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- // Copyright 2013 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef CC_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_
- #define CC_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_
- #include <memory>
- #include "cc/cc_export.h"
- #include "cc/input/scrollbar.h"
- #include "cc/layers/scrollbar_layer_impl_base.h"
- #include "cc/resources/ui_resource_client.h"
- namespace cc {
- class LayerTreeImpl;
- class CC_EXPORT PaintedScrollbarLayerImpl : public ScrollbarLayerImplBase {
- public:
- static std::unique_ptr<PaintedScrollbarLayerImpl> Create(
- LayerTreeImpl* tree_impl,
- int id,
- ScrollbarOrientation orientation,
- bool is_left_side_vertical_scrollbar,
- bool is_overlay);
- PaintedScrollbarLayerImpl(const PaintedScrollbarLayerImpl&) = delete;
- ~PaintedScrollbarLayerImpl() override;
- PaintedScrollbarLayerImpl& operator=(const PaintedScrollbarLayerImpl&) =
- delete;
- // LayerImpl implementation.
- std::unique_ptr<LayerImpl> CreateLayerImpl(
- LayerTreeImpl* tree_impl) const override;
- void PushPropertiesTo(LayerImpl* layer) override;
- bool WillDraw(DrawMode draw_mode,
- viz::ClientResourceProvider* resource_provider) override;
- void AppendQuads(viz::CompositorRenderPass* render_pass,
- AppendQuadsData* append_quads_data) override;
- gfx::Rect GetEnclosingVisibleRectInTargetSpace() const override;
- void SetJumpOnTrackClick(bool jump_on_track_click);
- void SetSupportsDragSnapBack(bool supports_drag_snap_back);
- void SetBackButtonRect(gfx::Rect back_button_rect);
- void SetForwardButtonRect(gfx::Rect forward_button_rect);
- void SetThumbThickness(int thumb_thickness);
- void SetThumbLength(int thumb_length);
- void SetTrackRect(gfx::Rect track_rect);
- void SetScrollbarPaintedOpacity(float opacity);
- void set_track_ui_resource_id(UIResourceId uid) {
- track_ui_resource_id_ = uid;
- }
- void set_thumb_ui_resource_id(UIResourceId uid) {
- thumb_ui_resource_id_ = uid;
- }
- float OverlayScrollbarOpacity() const override;
- void set_internal_contents_scale_and_bounds(float content_scale,
- const gfx::Size& content_bounds) {
- internal_contents_scale_ = content_scale;
- internal_content_bounds_ = content_bounds;
- }
- bool JumpOnTrackClick() const override;
- bool SupportsDragSnapBack() const override;
- gfx::Rect BackButtonRect() const override;
- gfx::Rect ForwardButtonRect() const override;
- gfx::Rect BackTrackRect() const override;
- gfx::Rect ForwardTrackRect() const override;
- int ThumbThickness() const override;
- LayerTreeSettings::ScrollbarAnimator GetScrollbarAnimator() const override;
- protected:
- PaintedScrollbarLayerImpl(LayerTreeImpl* tree_impl,
- int id,
- ScrollbarOrientation orientation,
- bool is_left_side_vertical_scrollbar,
- bool is_overlay);
- // ScrollbarLayerImplBase implementation.
- int ThumbLength() const override;
- float TrackLength() const override;
- int TrackStart() const override;
- bool IsThumbResizable() const override;
- private:
- const char* LayerTypeAsString() const override;
- UIResourceId track_ui_resource_id_;
- UIResourceId thumb_ui_resource_id_;
- // This is relevant in case of Mac overlay scrollbars because they fade out by
- // animating the opacity via Blink paint.
- float painted_opacity_;
- float internal_contents_scale_;
- gfx::Size internal_content_bounds_;
- bool jump_on_track_click_;
- bool supports_drag_snap_back_;
- int thumb_thickness_;
- int thumb_length_;
- gfx::Rect back_button_rect_;
- gfx::Rect forward_button_rect_;
- gfx::Rect track_rect_;
- };
- } // namespace cc
- #endif // CC_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_
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