namespace views |
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