1 #ifndef DALI_TOOLKIT_TEXT_LABEL_H
2 #define DALI_TOOLKIT_TEXT_LABEL_H
5 * Copyright (c) 2019 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/public-api/controls/control.h>
30 namespace Internal DALI_INTERNAL
35 * @addtogroup dali_toolkit_controls_text_controls
40 * @brief A control which renders a short text string.
42 * Text labels are lightweight, non-editable and do not respond to user input.
44 * @section TextLabelProperties Properties
45 * |%Property enum |String name |Type |Writable|Animatable|
46 * |----------------------------------|---------------------|----------------|--------|----------|
47 * | Property::RENDERING_BACKEND | renderingBackend | INTEGER | O | X |
48 * | Property::TEXT | text | STRING | O | X |
49 * | Property::FONT_FAMILY | fontFamily | STRING | O | X |
50 * | Property::FONT_STYLE | fontStyle | STRING or MAP | O | X |
51 * | Property::POINT_SIZE | pointSize | FLOAT | O | X |
52 * | Property::MULTI_LINE | multiLine | BOOLEAN | O | X |
53 * | Property::HORIZONTAL_ALIGNMENT | horizontalAlignment | STRING | O | X |
54 * | Property::VERTICAL_ALIGNMENT | verticalAlignment | STRING | O | X |
55 * | Property::TEXT_COLOR | textColor | VECTOR4 | O | X |
56 * | Property::ENABLE_MARKUP | enableMarkup | BOOLEAN | O | X |
57 * | Property::ENABLE_AUTO_SCROLL | enableAutoScroll | BOOLEAN | O | X |
58 * | Property::AUTO_SCROLL_SPEED | autoScrollSpeed | INTEGER | O | X |
59 * | Property::AUTO_SCROLL_LOOP_COUNT | autoScrollLoopCount | INTEGER | O | X |
60 * | Property::AUTO_SCROLL_GAP | autoScrollGap | INTEGER | O | X |
61 * | Property::SHADOW | shadow | STRING or MAP | O | X |
62 * | Property::UNDERLINE | underline | STRING or MAP | O | X |
66 class DALI_TOOLKIT_API TextLabel : public Control
71 * @brief Enumeration for the start and end property ranges for this control.
76 PROPERTY_START_INDEX = Control::CONTROL_PROPERTY_END_INDEX + 1, ///< @SINCE_1_0.0
77 PROPERTY_END_INDEX = PROPERTY_START_INDEX + 1000, ///< Reserve property indices @SINCE_1_0.0
79 ANIMATABLE_PROPERTY_START_INDEX = ANIMATABLE_PROPERTY_REGISTRATION_START_INDEX, ///< @SINCE_1_2.60
80 ANIMATABLE_PROPERTY_END_INDEX = ANIMATABLE_PROPERTY_REGISTRATION_START_INDEX + 1000 ///< Reserve animatable property indices @SINCE_1_2.60
84 * @brief Enumeration for the instance of properties belonging to the TextLabel class.
90 * @brief Enumeration for the instance of properties belonging to the TextLabel class.
95 ///////////////////////////////////////////////////////////////////////////////
96 // Event side (non-animatable) properties
97 ///////////////////////////////////////////////////////////////////////////////
100 * @DEPRECATED_1_2.53 No longer be supported and will be ignored.
101 * @brief The type of rendering e.g. bitmap-based.
102 * @details Name "renderingBackend", type Property::INT.
105 RENDERING_BACKEND = PROPERTY_START_INDEX,
108 * @brief The text to display in UTF-8 format.
109 * @details Name "text", type Property::STRING.
115 * @brief The requested font family to use.
116 * @details Name "fontFamily", type Property::STRING.
122 * @brief The requested font style to use.
123 * @details Name "fontStyle", type Property::STRING or Property::MAP.
129 * @brief The size of font in points.
130 * @details Name "pointSize", type Property::FLOAT.
