Part 10 of cc/ directory shuffles: layers

cc/scrollbar_layer_impl.h

-// Copyright 2012 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_SCROLLBAR_LAYER_IMPL_H_
-#define CC_SCROLLBAR_LAYER_IMPL_H_
-
-#include "cc/base/cc_export.h"
-#include "cc/scrollbar_geometry_fixed_thumb.h"
-#include "cc/scrollbar_layer_impl_base.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebRect.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebVector.h"
-
-namespace cc {
-
-class ScrollView;
-
-class CC_EXPORT ScrollbarLayerImpl : public ScrollbarLayerImplBase {
- public:
-  static scoped_ptr<ScrollbarLayerImpl> Create(
-      LayerTreeImpl* tree_impl,
-      int id,
-      scoped_ptr<ScrollbarGeometryFixedThumb> geometry);
-  virtual ~ScrollbarLayerImpl();
-
-  virtual ScrollbarLayerImpl* ToScrollbarLayer() OVERRIDE;
-  int scroll_layer_id() const { return scroll_layer_id_; }
-  void set_scroll_layer_id(int id) { scroll_layer_id_ = id; }
-
-  void SetScrollbarData(WebKit::WebScrollbar* scrollbar);
-  void SetThumbSize(gfx::Size size);
-
-  void set_vertical_adjust(float vertical_adjust) {
-    vertical_adjust_ = vertical_adjust;
-  }
-  void SetViewportWithinScrollableArea(gfx::RectF scrollable_viewport,
-      gfx::SizeF scrollable_area);
-
-  void set_back_track_resource_id(ResourceProvider::ResourceId id) {
-    back_track_resource_id_ = id;
-  }
-  void set_fore_track_resource_id(ResourceProvider::ResourceId id) {
-    fore_track_resource_id_ = id;
-  }
-  void set_thumb_resource_id(ResourceProvider::ResourceId id) {
-    thumb_resource_id_ = id;
-  }
-  bool HasThumbTexture() { return thumb_resource_id_; }
-
-
-  // ScrollbarLayerImplBase implementation.
-  virtual float CurrentPos() const OVERRIDE;
-  virtual int TotalSize() const OVERRIDE;
-  virtual int Maximum() const OVERRIDE;
-
-  void SetCurrentPos(float current_pos) { current_pos_ = current_pos; }
-  void SetTotalSize(int total_size) { total_size_ = total_size; }
-  void SetMaximum(int maximum) { maximum_ = maximum; }
-
-  virtual WebKit::WebScrollbar::Orientation Orientation() const OVERRIDE;
-
-  virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
-      OVERRIDE;
-  virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
-
-  virtual void AppendQuads(QuadSink* quad_sink,
-                           AppendQuadsData* append_quads_data) OVERRIDE;
-
-  virtual void DidLoseOutputSurface() OVERRIDE;
-
- protected:
-  ScrollbarLayerImpl(LayerTreeImpl* tree_impl,
-                     int id,
-                     scoped_ptr<ScrollbarGeometryFixedThumb> geometry);
-
- private:
-  // nested class only to avoid namespace problem
-  class Scrollbar : public WebKit::WebScrollbar {
-   public:
-    explicit Scrollbar(ScrollbarLayerImpl* owner) : owner_(owner) {}
-
-    // WebScrollbar implementation
-    virtual bool isOverlay() const;
-    virtual int value() const;
-    virtual WebKit::WebPoint location() const;
-    virtual WebKit::WebSize size() const;
-    virtual bool enabled() const;
-    virtual int maximum() const;
-    virtual int totalSize() const;
-    virtual bool isScrollViewScrollbar() const;
-    virtual bool isScrollableAreaActive() const;
-    virtual void getTickmarks(WebKit::WebVector<WebKit::WebRect>& tickmarks)
-        const;
-    virtual WebScrollbar::ScrollbarControlSize controlSize() const;
-    virtual WebScrollbar::ScrollbarPart pressedPart() const;
-    virtual WebScrollbar::ScrollbarPart hoveredPart() const;
-    virtual WebScrollbar::ScrollbarOverlayStyle scrollbarOverlayStyle() const;
-    virtual WebScrollbar::Orientation orientation() const;
-    virtual bool isCustomScrollbar() const;
-
-   private:
-    ScrollbarLayerImpl* owner_;
-
-  };
-
-  virtual const char* LayerTypeAsString() const OVERRIDE;
-
-  gfx::Rect ScrollbarLayerRectToContentRect(gfx::RectF layer_rect) const;
-
-  Scrollbar scrollbar_;
-
-  ResourceProvider::ResourceId back_track_resource_id_;
-  ResourceProvider::ResourceId fore_track_resource_id_;
-  ResourceProvider::ResourceId thumb_resource_id_;
-
-  scoped_ptr<ScrollbarGeometryFixedThumb> geometry_;
-
-  float current_pos_;
-  int total_size_;
-  int maximum_;
-  gfx::Size thumb_size_;
-
-  // Difference between the clip layer's height and the visible viewport
-  // height (which may differ in the presence of top-controls hiding).
-  float vertical_adjust_;
-
-  // Specifies the position and size of the viewport within the scrollable
-  // area (normalized as if the scrollable area is a unit-sized box
-  // [0, 0, 1, 1]).
-  gfx::RectF normalized_viewport_;
-
-  int scroll_layer_id_;
-
-  // Data to implement Scrollbar
-  WebKit::WebScrollbar::ScrollbarOverlayStyle scrollbar_overlay_style_;
-  WebKit::WebVector<WebKit::WebRect> tickmarks_;
-  WebKit::WebScrollbar::Orientation orientation_;
-  WebKit::WebScrollbar::ScrollbarControlSize control_size_;
-  WebKit::WebScrollbar::ScrollbarPart pressed_part_;
-  WebKit::WebScrollbar::ScrollbarPart hovered_part_;
-
-  bool is_scrollable_area_active_;
-  bool is_scroll_view_scrollbar_;
-  bool enabled_;
-  bool is_custom_scrollbar_;
-  bool is_overlay_scrollbar_;
-};
-
-}
-#endif  // CC_SCROLLBAR_LAYER_IMPL_H_