1 #ifndef DALI_TOOLKIT_TEXT_CONTROLLER_H
2 #define DALI_TOOLKIT_TEXT_CONTROLLER_H
5 * Copyright (c) 2017 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/devel-api/adaptor-framework/imf-manager.h>
23 #include <dali/public-api/events/gesture.h>
26 #include <dali-toolkit/public-api/text/text-enumerations.h>
27 #include <dali-toolkit/devel-api/controls/text-controls/text-selection-popup-callback-interface.h>
28 #include <dali-toolkit/devel-api/controls/text-controls/text-label-devel.h>
29 #include <dali-toolkit/devel-api/text/text-enumerations-devel.h>
30 #include <dali-toolkit/internal/text/decorator/text-decorator.h>
31 #include <dali-toolkit/internal/text/layouts/layout-engine.h>
32 #include <dali-toolkit/internal/text/hidden-text.h>
33 #include <dali-toolkit/internal/text/text-model-interface.h>
45 class ControlInterface;
46 class EditableControlInterface;
48 class RenderingController;
50 typedef IntrusivePtr<Controller> ControllerPtr;
53 * @brief A Text Controller is used by UI Controls which display text.
55 * It manipulates the Logical & Visual text models on behalf of the UI Controls.
56 * It provides a view of the text that can be used by rendering back-ends.
58 * For selectable/editable UI controls, the controller handles input events from the UI control
59 * and decorations (grab handles etc) via the Decorator::ControllerInterface interface.
61 * The text selection popup button callbacks are as well handled via the TextSelectionPopupCallbackInterface interface.
63 class Controller : public RefObject, public Decorator::ControllerInterface, public TextSelectionPopupCallbackInterface, public HiddenText::Observer
65 public: // Enumerated types.
68 * @brief Text related operations to be done in the relayout process.
72 NO_OPERATION = 0x0000,
73 CONVERT_TO_UTF32 = 0x0001,
75 VALIDATE_FONTS = 0x0004,
76 GET_LINE_BREAKS = 0x0008,
77 GET_WORD_BREAKS = 0x0010,
80 GET_GLYPH_METRICS = 0x0080,
82 UPDATE_LAYOUT_SIZE = 0x0200,
86 UPDATE_DIRECTION = 0x2000,
87 ALL_OPERATIONS = 0xFFFF
91 * @brief Used to distinguish between regular key events and IMF events
100 * @brief Used to specify whether to update the input style.
102 enum UpdateInputStyleType
105 DONT_UPDATE_INPUT_STYLE
109 * @brief Used to specify what has been updated after the Relayout() method has been called.
113 NONE_UPDATED = 0x0, ///< Nothing has been updated.
114 MODEL_UPDATED = 0x1, ///< The text's model has been updated.
115 DECORATOR_UPDATED = 0x2 ///< The decoration has been updated.
119 * @brief Different placeholder-text can be shown when the control is active/inactive.
123 PLACEHOLDER_TYPE_ACTIVE,
124 PLACEHOLDER_TYPE_INACTIVE,
128 * @brief Enumeration for Font Size Type.
132 POINT_SIZE, // The size of font in points.
133 PIXEL_SIZE // The size of font in pixels.
140 NO_ACTION, ///< Does no action if there is a tap on top of an area with no text.
141 HIGHLIGHT, ///< Highlights the nearest text (at the beginning or end of the text) and shows the text's selection popup.
142 SHOW_SELECTION_POPUP ///< Shows the text's selection popup.
146 public: // Constructor.
149 * @brief Create a new instance of a Controller.
151 * @return A pointer to a new Controller.
153 static ControllerPtr New();
156 * @brief Create a new instance of a Controller.
158 * @param[in] controlInterface The control's interface.
160 * @return A pointer to a new Controller.
162 static ControllerPtr New( ControlInterface* controlInterface );
165 * @brief Create a new instance of a Controller.
167 * @param[in] controlInterface The control's interface.
168 * @param[in] editableControlInterface The editable control's interface.
170 * @return A pointer to a new Controller.
172 static ControllerPtr New( ControlInterface* controlInterface,
173 EditableControlInterface* editableControlInterface );
175 public: // Configure the text controller.
178 * @brief Called to enable text input.
180 * @note Selectable or editable controls should call this once after Controller::New().
181 * @param[in] decorator Used to create cursor, selection handle decorations etc.
