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axmol/cocos/2d/CCLabelTextFormatter.cpp

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/****************************************************************************
Copyright (c) 2013 Zynga Inc.
Copyright (c) 2013-2014 Chukong Technologies Inc.
http://www.cocos2d-x.org
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include <vector>
#include "cocos2d.h"
#include "ccUTF8.h"
#include "CCLabelTextFormatter.h"
using namespace std;
NS_CC_BEGIN
bool LabelTextFormatter::multilineText(LabelTextFormatProtocol *theLabel)
{
// to do if (m_fWidth > 0)
if (theLabel->getMaxLineWidth())
{
// Step 1: Make multiline
vector<unsigned short> strWhole = cc_utf16_vec_from_utf16_str(theLabel->getUTF8String());
size_t stringLength = strWhole.size();
vector<unsigned short> multiline_string;
multiline_string.reserve( stringLength );
vector<unsigned short> last_word;
last_word.reserve( stringLength );
unsigned int line = 1, i = 0;
bool isStartOfLine = false, isStartOfWord = false;
float startOfLine = -1, startOfWord = -1;
int skip = 0;
int strLen = theLabel->getStringLenght();
std::vector<LetterInfo> *leterInfo = theLabel->getLettersInfo();
int tIndex = 0;
for (int j = 0; j+skip < strLen; j++)
{
LetterInfo* info = &leterInfo->at(j+skip);
unsigned int justSkipped = 0;
while (info->def.validDefinition == false)
{
justSkipped++;
info = &leterInfo->at( j+skip+justSkipped );
}
skip += justSkipped;
tIndex = j + skip;
if (i >= stringLength)
break;
unsigned short character = strWhole[i];
if (!isStartOfWord)
{
startOfWord = theLabel->getLetterPosXLeft( tIndex );
isStartOfWord = true;
}
if (!isStartOfLine)
{
startOfLine = startOfWord;
isStartOfLine = true;
}
// Newline.
if (character == '\n')
{
cc_utf8_trim_ws(&last_word);
last_word.push_back('\n');
multiline_string.insert(multiline_string.end(), last_word.begin(), last_word.end());
last_word.clear();
isStartOfWord = false;
isStartOfLine = false;
startOfWord = -1;
startOfLine = -1;
i += justSkipped;
++line;
if (i >= stringLength)
break;
character = strWhole[i];
if (!startOfWord)
{
startOfWord = theLabel->getLetterPosXLeft( tIndex );
isStartOfWord = true;
}
if (!startOfLine)
{
startOfLine = startOfWord;
isStartOfLine = true;
}
}
// Whitespace.
if (isspace_unicode(character))
{
last_word.push_back(character);
multiline_string.insert(multiline_string.end(), last_word.begin(), last_word.end());
last_word.clear();
isStartOfWord = false;
startOfWord = -1;
++i;
continue;
}
// Out of bounds.
if (theLabel->getLetterPosXRight( tIndex ) - startOfLine > theLabel->getMaxLineWidth())
{
if (!theLabel->breakLineWithoutSpace())
{
last_word.push_back(character);
int found = cc_utf8_find_last_not_char(multiline_string, ' ');
if (found != -1)
cc_utf8_trim_ws(&multiline_string);
else
multiline_string.clear();
if (multiline_string.size() > 0)
multiline_string.push_back('\n');
++line;
isStartOfLine = false;
startOfLine = -1;
++i;
}
else
{
cc_utf8_trim_ws(&last_word);
last_word.push_back('\n');
multiline_string.insert(multiline_string.end(), last_word.begin(), last_word.end());
last_word.clear();
isStartOfWord = false;
isStartOfLine = false;
startOfWord = -1;
startOfLine = -1;
++line;
if (i >= stringLength)
break;
if (!startOfWord)
{
startOfWord = theLabel->getLetterPosXLeft( tIndex );
isStartOfWord = true;
}
if (!startOfLine)
{
startOfLine = startOfWord;
isStartOfLine = true;
}
--j;
}
continue;
}
else
{
// Character is normal.
