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// Copyright 2017 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_GFX_SHADOW_UTIL_H_
#define UI_GFX_SHADOW_UTIL_H_
#include "base/component_export.h"
#include "build/build_config.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/gfx/shadow_value.h"
namespace gfx {
// The shadow style for different UI components.
enum class ShadowStyle {
// The MD style is mainly used for view's shadow.
kMaterialDesign,
#if BUILDFLAG(IS_CHROMEOS)
// The system style is mainly used for Chrome OS UI components.
kChromeOSSystemUI,
#endif
};
// A struct that describes a vector of shadows and their depiction as an image
// suitable for ninebox tiling.
struct COMPONENT_EXPORT(GFX) ShadowDetails {
ShadowDetails(const gfx::ShadowValues& values,
const gfx::ImageSkia& nine_patch_image);
ShadowDetails(const ShadowDetails& other);
~ShadowDetails();
// Returns a cached ShadowDetails for the given elevation, corner radius, and
// shadow style. Creates the ShadowDetails first if necessary.
static const ShadowDetails& Get(
int elevation,
int radius,
ShadowStyle style = ShadowStyle::kMaterialDesign);
// Returns a cached ShadowDetails for the given elevation, corner radius,
// key shadow color, ambient shadow color, and shadow style.
static const ShadowDetails& Get(int elevation,
int radius,
SkColor key_color,
SkColor ambient_color,
ShadowStyle style);
// Returns a cached ShadowDetails for given corner radius and shadow values.
static const ShadowDetails& Get(int radius, const gfx::ShadowValues& values);
static size_t GetDetailsCacheSizeForTest();
// Description of the shadows.
const gfx::ShadowValues values;
// Cached ninebox image based on |values|.
const gfx::ImageSkia nine_patch_image;
};
} // namespace gfx
#endif // UI_GFX_SHADOW_UTIL_H_
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