1 #ifndef __DALI_TOOLKIT_TEXT_INPUT_H__
2 #define __DALI_TOOLKIT_TEXT_INPUT_H__
5 * Copyright (c) 2014 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 * @addtogroup CAPI_DALI_TOOLKIT_TEXT_INPUT_MODULE
27 #include <dali-toolkit/public-api/controls/text-view/text-view.h>
29 namespace Dali DALI_IMPORT_API
35 namespace Internal DALI_INTERNAL
41 * @brief TextInput Actor takes input one character at a time and displays it as a string within an input box.
42 * Characters can be removed from the end of the string until it is empty. A maximum length of displayed string
45 class TextInput : public Control
52 static const Property::Index HIGHLIGHT_COLOR_PROPERTY; // Property, name "highlight-color", type VECTOR4
53 static const Property::Index CUT_AND_PASTE_COLOR_PROPERTY; // Property, name "cut-and-paste-bg-color", type VECTOR4
54 static const Property::Index CUT_AND_PASTE_PRESSED_COLOR_PROPERTY; // Property, name "cut-and-paste-pressed-color", type VECTOR4
56 static const Property::Index CUT_BUTTON_POSITION_PRIORITY_PROPERTY; // Property, name "cut-button-position-priority", type unsigned int
57 static const Property::Index COPY_BUTTON_POSITION_PRIORITY_PROPERTY; // Property, name "copy-button-position-priority", type unsigned int
58 static const Property::Index PASTE_BUTTON_POSITION_PRIORITY_PROPERTY; // Property, name "paste-button-position-priority", type unsigned int
59 static const Property::Index SELECT_BUTTON_POSITION_PRIORITY_PROPERTY; // Property, name "select-button-position-priority", type unsigned int
60 static const Property::Index SELECT_ALL_BUTTON_POSITION_PRIORITY_PROPERTY; // Property, name "select-all-button-position-priority", type unsigned int
61 static const Property::Index CLIPBOARD_BUTTON_POSITION_PRIORITY_PROPERTY; // Property, name "clipboard-button-position-priority", type unsigned int
63 static const Property::Index POP_UP_OFFSET_FROM_TEXT_PROPERTY; // Property, name "popup-offset-from-text", type VECTOR4
69 static const char* const SIGNAL_START_INPUT; ///< name "start-input"
70 static const char* const SIGNAL_END_INPUT; ///< name "end-input"
71 static const char* const SIGNAL_STYLE_CHANGED; ///< name "style-changed"
72 static const char* const SIGNAL_MAX_INPUT_CHARACTERS_REACHED; ///< name "max-input-characters-reached"
73 static const char* const SIGNAL_TOOLBAR_DISPLAYED; ///< name "toolbar-displayed"
74 static const char* const SIGNAL_TEXT_EXCEED_BOUNDARIES; ///< name "text-exceed-boundaries"
80 * @brief Create an uninitialized TextInput; this can be initialized with TextView::New().
82 * Calling member functions with an uninitialized Dali::Object is not allowed.
87 * @brief Copy constructor.
89 * @param handle to be copied
91 TextInput( const TextInput& handle );
94 * @brief Assignment operator.
96 * @param handle to object we want to point to
97 * @return handle to the TextInput
99 TextInput& operator=( const TextInput& handle );
102 * @brief Create an initialised TextInput.
104 * @return A handle to a newly allocated Dali resource.
106 static TextInput New();
109 * @brief Downcast an Object handle to TextInput.
111 * If handle points to a TextInput the downcast produces valid
112 * handle. If not the returned handle is left uninitialized.
114 * @param[in] handle Handle to an object
115 * @return handle to a TextInput or an uninitialized handle
117 static TextInput DownCast( BaseHandle handle );
120 * @brief Virtual destructor.
122 * Dali::Object derived classes typically do not contain member data.
124 virtual ~TextInput();
127 * @brief Get the inputed text currently being displayed.
129 * @return string, the currently displayed string.
131 std::string GetText() const;
134 * @brief Get the inputed text currently being displayed together with mark-up tags.
136 * @return string, the currently displayed string with mark-up.
138 std::string GetMarkupText() const;
141 * @brief Set the maximum number of characters for the Text Input.
143 * @param [in] maxChars the max number of characters
145 void SetMaxCharacterLength(std::size_t maxChars);
148 * @brief Limits the number of lines of text Text Input will display.
150 * @param [in] maxLines the max number of lines to display, must be greater than 0.
151 * Currently the only valid limit is 1. Which turns TextInput into Single line mode. Any number higher than 1 results in no limit.
153 void SetNumberOfLinesLimit(std::size_t maxLines);
156 * @brief Returns the limit of lines Text Input is allowed to display.
