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// Copyright 2017 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 CHROME_BROWSER_UI_VIEWS_NAV_BUTTON_PROVIDER_H_
#define CHROME_BROWSER_UI_VIEWS_NAV_BUTTON_PROVIDER_H_
#include "build/buildflag.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/features.h"
#if !BUILDFLAG(ENABLE_NATIVE_WINDOW_NAV_BUTTONS)
#error "Include not allowed."
#endif
namespace chrome {
enum class FrameButtonDisplayType;
}
namespace gfx {
class ImageSkia;
class Insets;
} // namespace gfx
namespace views {
class NavButtonProvider {
public:
virtual ~NavButtonProvider() {}
// Redraws all images and updates all size state. |top_area_height|
// is the total available height to render the buttons, and buttons
// may be drawn larger when more height is available. |active|
// indicates if the window the buttons reside in has activation.
virtual void RedrawImages(int top_area_height,
bool maximized,
bool active) = 0;
// Gets the cached button image corresponding to |type| and |state|.
virtual gfx::ImageSkia GetImage(chrome::FrameButtonDisplayType type,
views::Button::ButtonState state) const = 0;
// Gets the external margin around each button. The left inset
// represents the leading margin, and the right inset represents the
// trailing margin.
virtual gfx::Insets GetNavButtonMargin(
chrome::FrameButtonDisplayType type) const = 0;
// Gets the internal spacing (padding + border) of the top area.
// The left inset represents the leading spacing, and the right
// inset represents the trailing spacing.
virtual gfx::Insets GetTopAreaSpacing() const = 0;
// Gets the spacing to be used to separate buttons.
virtual int GetInterNavButtonSpacing() const = 0;
// Creates a background for the profile chooser button.
virtual std::unique_ptr<Background> CreateAvatarButtonBackground(
const views::Button* button) const = 0;
// Calculates the profile chooser button's size and spacing.
virtual void CalculateCaptionButtonLayout(
const gfx::Size& content_size,
int top_area_height,
gfx::Size* caption_button_size,
gfx::Insets* caption_button_spacing) const = 0;
};
} // namespace views
#endif // CHROME_BROWSER_UI_VIEWS_NAV_BUTTON_PROVIDER_H_
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