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/split-by-new-line-char-policies.h>
22 #include <dali/integration-api/debug.h>
23 #include <dali-toolkit/internal/controls/text-view/relayout-utilities.h>
24 #include <dali-toolkit/internal/controls/text-view/text-view-processor.h>
35 namespace SplitByNewLineChar
41 Vector3 SplitPosition( const TextViewRelayout::RelayoutParameters& relayoutParameters,
42 const TextView::LayoutParameters& layoutParameters,
43 TextView::RelayoutData& relayoutData )
45 const float wordOffset = ( relayoutParameters.mIsFirstCharacter ? 0.f : relayoutParameters.mPositionOffset.x );
46 const float previousPositionY = ( relayoutParameters.mIsFirstCharacter ? 0.f : relayoutParameters.mPositionOffset.y );
48 if( relayoutParameters.mIsNewLine ||
49 relayoutParameters.mIsFirstCharacter ||
50 ( wordOffset + relayoutParameters.mCharacterSize.width > relayoutData.mTextViewSize.width ) )
52 if( !relayoutParameters.mIsNewLine &&
53 ( relayoutParameters.mIsWhiteSpace || relayoutParameters.mIsNewLineCharacter ) )
55 // Current character is a white space. Don't want to move a white space to the next line.
56 // These white spaces are placed just in the edge.
57 return Vector3( relayoutData.mTextViewSize.width - relayoutParameters.mWordSize.width, relayoutParameters.mPositionOffset.y, 0.f );
61 const TextViewProcessor::LineLayoutInfo& lineLayoutInfo( *( relayoutData.mTextLayoutInfo.mLinesLayoutInfo.begin() + relayoutParameters.mIndices.mLineIndex ) );
63 TextViewRelayout::SubLineLayoutInfo subLineInfo;
64 subLineInfo.mLineLength = 0.f;
65 subLineInfo.mMaxCharHeight = 0.f;
66 subLineInfo.mMaxAscender = 0.f;
67 TextViewRelayout::CalculateSubLineLayout( relayoutData.mTextViewSize.width,
68 relayoutParameters.mIndices,
70 TextViewRelayout::WrapByLineAndSplit,
74 // Stores some info to calculate the line justification in a post-process.
75 TextView::LineJustificationInfo justificationInfo;
77 justificationInfo.mIndices = relayoutParameters.mIndices;
78 justificationInfo.mLineLength = subLineInfo.mLineLength;
80 relayoutData.mLineJustificationInfo.push_back( justificationInfo );
82 Toolkit::TextView::LineLayoutInfo lineInfo;
83 lineInfo.mCharacterGlobalIndex = relayoutParameters.mCharacterGlobalIndex; // Index to the first character of the next line.
84 lineInfo.mSize = Size( subLineInfo.mLineLength, subLineInfo.mMaxCharHeight ); // Size of this piece of line.
85 lineInfo.mAscender = subLineInfo.mMaxAscender; // Ascender of this piece of line.
86 relayoutData.mLines.push_back( lineInfo );
88 return Vector3( 0.f, previousPositionY + subLineInfo.mMaxCharHeight + layoutParameters.mLineHeightOffset, 0.f );
93 return Vector3( wordOffset, previousPositionY, 0.f );
97 void CalculateSizeAndPosition( const TextView::LayoutParameters& layoutParameters,
98 TextView::RelayoutData& relayoutData )
101 relayoutData.mCharacterLayoutInfoTable.clear();
102 relayoutData.mLines.clear();
103 relayoutData.mTextSizeForRelayoutOption = Size();
104 relayoutData.mShrinkFactor = 1.f;
106 // Calculates the text size for split by char.
