1 #ifndef __DALI_TOOLKIT_TEXT_VIEW_INTERFACE_H__
2 #define __DALI_TOOLKIT_TEXT_VIEW_INTERFACE_H__
5 * Copyright (c) 2015 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/public-api/math/vector4.h>
25 #include <dali-toolkit/internal/text/text-definitions.h>
41 * @brief Abstract interface to provide the information necessary displaying text.
44 * - The font & glyph IDs needed to get bitmaps etc. from TextAbstraction
45 * - The visual position of each glyph within the layout
46 * - A window into the text layout e.g. which page of a document to view
58 * @brief Virtual destructor
60 virtual ~ViewInterface();
63 * Retrieves the number of glyphs.
65 * @return The number of glyphs.
67 virtual Length GetNumberOfGlyphs() const = 0;
70 * @brief Retrieves glyphs and positions in the given buffers.
72 * @note The size of the @p glyphs and @p glyphPositions buffers need to be big enough to copy the @p numberOfGlyphs glyphs and positions.
73 * @note The returned number of glyphs may be less than @p numberOfGlyphs if a line has ellipsis.
75 * @param[out] glyphs Pointer to a buffer where the glyphs are copied.
76 * @param[out] glyphPositions Pointer to a buffer where the glyph positions are copied.
77 * @param[in] glyphIndex Index to the first glyph.
78 * @param[in] numberOfGlyphs Number of glyphs to be copied.
80 * @return The number of glyphs.
82 virtual Length GetGlyphs( GlyphInfo* glyphs,
83 Vector2* glyphPositions,
84 GlyphIndex glyphIndex,
85 Length numberOfGlyphs ) const = 0;
88 * @brief Retrieves the text color
90 * @return The text color
92 virtual const Vector4& GetTextColor() const = 0;
95 * @brief Retrieves the shadow offset, 0 indicates no shadow.
97 * @return The shadow offset.
99 virtual const Vector2& GetShadowOffset() const = 0;
102 * @brief Retrieves the shadow color.
104 * @return The shadow color.
106 virtual const Vector4& GetShadowColor() const = 0;
109 * @brief Retrieves the underline color.
111 * @return The underline color.
113 virtual const Vector4& GetUnderlineColor() const = 0;
116 * @brief Returns whether underline is enabled or not.
118 * @return The underline state.
120 virtual bool IsUnderlineEnabled() const = 0;
123 * @brief Retrieves the underline height override
125 * @return Returns the override height for an underline, 0 indicates that adaptor will determine the height
127 virtual float GetUnderlineHeight() const = 0;
133 } // namespace Toolkit
137 #endif // __DALI_TOOLKIT_TEXT_VIEW_INTERFACE_H__