183 void EnableTextInput( DecoratorPtr decorator );
186 * @brief Used to switch between bitmap & vector based glyphs
188 * @param[in] glyphType The type of glyph; note that metrics for bitmap & vector based glyphs are different.
190 void SetGlyphType( TextAbstraction::GlyphType glyphType );
193 * @brief Enables/disables the mark-up processor.
195 * By default is disabled.
197 * @param[in] enable Whether to enable the mark-up processor.
199 void SetMarkupProcessorEnabled( bool enable );
202 * @brief Retrieves whether the mark-up processor is enabled.
204 * By default is disabled.
206 * @return @e true if the mark-up processor is enabled, otherwise returns @e false.
208 bool IsMarkupProcessorEnabled() const;
211 * @brief Enables/disables the auto text scrolling
213 * By default is disabled.
215 * @param[in] enable Whether to enable the auto scrolling
217 void SetAutoScrollEnabled( bool enable );
220 * @brief Retrieves whether auto text scrolling is enabled.
222 * By default is disabled.
224 * @return @e true if auto scrolling is enabled, otherwise returns @e false.
226 bool IsAutoScrollEnabled() const;
229 * @brief Get direction of the text from the first line of text,
230 * @return bool rtl (right to left) is true
232 CharacterDirection GetAutoScrollDirection() const;
235 * @brief Get the alignment offset of the first line of text.
237 * @return The alignment offset.
239 float GetAutoScrollLineAlignment() const;
242 * @brief Enables the horizontal scrolling.
244 * @param[in] enable Whether to enable the horizontal scrolling.
246 void SetHorizontalScrollEnabled( bool enable );
249 * @brief Retrieves whether the horizontal scrolling is enabled.
251 * @return @e true if the horizontal scrolling is enabled, otherwise it returns @e false.
253 bool IsHorizontalScrollEnabled() const;
256 * @brief Enables the vertical scrolling.
258 * @param[in] enable Whether to enable the vertical scrolling.
260 void SetVerticalScrollEnabled( bool enable );
263 * @brief Retrieves whether the verticall scrolling is enabled.
265 * @return @e true if the vertical scrolling is enabled, otherwise it returns @e false.
267 bool IsVerticalScrollEnabled() const;
270 * @brief Enables the smooth handle panning.
272 * @param[in] enable Whether to enable the smooth handle panning.
274 void SetSmoothHandlePanEnabled( bool enable );
277 * @brief Retrieves whether the smooth handle panning is enabled.
279 * @return @e true if the smooth handle panning is enabled.
281 bool IsSmoothHandlePanEnabled() const;
284 * @brief Sets the maximum number of characters that can be inserted into the TextModel
286 * @param[in] maxCharacters maximum number of characters to be accepted
288 void SetMaximumNumberOfCharacters( Length maxCharacters );
291 * @brief Sets the maximum number of characters that can be inserted into the TextModel
293 * @param[in] maxCharacters maximum number of characters to be accepted
295 int GetMaximumNumberOfCharacters();
298 * @brief Called to enable/disable cursor blink.
300 * @note Only editable controls should calls this.
301 * @param[in] enabled Whether the cursor should blink or not.
303 void SetEnableCursorBlink( bool enable );
306 * @brief Query whether cursor blink is enabled.
308 * @return Whether the cursor should blink or not.
310 bool GetEnableCursorBlink() const;
313 * @brief Whether to enable the multi-line layout.
315 * @param[in] enable \e true enables the multi-line (by default)
317 void SetMultiLineEnabled( bool enable );
320 * @return Whether the multi-line layout is enabled.
322 bool IsMultiLineEnabled() const;
325 * @brief Sets the text's horizontal alignment.
327 * @param[in] alignment The horizontal alignment.
329 void SetHorizontalAlignment( HorizontalAlignment::Type alignment );
332 * @copydoc ModelInterface::GetHorizontalAlignment()
334 HorizontalAlignment::Type GetHorizontalAlignment() const;
337 * @brief Sets the text's vertical alignment.
339 * @param[in] alignment The vertical alignment.
341 void SetVerticalAlignment( VerticalAlignment::Type alignment );
344 * @copydoc ModelInterface::GetVerticalAlignment()
346 VerticalAlignment::Type GetVerticalAlignment() const;
349 * @brief Sets the text's wrap mode
350 * @param[in] text wrap mode The unit of wrapping
352 void SetLineWrapMode( Text::LineWrap::Mode textWarpMode );
355 * @brief Retrieve text wrap mode previously set.
