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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 "cc/base/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 ScrollView;
class CC_EXPORT PaintedScrollbarLayerImpl : public ScrollbarLayerImplBase {
public:
static scoped_ptr<PaintedScrollbarLayerImpl> Create(
LayerTreeImpl* tree_impl,
int id,
ScrollbarOrientation orientation);
virtual ~PaintedScrollbarLayerImpl();
// LayerImpl implementation.
virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
OVERRIDE;
virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
virtual bool WillDraw(DrawMode draw_mode,
ResourceProvider* resource_provider) OVERRIDE;
virtual void AppendQuads(QuadSink* quad_sink,
AppendQuadsData* append_quads_data) OVERRIDE;
void SetThumbThickness(int thumb_thickness);
void SetThumbLength(int thumb_length);
void SetTrackStart(int track_start);
void SetTrackLength(int track_length);
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;
}
protected:
PaintedScrollbarLayerImpl(LayerTreeImpl* tree_impl,
int id,
ScrollbarOrientation orientation);
// ScrollbarLayerImplBase implementation.
virtual int ThumbThickness() const OVERRIDE;
virtual int ThumbLength() const OVERRIDE;
virtual float TrackLength() const OVERRIDE;
virtual int TrackStart() const OVERRIDE;
virtual bool IsThumbResizable() const OVERRIDE;
private:
virtual const char* LayerTypeAsString() const OVERRIDE;
UIResourceId track_ui_resource_id_;
UIResourceId thumb_ui_resource_id_;
int thumb_thickness_;
int thumb_length_;
int track_start_;
int track_length_;
// 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_;
int scroll_layer_id_;
DISALLOW_COPY_AND_ASSIGN(PaintedScrollbarLayerImpl);
};
} // namespace cc
#endif // CC_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_
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