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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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/scrollbar_layer_impl_base.h" | 5 #include "cc/layers/scrollbar_layer_impl_base.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 #include "cc/trees/layer_tree_impl.h" | 8 #include "cc/layers/layer.h" |
9 #include "ui/gfx/rect_conversions.h" | 9 #include "ui/gfx/rect_conversions.h" |
10 | 10 |
11 namespace cc { | 11 namespace cc { |
12 | 12 |
13 ScrollbarLayerImplBase::ScrollbarLayerImplBase( | 13 ScrollbarLayerImplBase::ScrollbarLayerImplBase( |
14 LayerTreeImpl* tree_impl, | 14 LayerTreeImpl* tree_impl, |
15 int id, | 15 int id, |
16 ScrollbarOrientation orientation, | 16 ScrollbarOrientation orientation, |
17 bool is_left_side_vertical_scrollbar, | 17 bool is_left_side_vertical_scrollbar) |
18 bool is_overlay) | |
19 : LayerImpl(tree_impl, id), | 18 : LayerImpl(tree_impl, id), |
20 scroll_layer_(NULL), | 19 scroll_layer_id_(Layer::INVALID_ID), |
21 clip_layer_(NULL), | 20 is_overlay_scrollbar_(false), |
22 is_overlay_scrollbar_(is_overlay), | |
23 thumb_thickness_scale_factor_(1.f), | 21 thumb_thickness_scale_factor_(1.f), |
24 current_pos_(0.f), | 22 current_pos_(0.f), |
25 maximum_(0), | 23 maximum_(0), |
26 orientation_(orientation), | 24 orientation_(orientation), |
27 is_left_side_vertical_scrollbar_(is_left_side_vertical_scrollbar), | 25 is_left_side_vertical_scrollbar_(is_left_side_vertical_scrollbar), |
28 vertical_adjust_(0.f), | 26 vertical_adjust_(0.f), |
29 visible_to_total_length_ratio_(1.f) {} | 27 visible_to_total_length_ratio_(1.f) {} |
30 | 28 |
31 ScrollbarLayerImplBase::~ScrollbarLayerImplBase() { | |
32 } | |
33 | |
34 void ScrollbarLayerImplBase::PushPropertiesTo(LayerImpl* layer) { | 29 void ScrollbarLayerImplBase::PushPropertiesTo(LayerImpl* layer) { |
35 LayerImpl::PushPropertiesTo(layer); | 30 LayerImpl::PushPropertiesTo(layer); |
36 DCHECK(layer->ToScrollbarLayer()); | |
37 layer->ToScrollbarLayer()->set_is_overlay_scrollbar(is_overlay_scrollbar_); | |
38 PushScrollClipPropertiesTo(layer); | |
39 } | |
40 | |
41 void ScrollbarLayerImplBase::PushScrollClipPropertiesTo(LayerImpl* layer) { | |
42 DCHECK(layer->ToScrollbarLayer()); | |
43 layer->ToScrollbarLayer()->SetScrollLayerById(ScrollLayerId()); | |
44 layer->ToScrollbarLayer()->SetClipLayerById(ClipLayerId()); | |
45 } | 31 } |
46 | 32 |
47 ScrollbarLayerImplBase* ScrollbarLayerImplBase::ToScrollbarLayer() { | 33 ScrollbarLayerImplBase* ScrollbarLayerImplBase::ToScrollbarLayer() { |
48 return this; | 34 return this; |
49 } | 35 } |
50 | 36 |
51 void ScrollbarLayerImplBase::SetScrollLayerById(int id) { | |
52 LayerImpl* scroll_layer = layer_tree_impl()->LayerById(id); | |
53 if (scroll_layer_ == scroll_layer) | |
54 return; | |
55 | |
56 if (scroll_layer_) | |
57 scroll_layer_->RemoveScrollbar(this); | |
58 scroll_layer_ = scroll_layer; | |
59 if (scroll_layer_) | |
60 scroll_layer_->AddScrollbar(this); | |
61 } | |
62 | |
63 void ScrollbarLayerImplBase::SetClipLayerById(int id) { | |
64 LayerImpl* clip_layer = layer_tree_impl()->LayerById(id); | |
65 if (clip_layer_ == clip_layer) | |
66 return; | |
67 | |
68 if (clip_layer_) | |
69 clip_layer_->RemoveScrollbar(this); | |
70 clip_layer_ = clip_layer; | |
71 if (clip_layer_) | |
72 clip_layer_->AddScrollbar(this); | |
73 } | |
74 | |
75 gfx::Rect ScrollbarLayerImplBase::ScrollbarLayerRectToContentRect( | 37 gfx::Rect ScrollbarLayerImplBase::ScrollbarLayerRectToContentRect( |
76 const gfx::RectF& layer_rect) const { | 38 const gfx::RectF& layer_rect) const { |
77 // Don't intersect with the bounds as in LayerRectToContentRect() because | 39 // Don't intersect with the bounds as in LayerRectToContentRect() because |
78 // layer_rect here might be in coordinates of the containing layer. | 40 // layer_rect here might be in coordinates of the containing layer. |
79 gfx::RectF content_rect = gfx::ScaleRect(layer_rect, | 41 gfx::RectF content_rect = gfx::ScaleRect(layer_rect, |
80 contents_scale_x(), | 42 contents_scale_x(), |
81 contents_scale_y()); | 43 contents_scale_y()); |
82 return gfx::ToEnclosingRect(content_rect); | 44 return gfx::ToEnclosingRect(content_rect); |
83 } | 45 } |
84 | 46 |
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208 ? bounds().width() - thumb_thickness | 170 ? bounds().width() - thumb_thickness |
209 : thumb_thickness_adjustment, | 171 : thumb_thickness_adjustment, |
210 thumb_offset, | 172 thumb_offset, |
211 thumb_thickness - thumb_thickness_adjustment, | 173 thumb_thickness - thumb_thickness_adjustment, |
212 thumb_length); | 174 thumb_length); |
213 } | 175 } |
214 | 176 |
215 return ScrollbarLayerRectToContentRect(thumb_rect); | 177 return ScrollbarLayerRectToContentRect(thumb_rect); |
216 } | 178 } |
217 | 179 |
218 void ScrollbarLayerImplBase::ScrollbarParametersDidChange() { | |
219 if (!clip_layer_ || !scroll_layer_) | |
220 return; | |
221 | |
222 scroll_layer_->SetScrollbarPosition(this, clip_layer_); | |
223 } | |
224 | |
225 } // namespace cc | 180 } // namespace cc |
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