356 * @return text wrap mode
358 Text::LineWrap::Mode GetLineWrapMode() const;
361 * @brief Enable or disable the text elide.
363 * @param[in] enabled Whether to enable the text elide.
365 void SetTextElideEnabled( bool enabled );
368 * @copydoc ModelInterface::IsTextElideEnabled()
370 bool IsTextElideEnabled() const;
373 * @brief Enable or disable the placeholder text elide.
374 * @param enabled Whether to enable the placeholder text elide.
376 void SetPlaceholderTextElideEnabled( bool enabled );
379 * @brief Whether the placeholder text elide property is enabled.
380 * @return True if the placeholder text elide property is enabled, false otherwise.
382 bool IsPlaceholderTextElideEnabled() const;
385 * @brief Enable or disable the text selection.
386 * @param[in] enabled Whether to enable the text selection.
388 void SetSelectionEnabled( bool enabled );
391 * @brief Whether the text selection is enabled or not.
392 * @return True if the text selection is enabled
394 bool IsSelectionEnabled() const;
397 * @brief Sets input type to password
399 * @note The string is displayed hidden character
401 * @param[in] passwordInput True if password input is enabled.
403 void SetInputModePassword( bool passwordInput );
406 * @brief Returns whether the input mode type is set as password.
408 * @return True if input mode type is password
410 bool IsInputModePassword();
413 * @brief Sets the action when there is a double tap event on top of a text area with no text.
415 * @param[in] action The action to do.
417 void SetNoTextDoubleTapAction( NoTextTap::Action action );
420 * @brief Retrieves the action when there is a double tap event on top of a text area with no text.
422 * @return The action to do.
424 NoTextTap::Action GetNoTextDoubleTapAction() const;
427 * @briefSets the action when there is a long press event on top of a text area with no text.
429 * @param[in] action The action to do.
431 void SetNoTextLongPressAction( NoTextTap::Action action );
434 * @brief Retrieves the action when there is a long press event on top of a text area with no text.
436 * @return The action to do.
438 NoTextTap::Action GetNoTextLongPressAction() const;
441 * @brief Query if Underline settings were provided by string or map
442 * @return bool true if set by string
444 bool IsUnderlineSetByString();
447 * Set method underline setting were set by
448 * @param[in] bool, true if set by string
450 void UnderlineSetByString( bool setByString );
453 * @brief Query if shadow settings were provided by string or map
454 * @return bool true if set by string
456 bool IsShadowSetByString();
459 * Set method shadow setting were set by
460 * @param[in] bool, true if set by string
462 void ShadowSetByString( bool setByString );
465 * @brief Query if outline settings were provided by string or map
466 * @return bool true if set by string
468 bool IsOutlineSetByString();
471 * Set method outline setting were set by
472 * @param[in] bool, true if set by string
474 void OutlineSetByString( bool setByString );
477 * @brief Query if font style settings were provided by string or map
478 * @return bool true if set by string
480 bool IsFontStyleSetByString();
483 * Set method font style setting were set by
484 * @param[in] bool, true if set by string
486 void FontStyleSetByString( bool setByString );
491 * @brief Replaces any text previously set.
493 * @note This will be converted into UTF-32 when stored in the text model.
494 * @param[in] text A string of UTF-8 characters.
496 void SetText( const std::string& text );
499 * @brief Retrieve any text previously set.
501 * @param[out] text A string of UTF-8 characters.
503 void GetText( std::string& text ) const;
506 * @brief Replaces any placeholder text previously set.
508 * @param[in] type Different placeholder-text can be shown when the control is active/inactive.
509 * @param[in] text A string of UTF-8 characters.
511 void SetPlaceholderText( PlaceholderType type, const std::string& text );
514 * @brief Retrieve any placeholder text previously set.
516 * @param[in] type Different placeholder-text can be shown when the control is active/inactive.
517 * @param[out] A string of UTF-8 characters.
519 void GetPlaceholderText( PlaceholderType type, std::string& text ) const;
522 * @ brief Update the text after a font change
523 * @param[in] newDefaultFont The new font to change to
525 void UpdateAfterFontChange( const std::string& newDefaultFont );
527 public: // Default style & Input style
530 * @brief Set the default font family.
532 * @param[in] defaultFontFamily The default font family.
534 void SetDefaultFontFamily( const std::string& defaultFontFamily );
537 * @brief Retrieve the default font family.
