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),
339 mAnchorColor(Color::MEDIUM_BLUE),
340 mAnchorClickedColor(Color::DARK_MAGENTA),
342 mOperationsPending(NO_OPERATION),
343 mMaximumNumberOfCharacters(50u),
345 mInputFilter(nullptr),
346 mTextFitContentSize(),
348 mRecalculateNaturalSize(true),
349 mMarkupProcessorEnabled(false),
350 mClipboardHideEnabled(true),
351 mIsAutoScrollEnabled(false),
352 mIsAutoScrollMaxTextureExceeded(false),
353 mUpdateTextDirection(true),
354 mIsTextDirectionRTL(false),
355 mUnderlineSetByString(false),
356 mShadowSetByString(false),
357 mOutlineSetByString(false),
358 mFontStyleSetByString(false),
359 mStrikethroughSetByString(false),
360 mShouldClearFocusOnEscape(true),
361 mLayoutDirection(LayoutDirection::LEFT_TO_RIGHT),
362 mCurrentLineSize(0.f),
363 mTextFitMinSize(DEFAULT_TEXTFIT_MIN),
364 mTextFitMaxSize(DEFAULT_TEXTFIT_MAX),
365 mTextFitStepSize(DEFAULT_TEXTFIT_STEP),
366 mTextFitLineSize(0.f),
367 mFontSizeScale(DEFAULT_FONT_SIZE_SCALE),
368 mDisabledColorOpacity(DEFAULT_DISABLED_COLOR_OPACITY),
369 mFontSizeScaleEnabled(true),
370 mTextFitEnabled(false),
371 mTextFitChanged(false),
372 mTextFitArrayEnabled(false),
373 mIsLayoutDirectionChanged(false),
374 mIsUserInteractionEnabled(true)
376 mModel = Model::New();
378 mFontClient = TextAbstraction::FontClient::Get();
379 if(mEditableControlInterface != nullptr && Clipboard::IsAvailable())
381 mClipboard = Clipboard::Get();
384 mView.SetVisualModel(mModel->mVisualModel);
385 mView.SetLogicalModel(mModel->mLogicalModel);
387 // Use this to access FontClient i.e. to get down-scaled Emoji metrics.
388 mMetrics = Metrics::New(mFontClient);
389 mLayoutEngine.SetMetrics(mMetrics);
391 // Set the text properties to default
392 mModel->mVisualModel->SetUnderlineEnabled(false);
393 mModel->mVisualModel->SetUnderlineHeight(0.0f);
395 Toolkit::StyleManager styleManager = Toolkit::StyleManager::Get();
398 const auto clearFocusOnEscapeValue = Toolkit::DevelStyleManager::GetConfigurations(styleManager).Find("clearFocusOnEscape", Property::Type::BOOLEAN);
400 // Default is true. If config don't have "clearFocusOnEscape" property, make it true.
401 mShouldClearFocusOnEscape = (!clearFocusOnEscapeValue || clearFocusOnEscapeValue->Get<bool>());
408 delete mFontDefaults;
409 delete mUnderlineDefaults;
410 delete mShadowDefaults;
411 delete mEmbossDefaults;
412 delete mOutlineDefaults;
416 // Text Controller Implementation.
419 * @copydoc Text::Controller::RequestRelayout()
421 void RequestRelayout();
424 * @brief Request a relayout using the ControlInterface.
426 void QueueModifyEvent(ModifyEvent::Type type)
428 if(ModifyEvent::TEXT_REPLACED == type)
430 // Cancel previously queued inserts etc.
431 mModifyEvents.Clear();
436 mModifyEvents.PushBack(event);
438 // The event will be processed during relayout
443 * @brief Helper to move the cursor, grab handle etc.
445 bool ProcessInputEvents();
448 * @brief Helper to check whether any place-holder text is available.
450 bool IsPlaceholderAvailable() const
452 return (mEventData &&
453 (!mEventData->mPlaceholderTextInactive.empty() ||
454 !mEventData->mPlaceholderTextActive.empty()));
457 bool IsShowingPlaceholderText() const
459 return (mEventData && mEventData->mIsShowingPlaceholderText);
463 * @brief Helper to check whether active place-holder text is available.
