| /* |
| * Copyright (C) 2011 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_TEXT_COMBINE_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_TEXT_COMBINE_H_ |
| |
| #include "third_party/blink/renderer/core/layout/layout_text.h" |
| #include "third_party/blink/renderer/platform/fonts/font.h" |
| |
| namespace blink { |
| |
| class GraphicsContext; |
| |
| // LayoutTextCombine uses different coordinate systems for layout and |
| // inlineTextBox, because it is treated as 1em-box character in vertical flow |
| // for the layout, while its inline box is in horizontal flow. |
| class LayoutTextCombine final : public LayoutText { |
| public: |
| LayoutTextCombine(Node*, scoped_refptr<StringImpl>); |
| |
| bool IsCombined() const { |
| NOT_DESTROYED(); |
| return is_combined_; |
| } |
| float CombinedTextWidth(const Font& font) const { |
| NOT_DESTROYED(); |
| return font.GetFontDescription().ComputedSize(); |
| } |
| const Font& OriginalFont() const { |
| NOT_DESTROYED(); |
| return Parent()->StyleRef().GetFont(); |
| } |
| void TransformToInlineCoordinates(GraphicsContext&, |
| const PhysicalRect& box_rect, |
| bool clip = false) const; |
| LayoutUnit InlineWidthForLayout() const; |
| |
| const char* GetName() const override { |
| NOT_DESTROYED(); |
| return "LayoutTextCombine"; |
| } |
| |
| private: |
| bool IsCombineText() const override { |
| NOT_DESTROYED(); |
| return true; |
| } |
| float Width(unsigned from, |
| unsigned length, |
| const Font&, |
| LayoutUnit x_position, |
| TextDirection, |
| HashSet<const SimpleFontData*>* fallback_fonts = nullptr, |
| FloatRect* glyph_bounds = nullptr, |
| float expansion = 0) const override; |
| void StyleDidChange(StyleDifference, const ComputedStyle* old_style) override; |
| void TextDidChange() override; |
| void UpdateIsCombined(); |
| void UpdateFontStyleForCombinedText(); |
| |
| float combined_text_width_; |
| float scale_x_; |
| bool is_combined_ : 1; |
| }; |
| |
| template <> |
| struct DowncastTraits<LayoutTextCombine> { |
| static bool AllowFrom(const LayoutObject& object) { |
| return object.IsCombineText(); |
| } |
| }; |
| |
| inline LayoutUnit LayoutTextCombine::InlineWidthForLayout() const { |
| return LayoutUnit::FromFloatCeil(combined_text_width_); |
| } |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_TEXT_COMBINE_H_ |