539 * @return The default font family.
541 const std::string& GetDefaultFontFamily() const;
544 * @brief Sets the placeholder text font family.
545 * @param[in] placeholderTextFontFamily The placeholder text font family.
547 void SetPlaceholderFontFamily( const std::string& placeholderTextFontFamily );
550 * @brief Retrieves the placeholder text font family.
552 * @return The placeholder text font family
554 const std::string& GetPlaceholderFontFamily() const;
557 * @brief Sets the default font weight.
559 * @param[in] weight The font weight.
561 void SetDefaultFontWeight( FontWeight weight );
564 * @brief Whether the font's weight has been defined.
566 bool IsDefaultFontWeightDefined() const;
569 * @brief Retrieves the default font weight.
571 * @return The default font weight.
573 FontWeight GetDefaultFontWeight() const;
576 * @brief Sets the placeholder text font weight.
578 * @param[in] weight The font weight
580 void SetPlaceholderTextFontWeight( FontWeight weight );
583 * @brief Whether the font's weight has been defined.
585 * @return True if the placeholder text font weight is defined
587 bool IsPlaceholderTextFontWeightDefined() const;
590 * @brief Retrieves the placeholder text font weight.
592 * @return The placeholder text font weight
594 FontWeight GetPlaceholderTextFontWeight() const;
597 * @brief Sets the default font width.
599 * @param[in] width The font width.
601 void SetDefaultFontWidth( FontWidth width );
604 * @brief Whether the font's width has been defined.
606 bool IsDefaultFontWidthDefined() const;
609 * @brief Retrieves the default font width.
611 * @return The default font width.
613 FontWidth GetDefaultFontWidth() const;
616 * @brief Sets the placeholder text font width.
618 * @param[in] width The font width
620 void SetPlaceholderTextFontWidth( FontWidth width );
623 * @brief Whether the font's width has been defined.
625 * @return True if the placeholder text font width is defined
627 bool IsPlaceholderTextFontWidthDefined() const;
630 * @brief Retrieves the placeholder text font width.
632 * @return The placeholder text font width
634 FontWidth GetPlaceholderTextFontWidth() const;
637 * @brief Sets the default font slant.
639 * @param[in] slant The font slant.
641 void SetDefaultFontSlant( FontSlant slant );
644 * @brief Whether the font's slant has been defined.
646 bool IsDefaultFontSlantDefined() const;
649 * @brief Retrieves the default font slant.
651 * @return The default font slant.
653 FontSlant GetDefaultFontSlant() const;
656 * @brief Sets the placeholder text font slant.
658 * @param[in] slant The font slant
660 void SetPlaceholderTextFontSlant( FontSlant slant );
663 * @brief Whether the font's slant has been defined.
665 * @return True if the placeholder text font slant is defined
667 bool IsPlaceholderTextFontSlantDefined() const;
670 * @brief Retrieves the placeholder text font slant.
672 * @return The placeholder text font slant
674 FontSlant GetPlaceholderTextFontSlant() const;
677 * @brief Set the default font size.
679 * @param[in] fontSize The default font size
680 * @param[in] type The font size type is point size or pixel size
682 void SetDefaultFontSize( float fontSize, FontSizeType type );
685 * @brief Retrieve the default point size.
687 * @param[in] type The font size type
688 * @return The default point size.
690 float GetDefaultFontSize( FontSizeType type ) const;
693 * @brief Sets the Placeholder text font size.
694 * @param[in] fontSize The placeholder text font size
695 * @param[in] type The font size type is point size or pixel size
697 void SetPlaceholderTextFontSize( float fontSize, FontSizeType type );
700 * @brief Retrieves the Placeholder text font size.
701 * @param[in] type The font size type
702 * @return The placeholder font size
704 float GetPlaceholderTextFontSize( FontSizeType type ) const;
707 * @brief Sets the text's default color.
709 * @param color The default color.
711 void SetDefaultColor( const Vector4& color );
714 * @brief Retrieves the text's default color.
716 * @return The default color.
718 const Vector4& GetDefaultColor() const;
721 * @brief Set the text color
723 * @param textColor The text color
725 void SetPlaceholderTextColor( const Vector4& textColor );
728 * @brief Retrieve the text color
730 * @return The text color
732 const Vector4& GetPlaceholderTextColor() const;
735 * @brief Set the shadow offset.
