X-Git-Url: http://review.tizen.org/git/?p=platform%2Fcore%2Fuifw%2Fdali-toolkit.git;a=blobdiff_plain;f=dali-toolkit%2Finternal%2Ftext%2Fmulti-language-support-impl.cpp;h=82470f8de4c0ff027b359f0e4001ec6cae6688d8;hp=fd1d8e48aa57f98ea8bf91ba1be23ca19d0e5413;hb=7a3b4a33993cd79bb5e8cb34fefb0e7ee6ce602f;hpb=aca65426b302c44e2c88f4e67a08be6096d07447 diff --git a/dali-toolkit/internal/text/multi-language-support-impl.cpp b/dali-toolkit/internal/text/multi-language-support-impl.cpp index fd1d8e4..82470f8 100644 --- a/dali-toolkit/internal/text/multi-language-support-impl.cpp +++ b/dali-toolkit/internal/text/multi-language-support-impl.cpp @@ -1,5 +1,5 @@ /* - * Copyright (c) 2017 Samsung Electronics Co., Ltd. + * Copyright (c) 2021 Samsung Electronics Co., Ltd. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -19,19 +19,17 @@ #include // EXTERNAL INCLUDES -#include -#include +#include #include +#include // INTERNAL INCLUDES #include namespace Dali { - namespace Toolkit { - namespace { #if defined(DEBUG_ENABLED) @@ -39,22 +37,20 @@ Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, true, "LOG_MULT #endif const Dali::Toolkit::Text::Character UTF32_A = 0x0041; -} +} // namespace namespace Text { - namespace Internal { - -bool ValidateFontsPerScript::IsValidFont( FontId fontId ) const +bool ValidateFontsPerScript::IsValidFont(FontId fontId) const { - for( Vector::ConstIterator it = mValidFonts.Begin(), - endIt = mValidFonts.End(); - it != endIt; - ++it ) + for(Vector::ConstIterator it = mValidFonts.Begin(), + endIt = mValidFonts.End(); + it != endIt; + ++it) { - if( fontId == *it ) + if(fontId == *it) { return true; } @@ -63,22 +59,22 @@ bool ValidateFontsPerScript::IsValidFont( FontId fontId ) const return false; } -FontId DefaultFonts::FindFont( TextAbstraction::FontClient& fontClient, - const TextAbstraction::FontDescription& description, - PointSize26Dot6 size ) const +FontId DefaultFonts::FindFont(TextAbstraction::FontClient& fontClient, + const TextAbstraction::FontDescription& description, + PointSize26Dot6 size) const { - for( std::vector::const_iterator it = mFonts.begin(), - endIt = mFonts.end(); - it != endIt; - ++it ) + for(std::vector::const_iterator it = mFonts.begin(), + endIt = mFonts.end(); + it != endIt; + ++it) { const CacheItem& item = *it; - if( ( ( TextAbstraction::FontWeight::NONE == description.weight ) || ( description.weight == item.description.weight ) ) && - ( ( TextAbstraction::FontWidth::NONE == description.width ) || ( description.width == item.description.width ) ) && - ( ( TextAbstraction::FontSlant::NONE == description.slant ) || ( description.slant == item.description.slant ) ) && - ( size == fontClient.GetPointSize( item.fontId ) ) && - ( description.family.empty() || ( description.family == item.description.family ) ) ) + if(((TextAbstraction::FontWeight::NONE == description.weight) || (description.weight == item.description.weight)) && + ((TextAbstraction::FontWidth::NONE == description.width) || (description.width == item.description.width)) && + ((TextAbstraction::FontSlant::NONE == description.slant) || (description.slant == item.description.slant)) && + (size == fontClient.GetPointSize(item.fontId)) && + (description.family.empty() || (description.family == item.description.family))) { return item.fontId; } @@ -87,12 +83,12 @@ FontId DefaultFonts::FindFont( TextAbstraction::FontClient& fontClient, return 0u; } -void DefaultFonts::Cache( const TextAbstraction::FontDescription& description, FontId fontId ) +void DefaultFonts::Cache(const TextAbstraction::FontDescription& description, FontId fontId) { CacheItem item; item.description = description; - item.fontId = fontId; - mFonts.push_back( item ); + item.fontId = fontId; + mFonts.push_back(item); } MultilanguageSupport::MultilanguageSupport() @@ -101,29 +97,29 @@ MultilanguageSupport::MultilanguageSupport() { // Initializes the default font cache to zero (invalid font). // Reserves space to cache the default fonts and access them