465 bool IsFocusedPlaceholderAvailable() const
467 return (mEventData && !mEventData->mPlaceholderTextActive.empty());
470 bool IsShowingRealText() const
472 return (!IsShowingPlaceholderText() &&
473 0u != mModel->mLogicalModel->mText.Count());
477 * @brief Called when placeholder-text is hidden
479 void PlaceholderCleared()
483 mEventData->mIsShowingPlaceholderText = false;
485 // Remove mPlaceholderTextColor
486 mModel->mVisualModel->SetTextColor(mTextColor);
490 void ClearPreEditFlag()
494 mEventData->mPreEditFlag = false;
495 mEventData->mPreEditStartPosition = 0;
496 mEventData->mPreEditLength = 0;
500 void ResetInputMethodContext()
504 // Reset incase we are in a pre-edit state.
505 if(mEventData->mInputMethodContext)
507 mEventData->mInputMethodContext.Reset(); // Will trigger a message ( commit, get surrounding )
514 float GetFontSizeScale()
516 return mFontSizeScaleEnabled ? mFontSizeScale : 1.0f;
520 * @copydoc Controller::SetAnchorColor()
522 void SetAnchorColor(const Vector4& color);
525 * @copydoc Controller::GetAnchorColor()
527 const Vector4& GetAnchorColor() const;
530 * @copydoc Controller::SetAnchorClickedColor()
532 void SetAnchorClickedColor(const Vector4& color);
535 * @copydoc Controller::GetAnchorClickedColor()
537 const Vector4& GetAnchorClickedColor() const;
540 * @brief Updates the color of anchors.
542 void UpdateAnchorColor();
545 * @brief Helper to notify InputMethodContext with surrounding text & cursor changes.
547 void NotifyInputMethodContext();
550 * @brief Helper to notify InputMethodContext with multi line status.
552 void NotifyInputMethodContextMultiLineStatus();
555 * @brief Retrieve the current cursor position.
557 * @return The cursor position.
559 CharacterIndex GetLogicalCursorPosition() const;
562 * @brief Retrieves the number of consecutive white spaces starting from the given @p index.
564 * @param[in] index The character index from where to count the number of consecutive white spaces.
566 * @return The number of consecutive white spaces.
568 Length GetNumberOfWhiteSpaces(CharacterIndex index) const;
571 * @brief Retrieve any text previously set.
573 * @param[out] text A string of UTF-8 characters.
575 void GetText(std::string& text) const;
578 * @brief Retrieve any text previously set starting from the given @p index.
580 * @param[in] index The character index from where to retrieve the text.
581 * @param[out] text A string of UTF-8 characters.
583 * @see Dali::Toolkit::Text::Controller::GetText()
585 void GetText(CharacterIndex index, std::string& text) const;
588 * @brief Retrieves number of characters previously set.
590 * @return A length of UTF-32 characters.
592 * @see Dali::Toolkit::Text::Controller::GetNumberOfCharacters()
594 Length GetNumberOfCharacters() const;
596 bool EnsureClipboardCreated()
600 mClipboard = Clipboard::Get();
603 return mClipboard != nullptr ? true : false;
606 bool IsClipboardEmpty()
608 bool result(Clipboard::IsAvailable() && EnsureClipboardCreated() && mClipboard.NumberOfItems());
609 return !result; // If NumberOfItems greater than 0, return false
612 bool IsClipboardVisible()
614 bool result(Clipboard::IsAvailable() && EnsureClipboardCreated() && mClipboard.IsVisible());
619 * @copydoc Controller::GetLayoutDirection()
621 Dali::LayoutDirection::Type GetLayoutDirection(Dali::Actor& actor) const;
624 * @brief Checks text direction.
625 * @return The text direction.
627 Toolkit::DevelText::TextDirection::Type GetTextDirection();
630 * @brief Calculates the start character index of the first paragraph to be updated and
631 * the end character index of the last paragraph to be updated.
633 * @param[out] numberOfCharacters The number of characters to be updated.
