chromium/ui/native_theme/native_theme.h

// 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.

#ifndef UI_NATIVE_THEME_NATIVE_THEME_H_
#define UI_NATIVE_THEME_NATIVE_THEME_H_

#include <map>
#include <optional>

#include "base/containers/flat_map.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/raw_ptr_exclusion.h"
#include "base/observer_list.h"
#include "base/sequence_checker.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "third_party/abseil-cpp/absl/types/variant.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/base/models/menu_separator_types.h"
#include "ui/color/color_id.h"
#include "ui/color/color_provider_key.h"
#include "ui/gfx/color_palette.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/native_theme/caption_style.h"
#include "ui/native_theme/native_theme_export.h"
#include "ui/native_theme/native_theme_observer.h"

namespace cc {
class PaintCanvas;
}

namespace gfx {
class Insets;
class Rect;
class Size;
}

namespace ui {

// This class supports drawing UI controls (like buttons, text fields, lists,
// comboboxes, etc) that look like the native UI controls of the underlying
// platform, such as Windows or Linux. It also supplies default colors for
// dialog box backgrounds, etc., which are obtained from the system theme where
// possible.
//
// The supported control types are listed in the Part enum.  These parts can be
// in any state given by the State enum, where the actual definition of the
// state is part-specific. The supported colors are listed in the ColorId enum.
//
// Some parts require more information than simply the state in order to be
// drawn correctly, and this information is given to the Paint() method via the
// ExtraParams union.  Each part that requires more information has its own
// field in the union.
//
// NativeTheme also supports getting the default size of a given part with
// the GetPartSize() method.
class NATIVE_THEME_EXPORT NativeTheme {};

}  // namespace ui

#endif  // UI_NATIVE_THEME_NATIVE_THEME_H_