chromium/ui/views/controls/scrollbar/scroll_bar_views.cc

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/views/controls/scrollbar/scroll_bar_views.h"

#include <algorithm>
#include <memory>
#include <utility>

#include "base/check.h"
#include "base/memory/raw_ptr.h"
#include "base/notreached.h"
#include "third_party/abseil-cpp/absl/types/variant.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/events/keycodes/keyboard_codes.h"
#include "ui/gfx/canvas.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/controls/focusable_border.h"
#include "ui/views/controls/scrollbar/base_scroll_bar_thumb.h"
#include "ui/views/controls/scrollbar/scroll_bar.h"
#include "ui/views/controls/scrollbar/scroll_bar_button.h"
#include "ui/views/layout/flex_layout.h"
#include "ui/views/view_class_properties.h"

namespace views {

namespace {

// Wrapper for the scroll thumb
class ScrollBarThumb : public BaseScrollBarThumb { … };

ScrollBarThumb::ScrollBarThumb(ScrollBar* scroll_bar)
    : … { … }

ScrollBarThumb::~ScrollBarThumb() = default;

gfx::Size ScrollBarThumb::CalculatePreferredSize(
    const SizeBounds& /*available_size*/) const { … }

void ScrollBarThumb::OnPaint(gfx::Canvas* canvas) { … }

void ScrollBarThumb::OnThemeChanged() { … }

ui::NativeTheme::ExtraParams ScrollBarThumb::GetNativeThemeParams() const { … }

ui::NativeTheme::Part ScrollBarThumb::GetNativeThemePart() const { … }

ui::NativeTheme::State ScrollBarThumb::GetNativeThemeState() const { … }

BEGIN_METADATA(…)

}  // namespace

ScrollBarViews::ScrollBarViews(Orientation orientation)
    : … { … }

ScrollBarViews::~ScrollBarViews() = default;

// static
int ScrollBarViews::GetVerticalScrollBarWidth(const ui::NativeTheme* theme) { … }

void ScrollBarViews::OnPaint(gfx::Canvas* canvas) { … }

int ScrollBarViews::GetThickness() const { … }

gfx::Rect ScrollBarViews::GetTrackBounds() const { … }

BEGIN_METADATA(…)

}  // namespace views