635 void CalculateTextUpdateIndices(Length& numberOfCharacters);
638 * @brief Helper to clear the parts of the model specified by the given @p operations and from @p startIndex to @p endIndex.
640 * @note It never clears the text stored in utf32.
642 * @param[in] startIndex Index to the first character to be cleared.
643 * @param[in] endIndex Index to the last character to be cleared.
644 * @param[in] operations The operations required.
646 void ClearModelData(CharacterIndex startIndex, CharacterIndex endIndex, OperationsMask operations);
649 * @brief Updates the logical and visual models. Updates the style runs in the visual model when the text's styles changes.
651 * When text or style changes the model is set with some operations pending.
652 * When i.e. the text's size or a relayout is required this method is called
653 * with a given @p operationsRequired parameter. The operations required are
654 * matched with the operations pending to perform the minimum number of operations.
656 * @param[in] operationsRequired The operations required.
658 * @return @e true if the model has been modified.
660 bool UpdateModel(OperationsMask operationsRequired);
663 * @brief Retreieves the default style.
665 * @param[out] inputStyle The default style.
667 void RetrieveDefaultInputStyle(InputStyle& inputStyle);
670 * @brief Retrieve the line height of the default font.
672 float GetDefaultFontLineHeight();
675 * @copydoc Controller::SetDefaultLineSpacing
677 bool SetDefaultLineSpacing(float lineSpacing);
680 * @copydoc Controller::SetDefaultLineSize
682 bool SetDefaultLineSize(float lineSize);
685 * @copydoc Controller::SetRelativeLineSize
687 bool SetRelativeLineSize(float relativeLineSize);
690 * @copydoc Controller::GetRelativeLineSize
692 float GetRelativeLineSize();
695 * @copydoc Text::Controller::GetPrimaryCursorPosition()
697 CharacterIndex GetPrimaryCursorPosition() const;
700 * @copydoc Text::Controller::SetPrimaryCursorPosition()
702 bool SetPrimaryCursorPosition(CharacterIndex index, bool focused);
705 * @copydoc Text::SelectableControlInterface::GetSelectedText()
707 string GetSelectedText();
710 * @copydoc Text::EditableControlInterface::CopyText()
715 * @copydoc Text::EditableControlInterface::CutText()
720 * @copydoc Text::SelectableControlInterface::SetTextSelectionRange()
722 void SetTextSelectionRange(const uint32_t* pStart, const uint32_t* pEndf);
725 * @copydoc Text::SelectableControlInterface::GetTextSelectionRange()
727 Uint32Pair GetTextSelectionRange() const;
730 * @copydoc Text::EditableControlInterface::IsEditable()
732 bool IsEditable() const;
735 * @copydoc Text::EditableControlInterface::SetEditable()
737 void SetEditable(bool editable);
740 * @copydoc Controller::UpdateAfterFontChange
742 void UpdateAfterFontChange(const std::string& newDefaultFont);
745 * @brief Retrieves the selected text. It removes the text if the @p deleteAfterRetrieval parameter is @e true.
747 * @param[out] selectedText The selected text encoded in utf8.
748 * @param[in] deleteAfterRetrieval Whether the text should be deleted after retrieval.
750 void RetrieveSelection(std::string& selectedText, bool deleteAfterRetrieval);
752 void SetSelection(int start, int end);
754 std::pair<int, int> GetSelectionIndexes() const;
756 void ShowClipboard();
758 void HideClipboard();
760 void SetClipboardHideEnable(bool enable);
762 bool CopyStringToClipboard(const std::string& source);
764 void SendSelectionToClipboard(bool deleteAfterSending);
766 void RepositionSelectionHandles();
767 void RepositionSelectionHandles(float visualX, float visualY, Controller::NoTextTap::Action action);
769 void SetPopupButtons();
771 void ChangeState(EventData::State newState);
774 * @brief Calculates the cursor's position for a given character index in the logical order.
776 * It retrieves as well the line's height and the cursor's height and
777 * if there is a valid alternative cursor, its position and height.
779 * @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.
780 * @param[out] cursorInfo The line's height, the cursor's height, the cursor's position and whether there is an alternative cursor.
