1 #ifndef DALI_TOOLKIT_TEXT_CONTROLLER_IMPL_H
2 #define DALI_TOOLKIT_TEXT_CONTROLLER_IMPL_H
5 * Copyright (c) 2023 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/text-abstraction/font-client.h>
23 #include <dali/public-api/rendering/shader.h>
26 #include <dali-toolkit/devel-api/styling/style-manager-devel.h>
27 #include <dali-toolkit/internal/text/controller/text-controller.h>
28 #include <dali-toolkit/internal/text/input-style.h>
29 #include <dali-toolkit/internal/text/text-model.h>
30 #include <dali-toolkit/internal/text/text-view.h>
31 #include <dali-toolkit/public-api/styling/style-manager.h>
39 const float DEFAULT_TEXTFIT_MIN = 10.f;
40 const float DEFAULT_TEXTFIT_MAX = 100.f;
41 const float DEFAULT_TEXTFIT_STEP = 1.f;
42 const float DEFAULT_FONT_SIZE_SCALE = 1.f;
43 const float DEFAULT_DISABLED_COLOR_OPACITY = 0.3f;
45 //Forward declarations
48 struct ControllerImplEventHandler;
49 struct ControllerImplModelUpdater;
50 struct SelectionHandleController;
52 class SelectableControlInterface;
53 class AnchorControlInterface;
57 // Used to queue input events until DoRelayout()
65 LEFT_SELECTION_HANDLE_EVENT,
66 RIGHT_SELECTION_HANDLE_EVENT,
104 EDITING_WITH_GRAB_HANDLE,
105 EDITING_WITH_PASTE_POPUP,
107 SELECTION_HANDLE_PANNING,
111 EventData(DecoratorPtr decorator, InputMethodContext& inputMethodContext);
113 ~EventData() = default;
115 static bool IsEditingState(State stateToCheck)
117 return (stateToCheck == EDITING || stateToCheck == EDITING_WITH_POPUP || stateToCheck == EDITING_WITH_GRAB_HANDLE || stateToCheck == EDITING_WITH_PASTE_POPUP);
120 DecoratorPtr mDecorator; ///< Pointer to the decorator.
121 InputMethodContext mInputMethodContext; ///< The Input Method Framework Manager.
122 std::unique_ptr<FontDefaults> mPlaceholderFont; ///< The placeholder default font.
123 std::string mPlaceholderTextActive; ///< The text to display when the TextField is empty with key-input focus.
124 std::string mPlaceholderTextInactive; ///< The text to display when the TextField is empty and inactive.
125 Vector4 mPlaceholderTextColor; ///< The in/active placeholder text color.
128 * This is used to delay handling events until after the model has been updated.
129 * The number of updates to the model is minimized to improve performance.
131 std::vector<Event> mEventQueue; ///< The queue of touch events etc.
133 Vector<InputStyle::Mask> mInputStyleChangedQueue; ///< Queue of changes in the input style. Used to emit the signal in the iddle callback.
135 InputStyle mInputStyle; ///< The style to be set to the new inputed text.
137 State mPreviousState; ///< Stores the current state before it's updated with the new one.
138 State mState; ///< Selection mode, edit mode etc.
140 CharacterIndex mPrimaryCursorPosition; ///< Index into logical model for primary cursor.
141 CharacterIndex mLeftSelectionPosition; ///< Index into logical model for left selection handle.
142 CharacterIndex mRightSelectionPosition; ///< Index into logical model for right selection handle.
144 CharacterIndex mPreEditStartPosition; ///< Used to remove the pre-edit text if necessary.
145 Length mPreEditLength; ///< Used to remove the pre-edit text if necessary.
147 float mCursorHookPositionX; ///< Used to move the cursor with the keys or when scrolling the text vertically with the handles.
149 Controller::NoTextTap::Action mDoubleTapAction; ///< Action to be done when there is a double tap on top of 'no text'
150 Controller::NoTextTap::Action mLongPressAction; ///< Action to be done when there is a long press on top of 'no text'
152 bool mIsShowingPlaceholderText : 1; ///< True if the place-holder text is being displayed.
153 bool mPreEditFlag : 1; ///< True if the model contains text in pre-edit state.
154 bool mDecoratorUpdated : 1; ///< True if the decorator was updated during event processing.
155 bool mCursorBlinkEnabled : 1; ///< True if cursor should blink when active.
156 bool mGrabHandleEnabled : 1; ///< True if grab handle is enabled.
