ash/wm/desks/zero_state_button.h - chromium/src - Git at Google

 // Copyright 2021 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 ASH_WM_DESKS_ZERO_STATE_BUTTON_H_
 #define ASH_WM_DESKS_ZERO_STATE_BUTTON_H_

 #include "ash/ash_export.h"
 #include "ash/wm/overview/overview_highlight_controller.h"
 #include "ui/views/controls/button/label_button.h"

 namespace ash {

 class DesksBarView;
 class WmHighlightItemBorder;

 // The base class of ZeroStateDefaultDeskButton, ZeroStateNewDeskButton and
 // the InnerNewDeskButton of ExpandedStateNewDeskButton.
 class ASH_EXPORT DeskButtonBase
     : public views::LabelButton,
       public OverviewHighlightController::OverviewHighlightableView {
  public:
   DeskButtonBase(const std::u16string& text,
                  int border_corder_radius,
                  int corner_radius);
   ~DeskButtonBase() override = default;

   // LabelButton:
   const char* GetClassName() const override;
   void OnPaintBackground(gfx::Canvas* canvas) override;
   std::unique_ptr<views::InkDrop> CreateInkDrop() override;
   std::unique_ptr<views::InkDropHighlight> CreateInkDropHighlight()
       const override;
   SkColor GetInkDropBaseColor() const override;
   void OnThemeChanged() override;

   // OverviewHighlightController::OverviewHighlightableView:
   views::View* GetView() override;
   void MaybeActivateHighlightedView() override;
   void MaybeCloseHighlightedView() override;
   void MaybeSwapHighlightedView(bool right) override;
   void OnViewHighlighted() override;
   void OnViewUnhighlighted() override;

   virtual void UpdateButtonState() {}

   // Updates the label's text of the button. E.g, ZeroStateDefaultDeskButton
   // showing the desk's name, which should be updated on desk name changes.
   virtual void UpdateLabelText() {}

   SkColor GetBackgroundColorForTesting() const { return background_color_; }

  protected:
   virtual void OnButtonPressed() = 0;

   SkColor background_color_;

   // If true, paints the button with the background of |background_color_|. The
   // button is painted with the background by default, exception like
   // ZeroStateNewDeskButton only wants to be painted when the mouse hovers.
   bool highlight_on_hover_ = true;

   // Paints the background within the button's bounds by default. But if true,
   // paints the contents' bounds of the button only. For example,
   // InnerNewDeskButton needs to be kept as the same size of the desk preview,
   // which has a gap between the view's contents and the border.
   bool paint_contents_only_ = false;

  private:
   void UpdateBorderState();

   // Owned by this View via `View::border_`. This is just a convenient pointer
   // to it.
   WmHighlightItemBorder* border_ptr_;

   const int corner_radius_;
 };

 // A button in zero state bar showing "Desk 1". Zero state is the state of the
 // desks bar when there's only a single desk available, in which case the bar is
 // shown in a minimized state. Clicking the button will switch to the expanded
 // desks bar and focus on the single desk's name view. The expanded bar will
 // include the single desk and the ExpandedStateNewDeskButton.
 class ASH_EXPORT ZeroStateDefaultDeskButton : public DeskButtonBase {
  public:
   ZeroStateDefaultDeskButton(DesksBarView* bar_view);
   ZeroStateDefaultDeskButton(const ZeroStateDefaultDeskButton&) = delete;
   ZeroStateDefaultDeskButton& operator=(const ZeroStateDefaultDeskButton&) =
       delete;
   ~ZeroStateDefaultDeskButton() override = default;

   // DeskButtonBase:
   const char* GetClassName() const override;
   void OnThemeChanged() override;
   gfx::Size CalculatePreferredSize() const override;
   void OnButtonPressed() override;
   void UpdateLabelText() override;

  private:
   DesksBarView* bar_view_;
 };

 // A button in zero state bar with a plus icon. Zero state is the state of the
 // desks bar when there's only a single desk available, in which case the bar is
 // shown in a minimized state. Clicking the button will create a new desk,
 // switch to the expanded desks bar and focus on the newly-created desks's name
 // view. The expanded bar will include two desks and the
 // ExpandedStateNewDeskButton.
 class ASH_EXPORT ZeroStateNewDeskButton : public DeskButtonBase {
  public:
   ZeroStateNewDeskButton();
   ZeroStateNewDeskButton(const ZeroStateNewDeskButton&) = delete;
   ZeroStateNewDeskButton& operator=(const ZeroStateNewDeskButton&) = delete;
   ~ZeroStateNewDeskButton() override = default;

   // DeskButtonBase:
   const char* GetClassName() const override;
   void OnThemeChanged() override;
   gfx::Size CalculatePreferredSize() const override;
   void OnButtonPressed() override;

   // views::Button:
   void OnMouseEntered(const ui::MouseEvent& event) override;
   void OnMouseExited(const ui::MouseEvent& event) override;
 };