782 void GetCursorPosition(CharacterIndex logical,
783 CursorInfo& cursorInfo);
786 * @brief Calculates the new cursor index.
788 * It takes into account that in some scripts multiple characters can form a glyph and all of them
789 * need to be jumped with one key event.
791 * @param[in] index The initial new index.
793 * @return The new cursor index.
795 CharacterIndex CalculateNewCursorIndex(CharacterIndex index) const;
798 * @brief Updates the cursor position.
800 * Sets the cursor's position into the decorator. It transforms the cursor's position into decorator's coords.
801 * It sets the position of the secondary cursor if it's a valid one.
802 * Sets which cursors are active.
804 * @param[in] cursorInfo Contains the selection handle position in Actor's coords.
807 void UpdateCursorPosition(const CursorInfo& cursorInfo);
810 * @brief Updates the position of the given selection handle. It transforms the handle's position into decorator's coords.
812 * @param[in] handleType One of the selection handles.
813 * @param[in] cursorInfo Contains the selection handle position in Actor's coords.
815 void UpdateSelectionHandle(HandleType handleType,
816 const CursorInfo& cursorInfo);
819 * @biref Clamps the horizontal scrolling to get the control always filled with text.
821 * @param[in] layoutSize The size of the laid out text.
823 void ClampHorizontalScroll(const Vector2& layoutSize);
826 * @biref Clamps the vertical scrolling to get the control always filled with text.
828 * @param[in] layoutSize The size of the laid out text.
830 void ClampVerticalScroll(const Vector2& layoutSize);
833 * @brief Scrolls the text to make a position visible.
835 * @pre mEventData must not be NULL. (there is a text-input or selection capabilities).
837 * @param[in] position A position in text coords.
838 * @param[in] lineHeight The line height for the given position.
840 * This method is called after inserting text, moving the cursor with the grab handle or the keypad,
841 * or moving the selection handles.
843 void ScrollToMakePositionVisible(const Vector2& position, float lineHeight);
846 * @brief Scrolls the text to make the cursor visible.
848 * This method is called after deleting text.
850 void ScrollTextToMatchCursor(const CursorInfo& cursorInfo);
853 * @brief Scrolls the text to make primary cursor visible.
855 void ScrollTextToMatchCursor();
858 * @brief Create an actor that renders the text background color
860 * @return the created actor or an empty handle if no background color needs to be rendered.
862 Actor CreateBackgroundActor();
865 * @brief fill needed relayout parameters whenever a property is changed and a re-layout is needed for the entire text.
867 void RelayoutAllCharacters();
870 * @copydoc Controller::IsInputStyleChangedSignalsQueueEmpty
872 bool IsInputStyleChangedSignalsQueueEmpty();
875 * @copydoc Controller::ProcessInputStyleChangedSignals
877 void ProcessInputStyleChangedSignals();
880 * @copydoc Controller::ScrollBy()
882 void ScrollBy(Vector2 scroll);
885 * @copydoc Controller::IsScrollable()
887 bool IsScrollable(const Vector2& displacement);
890 * @copydoc Controller::GetHorizontalScrollPosition()
892 float GetHorizontalScrollPosition();
895 * @copydoc Controller::GetVerticalScrollPosition()
897 float GetVerticalScrollPosition();
900 * @copydoc Controller::SetAutoScrollEnabled()
902 void SetAutoScrollEnabled(bool enable);
905 * @copydoc Controller::SetEnableCursorBlink()
907 void SetEnableCursorBlink(bool enable);
910 * @copydoc Controller::SetMultiLineEnabled()
912 void SetMultiLineEnabled(bool enable);
915 * @copydoc Controller::SetHorizontalAlignment()
917 void SetHorizontalAlignment(HorizontalAlignment::Type alignment);
920 * @copydoc Controller::SetVerticalAlignment()
922 void SetVerticalAlignment(VerticalAlignment::Type alignment);
925 * @copydoc Controller::SetLineWrapMode()
927 void SetLineWrapMode(Text::LineWrap::Mode textWarpMode);
930 * @copydoc Controller::SetDefaultColor()
932 void SetDefaultColor(const Vector4& color);
935 * @copydoc Controller::SetUserInteractionEnabled()
937 void SetUserInteractionEnabled(bool enabled);
940 * @brief Helper to clear font-specific data (only).
