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/*
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_RESOLVER_STYLE_BUILDER_CONVERTER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_RESOLVER_STYLE_BUILDER_CONVERTER_H_
#include "cc/input/scroll_snap_data.h"
#include "third_party/blink/renderer/core/css/css_function_value.h"
#include "third_party/blink/renderer/core/css/css_identifier_value.h"
#include "third_party/blink/renderer/core/css/css_primitive_value.h"
#include "third_party/blink/renderer/core/css/css_string_value.h"
#include "third_party/blink/renderer/core/css/css_value.h"
#include "third_party/blink/renderer/core/css/css_value_list.h"
#include "third_party/blink/renderer/core/css/css_value_pair.h"
#include "third_party/blink/renderer/core/css/css_variable_data.h"
#include "third_party/blink/renderer/core/style/grid_area.h"
#include "third_party/blink/renderer/core/style/grid_positions_resolver.h"
#include "third_party/blink/renderer/core/style/named_grid_lines_map.h"
#include "third_party/blink/renderer/core/style/ordered_named_grid_lines.h"
#include "third_party/blink/renderer/core/style/quotes_data.h"
#include "third_party/blink/renderer/core/style/shadow_list.h"
#include "third_party/blink/renderer/core/style/style_offset_rotation.h"
#include "third_party/blink/renderer/core/style/style_reflection.h"
#include "third_party/blink/renderer/core/style/svg_computed_style_defs.h"
#include "third_party/blink/renderer/core/style/transform_origin.h"
#include "third_party/blink/renderer/platform/fonts/font_description.h"
#include "third_party/blink/renderer/platform/geometry/length_size.h"
#include "third_party/blink/renderer/platform/graphics/image_orientation.h"
#include "third_party/blink/renderer/platform/text/tab_size.h"
#include "third_party/blink/renderer/platform/transforms/rotation.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "third_party/blink/renderer/platform/wtf/text/text_encoding.h"
namespace blink {
class ClipPathOperation;
class CSSToLengthConversionData;
class Font;
class FontBuilder;
class RotateTransformOperation;
class ScaleTransformOperation;
class StyleAutoColor;
class StylePath;
class StyleResolverState;
class StyleSVGResource;
class TextSizeAdjust;
class TranslateTransformOperation;
class UnzoomedLength;
class StyleBuilderConverterBase {
STATIC_ONLY(StyleBuilderConverterBase);
public:
static FontSelectionValue ConvertFontStretch(const CSSValue&);
static FontSelectionValue ConvertFontStyle(const CSSValue&);
static FontSelectionValue ConvertFontWeight(const CSSValue&,
FontSelectionValue);
static FontDescription::FontVariantCaps ConvertFontVariantCaps(
const CSSValue&);
static FontDescription::FamilyDescription ConvertFontFamily(
const CSSValue&,
FontBuilder*,
const Document* document_for_count);
static FontDescription::Size ConvertFontSize(
const CSSValue&,
const CSSToLengthConversionData&,
FontDescription::Size parent_size);
};
// Note that we assume the parser only allows valid CSSValue types.