157 bool mGrabHandlePopupEnabled : 1; ///< True if the grab handle popu-up should be shown.
158 bool mSelectionEnabled : 1; ///< True if selection handles, highlight etc. are enabled.
159 bool mUpdateCursorHookPosition : 1; ///< True if the cursor hook position must be updated. Used to move the cursor with the keys 'up' and 'down'.
160 bool mUpdateCursorPosition : 1; ///< True if the visual position of the cursor must be recalculated.
161 bool mUpdateGrabHandlePosition : 1; ///< True if the visual position of the grab handle must be recalculated.
162 bool mUpdateLeftSelectionPosition : 1; ///< True if the visual position of the left selection handle must be recalculated.
163 bool mUpdateRightSelectionPosition : 1; ///< True if the visual position of the right selection handle must be recalculated.
164 bool mIsLeftHandleSelected : 1; ///< Whether is the left handle the one which is selected.
165 bool mIsRightHandleSelected : 1; ///< Whether is the right handle the one which is selected.
166 bool mUpdateHighlightBox : 1; ///< True if the text selection high light box must be updated.
167 bool mScrollAfterUpdatePosition : 1; ///< Whether to scroll after the cursor position is updated.
168 bool mScrollAfterDelete : 1; ///< Whether to scroll after delete characters.
169 bool mAllTextSelected : 1; ///< True if the selection handles are selecting all the text.
170 bool mUpdateInputStyle : 1; ///< Whether to update the input style after moving the cursor.
171 bool mPasswordInput : 1; ///< True if password input is enabled.
172 bool mCheckScrollAmount : 1; ///< Whether to check scrolled amount after updating the position
173 bool mIsPlaceholderPixelSize : 1; ///< True if the placeholder font size is set as pixel size.
174 bool mIsPlaceholderElideEnabled : 1; ///< True if the placeholder text's elide is enabled.
175 bool mPlaceholderEllipsisFlag : 1; ///< True if the text controller sets the placeholder ellipsis.
176 bool mShiftSelectionFlag : 1; ///< True if the text selection using Shift key is enabled.
177 bool mUpdateAlignment : 1; ///< True if the whole text needs to be full aligned..
178 bool mEditingEnabled : 1; ///< True if the editing is enabled, false otherwise.
185 TEXT_REPLACED, ///< The entire text was replaced
186 TEXT_INSERTED, ///< Insert characters at the current cursor position
187 TEXT_DELETED ///< Characters were deleted
196 : mFontDescription(),
197 mDefaultPointSize(0.f),
200 familyDefined(false),
201 weightDefined(false),
206 // Initially use the default platform font
207 TextAbstraction::FontClient fontClient = TextAbstraction::FontClient::Get();
208 fontClient.GetDefaultPlatformFontDescription(mFontDescription);
211 FontId GetFontId(TextAbstraction::FontClient& fontClient, float fontPointSize)
215 const PointSize26Dot6 pointSize = static_cast<PointSize26Dot6>(fontPointSize * 64.f);
216 mFontId = fontClient.GetFontId(mFontDescription, pointSize);
222 TextAbstraction::FontDescription mFontDescription; ///< The default font's description.
223 float mDefaultPointSize; ///< The default font's point size.
224 float mFitPointSize; ///< The fit font's point size.
225 FontId mFontId; ///< The font's id of the default font.
226 bool familyDefined : 1; ///< Whether the default font's family name is defined.
227 bool weightDefined : 1; ///< Whether the default font's weight is defined.
228 bool widthDefined : 1; ///< Whether the default font's width is defined.
229 bool slantDefined : 1; ///< Whether the default font's slant is defined.
230 bool sizeDefined : 1; ///< Whether the default font's point size is defined.
234 * @brief Stores indices used to update the text.
235 * Stores the character index where the text is updated and the number of characters removed and added.
236 * Stores as well indices to the first and the last paragraphs to be updated.
