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// 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_LAYERS_HEADS_UP_DISPLAY_LAYER_IMPL_H_
#define CC_LAYERS_HEADS_UP_DISPLAY_LAYER_IMPL_H_
#include <string>
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
#include "cc/base/cc_export.h"
#include "cc/layers/layer_impl.h"
#include "cc/resources/memory_history.h"
#include "cc/resources/scoped_resource.h"
class SkCanvas;
class SkPaint;
class SkTypeface;
struct SkRect;
namespace cc {
class DebugRectHistory;
class FrameRateCounter;
class PaintTimeCounter;
class CC_EXPORT HeadsUpDisplayLayerImpl : public LayerImpl {
public:
static scoped_ptr<HeadsUpDisplayLayerImpl> Create(LayerTreeImpl* tree_impl,
int id) {
return make_scoped_ptr(new HeadsUpDisplayLayerImpl(tree_impl, id));
}
virtual ~HeadsUpDisplayLayerImpl();
virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
OVERRIDE;
virtual bool WillDraw(DrawMode draw_mode,
ResourceProvider* resource_provider) OVERRIDE;
virtual void AppendQuads(QuadSink* quad_sink,
AppendQuadsData* append_quads_data) OVERRIDE;
void UpdateHudTexture(DrawMode draw_mode,
ResourceProvider* resource_provider);
virtual void DidLoseOutputSurface() OVERRIDE;
virtual bool LayerIsAlwaysDamaged() const OVERRIDE;
private:
class Graph {
public:
Graph(double indicator_value, double start_upper_bound);
// Eases the upper bound, which limits what is currently visible in the
// graph, so that the graph always scales to either it's max or
// default_upper_bound.
double UpdateUpperBound();
double value;
double min;
double max;
double current_upper_bound;
const double default_upper_bound;
const double indicator;
};
HeadsUpDisplayLayerImpl(LayerTreeImpl* tree_impl, int id);
virtual const char* LayerTypeAsString() const OVERRIDE;
void UpdateHudContents();
void DrawHudContents(SkCanvas* canvas) const;
void DrawText(SkCanvas* canvas,
SkPaint* paint,
const std::string& text,
SkPaint::Align align,
int size,
int x,
int y) const;
void DrawText(SkCanvas* canvas,
SkPaint* paint,
const std::string& text,
SkPaint::Align align,
int size,
const SkPoint& pos) const;
void DrawGraphBackground(SkCanvas* canvas,
SkPaint* paint,
const SkRect& bounds) const;
void DrawGraphLines(SkCanvas* canvas,
SkPaint* paint,
const SkRect& bounds,
const Graph& graph) const;
SkRect DrawFPSDisplay(SkCanvas* canvas,
const FrameRateCounter* fps_counter,
int right,
int top) const;
SkRect DrawMemoryDisplay(SkCanvas* canvas,
int top,
int right,
int width) const;
SkRect DrawPaintTimeDisplay(SkCanvas* canvas,
const PaintTimeCounter* paint_time_counter,
int top,
int right) const;
void DrawDebugRects(SkCanvas* canvas,
DebugRectHistory* debug_rect_history) const;
scoped_ptr<ScopedResource> hud_resource_;
scoped_ptr<SkCanvas> hud_canvas_;
skia::RefPtr<SkTypeface> typeface_;
Graph fps_graph_;
Graph paint_time_graph_;
MemoryHistory::Entry memory_entry_;
base::TimeTicks time_of_last_graph_update_;
DISALLOW_COPY_AND_ASSIGN(HeadsUpDisplayLayerImpl);
};
} // namespace cc
#endif // CC_LAYERS_HEADS_UP_DISPLAY_LAYER_IMPL_H_
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