cc/layers/painted_scrollbar_layer_impl.h

   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.
   4
   5 #ifndef CC_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_
   6 #define CC_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_
   7
   8 #include "cc/base/cc_export.h"
   9 #include "cc/input/scrollbar.h"
  10 #include "cc/layers/scrollbar_layer_impl_base.h"
  11 #include "cc/resources/ui_resource_client.h"
  12
  13 namespace cc {
  14
  15 class LayerTreeImpl;
  16 class ScrollView;
  17
  18 class CC_EXPORT PaintedScrollbarLayerImpl : public ScrollbarLayerImplBase {
  19  public:
  20   static scoped_ptr<PaintedScrollbarLayerImpl> Create(
  21       LayerTreeImpl* tree_impl,
  22       int id,
  23       ScrollbarOrientation orientation);
  24   ~PaintedScrollbarLayerImpl() override;
  25
  26   // LayerImpl implementation.
  27   scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
  28   void PushPropertiesTo(LayerImpl* layer) override;
  29
  30   bool WillDraw(DrawMode draw_mode,
  31                 ResourceProvider* resource_provider) override;
  32   void AppendQuads(RenderPass* render_pass,
  33                    AppendQuadsData* append_quads_data) override;
  34
  35   void SetThumbThickness(int thumb_thickness);
  36   void SetThumbLength(int thumb_length);
  37   void SetTrackStart(int track_start);
  38   void SetTrackLength(int track_length);
  39
  40   void set_track_ui_resource_id(UIResourceId uid) {
  41     track_ui_resource_id_ = uid;
  42   }
  43   void set_thumb_ui_resource_id(UIResourceId uid) {
  44     thumb_ui_resource_id_ = uid;
  45   }
  46
  47   void set_internal_contents_scale_and_bounds(float content_scale,
  48                                               const gfx::Size& content_bounds) {
  49     internal_contents_scale_ = content_scale;
  50     internal_content_bounds_ = content_bounds;
  51   }
  52
  53  protected:
  54   PaintedScrollbarLayerImpl(LayerTreeImpl* tree_impl,
  55                             int id,
  56                             ScrollbarOrientation orientation);
  57
  58   // ScrollbarLayerImplBase implementation.
  59   int ThumbThickness() const override;
  60   int ThumbLength() const override;
  61   float TrackLength() const override;
  62   int TrackStart() const override;
  63   bool IsThumbResizable() const override;
  64
  65  private:
  66   const char* LayerTypeAsString() const override;
  67
  68   UIResourceId track_ui_resource_id_;
  69   UIResourceId thumb_ui_resource_id_;
  70
  71   float internal_contents_scale_;
  72   gfx::Size internal_content_bounds_;
  73
  74   int thumb_thickness_;
  75   int thumb_length_;
  76   int track_start_;
  77   int track_length_;
  78
  79   DISALLOW_COPY_AND_ASSIGN(PaintedScrollbarLayerImpl);
  80 };
  81
  82 }  // namespace cc
  83 #endif  // CC_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_