chromium/third_party/blink/renderer/modules/canvas/canvas2d/canvas_filter_operation_resolver.cc

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/modules/canvas/canvas2d/canvas_filter_operation_resolver.h"

#include <stdint.h>

#include <algorithm>
#include <optional>
#include <string>
#include <utility>

#include "base/types/expected.h"
#include "third_party/blink/public/mojom/devtools/console_message.mojom-blink.h"
#include "third_party/blink/renderer/bindings/core/v8/dictionary.h"
#include "third_party/blink/renderer/bindings/core/v8/idl_types.h"
#include "third_party/blink/renderer/bindings/core/v8/script_value.h"
#include "third_party/blink/renderer/core/css/css_property_names.h"
#include "third_party/blink/renderer/core/css/css_value.h"
#include "third_party/blink/renderer/core/css/parser/css_parser.h"
#include "third_party/blink/renderer/core/css/parser/css_parser_context.h"
#include "third_party/blink/renderer/core/css/parser/css_parser_mode.h"
#include "third_party/blink/renderer/core/css/resolver/filter_operation_resolver.h"
#include "third_party/blink/renderer/core/css/resolver/style_resolver.h"
#include "third_party/blink/renderer/core/css/style_color.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/inspector/console_message.h"
#include "third_party/blink/renderer/core/style/filter_operation.h"
#include "third_party/blink/renderer/core/style/filter_operations.h"
#include "third_party/blink/renderer/core/style/shadow_data.h"
#include "third_party/blink/renderer/core/svg/svg_enumeration.h"
#include "third_party/blink/renderer/core/svg/svg_enumeration_map.h"
#include "third_party/blink/renderer/core/svg/svg_fe_turbulence_element.h"
#include "third_party/blink/renderer/modules/canvas/canvas2d/canvas_style.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/geometry/length.h"
#include "third_party/blink/renderer/platform/graphics/color.h"
#include "third_party/blink/renderer/platform/graphics/filters/fe_component_transfer.h"
#include "third_party/blink/renderer/platform/graphics/filters/fe_convolve_matrix.h"
#include "third_party/blink/renderer/platform/graphics/filters/fe_turbulence.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_vector.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/wtf/text/string_view.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/point_f.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/geometry/vector2d_f.h"

namespace blink {
class Font;

namespace {
int num_canvas_filter_errors_to_console_allowed_ = …;

ColorMatrixFilterOperation* ResolveColorMatrix(
    const Dictionary& dict,
    ExceptionState& exception_state) { … }

struct KernelMatrix { … };

// For resolving feConvolveMatrix type filters
std::optional<KernelMatrix> GetKernelMatrix(const Dictionary& dict,
                                            ExceptionState& exception_state) { … }

ConvolveMatrixFilterOperation* ResolveConvolveMatrix(
    const Dictionary& dict,
    ExceptionState& exception_state) { … }

ComponentTransferFunction GetComponentTransferFunction(
    const StringView& key,
    const Dictionary& filter,
    ExceptionState& exception_state) { … }

ComponentTransferFilterOperation* ResolveComponentTransfer(
    const Dictionary& dict,
    ExceptionState& exception_state) { … }

StyleColor ResolveFloodColor(ExecutionContext& execution_context,
                             const Dictionary& dict,
                             ExceptionState& exception_state) { … }

base::expected<gfx::PointF, String> ResolveFloatOrVec2f(
    const String property_name,
    const Dictionary& dict,
    ExceptionState& exception_state) { … }

BlurFilterOperation* ResolveBlur(const Dictionary& blur_dict,
                                 ExceptionState& exception_state) { … }

DropShadowFilterOperation* ResolveDropShadow(
    ExecutionContext& execution_context,
    const Dictionary& dict,
    ExceptionState& exception_state) { … }

// https://drafts.fxtf.org/filter-effects/#feTurbulenceElement
TurbulenceFilterOperation* ResolveTurbulence(const Dictionary& dict,
                                             ExceptionState& exception_state) { … }

}  // namespace

FilterOperations CanvasFilterOperationResolver::CreateFilterOperationsFromList(
    const HeapVector<ScriptValue>& filters,
    ExecutionContext& execution_context,
    ExceptionState& exception_state) { … }

FilterOperations
CanvasFilterOperationResolver::CreateFilterOperationsFromCSSFilter(
    const String& filter_string,
    const ExecutionContext& execution_context,
    Element* style_resolution_host,
    const Font& font) { … }

}  // namespace blink