bool LabelTextFormatter::createStringSprites(Label *theLabel)
{
theLabel->_limitShowCount = 0;
// check for string
int stringLen = theLabel->getStringLength();
if (stringLen <= 0)
return false;
auto totalHeight = theLabel->_commonLineHeight * theLabel->_currNumLines;
auto longestLine = 0.0f;
auto nextFontPositionX = 0.0f;
auto nextFontPositionY = totalHeight;
auto contentScaleFactor = CC_CONTENT_SCALE_FACTOR();
if (theLabel->_labelHeight > 0)
{
auto labelHeightPixel = theLabel->_labelHeight * contentScaleFactor;
if (totalHeight > labelHeightPixel)
{
int numLines = labelHeightPixel / theLabel->_commonLineHeight;
totalHeight = numLines * theLabel->_commonLineHeight;
}
switch (theLabel->_vAlignment)
{
case TextVAlignment::TOP:
nextFontPositionY = labelHeightPixel;
break;
case TextVAlignment::CENTER:
nextFontPositionY = (labelHeightPixel + totalHeight) / 2.0f;
break;
case TextVAlignment::BOTTOM:
nextFontPositionY = totalHeight;
break;
default:
break;
}
}
int charXOffset = 0;
int charYOffset = 0;
int charAdvance = 0;
auto strWhole = theLabel->_currentUTF16String;
auto fontAtlas = theLabel->_fontAtlas;
FontLetterDefinition tempDefinition;
Vec2 letterPosition;
const auto& kernings = theLabel->_horizontalKernings;
CCASSERT(kernings, "kernings must's be nullptr!!!");
float clipTop = 0;
float clipBottom = 0;
int lineIndex = 0;
bool lineStart = true;
bool clipBlank = false;
if (theLabel->_currentLabelType == Label::LabelType::TTF && theLabel->_clipEnabled)
{
clipBlank = true;
}
for (int i = 0; i < stringLen; i++)
{
char16_t c = strWhole[i];
if (fontAtlas->getLetterDefinitionForChar(c, tempDefinition))
{
charXOffset = tempDefinition.offsetX;
charYOffset = tempDefinition.offsetY;
charAdvance = tempDefinition.xAdvance;
}
else
{
charXOffset = -1;
charYOffset = -1;
charAdvance = -1;
}
if (c == '\n')
{
lineIndex++;
nextFontPositionX = 0;
nextFontPositionY -= theLabel->_commonLineHeight;
theLabel->recordPlaceholderInfo(i);
if(nextFontPositionY < theLabel->_commonLineHeight)
break;
lineStart = true;
continue;
}
else if (clipBlank && tempDefinition.height > 0.0f)
{
if (lineStart)
{
if (lineIndex == 0)
{
clipTop = charYOffset;
}
lineStart = false;
clipBottom = tempDefinition.clipBottom;
}
else if(tempDefinition.clipBottom < clipBottom)
{
clipBottom = tempDefinition.clipBottom;
}
if (lineIndex == 0 && charYOffset < clipTop)
{
clipTop = charYOffset;
}
}
letterPosition.x = (nextFontPositionX + charXOffset + kernings[i]) / contentScaleFactor;
letterPosition.y = (nextFontPositionY - charYOffset) / contentScaleFactor;
if( theLabel->recordLetterInfo(letterPosition, tempDefinition, i) == false)
{
log("WARNING: can't find letter definition in font file for letter: %c", c);
continue;
}
nextFontPositionX += charAdvance + theLabel->_additionalKerning;
auto letterRight = letterPosition.x + tempDefinition.width;
if (longestLine < letterRight)
{
longestLine = letterRight;
}
}
Size tmpSize(longestLine * contentScaleFactor, totalHeight);
if (theLabel->_labelHeight > 0)
{
tmpSize.height = theLabel->_labelHeight * contentScaleFactor;
}
if (clipBlank)
{
int clipTotal = (clipTop + clipBottom) / contentScaleFactor;
tmpSize.height -= clipTotal * contentScaleFactor;
clipBottom /= contentScaleFactor;
for (int i = 0; i < theLabel->_limitShowCount; i++)
{
theLabel->_lettersInfo[i].position.y -= clipBottom;
}
}
theLabel->setContentSize(CC_SIZE_PIXELS_TO_POINTS(tmpSize));
return true;
}
bool LabelTextFormatter::createStringSprites(Label *theLabel)
{
// check for string