131 * Conversion from Pixel size to Point size:
132 * Point size = Pixel size * 72 / DPI
138 * @brief The single-line or multi-line layout option.
139 * @details Name "multiLine", type Property::BOOLEAN.
141 * @note Default is false.
146 * @brief The line horizontal alignment.
147 * @details Name "horizontalAlignment", type Property::STRING or type HorizontalAlignment::Type (Property::INTEGER)
148 * Values "BEGIN", "CENTER", "END", default BEGIN.
149 * @note Return type is Property::STRING
152 HORIZONTAL_ALIGNMENT,
155 * @brief The line vertical alignment.
156 * @details Name "verticalAlignment", type Property::STRING or type VerticalAlignment::Type (Property::INTEGER).
157 * Values "TOP", "CENTER", "BOTTOM" @SINCE_1_0.0, default TOP.
158 * @note Return type is Property::STRING
164 * @brief Whether the mark-up processing is enabled.
165 * @details Name "enableMarkup", type Property::BOOLEAN.
167 * @note Default is false.
172 * @brief Starts or stops auto scrolling.
173 * @details Name "enableAutoScroll", type Property::BOOLEAN.
175 * @note Default is false.
180 * @brief Sets the speed of scrolling in pixels per second.
181 * @details Name "autoScrollSpeed", type Property::INT.
183 * @note Default in style sheet.
188 * @brief Number of complete loops when scrolling enabled.
189 * @details Name "autoScrollLoopCount", type Property::INT.
191 * @note Default in style sheet.
193 AUTO_SCROLL_LOOP_COUNT,
196 * @brief Gap before scrolling wraps.
197 * @details Name "autoScrollGap", type Property::INT.
199 * @note Default in style sheet but can be overridden to prevent same text being shown at start and end.
200 * @note Displayed gap size is not guaranteed if the text length plus gap exceeds the maximum texture size (i.e. GL_MAX_TEXTURE_SIZE).
205 * @brief The default extra space between lines in points.
206 * @details Name "lineSpacing", type Property::FLOAT.
212 * @brief The default underline parameters.
213 * @details Name "underline", type Property::MAP.
215 * The underline map contains the following keys:
217 * | %Property Name | Type | Required | Description |
218 * |----------------------|----------|----------|--------------------------------------------------------------------------------------------------------------------|
219 * | enable | BOOLEAN | No | True to enable the underline or false to disable (the default value is false) |
220 * | color | VECTOR4 | No | The color of the underline (the default value is Color::BLACK) |
221 * | height | FLOAT | No | The height of the underline (the default value is 0) |
228 * @brief The default shadow parameters.
229 * @details Name "shadow", type Property::MAP.
231 * The shadow map contains the following keys:
233 * | %Property Name | Type | Required | Description |
234 * |----------------------|----------|----------|--------------------------------------------------------------------------------------------------------------------|
235 * | color | VECTOR4 | No | The color of the shadow (the default value is Color::BLACK) |
236 * | offset | VECTOR2 | No | The offset from the text to draw the shadow in the X and Y axes (the default value is 0 which means no shadow) |
237 * | blurRadius | FLOAT | No | The radius of blur to be applied to the shadow (the default value is 0 which means no blur) |
244 * @brief The default emboss parameters.
245 * @details Name "emboss", type Property::MAP.
251 * @brief The default outline parameters.
252 * @details Name "outline", type Property::MAP.
254 * The outline map contains the following keys:
256 * | %Property Name | Type | Required | Description |
257 * |----------------------|----------|----------|--------------------------------------------------------------------------------------------------------------------|
258 * | color | VECTOR4 | No | The color of the outline (the default value is Color::WHITE) |
259 * | width | INTEGER | No | The width of the outline (the default value is 0 which means no outline) |
266 * @brief The size of font in pixels.
267 * @details Name "pixelSize", type Property::FLOAT.
268 * Conversion from Point size to Pixel size:
269 * Pixel size = Point size * DPI / 72
275 * @brief Whether we should show the ellipsis if required.
276 * @details Name "ellipsis", type Property::BOOLEAN.