737 * @param[in] shadowOffset The shadow offset, 0,0 indicates no shadow.
739 void SetShadowOffset( const Vector2& shadowOffset );
742 * @brief Retrieve the shadow offset.
744 * @return The shadow offset.
746 const Vector2& GetShadowOffset() const;
749 * @brief Set the shadow color.
751 * @param[in] shadowColor The shadow color.
753 void SetShadowColor( const Vector4& shadowColor );
756 * @brief Retrieve the shadow color.
758 * @return The shadow color.
760 const Vector4& GetShadowColor() const;
763 * @brief Set the shadow blur radius.
765 * @param[in] shadowBlurRadius The shadow blur radius, 0,0 indicates no blur.
767 void SetShadowBlurRadius( const float& shadowBlurRadius );
770 * @brief Retrieve the shadow blur radius.
772 * @return The shadow blur radius.
774 const float& GetShadowBlurRadius() const;
777 * @brief Set the underline color.
779 * @param[in] color color of underline.
781 void SetUnderlineColor( const Vector4& color );
784 * @brief Retrieve the underline color.
786 * @return The underline color.
788 const Vector4& GetUnderlineColor() const;
791 * @brief Set the underline enabled flag.
793 * @param[in] enabled The underline enabled flag.
795 void SetUnderlineEnabled( bool enabled );
798 * @brief Returns whether the text is underlined or not.
800 * @return The underline state.
802 bool IsUnderlineEnabled() const;
805 * @brief Set the override used for underline height, 0 indicates height will be supplied by font metrics
807 * @param[in] height The height in pixels of the underline
809 void SetUnderlineHeight( float height );
812 * @brief Retrieves the override height of an underline, 0 indicates height is supplied by font metrics
814 * @return The height of the underline, or 0 if height is not overrided.
816 float GetUnderlineHeight() const;
819 * @brief Set the outline color.
821 * @param[in] color color of outline.
823 void SetOutlineColor( const Vector4& color );
826 * @brief Retrieve the outline color.
828 * @return The outline color.
830 const Vector4& GetOutlineColor() const;
833 * @brief Set the outline width
835 * @param[in] width The width in pixels of the outline, 0 indicates no outline
837 void SetOutlineWidth( unsigned int width );
840 * @brief Retrieves the width of an outline
842 * @return The width of the outline.
844 unsigned int GetOutlineWidth() const;
847 * @brief Sets the emboss's properties string.
849 * @note The string is stored to be recovered.
851 * @param[in] embossProperties The emboss's properties string.
853 void SetDefaultEmbossProperties( const std::string& embossProperties );
856 * @brief Retrieves the emboss's properties string.
858 * @return The emboss's properties string.
860 const std::string& GetDefaultEmbossProperties() const;
863 * @brief Sets the outline's properties string.
865 * @note The string is stored to be recovered.
867 * @param[in] outlineProperties The outline's properties string.
869 void SetDefaultOutlineProperties( const std::string& outlineProperties );
872 * @brief Retrieves the outline's properties string.
874 * @return The outline's properties string.
876 const std::string& GetDefaultOutlineProperties() const;
879 * @brief Sets the default line spacing.
881 * @param[in] lineSpacing The line spacing.
883 void SetDefaultLineSpacing( float lineSpacing );
886 * @brief Retrieves the default line spacing.
888 * @return The line spacing.
890 float GetDefaultLineSpacing() const;
893 * @brief Sets the input text's color.
895 * @param[in] color The input text's color.
897 void SetInputColor( const Vector4& color );
900 * @brief Retrieves the input text's color.
902 * @return The input text's color.
904 const Vector4& GetInputColor() const;
907 * @brief Sets the input text's font family name.
909 * @param[in] fontFamily The text's font family name.
911 void SetInputFontFamily( const std::string& fontFamily );
914 * @brief Retrieves the input text's font family name.
916 * @return The input text's font family name.
918 const std::string& GetInputFontFamily() const;
921 * @brief Sets the input font's weight.
923 * @param[in] weight The input font's weight.
925 void SetInputFontWeight( FontWeight weight );
928 * @return Whether the font's weight has been defined.
930 bool IsInputFontWeightDefined() const;
933 * @brief Retrieves the input font's weight.
935 * @return The input font's weight.
937 FontWeight GetInputFontWeight() const;
940 * @brief Sets the input font's width.
942 * @param[in] width The input font's width.