238 struct TextUpdateInfo
241 : mCharacterIndex(0u),
242 mNumberOfCharactersToRemove(0u),
243 mNumberOfCharactersToAdd(0u),
244 mPreviousNumberOfCharacters(0u),
245 mParagraphCharacterIndex(0u),
246 mRequestedNumberOfCharacters(0u),
247 mStartGlyphIndex(0u),
249 mEstimatedNumberOfLines(0u),
251 mFullRelayoutNeeded(true),
252 mIsLastCharacterNewParagraph(false)
260 CharacterIndex mCharacterIndex; ///< Index to the first character to be updated.
261 Length mNumberOfCharactersToRemove; ///< The number of characters to be removed.
262 Length mNumberOfCharactersToAdd; ///< The number of characters to be added.
263 Length mPreviousNumberOfCharacters; ///< The number of characters before the text update.
265 CharacterIndex mParagraphCharacterIndex; ///< Index of the first character of the first paragraph to be updated.
266 Length mRequestedNumberOfCharacters; ///< The requested number of characters.
267 GlyphIndex mStartGlyphIndex;
268 LineIndex mStartLineIndex;
269 Length mEstimatedNumberOfLines; ///< The estimated number of lines. Used to avoid reallocations when layouting.
271 bool mClearAll : 1; ///< Whether the whole text is cleared. i.e. when the text is reset.
272 bool mFullRelayoutNeeded : 1; ///< Whether a full re-layout is needed. i.e. when a new size is set to the text control.
273 bool mIsLastCharacterNewParagraph : 1; ///< Whether the last character is a new paragraph character.
277 // Clear all info except the mPreviousNumberOfCharacters member.
278 mCharacterIndex = static_cast<CharacterIndex>(-1);
279 mNumberOfCharactersToRemove = 0u;
280 mNumberOfCharactersToAdd = 0u;
281 mParagraphCharacterIndex = 0u;
282 mRequestedNumberOfCharacters = 0u;
283 mStartGlyphIndex = 0u;
284 mStartLineIndex = 0u;
285 mEstimatedNumberOfLines = 0u;
287 mFullRelayoutNeeded = false;
288 mIsLastCharacterNewParagraph = false;
292 struct UnderlineDefaults
294 std::string properties;
295 // TODO: complete with underline parameters.
298 struct ShadowDefaults
300 std::string properties;
301 // TODO: complete with shadow parameters.
304 struct EmbossDefaults
306 std::string properties;
307 // TODO: complete with emboss parameters.
310 struct OutlineDefaults
312 std::string properties;
313 // TODO: complete with outline parameters.
316 struct Controller::Impl
318 Impl(ControlInterface* controlInterface,
319 EditableControlInterface* editableControlInterface,
320 SelectableControlInterface* selectableControlInterface,
321 AnchorControlInterface* anchorControlInterface)
322 : mControlInterface(controlInterface),
323 mEditableControlInterface(editableControlInterface),
324 mSelectableControlInterface(selectableControlInterface),
325 mAnchorControlInterface(anchorControlInterface),
328 mUnderlineDefaults(NULL),
329 mShadowDefaults(NULL),
330 mEmbossDefaults(NULL),
331 mOutlineDefaults(NULL),
338 mTextColor(Color::BLACK),
340 mOperationsPending(NO_OPERATION),
341 mMaximumNumberOfCharacters(50u),
343 mInputFilter(nullptr),
344 mTextFitContentSize(),
346 mRecalculateNaturalSize(true),
347 mMarkupProcessorEnabled(false),
348 mClipboardHideEnabled(true),
349 mIsAutoScrollEnabled(false),
350 mIsAutoScrollMaxTextureExceeded(false),
351 mUpdateTextDirection(true),
352 mIsTextDirectionRTL(false),
353 mUnderlineSetByString(false),
354 mShadowSetByString(false),
355 mOutlineSetByString(false),
356 mFontStyleSetByString(false),
357 mStrikethroughSetByString(false),
358 mShouldClearFocusOnEscape(true),
359 mLayoutDirection(LayoutDirection::LEFT_TO_RIGHT),
360 mCurrentLineSize(0.f),
361 mTextFitMinSize(DEFAULT_TEXTFIT_MIN),
362 mTextFitMaxSize(DEFAULT_TEXTFIT_MAX),
363 mTextFitStepSize(DEFAULT_TEXTFIT_STEP),
364 mTextFitLineSize(0.f),
365 mFontSizeScale(DEFAULT_FONT_SIZE_SCALE),
366 mDisabledColorOpacity(DEFAULT_DISABLED_COLOR_OPACITY),
367 mFontSizeScaleEnabled(true),
368 mTextFitEnabled(false),
369 mTextFitChanged(false),
370 mTextFitArrayEnabled(false),
371 mIsLayoutDirectionChanged(false),
372 mIsUserInteractionEnabled(true)
374 mModel = Model::New();
376 mFontClient = TextAbstraction::FontClient::Get();
377 if(mEditableControlInterface != nullptr && Clipboard::IsAvailable())
379 mClipboard = Clipboard::Get();
382 mView.SetVisualModel(mModel->mVisualModel);
383 mView.SetLogicalModel(mModel->mLogicalModel);
385 // Use this to access FontClient i.e. to get down-scaled Emoji metrics.
