+ // Retrieves the scripts used in the text.
+ multilanguageSupport.SetScripts( utf32Characters,
+ startIndex,
+ requestedNumberOfCharacters,
+ scripts );
+ }
+
+ if( validateFonts )
+ {
+ // Validate the fonts set through the mark-up string.
+ Vector<FontDescriptionRun>& fontDescriptionRuns = mLogicalModel->mFontDescriptionRuns;
+
+ // Get the default font id.
+ const FontId defaultFontId = ( NULL == mFontDefaults ) ? 0u : mFontDefaults->GetFontId( mFontClient );
+
+ // Validates the fonts. If there is a character with no assigned font it sets a default one.
+ // After this call, fonts are validated.
+ multilanguageSupport.ValidateFonts( utf32Characters,
+ scripts,
+ fontDescriptionRuns,
+ defaultFontId,
+ startIndex,
+ requestedNumberOfCharacters,
+ validFonts );
+ }
+ updated = true;
+ }
+
+ Vector<Character> mirroredUtf32Characters;
+ bool textMirrored = false;
+ const Length numberOfParagraphs = mLogicalModel->mParagraphInfo.Count();
+ if( NO_OPERATION != ( BIDI_INFO & operations ) )
+ {
+ Vector<BidirectionalParagraphInfoRun>& bidirectionalInfo = mLogicalModel->mBidirectionalParagraphInfo;
+ bidirectionalInfo.Reserve( numberOfParagraphs );
+
+ // Calculates the bidirectional info for the whole paragraph if it contains right to left scripts.
+ SetBidirectionalInfo( utf32Characters,
+ scripts,
+ lineBreakInfo,
+ startIndex,
+ requestedNumberOfCharacters,
+ bidirectionalInfo );
+
+ if( 0u != bidirectionalInfo.Count() )
+ {
+ // Only set the character directions if there is right to left characters.
+ Vector<CharacterDirection>& directions = mLogicalModel->mCharacterDirections;
+ GetCharactersDirection( bidirectionalInfo,
+ numberOfCharacters,
+ startIndex,
+ requestedNumberOfCharacters,
+ directions );
+
+ // This paragraph has right to left text. Some characters may need to be mirrored.
+ // TODO: consider if the mirrored string can be stored as well.
+
+ textMirrored = GetMirroredText( utf32Characters,
+ directions,
+ bidirectionalInfo,
+ startIndex,
+ requestedNumberOfCharacters,
+ mirroredUtf32Characters );
+ }
+ else
+ {
+ // There is no right to left characters. Clear the directions vector.
+ mLogicalModel->mCharacterDirections.Clear();
+ }
+ updated = true;
+ }
+
+ Vector<GlyphInfo>& glyphs = mVisualModel->mGlyphs;
+ Vector<CharacterIndex>& glyphsToCharactersMap = mVisualModel->mGlyphsToCharacters;
+ Vector<Length>& charactersPerGlyph = mVisualModel->mCharactersPerGlyph;
+ Vector<GlyphIndex> newParagraphGlyphs;
+ newParagraphGlyphs.Reserve( numberOfParagraphs );
+
+ const Length currentNumberOfGlyphs = glyphs.Count();
+ if( NO_OPERATION != ( SHAPE_TEXT & operations ) )
+ {
+ const Vector<Character>& textToShape = textMirrored ? mirroredUtf32Characters : utf32Characters;
+ // Shapes the text.
+ ShapeText( textToShape,
+ lineBreakInfo,
+ scripts,
+ validFonts,
+ startIndex,
+ mTextUpdateInfo.mStartGlyphIndex,
+ requestedNumberOfCharacters,
+ glyphs,
+ glyphsToCharactersMap,
+ charactersPerGlyph,
+ newParagraphGlyphs );
+
+ // Create the 'number of glyphs' per character and the glyph to character conversion tables.
+ mVisualModel->CreateGlyphsPerCharacterTable( startIndex, mTextUpdateInfo.mStartGlyphIndex, requestedNumberOfCharacters );
+ mVisualModel->CreateCharacterToGlyphTable( startIndex, mTextUpdateInfo.mStartGlyphIndex, requestedNumberOfCharacters );
+ updated = true;
+ }
+
+ const Length numberOfGlyphs = glyphs.Count() - currentNumberOfGlyphs;
+
+ if( NO_OPERATION != ( GET_GLYPH_METRICS & operations ) )
+ {
+ GlyphInfo* glyphsBuffer = glyphs.Begin();
+ mMetrics->GetGlyphMetrics( glyphsBuffer + mTextUpdateInfo.mStartGlyphIndex, numberOfGlyphs );
+
+ // Update the width and advance of all new paragraph characters.
+ for( Vector<GlyphIndex>::ConstIterator it = newParagraphGlyphs.Begin(), endIt = newParagraphGlyphs.End(); it != endIt; ++it )
+ {
+ const GlyphIndex index = *it;
+ GlyphInfo& glyph = *( glyphsBuffer + index );
+
+ glyph.xBearing = 0.f;
+ glyph.width = 0.f;
+ glyph.advance = 0.f;
+ }
+ updated = true;
+ }
+
+ if( NO_OPERATION != ( COLOR & operations ) )
+ {
+ // Set the color runs in glyphs.
+ SetColorSegmentationInfo( mLogicalModel->mColorRuns,
+ mVisualModel->mCharactersToGlyph,
+ mVisualModel->mGlyphsPerCharacter,
+ startIndex,
+ mTextUpdateInfo.mStartGlyphIndex,
+ requestedNumberOfCharacters,
+ mVisualModel->mColors,
+ mVisualModel->mColorIndices );
+
+ updated = true;
+ }
+
+ if( ( NULL != mEventData ) &&
+ mEventData->mPreEditFlag &&
+ ( 0u != mVisualModel->mCharactersToGlyph.Count() ) )
+ {
+ // Add the underline for the pre-edit text.
