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// Copyright 2022 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_STYLE_TAB_SLIDER_BUTTON_H_
#define ASH_STYLE_TAB_SLIDER_BUTTON_H_
#include <string>
#include "ash/ash_export.h"
#include "ash/style/tab_slider.h"
#include "base/memory/raw_ptr.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/base/models/image_model.h"
#include "ui/color/color_id.h"
#include "ui/views/background.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/controls/image_view.h"
namespace gfx {
struct VectorIcon;
} // namespace gfx
namespace views {
class Label;
} // namespace views
namespace ash {
// A base class for tab slider buttons used in `TabSlider`. The button has
// selected and unselected states. When clicking the button, it will be set to
// selected. After a button is added to a tab slider, selecting the button will
// deselect the other buttons in the tab slider.
class ASH_EXPORT TabSliderButton : public views::Button {
METADATA_HEADER(TabSliderButton, views::Button)
public:
TabSliderButton(PressedCallback callback, const std::u16string& tooltip_text);
TabSliderButton(const TabSliderButton&) = delete;
TabSliderButton& operator=(const TabSliderButton&) = delete;
~TabSliderButton() override;
bool selected() const { return selected_; }
// Called when the button is added to a tab slider.
void AddedToSlider(TabSlider* tab_slider);
// Changes the selected state.
void SetSelected(bool selected);
// Returns the recommended color id for the current button state.
ui::ColorId GetColorIdOnButtonState();
private:
// Called when the button selected state is changed.
virtual void OnSelectedChanged() = 0;
// views::Button:
void NotifyClick(const ui::Event& event) override;
// Not owned by button.
raw_ptr<TabSlider> tab_slider_ = nullptr;
// The selected state indicating if the button is selected.
bool selected_ = false;
};
// An extension of `TabSliderButton` which is a circle button with an icon in
// the center. The icon has different color schemes for selected, unselected,
// and disabled states.
class ASH_EXPORT IconSliderButton : public TabSliderButton {
METADATA_HEADER(IconSliderButton, TabSliderButton)
public:
IconSliderButton(PressedCallback callback,
const gfx::VectorIcon* icon,
const std::u16string& tooltip_text_base = u"");
IconSliderButton(const IconSliderButton&) = delete;
IconSliderButton& operator=(const IconSliderButton&) = delete;
~IconSliderButton() override;
private:
// TabSliderButton:
void OnSelectedChanged() override;
// views::Button:
void OnThemeChanged() override;
void PaintButtonContents(gfx::Canvas* canvas) override;
const raw_ptr<const gfx::VectorIcon> icon_;
};
// An extension of `TabSliderButton` which is rounded rect button with a label
// in the center. The label text has different color schemes for selected,
// unselected, and disabled states.
class ASH_EXPORT LabelSliderButton : public TabSliderButton {
METADATA_HEADER(LabelSliderButton, TabSliderButton)
public:
LabelSliderButton(PressedCallback callback,
const std::u16string& text,
const std::u16string& tooltip_text_base = u"");
LabelSliderButton(const LabelSliderButton&) = delete;
LabelSliderButton& operator=(const LabelSliderButton&) = delete;
~LabelSliderButton() override;
private:
// Update label color according to the current button state.
void UpdateLabelColor();
// TabSliderButton:
void OnSelectedChanged() override;
// views::Button:
gfx::Size CalculatePreferredSize(
const views::SizeBounds& available_size) const override;
void StateChanged(ButtonState old_state) override;
// Owned by the view hierarchy.
raw_ptr<views::Label> label_;
};
// A `TabSliderButton` which shows an icon either:
// - Next to a label (`horizontal == true`).
// - Above a label (`horizontal == false`).
class ASH_EXPORT IconLabelSliderButton : public TabSliderButton {
METADATA_HEADER(IconLabelSliderButton, TabSliderButton)
public:
static constexpr TabSlider::InitParams kSliderParams{
/*internal_border_padding=*/4,
/*between_child_spacing=*/0,
/*has_background=*/true,
/*has_selector_animation=*/true,
/*distribute_space_evenly=*/true};
IconLabelSliderButton(PressedCallback callback,
const gfx::VectorIcon* icon,
const std::u16string& text,
const std::u16string& tooltip_text_base = u"",
bool horizontal = false);
IconLabelSliderButton(const IconLabelSliderButton&) = delete;
IconLabelSliderButton& operator=(const IconLabelSliderButton&) = delete;
~IconLabelSliderButton() override;
private:
// views::View:
gfx::Size CalculatePreferredSize(
const views::SizeBounds& available_size) const override;
// Update label color according to the current button state.
void UpdateColors();
// TabSliderButton:
void OnSelectedChanged() override;
// Owned by the views hierarchy.
const raw_ptr<views::ImageView> image_view_;
const raw_ptr<views::Label> label_;
};
} // namespace ash
#endif // ASH_STYLE_TAB_SLIDER_BUTTON_H_
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