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/*
* Copyright 2015 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef COBALT_LAYOUT_INLINE_LEVEL_REPLACED_BOX_H_
#define COBALT_LAYOUT_INLINE_LEVEL_REPLACED_BOX_H_
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/optional.h"
#include "cobalt/cssom/css_declared_style_data.h"
#include "cobalt/cssom/css_transition_set.h"
#include "cobalt/layout/box.h"
#include "cobalt/layout/paragraph.h"
#include "cobalt/layout/replaced_box.h"
namespace cobalt {
namespace layout {
class UsedStyleProvider;
class InlineLevelReplacedBox : public ReplacedBox {
public:
InlineLevelReplacedBox(
const scoped_refptr<cssom::CSSComputedStyleDeclaration>&
css_computed_style_declaration,
const ReplaceImageCB& replace_image_cb,
const scoped_refptr<Paragraph>& paragraph, int32 text_position,
const base::optional<LayoutUnit>& maybe_intrinsic_width,
const base::optional<LayoutUnit>& maybe_intrinsic_height,
const base::optional<float>& maybe_intrinsic_ratio,
UsedStyleProvider* used_style_provider,
LayoutStatTracker* layout_stat_tracker);
// From |Box|.
Level GetLevel() const OVERRIDE;
bool DoesFulfillEllipsisPlacementRequirement() const OVERRIDE;
void DoPreEllipsisPlacementProcessing() OVERRIDE;
void DoPostEllipsisPlacementProcessing() OVERRIDE;
bool IsHiddenByEllipsis() const OVERRIDE;
protected:
// From |Box|.
#ifdef COBALT_BOX_DUMP_ENABLED
void DumpClassName(std::ostream* stream) const OVERRIDE;
#endif // COBALT_BOX_DUMP_ENABLED
// From |ReplacedBox|.
void UpdateHorizontalMargins(
LayoutUnit containing_block_width, LayoutUnit border_box_width,
const base::optional<LayoutUnit>& maybe_margin_left,
const base::optional<LayoutUnit>& maybe_margin_right) OVERRIDE;
private:
// From |Box|.
void DoPlaceEllipsisOrProcessPlacedEllipsis(
BaseDirection base_direction, LayoutUnit desired_offset,
bool* is_placement_requirement_met, bool* is_placed,
LayoutUnit* placed_offset) OVERRIDE;
// This flag indicates that the box is fully hidden by the ellipsis and it,
// along with its contents will not be visible.
// "Implementations must hide characters and atomic inline-level elements at
// the applicable edge(s) of the line as necessary to fit the ellipsis."
// https://www.w3.org/TR/css3-ui/#propdef-text-overflow
bool is_hidden_by_ellipsis_;
// Tracking of the previous value of |is_hidden_by_ellipsis_|, which allows
// for determination of whether or not the value changed during ellipsis
// placement. When this occurs, the cached render tree nodes of this box and
// its ancestors are invalidated.
bool was_hidden_by_ellipsis_;
};
} // namespace layout
} // namespace cobalt
#endif // COBALT_LAYOUT_INLINE_LEVEL_REPLACED_BOX_H_