158 * @return max line number limit
160 std::size_t GetNumberOfLinesLimit() const;
163 * @brief Returns the number of characters TextInput is displaying.
165 * @return number of characters
167 std::size_t GetNumberOfCharacters() const;
170 * @brief Sets a place holder text to be displayed when the text-input is empty.
172 * If not set or set to an empty string then no place holder will be shown.
173 * @param [in] placeHolderText text to be used as place holder.
175 void SetPlaceholderText( const std::string& placeHolderText );
178 * @return the current set place holder text, empty string returned if not set.
180 std::string GetPlaceholderText();
183 * @brief set initial text to be displayed in text-input.
185 * Can be used to edit a pre-existing string.
186 * @param [in] initialText text to be initially displayed
188 void SetInitialText(const std::string& initialText);
191 * @brief Manual method to set the focus on the TextInput so it starts or stops edit state.
193 * @pre The text input actor has been initialised.
194 * @param[in] editMode true or false to indicate editMode on or off
196 void SetEditable(bool editMode);
199 * @see SetEditable(bool editMode).
201 * It sets the cursor in the closest character to the given touch point.
203 * @param[in] editMode true or false to indicate editMode on or off
204 * @param[in] touchPoint A position in actor coordinates within the text-input.
206 void SetEditable(bool editMode, const Vector2& touchPoint);
209 * @brief Check if TextInput is in edit state.
211 * @pre The text input actor has been initialised.
212 * @return True or False to indicate editMode on or off
214 bool IsEditable() const;
217 * @brief Method to enable or disable edit on touch/tap.
219 * If not enabled (set to false) then SetEditable(true) will be used to start edit mode.
220 * @pre The text input actor has been initialised.
221 * @param[in] editOnTouch true or false to indicate if editing should start on touch
222 * default is for editing to start on touching textinput
224 void SetEditOnTouch(bool editOnTouch = true);
227 * @brief Check if TextInput starts edit mode on touch.
229 * @pre The text input actor has been initialised.
230 * @return True or False to indicate editOnTouch on or off
232 bool IsEditOnTouch() const;
235 * @brief Check if Text Selection is enabled so required text can be highlighted.
237 * @pre The text input actor has been initialised.
238 * @param[in] textSelectable true or false to indicate if text can be selected or not
239 * default is for text to be select-able when in edit mode
241 void SetTextSelectable(bool textSelectable = true);
244 * @brief Check if Text can be selected.
246 * @pre The text input actor has been initialised.
247 * @return True or False to indicate if text can be selected or not
249 bool IsTextSelectable() const;
252 * @brief Check if any text is currently selected, can be used to determine if ApplyStyle or SetActiveStyle should be used.
254 * @pre The text input actor has been initialised.
255 * @return True if text selected else False
257 bool IsTextSelected() const;
260 * @brief Selects text between the given positions.
262 * @pre TextInput should be in edit mode.
263 * @param start position to start selection
264 * @param end position to end selection, inclusive of this character.
265 * Providing 0 and result from GetNumberOfCharacters() will select all text.
267 void SelectText(std::size_t start, std::size_t end);
270 * @brief If any text is selected then de-select it and hide highlight.
272 * @pre The text input actor has been initialised.
277 * @brief Set the image to be used as the cursor grab hander.
279 * @pre The text input actor has been initialised.
280 * @param[in] image The image to be used.
282 void SetGrabHandleImage( Image image );
285 * @brief Set the image to be used for the regular left to right cursor.
287 * @pre The text input actor has been initialised.
288 * @param[in] image The image to be used.
289 * @param[in] border The nine patch border for the image.
291 void SetCursorImage(Dali::Image image, const Vector4& border );
294 * @brief Retrieve the selection handle size.
296 * Both handles have same size.
297 * @return Vector3 the selection handle size.
299 Vector3 GetSelectionHandleSize();
302 * @brief Set the image to be used for the Right to Left cursor.
304 * @pre The text input actor has been initialised.
305 * @param[in] image The image to be used.
306 * @param[in] border The nine patch border for the image.
308 void SetRTLCursorImage(Dali::Image image, const Vector4& border );
311 * @brief Toggle to enable the grab handle, used to position cursor when magnifier not being used.
313 * Default behaviour is to use the magnifier to position the cursor, enabling this prevents the magnifier from being shown.
314 * @param[in] toggle true to enable, false to disable grab handle
316 void EnableGrabHandle(bool toggle);
319 * @brief Method to check if grab handle is enabled, if false then the magnifier will be used to position cursor.
321 * @return bool returns true is grab handle enabled.
323 bool IsGrabHandleEnabled();
326 * @brief Set the bounding rectangle which handles, popup and similar decorations will not exceed.
328 * The default value is the width and height of the stage from the top left origin.
