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.
20 #include "split-by-new-line-char-policies.h"
26 #include "relayout-utilities.h"
27 #include "text-view-processor.h"
28 #include <dali/integration-api/debug.h>
39 namespace SplitByNewLineChar
45 Vector3 SplitPosition( const TextViewRelayout::RelayoutParameters& relayoutParameters,
46 const TextView::LayoutParameters& layoutParameters,
47 TextView::RelayoutData& relayoutData )
49 const float wordOffset = ( relayoutParameters.mIsFirstCharacter ? 0.f : relayoutParameters.mPositionOffset.x );
50 const float previousPositionY = ( relayoutParameters.mIsFirstCharacter ? 0.f : relayoutParameters.mPositionOffset.y );
52 if( relayoutParameters.mIsNewLine ||
53 relayoutParameters.mIsFirstCharacter ||
54 ( wordOffset + relayoutParameters.mCharacterSize.width > relayoutData.mTextViewSize.width ) )
56 if( !relayoutParameters.mIsNewLine &&
57 ( relayoutParameters.mIsWhiteSpace || relayoutParameters.mIsNewLineCharacter ) )
59 // Current character is a white space. Don't want to move a white space to the next line.
60 // These white spaces are placed just in the edge.
61 return Vector3( relayoutData.mTextViewSize.width - relayoutParameters.mWordSize.width, relayoutParameters.mPositionOffset.y, 0.f );
65 const TextViewProcessor::LineLayoutInfo& lineLayoutInfo( *( relayoutData.mTextLayoutInfo.mLinesLayoutInfo.begin() + relayoutParameters.mIndices.mLineIndex ) );
67 TextViewRelayout::SubLineLayoutInfo subLineInfo;
68 subLineInfo.mLineLength = 0.f;
69 subLineInfo.mMaxCharHeight = 0.f;
70 subLineInfo.mMaxAscender = 0.f;
71 TextViewRelayout::CalculateSubLineLayout( relayoutData.mTextViewSize.width,
72 relayoutParameters.mIndices,
74 TextViewRelayout::WrapByLineAndSplit,
78 // Stores some info to calculate the line justification in a post-process.
79 TextView::LineJustificationInfo justificationInfo;
81 justificationInfo.mIndices = relayoutParameters.mIndices;
82 justificationInfo.mLineLength = subLineInfo.mLineLength;
84 relayoutData.mLineJustificationInfo.push_back( justificationInfo );
86 Toolkit::TextView::LineLayoutInfo lineInfo;
87 lineInfo.mCharacterGlobalIndex = relayoutParameters.mCharacterGlobalIndex; // Index to the first character of the next line.
88 lineInfo.mSize = Size( subLineInfo.mLineLength, subLineInfo.mMaxCharHeight ); // Size of this piece of line.
89 lineInfo.mAscender = subLineInfo.mMaxAscender; // Ascender of this piece of line.
90 relayoutData.mLines.push_back( lineInfo );
92 return Vector3( 0.f, previousPositionY + subLineInfo.mMaxCharHeight + layoutParameters.mLineHeightOffset, 0.f );
97 return Vector3( wordOffset, previousPositionY, 0.f );
101 void CalculateSizeAndPosition( const TextView::LayoutParameters& layoutParameters,
102 TextView::RelayoutData& relayoutData )
105 relayoutData.mCharacterLayoutInfoTable.clear();
106 relayoutData.mLines.clear();
107 relayoutData.mTextSizeForRelayoutOption = Size();
108 relayoutData.mShrinkFactor = 1.f;
110 // Calculates the text size for split by char.