944 void SetInputFontWidth( FontWidth width );
947 * @return Whether the font's width has been defined.
949 bool IsInputFontWidthDefined() const;
952 * @brief Retrieves the input font's width.
954 * @return The input font's width.
956 FontWidth GetInputFontWidth() const;
959 * @brief Sets the input font's slant.
961 * @param[in] slant The input font's slant.
963 void SetInputFontSlant( FontSlant slant );
966 * @return Whether the font's slant has been defined.
968 bool IsInputFontSlantDefined() const;
971 * @brief Retrieves the input font's slant.
973 * @return The input font's slant.
975 FontSlant GetInputFontSlant() const;
978 * @brief Sets the input font's point size.
980 * @param[in] size The input font's point size.
982 void SetInputFontPointSize( float size );
985 * @brief Retrieves the input font's point size.
987 * @return The input font's point size.
989 float GetInputFontPointSize() const;
992 * @brief Sets the input line spacing.
994 * @param[in] lineSpacing The line spacing.
996 void SetInputLineSpacing( float lineSpacing );
999 * @brief Retrieves the input line spacing.
1001 * @return The line spacing.
1003 float GetInputLineSpacing() const;
1006 * @brief Sets the input shadow's properties string.
1008 * @note The string is stored to be recovered.
1010 * @param[in] shadowProperties The shadow's properties string.
1012 void SetInputShadowProperties( const std::string& shadowProperties );
1015 * @brief Retrieves the input shadow's properties string.
1017 * @return The shadow's properties string.
1019 const std::string& GetInputShadowProperties() const;
1022 * @brief Sets the input underline's properties string.
1024 * @note The string is stored to be recovered.
1026 * @param[in] underlineProperties The underline's properties string.
1028 void SetInputUnderlineProperties( const std::string& underlineProperties );
1031 * @brief Retrieves the input underline's properties string.
1033 * @return The underline's properties string.
1035 const std::string& GetInputUnderlineProperties() const;
1038 * @brief Sets the input emboss's properties string.
1040 * @note The string is stored to be recovered.
1042 * @param[in] embossProperties The emboss's properties string.
1044 void SetInputEmbossProperties( const std::string& embossProperties );
1047 * @brief Retrieves the input emboss's properties string.
1049 * @return The emboss's properties string.
1051 const std::string& GetInputEmbossProperties() const;
1054 * @brief Sets input the outline's properties string.
1056 * @note The string is stored to be recovered.
1058 * @param[in] outlineProperties The outline's properties string.
1060 void SetInputOutlineProperties( const std::string& outlineProperties );
1063 * @brief Retrieves the input outline's properties string.
1065 * @return The outline's properties string.
1067 const std::string& GetInputOutlineProperties() const;
1070 * @brief Set the control's interface.
1072 * @param[in] controlInterface The control's interface.
1074 void SetControlInterface( ControlInterface* controlInterface );
1076 public: // Queries & retrieves.
1079 * @brief Return the layout engine.
1081 * @return A reference to the layout engine.
1083 Layout::Engine& GetLayoutEngine();
1086 * @brief Return a view of the text.
1088 * @return A reference to the view.
1093 * @copydoc Control::GetNaturalSize()
1095 Vector3 GetNaturalSize();
1098 * @copydoc Control::GetHeightForWidth()
1100 float GetHeightForWidth( float width );
1103 * @brief Retrieves the text's number of lines for a given width.
1104 * @param[in] width The width of the text's area.
1105 * @ return The number of lines.
1107 int GetLineCount( float width );
1110 * @brief Retrieves the text's model.
1112 * @return A pointer to the text's model.
1114 const ModelInterface* const GetTextModel() const;
1117 * @brief Used to get scrolled distance by user input
1119 * @return Distance from last scroll offset to new scroll offset
1121 float GetScrollAmountByUserInput();
1124 * @brief Get latest scroll amount, control size and layout size
1126 * This method is used to get information of control's scroll
1127 * @param[out] scrollPosition The current scrolled position
1128 * @param[out] controlHeight The size of a UI control
1129 * @param[out] layoutHeight The size of a bounding box to layout text within.
1131 * @return Whether the text scroll position is changed or not after last update.
1133 bool GetTextScrollInfo( float& scrollPosition, float& controlHeight, float& layoutHeight );
1136 * @brief Used to set the hidden input option
1138 void SetHiddenInputOption( const Property::Map& options );
1141 * @brief Used to get the hidden input option
1143 void GetHiddenInputOption( Property::Map& options );
1146 * @brief Sets the Placeholder Properties.