with the script as an index. - mDefaultFontPerScriptCache.Resize( TextAbstraction::UNKNOWN, NULL ); + mDefaultFontPerScriptCache.Resize(TextAbstraction::UNKNOWN + 1, NULL); // Initializes the valid fonts cache to NULL (no valid fonts). // Reserves space to cache the valid fonts and access them with the script as an index. - mValidFontsPerScriptCache.Resize( TextAbstraction::UNKNOWN, NULL ); + mValidFontsPerScriptCache.Resize(TextAbstraction::UNKNOWN + 1, NULL); } MultilanguageSupport::~MultilanguageSupport() { // Destroy the default font per script cache. - for( Vector::Iterator it = mDefaultFontPerScriptCache.Begin(), - endIt = mDefaultFontPerScriptCache.End(); - it != endIt; - ++it ) + for(Vector::Iterator it = mDefaultFontPerScriptCache.Begin(), + endIt = mDefaultFontPerScriptCache.End(); + it != endIt; + ++it) { delete *it; } // Destroy the valid fonts per script cache. - for( Vector::Iterator it = mValidFontsPerScriptCache.Begin(), - endIt = mValidFontsPerScriptCache.End(); - it != endIt; - ++it ) + for(Vector::Iterator it = mValidFontsPerScriptCache.Begin(), + endIt = mValidFontsPerScriptCache.End(); + it != endIt; + ++it) { delete *it; } @@ -133,33 +129,33 @@ Text::MultilanguageSupport MultilanguageSupport::Get() { Text::MultilanguageSupport multilanguageSupportHandle; - SingletonService service( SingletonService::Get() ); - if( service ) + SingletonService service(SingletonService::Get()); + if(service) { // Check whether the singleton is already created - Dali::BaseHandle handle = service.GetSingleton( typeid( Text::MultilanguageSupport ) ); - if( handle ) + Dali::BaseHandle handle = service.GetSingleton(typeid(Text::MultilanguageSupport)); + if(handle) { // If so, downcast the handle - MultilanguageSupport* impl = dynamic_cast< Internal::MultilanguageSupport* >( handle.GetObjectPtr() ); - multilanguageSupportHandle = Text::MultilanguageSupport( impl ); + MultilanguageSupport* impl = dynamic_cast(handle.GetObjectPtr()); + multilanguageSupportHandle = Text::MultilanguageSupport(impl); } else // create and register the object { - multilanguageSupportHandle = Text::MultilanguageSupport( new MultilanguageSupport ); - service.Register( typeid( multilanguageSupportHandle ), multilanguageSupportHandle ); + multilanguageSupportHandle = Text::MultilanguageSupport(new MultilanguageSupport); + service.Register(typeid(multilanguageSupportHandle), multilanguageSupportHandle); } } return multilanguageSupportHandle; } -void MultilanguageSupport::SetScripts( const Vector& text, - CharacterIndex startIndex, - Length numberOfCharacters, - Vector& scripts ) +void MultilanguageSupport::SetScripts(const Vector& text, + CharacterIndex startIndex, + Length numberOfCharacters, + Vector& scripts) { - if( 0u == numberOfCharacters ) + if(0u == numberOfCharacters) { // Nothing to do if there are no characters. return; @@ -167,15 +163,15 @@ void MultilanguageSupport::SetScripts( const Vector& text, // Find the first index where to insert the script. ScriptRunIndex scriptIndex = 0u; - if( 0u != startIndex ) + if(0u != startIndex) { - for( Vector::ConstIterator it = scripts.Begin(), - endIt = scripts.End(); - it != endIt; - ++it, ++scriptIndex ) + for(Vector::ConstIterator it = scripts.Begin(), + endIt = scripts.End(); + it != endIt; + ++it, ++scriptIndex) { const ScriptRun& run = *it; - if( startIndex < run.characterRun.characterIndex + run.characterRun.numberOfCharacters ) + if(startIndex < run.characterRun.characterIndex + run.characterRun.numberOfCharacters) { // Run found. break; @@ -185,12 +181,12 @@ void MultilanguageSupport::SetScripts( const Vector& text, // Stores the current script run. ScriptRun currentScriptRun; - currentScriptRun.characterRun.characterIndex = startIndex; + currentScriptRun.characterRun.characterIndex = startIndex; currentScriptRun.characterRun.numberOfCharacters = 0u; - currentScriptRun.script = TextAbstraction::UNKNOWN; + currentScriptRun.script = TextAbstraction::UNKNOWN; // Reserve some space to reduce