+ const GlyphIndex* const charactersToGlyphBuffer = mVisualModel->mCharactersToGlyph.Begin();
+ const Length* const glyphsPerCharacterBuffer = mVisualModel->mGlyphsPerCharacter.Begin();
+
+ const GlyphIndex glyphStart = *( charactersToGlyphBuffer + mEventData->mPreEditStartPosition );
+ const CharacterIndex lastPreEditCharacter = mEventData->mPreEditStartPosition + ( ( mEventData->mPreEditLength > 0u ) ? mEventData->mPreEditLength - 1u : 0u );
+ const Length numberOfGlyphsLastCharacter = *( glyphsPerCharacterBuffer + lastPreEditCharacter );
+ const GlyphIndex glyphEnd = *( charactersToGlyphBuffer + lastPreEditCharacter ) + ( numberOfGlyphsLastCharacter > 1u ? numberOfGlyphsLastCharacter - 1u : 0u );
+
+ GlyphRun underlineRun;
+ underlineRun.glyphIndex = glyphStart;
+ underlineRun.numberOfGlyphs = 1u + glyphEnd - glyphStart;
+
+ // TODO: At the moment the underline runs are only for pre-edit.
+ mVisualModel->mUnderlineRuns.PushBack( underlineRun );
+ }
+
+ // The estimated number of lines. Used to avoid reallocations when layouting.
+ mTextUpdateInfo.mEstimatedNumberOfLines = std::max( mVisualModel->mLines.Count(), mLogicalModel->mParagraphInfo.Count() );
+
+ // Set the previous number of characters for the next time the text is updated.
+ mTextUpdateInfo.mPreviousNumberOfCharacters = numberOfCharacters;
+
+ return updated;
+}
+
+void Controller::Impl::RetrieveDefaultInputStyle( InputStyle& inputStyle )
+{
+ // Sets the default text's color.
+ inputStyle.textColor = mTextColor;
+ inputStyle.isDefaultColor = true;
+
+ inputStyle.familyName.clear();
+ inputStyle.weight = TextAbstraction::FontWeight::NORMAL;
+ inputStyle.width = TextAbstraction::FontWidth::NORMAL;
+ inputStyle.slant = TextAbstraction::FontSlant::NORMAL;
+ inputStyle.size = 0.f;
+
+ inputStyle.familyDefined = false;
+ inputStyle.weightDefined = false;
+ inputStyle.widthDefined = false;
+ inputStyle.slantDefined = false;
+ inputStyle.sizeDefined = false;
+
+ // Sets the default font's family name, weight, width, slant and size.
+ if( mFontDefaults )
+ {
+ if( mFontDefaults->familyDefined )
+ {
+ inputStyle.familyName = mFontDefaults->mFontDescription.family;
+ inputStyle.familyDefined = true;
+ }
+
+ if( mFontDefaults->weightDefined )
+ {
+ inputStyle.weight = mFontDefaults->mFontDescription.weight;
+ inputStyle.weightDefined = true;
+ }
+
+ if( mFontDefaults->widthDefined )
+ {
+ inputStyle.width = mFontDefaults->mFontDescription.width;
+ inputStyle.widthDefined = true;
+ }
+
+ if( mFontDefaults->slantDefined )
+ {
+ inputStyle.slant = mFontDefaults->mFontDescription.slant;
+ inputStyle.slantDefined = true;
+ }
+
+ if( mFontDefaults->sizeDefined )
+ {
+ inputStyle.size = mFontDefaults->mDefaultPointSize;
+ inputStyle.sizeDefined = true;
+ }
+ }
+}
+
+float Controller::Impl::GetDefaultFontLineHeight()
+{
+ FontId defaultFontId = 0u;
+ if( NULL == mFontDefaults )
+ {
+ TextAbstraction::FontDescription fontDescription;
+ defaultFontId = mFontClient.GetFontId( fontDescription );
+ }
+ else
+ {
+ defaultFontId = mFontDefaults->GetFontId( mFontClient );
+ }
+
+ Text::FontMetrics fontMetrics;
+ mMetrics->GetFontMetrics( defaultFontId, fontMetrics );
+
+ return( fontMetrics.ascender - fontMetrics.descender );
+}
+
+void Controller::Impl::OnCursorKeyEvent( const Event& event )
+{
+ if( NULL == mEventData )
+ {
+ // Nothing to do if there is no text input.