1148 * @param[in] map The placeholder property map
1150 void SetPlaceholderProperty( const Property::Map& map );
1153 * @brief Retrieves the Placeholder Property map.
1155 * @param[out] map The property map
1157 void GetPlaceholderProperty( Property::Map& map );
1160 * @brief Checks text direction.
1161 * @return The text direction.
1163 Toolkit::DevelText::TextDirection::Type GetTextDirection();
1165 public: // Relayout.
1168 * @brief Triggers a relayout which updates View (if necessary).
1170 * @note UI Controls are expected to minimize calls to this method e.g. call once after size negotiation.
1171 * @param[in] size A the size of a bounding box to layout text within.
1173 * @return Whether the text model or decorations were updated.
1175 UpdateTextType Relayout( const Size& size );
1178 * @brief Request a relayout using the ControlInterface.
1180 void RequestRelayout();
1182 public: // Input style change signals.
1185 * @return Whether the queue of input style changed signals is empty.
1187 bool IsInputStyleChangedSignalsQueueEmpty();
1190 * @brief Process all pending input style changed signals.
1192 * Calls the Text::ControlInterface::InputStyleChanged() method which is overriden by the
1193 * text controls. Text controls may send signals to state the input style has changed.
1195 void ProcessInputStyleChangedSignals();
1197 public: // Text-input Event Queuing.
1200 * @brief Called by editable UI controls when keyboard focus is gained.
1202 void KeyboardFocusGainEvent();
1205 * @brief Called by editable UI controls when focus is lost.
1207 void KeyboardFocusLostEvent();
1210 * @brief Called by editable UI controls when key events are received.
1212 * @param[in] event The key event.
1213 * @param[in] type Used to distinguish between regular key events and IMF events.
1215 bool KeyEvent( const Dali::KeyEvent& event );
1218 * @brief Called by editable UI controls when a tap gesture occurs.
1219 * @param[in] tapCount The number of taps.
1220 * @param[in] x The x position relative to the top-left of the parent control.
1221 * @param[in] y The y position relative to the top-left of the parent control.
1223 void TapEvent( unsigned int tapCount, float x, float y );
1226 * @brief Called by editable UI controls when a pan gesture occurs.
1228 * @param[in] state The state of the gesture.
1229 * @param[in] displacement This distance panned since the last pan gesture.
1231 void PanEvent( Gesture::State state, const Vector2& displacement );
1234 * @brief Called by editable UI controls when a long press gesture occurs.
1236 * @param[in] state The state of the gesture.
1237 * @param[in] x The x position relative to the top-left of the parent control.
1238 * @param[in] y The y position relative to the top-left of the parent control.
1240 void LongPressEvent( Gesture::State state, float x, float y );
1243 * @brief Event received from IMF manager
1245 * @param[in] imfManager The IMF manager.
1246 * @param[in] imfEvent The event received.
1247 * @return A data struture indicating if update is needed, cursor position and current text.
1249 ImfManager::ImfCallbackData OnImfEvent( ImfManager& imfManager, const ImfManager::ImfEventData& imfEvent );
1252 * @brief Event from Clipboard notifying an Item has been selected for pasting
1254 void PasteClipboardItemEvent();
1257 * @brief Return true when text control should clear key input focus when escape key is pressed.
1259 * @return Whether text control should clear key input focus or not when escape key is pressed.
1261 bool ShouldClearFocusOnEscape() const;
1263 protected: // Inherit from Text::Decorator::ControllerInterface.
1266 * @copydoc Dali::Toolkit::Text::Decorator::ControllerInterface::GetTargetSize()
1268 virtual void GetTargetSize( Vector2& targetSize );
1271 * @copydoc Dali::Toolkit::Text::Decorator::ControllerInterface::AddDecoration()
1273 virtual void AddDecoration( Actor& actor, bool needsClipping );
1276 * @copydoc Dali::Toolkit::Text::Decorator::ControllerInterface::DecorationEvent()
1278 virtual void DecorationEvent( HandleType handle, HandleState state, float x, float y );
1280 protected: // Inherit from TextSelectionPopup::TextPopupButtonCallbackInterface.
1283 * @copydoc Dali::Toolkit::TextSelectionPopup::TextPopupButtonCallbackInterface::TextPopupButtonTouched()
1285 virtual void TextPopupButtonTouched( Dali::Toolkit::TextSelectionPopup::Buttons button );
1287 protected: // Inherit from HiddenText.
