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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_ACCESSIBILITY_UI_ACCESSIBILITY_FOCUS_RING_LAYER_H_
#define ASH_ACCESSIBILITY_UI_ACCESSIBILITY_FOCUS_RING_LAYER_H_
#include "ash/accessibility/ui/accessibility_focus_ring.h"
#include "ash/accessibility/ui/focus_ring_layer.h"
#include "ash/ash_export.h"
#include "ash/public/cpp/accessibility_focus_ring_info.h"
#include "ui/compositor/paint_recorder.h"
namespace ash {
// A subclass of FocusRingLayer intended for use by ChromeVox, Select to Speak
// and Switch Access; it supports nonrectangular focus rings in order to
// highlight groups of elements or a range of text on a page.
class ASH_EXPORT AccessibilityFocusRingLayer : public FocusRingLayer {
public:
explicit AccessibilityFocusRingLayer(AccessibilityLayerDelegate* delegate);
AccessibilityFocusRingLayer(const AccessibilityFocusRingLayer&) = delete;
AccessibilityFocusRingLayer& operator=(const AccessibilityFocusRingLayer&) =
delete;
~AccessibilityFocusRingLayer() override;
// Create the layer and update its bounds and position in the hierarchy.
void Set(const AccessibilityFocusRing& ring);
void SetAppearance(FocusRingType type,
FocusRingStackingOrder stacking_order,
SkColor color,
SkColor secondary_color,
SkColor background_alpha);
SkColor color_for_testing() { return custom_color(); }
private:
// ui::LayerDelegate overrides:
void OnPaintLayer(const ui::PaintContext& context) override;
void DrawGlowFocusRing(ui::PaintRecorder& recorder, cc::PaintFlags& flags);
void DrawSolidFocusRing(ui::PaintRecorder& recorder, cc::PaintFlags& flags);
void DrawDashedFocusRing(ui::PaintRecorder& recorder, cc::PaintFlags& flags);
void DrawFocusBackground(ui::PaintRecorder& recorder);
// The outline of the current focus ring.
AccessibilityFocusRing ring_;
// The type of focus ring.
FocusRingType type_;
// How the focus ring should be stacked relative to other layers.
FocusRingStackingOrder stacking_order_ =
FocusRingStackingOrder::ABOVE_ACCESSIBILITY_BUBBLES;
// The secondary color.
SkColor secondary_color_;
// The color of the background. When fully transparent, no background will be
// drawn.
SkColor background_color_ = SK_ColorTRANSPARENT;
};
} // namespace ash
#endif // ASH_ACCESSIBILITY_UI_ACCESSIBILITY_FOCUS_RING_LAYER_H_
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