mirror of https://github.com/axmolengine/axmol.git
386 lines
13 KiB
C++
386 lines
13 KiB
C++
/****************************************************************************
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Copyright (c) 2013 Zynga Inc.
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Copyright (c) 2013-2014 Chukong Technologies Inc.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "2d/CCFontAtlas.h"
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#include "2d/CCFontFreeType.h"
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#include "base/ccUTF8.h"
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#include "base/CCDirector.h"
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#include "base/CCEventListenerCustom.h"
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#include "base/CCEventDispatcher.h"
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#include "base/CCEventType.h"
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NS_CC_BEGIN
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const int FontAtlas::CacheTextureWidth = 512;
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const int FontAtlas::CacheTextureHeight = 512;
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const char* FontAtlas::EVENT_PURGE_TEXTURES = "__cc_FontAtlasPurgeTextures";
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FontAtlas::FontAtlas(Font &theFont)
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: _font(&theFont)
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, _currentPageData(nullptr)
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, _fontAscender(0)
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, _rendererRecreatedListener(nullptr)
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, _antialiasEnabled(true)
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, _rendererRecreate(false)
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{
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_font->retain();
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FontFreeType* fontTTf = dynamic_cast<FontFreeType*>(_font);
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if (fontTTf)
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{
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_commonLineHeight = _font->getFontMaxHeight();
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_fontAscender = fontTTf->getFontAscender();
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auto texture = new (std::nothrow) Texture2D;
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_currentPage = 0;
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_currentPageOrigX = 0;
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_currentPageOrigY = 0;
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_letterPadding = 0;
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if(fontTTf->isDistanceFieldEnabled())
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{
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_letterPadding += 2 * FontFreeType::DistanceMapSpread;
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}
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_currentPageDataSize = CacheTextureWidth * CacheTextureHeight;
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auto outlineSize = fontTTf->getOutlineSize();
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if(outlineSize > 0)
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{
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_commonLineHeight += 2 * outlineSize;
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_currentPageDataSize *= 2;
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}
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_currentPageData = new unsigned char[_currentPageDataSize];
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memset(_currentPageData, 0, _currentPageDataSize);
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auto pixelFormat = outlineSize > 0 ? Texture2D::PixelFormat::AI88 : Texture2D::PixelFormat::A8;
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texture->initWithData(_currentPageData, _currentPageDataSize,
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pixelFormat, CacheTextureWidth, CacheTextureHeight, Size(CacheTextureWidth,CacheTextureHeight) );
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addTexture(texture,0);
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texture->release();
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#if CC_ENABLE_CACHE_TEXTURE_DATA
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auto eventDispatcher = Director::getInstance()->getEventDispatcher();
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_rendererRecreatedListener = EventListenerCustom::create(EVENT_RENDERER_RECREATED, CC_CALLBACK_1(FontAtlas::listenRendererRecreated, this));
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eventDispatcher->addEventListenerWithFixedPriority(_rendererRecreatedListener, 1);
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#endif
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}
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}
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FontAtlas::~FontAtlas()
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{
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#if CC_ENABLE_CACHE_TEXTURE_DATA
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FontFreeType* fontTTf = dynamic_cast<FontFreeType*>(_font);
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if (fontTTf && _rendererRecreatedListener)
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{
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auto eventDispatcher = Director::getInstance()->getEventDispatcher();
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eventDispatcher->removeEventListener(_rendererRecreatedListener);
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_rendererRecreatedListener = nullptr;
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}
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#endif
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_font->release();
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relaseTextures();
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delete []_currentPageData;
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}
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void FontAtlas::relaseTextures()
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{
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for( auto &item: _atlasTextures)
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{
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item.second->release();
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}
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_atlasTextures.clear();
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}
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void FontAtlas::purgeTexturesAtlas()
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{
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FontFreeType* fontTTf = dynamic_cast<FontFreeType*>(_font);
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if (fontTTf && _atlasTextures.size() > 1)
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{
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for( auto &item: _atlasTextures)
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{
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if (item.first != 0)
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{
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item.second->release();
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}
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}
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auto temp = _atlasTextures[0];
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_atlasTextures.clear();
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_atlasTextures[0] = temp;
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_fontLetterDefinitions.clear();
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memset(_currentPageData,0,_currentPageDataSize);
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_currentPage = 0;
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_currentPageOrigX = 0;
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_currentPageOrigY = 0;
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auto eventDispatcher = Director::getInstance()->getEventDispatcher();