386 mMetrics = Metrics::New(mFontClient);
387 mLayoutEngine.SetMetrics(mMetrics);
389 // Set the text properties to default
390 mModel->mVisualModel->SetUnderlineEnabled(false);
391 mModel->mVisualModel->SetUnderlineHeight(0.0f);
393 Toolkit::StyleManager styleManager = Toolkit::StyleManager::Get();
396 const auto clearFocusOnEscapeValue = Toolkit::DevelStyleManager::GetConfigurations(styleManager).Find("clearFocusOnEscape", Property::Type::BOOLEAN);
398 // Default is true. If config don't have "clearFocusOnEscape" property, make it true.
399 mShouldClearFocusOnEscape = (!clearFocusOnEscapeValue || clearFocusOnEscapeValue->Get<bool>());
406 delete mFontDefaults;
407 delete mUnderlineDefaults;
408 delete mShadowDefaults;
409 delete mEmbossDefaults;
410 delete mOutlineDefaults;
414 // Text Controller Implementation.
417 * @copydoc Text::Controller::RequestRelayout()
419 void RequestRelayout();
422 * @brief Request a relayout using the ControlInterface.
424 void QueueModifyEvent(ModifyEvent::Type type)
426 if(ModifyEvent::TEXT_REPLACED == type)
428 // Cancel previously queued inserts etc.
429 mModifyEvents.Clear();
434 mModifyEvents.PushBack(event);
436 // The event will be processed during relayout
441 * @brief Helper to move the cursor, grab handle etc.
443 bool ProcessInputEvents();
446 * @brief Helper to check whether any place-holder text is available.
448 bool IsPlaceholderAvailable() const
450 return (mEventData &&
451 (!mEventData->mPlaceholderTextInactive.empty() ||
452 !mEventData->mPlaceholderTextActive.empty()));
455 bool IsShowingPlaceholderText() const
457 return (mEventData && mEventData->mIsShowingPlaceholderText);
461 * @brief Helper to check whether active place-holder text is available.
463 bool IsFocusedPlaceholderAvailable() const
465 return (mEventData && !mEventData->mPlaceholderTextActive.empty());
468 bool IsShowingRealText() const
470 return (!IsShowingPlaceholderText() &&
471 0u != mModel->mLogicalModel->mText.Count());
475 * @brief Called when placeholder-text is hidden
477 void PlaceholderCleared()
481 mEventData->mIsShowingPlaceholderText = false;
483 // Remove mPlaceholderTextColor
484 mModel->mVisualModel->SetTextColor(mTextColor);
488 void ClearPreEditFlag()
492 mEventData->mPreEditFlag = false;
493 mEventData->mPreEditStartPosition = 0;
494 mEventData->mPreEditLength = 0;
498 void ResetInputMethodContext()
502 // Reset incase we are in a pre-edit state.
503 if(mEventData->mInputMethodContext)
505 mEventData->mInputMethodContext.Reset(); // Will trigger a message ( commit, get surrounding )
512 float GetFontSizeScale()
514 return mFontSizeScaleEnabled ? mFontSizeScale : 1.0f;
518 * @brief Helper to notify InputMethodContext with surrounding text & cursor changes.
520 void NotifyInputMethodContext();
523 * @brief Helper to notify InputMethodContext with multi line status.
525 void NotifyInputMethodContextMultiLineStatus();
528 * @brief Retrieve the current cursor position.
530 * @return The cursor position.
532 CharacterIndex GetLogicalCursorPosition() const;
535 * @brief Retrieves the number of consecutive white spaces starting from the given @p index.
537 * @param[in] index The character index from where to count the number of consecutive white spaces.
539 * @return The number of consecutive white spaces.
541 Length GetNumberOfWhiteSpaces(CharacterIndex index) const;
544 * @brief Retrieve any text previously set.
546 * @param[out] text A string of UTF-8 characters.
548 void GetText(std::string& text) const;
551 * @brief Retrieve any text previously set starting from the given @p index.
553 * @param[in] index The character index from where to retrieve the text.
554 * @param[out] text A string of UTF-8 characters.