the number of reallocations. - scripts.Reserve( text.Count() << 2u ); + scripts.Reserve(text.Count() << 2u); // Whether the first valid script needs to be set. bool isFirstScriptToBeSet = true; @@ -204,14 +200,17 @@ void MultilanguageSupport::SetScripts( const Vector& text, // Pointers to the text buffer. const Character* const textBuffer = text.Begin(); + // Initialize whether is right to left direction + currentScriptRun.isRightToLeft = false; + // Traverse all characters and set the scripts. const Length lastCharacter = startIndex + numberOfCharacters; - for( Length index = startIndex; index < lastCharacter; ++index ) + for(Length index = startIndex; index < lastCharacter; ++index) { - Character character = *( textBuffer + index ); + Character character = *(textBuffer + index); // Get the script of the character. - Script script = TextAbstraction::GetCharacterScript( character ); + Script script = TextAbstraction::GetCharacterScript(character); // Some characters (like white spaces) are valid for many scripts. The rules to set a script // for them are: @@ -223,26 +222,30 @@ void MultilanguageSupport::SetScripts( const Vector& text, // Skip those characters valid for many scripts like white spaces or '\n'. bool endOfText = index == lastCharacter; - while( !endOfText && - ( TextAbstraction::COMMON == script ) ) + while(!endOfText && + (TextAbstraction::COMMON == script)) { - if( TextAbstraction::EMOJI == currentScriptRun.script ) + // Check if whether is right to left markup and Keeps true if the previous value was true. + currentScriptRun.isRightToLeft = currentScriptRun.isRightToLeft || TextAbstraction::IsRightToLeftMark(character); + + // ZWJ, ZWNJ between emojis should be treated as EMOJI. + if(TextAbstraction::EMOJI == currentScriptRun.script && !(TextAbstraction::IsZeroWidthJoiner(character) || TextAbstraction::IsZeroWidthNonJoiner(character))) { // Emojis doesn't mix well with characters common to all scripts. Insert the emoji run. - scripts.Insert( scripts.Begin() + scriptIndex, currentScriptRun ); + scripts.Insert(scripts.Begin() + scriptIndex, currentScriptRun); ++scriptIndex; // Initialize the new one. - currentScriptRun.characterRun.characterIndex = currentScriptRun.characterRun.characterIndex + currentScriptRun.characterRun.numberOfCharacters; + currentScriptRun.characterRun.characterIndex = currentScriptRun.characterRun.characterIndex + currentScriptRun.characterRun.numberOfCharacters; currentScriptRun.characterRun.numberOfCharacters = 0u; - currentScriptRun.script = TextAbstraction::UNKNOWN; - numberOfAllScriptCharacters = 0u; + currentScriptRun.script = TextAbstraction::UNKNOWN; + numberOfAllScriptCharacters = 0u; } // Count all these characters to be added into a script. ++numberOfAllScriptCharacters; - if( TextAbstraction::IsNewParagraph( character ) ) + if(TextAbstraction::IsNewParagraph(character)) { // The character is a new paragraph. // To know when there is a new paragraph is needed because if there is a white space @@ -254,31 +257,29 @@ void MultilanguageSupport::SetScripts( const Vector& text, currentScriptRun.characterRun.numberOfCharacters += numberOfAllScriptCharacters; // Store the script run. - if( TextAbstraction::UNKNOWN == currentScriptRun.script ) - { - currentScriptRun.script = TextAbstraction::LATIN; - } - scripts.Insert( scripts.Begin() + scriptIndex, currentScriptRun ); + scripts.Insert(scripts.Begin() + scriptIndex, currentScriptRun); ++scriptIndex; // Initialize the new one. - currentScriptRun.characterRun.characterIndex = currentScriptRun.characterRun.characterIndex + currentScriptRun.characterRun.numberOfCharacters; + currentScriptRun.characterRun.characterIndex = currentScriptRun.characterRun.characterIndex + currentScriptRun.characterRun.numberOfCharacters; currentScriptRun.characterRun.numberOfCharacters = 0u; - currentScriptRun.script = TextAbstraction::UNKNOWN; - numberOfAllScriptCharacters = 0u; + currentScriptRun.script = TextAbstraction::UNKNOWN; + numberOfAllScriptCharacters = 0u; + // Initialize whether is right to left direction + currentScriptRun.isRightToLeft = false; } // Get the next character. ++index; endOfText = index == lastCharacter; - if( !endOfText ) + if(!endOfText) { - character = *( textBuffer + index ); - script = TextAbstraction::GetCharacterScript( character ); + character = *(textBuffer + index); + script = TextAbstraction::GetCharacterScript(character); } } // end while( !endOfText && ( TextAbstraction::COMMON == script ) ) - if( endOfText ) + if(endOfText) { // Last characters of the text are 'white spaces'. // There is nothing else to do. Just add the remaining characters to the last script after this bucle. @@ -286,61 +287,62 @@ void MultilanguageSupport::SetScripts( const Vector& text, } // Check if it is the first character of a paragraph. - if( isFirstScriptToBeSet && - ( TextAbstraction::UNKNOWN != script ) && - ( TextAbstraction::COMMON != script ) && - ( TextAbstraction::EMOJI != script ) ) + if(isFirstScriptToBeSet && + (TextAbstraction::UNKNOWN != script) && + (TextAbstraction::COMMON != script) && + (TextAbstraction::EMOJI != script)) { // Sets the direction of the first valid script. - isParagraphRTL = TextAbstraction::IsRightToLeftScript( script ); + isParagraphRTL = currentScriptRun.isRightToLeft || TextAbstraction::IsRightToLeftScript(script); isFirstScriptToBeSet = false; } - if( ( script != currentScriptRun.script ) && - ( TextAbstraction::COMMON != script ) ) + if((script != currentScriptRun.script) && + (TextAbstraction::COMMON != script)) { // Current run needs to be stored and a new one initialized. - if( ( isParagraphRTL == TextAbstraction::IsRightToLeftScript( currentScriptRun.script ) ) && - ( TextAbstraction::UNKNOWN != currentScriptRun.script ) ) + if((isParagraphRTL == TextAbstraction::IsRightToLeftScript(currentScriptRun.script)) && + (TextAbstraction::UNKNOWN != currentScriptRun.script)) { // Previous script has the same direction than the first script of the paragraph. // All the previously skipped characters need to be added to the previous script before it's stored. currentScriptRun.characterRun.numberOfCharacters += numberOfAllScriptCharacters; numberOfAllScriptCharacters = 0u; } - else if( ( TextAbstraction::IsRightToLeftScript( currentScriptRun.script ) == TextAbstraction::IsRightToLeftScript( script ) ) && - ( TextAbstraction::UNKNOWN != currentScriptRun.script ) ) + else if((TextAbstraction::IsRightToLeftScript(currentScriptRun.script) == TextAbstraction::IsRightToLeftScript(script)) && + (TextAbstraction::UNKNOWN != currentScriptRun.script)) { // Current script and previous one have the same direction. // All the previously skipped characters need to be added to the previous script before it's stored. currentScriptRun.characterRun.numberOfCharacters += numberOfAllScriptCharacters; numberOfAllScriptCharacters = 0u; } - else if( ( TextAbstraction::UNKNOWN == currentScriptRun.script ) && - ( TextAbstraction::EMOJI == script ) ) + else if((TextAbstraction::UNKNOWN == currentScriptRun.script) && + (TextAbstraction::EMOJI == script)) { - currentScriptRun.script = TextAbstraction::LATIN; currentScriptRun.characterRun.numberOfCharacters += numberOfAllScriptCharacters; numberOfAllScriptCharacters = 0u; } - if( 0u != currentScriptRun.characterRun.numberOfCharacters ) + if(0u != currentScriptRun.characterRun.numberOfCharacters) { // Store the script run. - scripts.Insert( scripts.Begin() + scriptIndex, currentScriptRun ); + scripts.Insert(scripts.Begin() + scriptIndex, currentScriptRun); ++scriptIndex; } // Initialize the new one. - currentScriptRun.characterRun.characterIndex = currentScriptRun.characterRun.characterIndex + currentScriptRun.characterRun.numberOfCharacters; + currentScriptRun.characterRun.characterIndex = currentScriptRun.characterRun.characterIndex + currentScriptRun.characterRun.numberOfCharacters; currentScriptRun.characterRun.numberOfCharacters = numberOfAllScriptCharacters + 1u; // Adds the white spaces