942 void ClearFontData();
945 * @brief Helper to clear text's style data.
947 void ClearStyleData();
950 * @brief Used to reset the scroll position after setting a new text.
952 void ResetScrollPosition();
955 * @brief Resets a provided vector with actors that marks the position of anchors in markup enabled text
957 * @param[out] anchorActors the vector of actor (empty collection if no anchors available).
959 void GetAnchorActors(std::vector<Toolkit::TextAnchor>& anchorActors);
962 * @brief Return an index of first anchor in the anchor vector whose boundaries includes given character offset
964 * @param[in] characterOffset A position in text coords.
966 * @return the 0-based index in anchor vector (-1 if an anchor not found)
968 int32_t GetAnchorIndex(size_t characterOffset) const;
971 * @brief Return the geometrical position of an anchor relative to the parent origin point.
973 * @param[in] anchor An anchor.
975 * @return The x, y, z coordinates of an anchor.
977 Vector3 GetAnchorPosition(Anchor anchor) const;
980 * @brief Return the size of an anchor expresed as a vector containing anchor's width and height.
982 * @param[in] anchor An anchor.
984 * @return The width and height of an anchor.
986 Vector2 GetAnchorSize(Anchor anchor) const;
989 * @brief Return the actor representing an anchor.
991 * @param[in] anchor An anchor.
993 * @return The actor representing an anchor.
995 Toolkit::TextAnchor CreateAnchorActor(Anchor anchor);
999 * @brief Gets implementation from the controller handle.
1000 * @param controller The text controller
1001 * @return The implementation of the Controller
1003 static Impl& GetImplementation(Text::Controller& controller)
1005 return *controller.mImpl;
1009 // Declared private and left undefined to avoid copies.
1011 // Declared private and left undefined to avoid copies.
1012 Impl& operator=(const Impl&);
1015 * @brief Copy Underlined-Character-Runs from Logical-Model to Underlined-Glyph-Runs in Visual-Model
1017 * @param shouldClearPreUnderlineRuns Whether should clear the existing Underlined-Glyph-Runs in Visual-Model
1019 void CopyUnderlinedFromLogicalToVisualModels(bool shouldClearPreUnderlineRuns);
1022 * @brief Copy strikethrough-Character-Runs from Logical-Model to strikethrough-Glyph-Runs in Visual-Model
1025 void CopyStrikethroughFromLogicalToVisualModels();
1028 * @brief Copy CharacterSpacing-Character-Runs from Logical-Model to CharacterSpacing-Glyph-Runs in Visual-Model
1031 void CopyCharacterSpacingFromLogicalToVisualModels();
1034 ControlInterface* mControlInterface; ///< Reference to the text controller.
1035 EditableControlInterface* mEditableControlInterface; ///< Reference to the editable text controller.
1036 SelectableControlInterface* mSelectableControlInterface; ///< Reference to the selectable text controller.
1037 AnchorControlInterface* mAnchorControlInterface; ///< Reference to the anchor controller.
1038 ModelPtr mModel; ///< Pointer to the text's model.
1039 FontDefaults* mFontDefaults; ///< Avoid allocating this when the user does not specify a font.
1040 UnderlineDefaults* mUnderlineDefaults; ///< Avoid allocating this when the user does not specify underline parameters.