556 * @see Dali::Toolkit::Text::Controller::GetText()
558 void GetText(CharacterIndex index, std::string& text) const;
561 * @brief Retrieves number of characters previously set.
563 * @return A length of UTF-32 characters.
565 * @see Dali::Toolkit::Text::Controller::GetNumberOfCharacters()
567 Length GetNumberOfCharacters() const;
569 bool EnsureClipboardCreated()
573 mClipboard = Clipboard::Get();
576 return mClipboard != nullptr ? true : false;
579 bool IsClipboardEmpty()
581 bool result(Clipboard::IsAvailable() && EnsureClipboardCreated() && mClipboard.NumberOfItems());
582 return !result; // If NumberOfItems greater than 0, return false
585 bool IsClipboardVisible()
587 bool result(Clipboard::IsAvailable() && EnsureClipboardCreated() && mClipboard.IsVisible());
592 * @copydoc Controller::GetLayoutDirection()
594 Dali::LayoutDirection::Type GetLayoutDirection(Dali::Actor& actor) const;
597 * @brief Checks text direction.
598 * @return The text direction.
600 Toolkit::DevelText::TextDirection::Type GetTextDirection();
603 * @brief Calculates the start character index of the first paragraph to be updated and
604 * the end character index of the last paragraph to be updated.
606 * @param[out] numberOfCharacters The number of characters to be updated.
608 void CalculateTextUpdateIndices(Length& numberOfCharacters);
611 * @brief Helper to clear the parts of the model specified by the given @p operations and from @p startIndex to @p endIndex.
613 * @note It never clears the text stored in utf32.
615 * @param[in] startIndex Index to the first character to be cleared.
616 * @param[in] endIndex Index to the last character to be cleared.
617 * @param[in] operations The operations required.
619 void ClearModelData(CharacterIndex startIndex, CharacterIndex endIndex, OperationsMask operations);
622 * @brief Updates the logical and visual models. Updates the style runs in the visual model when the text's styles changes.
624 * When text or style changes the model is set with some operations pending.
625 * When i.e. the text's size or a relayout is required this method is called
626 * with a given @p operationsRequired parameter. The operations required are
627 * matched with the operations pending to perform the minimum number of operations.
629 * @param[in] operationsRequired The operations required.
631 * @return @e true if the model has been modified.
633 bool UpdateModel(OperationsMask operationsRequired);
636 * @brief Retreieves the default style.
638 * @param[out] inputStyle The default style.
640 void RetrieveDefaultInputStyle(InputStyle& inputStyle);
643 * @brief Retrieve the line height of the default font.
645 float GetDefaultFontLineHeight();
648 * @copydoc Controller::SetDefaultLineSpacing
650 bool SetDefaultLineSpacing(float lineSpacing);
653 * @copydoc Controller::SetDefaultLineSize
655 bool SetDefaultLineSize(float lineSize);
658 * @copydoc Controller::SetRelativeLineSize
660 bool SetRelativeLineSize(float relativeLineSize);
663 * @copydoc Controller::GetRelativeLineSize
665 float GetRelativeLineSize();
668 * @copydoc Text::Controller::GetPrimaryCursorPosition()
670 CharacterIndex GetPrimaryCursorPosition() const;
673 * @copydoc Text::Controller::SetPrimaryCursorPosition()
675 bool SetPrimaryCursorPosition(CharacterIndex index, bool focused);
678 * @copydoc Text::SelectableControlInterface::GetSelectedText()
680 string GetSelectedText();
683 * @copydoc Text::EditableControlInterface::CopyText()
688 * @copydoc Text::EditableControlInterface::CutText()
693 * @copydoc Text::SelectableControlInterface::SetTextSelectionRange()
695 void SetTextSelectionRange(const uint32_t* pStart, const uint32_t* pEndf);
698 * @copydoc Text::SelectableControlInterface::GetTextSelectionRange()
700 Uint32Pair GetTextSelectionRange() const;
703 * @copydoc Text::EditableControlInterface::IsEditable()
705 bool IsEditable() const;
708 * @copydoc Text::EditableControlInterface::SetEditable()
710 void SetEditable(bool editable);
713 * @copydoc Controller::UpdateAfterFontChange
715 void UpdateAfterFontChange(const std::string& newDefaultFont);
718 * @brief Retrieves the selected text. It removes the text if the @p deleteAfterRetrieval parameter is @e true.
720 * @param[out] selectedText The selected text encoded in utf8.
721 * @param[in] deleteAfterRetrieval Whether the text should be deleted after retrieval.