+ return;
+ }
+
+ int keyCode = event.p1.mInt;
+
+ if( Dali::DALI_KEY_CURSOR_LEFT == keyCode )
+ {
+ if( mEventData->mPrimaryCursorPosition > 0u )
+ {
+ mEventData->mPrimaryCursorPosition = CalculateNewCursorIndex( mEventData->mPrimaryCursorPosition - 1u );
+ }
+ }
+ else if( Dali::DALI_KEY_CURSOR_RIGHT == keyCode )
+ {
+ if( mLogicalModel->mText.Count() > mEventData->mPrimaryCursorPosition )
+ {
+ mEventData->mPrimaryCursorPosition = CalculateNewCursorIndex( mEventData->mPrimaryCursorPosition );
+ }
+ }
+ else if( Dali::DALI_KEY_CURSOR_UP == keyCode )
+ {
+ // TODO
+ }
+ else if( Dali::DALI_KEY_CURSOR_DOWN == keyCode )
+ {
+ // TODO
+ }
+
+ mEventData->mUpdateCursorPosition = true;
+ mEventData->mUpdateInputStyle = true;
+ mEventData->mScrollAfterUpdatePosition = true;
+}
+
+void Controller::Impl::OnTapEvent( const Event& event )
+{
+ if( NULL != mEventData )
+ {
+ const unsigned int tapCount = event.p1.mUint;
+
+ if( 1u == tapCount )
+ {
+ if( IsShowingRealText() )
+ {
+ const float xPosition = event.p2.mFloat - mEventData->mScrollPosition.x - mAlignmentOffset.x;
+ const float yPosition = event.p3.mFloat - mEventData->mScrollPosition.y - mAlignmentOffset.y;
+
+ mEventData->mPrimaryCursorPosition = GetClosestCursorIndex( xPosition,
+ yPosition );
+
+ // When the cursor position is changing, delay cursor blinking
+ mEventData->mDecorator->DelayCursorBlink();
+ }
+ else
+ {
+ mEventData->mPrimaryCursorPosition = 0u;
+ }
+
+ mEventData->mUpdateCursorPosition = true;
+ mEventData->mScrollAfterUpdatePosition = true;
+ mEventData->mUpdateInputStyle = true;
+
+ // Notify the cursor position to the imf manager.
+ if( mEventData->mImfManager )
+ {
+ mEventData->mImfManager.SetCursorPosition( mEventData->mPrimaryCursorPosition );
+ mEventData->mImfManager.NotifyCursorPosition();
+ }
+ }
+ }
+}
+
+void Controller::Impl::OnPanEvent( const Event& event )
+{
+ if( NULL == mEventData )
+ {
+ // Nothing to do if there is no text input.
+ return;
+ }
+
+ int state = event.p1.mInt;
+
+ if( Gesture::Started == state ||
+ Gesture::Continuing == state )
+ {
+ const Vector2& actualSize = mVisualModel->GetLayoutSize();
+ const Vector2 currentScroll = mEventData->mScrollPosition;
+
+ if( mEventData->mHorizontalScrollingEnabled )
+ {
+ const float displacementX = event.p2.mFloat;
+ mEventData->mScrollPosition.x += displacementX;
+
+ ClampHorizontalScroll( actualSize );
+ }
+
+ if( mEventData->mVerticalScrollingEnabled )
+ {
+ const float displacementY = event.p3.mFloat;
+ mEventData->mScrollPosition.y += displacementY;
+
+ ClampVerticalScroll( actualSize );
+ }
+
+ if( mEventData->mDecorator )
+ {
+ mEventData->mDecorator->UpdatePositions( mEventData->mScrollPosition - currentScroll );
+ }
+ }
+}
+
+void Controller::Impl::OnLongPressEvent( const Event& event )
+{
+ DALI_LOG_INFO( gLogFilter, Debug::General, "Controller::OnLongPressEvent\n" );
+
+ if( EventData::EDITING == mEventData->mState )
+ {
+ ChangeState ( EventData::EDITING_WITH_POPUP );
+ mEventData->mDecoratorUpdated = true;
+ }
+}
+
+void Controller::Impl::OnHandleEvent( const Event& event )
+{
+ if( NULL == mEventData )
+ {
+ // Nothing to do if there is no text input.
+ return;
+ }
+
+ const unsigned int state = event.p1.mUint;
+ const bool handleStopScrolling = ( HANDLE_STOP_SCROLLING == state );
+
+ if( HANDLE_PRESSED == state )
+ {
+ // The event.p2 and event.p3 are in decorator coords. Need to transforms to text coords.
+ const float xPosition = event.p2.mFloat - mEventData->mScrollPosition.x - mAlignmentOffset.x;
+ const float yPosition = event.p3.mFloat - mEventData->mScrollPosition.y - mAlignmentOffset.y;
+
+ const CharacterIndex handleNewPosition = GetClosestCursorIndex( xPosition, yPosition );
+
+ if( Event::GRAB_HANDLE_EVENT == event.type )
+ {
+ ChangeState ( EventData::GRAB_HANDLE_PANNING );
+
+ if( handleNewPosition != mEventData->mPrimaryCursorPosition )
+ {
+ mEventData->mPrimaryCursorPosition = handleNewPosition;
+ mEventData->mUpdateCursorPosition = true;
+ }
+ }
+ else if( Event::LEFT_SELECTION_HANDLE_EVENT == event.type )
+ {
+ ChangeState ( EventData::SELECTION_HANDLE_PANNING );
+
+ if( ( handleNewPosition != mEventData->mLeftSelectionPosition ) &&
+ ( handleNewPosition != mEventData->mRightSelectionPosition ) )
+ {
+ mEventData->mLeftSelectionPosition = handleNewPosition;
+
+ mEventData->mUpdateLeftSelectionPosition = true;
+ }
+ }
+ else if( Event::RIGHT_SELECTION_HANDLE_EVENT == event.type )
+ {
+ ChangeState ( EventData::SELECTION_HANDLE_PANNING );
+
+ if( ( handleNewPosition != mEventData->mRightSelectionPosition ) &&
+ ( handleNewPosition != mEventData->mLeftSelectionPosition ) )
+ {
+ mEventData->mRightSelectionPosition = handleNewPosition;
+
+ mEventData->mUpdateRightSelectionPosition = true;
+ }
+ }
+ } // end ( HANDLE_PRESSED == state )
+ else if( ( HANDLE_RELEASED == state ) ||
+ handleStopScrolling )
+ {
+ CharacterIndex handlePosition = 0u;
+ if( handleStopScrolling )
+ {
+ // The event.p2 and event.p3 are in decorator coords. Need to transforms to text coords.