class StyleBuilderConverter {
STATIC_ONLY(StyleBuilderConverter);
public:
static scoped_refptr<StyleReflection> ConvertBoxReflect(StyleResolverState&,
const CSSValue&);
static Color ConvertColor(StyleResolverState&,
const CSSValue&,
bool for_visited_link = false);
template <typename T>
static T ConvertComputedLength(StyleResolverState&, const CSSValue&);
static LengthBox ConvertClip(StyleResolverState&, const CSSValue&);
static scoped_refptr<ClipPathOperation> ConvertClipPath(StyleResolverState&,
const CSSValue&);
static scoped_refptr<StyleSVGResource> ConvertElementReference(
StyleResolverState&,
const CSSValue&);
static FilterOperations ConvertFilterOperations(StyleResolverState&,
const CSSValue&);
static FilterOperations ConvertOffscreenFilterOperations(const CSSValue&,
const Font&);
template <typename T>
static T ConvertFlags(StyleResolverState&, const CSSValue&);
static FontDescription::FamilyDescription ConvertFontFamily(
StyleResolverState&,
const CSSValue&);
static scoped_refptr<FontFeatureSettings> ConvertFontFeatureSettings(
StyleResolverState&,
const CSSValue&);
static scoped_refptr<FontVariationSettings> ConvertFontVariationSettings(
StyleResolverState&,
const CSSValue&);
static FontDescription::Size ConvertFontSize(StyleResolverState&,
const CSSValue&);
static float ConvertFontSizeAdjust(StyleResolverState&, const CSSValue&);
static FontSelectionValue ConvertFontStretch(StyleResolverState&,
const CSSValue&);
static FontSelectionValue ConvertFontStyle(StyleResolverState&,
const CSSValue&);
static FontSelectionValue ConvertFontWeight(StyleResolverState&,
const CSSValue&);
static FontDescription::FontVariantCaps ConvertFontVariantCaps(
StyleResolverState&,
const CSSValue&);
static FontDescription::VariantLigatures ConvertFontVariantLigatures(
StyleResolverState&,
const CSSValue&);
static FontVariantNumeric ConvertFontVariantNumeric(StyleResolverState&,
const CSSValue&);
static FontVariantEastAsian ConvertFontVariantEastAsian(StyleResolverState&,
const CSSValue&);
static StyleSelfAlignmentData ConvertSelfOrDefaultAlignmentData(
StyleResolverState&,
const CSSValue&);
static StyleContentAlignmentData ConvertContentAlignmentData(
StyleResolverState&,
const CSSValue&);
static GapLength ConvertGapLength(StyleResolverState&, const CSSValue&);
static GridAutoFlow ConvertGridAutoFlow(StyleResolverState&, const CSSValue&);
static GridPosition ConvertGridPosition(StyleResolverState&, const CSSValue&);
static GridTrackSize ConvertGridTrackSize(StyleResolverState&,
const CSSValue&);
static Vector<GridTrackSize> ConvertGridTrackSizeList(StyleResolverState&,
const CSSValue&);
template <typename T>
static T ConvertLineWidth(StyleResolverState&, const CSSValue&);
static float ConvertBorderWidth(StyleResolverState&, const CSSValue&);
static GapLength ConvertGapLength(const StyleResolverState&, const CSSValue&);
static Length ConvertLength(const StyleResolverState&, const CSSValue&);
static UnzoomedLength ConvertUnzoomedLength(const StyleResolverState&,
const CSSValue&);
static float ConvertZoom(const StyleResolverState&, const CSSValue&);
static Length ConvertLengthOrAuto(const StyleResolverState&, const CSSValue&);
static Length ConvertLengthSizing(StyleResolverState&, const CSSValue&);
static Length ConvertLengthMaxSizing(StyleResolverState&, const CSSValue&);
static TabSize ConvertLengthOrTabSpaces(StyleResolverState&, const CSSValue&);
static Length ConvertLineHeight(StyleResolverState&, const CSSValue&);
static float ConvertNumberOrPercentage(StyleResolverState&, const CSSValue&);
static float ConvertAlpha(StyleResolverState&,