which are at the begining of the script. - currentScriptRun.script = script; - numberOfAllScriptCharacters = 0u; + currentScriptRun.script = script; + numberOfAllScriptCharacters = 0u; + // Check if whether is right to left script. + currentScriptRun.isRightToLeft = TextAbstraction::IsRightToLeftScript(currentScriptRun.script); } else { - if( TextAbstraction::UNKNOWN != currentScriptRun.script ) + if(TextAbstraction::UNKNOWN != currentScriptRun.script) { // Adds white spaces between characters. currentScriptRun.characterRun.numberOfCharacters += numberOfAllScriptCharacters; @@ -355,66 +357,60 @@ void MultilanguageSupport::SetScripts( const Vector& text, // Add remaining characters into the last script. currentScriptRun.characterRun.numberOfCharacters += numberOfAllScriptCharacters; - if( 0u != currentScriptRun.characterRun.numberOfCharacters ) + if(0u != currentScriptRun.characterRun.numberOfCharacters) { - if( TextAbstraction::UNKNOWN == currentScriptRun.script ) - { - // There are only white spaces in the last script. Set the latin script. - currentScriptRun.script = TextAbstraction::LATIN; - } - // Store the last run. - scripts.Insert( scripts.Begin() + scriptIndex, currentScriptRun ); + scripts.Insert(scripts.Begin() + scriptIndex, currentScriptRun); ++scriptIndex; } - if( scriptIndex < scripts.Count() ) + if(scriptIndex < scripts.Count()) { // Update the indices of the next script runs. - const ScriptRun& run = *( scripts.Begin() + scriptIndex - 1u ); - CharacterIndex nextCharacterIndex = run.characterRun.characterIndex + run.characterRun.numberOfCharacters; + const ScriptRun& run = *(scripts.Begin() + scriptIndex - 1u); + CharacterIndex nextCharacterIndex = run.characterRun.characterIndex + run.characterRun.numberOfCharacters; - for( Vector::Iterator it = scripts.Begin() + scriptIndex, - endIt = scripts.End(); - it != endIt; - ++it ) + for(Vector::Iterator it = scripts.Begin() + scriptIndex, + endIt = scripts.End(); + it != endIt; + ++it) { - ScriptRun& run = *it; + ScriptRun& run = *it; run.characterRun.characterIndex = nextCharacterIndex; nextCharacterIndex += run.characterRun.numberOfCharacters; } } } -void MultilanguageSupport::ValidateFonts( const Vector& text, - const Vector& scripts, - const Vector& fontDescriptions, - const TextAbstraction::FontDescription& defaultFontDescription, - TextAbstraction::PointSize26Dot6 defaultFontPointSize, - CharacterIndex startIndex, - Length numberOfCharacters, - Vector& fonts ) +void MultilanguageSupport::ValidateFonts(const Vector& text, + const Vector& scripts, + const Vector& fontDescriptions, + const TextAbstraction::FontDescription& defaultFontDescription, + TextAbstraction::PointSize26Dot6 defaultFontPointSize, + CharacterIndex startIndex, + Length numberOfCharacters, + Vector& fonts) { - DALI_LOG_INFO( gLogFilter, Debug::General, "-->MultilanguageSupport::ValidateFonts\n" ); + DALI_LOG_INFO(gLogFilter, Debug::General, "-->MultilanguageSupport::ValidateFonts\n"); - if( 0u == numberOfCharacters ) + if(0u == numberOfCharacters) { - DALI_LOG_INFO( gLogFilter, Debug::General, "<--MultilanguageSupport::ValidateFonts\n" ); + DALI_LOG_INFO(gLogFilter, Debug::General, "<--MultilanguageSupport::ValidateFonts\n"); // Nothing to do if there are no characters. return; } // Find the first index where to insert the font run. FontRunIndex fontIndex = 0u; - if( 0u != startIndex ) + if(0u != startIndex) { - for( Vector::ConstIterator it = fonts.Begin(), - endIt = fonts.End(); - it != endIt; - ++it, ++fontIndex ) + for(Vector::ConstIterator it = fonts.Begin(), + endIt = fonts.End(); + it != endIt; + ++it, ++fontIndex) { const FontRun& run = *it; - if( startIndex < run.characterRun.characterIndex + run.characterRun.numberOfCharacters ) + if(startIndex < run.characterRun.characterIndex + run.characterRun.numberOfCharacters) { // Run found. break; @@ -425,17 +421,19 @@ void MultilanguageSupport::ValidateFonts( const Vector& text, // Traverse the characters and validate/set the