1041 ShadowDefaults* mShadowDefaults; ///< Avoid allocating this when the user does not specify shadow parameters.
1042 EmbossDefaults* mEmbossDefaults; ///< Avoid allocating this when the user does not specify emboss parameters.
1043 OutlineDefaults* mOutlineDefaults; ///< Avoid allocating this when the user does not specify outline parameters.
1044 EventData* mEventData; ///< Avoid allocating everything for text input until EnableTextInput().
1045 TextAbstraction::FontClient mFontClient; ///< Handle to the font client.
1046 Clipboard mClipboard; ///< Handle to the system clipboard
1047 View mView; ///< The view interface to the rendering back-end.
1048 MetricsPtr mMetrics; ///< A wrapper around FontClient used to get metrics & potentially down-scaled Emoji metrics.
1049 Layout::Engine mLayoutEngine; ///< The layout engine.
1050 Vector<ModifyEvent> mModifyEvents; ///< Temporary stores the text set until the next relayout.
1051 Vector4 mTextColor; ///< The regular text color
1052 Vector4 mAnchorColor; ///< The anchor color
1053 Vector4 mAnchorClickedColor; ///< The anchor clicked color
1054 TextUpdateInfo mTextUpdateInfo; ///< Info of the characters updated.
1055 OperationsMask mOperationsPending; ///< Operations pending to be done to layout the text.
1056 Length mMaximumNumberOfCharacters; ///< Maximum number of characters that can be inserted.
1057 HiddenText* mHiddenInput; ///< Avoid allocating this when the user does not specify hidden input mode.
1058 std::unique_ptr<InputFilter> mInputFilter; ///< Avoid allocating this when the user does not specify input filter mode.
1059 Vector2 mTextFitContentSize; ///< Size of Text fit content
1061 std::vector<Toolkit::DevelTextLabel::FitOption> mTextFitArray; ///< List of FitOption for TextFitArray operation.
1063 bool mRecalculateNaturalSize : 1; ///< Whether the natural size needs to be recalculated.
1064 bool mMarkupProcessorEnabled : 1; ///< Whether the mark-up procesor is enabled.
1065 bool mClipboardHideEnabled : 1; ///< Whether the ClipboardHide function work or not
1066 bool mIsAutoScrollEnabled : 1; ///< Whether auto text scrolling is enabled.
1067 bool mIsAutoScrollMaxTextureExceeded : 1; ///< Whether auto text scrolling is exceed max texture size.
1068 bool mUpdateTextDirection : 1; ///< Whether the text direction needs to be updated.
1069 CharacterDirection mIsTextDirectionRTL : 1; ///< Whether the text direction is right to left or not
1071 bool mUnderlineSetByString : 1; ///< Set when underline is set by string (legacy) instead of map
1072 bool mShadowSetByString : 1; ///< Set when shadow is set by string (legacy) instead of map
1073 bool mOutlineSetByString : 1; ///< Set when outline is set by string (legacy) instead of map
1074 bool mFontStyleSetByString : 1; ///< Set when font style is set by string (legacy) instead of map
1075 bool mStrikethroughSetByString : 1; ///< Set when strikethrough is set by string (legacy) instead of map
1076 bool mShouldClearFocusOnEscape : 1; ///< Whether text control should clear key input focus
1077 LayoutDirection::Type mLayoutDirection; ///< Current system language direction
1079 Shader mShaderBackground; ///< The shader for text background.
1081 float mCurrentLineSize; ///< Used to store the MinLineSize set by user when TextFitArray is enabled.
1082 float mTextFitMinSize; ///< Minimum Font Size for text fit. Default 10
1083 float mTextFitMaxSize; ///< Maximum Font Size for text fit. Default 100
1084 float mTextFitStepSize; ///< Step Size for font intervalse. Default 1
1085 float mTextFitLineSize; ///< This is the LineSize that is the standard when performing TextFit.
1086 float mFontSizeScale; ///< Scale value for Font Size. Default 1.0
1087 float mDisabledColorOpacity; ///< Color opacity when disabled.
1088 bool mFontSizeScaleEnabled : 1; ///< Whether the font size scale is enabled.
1089 bool mTextFitEnabled : 1; ///< Whether the text's fit is enabled.
1090 bool mTextFitChanged : 1; ///< Whether the text fit property has changed.
1091 bool mTextFitArrayEnabled : 1; ///< Whether the text's fit array is enabled.
1092 bool mIsLayoutDirectionChanged : 1; ///< Whether the layout has changed.
1093 bool mIsUserInteractionEnabled : 1; ///< Whether the user interaction is enabled.
1096 friend ControllerImplEventHandler;
1097 friend ControllerImplModelUpdater;
1098 friend SelectionHandleController;
1103 } // namespace Toolkit
1107 #endif // DALI_TOOLKIT_TEXT_CONTROLLER_H