const CSSValue&); // clamps to [0,1]
static StyleOffsetRotation ConvertOffsetRotate(StyleResolverState&,
const CSSValue&);
static LengthPoint ConvertPosition(StyleResolverState&, const CSSValue&);
static LengthPoint ConvertPositionOrAuto(StyleResolverState&,
const CSSValue&);
static float ConvertPerspective(StyleResolverState&, const CSSValue&);
static Length ConvertQuirkyLength(StyleResolverState&, const CSSValue&);
static scoped_refptr<QuotesData> ConvertQuotes(StyleResolverState&,
const CSSValue&);
static LengthSize ConvertRadius(StyleResolverState&, const CSSValue&);
static EPaintOrder ConvertPaintOrder(StyleResolverState&, const CSSValue&);
static ShadowData ConvertShadow(const CSSToLengthConversionData&,
StyleResolverState*,
const CSSValue&);
static scoped_refptr<ShadowList> ConvertShadowList(StyleResolverState&,
const CSSValue&);
static ShapeValue* ConvertShapeValue(StyleResolverState&, const CSSValue&);
static float ConvertSpacing(StyleResolverState&, const CSSValue&);
template <CSSValueID IdForNone>
static AtomicString ConvertString(StyleResolverState&, const CSSValue&);
static scoped_refptr<SVGDashArray> ConvertStrokeDasharray(StyleResolverState&,
const CSSValue&);
static StyleColor ConvertStyleColor(StyleResolverState&,
const CSSValue&,
bool for_visited_link = false);
static StyleAutoColor ConvertStyleAutoColor(StyleResolverState&,
const CSSValue&,
bool for_visited_link = false);
static SVGPaint ConvertSVGPaint(StyleResolverState&, const CSSValue&);
static TextEmphasisPosition ConvertTextTextEmphasisPosition(
StyleResolverState&,
const CSSValue&);
static float ConvertTextStrokeWidth(StyleResolverState&, const CSSValue&);
static TextSizeAdjust ConvertTextSizeAdjust(StyleResolverState&,
const CSSValue&);
static TextUnderlinePosition ConvertTextUnderlinePosition(
StyleResolverState& state,
const CSSValue& value);
static TransformOperations ConvertTransformOperations(StyleResolverState&,
const CSSValue&);
static TransformOrigin ConvertTransformOrigin(StyleResolverState&,
const CSSValue&);
static void ConvertGridTrackList(
const CSSValue&,
Vector<GridTrackSize>&,
NamedGridLinesMap&,
OrderedNamedGridLines&,
Vector<GridTrackSize>& auto_repeat_track_sizes,
NamedGridLinesMap&,
OrderedNamedGridLines&,
size_t& auto_repeat_insertion_point,
AutoRepeatType&,
StyleResolverState&);
static void CreateImplicitNamedGridLinesFromGridArea(
const NamedGridAreaMap&,
NamedGridLinesMap&,
GridTrackSizingDirection);
static void ConvertOrderedNamedGridLinesMapToNamedGridLinesMap(
const OrderedNamedGridLines&,
NamedGridLinesMap&);
static cc::ScrollSnapType ConvertSnapType(StyleResolverState&,
const CSSValue&);
static cc::ScrollSnapAlign ConvertSnapAlign(StyleResolverState&,
const CSSValue&);
static scoped_refptr<TranslateTransformOperation> ConvertTranslate(
StyleResolverState&,
const CSSValue&);
static scoped_refptr<RotateTransformOperation> ConvertRotate(
StyleResolverState&,
const CSSValue&);
static scoped_refptr<ScaleTransformOperation> ConvertScale(
StyleResolverState&,
const CSSValue&);
static RespectImageOrientationEnum ConvertImageOrientation(
StyleResolverState&,
const CSSValue&);
static scoped_refptr<StylePath> ConvertPathOrNone(StyleResolverState&,
const CSSValue&);
static scoped_refptr<BasicShape> ConvertOffsetPath(StyleResolverState&,
const CSSValue&);
static StyleOffsetRotation ConvertOffsetRotate(const CSSValue&);
template <CSSValueID cssValueFor0, CSSValueID cssValueFor100>
static Length ConvertPositionLength(StyleResolverState&, const CSSValue&);
static Rotation ConvertRotation(const CSSValue&);
