1 #ifndef DALI_TOOLKIT_TEXT_GLYPH_METRICS_HELPER_H
2 #define DALI_TOOLKIT_TEXT_GLYPH_METRICS_HELPER_H
5 * Copyright (c) 2021 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <dali-toolkit/internal/text/metrics.h>
31 * @brief Some characters can be shaped in more than one glyph.
32 * This struct is used to retrieve metrics from these group of glyphs.
50 FontId fontId; ///< The font id of the glyphs.
51 float fontHeight; ///< The font's height of those glyphs.
52 float width; ///< The width of the group.
53 float advance; ///< The sum of all the advances of all the glyphs.
54 float ascender; ///< The font's ascender.
55 float xBearing; ///< The x bearing of the group.
59 * @brief Returns the number of glyphs of a group of glyphs.
61 * @param[in] glyphIndex The first glyph of the group.
62 * @param[in] lastGlyphPlusOne Index to one after the last glyph.
63 * @param[in] charactersPerGlyphBuffer The number of characters per glyph buffer.
65 * @return The number of glyphs of the group.
67 Length GetNumberOfGlyphsOfGroup(GlyphIndex glyphIndex,
68 GlyphIndex lastGlyphPlusOne,
69 const Length* const charactersPerGlyphBuffer);
72 * @brief Get some glyph's metrics of a group of glyphs formed as a result of shaping one character.
74 * @param[in] glyphIndex The index to the first glyph.
75 * @param[in] numberOfGlyphs The number of glyphs.
76 * @param[out] glyphMetrics Some glyph metrics (font height, advance, ascender and x bearing).
77 * @param[in] glyphsBuffer The glyphs buffer.
78 * @param[in] metrics Used to access metrics from FontClient.
80 void GetGlyphsMetrics(GlyphIndex glyphIndex,
81 Length numberOfGlyphs,
82 GlyphMetrics& glyphMetrics,
83 const GlyphInfo* const glyphsBuffer,
88 } // namespace Toolkit
92 #endif // DALI_TOOLKIT_TEXT_GLYPH_METRICS_HELPER_H