+ const float xPosition = event.p2.mFloat - mEventData->mScrollPosition.x - mAlignmentOffset.x;
+ const float yPosition = event.p3.mFloat - mEventData->mScrollPosition.y - mAlignmentOffset.y;
+
+ handlePosition = GetClosestCursorIndex( xPosition, yPosition );
+ }
+
+ if( Event::GRAB_HANDLE_EVENT == event.type )
+ {
+ mEventData->mUpdateCursorPosition = true;
+ mEventData->mUpdateInputStyle = true;
+
+ if( !IsClipboardEmpty() )
+ {
+ ChangeState( EventData::EDITING_WITH_PASTE_POPUP ); // Moving grabhandle will show Paste Popup
+ }
+
+ if( handleStopScrolling )
+ {
+ mEventData->mScrollAfterUpdatePosition = mEventData->mPrimaryCursorPosition != handlePosition;
+ mEventData->mPrimaryCursorPosition = handlePosition;
+ }
+ }
+ else if( Event::LEFT_SELECTION_HANDLE_EVENT == event.type )
+ {
+ ChangeState( EventData::SELECTING );
+
+ if( handleStopScrolling )
+ {
+ mEventData->mUpdateLeftSelectionPosition = ( mEventData->mRightSelectionPosition != handlePosition );
+ mEventData->mScrollAfterUpdatePosition = mEventData->mUpdateLeftSelectionPosition;
+
+ if( mEventData->mUpdateLeftSelectionPosition )
+ {
+ mEventData->mLeftSelectionPosition = handlePosition;
+ }
+ }
+ }
+ else if( Event::RIGHT_SELECTION_HANDLE_EVENT == event.type )
+ {
+ ChangeState( EventData::SELECTING );
+
+ if( handleStopScrolling )
+ {
+ mEventData->mUpdateRightSelectionPosition = ( mEventData->mLeftSelectionPosition != handlePosition );
+ mEventData->mScrollAfterUpdatePosition = mEventData->mUpdateRightSelectionPosition;
+ if( mEventData->mUpdateRightSelectionPosition )
+ {
+ mEventData->mRightSelectionPosition = handlePosition;
+ }
+ }
+ }
+
+ mEventData->mDecoratorUpdated = true;
+ } // end ( ( HANDLE_RELEASED == state ) || ( HANDLE_STOP_SCROLLING == state ) )
+ else if( HANDLE_SCROLLING == state )
+ {
+ const float xSpeed = event.p2.mFloat;
+ const Vector2& actualSize = mVisualModel->GetLayoutSize();
+ const Vector2 currentScrollPosition = mEventData->mScrollPosition;
+
+ mEventData->mScrollPosition.x += xSpeed;
+
+ ClampHorizontalScroll( actualSize );
+
+ bool endOfScroll = false;
+ if( Vector2::ZERO == ( currentScrollPosition - mEventData->mScrollPosition ) )
+ {
+ // Notify the decorator there is no more text to scroll.
+ // The decorator won't send more scroll events.
+ mEventData->mDecorator->NotifyEndOfScroll();
+ // Still need to set the position of the handle.
+ endOfScroll = true;
+ }
+
+ // Set the position of the handle.
+ const bool scrollRightDirection = xSpeed > 0.f;
+ const bool leftSelectionHandleEvent = Event::LEFT_SELECTION_HANDLE_EVENT == event.type;
+ const bool rightSelectionHandleEvent = Event::RIGHT_SELECTION_HANDLE_EVENT == event.type;
+
+ if( Event::GRAB_HANDLE_EVENT == event.type )
+ {
+ ChangeState( EventData::GRAB_HANDLE_PANNING );
+
+ Vector2 position = mEventData->mDecorator->GetPosition( GRAB_HANDLE );
+
+ // Position the grag handle close to either the left or right edge.
+ position.x = scrollRightDirection ? 0.f : mVisualModel->mControlSize.width;
+
+ // Get the new handle position.
+ // The grab handle's position is in decorator coords. Need to transforms to text coords.
+ const CharacterIndex handlePosition = GetClosestCursorIndex( position.x - mEventData->mScrollPosition.x - mAlignmentOffset.x,
+ position.y - mEventData->mScrollPosition.y - mAlignmentOffset.y );
+
+ mEventData->mUpdateCursorPosition = mEventData->mPrimaryCursorPosition != handlePosition;
+ mEventData->mScrollAfterUpdatePosition = mEventData->mUpdateCursorPosition;
+ mEventData->mPrimaryCursorPosition = handlePosition;
+ mEventData->mUpdateInputStyle = mEventData->mUpdateCursorPosition;
+ }
+ else if( leftSelectionHandleEvent || rightSelectionHandleEvent )
+ {
+ // TODO: This is recalculating the selection box every time the text is scrolled with the selection handles.
+ // Think if something can be done to save power.
+
+ ChangeState( EventData::SELECTION_HANDLE_PANNING );
+
+ Vector2 position = mEventData->mDecorator->GetPosition( leftSelectionHandleEvent ? Text::LEFT_SELECTION_HANDLE : Text::RIGHT_SELECTION_HANDLE );
+
+ // Position the selection handle close to either the left or right edge.
+ position.x = scrollRightDirection ? 0.f : mVisualModel->mControlSize.width;
+
+ // Get the new handle position.
+ // The selection handle's position is in decorator coords. Need to transforms to text coords.