723 void RetrieveSelection(std::string& selectedText, bool deleteAfterRetrieval);
725 void SetSelection(int start, int end);
727 std::pair<int, int> GetSelectionIndexes() const;
729 void ShowClipboard();
731 void HideClipboard();
733 void SetClipboardHideEnable(bool enable);
735 bool CopyStringToClipboard(const std::string& source);
737 void SendSelectionToClipboard(bool deleteAfterSending);
739 void RepositionSelectionHandles();
740 void RepositionSelectionHandles(float visualX, float visualY, Controller::NoTextTap::Action action);
742 void SetPopupButtons();
744 void ChangeState(EventData::State newState);
747 * @brief Calculates the cursor's position for a given character index in the logical order.
749 * It retrieves as well the line's height and the cursor's height and
750 * if there is a valid alternative cursor, its position and height.
752 * @param[in] logical The logical cursor position (in characters). 0 is just before the first character, a value equal to the number of characters is just after the last character.
753 * @param[out] cursorInfo The line's height, the cursor's height, the cursor's position and whether there is an alternative cursor.
755 void GetCursorPosition(CharacterIndex logical,
756 CursorInfo& cursorInfo);
759 * @brief Calculates the new cursor index.
761 * It takes into account that in some scripts multiple characters can form a glyph and all of them
762 * need to be jumped with one key event.
764 * @param[in] index The initial new index.
766 * @return The new cursor index.
768 CharacterIndex CalculateNewCursorIndex(CharacterIndex index) const;
771 * @brief Updates the cursor position.
773 * Sets the cursor's position into the decorator. It transforms the cursor's position into decorator's coords.
774 * It sets the position of the secondary cursor if it's a valid one.
775 * Sets which cursors are active.
777 * @param[in] cursorInfo Contains the selection handle position in Actor's coords.
780 void UpdateCursorPosition(const CursorInfo& cursorInfo);
783 * @brief Updates the position of the given selection handle. It transforms the handle's position into decorator's coords.
785 * @param[in] handleType One of the selection handles.
786 * @param[in] cursorInfo Contains the selection handle position in Actor's coords.
788 void UpdateSelectionHandle(HandleType handleType,
789 const CursorInfo& cursorInfo);
792 * @biref Clamps the horizontal scrolling to get the control always filled with text.
794 * @param[in] layoutSize The size of the laid out text.
796 void ClampHorizontalScroll(const Vector2& layoutSize);
799 * @biref Clamps the vertical scrolling to get the control always filled with text.
801 * @param[in] layoutSize The size of the laid out text.
803 void ClampVerticalScroll(const Vector2& layoutSize);
806 * @brief Scrolls the text to make a position visible.
808 * @pre mEventData must not be NULL. (there is a text-input or selection capabilities).
810 * @param[in] position A position in text coords.
811 * @param[in] lineHeight The line height for the given position.
813 * This method is called after inserting text, moving the cursor with the grab handle or the keypad,
814 * or moving the selection handles.
816 void ScrollToMakePositionVisible(const Vector2& position, float lineHeight);
819 * @brief Scrolls the text to make the cursor visible.
821 * This method is called after deleting text.
823 void ScrollTextToMatchCursor(const CursorInfo& cursorInfo);
826 * @brief Scrolls the text to make primary cursor visible.
828 void ScrollTextToMatchCursor();
831 * @brief Create an actor that renders the text background color
833 * @return the created actor or an empty handle if no background color needs to be rendered.
835 Actor CreateBackgroundActor();
838 * @brief fill needed relayout parameters whenever a property is changed and a re-layout is needed for the entire text.
