+ 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();
+ }
+ else
+ {
+ 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 : 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;
+ }
+ 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 : 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 )
+ {
+ mEventData->mUpdateLeftSelectionPosition = handlePosition != mEventData->mLeftSelectionPosition;
+ mEventData->mLeftSelectionPosition = handlePosition;
+ }
+ else
+ {
+ mEventData->mUpdateRightSelectionPosition = handlePosition != mEventData->mRightSelectionPosition;
+ mEventData->mRightSelectionPosition = handlePosition;
+ }
+
+ if( mEventData->mUpdateLeftSelectionPosition || mEventData->mUpdateRightSelectionPosition )
+ {
+ RepositionSelectionHandles( mEventData->mLeftSelectionPosition,
+ mEventData->mRightSelectionPosition );
+
+ 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;
+
+ const CharacterIndex leftPosition = mEventData->mLeftSelectionPosition;
+ const CharacterIndex rightPosition = mEventData->mRightSelectionPosition;
+
+ RepositionSelectionHandles( xPosition,
+ yPosition );
+
+ mEventData->mUpdateLeftSelectionPosition = leftPosition != mEventData->mLeftSelectionPosition;
+ mEventData->mUpdateRightSelectionPosition = rightPosition != mEventData->mRightSelectionPosition;
+
+ mEventData->mScrollAfterUpdatePosition = ( ( mEventData->mUpdateLeftSelectionPosition || mEventData->mUpdateRightSelectionPosition ) &&
+ ( mEventData->mLeftSelectionPosition != mEventData->mRightSelectionPosition ) );
+ }
+}
+
+void Controller::Impl::OnSelectAllEvent()
+{
+ if( NULL == mEventData )
+ {
+ // Nothing to do if there is no text.
+ return;
+ }
+
+ if( mEventData->mSelectionEnabled )
+ {
+ RepositionSelectionHandles( 0u,
+ mLogicalModel->mText.Count() );
+
+ mEventData->mScrollAfterUpdatePosition = true;
+ mEventData->mUpdateLeftSelectionPosition = true;
+ mEventData->mUpdateRightSelectionPosition = true;
+ }
+}
+
+void Controller::Impl::RetrieveSelection( std::string& selectedText, bool deleteAfterRetreival )
+{
+ if( mEventData->mLeftSelectionPosition == mEventData->mRightSelectionPosition )
+ {
+ // Nothing to select if handles are in the same place.
+ selectedText="";
+ return;
+ }
+
+ //Get start and end position of selection
+ uint32_t startOfSelectedText = mEventData->mLeftSelectionPosition;
+ uint32_t lengthOfSelectedText = mEventData->mRightSelectionPosition - startOfSelectedText;
+
+ // Validate the start and end selection points
+ if( ( startOfSelectedText >= 0 ) && ( ( startOfSelectedText + lengthOfSelectedText ) <= mLogicalModel->mText.Count() ) )
+ {
+ //Get text as a UTF8 string
+ Vector<Character>& utf32Characters = mLogicalModel->mText;
+
+ Utf32ToUtf8( &utf32Characters[startOfSelectedText], lengthOfSelectedText, selectedText );
+
+ if ( deleteAfterRetreival ) // Only delete text if copied successfully
+ {
+ // Delete text between handles
+ Vector<Character>& currentText = mLogicalModel->mText;
+
+ Vector<Character>::Iterator first = currentText.Begin() + startOfSelectedText;
+ Vector<Character>::Iterator last = first + lengthOfSelectedText;
+ currentText.Erase( first, last );
+ }
+ mEventData->mPrimaryCursorPosition = mEventData->mLeftSelectionPosition;
+ mEventData->mScrollAfterDelete = true;
+ mEventData->mDecoratorUpdated = true;
+ }
+}
+
+void Controller::Impl::ShowClipboard()
+{
+ if ( mClipboard )
+ {
+ mClipboard.ShowClipboard();
+ }
+}
+
+void Controller::Impl::HideClipboard()
+{
+ if ( mClipboard )
+ {
+ mClipboard.HideClipboard();
+ }
+}
+
+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& retreivedString )
+{
+ if ( mClipboard )
+ {
+ retreivedString = mClipboard.GetItem( itemIndex );
+ }
+}
+
+void Controller::Impl::RepositionSelectionHandles( CharacterIndex selectionStart, CharacterIndex selectionEnd )
+{
+ if( selectionStart == selectionEnd )
+ {
+ // Nothing to select if handles are in the same place.
+ return;
+ }
+
+ mEventData->mDecorator->ClearHighlights();
+
+ mEventData->mLeftSelectionPosition = selectionStart;
+ mEventData->mRightSelectionPosition = selectionEnd;
+
+ 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();
+
+ // TODO: Better algorithm to create the highlight box.
+ // TODO: Multi-line.
+
+ const Vector<LineRun>& lines = mVisualModel->mLines;
+ const LineRun& firstLine = *lines.Begin();
+ const float height = firstLine.ascender + -firstLine.descender;
+
+ const bool indicesSwapped = ( selectionStart > selectionEnd );
+ if( indicesSwapped )
+ {
+ std::swap( selectionStart, selectionEnd );
+ }
+
+ GlyphIndex glyphStart = *( charactersToGlyphBuffer + selectionStart );
+ GlyphIndex glyphEnd = *( charactersToGlyphBuffer + ( selectionEnd - 1u ) ) + *( glyphsPerCharacterBuffer + ( selectionEnd - 1u ) ) - 1u;
+
+ mEventData->mDecorator->SwapSelectionHandlesEnabled( firstLine.direction != indicesSwapped );
+
+ const Vector2 offset = mEventData->mScrollPosition + mAlignmentOffset;
+
+ for( GlyphIndex index = glyphStart; index <= glyphEnd; ++index )
+ {
+ const GlyphInfo& glyph = *( glyphsBuffer + index );
+ const Vector2& position = *( positionsBuffer + index );
+
+ const float xPosition = position.x - glyph.xBearing + offset.x;
+ mEventData->mDecorator->AddHighlight( xPosition, offset.y, xPosition + glyph.advance, height );
projects / platform / core / uifw / dali-toolkit.git / blobdiff