282 * @brief The amount of time to delay the starting time of auto scrolling and further loops.
283 * @details Name "autoScrollLoopDelay", type Property::FLOAT.
286 AUTO_SCROLL_LOOP_DELAY,
289 * @brief The auto scrolling stop behaviour.
290 * @details Name "autoScrollStopMode", type AutoScrollStopMode::Type (Property::INTEGER) or Property::STRING.
292 * @note Default is AutoScrollStopMode::FINISH_LOOP.
293 * @see AutoScrollStopMode::Type
295 AUTO_SCROLL_STOP_MODE,
298 * @brief The line count of text.
299 * @details name "lineCount", type Property::INTEGER.
301 * @note This property is read-only.
306 * @brief Line wrap mode when text lines are greater than the layout width.
307 * @details Name "lineWrapMode", type Text::LineWrap::Mode (Text::Property::INTEGER) or Property::STRING.
309 * @note Default is Text::LineWrap::WORD.
310 * @note Return type is Text::LineWrap::Mode (Text::Property::INTEGER).
311 * @see Text::LineWrap
315 ///////////////////////////////////////////////////////////////////////////////
316 // Animatable Properties
317 ///////////////////////////////////////////////////////////////////////////////
320 * @brief The color of the text.
321 * @details Name "textColor", type Property::VECTOR4.
324 TEXT_COLOR = ANIMATABLE_PROPERTY_START_INDEX,
327 * @brief The red component of the text color.
328 * @details Name "textColorRed", type Property::FLOAT.
335 * @brief The green component of the text color.
336 * @details Name "textColorGreen", type Property::FLOAT.
343 * @brief The blue component of the text color.
344 * @details Name "textColorBlue", type Property::FLOAT.
351 * @brief The alpha component of the text color.
352 * @details Name "textColorAlpha", type Property::FLOAT.
361 * @brief The enumerations used for auto scroll stop mode.
363 * @see Property::AUTO_SCROLL_STOP_MODE.
365 struct AutoScrollStopMode
368 * @brief The enumerations used for auto scroll stop mode.
370 * @see Property::AUTO_SCROLL_STOP_MODE.
374 FINISH_LOOP = 0, ///< Stop animation after current loop finishes. @SINCE_1_2.60
375 IMMEDIATE ///< Stop animation immediately and reset position. @SINCE_1_2.60
380 * @brief Creates the TextLabel control.
383 * @return A handle to the TextLabel control
385 static TextLabel New();
388 * @brief Creates the TextLabel control.
391 * @param[in] text The text to display
392 * @return A handle to the TextLabel control
394 static TextLabel New( const std::string& text );
397 * @brief Creates an empty handle.
403 * @brief Copy constructor.
406 * @param[in] handle The handle to copy from
408 TextLabel( const TextLabel& handle );
411 * @brief Assignment operator.
414 * @param[in] handle The handle to copy from
415 * @return A reference to this
417 TextLabel& operator=( const TextLabel& handle );
422 * This is non-virtual since derived Handle types must not contain data or virtual methods.
428 * @brief Downcasts a handle to TextLabel.
430 * If the BaseHandle points is a TextLabel, the downcast returns a valid handle.
431 * If not, the returned handle is left empty.
434 * @param[in] handle Handle to an object
435 * @return Handle to a TextLabel or an empty handle
437 static TextLabel DownCast( BaseHandle handle );
439 public: // Not intended for application developers
443 * @brief Creates a handle using the Toolkit::Internal implementation.
446 * @param[in] implementation The Control implementation
448 DALI_INTERNAL TextLabel( Internal::TextLabel& implementation );
451 * @brief Allows the creation of this Control from an Internal::CustomActor pointer.
454 * @param[in] internal A pointer to the internal CustomActor
456 explicit DALI_INTERNAL TextLabel( Dali::Internal::CustomActor* internal );
463 } // namespace Toolkit
467 #endif // DALI_TOOLKIT_TEXT_LABEL_H