+ const CharacterIndex handlePosition = GetClosestCursorIndex( position.x - mEventData->mScrollPosition.x - mAlignmentOffset.x,
+ position.y - mEventData->mScrollPosition.y - mAlignmentOffset.y );
+
+ if( leftSelectionHandleEvent )
+ {
+ const bool differentHandles = ( mEventData->mLeftSelectionPosition != handlePosition ) && ( mEventData->mRightSelectionPosition != handlePosition );
+ mEventData->mUpdateLeftSelectionPosition = endOfScroll || differentHandles;
+ if( differentHandles )
+ {
+ mEventData->mLeftSelectionPosition = handlePosition;
+ }
+ }
+ else
+ {
+ const bool differentHandles = ( mEventData->mRightSelectionPosition != handlePosition ) && ( mEventData->mLeftSelectionPosition != handlePosition );
+ mEventData->mUpdateRightSelectionPosition = endOfScroll || differentHandles;
+ if( differentHandles )
+ {
+ mEventData->mRightSelectionPosition = handlePosition;
+ }
+ }
+
+ if( mEventData->mUpdateLeftSelectionPosition || mEventData->mUpdateRightSelectionPosition )
+ {
+ RepositionSelectionHandles();
+
+ mEventData->mScrollAfterUpdatePosition = true;
+ }
+ }
+ mEventData->mDecoratorUpdated = true;
+ } // end ( HANDLE_SCROLLING == state )
+}
+
+void Controller::Impl::OnSelectEvent( const Event& event )
+{
+ if( NULL == mEventData )
+ {
+ // Nothing to do if there is no text.
+ return;
+ }
+
+ if( mEventData->mSelectionEnabled )
+ {
+ // The event.p2 and event.p3 are in decorator coords. Need to transforms to text coords.
+ const float xPosition = event.p2.mFloat - mEventData->mScrollPosition.x - mAlignmentOffset.x;
+ const float yPosition = event.p3.mFloat - mEventData->mScrollPosition.y - mAlignmentOffset.y;
+
+ // Calculates the logical position from the x,y coords.
+ RepositionSelectionHandles( xPosition,
+ yPosition );
+
+ mEventData->mUpdateLeftSelectionPosition = true;
+ mEventData->mUpdateRightSelectionPosition = true;
+
+ mEventData->mScrollAfterUpdatePosition = ( mEventData->mLeftSelectionPosition != mEventData->mRightSelectionPosition );
+ }
+}
+
+void Controller::Impl::OnSelectAllEvent()
+{
+ DALI_LOG_INFO( gLogFilter, Debug::Verbose, "OnSelectAllEvent mEventData->mSelectionEnabled%s \n", mEventData->mSelectionEnabled?"true":"false");
+
+ if( NULL == mEventData )
+ {
+ // Nothing to do if there is no text.
+ return;
+ }
+
+ if( mEventData->mSelectionEnabled )
+ {
+ mEventData->mLeftSelectionPosition = 0u;
+ mEventData->mRightSelectionPosition = mLogicalModel->mText.Count();
+
+ mEventData->mScrollAfterUpdatePosition = true;
+ mEventData->mUpdateLeftSelectionPosition = true;
+ mEventData->mUpdateRightSelectionPosition = true;
+ }
+}
+
+void Controller::Impl::RetrieveSelection( std::string& selectedText, bool deleteAfterRetrieval )
+{
+ if( mEventData->mLeftSelectionPosition == mEventData->mRightSelectionPosition )
+ {
+ // Nothing to select if handles are in the same place.
+ selectedText.clear();
+ return;
+ }
+
+ const bool handlesCrossed = mEventData->mLeftSelectionPosition > mEventData->mRightSelectionPosition;
+
+ //Get start and end position of selection
+ const CharacterIndex startOfSelectedText = handlesCrossed ? mEventData->mRightSelectionPosition : mEventData->mLeftSelectionPosition;
+ const Length lengthOfSelectedText = ( handlesCrossed ? mEventData->mLeftSelectionPosition : mEventData->mRightSelectionPosition ) - startOfSelectedText;
+
+ Vector<Character>& utf32Characters = mLogicalModel->mText;
+ const Length numberOfCharacters = utf32Characters.Count();
+
+ // Validate the start and end selection points
+ if( ( startOfSelectedText + lengthOfSelectedText ) <= numberOfCharacters )
+ {
+ //Get text as a UTF8 string
+ Utf32ToUtf8( &utf32Characters[startOfSelectedText], lengthOfSelectedText, selectedText );
+
+ if( deleteAfterRetrieval ) // Only delete text if copied successfully
+ {
+ // Set as input style the style of the first deleted character.
+ mLogicalModel->RetrieveStyle( startOfSelectedText, mEventData->mInputStyle );
+
+ mLogicalModel->UpdateTextStyleRuns( startOfSelectedText, -static_cast<int>( lengthOfSelectedText ) );
+
+ // Mark the paragraphs to be updated.
+ mTextUpdateInfo.mCharacterIndex = startOfSelectedText;
+ mTextUpdateInfo.mNumberOfCharactersToRemove = lengthOfSelectedText;
+
+ // Delete text between handles
+ Vector<Character>::Iterator first = utf32Characters.Begin() + startOfSelectedText;
+ Vector<Character>::Iterator last = first + lengthOfSelectedText;
+ utf32Characters.Erase( first, last );
+
+ // Scroll after delete.
+ mEventData->mPrimaryCursorPosition = handlesCrossed ? mEventData->mRightSelectionPosition : mEventData->mLeftSelectionPosition;
+ mEventData->mScrollAfterDelete = true;
+ }
+ // Udpade the cursor position and the decorator.
+ // Scroll after the position is updated if is not scrolling after delete.
