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axmol/core/2d/CCFontFNT.cpp

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/****************************************************************************
Copyright (c) 2013 Zynga Inc.
Copyright (c) 2013-2016 Chukong Technologies Inc.
Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
Copyright (c) 2021 Bytedance Inc.
https://axmolengine.github.io/
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 "2d/CCFontFNT.h"
#include "2d/CCFontAtlas.h"
#include "2d/CCSpriteFrameCache.h"
#include "platform/CCFileUtils.h"
#include "base/CCConfiguration.h"
#include "base/CCDirector.h"
#include "base/CCMap.h"
#include "base/ccUTF8.h"
#include "renderer/CCTextureCache.h"
#include <cmath>
NS_AX_BEGIN
/**
* @addtogroup GUI
* @{
* @addtogroup label
* @{
*/
enum
{
kLabelAutomaticWidth = -1,
};
struct _FontDefHashElement;
//
// FNTConfig Cache - free functions
//
static StringMap<BMFontConfiguration*>* s_configurations = nullptr;
BMFontConfiguration* FNTConfigLoadFile(std::string_view fntFile)
{
BMFontConfiguration* ret = nullptr;
if (s_configurations == nullptr)
{
s_configurations = new StringMap<BMFontConfiguration*>();
}
ret = s_configurations->at(fntFile);
if (ret == nullptr)
{
ret = BMFontConfiguration::create(fntFile);
if (ret)
{
s_configurations->insert(fntFile, ret);
}
}
return ret;
}
//
// BitmapFontConfiguration
//
BMFontConfiguration* BMFontConfiguration::create(std::string_view FNTfile)
{
BMFontConfiguration* ret = new BMFontConfiguration();
if (ret->initWithFNTfile(FNTfile))
{
ret->autorelease();
return ret;
}
AX_SAFE_DELETE(ret);
return nullptr;
}
bool BMFontConfiguration::initWithFNTfile(std::string_view FNTfile)
{
_characterSet = this->parseConfigFile(FNTfile);
if (!_characterSet)
{
return false;
}
return true;
}
std::set<unsigned int>* BMFontConfiguration::getCharacterSet() const
{
return _characterSet;
}
BMFontConfiguration::BMFontConfiguration() : _commonHeight(0), _characterSet(nullptr), _fontSize(0) {}
BMFontConfiguration::~BMFontConfiguration()
{
AXLOGINFO("deallocing BMFontConfiguration: %p", this);
this->purgeFontDefDictionary();
this->purgeKerningDictionary();
_atlasName.clear();
AX_SAFE_DELETE(_characterSet);
}
std::string BMFontConfiguration::description() const
{
return StringUtils::format(
"<BMFontConfiguration = " AX_FORMAT_PRINTF_SIZE_T " | Glphys:%d Kernings:%d | Image = %s>", (size_t)this,
static_cast<int>(_fontDefDictionary.size()), static_cast<int>(_kerningDictionary.size()), _atlasName.c_str());
}
void BMFontConfiguration::purgeKerningDictionary()
{
_kerningDictionary.clear();
}
void BMFontConfiguration::purgeFontDefDictionary()
{
_fontDefDictionary.clear();
}
std::set<unsigned int>* BMFontConfiguration::parseConfigFile(std::string_view controlFile)
{
std::string data = FileUtils::getInstance()->getStringFromFile(controlFile);
if (data.empty())
{
return nullptr;
}
if (data.size() >= (sizeof("BMP") - 1) && memcmp("BMF", data.c_str(), sizeof("BMP") - 1) == 0)
{
// Handle fnt file of binary format
std::set<unsigned int>* ret = parseBinaryConfigFile((unsigned char*)&data.front(), static_cast<uint32_t>(data.size()), controlFile);
return ret;
}
if (data[0] == 0)
{
AXLOG("axmol: Error parsing FNTfile %s", controlFile.data());
return nullptr;
}
auto contents = data.c_str();
std::set<unsigned int>* validCharsString = new std::set<unsigned int>();
auto contentsLen = strlen(contents);
char line[512] = {0};
auto next = strchr(contents, '\n');
auto base = contents;
size_t parseCount = 0;
while (next)
{
size_t lineLength = ((int)(next - base));
memcpy(line, contents + parseCount, lineLength);
line[lineLength] = 0;
parseCount += lineLength + 1;
if (parseCount < contentsLen)
{
