2 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <dali-toolkit/internal/controls/text-view/text-view-processor-helper-functions.h>
22 #include <dali-toolkit/internal/controls/text-view/text-view-processor-dbg.h>
33 namespace TextViewProcessor
36 void UpdateSize( Size& size1, const Size& size2, const SizeGrowType type )
42 size1.width += size2.width;
43 size1.height = std::max( size1.height, size2.height );
48 size1.width = std::max( size1.width, size2.width );
49 size1.height += size2.height;
55 TextSeparatorType GetTextSeparatorType( const Character& character )
57 // returns if the given character is a line separator '\n', a word separator ' ' or if is not a separator (any other character).
58 return ( character.IsNewLine() ? LineSeparator : ( character.IsWhiteSpace() ? WordSeparator : NoSeparator ) );
61 void ChooseFontFamilyName( MarkupProcessor::StyledText& text )
63 DALI_LOG_INFO( gTextViewProcessorLogFilter, Debug::General, "-->TextViewProcessor::ChooseFontFamilyName\n" );
64 DALI_LOG_INFO( gTextViewProcessorLogFilter, Debug::General, " input font name: [%s]\n", text.mStyle.GetFontName().c_str() );
66 bool userDefinedFontFamilyName = false;
68 // First check if there is a font defined in the style and it supports the given text.
69 if( !text.mStyle.GetFontName().empty() )
71 const FontParameters fontParams( text.mStyle.GetFontName(), text.mStyle.GetFontStyle() , text.mStyle.GetFontPointSize() );
72 const Font font = Font::New( fontParams );
74 if( !font.IsDefaultSystemFont() && font.AllGlyphsSupported( text.mText ) )
76 userDefinedFontFamilyName = true;
80 if( !userDefinedFontFamilyName )
82 const Font defaultSystemFont = Font::New();
84 // At this point no font is set or doesn't support the given text.
85 if( !defaultSystemFont.AllGlyphsSupported( text.mText ) )
87 // If the default system font doesn't support the given text,
88 // an appropiate font is selected.
89 text.mStyle.SetFontName( Font::GetFamilyForText( text.mText ) );
90 // @TODO Font::GetFamilyForText() should return font family and font style.
94 // All characters are supported with default font, so use it
95 text.mStyle.SetFontName( "" );
98 DALI_LOG_INFO( gTextViewProcessorLogFilter, Debug::General, " output font name: [%s]\n", text.mStyle.GetFontName().c_str() );
99 DALI_LOG_INFO( gTextViewProcessorLogFilter, Debug::General, "<--TextViewProcessor::ChooseFontFamilyName\n" );
102 void GetIndicesFromGlobalCharacterIndex( const std::size_t index,
103 const TextLayoutInfo& textLayoutInfo,
104 TextInfoIndices& indices )
106 // TODO : Check for mixed LTR and RTL.
109 indices = TextInfoIndices();
112 if( textLayoutInfo.mLinesLayoutInfo.empty() )
114 // Text is empty. All indices are 0.
118 std::size_t currentIndex = 0; // stores how many characters have been traversed.
120 // Traverse all lines, groups of words and words until global index is found.
122 for( LineLayoutInfoContainer::const_iterator lineIt = textLayoutInfo.mLinesLayoutInfo.begin(),
123 lineEndIt = textLayoutInfo.mLinesLayoutInfo.end();
124 ( !found ) && ( lineIt != lineEndIt );
125 ++lineIt, ++indices.mLineIndex )
127 const LineLayoutInfo& lineLayoutInfo( *lineIt );
129 if( currentIndex + lineLayoutInfo.mNumberOfCharacters > index )
131 // The character is in this line
132 for( WordGroupLayoutInfoContainer::const_iterator groupIt = lineLayoutInfo.mWordGroupsLayoutInfo.begin(),
133 groupEndIt = lineLayoutInfo.mWordGroupsLayoutInfo.end();
134 ( !found ) && ( groupIt != groupEndIt );
135 ++groupIt, ++indices.mGroupIndex )
137 const WordGroupLayoutInfo& wordGroupLayoutInfo( *groupIt );
139 if( currentIndex + wordGroupLayoutInfo.mNumberOfCharacters > index )
141 // The character is in this group of words.
142 for( WordLayoutInfoContainer::const_iterator wordIt = wordGroupLayoutInfo.mWordsLayoutInfo.begin(),
143 wordEndIt = wordGroupLayoutInfo.mWordsLayoutInfo.end();
144 ( !found ) && ( wordIt != wordEndIt );
145 ++wordIt, ++indices.mWordIndex )
147 const WordLayoutInfo& wordLayoutInfo( *wordIt );
149 if( currentIndex + wordLayoutInfo.mCharactersLayoutInfo.size() > index )
151 // The character is in this word
152 indices.mCharacterIndex = index - currentIndex;
157 // check in the next word.
158 currentIndex += wordLayoutInfo.mCharactersLayoutInfo.size();
161 if( !wordGroupLayoutInfo.mWordsLayoutInfo.empty() )
163 --indices.mWordIndex;
168 // check in the next group of words
169 currentIndex += wordGroupLayoutInfo.mNumberOfCharacters;
171 } // end groups of words.
172 if( !lineLayoutInfo.mWordGroupsLayoutInfo.empty() )
174 --indices.mGroupIndex;
179 // check in the next line
180 currentIndex += lineLayoutInfo.mNumberOfCharacters;
184 // Need to decrease indices as they have been increased in the last loop.
185 if( !textLayoutInfo.mLinesLayoutInfo.empty() )
187 --indices.mLineIndex;
191 void ClearText( std::vector<TextActor>& textActors )
193 for( std::vector<TextActor>::iterator it = textActors.begin(), endIt = textActors.end(); it != endIt; ++it )
195 (*it).SetText( std::string( "" ) );
199 } //namespace TextViewProcessor
201 } //namespace Internal
203 } //namespace Toolkit