+ mEventData->mUpdateCursorPosition = true;
+ mEventData->mScrollAfterUpdatePosition = !mEventData->mScrollAfterDelete;
+ mEventData->mDecoratorUpdated = true;
+ }
+}
+
+void Controller::Impl::ShowClipboard()
+{
+ if( mClipboard )
+ {
+ mClipboard.ShowClipboard();
+ }
+}
+
+void Controller::Impl::HideClipboard()
+{
+ if( mClipboard && mClipboardHideEnabled )
+ {
+ mClipboard.HideClipboard();
+ }
+}
+
+void Controller::Impl::SetClipboardHideEnable(bool enable)
+{
+ mClipboardHideEnabled = enable;
+}
+
+bool Controller::Impl::CopyStringToClipboard( std::string& source )
+{
+ //Send string to clipboard
+ return ( mClipboard && mClipboard.SetItem( source ) );
+}
+
+void Controller::Impl::SendSelectionToClipboard( bool deleteAfterSending )
+{
+ std::string selectedText;
+ RetrieveSelection( selectedText, deleteAfterSending );
+ CopyStringToClipboard( selectedText );
+ ChangeState( EventData::EDITING );
+}
+
+void Controller::Impl::GetTextFromClipboard( unsigned int itemIndex, std::string& retrievedString )
+{
+ if ( mClipboard )
+ {
+ retrievedString = mClipboard.GetItem( itemIndex );
+ }
+}
+
+void Controller::Impl::RepositionSelectionHandles()
+{
+ CharacterIndex selectionStart = mEventData->mLeftSelectionPosition;
+ CharacterIndex selectionEnd = mEventData->mRightSelectionPosition;
+
+ if( selectionStart == selectionEnd )
+ {
+ // Nothing to select if handles are in the same place.
+ return;
+ }
+
+ mEventData->mDecorator->ClearHighlights();
+
+ const GlyphIndex* const charactersToGlyphBuffer = mVisualModel->mCharactersToGlyph.Begin();
+ const Length* const glyphsPerCharacterBuffer = mVisualModel->mGlyphsPerCharacter.Begin();
+ const GlyphInfo* const glyphsBuffer = mVisualModel->mGlyphs.Begin();
+ const Vector2* const positionsBuffer = mVisualModel->mGlyphPositions.Begin();
+ const Length* const charactersPerGlyphBuffer = mVisualModel->mCharactersPerGlyph.Begin();
+ const CharacterIndex* const glyphToCharacterBuffer = mVisualModel->mGlyphsToCharacters.Begin();
+ const CharacterDirection* const modelCharacterDirectionsBuffer = ( 0u != mLogicalModel->mCharacterDirections.Count() ) ? mLogicalModel->mCharacterDirections.Begin() : NULL;
+
+ // TODO: Better algorithm to create the highlight box.
+ // TODO: Multi-line.
+
+ // Get the height of the line.
+ const Vector<LineRun>& lines = mVisualModel->mLines;
+ const LineRun& firstLine = *lines.Begin();
+ const float height = firstLine.ascender + -firstLine.descender;
+
+ const bool isLastCharacter = selectionEnd >= mLogicalModel->mText.Count();
+ const bool startDirection = ( ( NULL == modelCharacterDirectionsBuffer ) ? false : *( modelCharacterDirectionsBuffer + selectionStart ) );
+ const bool endDirection = ( ( NULL == modelCharacterDirectionsBuffer ) ? false : *( modelCharacterDirectionsBuffer + ( selectionEnd - ( isLastCharacter ? 1u : 0u ) ) ) );
+
+ // Swap the indices if the start is greater than the end.
+ const bool indicesSwapped = selectionStart > selectionEnd;
+
+ // Tell the decorator to flip the selection handles if needed.
+ mEventData->mDecorator->SetSelectionHandleFlipState( indicesSwapped, startDirection, endDirection );
+
+ if( indicesSwapped )
+ {
+ std::swap( selectionStart, selectionEnd );
+ }
+
+ // Get the indices to the first and last selected glyphs.
+ const CharacterIndex selectionEndMinusOne = selectionEnd - 1u;
+ const GlyphIndex glyphStart = *( charactersToGlyphBuffer + selectionStart );
+ const Length numberOfGlyphs = *( glyphsPerCharacterBuffer + selectionEndMinusOne );
+ const GlyphIndex glyphEnd = *( charactersToGlyphBuffer + selectionEndMinusOne ) + ( ( numberOfGlyphs > 0 ) ? numberOfGlyphs - 1u : 0u );
+
+ // Check if the first glyph is a ligature that must be broken like Latin ff, fi, or Arabic ﻻ, etc which needs special code.
+ const Length numberOfCharactersStart = *( charactersPerGlyphBuffer + glyphStart );
+ bool splitStartGlyph = ( numberOfCharactersStart > 1u ) && HasLigatureMustBreak( mLogicalModel->GetScript( selectionStart ) );
+
+ // Check if the last glyph is a ligature that must be broken like Latin ff, fi, or Arabic ﻻ, etc which needs special code.
+ const Length numberOfCharactersEnd = *( charactersPerGlyphBuffer + glyphEnd );
+ bool splitEndGlyph = ( glyphStart != glyphEnd ) && ( numberOfCharactersEnd > 1u ) && HasLigatureMustBreak( mLogicalModel->GetScript( selectionEndMinusOne ) );
+
+ const Vector2 offset = mEventData->mScrollPosition + mAlignmentOffset;
+
+ // Traverse the glyphs.
+ for( GlyphIndex index = glyphStart; index <= glyphEnd; ++index )
+ {
+ const GlyphInfo& glyph = *( glyphsBuffer + index );
+ const Vector2& position = *( positionsBuffer + index );
+
+ if( splitStartGlyph )
+ {
+ // If the first glyph is a ligature that must be broken it may be needed to add only part of the glyph to the highlight box.