111 Vector4 minMaxXY( std::numeric_limits<float>::max(),
112 std::numeric_limits<float>::max(),
113 std::numeric_limits<float>::min(),
114 std::numeric_limits<float>::min() );
116 TextViewRelayout::RelayoutParameters relayoutParameters;
118 if( TextView::ShrinkOriginal == layoutParameters.mExceedPolicy )
120 if( relayoutData.mTextLayoutInfo.mWholeTextSize.width > relayoutData.mTextViewSize.width )
122 relayoutData.mShrinkFactor = relayoutData.mTextViewSize.width / relayoutData.mTextLayoutInfo.mWholeTextSize.width;
125 else if( TextView::Shrink == layoutParameters.mExceedPolicy )
127 if( ( relayoutData.mTextLayoutInfo.mWholeTextSize.width > relayoutData.mTextViewSize.width ) ||
128 ( relayoutData.mTextLayoutInfo.mWholeTextSize.height > relayoutData.mTextViewSize.height ) )
130 relayoutData.mShrinkFactor = std::min( relayoutData.mTextViewSize.width / relayoutData.mTextLayoutInfo.mWholeTextSize.width,
131 relayoutData.mTextViewSize.height / relayoutData.mTextLayoutInfo.mWholeTextSize.height );
135 relayoutParameters.mIsFirstCharacter = true;
136 relayoutParameters.mIndices.mLineIndex = 0;
137 relayoutParameters.mPositionOffset = Vector3::ZERO;
138 relayoutParameters.mCharacterGlobalIndex = 0;
140 for( TextViewProcessor::LineLayoutInfoContainer::iterator lineLayoutIt = relayoutData.mTextLayoutInfo.mLinesLayoutInfo.begin(),
141 endLineLayoutIt = relayoutData.mTextLayoutInfo.mLinesLayoutInfo.end();
142 lineLayoutIt != endLineLayoutIt;
143 ++lineLayoutIt, ++relayoutParameters.mIndices.mLineIndex )
145 TextViewProcessor::LineLayoutInfo& lineLayoutInfo( *lineLayoutIt );
147 relayoutParameters.mLineSize = lineLayoutInfo.mSize * relayoutData.mShrinkFactor;
149 relayoutParameters.mIsNewLine = true;
150 relayoutParameters.mIndices.mGroupIndex = 0;
152 for( TextViewProcessor::WordGroupLayoutInfoContainer::iterator groupLayoutIt = lineLayoutInfo.mWordGroupsLayoutInfo.begin(),
153 endGroupLayoutIt = lineLayoutInfo.mWordGroupsLayoutInfo.end();
154 groupLayoutIt != endGroupLayoutIt;
155 ++groupLayoutIt, ++relayoutParameters.mIndices.mGroupIndex )
157 TextViewProcessor::WordGroupLayoutInfo& wordGroupLayoutInfo( *groupLayoutIt );
159 relayoutParameters.mIndices.mWordIndex = 0;
161 for( TextViewProcessor::WordLayoutInfoContainer::iterator wordLayoutIt = wordGroupLayoutInfo.mWordsLayoutInfo.begin(),
162 endWordLayoutIt = wordGroupLayoutInfo.mWordsLayoutInfo.end();
163 wordLayoutIt != endWordLayoutIt;
164 ++wordLayoutIt, ++relayoutParameters.mIndices.mWordIndex )
166 TextViewProcessor::WordLayoutInfo& wordLayoutInfo( *wordLayoutIt );
167 relayoutParameters.mIsWhiteSpace = TextViewProcessor::WordSeparator == wordLayoutInfo.mType;
168 relayoutParameters.mIsNewLineCharacter = TextViewProcessor::LineSeparator == wordLayoutInfo.mType;
170 relayoutParameters.mIsFirstCharacterOfWord = true;
171 relayoutParameters.mWordSize = wordLayoutInfo.mSize;
172 relayoutParameters.mIndices.mCharacterIndex = 0;
174 if( relayoutParameters.mIsNewLine )
176 // Stores some info to calculate the line justification in a post-process.
177 const bool isSplitOriginal = layoutParameters.mExceedPolicy == TextView::SplitOriginal;
179 if( !isSplitOriginal )
181 TextView::LineJustificationInfo justificationInfo;
183 justificationInfo.mIndices = relayoutParameters.mIndices;
184 justificationInfo.mLineLength = relayoutParameters.mLineSize.width;
186 relayoutData.mLineJustificationInfo.push_back( justificationInfo );
190 for( TextViewProcessor::CharacterLayoutInfoContainer::iterator characterLayoutIt = wordLayoutInfo.mCharactersLayoutInfo.begin(),
191 endCharacterLayoutIt = wordLayoutInfo.mCharactersLayoutInfo.end();
192 characterLayoutIt != endCharacterLayoutIt;
193 ++characterLayoutIt, ++relayoutParameters.mIndices.mCharacterIndex )
195 TextViewProcessor::CharacterLayoutInfo& characterLayoutInfo( *characterLayoutIt );
196 relayoutParameters.mCharacterSize = characterLayoutInfo.mSize;
198 relayoutParameters.mCharacterSize = characterLayoutInfo.mSize;
200 switch( layoutParameters.mExceedPolicy )
202 case TextView::OriginalShrink:
203 case TextView::SplitShrink:
204 case TextView::ShrinkFade: // Fall Through
206 DALI_LOG_WARNING( "SplitByNewLineChar::CalculateSizeAndPosition() policy not implemented.\n" );
209 case TextView::Original: // Fall Through
210 case TextView::ShrinkOriginal: // Fall Through
211 case TextView::Shrink: // Fall Through
212 case TextView::OriginalFade: // Fall Through
213 case TextView::FadeOriginal: // Fall Through
214 case TextView::Fade: // Fall Through
215 case TextView::EllipsizeEndOriginal: // Fall Through
216 case TextView::EllipsizeEnd: // Fall Through
218 if( relayoutParameters.mIsNewLine )
220 relayoutParameters.mPositionOffset.x = 0.f;
221 relayoutParameters.mPositionOffset.y += lineLayoutInfo.mSize.height * relayoutData.mShrinkFactor;
224 characterLayoutInfo.mPosition = relayoutParameters.mPositionOffset;
226 relayoutParameters.mPositionOffset.x += characterLayoutInfo.mSize.width * relayoutData.mShrinkFactor;
228 if( relayoutParameters.mIsNewLine ||
229 relayoutParameters.mIsFirstCharacter )
231 Toolkit::TextView::LineLayoutInfo lineInfo;
232 lineInfo.mCharacterGlobalIndex = relayoutParameters.mCharacterGlobalIndex; // Index to the first character of the next line.