fonts. // Get the caches. - DefaultFonts** defaultFontPerScriptCacheBuffer = mDefaultFontPerScriptCache.Begin(); - ValidateFontsPerScript** validFontsPerScriptCacheBuffer = mValidFontsPerScriptCache.Begin(); + DefaultFonts** defaultFontPerScriptCacheBuffer = mDefaultFontPerScriptCache.Begin(); + ValidateFontsPerScript** validFontsPerScriptCacheBuffer = mValidFontsPerScriptCache.Begin(); // Stores the validated font runs. - fonts.Reserve( fontDescriptions.Count() ); + fonts.Reserve(fontDescriptions.Count()); // Initializes a validated font run. FontRun currentFontRun; - currentFontRun.characterRun.characterIndex = startIndex; + currentFontRun.characterRun.characterIndex = startIndex; currentFontRun.characterRun.numberOfCharacters = 0u; - currentFontRun.fontId = 0u; + currentFontRun.fontId = 0u; + currentFontRun.isBoldRequired = false; + currentFontRun.isItalicRequired = false; // Get the font client. TextAbstraction::FontClient fontClient = TextAbstraction::FontClient::Get(); @@ -443,100 +441,111 @@ void MultilanguageSupport::ValidateFonts( const Vector& text, const Character* const textBuffer = text.Begin(); // Iterators of the script runs. - Vector::ConstIterator scriptRunIt = scripts.Begin(); - Vector::ConstIterator scriptRunEndIt = scripts.End(); - bool isNewParagraphCharacter = false; + Vector::ConstIterator scriptRunIt = scripts.Begin(); + Vector::ConstIterator scriptRunEndIt = scripts.End(); + bool isNewParagraphCharacter = false; - FontId currentFontId = 0u; - FontId previousFontId = 0u; - bool isPreviousEmojiScript = false; - - // Whether it's the first set of characters to be validated. - // Used in case the paragraph starts with characters common to all scripts. - bool isFirstSetToBeValidated = true; + bool isPreviousEmojiScript = false; + FontId previousEmojiFontId = 0u; CharacterIndex lastCharacter = startIndex + numberOfCharacters; - for( Length index = startIndex; index < lastCharacter; ++index ) + for(Length index = startIndex; index < lastCharacter; ++index) { // Get the current character. - const Character character = *( textBuffer + index ); + const Character character = *(textBuffer + index); + bool isItalicRequired = false; + bool isBoldRequired = false; + // new description for current character TextAbstraction::FontDescription currentFontDescription; TextAbstraction::PointSize26Dot6 currentFontPointSize = defaultFontPointSize; - bool isDefaultFont = true; - MergeFontDescriptions( fontDescriptions, - defaultFontDescription, - defaultFontPointSize, - index, - currentFontDescription, - currentFontPointSize, - isDefaultFont ); + bool isDefaultFont = true; + MergeFontDescriptions(fontDescriptions, + defaultFontDescription, + defaultFontPointSize, + index, + currentFontDescription, + currentFontPointSize, + isDefaultFont); // Get the font for the current character. - FontId fontId = fontClient.GetFontId( currentFontDescription, currentFontPointSize ); - currentFontId = fontId; + FontId fontId = fontClient.GetFontId(currentFontDescription, currentFontPointSize); // Get the script for the current character. - Script script = GetScript( index, - scriptRunIt, - scriptRunEndIt ); + Script script = GetScript(index, + scriptRunIt, + scriptRunEndIt); #ifdef DEBUG_ENABLED { Dali::TextAbstraction::FontDescription description; - fontClient.GetDescription( fontId, description ); - - DALI_LOG_INFO( gLogFilter, - Debug::Verbose, - " Initial font set\n Character : %x, Script : %s, Font : %s \n", - character, - Dali::TextAbstraction::ScriptName[script], - description.path.c_str() ); + fontClient.GetDescription(fontId, description); + + DALI_LOG_INFO(gLogFilter, + Debug::Verbose, + " Initial font set\n Character : %x, Script : %s, Font : %s \n", + character, + Dali::TextAbstraction::ScriptName[script], + description.path.c_str()); } #endif - if (script == TextAbstraction::UNKNOWN) - { - script = TextAbstraction::LATIN; - } // Validate whether the current character is supported by the given font. bool isValidFont = false; // Check first in the cache of default fonts per script and size. - DefaultFonts* defaultFonts = *( defaultFontPerScriptCacheBuffer + script ); - FontId cachedDefaultFontId = 0u; - if( NULL != defaultFonts ) + FontId cachedDefaultFontId = 0u; + DefaultFonts* defaultFonts = *(defaultFontPerScriptCacheBuffer + script); + if(NULL != defaultFonts) { - cachedDefaultFontId = defaultFonts->FindFont( fontClient, - currentFontDescription, - currentFontPointSize ); + // This cache stores fall-back fonts. + cachedDefaultFontId = defaultFonts->FindFont(fontClient, + currentFontDescription, + currentFontPointSize); } // Whether the cached default font is valid. const bool isValidCachedDefaultFont = 0u != cachedDefaultFontId; // The font is valid if it matches with the default one for the current script and size and it's different than zero. - isValidFont = isValidCachedDefaultFont && ( fontId == cachedDefaultFontId ); + isValidFont = isValidCachedDefaultFont && (fontId == cachedDefaultFontId); + + if(isValidFont) + { + // Check if the font supports the character. + isValidFont = fontClient.IsCharacterSupportedByFont(fontId, character); + } bool isCommonScript = false; - bool isEmojiScript = TextAbstraction::EMOJI == script; + bool isEmojiScript = TextAbstraction::EMOJI == script; - if( isEmojiScript && !isPreviousEmojiScript ) + if(isEmojiScript && !isPreviousEmojiScript) { - if( 0u != currentFontRun.characterRun.numberOfCharacters ) + if(0u != currentFontRun.characterRun.numberOfCharacters) { // Store the font run. - fonts.Insert( fonts.Begin() + fontIndex, currentFontRun ); + fonts.Insert(fonts.Begin() + fontIndex, currentFontRun); ++fontIndex; } // Initialize the new one. - currentFontRun.characterRun.characterIndex = currentFontRun.characterRun.characterIndex + currentFontRun.characterRun.numberOfCharacters; + currentFontRun.characterRun.characterIndex = currentFontRun.characterRun.characterIndex + currentFontRun.characterRun.numberOfCharacters; currentFontRun.characterRun.numberOfCharacters = 0u; - currentFontRun.fontId = fontId; + currentFontRun.fontId = fontId; + currentFontRun.isItalicRequired = false; + currentFontRun.isBoldRequired = false; } + // ZWJ, ZWNJ between emojis should use the previous emoji font. + if(isEmojiScript && (TextAbstraction::IsZeroWidthJoiner(character) || TextAbstraction::IsZeroWidthNonJoiner(character))) + { + if(0u != previousEmojiFontId) + { + fontId = previousEmojiFontId; + isValidFont = true; + } + } // If the given font is not valid, it means either: // - there is no cached font for the current script yet or, @@ -544,7 +553,7 @@ void MultilanguageSupport::ValidateFonts( const Vector& text, // - the platform default font is different than the default font for the current script. // Need to check if the given font supports the current character. - if( !isValidFont ) // (1) + if(!isValidFont) // (1) { // Whether the current character is common for all scripts (i.e. white spaces, ...) @@ -558,186 +567,174 @@ void MultilanguageSupport::ValidateFonts( const Vector& text, // // Many fonts support 'white spaces' so probably the font set by the user or the platform's default // supports the 'white space'. However, that font may not support the DEVANAGARI script. - isCommonScript = TextAbstraction::IsCommonScript( character ); + isCommonScript = TextAbstraction::IsCommonScript(character); + + // Check in the valid fonts cache. + ValidateFontsPerScript* validateFontsPerScript = *(validFontsPerScriptCacheBuffer + script); - if( isCommonScript ) + if(NULL != validateFontsPerScript) { - if( isValidCachedDefaultFont && - ( isDefaultFont || ( currentFontId == previousFontId ) ) && - !isEmojiScript ) + // This cache stores valid fonts set by the user. + isValidFont = validateFontsPerScript->IsValidFont(fontId); + + // It may happen that a validated font for a script doesn't have all the glyphs for that script. + // i.e a font validated for the CJK script may contain glyphs for the chinese language but not