+
+ const float glyphAdvance = glyph.advance / static_cast<float>( numberOfCharactersStart );
+ const CharacterIndex interGlyphIndex = selectionStart - *( glyphToCharacterBuffer + glyphStart );
+ // Get the direction of the character.
+ CharacterDirection isCurrentRightToLeft = false;
+ if( NULL != modelCharacterDirectionsBuffer ) // If modelCharacterDirectionsBuffer is NULL, it means the whole text is left to right.
+ {
+ isCurrentRightToLeft = *( modelCharacterDirectionsBuffer + selectionStart );
+ }
+
+ // The end point could be in the middle of the ligature.
+ // Calculate the number of characters selected.
+ const Length numberOfCharacters = ( glyphStart == glyphEnd ) ? ( selectionEnd - selectionStart ) : ( numberOfCharactersStart - interGlyphIndex );
+
+ const float xPosition = position.x - glyph.xBearing + offset.x + glyphAdvance * static_cast<float>( isCurrentRightToLeft ? ( numberOfCharactersStart - interGlyphIndex - numberOfCharacters ) : interGlyphIndex );
+
+ mEventData->mDecorator->AddHighlight( xPosition,
+ offset.y,
+ xPosition + static_cast<float>( numberOfCharacters ) * glyphAdvance,
+ offset.y + height );
+
+ splitStartGlyph = false;
+ continue;
+ }
+
+ if( splitEndGlyph && ( index == glyphEnd ) )
+ {
+ // Equally, if the last glyph is a ligature that must be broken it may be needed to add only part of the glyph to the highlight box.
+
+ const float glyphAdvance = glyph.advance / static_cast<float>( numberOfCharactersEnd );
+ const CharacterIndex interGlyphIndex = selectionEnd - *( glyphToCharacterBuffer + glyphEnd );
+ // Get the direction of the character.
+ CharacterDirection isCurrentRightToLeft = false;
+ if( NULL != modelCharacterDirectionsBuffer ) // If modelCharacterDirectionsBuffer is NULL, it means the whole text is left to right.
+ {
+ isCurrentRightToLeft = *( modelCharacterDirectionsBuffer + selectionEnd );
+ }
+
+ const Length numberOfCharacters = numberOfCharactersEnd - interGlyphIndex;
+
+ const float xPosition = position.x - glyph.xBearing + offset.x + ( isCurrentRightToLeft ? ( glyphAdvance * static_cast<float>( numberOfCharacters ) ) : 0.f );
+ mEventData->mDecorator->AddHighlight( xPosition,
+ offset.y,
+ xPosition + static_cast<float>( interGlyphIndex ) * glyphAdvance,
+ offset.y + height );
+
+ splitEndGlyph = false;
+ continue;
+ }
+
+ const float xPosition = position.x - glyph.xBearing + offset.x;
+ mEventData->mDecorator->AddHighlight( xPosition,
+ offset.y,
+ xPosition + glyph.advance,
+ offset.y + height );
+ }
+
+ CursorInfo primaryCursorInfo;
+ GetCursorPosition( mEventData->mLeftSelectionPosition,
+ primaryCursorInfo );
+
+ CursorInfo secondaryCursorInfo;
+ GetCursorPosition( mEventData->mRightSelectionPosition,
+ secondaryCursorInfo );
+
+ const Vector2 primaryPosition = primaryCursorInfo.primaryPosition + offset;
+ const Vector2 secondaryPosition = secondaryCursorInfo.primaryPosition + offset;
+
+ mEventData->mDecorator->SetPosition( LEFT_SELECTION_HANDLE,
+ primaryPosition.x,
+ primaryCursorInfo.lineOffset + offset.y,
+ primaryCursorInfo.lineHeight );
+
+ mEventData->mDecorator->SetPosition( RIGHT_SELECTION_HANDLE,
+ secondaryPosition.x,
+ secondaryCursorInfo.lineOffset + offset.y,
+ secondaryCursorInfo.lineHeight );
+
+ // Cursor to be positioned at end of selection so if selection interrupted and edit mode restarted the cursor will be at end of selection
+ mEventData->mPrimaryCursorPosition = ( indicesSwapped ) ? mEventData->mLeftSelectionPosition : mEventData->mRightSelectionPosition;
+
+ // Set the flag to update the decorator.
+ mEventData->mDecoratorUpdated = true;
+}
+
+void Controller::Impl::RepositionSelectionHandles( float visualX, float visualY )
+{
+ if( NULL == mEventData )
+ {
+ // Nothing to do if there is no text input.
+ return;
+ }
+
+ if( IsShowingPlaceholderText() )
+ {
+ // Nothing to do if there is the place-holder text.
+ return;
+ }
+
+ const Length numberOfGlyphs = mVisualModel->mGlyphs.Count();
+ const Length numberOfLines = mVisualModel->mLines.Count();
+ if( ( 0 == numberOfGlyphs ) ||
+ ( 0 == numberOfLines ) )
+ {
+ // Nothing to do if there is no text.
+ return;
+ }
+
+ // Find which word was selected
+ CharacterIndex selectionStart( 0 );
+ CharacterIndex selectionEnd( 0 );
+ FindSelectionIndices( visualX, visualY, selectionStart, selectionEnd );
+ DALI_LOG_INFO( gLogFilter, Debug::Verbose, "%p selectionStart %d selectionEnd %d\n", this, selectionStart, selectionEnd );
+
+ if( selectionStart == selectionEnd )
+ {
+ ChangeState( EventData::EDITING );
+ // Nothing to select. i.e. a white space, out of bounds
+ return;
+ }
+
+ mEventData->mLeftSelectionPosition = selectionStart;
+ mEventData->mRightSelectionPosition = selectionEnd;
+}
+
+void Controller::Impl::SetPopupButtons()
+{
+ /**
+ * Sets the Popup buttons to be shown depending on State.