107 Vector4 minMaxXY( std::numeric_limits<float>::max(),
108 std::numeric_limits<float>::max(),
109 std::numeric_limits<float>::min(),
110 std::numeric_limits<float>::min() );
112 TextViewRelayout::RelayoutParameters relayoutParameters;
114 if( TextView::ShrinkOriginal == layoutParameters.mExceedPolicy )
116 if( relayoutData.mTextLayoutInfo.mWholeTextSize.width > relayoutData.mTextViewSize.width )
118 relayoutData.mShrinkFactor = relayoutData.mTextViewSize.width / relayoutData.mTextLayoutInfo.mWholeTextSize.width;
121 else if( TextView::Shrink == layoutParameters.mExceedPolicy )
123 if( ( relayoutData.mTextLayoutInfo.mWholeTextSize.width > relayoutData.mTextViewSize.width ) ||
124 ( relayoutData.mTextLayoutInfo.mWholeTextSize.height > relayoutData.mTextViewSize.height ) )
126 relayoutData.mShrinkFactor = std::min( relayoutData.mTextViewSize.width / relayoutData.mTextLayoutInfo.mWholeTextSize.width,
127 relayoutData.mTextViewSize.height / relayoutData.mTextLayoutInfo.mWholeTextSize.height );
131 relayoutParameters.mIsFirstCharacter = true;
132 relayoutParameters.mIndices.mLineIndex = 0;
133 relayoutParameters.mPositionOffset = Vector3::ZERO;
134 relayoutParameters.mCharacterGlobalIndex = 0;
136 for( TextViewProcessor::LineLayoutInfoContainer::iterator lineLayoutIt = relayoutData.mTextLayoutInfo.mLinesLayoutInfo.begin(),
137 endLineLayoutIt = relayoutData.mTextLayoutInfo.mLinesLayoutInfo.end();
138 lineLayoutIt != endLineLayoutIt;
139 ++lineLayoutIt, ++relayoutParameters.mIndices.mLineIndex )
141 TextViewProcessor::LineLayoutInfo& lineLayoutInfo( *lineLayoutIt );
143 relayoutParameters.mLineSize = lineLayoutInfo.mSize * relayoutData.mShrinkFactor;
145 relayoutParameters.mIsNewLine = true;
146 relayoutParameters.mIndices.mGroupIndex = 0;
148 for( TextViewProcessor::WordGroupLayoutInfoContainer::iterator groupLayoutIt = lineLayoutInfo.mWordGroupsLayoutInfo.begin(),
149 endGroupLayoutIt = lineLayoutInfo.mWordGroupsLayoutInfo.end();
150 groupLayoutIt != endGroupLayoutIt;
151 ++groupLayoutIt, ++relayoutParameters.mIndices.mGroupIndex )
153 TextViewProcessor::WordGroupLayoutInfo& wordGroupLayoutInfo( *groupLayoutIt );
155 relayoutParameters.mIndices.mWordIndex = 0;
157 for( TextViewProcessor::WordLayoutInfoContainer::iterator wordLayoutIt = wordGroupLayoutInfo.mWordsLayoutInfo.begin(),
158 endWordLayoutIt = wordGroupLayoutInfo.mWordsLayoutInfo.end();
159 wordLayoutIt != endWordLayoutIt;
160 ++wordLayoutIt, ++relayoutParameters.mIndices.mWordIndex )
162 TextViewProcessor::WordLayoutInfo& wordLayoutInfo( *wordLayoutIt );
163 relayoutParameters.mIsWhiteSpace = TextViewProcessor::WordSeparator == wordLayoutInfo.mType;
164 relayoutParameters.mIsNewLineCharacter = TextViewProcessor::LineSeparator == wordLayoutInfo.mType;
166 relayoutParameters.mIsFirstCharacterOfWord = true;
167 relayoutParameters.mWordSize = wordLayoutInfo.mSize;
168 relayoutParameters.mIndices.mCharacterIndex = 0;
170 if( relayoutParameters.mIsNewLine )
172 // Stores some info to calculate the line justification in a post-process.
173 const bool isSplitOriginal = layoutParameters.mExceedPolicy == TextView::SplitOriginal;
175 if( !isSplitOriginal )
177 TextView::LineJustificationInfo justificationInfo;
179 justificationInfo.mIndices = relayoutParameters.mIndices;
180 justificationInfo.mLineLength = relayoutParameters.mLineSize.width;
182 relayoutData.mLineJustificationInfo.push_back( justificationInfo );
186 for( TextViewProcessor::CharacterLayoutInfoContainer::iterator characterLayoutIt = wordLayoutInfo.mCharactersLayoutInfo.begin(),
187 endCharacterLayoutIt = wordLayoutInfo.mCharactersLayoutInfo.end();
188 characterLayoutIt != endCharacterLayoutIt;
189 ++characterLayoutIt, ++relayoutParameters.mIndices.mCharacterIndex )
191 TextViewProcessor::CharacterLayoutInfo& characterLayoutInfo( *characterLayoutIt );
192 relayoutParameters.mCharacterSize = characterLayoutInfo.mSize;
194 relayoutParameters.mCharacterSize = characterLayoutInfo.mSize;
196 switch( layoutParameters.mExceedPolicy )
198 case TextView::OriginalShrink:
199 case TextView::SplitShrink:
200 case TextView::ShrinkFade: // Fall Through
202 DALI_LOG_WARNING( "SplitByNewLineChar::CalculateSizeAndPosition() policy not implemented.\n" );
205 case TextView::Original: // Fall Through
206 case TextView::ShrinkOriginal: // Fall Through
207 case TextView::Shrink: // Fall Through
208 case TextView::OriginalFade: // Fall Through
209 case TextView::FadeOriginal: // Fall Through
210 case TextView::Fade: // Fall Through
211 case TextView::EllipsizeEndOriginal: // Fall Through
212 case TextView::EllipsizeEnd: // Fall Through
214 if( relayoutParameters.mIsNewLine )
216 relayoutParameters.mPositionOffset.x = 0.f;
217 relayoutParameters.mPositionOffset.y += lineLayoutInfo.mSize.height * relayoutData.mShrinkFactor;
220 characterLayoutInfo.mPosition = relayoutParameters.mPositionOffset;
222 relayoutParameters.mPositionOffset.x += characterLayoutInfo.mSize.width * relayoutData.mShrinkFactor;
224 if( relayoutParameters.mIsNewLine ||
225 relayoutParameters.mIsFirstCharacter )
227 Toolkit::TextView::LineLayoutInfo lineInfo;
228 lineInfo.mCharacterGlobalIndex = relayoutParameters.mCharacterGlobalIndex; // Index to the first character of the next line.
