| /* |
| * Copyright 2017 Google Inc. |
| * |
| * 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 LIB_TXT_SRC_PAINT_RECORD_H_ |
| #define LIB_TXT_SRC_PAINT_RECORD_H_ |
| |
| #include "flutter/fml/logging.h" |
| #include "flutter/fml/macros.h" |
| #include "placeholder_run.h" |
| #include "text_style.h" |
| #include "third_party/skia/include/core/SkFontMetrics.h" |
| #include "third_party/skia/include/core/SkTextBlob.h" |
| |
| namespace txt { |
| |
| // PaintRecord holds the layout data after Paragraph::Layout() is called. This |
| // stores all necessary offsets, blobs, metrics, and more for Skia to draw the |
| // text. |
| class PaintRecord { |
| public: |
| PaintRecord() = delete; |
| |
| ~PaintRecord(); |
| |
| PaintRecord(TextStyle style, |
| SkPoint offset, |
| sk_sp<SkTextBlob> text, |
| SkFontMetrics metrics, |
| size_t line, |
| double x_start, |
| double x_end, |
| bool is_ghost); |
| |
| PaintRecord(TextStyle style, |
| SkPoint offset, |
| sk_sp<SkTextBlob> text, |
| SkFontMetrics metrics, |
| size_t line, |
| double x_start, |
| double x_end, |
| bool is_ghost, |
| PlaceholderRun* placeholder_run); |
| |
| PaintRecord(TextStyle style, |
| sk_sp<SkTextBlob> text, |
| SkFontMetrics metrics, |
| size_t line, |
| double x_start, |
| double x_end, |
| bool is_ghost); |
| |
| PaintRecord(PaintRecord&& other); |
| |
| PaintRecord& operator=(PaintRecord&& other); |
| |
| SkPoint offset() const { return offset_; } |
| |
| void SetOffset(SkPoint pt); |
| |
| SkTextBlob* text() const { return text_.get(); } |
| |
| const SkFontMetrics& metrics() const { return metrics_; } |
| |
| const TextStyle& style() const { return style_; } |
| |
| size_t line() const { return line_; } |
| |
| double x_start() const { return x_start_; } |
| double x_end() const { return x_end_; } |
| double GetRunWidth() const { return x_end_ - x_start_; } |
| |
| PlaceholderRun* GetPlaceholderRun() const { return placeholder_run_; } |
| |
| bool isGhost() const { return is_ghost_; } |
| |
| bool isPlaceholder() const { return placeholder_run_ == nullptr; } |
| |
| private: |
| TextStyle style_; |
| // offset_ is the overall offset of the origin of the SkTextBlob. |
| SkPoint offset_; |
| // SkTextBlob stores the glyphs and coordinates to draw them. |
| sk_sp<SkTextBlob> text_; |
| // FontMetrics stores the measurements of the font used. |
| SkFontMetrics metrics_; |
| size_t line_; |
| double x_start_ = 0.0f; |
| double x_end_ = 0.0f; |
| // 'Ghost' runs represent trailing whitespace. 'Ghost' runs should not have |
| // decorations painted on them and do not impact layout of visible glyphs. |
| bool is_ghost_ = false; |
| // Stores the corresponding PlaceholderRun that the record corresponds to. |
| // When this is nullptr, then the record is of normal text and does not |
| // represent an inline placeholder. |
| PlaceholderRun* placeholder_run_ = nullptr; |
| |
| FML_DISALLOW_COPY_AND_ASSIGN(PaintRecord); |
| }; |
| |
| } // namespace txt |
| |
| #endif // LIB_TXT_SRC_PAINT_RECORD_H_ |