329 * If a title bar for example is on the top of the screen then the y should be the title's height and
330 * the boundary height the stage height minus the title's height.
331 * Restrictions - The boundary box should be set up with a fixed z position for the text-input and the default camera.
332 * @param[in] boundingOriginAndSize Rect( x coordinate, y coordinate, width, height )
333 * ------------------------------------------
335 * |o---------------------------------------|
337 * || Bounding Box || boundary height
339 * |----------------------------------------|
340 * ------------------------------------------
343 void SetBoundingRectangle( const Rect<float>& boundingOriginAndSize );
346 * @brief Retrieve the bounding box origin and dimensions.
348 * default is set once control is added to stage, before this the return vector will be Vector4:ZERO
349 * @return Rect the bounding rectangle
351 const Rect<float> GetBoundingRectangle() const;
354 * @brief Sets the style for new text being typed.
356 * By default all style settings are applied but a bit mask could be used to modify only certain style settings.
357 * @pre The text input actor has been initialised.
358 * @param[in] style The style for the new text.
359 * @param[in] mask The bit mask.
361 void SetActiveStyle( const TextStyle& style, const TextStyle::Mask mask = TextStyle::ALL );
364 * @brief Applies the given style to the selected text.
366 * By default all style settings are applied but a bit mask could be used to modify only certain style settings.
367 * Introduced text after this call uses the new style.
368 * @param[in] style The given style.
369 * @param[in] mask The bit mask.
371 void ApplyStyle( const TextStyle& style, const TextStyle::Mask mask = TextStyle::ALL );
374 * @brief Applies the given style to all text, selected or not selected.
376 * By default all style settings are applied but a bit mask could be used to modify only certain style settings.
377 * @param[in] style The given style.
378 * @param[in] mask The bit mask.
380 void ApplyStyleToAll( const TextStyle& style, const TextStyle::Mask mask = TextStyle::ALL );
383 * @brief Get the style of the Text character before the cursor.
385 * If no character before then return the InputStyle.
386 * @return TextStyle, the style of the character before the cursor
388 TextStyle GetStyleAtCursor() const;
391 * @brief Set the current text alignment (overrides default setting).
393 * The default alignment is dependent on the current text in the text field.
394 * If the text begins using LTR characters (e.g. European text) then the
395 * alignment is HorizontalLeft. If the text begins using RTL characters
396 * (e.g. Hebrew/Arabic text) then the alignment is HorizontalRight.
397 * If there is no text, then the alignment defaults to:
398 * (HorizontalLeft | VerticalCenter)
399 * @param[in] align The new alignment option.
401 void SetTextAlignment( Toolkit::Alignment::Type align );
404 * @brief Set the current line justification. (overrides default setting).
406 * The default justification is dependent on the current text in the text field.
407 * If the text begins using LTR characters (e.g. European text) then the
408 * justification is HorizontalLeft. If the text begins using RTL characters
409 * (e.g. Hebrew/Arabic text) then the justification is HorizontalRight.
410 * If there is no text, then the justification defaults to:
411 * (HorizontalLeft | VerticalCenter)
412 * @param[in] justification The new line justification.
414 void SetTextLineJustification( Toolkit::TextView::LineJustification justification );
417 * @brief Sets a fade boundary.
419 * @see TextView::FadeBoundary.
421 * @param[in] fadeBoundary The given fade boundary.
423 void SetFadeBoundary( const Toolkit::TextView::FadeBoundary& fadeBoundary );
426 * @brief Retrieves the fade boundary.
428 * @see TextView::FadeBoundary.
430 * @return The fade boundary.
432 const Toolkit::TextView::FadeBoundary& GetFadeBoundary() const;
435 * @brief Get the current text alignment combined into a single value.
437 * The values can be tested by using the & operator
438 * and the desired flag. e.g. if (GetTextAlignment() & HorizontalCentre) ...
439 * @return The combined text alignment
441 Toolkit::Alignment::Type GetTextAlignment() const;
444 * @brief Sets how to split the text in lines policy.
446 * @param policy The multi-line policy.
448 void SetMultilinePolicy( Toolkit::TextView::MultilinePolicy policy );
451 * @brief Gets the split in lines policy.
453 * @return The multi-line policy.
455 Toolkit::TextView::MultilinePolicy GetMultilinePolicy() const;
458 * @brief Sets how to display the text inside the TextView when it exceeds the text-view's width.
460 * @param policy The exceed policy.
462 void SetWidthExceedPolicy( Toolkit::TextView::ExceedPolicy policy );
465 * @brief Gets the width exceed policy.
467 * @return The exceed policy.
469 TextView::ExceedPolicy GetWidthExceedPolicy() const;
472 * @brief Sets how to display the text inside the TextView when it exceeds the text-view's height.