1290 * @brief Invoked from HiddenText when showing time of the last character was expired
1292 virtual void DisplayTimeExpired();
1297 * @brief Called by editable UI controls when key events are received.
1299 * @param[in] text The text to insert.
1300 * @param[in] type Used to distinguish between regular key events and IMF events.
1302 void InsertText( const std::string& text, InsertType type );
1305 * @brief Paste given string into Text model
1306 * @param[in] stringToPaste this string will be inserted into the text model
1308 void PasteText( const std::string& stringToPaste );
1311 * @brief Remove a given number of characters
1313 * When predictve text is used the pre-edit text is removed and inserted again with the new characters.
1314 * The UpdateInputStyleType @type parameter if set to DONT_UPDATE_INPUT_STYLE avoids to update the input
1315 * style when pre-edit text is removed.
1317 * @param[in] cursorOffset Start position from the current cursor position to start deleting characters.
1318 * @param[in] numberOfCharacters The number of characters to delete from the cursorOffset.
1319 * @param[in] type Whether to update the input style.
1320 * @return True if the remove was successful.
1322 bool RemoveText( int cursorOffset,
1323 int numberOfCharacters,
1324 UpdateInputStyleType type );
1327 * @brief Checks if text is selected and if so removes it.
1328 * @return true if text was removed
1330 bool RemoveSelectedText();
1332 private: // Relayout.
1335 * @brief Lays-out the text.
1337 * GetNaturalSize(), GetHeightForWidth() and Relayout() calls this method.
1339 * @param[in] size A the size of a bounding box to layout text within.
1340 * @param[in] operations The layout operations which need to be done.
1341 * @param[out] layoutSize The size of the laid-out text.
1343 bool DoRelayout( const Size& size,
1344 OperationsMask operations,
1348 * @brief Calulates the vertical offset to align the text inside the bounding box.
1350 * @param[in] size The size of the bounding box.
1352 void CalculateVerticalOffset( const Size& size );
1357 * @brief Process queued events which modify the model.
1359 void ProcessModifyEvents();
1362 * @brief Used to process an event queued from SetText()
1364 void TextReplacedEvent();
1367 * @brief Used to process an event queued from key events etc.
1369 void TextInsertedEvent();
1372 * @brief Used to process an event queued from backspace key etc.
1374 void TextDeletedEvent();
1377 * @brief Creates a selection event.
1379 * It could be called from the TapEvent (double tap) or when the text selection popup's sellect all button is pressed.
1381 * @param[in] x The x position relative to the top-left of the parent control.
1382 * @param[in] y The y position relative to the top-left of the parent control.
1383 * @param[in] selectAll Whether the whole text is selected.
1385 void SelectEvent( float x, float y, bool selectAll );
1388 * @brief Helper to KeyEvent() to handle the backspace or delete key case.
1390 * @param[in] keyCode The keycode for the key pressed
1391 * @return True if a character was deleted.
1393 bool DeleteEvent( int keyCode );
1395 private: // Helpers.
1398 * @brief Used to remove the text included the placeholder text.
1403 * @brief Helper to show the place holder text..
1405 void ShowPlaceholderText();
1408 * @brief Helper to clear font-specific data (only).
1410 void ClearFontData();
1413 * @brief Helper to clear text's style data.
1415 void ClearStyleData();
1418 * @brief Used to reset the cursor position after setting a new text.
1420 * @param[in] cursorIndex Where to place the cursor.
1422 void ResetCursorPosition( CharacterIndex cursorIndex );
1425 * @brief Used to reset the scroll position after setting a new text.
1427 void ResetScrollPosition();
1429 private: // Private contructors & copy operator.
1432 * @brief Private constructor.
1437 * @brief Private constructor.
1439 Controller( ControlInterface* controlInterface );
1442 * @brief Private constructor.
1444 Controller( ControlInterface* controlInterface,
1445 EditableControlInterface* editableControlInterface );
1448 Controller( const Controller& handle );
1451 Controller& operator=( const Controller& handle );
1453 protected: // Destructor.
1456 * @brief A reference counted object may only be deleted by calling Unreference().
1458 virtual ~Controller();
1468 } // namespace Toolkit
1472 #endif // DALI_TOOLKIT_TEXT_CONTROLLER_H