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// Copyright 2020 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_DISPLAY_DISPLAY_ALIGNMENT_INDICATOR_H_
#define ASH_DISPLAY_DISPLAY_ALIGNMENT_INDICATOR_H_
#include <memory>
#include "ash/ash_export.h"
#include "base/memory/raw_ptr.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/views/widget/widget.h"
namespace display {
class Display;
} // namespace display
namespace ash {
class IndicatorHighlightView;
class IndicatorPillView;
// DisplayAlignmentIndicator is a container for indicator highlighting a shared
// edge between two displays and a pill that contains an arrow and target
// display's name.
class ASH_EXPORT DisplayAlignmentIndicator {
public:
// Construct and show indicator highlight without a pill.
// |src_display| is the display that the indicator is shown in.
// |bounds| is the position and size of the 1px thick shared edge between
// |src_display| and target display.
static std::unique_ptr<DisplayAlignmentIndicator> Create(
const display::Display& src_display,
const gfx::Rect& bounds);
// Construct and show indicator highlight with a pill.
// |src_display| is the display that the indicator is shown in.
// |bounds| is the position and size of the 1px thick shared edge between
// |src_display| and target display. |target_name| is the name of the adjacent
// display that is displayed in the pill.
static std::unique_ptr<DisplayAlignmentIndicator> CreateWithPill(
const display::Display& src_display,
const gfx::Rect& bounds,
const std::string& target_name);
DisplayAlignmentIndicator(const DisplayAlignmentIndicator&) = delete;
DisplayAlignmentIndicator& operator=(const DisplayAlignmentIndicator&) =
delete;
~DisplayAlignmentIndicator();
int64_t display_id() const { return display_id_; }
// Shows/Hides the indicator.
void Show();
void Hide();
// Updates the position of the indicator according to |bounds|. Used to move
// around preview indicators during dragging. The indicator must NOT have a
// pill.
void Update(const display::Display& display, gfx::Rect bounds);
private:
friend class DisplayAlignmentIndicatorTest;
friend class DisplayAlignmentControllerTest;
// Pill does not render if |target_name| is an empty string.
DisplayAlignmentIndicator(const display::Display& src_display,
const gfx::Rect& bounds,
const std::string& target_name);
// The ID of the display that the indicator is shown on.
const int64_t display_id_;
// View and Widget for showing the blue indicator highlights on the edge of
// the display.
raw_ptr<IndicatorHighlightView, DanglingUntriaged | ExperimentalAsh>
indicator_view_ = nullptr; // NOT OWNED
views::Widget indicator_widget_;
// View and Widget for showing a pill with name of the neighboring display and
// an arrow pointing towards it. May not be initialized if ctor without
// |target_name| is used (for preview indicator).
raw_ptr<IndicatorPillView, DanglingUntriaged | ExperimentalAsh> pill_view_ =
nullptr; // NOT OWNED
std::unique_ptr<views::Widget> pill_widget_;
};
} // namespace ash
#endif // ASH_DISPLAY_DISPLAY_ALIGNMENT_INDICATOR_H_
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