840 void RelayoutAllCharacters();
843 * @copydoc Controller::IsInputStyleChangedSignalsQueueEmpty
845 bool IsInputStyleChangedSignalsQueueEmpty();
848 * @copydoc Controller::ProcessInputStyleChangedSignals
850 void ProcessInputStyleChangedSignals();
853 * @copydoc Controller::ScrollBy()
855 void ScrollBy(Vector2 scroll);
858 * @copydoc Controller::IsScrollable()
860 bool IsScrollable(const Vector2& displacement);
863 * @copydoc Controller::GetHorizontalScrollPosition()
865 float GetHorizontalScrollPosition();
868 * @copydoc Controller::GetVerticalScrollPosition()
870 float GetVerticalScrollPosition();
873 * @copydoc Controller::SetAutoScrollEnabled()
875 void SetAutoScrollEnabled(bool enable);
878 * @copydoc Controller::SetEnableCursorBlink()
880 void SetEnableCursorBlink(bool enable);
883 * @copydoc Controller::SetMultiLineEnabled()
885 void SetMultiLineEnabled(bool enable);
888 * @copydoc Controller::SetHorizontalAlignment()
890 void SetHorizontalAlignment(HorizontalAlignment::Type alignment);
893 * @copydoc Controller::SetVerticalAlignment()
895 void SetVerticalAlignment(VerticalAlignment::Type alignment);
898 * @copydoc Controller::SetLineWrapMode()
900 void SetLineWrapMode(Text::LineWrap::Mode textWarpMode);
903 * @copydoc Controller::SetDefaultColor()
905 void SetDefaultColor(const Vector4& color);
908 * @copydoc Controller::SetUserInteractionEnabled()
910 void SetUserInteractionEnabled(bool enabled);
913 * @brief Helper to clear font-specific data (only).
915 void ClearFontData();
918 * @brief Helper to clear text's style data.
920 void ClearStyleData();
923 * @brief Used to reset the scroll position after setting a new text.
925 void ResetScrollPosition();
928 * @brief Resets a provided vector with actors that marks the position of anchors in markup enabled text
930 * @param[out] anchorActors the vector of actor (empty collection if no anchors available).
932 void GetAnchorActors(std::vector<Toolkit::TextAnchor>& anchorActors);
935 * @brief Return an index of first anchor in the anchor vector whose boundaries includes given character offset
937 * @param[in] characterOffset A position in text coords.
939 * @return the 0-based index in anchor vector (-1 if an anchor not found)
941 int32_t GetAnchorIndex(size_t characterOffset) const;
944 * @brief Return the geometrical position of an anchor relative to the parent origin point.
946 * @param[in] anchor An anchor.
948 * @return The x, y, z coordinates of an anchor.
950 Vector3 GetAnchorPosition(Anchor anchor) const;
953 * @brief Return the size of an anchor expresed as a vector containing anchor's width and height.
955 * @param[in] anchor An anchor.
957 * @return The width and height of an anchor.
959 Vector2 GetAnchorSize(Anchor anchor) const;
962 * @brief Return the actor representing an anchor.
964 * @param[in] anchor An anchor.
966 * @return The actor representing an anchor.
968 Toolkit::TextAnchor CreateAnchorActor(Anchor anchor);
972 * @brief Gets implementation from the controller handle.
973 * @param controller The text controller
974 * @return The implementation of the Controller
976 static Impl& GetImplementation(Text::Controller& controller)
978 return *controller.mImpl;
982 // Declared private and left undefined to avoid copies.
984 // Declared private and left undefined to avoid copies.
985 Impl& operator=(const Impl&);
988 * @brief Copy Underlined-Character-Runs from Logical-Model to Underlined-Glyph-Runs in Visual-Model
990 * @param shouldClearPreUnderlineRuns Whether should clear the existing Underlined-Glyph-Runs in Visual-Model
992 void CopyUnderlinedFromLogicalToVisualModels(bool shouldClearPreUnderlineRuns);
995 * @brief Copy strikethrough-Character-Runs from Logical-Model to strikethrough-Glyph-Runs in Visual-Model
998 void CopyStrikethroughFromLogicalToVisualModels();
1001 * @brief Copy CharacterSpacing-Character-Runs from Logical-Model to CharacterSpacing-Glyph-Runs in Visual-Model
1004 void CopyCharacterSpacingFromLogicalToVisualModels();
1007 ControlInterface* mControlInterface; ///< Reference to the text controller.
1008 EditableControlInterface* mEditableControlInterface; ///< Reference to the editable text controller.
1009 SelectableControlInterface* mSelectableControlInterface; ///< Reference to the selectable text controller.
1010 AnchorControlInterface* mAnchorControlInterface; ///< Reference to the anchor controller.
1011 ModelPtr mModel; ///< Pointer to the text's model.
1012 FontDefaults* mFontDefaults; ///< Avoid allocating this when the user does not specify a font.
1013 UnderlineDefaults* mUnderlineDefaults; ///< Avoid allocating this when the user does not specify underline parameters.
