[Media Router] Fix typo in unit test (&& instead of &)
[chromium-blink-merge.git] / cc / layers / scrollbar_layer_impl_base.h
blobda7fa52d1f1909314ff101206c304a024d1ca976
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
3 // found in the LICENSE file.
5 #ifndef CC_LAYERS_SCROLLBAR_LAYER_IMPL_BASE_H_
6 #define CC_LAYERS_SCROLLBAR_LAYER_IMPL_BASE_H_
8 #include "cc/base/cc_export.h"
9 #include "cc/input/scrollbar.h"
10 #include "cc/layers/layer.h"
11 #include "cc/layers/layer_impl.h"
13 namespace cc {
15 class LayerTreeImpl;
17 class CC_EXPORT ScrollbarLayerImplBase : public LayerImpl {
18 public:
19 int ScrollLayerId() const {
20 return scroll_layer_ ? scroll_layer_->id() : Layer::INVALID_ID;
22 int ClipLayerId() const {
23 return clip_layer_ ? clip_layer_->id() : Layer::INVALID_ID;
26 void SetScrollLayerAndClipLayerByIds(int scroll_layer_id, int clip_layer_id);
27 void ClearScrollLayer() { scroll_layer_ = nullptr; }
28 void ClearClipLayer() { clip_layer_ = nullptr; }
30 float current_pos() const { return current_pos_; }
31 bool SetCurrentPos(float current_pos);
32 int maximum() const { return maximum_; }
33 bool SetMaximum(int maximum);
35 bool SetVerticalAdjust(float vertical_adjust);
37 bool is_overlay_scrollbar() const { return is_overlay_scrollbar_; }
38 void set_is_overlay_scrollbar(bool is_overlay) {
39 is_overlay_scrollbar_ = is_overlay;
42 ScrollbarOrientation orientation() const { return orientation_; }
43 bool is_left_side_vertical_scrollbar() {
44 return is_left_side_vertical_scrollbar_;
47 bool CanScrollOrientation() const;
49 void PushPropertiesTo(LayerImpl* layer) override;
50 ScrollbarLayerImplBase* ToScrollbarLayer() override;
51 void PushScrollClipPropertiesTo(LayerImpl* layer);
53 bool SetVisibleToTotalLengthRatio(float ratio);
54 // Thumb quad rect in layer space.
55 virtual gfx::Rect ComputeThumbQuadRect() const;
57 float thumb_thickness_scale_factor() {
58 return thumb_thickness_scale_factor_;
60 bool SetThumbThicknessScaleFactor(float thumb_thickness_scale_factor);
62 void ScrollbarParametersDidChange(bool on_resize);
64 protected:
65 ScrollbarLayerImplBase(LayerTreeImpl* tree_impl,
66 int id,
67 ScrollbarOrientation orientation,
68 bool is_left_side_vertical_scrollbar,
69 bool is_overlay);
70 ~ScrollbarLayerImplBase() override;
72 float visible_to_total_length_ratio() const {
73 return visible_to_total_length_ratio_;
75 float vertical_adjust() const { return vertical_adjust_; }
77 virtual int ThumbThickness() const = 0;
78 virtual int ThumbLength() const = 0;
79 virtual float TrackLength() const = 0;
80 virtual int TrackStart() const = 0;
81 // Indicates whether the thumb length can be changed without going back to the
82 // main thread.
83 virtual bool IsThumbResizable() const = 0;
85 private:
86 LayerImpl* scroll_layer_;
87 LayerImpl* clip_layer_;
88 bool is_overlay_scrollbar_;
90 float thumb_thickness_scale_factor_;
91 float current_pos_;
92 int maximum_;
93 ScrollbarOrientation orientation_;
94 bool is_left_side_vertical_scrollbar_;
96 // Difference between the clip layer's height and the visible viewport
97 // height (which may differ in the presence of top-controls hiding).
98 float vertical_adjust_;
100 float visible_to_total_length_ratio_;
102 DISALLOW_COPY_AND_ASSIGN(ScrollbarLayerImplBase);
105 } // namespace cc
107 #endif // CC_LAYERS_SCROLLBAR_LAYER_IMPL_BASE_H_