static const CSSValue& ConvertRegisteredPropertyInitialValue(const Document&,
const CSSValue&);
static const CSSValue& ConvertRegisteredPropertyValue(
const StyleResolverState&,
const CSSValue&,
const String& base_url,
const WTF::TextEncoding&);
static scoped_refptr<CSSVariableData> ConvertRegisteredPropertyVariableData(
const CSSValue&,
bool is_animation_tainted);
static IntrinsicLength ConvertIntrinsicLength(StyleResolverState&,
const CSSValue&);
private:
static const CSSToLengthConversionData& CssToLengthConversionData(
StyleResolverState&);
};
template <typename T>
T StyleBuilderConverter::ConvertComputedLength(StyleResolverState& state,
const CSSValue& value) {
return To<CSSPrimitiveValue>(value).ComputeLength<T>(
CssToLengthConversionData(state));
}
template <typename T>
T StyleBuilderConverter::ConvertFlags(StyleResolverState& state,
const CSSValue& value) {
T flags = static_cast<T>(0);
auto* identifier_value = DynamicTo<CSSIdentifierValue>(value);
if (identifier_value && identifier_value->GetValueID() == CSSValueID::kNone)
return flags;
for (auto& flag_value : To<CSSValueList>(value))
flags |= To<CSSIdentifierValue>(*flag_value).ConvertTo<T>();
return flags;
}
template <typename T>
T StyleBuilderConverter::ConvertLineWidth(StyleResolverState& state,
const CSSValue& value) {
if (auto* identifier_value = DynamicTo<CSSIdentifierValue>(value)) {
CSSValueID value_id = identifier_value->GetValueID();
if (value_id == CSSValueID::kThin)
return 1;
if (value_id == CSSValueID::kMedium)
return 3;
if (value_id == CSSValueID::kThick)
return 5;
NOTREACHED();
return 0;
}
const auto& primitive_value = To<CSSPrimitiveValue>(value);
// FIXME: We are moving to use the full page zoom implementation to handle
// high-dpi. In that case specyfing a border-width of less than 1px would
// result in a border that is one device pixel thick. With this change that
// would instead be rounded up to 2 device pixels. Consider clamping it to
// device pixels or zoom adjusted CSS pixels instead of raw CSS pixels.
// Reference crbug.com/485650 and crbug.com/382483
double result =
primitive_value.ComputeLength<double>(CssToLengthConversionData(state));
if (result > 0.0 && result < 1.0)
return 1.0;
return clampTo<T>(RoundForImpreciseConversion<T>(result),
defaultMinimumForClamp<T>(), defaultMaximumForClamp<T>());
}
template <CSSValueID cssValueFor0, CSSValueID cssValueFor100>
Length StyleBuilderConverter::ConvertPositionLength(StyleResolverState& state,
const CSSValue& value) {
if (const auto* pair = DynamicTo<CSSValuePair>(value)) {
Length length = StyleBuilderConverter::ConvertLength(state, pair->Second());
if (To<CSSIdentifierValue>(pair->First()).GetValueID() == cssValueFor0)
return length;
DCHECK_EQ(To<CSSIdentifierValue>(pair->First()).GetValueID(),
cssValueFor100);
return length.SubtractFromOneHundredPercent();
}
if (auto* identifier_value = DynamicTo<CSSIdentifierValue>(value)) {
switch (identifier_value->GetValueID()) {
case cssValueFor0:
return Length::Percent(0);
case cssValueFor100:
return Length::Percent(100);
case CSSValueID::kCenter:
return Length::Percent(50);
default:
NOTREACHED();
}
}
return StyleBuilderConverter::ConvertLength(state,
To<CSSPrimitiveValue>(value));
}
template <CSSValueID IdForNone>
AtomicString StyleBuilderConverter::ConvertString(StyleResolverState&,
const CSSValue& value) {
if (auto* string_value = DynamicTo<CSSStringValue>(value))
return AtomicString(string_value->Value());
DCHECK_EQ(To<CSSIdentifierValue>(value).GetValueID(), IdForNone);
return g_null_atom;
}
} // namespace blink
#endif
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