 }  // namespace ash

 #endif  // ASH_WM_DESKS_ZERO_STATE_BUTTON_H_
	// Copyright 2021 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 ASH_WM_DESKS_ZERO_STATE_BUTTON_H_
	#define ASH_WM_DESKS_ZERO_STATE_BUTTON_H_

	#include "ash/ash_export.h"
	#include "ash/wm/overview/overview_highlight_controller.h"
	#include "ui/views/controls/button/label_button.h"

	namespace ash {

	class DesksBarView;
	class WmHighlightItemBorder;

	// The base class of ZeroStateDefaultDeskButton, ZeroStateNewDeskButton and
	// the InnerNewDeskButton of ExpandedStateNewDeskButton.
	class ASH_EXPORT DeskButtonBase
	: public views::LabelButton,
	public OverviewHighlightController::OverviewHighlightableView {
	public:
	DeskButtonBase(const std::u16string& text,
	int border_corder_radius,
	int corner_radius);
	~DeskButtonBase() override = default;

	// LabelButton:
	const char* GetClassName() const override;
	void OnPaintBackground(gfx::Canvas* canvas) override;
	std::unique_ptr<views::InkDrop> CreateInkDrop() override;
	std::unique_ptr<views::InkDropHighlight> CreateInkDropHighlight()
	const override;
	SkColor GetInkDropBaseColor() const override;
	void OnThemeChanged() override;

	// OverviewHighlightController::OverviewHighlightableView:
	views::View* GetView() override;
	void MaybeActivateHighlightedView() override;
	void MaybeCloseHighlightedView() override;
	void MaybeSwapHighlightedView(bool right) override;
	void OnViewHighlighted() override;
	void OnViewUnhighlighted() override;

	virtual void UpdateButtonState() {}

	// Updates the label's text of the button. E.g, ZeroStateDefaultDeskButton
	// showing the desk's name, which should be updated on desk name changes.
	virtual void UpdateLabelText() {}

	SkColor GetBackgroundColorForTesting() const { return background_color_; }

	protected:
	virtual void OnButtonPressed() = 0;

	SkColor background_color_;

	// If true, paints the button with the background of \|background_color_\|. The
	// button is painted with the background by default, exception like
	// ZeroStateNewDeskButton only wants to be painted when the mouse hovers.
	bool highlight_on_hover_ = true;

	// Paints the background within the button's bounds by default. But if true,
	// paints the contents' bounds of the button only. For example,
	// InnerNewDeskButton needs to be kept as the same size of the desk preview,
	// which has a gap between the view's contents and the border.
	bool paint_contents_only_ = false;

	private:
	void UpdateBorderState();

	// Owned by this View via `View::border_`. This is just a convenient pointer
	// to it.
	WmHighlightItemBorder* border_ptr_;

	const int corner_radius_;
	};

	// A button in zero state bar showing "Desk 1". Zero state is the state of the
	// desks bar when there's only a single desk available, in which case the bar is
	// shown in a minimized state. Clicking the button will switch to the expanded
	// desks bar and focus on the single desk's name view. The expanded bar will
	// include the single desk and the ExpandedStateNewDeskButton.
	class ASH_EXPORT ZeroStateDefaultDeskButton : public DeskButtonBase {
	public:
	ZeroStateDefaultDeskButton(DesksBarView* bar_view);
	ZeroStateDefaultDeskButton(const ZeroStateDefaultDeskButton&) = delete;
	ZeroStateDefaultDeskButton& operator=(const ZeroStateDefaultDeskButton&) =
	delete;
	~ZeroStateDefaultDeskButton() override = default;

	// DeskButtonBase:
	const char* GetClassName() const override;
	void OnThemeChanged() override;
	gfx::Size CalculatePreferredSize() const override;
	void OnButtonPressed() override;
	void UpdateLabelText() override;

	private:
	DesksBarView* bar_view_;
	};

	// A button in zero state bar with a plus icon. Zero state is the state of the
	// desks bar when there's only a single desk available, in which case the bar is
	// shown in a minimized state. Clicking the button will create a new desk,
	// switch to the expanded desks bar and focus on the newly-created desks's name
	// view. The expanded bar will include two desks and the
	// ExpandedStateNewDeskButton.
	class ASH_EXPORT ZeroStateNewDeskButton : public DeskButtonBase {
	public:
	ZeroStateNewDeskButton();
	ZeroStateNewDeskButton(const ZeroStateNewDeskButton&) = delete;
	ZeroStateNewDeskButton& operator=(const ZeroStateNewDeskButton&) = delete;
	~ZeroStateNewDeskButton() override = default;

	// DeskButtonBase:
	const char* GetClassName() const override;
	void OnThemeChanged() override;
	gfx::Size CalculatePreferredSize() const override;
	void OnButtonPressed() override;

	// views::Button:
	void OnMouseEntered(const ui::MouseEvent& event) override;
	void OnMouseExited(const ui::MouseEvent& event) override;
	};

	} // namespace ash

	#endif // ASH_WM_DESKS_ZERO_STATE_BUTTON_H_