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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_ARC_INPUT_OVERLAY_UI_ACTION_HIGHLIGHT_H_
#define CHROME_BROWSER_ASH_ARC_INPUT_OVERLAY_UI_ACTION_HIGHLIGHT_H_
#include "base/scoped_observation.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/views/view.h"
#include "ui/views/view_observer.h"
namespace gfx {
class canvas;
} // namespace gfx
namespace arc::input_overlay {
class ActionView;
class DisplayOverlayController;
// ActionHighlight is a highlight circle drawn behind an action when it is
// highlighted.
class ActionHighlight : public views::View, public views::ViewObserver {
METADATA_HEADER(ActionHighlight, views::View)
public:
ActionHighlight(DisplayOverlayController* controller,
ActionView* anchor_view);
ActionHighlight(const ActionHighlight&) = delete;
ActionHighlight& operator=(const ActionHighlight&) = delete;
~ActionHighlight() override;
void UpdateAnchorView(ActionView* anchor_view);
// views::ViewObserver:
void OnViewRemovedFromWidget(views::View*) override;
ActionView* anchor_view() { return anchor_view_; }
private:
void UpdateWidgetBounds();
int GetCircleRadius() const;
// Gets the radius including circle border thickness.
int GetOverallRadius() const;
// views::View:
gfx::Size CalculatePreferredSize(
const views::SizeBounds& available_size) const override;
void OnPaintBackground(gfx::Canvas* canvas) override;
void VisibilityChanged(views::View* starting_from, bool is_visible) override;
raw_ptr<DisplayOverlayController> controller_;
raw_ptr<ActionView> anchor_view_;
// Watches for the anchor view to be destroyed or removed from its widget.
// Prevents the action highlight from lingering after its anchor is
// invalid, which can cause strange behavior.
base::ScopedObservation<View, ViewObserver> observation_{this};
};
} // namespace arc::input_overlay
#endif // CHROME_BROWSER_ASH_ARC_INPUT_OVERLAY_UI_ACTION_HIGHLIGHT_H_
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