unsigned int stringLen = theLabel->getStringLength();
theLabel->_limitShowCount = 0;
// no string
if (stringLen == 0)
return false;
int longestLine = 0;
unsigned int totalHeight = theLabel->_commonLineHeight * theLabel->_currNumLines;
int nextFontPositionX = 0;
int nextFontPositionY = totalHeight;
auto contentScaleFactor = CC_CONTENT_SCALE_FACTOR();
if (theLabel->_labelHeight > 0)
{
auto labelHeightPixel = theLabel->_labelHeight * contentScaleFactor;
if (totalHeight > labelHeightPixel)
{
int numLines = labelHeightPixel / theLabel->_commonLineHeight;
totalHeight = numLines * theLabel->_commonLineHeight;
}
switch (theLabel->_vAlignment)
{
case TextVAlignment::TOP:
nextFontPositionY = labelHeightPixel;
break;
case TextVAlignment::CENTER:
nextFontPositionY = (labelHeightPixel + totalHeight) / 2.0f;
break;
case TextVAlignment::BOTTOM:
nextFontPositionY = totalHeight;
break;
default:
break;
}
}
Rect charRect;
int charXOffset = 0;
int charYOffset = 0;
int charAdvance = 0;
auto strWhole = theLabel->_currentUTF16String;
auto fontAtlas = theLabel->_fontAtlas;
FontLetterDefinition tempDefinition;
Vec2 letterPosition;
const auto& kernings = theLabel->_horizontalKernings;
float clipTop = 0;
float clipBottom = 0;
int lineIndex = 0;
bool lineStart = true;
bool clip = false;
if (theLabel->_currentLabelType == Label::LabelType::TTF && theLabel->_clipEnabled)
{
clip = true;
}
for (unsigned int i = 0; i < stringLen; i++)
{
char16_t c = strWhole[i];
if (fontAtlas->getLetterDefinitionForChar(c, tempDefinition))
{
charXOffset = tempDefinition.offsetX;
charYOffset = tempDefinition.offsetY;
charAdvance = tempDefinition.xAdvance;
}
else
{
charXOffset = -1;
charYOffset = -1;
charAdvance = -1;
}
if (c == '\n')
{
lineIndex++;
nextFontPositionX = 0;
nextFontPositionY -= theLabel->_commonLineHeight;
theLabel->recordPlaceholderInfo(i);
if(nextFontPositionY < theLabel->_commonLineHeight)
break;
lineStart = true;
continue;
}
else if (clip && tempDefinition.height > 0.0f)
{
if (lineStart)
{
if (lineIndex == 0)
{
clipTop = charYOffset;
}
lineStart = false;
clipBottom = tempDefinition.clipBottom;
}
else if(tempDefinition.clipBottom < clipBottom)
{
clipBottom = tempDefinition.clipBottom;
}
if (lineIndex == 0 && charYOffset < clipTop)
{
clipTop = charYOffset;
}
}
letterPosition.x = (nextFontPositionX + charXOffset + kernings[i]) / contentScaleFactor;
letterPosition.y = (nextFontPositionY - charYOffset) / contentScaleFactor;
if( theLabel->recordLetterInfo(letterPosition,tempDefinition,i) == false)
{
log("WARNING: can't find letter definition in font file for letter: %c", c);
continue;
}
nextFontPositionX += charAdvance + kernings[i] + theLabel->_additionalKerning;
if (longestLine < nextFontPositionX)
{
longestLine = nextFontPositionX;
}
}
float lastCharWidth = tempDefinition.width * contentScaleFactor;
Size tmpSize;
// 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 < lastCharWidth)
{
tmpSize.width = longestLine - charAdvance + lastCharWidth;
}
else
{
tmpSize.width = longestLine;
}
tmpSize.height = totalHeight;
if (theLabel->_labelHeight > 0)
{
tmpSize.height = theLabel->_labelHeight * contentScaleFactor;
}
if (clip)
{
int clipTotal = (clipTop + clipBottom) / contentScaleFactor;
tmpSize.height -= clipTotal * contentScaleFactor;
clipBottom /= contentScaleFactor;
for (int i = 0; i < theLabel->_limitShowCount; i++)
{
theLabel->_lettersInfo[i].position.y -= clipBottom;
}
}
theLabel->setContentSize(CC_SIZE_PIXELS_TO_POINTS(tmpSize));
return true;
}