base = next + 1;
next = strchr(base, '\n');
}
else
{
next = nullptr;
}
if (memcmp(line, "info face", 9) == 0)
{
// FIXME: info parsing is incomplete
// Not needed for the Hiero editors, but needed for the AngelCode editor
// [self parseInfoArguments:line];
this->parseInfoArguments(line);
}
// Check to see if the start of the line is something we are interested in
else if (memcmp(line, "common lineHeight", 17) == 0)
{
this->parseCommonArguments(line);
}
else if (memcmp(line, "page id", 7) == 0)
{
this->parseImageFileName(line, controlFile);
}
else if (memcmp(line, "chars c", 7) == 0)
{
// Ignore this line
}
else if (memcmp(line, "char", 4) == 0)
{
// Parse the current line and create a new CharDef
unsigned int charID = this->parseCharacterDefinition(line);
validCharsString->insert(charID);
}
else if (memcmp(line, "kerning first", 13) == 0)
{
this->parseKerningEntry(line);
}
}
return validCharsString;
}
std::set<unsigned int>* BMFontConfiguration::parseBinaryConfigFile(unsigned char* pData,
uint32_t size,
std::string_view controlFile)
{
/* based on http://www.angelcode.com/products/bmfont/doc/file_format.html file format */
std::set<unsigned int>* validCharsString = new std::set<unsigned int>();
uint32_t remains = size;
AXASSERT(pData[3] == 3, "Only version 3 is supported");
pData += 4;
remains -= 4;
while (remains > 0)
{
unsigned char blockId = pData[0];
pData += 1;
remains -= 1;
uint32_t blockSize = 0;
memcpy(&blockSize, pData, 4);
pData += 4;
remains -= 4;
if (blockId == 1)
{
/*
fontSize 2 int 0
bitField 1 bits 2 bit 0: smooth, bit 1: unicode, bit 2: italic, bit 3: bold, bit 4:
fixedHeight, bits 5-7: reserved charSet 1 uint 3 stretchH 2 uint 4 aa 1 uint 6
paddingUp 1 uint 7
paddingRight 1 uint 8
paddingDown 1 uint 9
paddingLeft 1 uint 10
spacingHoriz 1 uint 11
spacingVert 1 uint 12
outline 1 uint 13 added with version 2
fontName n+1 string 14 null terminated string with length n
*/
memcpy(&_fontSize, pData, 2);
_padding.top = (unsigned char)pData[7];
_padding.right = (unsigned char)pData[8];
_padding.bottom = (unsigned char)pData[9];
_padding.left = (unsigned char)pData[10];
}
else if (blockId == 2)
{
/*
lineHeight 2 uint 0
base 2 uint 2
scaleW 2 uint 4
scaleH 2 uint 6
pages 2 uint 8
bitField 1 bits 10 bits 0-6: reserved, bit 7: packed
alphaChnl 1 uint 11
redChnl 1 uint 12
greenChnl 1 uint 13
blueChnl 1 uint 14
*/
uint16_t lineHeight = 0;
memcpy(&lineHeight, pData, 2);
_commonHeight = lineHeight;
uint16_t scaleW = 0;
memcpy(&scaleW, pData + 4, 2);
uint16_t scaleH = 0;
memcpy(&scaleH, pData + 6, 2);
AXASSERT(scaleW <= Configuration::getInstance()->getMaxTextureSize() &&
scaleH <= Configuration::getInstance()->getMaxTextureSize(),
"CCLabelBMFont: page can't be larger than supported");
uint16_t pages = 0;
memcpy(&pages, pData + 8, 2);
AXASSERT(pages == 1, "CCBitfontAtlas: only supports 1 page");
}
else if (blockId == 3)
{
/*
pageNames p*(n+1) strings 0 p null terminated strings, each with length n
*/
const char* value = (const char*)pData;
AXASSERT(strlen(value) < blockSize, "Block size should be less then string");
_atlasName = FileUtils::getInstance()->fullPathFromRelativeFile(value, controlFile);
}
else if (blockId == 4)
{
/*
id 4 uint 0+c*20 These fields are repeated until all characters have been described
x 2 uint 4+c*20
y 2 uint 6+c*20
width 2 uint 8+c*20
height 2 uint 10+c*20
xoffset 2 int 12+c*20
yoffset 2 int 14+c*20
xadvance 2 int 16+c*20
page 1 uint 18+c*20
chnl 1 uint 19+c*20
*/
uint32_t count = blockSize / 20;
for (uint32_t i = 0; i < count; i++)
{
uint32_t charId = 0;
memcpy(&charId, pData + (i * 20), 4);
BMFontDef& fontDef = _fontDefDictionary[charId];
fontDef.charID = charId;
uint16_t charX = 0;
memcpy(&charX, pData + (i * 20) + 4, 2);
