chromium/third_party/skia/modules/skottie/src/effects/MotionTileEffect.cpp

/*
 * Copyright 2019 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "include/core/SkBlendMode.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPicture.h"
#include "include/core/SkPictureRecorder.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkSamplingOptions.h"
#include "include/core/SkScalar.h"
#include "include/core/SkShader.h"
#include "include/core/SkSize.h"
#include "include/core/SkTileMode.h"
#include "include/effects/SkGradientShader.h"
#include "include/private/base/SkAssert.h"
#include "include/private/base/SkPoint_impl.h"
#include "include/private/base/SkTPin.h"
#include "include/private/base/SkTo.h"
#include "modules/skottie/src/Adapter.h"
#include "modules/skottie/src/SkottiePriv.h"
#include "modules/skottie/src/SkottieValue.h"
#include "modules/skottie/src/effects/Effects.h"
#include "modules/sksg/include/SkSGNode.h"
#include "modules/sksg/include/SkSGRenderNode.h"

#include <algorithm>
#include <cmath>
#include <cstddef>
#include <utility>
#include <vector>

namespace skjson {
class ArrayValue;
}
namespace sksg {
class InvalidationController;
}

namespace skottie {
namespace internal {

namespace  {

// AE motion tile effect semantics
// (https://helpx.adobe.com/after-effects/using/stylize-effects.html#motion_tile_effect):
//
//   - the full content of the layer is mapped to a tile: tile_center, tile_width, tile_height
//
//   - tiles are repeated in both dimensions to fill the output area: output_width, output_height
//
//   - tiling mode is either kRepeat (default) or kMirror (when mirror_edges == true)
//
//   - for a non-zero phase, alternating vertical columns (every other column) are offset by
//     the specified amount
//
//   - when horizontal_phase is true, the phase is applied to horizontal rows instead of columns
//
class TileRenderNode final : public sksg::CustomRenderNode { … };

class MotionTileAdapter final : public DiscardableAdapterBase<MotionTileAdapter, TileRenderNode> { … };

}  // namespace

sk_sp<sksg::RenderNode> EffectBuilder::attachMotionTileEffect(const skjson::ArrayValue& jprops,
                                                              sk_sp<sksg::RenderNode> layer) const { … }

} // namespace internal
} // namespace skottie