233 lineInfo.mSize = relayoutParameters.mLineSize; // Size of this piece of line.
234 lineInfo.mAscender = lineLayoutInfo.mAscender * relayoutData.mShrinkFactor; // Ascender of this piece of line.
235 relayoutData.mLines.push_back( lineInfo );
239 case TextView::SplitOriginal:
240 case TextView::SplitFade: // Fall Through
242 characterLayoutInfo.mPosition = SplitPosition( relayoutParameters,
246 relayoutParameters.mPositionOffset = characterLayoutInfo.mPosition + Vector3( characterLayoutInfo.mSize.width, 0.f, 0.f );
251 DALI_LOG_WARNING( "SplitByNewLineChar::CalculateSizeAndPosition() Layout configuration not possible.\n" );
256 // Get last line info and calculate the bearing (used to align glyphs with the baseline).
257 TextViewRelayout::CalculateBearing( characterLayoutInfo, relayoutData );
259 // updates min and max position to calculate the text size for split by new line char.
260 TextViewRelayout::UpdateLayoutInfoTable( minMaxXY,
267 ++relayoutParameters.mCharacterGlobalIndex;
268 relayoutParameters.mIsFirstCharacter = false;
269 relayoutParameters.mIsNewLine = false;
272 } // end group of words
275 if( relayoutData.mCharacterLayoutInfoTable.empty() )
277 relayoutData.mTextSizeForRelayoutOption = Size();
281 relayoutData.mTextSizeForRelayoutOption.width = minMaxXY.z - minMaxXY.x;
282 relayoutData.mTextSizeForRelayoutOption.height = minMaxXY.w - minMaxXY.y;
285 // Check if the last character is a new line character. In that case the height should be added.
286 if( !relayoutData.mTextLayoutInfo.mLinesLayoutInfo.empty() )
288 const TextViewProcessor::LineLayoutInfo& lineLayoutInfo( *( relayoutData.mTextLayoutInfo.mLinesLayoutInfo.end() - 1 ) );
290 if( lineLayoutInfo.mWordGroupsLayoutInfo.empty() ) // if it's empty, it means the last character is a new line character.
292 relayoutData.mTextSizeForRelayoutOption.height += lineLayoutInfo.mSize.height * relayoutData.mShrinkFactor;
299 void Relayout( Actor textView,
300 TextView::RelayoutOperationMask relayoutOperationMask,
301 const TextView::LayoutParameters& layoutParameters,
302 const TextView::VisualParameters& visualParameters,
303 TextView::RelayoutData& relayoutData )
305 if( relayoutOperationMask & TextView::RELAYOUT_SIZE_POSITION )
307 relayoutData.mLineJustificationInfo.clear();
308 CalculateSizeAndPosition( layoutParameters,
311 TextViewRelayout::SetUnderlineInfo( relayoutData );
314 if( relayoutOperationMask & TextView::RELAYOUT_ALIGNMENT )
316 TextViewRelayout::UpdateAlignment( layoutParameters,
320 if( relayoutOperationMask & TextView::RELAYOUT_VISIBILITY )
322 TextViewRelayout::UpdateVisibility( layoutParameters,
327 if( relayoutOperationMask & TextView::RELAYOUT_INITIALIZE_TEXT_ACTORS )
329 TextViewProcessor::InitializeTextActorInfo( relayoutData );
332 if( relayoutOperationMask & TextView::RELAYOUT_TEXT_ACTOR_UPDATE )
334 TextViewRelayout::UpdateTextActorInfo( visualParameters,
338 if( ( relayoutOperationMask & TextView::RELAYOUT_INSERT_TO_TEXT_VIEW ) ||
339 ( relayoutOperationMask & TextView::RELAYOUT_INSERT_TO_TEXT_ACTOR_LIST ) )
341 TextViewRelayout::InsertToTextView( relayoutOperationMask,
347 } // namespace SplitByNewLineChar
349 } // namespace Internal
351 } // namespace Toolkit