fontDef.rect.origin.x = charX;
uint16_t charY = 0;
memcpy(&charY, pData + (i * 20) + 6, 2);
fontDef.rect.origin.y = charY;
uint16_t charWidth = 0;
memcpy(&charWidth, pData + (i * 20) + 8, 2);
fontDef.rect.size.width = charWidth;
uint16_t charHeight = 0;
memcpy(&charHeight, pData + (i * 20) + 10, 2);
fontDef.rect.size.height = charHeight;
int16_t xoffset = 0;
memcpy(&xoffset, pData + (i * 20) + 12, 2);
fontDef.xOffset = xoffset;
int16_t yoffset = 0;
memcpy(&yoffset, pData + (i * 20) + 14, 2);
fontDef.yOffset = yoffset;
int16_t xadvance = 0;
memcpy(&xadvance, pData + (i * 20) + 16, 2);
fontDef.xAdvance = xadvance;
validCharsString->insert(fontDef.charID);
}
}
else if (blockId == 5)
{
/*
first 4 uint 0+c*10 These fields are repeated until all kerning pairs have been described
second 4 uint 4+c*10
amount 2 int 8+c*10
*/
uint32_t count = blockSize / 20;
for (uint32_t i = 0; i < count; i++)
{
uint32_t first = 0;
memcpy(&first, pData + (i * 10), 4);
uint32_t second = 0;
memcpy(&second, pData + (i * 10) + 4, 4);
int16_t amount = 0;
memcpy(&amount, pData + (i * 10) + 8, 2);
uint64_t key = ((uint64_t)first << 32) | ((uint64_t)second & 0xffffffffll);
_kerningDictionary[key] = amount;
}
}
pData += blockSize;
remains -= blockSize;
}
return validCharsString;
}
void BMFontConfiguration::parseImageFileName(const char* line, std::string_view fntFile)
{
//////////////////////////////////////////////////////////////////////////
// line to parse:
// page id=0 file="bitmapFontTest.png"
//////////////////////////////////////////////////////////////////////////
// page ID. Sanity check
int pageId;
sscanf(line, "page id=%d", &pageId);
AXASSERT(pageId == 0, "LabelBMFont file could not be found");
// file
char fileName[255];
sscanf(strstr(line, "file=\"") + 6, "%[^\"]", fileName);
_atlasName = FileUtils::getInstance()->fullPathFromRelativeFile(fileName, fntFile);
}
void BMFontConfiguration::parseInfoArguments(const char* line)
{
//////////////////////////////////////////////////////////////////////////
// possible lines to parse:
// info face="Script" size=32 bold=0 italic=0 charset="" unicode=1 stretchH=100 smooth=1 aa=1 padding=1,4,3,2
// spacing=0,0 outline=0 info face="Cracked" size=36 bold=0 italic=0 charset="" unicode=0 stretchH=100 smooth=1 aa=1
// padding=0,0,0,0 spacing=1,1
//////////////////////////////////////////////////////////////////////////
sscanf(strstr(line, "size=") + 5, "%d", &_fontSize);
// padding
sscanf(strstr(line, "padding=") + 8, "%d,%d,%d,%d", &_padding.top, &_padding.right, &_padding.bottom,
&_padding.left);
// AXLOG("axmol: padding: %d,%d,%d,%d", _padding.left, _padding.top, _padding.right, _padding.bottom);
}
void BMFontConfiguration::parseCommonArguments(const char* line)
{
//////////////////////////////////////////////////////////////////////////
// line to parse:
// common lineHeight=104 base=26 scaleW=1024 scaleH=512 pages=1 packed=0
//////////////////////////////////////////////////////////////////////////
// Height
auto tmp = strstr(line, "lineHeight=") + 11;
sscanf(tmp, "%d", &_commonHeight);
#if _AX_DEBUG > 0
// scaleW. sanity check
int value;
tmp = strstr(tmp, "scaleW=") + 7;
sscanf(tmp, "%d", &value);
int maxTextureSize = Configuration::getInstance()->getMaxTextureSize();
AXASSERT(value <= maxTextureSize, "CCLabelBMFont: page can't be larger than supported");
// scaleH. sanity check
tmp = strstr(tmp, "scaleH=") + 7;
sscanf(tmp, "%d", &value);
AXASSERT(value <= maxTextureSize, "CCLabelBMFont: page can't be larger than supported");
// pages. sanity check
tmp = strstr(tmp, "pages=") + 6;
sscanf(tmp, "%d", &value);
AXASSERT(value == 1, "CCBitfontAtlas: only supports 1 page");
#endif
// packed (ignore) What does this mean ??