474 * @param policy The exceed policy.
476 void SetHeightExceedPolicy( Toolkit::TextView::ExceedPolicy policy );
479 * @brief Gets the height exceed policy.
481 * @return The exceed policy.
483 TextView::ExceedPolicy GetHeightExceedPolicy() const;
486 * @brief Sets if the inputed text can exceed the text-input boundary.
488 * By default is enabled.
490 * @param[in] enable Whether the inputed text can exceed its boundary.
492 void SetExceedEnabled( bool enable );
495 * @brief Retrieves whether inputed text can exceed the text-input boundary.
497 * @return \e true if text inputed can exceed the boundary, otherwise \e false.
499 bool GetExceedEnabled() const;
502 * @brief Allows modification of text-actor's position in the depth sort algorithm.
504 * @see Dali::RenderableActor::SetSortModifier()
505 * @param [in] depthOffset the offset to be given to the internal text-actors. Positive values pushing it further back.
507 void SetSortModifier( float depthOffset );
510 * @brief Sets whether text-view renders text using a previously generated snapshot.
512 * @see TextView::SetSnapshotModeEnabled()
514 * @param[in] enable Whether text-view is using or not a snapshot to render text.
516 void SetSnapshotModeEnabled( bool enable );
519 * @brief Retrieves whether text-view is using a snapshot to render text.
521 * @see TextView::IsSnapshotModeEnabled()
523 * @return \e true if text-view is using a snapshot to render text, otherwhise it returns \e false.
525 bool IsSnapshotModeEnabled() const;
528 * @copydoc TextView::SetScrollEnabled()
530 void SetScrollEnabled( bool enable );
533 * @copydoc TextView::IsScrollEnabled()
535 bool IsScrollEnabled() const;
538 * @copydoc TextView::SetScrollPosition()
540 void SetScrollPosition( const Vector2& position );
543 * @copydoc TextView::GetScrollPosition()
545 Vector2 GetScrollPosition() const;
548 * @brief Sets whether markup processing should be carried out.
550 * @param[in] enable whether markup processing is carried out or not.
552 void SetMarkupProcessingEnabled( bool enable );
555 * @brief Returns whether markup processing is enabled or not
557 * @return true is markup processing is enabled
559 bool IsMarkupProcessingEnabled() const;
562 public: /* Signals */
564 /// @brief Input Signal.
565 typedef SignalV2< void ( TextInput textInput ) > InputSignalV2;
567 /// @brief Input style changed signal.
568 typedef SignalV2< void ( TextInput textInput, const TextStyle& style ) > StyleChangedSignalV2;
570 /// @brief Text modified signal.
571 typedef SignalV2< void ( TextInput textInput ) > TextModifiedSignalType;
573 /// @brief Max input characters reached signal.
574 typedef SignalV2< void ( TextInput textInput ) > MaxInputCharactersReachedSignalV2;
576 /// @brief Input text exceeds boundaries signal.
577 typedef SignalV2< void ( TextInput textInput ) > InputTextExceedBoundariesSignalV2;
580 * @brief Signal emitted when the Text-Input starts receiving input.
582 InputSignalV2& InputStartedSignal();
585 * @brief Signal emitted when the Text-Input is finished receiving input.
587 * TextInput::GetText() can be called to get current text string.
588 * @return The signal to connect to
590 InputSignalV2& InputFinishedSignal();
593 * @brief Signal emitted when the cut and paste toolbar is displayed.
595 * @return The signal to connect to
597 InputSignalV2& CutAndPasteToolBarDisplayedSignal();
600 * @brief Signal emitted when style changes.
602 * @return The signal to connect to
604 StyleChangedSignalV2& StyleChangedSignal();
607 * @brief Signal emitted when text changes.
609 * @return The signal to connect to.
611 TextModifiedSignalType& TextModifiedSignal();
614 * @brief Signal emitted when max input characters are reached during text input.
616 * @return The signal to connect to
618 MaxInputCharactersReachedSignalV2& MaxInputCharactersReachedSignal();
621 * @brief Signal emitted when input text exceeds the boundaries of the text-input.
623 * @return The signal to connect to
625 InputTextExceedBoundariesSignalV2& InputTextExceedBoundariesSignal();
627 public: // Not intended for application developers
630 * @brief Creates a handle using the Toolkit::Internal implementation.
632 * @param[in] implementation The Control implementation.
634 TextInput(Internal::TextInput& implementation);
637 * @brief Allows the creation of this Control from an Internal::CustomActor pointer.
639 * @param[in] internal A pointer to the internal CustomActor.
641 TextInput(Dali::Internal::CustomActor* internal );
644 } // namespace Toolkit
651 #endif // __DALI_TOOLKIT_TEXT_INPUT_H__