+ *
+ * If SELECTING : CUT & COPY + ( PASTE & CLIPBOARD if content available to paste )
+ *
+ * If EDITING_WITH_POPUP : SELECT & SELECT_ALL
+ */
+
+ TextSelectionPopup::Buttons buttonsToShow = TextSelectionPopup::NONE;
+
+ if( EventData::SELECTING == mEventData->mState )
+ {
+ buttonsToShow = TextSelectionPopup::Buttons( TextSelectionPopup::CUT | TextSelectionPopup::COPY );
+
+ if( !IsClipboardEmpty() )
+ {
+ buttonsToShow = TextSelectionPopup::Buttons ( ( buttonsToShow | TextSelectionPopup::PASTE ) );
+ buttonsToShow = TextSelectionPopup::Buttons ( ( buttonsToShow | TextSelectionPopup::CLIPBOARD ) );
+ }
+
+ if( !mEventData->mAllTextSelected )
+ {
+ buttonsToShow = TextSelectionPopup::Buttons ( ( buttonsToShow | TextSelectionPopup::SELECT_ALL ) );
+ }
+ }
+ else if( EventData::EDITING_WITH_POPUP == mEventData->mState )
+ {
+ if( mLogicalModel->mText.Count() && !IsShowingPlaceholderText() )
+ {
+ buttonsToShow = TextSelectionPopup::Buttons( TextSelectionPopup::SELECT | TextSelectionPopup::SELECT_ALL );
+ }
+
+ if( !IsClipboardEmpty() )
+ {
+ buttonsToShow = TextSelectionPopup::Buttons ( ( buttonsToShow | TextSelectionPopup::PASTE ) );
+ buttonsToShow = TextSelectionPopup::Buttons ( ( buttonsToShow | TextSelectionPopup::CLIPBOARD ) );
+ }
+ }
+ else if( EventData::EDITING_WITH_PASTE_POPUP == mEventData->mState )
+ {
+ if ( !IsClipboardEmpty() )
+ {
+ buttonsToShow = TextSelectionPopup::Buttons ( ( buttonsToShow | TextSelectionPopup::PASTE ) );
+ buttonsToShow = TextSelectionPopup::Buttons ( ( buttonsToShow | TextSelectionPopup::CLIPBOARD ) );
+ }
+ }
+
+ mEventData->mDecorator->SetEnabledPopupButtons( buttonsToShow );
+}
+
+void Controller::Impl::ChangeState( EventData::State newState )
+{
+ if( NULL == mEventData )
+ {
+ // Nothing to do if there is no text input.
+ return;
+ }
+
+ DALI_LOG_INFO( gLogFilter, Debug::General, "ChangeState state:%d newstate:%d\n", mEventData->mState, newState );
+
+ if( mEventData->mState != newState )
+ {
+ mEventData->mState = newState;
+
+ if( EventData::INACTIVE == mEventData->mState )
+ {
+ mEventData->mDecorator->SetActiveCursor( ACTIVE_CURSOR_NONE );
+ mEventData->mDecorator->StopCursorBlink();
+ mEventData->mDecorator->SetHandleActive( GRAB_HANDLE, false );
+ mEventData->mDecorator->SetHandleActive( LEFT_SELECTION_HANDLE, false );
+ mEventData->mDecorator->SetHandleActive( RIGHT_SELECTION_HANDLE, false );
+ mEventData->mDecorator->SetPopupActive( false );
+ mEventData->mDecoratorUpdated = true;
+ HideClipboard();
+ }
+ else if( EventData::INTERRUPTED == mEventData->mState)
+ {
+ mEventData->mDecorator->SetHandleActive( GRAB_HANDLE, false );
+ mEventData->mDecorator->SetHandleActive( LEFT_SELECTION_HANDLE, false );
+ mEventData->mDecorator->SetHandleActive( RIGHT_SELECTION_HANDLE, false );
+ mEventData->mDecorator->SetPopupActive( false );
+ mEventData->mDecoratorUpdated = true;
+ HideClipboard();
+ }
+ else if( EventData::SELECTING == mEventData->mState )
+ {
+ mEventData->mDecorator->SetActiveCursor( ACTIVE_CURSOR_NONE );
+ mEventData->mDecorator->StopCursorBlink();
+ mEventData->mDecorator->SetHandleActive( GRAB_HANDLE, false );
+ mEventData->mDecorator->SetHandleActive( LEFT_SELECTION_HANDLE, true );
+ mEventData->mDecorator->SetHandleActive( RIGHT_SELECTION_HANDLE, true );
+ if( mEventData->mGrabHandlePopupEnabled )
+ {
+ SetPopupButtons();
+ mEventData->mDecorator->SetPopupActive( true );
+ }
+ mEventData->mDecoratorUpdated = true;
+ }
+ else if( EventData::EDITING == mEventData->mState )
+ {
+ mEventData->mDecorator->SetActiveCursor( ACTIVE_CURSOR_PRIMARY );
+ if( mEventData->mCursorBlinkEnabled )
+ {
+ mEventData->mDecorator->StartCursorBlink();
+ }
+ // Grab handle is not shown until a tap is received whilst EDITING
+ mEventData->mDecorator->SetHandleActive( GRAB_HANDLE, false );
+ mEventData->mDecorator->SetHandleActive( LEFT_SELECTION_HANDLE, false );
+ mEventData->mDecorator->SetHandleActive( RIGHT_SELECTION_HANDLE, false );
+ if( mEventData->mGrabHandlePopupEnabled )
+ {
+ mEventData->mDecorator->SetPopupActive( false );
+ }