last_word.push_back(character);
++i;
continue;
}
}
multiline_string.insert(multiline_string.end(), last_word.begin(), last_word.end());
size_t size = multiline_string.size();
unsigned short* strNew = new unsigned short[size + 1];
for (size_t j = 0; j < size; ++j)
{
strNew[j] = multiline_string[j];
}
strNew[size] = 0;
theLabel->assignNewUTF8String(strNew);
return true;
}
else
{
return false;
}
}
bool LabelTextFormatter::alignText(LabelTextFormatProtocol *theLabel)
{
int i = 0;
int lineNumber = 0;
int strLen = cc_wcslen(theLabel->getUTF8String());
vector<unsigned short> lastLine;
std::vector<LetterInfo> *leterInfo = theLabel->getLettersInfo();
for (int ctr = 0; ctr <= strLen; ++ctr)
{
unsigned short int currentChar = theLabel->getCharAtStringPosition(ctr);
if (currentChar == '\n' || currentChar == 0)
{
float lineWidth = 0.0f;
size_t lineLength = lastLine.size();
// if last line is empty we must just increase lineNumber and work with next line
if (lineLength == 0)
{
lineNumber++;
continue;
}
int index = static_cast<int>(i + lineLength - 1 + lineNumber);
if (index < 0) continue;
LetterInfo* info = &leterInfo->at( index );
if(info->def.validDefinition == false)
continue;
lineWidth = info->position.x + info->contentSize.width /2.0f;
float shift = 0;
switch (theLabel->getTextAlignment())
{
case TextHAlignment::CENTER:
shift = theLabel->getLabelContentSize().width/2.0f - lineWidth/2.0f;
break;
case TextHAlignment::RIGHT:
shift = theLabel->getLabelContentSize().width - lineWidth;
break;
default:
break;
}
if (shift != 0)
{
for (unsigned j = 0; j < lineLength; ++j)
{
index = i + j + lineNumber;
if (index < 0) continue;
info = &leterInfo->at( index );
if(info)
{
info->position = info->position + Point(shift, 0.0f);
}
}
}
i += lineLength;
++lineNumber;
lastLine.clear();
continue;
}
lastLine.push_back(currentChar);
}
return true;
}
bool LabelTextFormatter::createStringSprites(LabelTextFormatProtocol *theLabel)
{
// check for string
unsigned int stringLen = theLabel->getStringLenght();
// no string
if (stringLen == 0)
return false;
int nextFontPositionX = 0;
int nextFontPositionY = 0;
unsigned short prev = -1;
Size tmpSize = Size::ZERO;
int longestLine = 0;
unsigned int totalHeight = 0;
int quantityOfLines = theLabel->getStringNumLines();
int commonLineHeight = theLabel->getCommonLineHeight();
totalHeight = commonLineHeight * quantityOfLines;
nextFontPositionY = 0 - (commonLineHeight - totalHeight);
Rect rect;
Rect charRect;
int charXOffset = 0;
int charYOffset = 0;
int charAdvance = 0;
for (unsigned int i = 0; i < stringLen; i++)
{
// get the current character
unsigned short c = theLabel->getCharAtStringPosition(i);
charXOffset = theLabel->getXOffsetForChar(c);
charYOffset = theLabel->getYOffsetForChar(c);
charAdvance = theLabel->getAdvanceForChar(c, i);
charRect = theLabel->getRectForChar(c);
int kerningAmount = theLabel->getKerningForCharsPair(prev, c);
if (c == '\n')
{
nextFontPositionX = 0;
nextFontPositionY -= commonLineHeight;
theLabel->recordPlaceholderInfo(i);
continue;
}
// See issue 1343. cast( signed short + unsigned integer ) == unsigned integer (sign is lost!)
int yOffset = commonLineHeight - charYOffset;
Point fontPos = Point((float)nextFontPositionX + charXOffset + charRect.size.width * 0.5f + kerningAmount,
(float)nextFontPositionY + yOffset - charRect.size.height * 0.5f);
if( theLabel->recordLetterInfo(CC_POINT_PIXELS_TO_POINTS(fontPos),c,i) == false)
{
log("WARNING: can't find letter definition in font file for letter: %c", c);
continue;
}
// update kerning
nextFontPositionX += charAdvance + kerningAmount;
prev = c;
if (longestLine < nextFontPositionX)
{
longestLine = nextFontPositionX;
}
}
// If the last character processed has an xAdvance which is less that the width of the characters image, then we need
// to adjust the width of the string to take this into account, or the character will overlap the end of the bounding
// box
if (charAdvance < charRect.size.width)
{
tmpSize.width = longestLine + charRect.size.width - charAdvance;
}
else
{
tmpSize.width = longestLine;
}
tmpSize.height = totalHeight;
theLabel->setLabelContentSize(CC_SIZE_PIXELS_TO_POINTS(tmpSize));
return true;
}
NS_CC_END
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