}
unsigned int BMFontConfiguration::parseCharacterDefinition(const char* line)
{
unsigned int charID = 0;
//////////////////////////////////////////////////////////////////////////
// line to parse:
// char id=32 x=0 y=0 width=0 height=0 xoffset=0 yoffset=44 xadvance=14 page=0 chnl=0
//////////////////////////////////////////////////////////////////////////
// Character ID
auto tmp = strstr(line, "id=") + 3;
sscanf(tmp, "%u", &charID);
BMFontDef& characterDefinition = _fontDefDictionary[charID];
characterDefinition.charID = charID;
// Character x
tmp = strstr(tmp, "x=") + 2;
sscanf(tmp, "%f", &characterDefinition.rect.origin.x);
// Character y
tmp = strstr(tmp, "y=") + 2;
sscanf(tmp, "%f", &characterDefinition.rect.origin.y);
// Character width
tmp = strstr(tmp, "width=") + 6;
sscanf(tmp, "%f", &characterDefinition.rect.size.width);
// Character height
tmp = strstr(tmp, "height=") + 7;
sscanf(tmp, "%f", &characterDefinition.rect.size.height);
// Character xoffset
tmp = strstr(tmp, "xoffset=") + 8;
sscanf(tmp, "%hd", &characterDefinition.xOffset);
// Character yoffset
tmp = strstr(tmp, "yoffset=") + 8;
sscanf(tmp, "%hd", &characterDefinition.yOffset);
// Character xadvance
tmp = strstr(tmp, "xadvance=") + 9;
sscanf(tmp, "%hd", &characterDefinition.xAdvance);
return charID;
}
void BMFontConfiguration::parseKerningEntry(const char* line)
{
//////////////////////////////////////////////////////////////////////////
// line to parse:
// kerning first=121 second=44 amount=-7
//////////////////////////////////////////////////////////////////////////
int first, second, amount;
auto tmp = strstr(line, "first=") + 6;
sscanf(tmp, "%d", &first);
tmp = strstr(tmp, "second=") + 7;
sscanf(tmp, "%d", &second);
tmp = strstr(tmp, "amount=") + 7;
sscanf(tmp, "%d", &amount);
uint64_t key = ((uint64_t)first << 32) | ((uint64_t)second & 0xffffffffll);
_kerningDictionary[key] = amount;
}
FontFNT* FontFNT::create(std::string_view fntFilePath, const Rect& imageRect, bool imageRotated)
{
const auto newConf = FNTConfigLoadFile(fntFilePath);
if (!newConf)
return nullptr;
const auto tempFont = new FontFNT(newConf, imageRect, imageRotated);
if (!tempFont)
{
return nullptr;
}
tempFont->setFontSize((float)newConf->_fontSize);
tempFont->autorelease();
return tempFont;
}
FontFNT* FontFNT::create(std::string_view fntFilePath, std::string_view subTextureKey)
{
const auto newConf = FNTConfigLoadFile(fntFilePath);
if (!newConf)
return nullptr;
const auto frame = SpriteFrameCache::getInstance()->getSpriteFrameByName(subTextureKey);
if (!frame)
{
return nullptr;
}
auto tempFont = new FontFNT(newConf, frame->getRectInPixels(), frame->isRotated());
if (!tempFont)
{
return nullptr;
}
tempFont->setFontSize((float)newConf->_fontSize);
tempFont->autorelease();
return tempFont;
}
FontFNT* FontFNT::create(std::string_view fntFilePath)
{
const auto newConf = FNTConfigLoadFile(fntFilePath);
if (!newConf)
return nullptr;
// add the texture
const auto tempTexture = Director::getInstance()->getTextureCache()->addImage(newConf->getAtlasName());
if (!tempTexture)
{
return nullptr;
}
FontFNT* tempFont = new FontFNT(newConf);
tempFont->setFontSize((float)newConf->_fontSize);
if (!tempFont)
{
return nullptr;
}
tempFont->autorelease();
return tempFont;
}
FontFNT* FontFNT::create(std::string_view fntFilePath, const Vec2& imageOffset)
{
return create(fntFilePath, Rect(imageOffset.x, imageOffset.y, 0, 0), false);
}
FontFNT::FontFNT(BMFontConfiguration* theContfig, const Rect& imageRect, bool imageRotated)
: _configuration(theContfig), _imageRectInPoints(AX_RECT_PIXELS_TO_POINTS(imageRect)), _imageRotated(imageRotated)
{
_configuration->retain();
}
FontFNT::FontFNT(BMFontConfiguration* theContfig)
: _configuration(theContfig), _imageRectInPoints(Rect::ZERO), _imageRotated(false)
{}
FontFNT::~FontFNT()
{