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eventDispatcher->dispatchCustomEvent(EVENT_PURGE_TEXTURES,this);
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}
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}
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void FontAtlas::listenRendererRecreated(EventCustom *event)
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{
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FontFreeType* fontTTf = dynamic_cast<FontFreeType*>(_font);
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if (fontTTf)
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{
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for( auto &item: _atlasTextures)
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{
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if (item.first != 0)
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{
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item.second->release();
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}
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}
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auto temp = _atlasTextures[0];
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_atlasTextures.clear();
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_atlasTextures[0] = temp;
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_fontLetterDefinitions.clear();
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memset(_currentPageData,0,_currentPageDataSize);
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_currentPage = 0;
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_currentPageOrigX = 0;
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_currentPageOrigY = 0;
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_rendererRecreate = true;
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auto eventDispatcher = Director::getInstance()->getEventDispatcher();
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eventDispatcher->dispatchCustomEvent(EVENT_PURGE_TEXTURES,this);
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_rendererRecreate = false;
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}
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}
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void FontAtlas::addLetterDefinition(const FontLetterDefinition &letterDefinition)
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{
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_fontLetterDefinitions[letterDefinition.letteCharUTF16] = letterDefinition;
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}
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bool FontAtlas::getLetterDefinitionForChar(char16_t letteCharUTF16, FontLetterDefinition &outDefinition)
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{
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auto outIterator = _fontLetterDefinitions.find(letteCharUTF16);
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if (outIterator != _fontLetterDefinitions.end())
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{
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outDefinition = (*outIterator).second;
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return true;
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}
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else
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{
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outDefinition.validDefinition = false;
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return false;
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}
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}
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bool FontAtlas::prepareLetterDefinitions(const std::u16string& utf16String)
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{
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FontFreeType* fontTTf = dynamic_cast<FontFreeType*>(_font);
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if(fontTTf == nullptr)
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return false;
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size_t length = utf16String.length();
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float offsetAdjust = _letterPadding / 2;
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long bitmapWidth;
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long bitmapHeight;
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Rect tempRect;
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FontLetterDefinition tempDef;
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auto scaleFactor = CC_CONTENT_SCALE_FACTOR();
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auto pixelFormat = fontTTf->getOutlineSize() > 0 ? Texture2D::PixelFormat::AI88 : Texture2D::PixelFormat::A8;
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bool existNewLetter = false;
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int bottomHeight = _commonLineHeight - _fontAscender;
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float startY = _currentPageOrigY;
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for (size_t i = 0; i < length; ++i)
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{
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auto outIterator = _fontLetterDefinitions.find(utf16String[i]);
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if (outIterator == _fontLetterDefinitions.end())
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{
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existNewLetter = true;
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auto bitmap = fontTTf->getGlyphBitmap(utf16String[i],bitmapWidth,bitmapHeight,tempRect,tempDef.xAdvance);
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if (bitmap)
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{
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tempDef.validDefinition = true;
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tempDef.letteCharUTF16 = utf16String[i];
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tempDef.width = tempRect.size.width + _letterPadding;
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tempDef.height = tempRect.size.height + _letterPadding;
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tempDef.offsetX = tempRect.origin.x + offsetAdjust;
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tempDef.offsetY = _fontAscender + tempRect.origin.y - offsetAdjust;
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tempDef.clipBottom = bottomHeight - (tempDef.height + tempRect.origin.y + offsetAdjust);
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if (_currentPageOrigX + tempDef.width > CacheTextureWidth)
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{
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_currentPageOrigY += _commonLineHeight;
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_currentPageOrigX = 0;
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if(_currentPageOrigY + _commonLineHeight >= CacheTextureHeight)
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{
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unsigned char *data = nullptr;
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if(pixelFormat == Texture2D::PixelFormat::AI88)
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{
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data = _currentPageData + CacheTextureWidth * (int)startY * 2;
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}
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else
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{
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data = _currentPageData + CacheTextureWidth * (int)startY;
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}
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_atlasTextures[_currentPage]->updateWithData(data, 0, startY,
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CacheTextureWidth, CacheTextureHeight - startY);
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startY = 0.0f;
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_currentPageOrigY = 0;
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memset(_currentPageData, 0, _currentPageDataSize);
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_currentPage++;
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auto tex = new (std::nothrow) Texture2D;
