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   gfx::Rect GetEnclosingRectInTargetSpace() const override;
  35
  36   void SetThumbThickness(int thumb_thickness);
  37   void SetThumbLength(int thumb_length);
  38   void SetTrackStart(int track_start);
  39   void SetTrackLength(int track_length);
  40
  41   void set_track_ui_resource_id(UIResourceId uid) {
  42     track_ui_resource_id_ = uid;
  43   }
  44   void set_thumb_ui_resource_id(UIResourceId uid) {
  45     thumb_ui_resource_id_ = uid;
  46   }
  47
  48   void set_internal_contents_scale_and_bounds(float content_scale,
  49                                               const gfx::Size& content_bounds) {
  50     internal_contents_scale_ = content_scale;
  51     internal_content_bounds_ = content_bounds;
  52   }
  53
  54  protected:
  55   PaintedScrollbarLayerImpl(LayerTreeImpl* tree_impl,
  56                             int id,
  57                             ScrollbarOrientation orientation);
  58
  59   // ScrollbarLayerImplBase implementation.
  60   int ThumbThickness() const override;
  61   int ThumbLength() const override;
  62   float TrackLength() const override;
  63   int TrackStart() const override;
  64   bool IsThumbResizable() const override;
  65
  66  private:
  67   const char* LayerTypeAsString() const override;
  68
  69   UIResourceId track_ui_resource_id_;
  70   UIResourceId thumb_ui_resource_id_;
  71
  72   float internal_contents_scale_;
  73   gfx::Size internal_content_bounds_;
  74
  75   int thumb_thickness_;
  76   int thumb_length_;
  77   int track_start_;
  78   int track_length_;
  79
  80   DISALLOW_COPY_AND_ASSIGN(PaintedScrollbarLayerImpl);
  81 };
  82
  83 }  // namespace cc
  84 #endif  // CC_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_