_configuration->release();
}
void FontFNT::purgeCachedData()
{
if (s_configurations)
{
s_configurations->clear();
AX_SAFE_DELETE(s_configurations);
}
}
int* FontFNT::getHorizontalKerningForTextUTF32(const std::u32string& text, int& outNumLetters) const
{
outNumLetters = static_cast<int>(text.length());
if (!outNumLetters)
return nullptr;
int* sizes = new int[outNumLetters];
for (int c = 0; c < outNumLetters; ++c)
{
if (c < (outNumLetters - 1))
sizes[c] = getHorizontalKerningForChars(text[c], text[c + 1]);
else
sizes[c] = 0;
}
return sizes;
}
int FontFNT::getHorizontalKerningForChars(char32_t firstChar, char32_t secondChar) const
{
int ret = 0;
uint64_t key = ((uint64_t)firstChar << 32) | ((uint64_t)secondChar & 0xffffffffll);
auto iter = _configuration->_kerningDictionary.find(key);
if (iter != _configuration->_kerningDictionary.end())
{
ret = iter->second;
}
return ret;
}
void FontFNT::setFontSize(float fontSize)
{
_fontSize = fontSize;
}
int FontFNT::getOriginalFontSize() const
{
return _configuration->_fontSize;
}
FontAtlas* FontFNT::newFontAtlas()
{
// check that everything is fine with the BMFontCofniguration
if (_configuration->_fontDefDictionary.empty())
return nullptr;
size_t numGlyphs = _configuration->_characterSet->size();
if (numGlyphs == 0)
return nullptr;
if (_configuration->_commonHeight == 0)
return nullptr;
FontAtlas* tempAtlas = new FontAtlas(this);
// common height
int originalFontSize = _configuration->_fontSize;
float originalLineHeight = (float)_configuration->_commonHeight;
float factor = 0.0f;
if (std::abs(_fontSize - originalFontSize) < FLT_EPSILON)
{
factor = 1.0f;
}
else
{
factor = _fontSize / originalFontSize;
}
tempAtlas->setLineHeight(originalLineHeight * factor);
auto rw = _imageRectInPoints.size.width;
auto rh = _imageRectInPoints.size.height;
if (_imageRotated)
std::swap(rw, rh);
const auto left = _imageRectInPoints.origin.x;
const auto right = _imageRectInPoints.origin.x + rw;
const auto top = _imageRectInPoints.origin.y;
for (auto&& e : _configuration->_fontDefDictionary)
{
BMFontDef& fontDef = e.second;
FontLetterDefinition tempDefinition;
const auto tempRect = AX_RECT_PIXELS_TO_POINTS(fontDef.rect);
tempDefinition.offsetX = fontDef.xOffset;
tempDefinition.offsetY = fontDef.yOffset;
if (_imageRotated)
{
tempDefinition.U = right - tempRect.origin.y - tempRect.size.height;
tempDefinition.V = tempRect.origin.x + top;
}
else
{
tempDefinition.U = tempRect.origin.x + left;
tempDefinition.V = tempRect.origin.y + top;
}
tempDefinition.width = tempRect.size.width;
tempDefinition.height = tempRect.size.height;
// carloX: only one texture supported FOR NOW
tempDefinition.textureID = 0;
tempDefinition.validDefinition = true;
tempDefinition.xAdvance = fontDef.xAdvance;
tempDefinition.rotated = _imageRotated;
// add the new definition
if (65535 < fontDef.charID)
{
AXLOGWARN("Warning: 65535 < fontDef.charID (%u), ignored", fontDef.charID);
}
else
{
tempAtlas->addLetterDefinition(fontDef.charID, tempDefinition);
}
}
// add the texture (only one texture for now)
Texture2D* tempTexture = Director::getInstance()->getTextureCache()->addImage(_configuration->getAtlasName());
if (!tempTexture)
{
AX_SAFE_RELEASE(tempAtlas);
return nullptr;
}
// add the texture
tempAtlas->setTexture(0, tempTexture);
// done
return tempAtlas;
}
void FontFNT::reloadBMFontResource(std::string_view fntFilePath)
{
if (s_configurations == nullptr)
{
s_configurations = new StringMap<BMFontConfiguration*>();
}
BMFontConfiguration* ret = s_configurations->at(fntFilePath);
if (ret != nullptr)
{
s_configurations->erase(fntFilePath);
}
ret = BMFontConfiguration::create(fntFilePath);
if (ret)
{
s_configurations->insert(fntFilePath, ret);
Director::getInstance()->getTextureCache()->reloadTexture(ret->getAtlasName());
}
}
NS_AX_END
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