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if (_antialiasEnabled)
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{
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tex->setAntiAliasTexParameters();
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}
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else
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{
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tex->setAliasTexParameters();
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}
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tex->initWithData(_currentPageData, _currentPageDataSize,
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pixelFormat, CacheTextureWidth, CacheTextureHeight, Size(CacheTextureWidth,CacheTextureHeight) );
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addTexture(tex,_currentPage);
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tex->release();
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}
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}
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fontTTf->renderCharAt(_currentPageData,_currentPageOrigX,_currentPageOrigY,bitmap,bitmapWidth,bitmapHeight);
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tempDef.U = _currentPageOrigX;
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tempDef.V = _currentPageOrigY;
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tempDef.textureID = _currentPage;
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_currentPageOrigX += tempDef.width + 1;
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// take from pixels to points
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tempDef.width = tempDef.width / scaleFactor;
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tempDef.height = tempDef.height / scaleFactor;
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tempDef.U = tempDef.U / scaleFactor;
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tempDef.V = tempDef.V / scaleFactor;
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}
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else{
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if(tempDef.xAdvance)
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tempDef.validDefinition = true;
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else
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tempDef.validDefinition = false;
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tempDef.letteCharUTF16 = utf16String[i];
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tempDef.width = 0;
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tempDef.height = 0;
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tempDef.U = 0;
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tempDef.V = 0;
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tempDef.offsetX = 0;
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tempDef.offsetY = 0;
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tempDef.textureID = 0;
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tempDef.clipBottom = 0;
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_currentPageOrigX += 1;
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}
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_fontLetterDefinitions[tempDef.letteCharUTF16] = tempDef;
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}
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}
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if(existNewLetter)
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{
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if (_rendererRecreate)
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{
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_atlasTextures[_currentPage]->initWithData(_currentPageData, _currentPageDataSize,
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pixelFormat, CacheTextureWidth, CacheTextureHeight, Size(CacheTextureWidth,CacheTextureHeight) );
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}
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else
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{
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unsigned char *data = nullptr;
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if(pixelFormat == Texture2D::PixelFormat::AI88)
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{
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data = _currentPageData + CacheTextureWidth * (int)startY * 2;
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}
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else
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{
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data = _currentPageData + CacheTextureWidth * (int)startY;
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}
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_atlasTextures[_currentPage]->updateWithData(data, 0, startY,
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CacheTextureWidth, _currentPageOrigY - startY + _commonLineHeight);
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}
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}
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return true;
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}
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void FontAtlas::addTexture(Texture2D *texture, int slot)
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{
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texture->retain();
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_atlasTextures[slot] = texture;
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}
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Texture2D* FontAtlas::getTexture(int slot)
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{
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return _atlasTextures[slot];
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}
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float FontAtlas::getCommonLineHeight() const
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{
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return _commonLineHeight;
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}
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void FontAtlas::setCommonLineHeight(float newHeight)
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{
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_commonLineHeight = newHeight;
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}
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const Font * FontAtlas::getFont() const
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{
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return _font;
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}
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void FontAtlas::setAliasTexParameters()
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{
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if (_antialiasEnabled)
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{
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_antialiasEnabled = false;
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for (const auto & tex : _atlasTextures)
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{
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tex.second->setAliasTexParameters();
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}
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}
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}
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void FontAtlas::setAntiAliasTexParameters()
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{
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if (! _antialiasEnabled)
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{
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_antialiasEnabled = true;
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for (const auto & tex : _atlasTextures)
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{
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tex.second->setAntiAliasTexParameters();
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}
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}
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}
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NS_CC_END
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