229 lineInfo.mSize = relayoutParameters.mLineSize; // Size of this piece of line.
230 lineInfo.mAscender = lineLayoutInfo.mAscender * relayoutData.mShrinkFactor; // Ascender of this piece of line.
231 relayoutData.mLines.push_back( lineInfo );
235 case TextView::SplitOriginal:
236 case TextView::SplitFade:
237 case TextView::SplitEllipsizeEnd: // Fall Through
239 characterLayoutInfo.mPosition = SplitPosition( relayoutParameters,
243 relayoutParameters.mPositionOffset = characterLayoutInfo.mPosition + Vector3( characterLayoutInfo.mSize.width, 0.f, 0.f );
248 DALI_LOG_WARNING( "SplitByNewLineChar::CalculateSizeAndPosition() Layout configuration not possible.\n" );
253 // Get last line info and calculate the bearing (used to align glyphs with the baseline).
254 TextViewRelayout::CalculateBearing( characterLayoutInfo, relayoutData );
256 // updates min and max position to calculate the text size for split by new line char.
257 TextViewRelayout::UpdateLayoutInfoTable( minMaxXY,
264 ++relayoutParameters.mCharacterGlobalIndex;
265 relayoutParameters.mIsFirstCharacter = false;
266 relayoutParameters.mIsNewLine = false;
269 } // end group of words
272 if( relayoutData.mCharacterLayoutInfoTable.empty() )
274 relayoutData.mTextSizeForRelayoutOption = Size();
278 relayoutData.mTextSizeForRelayoutOption.width = minMaxXY.z - minMaxXY.x;
279 relayoutData.mTextSizeForRelayoutOption.height = minMaxXY.w - minMaxXY.y;
282 // Check if the last character is a new line character. In that case the height should be added.
283 if( !relayoutData.mTextLayoutInfo.mLinesLayoutInfo.empty() )
285 const TextViewProcessor::LineLayoutInfo& lineLayoutInfo( *( relayoutData.mTextLayoutInfo.mLinesLayoutInfo.end() - 1 ) );
287 if( lineLayoutInfo.mWordGroupsLayoutInfo.empty() ) // if it's empty, it means the last character is a new line character.
289 relayoutData.mTextSizeForRelayoutOption.height += lineLayoutInfo.mSize.height * relayoutData.mShrinkFactor;
296 void Relayout( Actor textView,
297 TextView::RelayoutOperationMask relayoutOperationMask,
298 const TextView::LayoutParameters& layoutParameters,
299 const TextView::VisualParameters& visualParameters,
300 TextView::RelayoutData& relayoutData )
302 if( relayoutOperationMask & TextView::RELAYOUT_SIZE_POSITION )
304 relayoutData.mLineJustificationInfo.clear();
305 CalculateSizeAndPosition( layoutParameters,
308 TextViewRelayout::SetUnderlineInfo( relayoutData );
311 if( relayoutOperationMask & TextView::RELAYOUT_ALIGNMENT )
313 TextViewRelayout::UpdateAlignment( layoutParameters,
317 if( relayoutOperationMask & TextView::RELAYOUT_VISIBILITY )
319 TextViewRelayout::UpdateVisibility( layoutParameters,
324 if( relayoutOperationMask & TextView::RELAYOUT_INITIALIZE_TEXT_ACTORS )
326 TextViewProcessor::InitializeTextActorInfo( relayoutData );
329 if( relayoutOperationMask & TextView::RELAYOUT_TEXT_ACTOR_UPDATE )
331 TextViewRelayout::UpdateTextActorInfo( visualParameters,
335 if( ( relayoutOperationMask & TextView::RELAYOUT_INSERT_TO_TEXT_VIEW ) ||
336 ( relayoutOperationMask & TextView::RELAYOUT_INSERT_TO_TEXT_ACTOR_LIST ) )
338 TextViewRelayout::InsertToTextView( relayoutOperationMask,
344 } // namespace SplitByNewLineChar
346 } // namespace Internal
348 } // namespace Toolkit