1014 ShadowDefaults* mShadowDefaults; ///< Avoid allocating this when the user does not specify shadow parameters.
1015 EmbossDefaults* mEmbossDefaults; ///< Avoid allocating this when the user does not specify emboss parameters.
1016 OutlineDefaults* mOutlineDefaults; ///< Avoid allocating this when the user does not specify outline parameters.
1017 EventData* mEventData; ///< Avoid allocating everything for text input until EnableTextInput().
1018 TextAbstraction::FontClient mFontClient; ///< Handle to the font client.
1019 Clipboard mClipboard; ///< Handle to the system clipboard
1020 View mView; ///< The view interface to the rendering back-end.
1021 MetricsPtr mMetrics; ///< A wrapper around FontClient used to get metrics & potentially down-scaled Emoji metrics.
1022 Layout::Engine mLayoutEngine; ///< The layout engine.
1023 Vector<ModifyEvent> mModifyEvents; ///< Temporary stores the text set until the next relayout.
1024 Vector4 mTextColor; ///< The regular text color
1025 TextUpdateInfo mTextUpdateInfo; ///< Info of the characters updated.
1026 OperationsMask mOperationsPending; ///< Operations pending to be done to layout the text.
1027 Length mMaximumNumberOfCharacters; ///< Maximum number of characters that can be inserted.
1028 HiddenText* mHiddenInput; ///< Avoid allocating this when the user does not specify hidden input mode.
1029 std::unique_ptr<InputFilter> mInputFilter; ///< Avoid allocating this when the user does not specify input filter mode.
1030 Vector2 mTextFitContentSize; ///< Size of Text fit content
1032 std::vector<Toolkit::DevelTextLabel::FitOption> mTextFitArray; ///< List of FitOption for TextFitArray operation.
1034 bool mRecalculateNaturalSize : 1; ///< Whether the natural size needs to be recalculated.
1035 bool mMarkupProcessorEnabled : 1; ///< Whether the mark-up procesor is enabled.
1036 bool mClipboardHideEnabled : 1; ///< Whether the ClipboardHide function work or not
1037 bool mIsAutoScrollEnabled : 1; ///< Whether auto text scrolling is enabled.
1038 bool mIsAutoScrollMaxTextureExceeded : 1; ///< Whether auto text scrolling is exceed max texture size.
1039 bool mUpdateTextDirection : 1; ///< Whether the text direction needs to be updated.
1040 CharacterDirection mIsTextDirectionRTL : 1; ///< Whether the text direction is right to left or not
1042 bool mUnderlineSetByString : 1; ///< Set when underline is set by string (legacy) instead of map
1043 bool mShadowSetByString : 1; ///< Set when shadow is set by string (legacy) instead of map
1044 bool mOutlineSetByString : 1; ///< Set when outline is set by string (legacy) instead of map
1045 bool mFontStyleSetByString : 1; ///< Set when font style is set by string (legacy) instead of map
1046 bool mStrikethroughSetByString : 1; ///< Set when strikethrough is set by string (legacy) instead of map
1047 bool mShouldClearFocusOnEscape : 1; ///< Whether text control should clear key input focus
1048 LayoutDirection::Type mLayoutDirection; ///< Current system language direction
1050 Shader mShaderBackground; ///< The shader for text background.
1052 float mCurrentLineSize; ///< Used to store the MinLineSize set by user when TextFitArray is enabled.
1053 float mTextFitMinSize; ///< Minimum Font Size for text fit. Default 10
1054 float mTextFitMaxSize; ///< Maximum Font Size for text fit. Default 100
1055 float mTextFitStepSize; ///< Step Size for font intervalse. Default 1
1056 float mTextFitLineSize; ///< This is the LineSize that is the standard when performing TextFit.
1057 float mFontSizeScale; ///< Scale value for Font Size. Default 1.0
1058 float mDisabledColorOpacity; ///< Color opacity when disabled.
1059 bool mFontSizeScaleEnabled : 1; ///< Whether the font size scale is enabled.
1060 bool mTextFitEnabled : 1; ///< Whether the text's fit is enabled.
1061 bool mTextFitChanged : 1; ///< Whether the text fit property has changed.
1062 bool mTextFitArrayEnabled : 1; ///< Whether the text's fit array is enabled.
1063 bool mIsLayoutDirectionChanged : 1; ///< Whether the layout has changed.
1064 bool mIsUserInteractionEnabled : 1; ///< Whether the user interaction is enabled.
1067 friend ControllerImplEventHandler;
1068 friend ControllerImplModelUpdater;
1069 friend SelectionHandleController;
1074 } // namespace Toolkit
1078 #endif // DALI_TOOLKIT_TEXT_CONTROLLER_H