for the Japanese. + if(isValidFont) { - // At this point the character common for all scripts has no font assigned. - // If there is a valid previously cached default font for it, use that one. - fontId = cachedDefaultFontId; + // Checks if the current character is supported by the font is needed. + isValidFont = fontClient.IsCharacterSupportedByFont(fontId, character); } } - else + + if(!isValidFont) // (2) { - // Check in the valid fonts cache. - ValidateFontsPerScript* validateFontsPerScript = *( validFontsPerScriptCacheBuffer + script ); + // The selected font is not stored in any cache. - if( NULL != validateFontsPerScript ) + // Checks if the current character is supported by the selected font. + isValidFont = fontClient.IsCharacterSupportedByFont(fontId, character); + + // If there is a valid font, cache it. + if(isValidFont && !isCommonScript) { - isValidFont = validateFontsPerScript->IsValidFont( fontId ); + if(NULL == validateFontsPerScript) + { + validateFontsPerScript = new ValidateFontsPerScript(); + + *(validFontsPerScriptCacheBuffer + script) = validateFontsPerScript; + } + + validateFontsPerScript->mValidFonts.PushBack(fontId); } - if( !isValidFont ) // (2) + if(!isValidFont && (fontId != cachedDefaultFontId) && (!TextAbstraction::IsNewParagraph(character))) // (3) { - // Use the font client to validate the font. - const GlyphIndex glyphIndex = fontClient.GetGlyphIndex( fontId, character ); - - // The font is valid if there is a glyph for that character. - isValidFont = 0u != glyphIndex; + // The selected font by the user or the platform's default font has failed to validate the character. - // Emojis are present in many monochrome fonts; prefer color by default. - if( isValidFont && - isEmojiScript ) + // Checks if the previously discarted cached default font supports the character. + bool isValidCachedFont = false; + if(isValidCachedDefaultFont) { - // For color emojis, the font is valid if the glyph is a color glyph (the bitmap is RGBA). - isValidFont = fontClient.IsColorGlyph( fontId, glyphIndex ); + isValidCachedFont = fontClient.IsCharacterSupportedByFont(cachedDefaultFontId, character); } - // If there is a valid font, cache it. - if( isValidFont ) + if(isValidCachedFont) { - if( NULL == validateFontsPerScript ) - { - validateFontsPerScript = new ValidateFontsPerScript(); - - *( validFontsPerScriptCacheBuffer + script ) = validateFontsPerScript; - } - - validateFontsPerScript->mValidFonts.PushBack( fontId ); + // Use the cached default font for the script if there is one. + fontId = cachedDefaultFontId; } - - if( !isValidFont ) // (3) + else { - // The given font has not been validated. + // There is no valid cached default font for the script. - if( isValidCachedDefaultFont ) - { - // Use the cached default font for the script if there is one. - fontId = cachedDefaultFontId; - } - else - { - // There is no valid cached default font for the script. - - DefaultFonts* defaultFontsPerScript = NULL; - - // Emojis are present in many monochrome fonts; prefer color by default. - const bool preferColor = ( TextAbstraction::EMOJI == script ); - - // Find a fallback-font. - fontId = fontClient.FindFallbackFont( character, - currentFontDescription, - currentFontPointSize, - preferColor ); + DefaultFonts* defaultFontsPerScript = NULL; - if( 0u == fontId ) - { - // If the system does not support a suitable font, fallback to Latin - defaultFontsPerScript = *( defaultFontPerScriptCacheBuffer + TextAbstraction::LATIN ); - if( NULL != defaultFontsPerScript ) - { - fontId = defaultFontsPerScript->FindFont( fontClient, - currentFontDescription, - currentFontPointSize ); - } - } + // Find a fallback-font. + fontId = fontClient.FindFallbackFont(character, + currentFontDescription, + currentFontPointSize, + false); - if( 0u == fontId ) - { - fontId = fontClient.FindDefaultFont( UTF32_A, currentFontPointSize ); - } + if(0u == fontId) + { + fontId = fontClient.FindDefaultFont(UTF32_A, currentFontPointSize); + } - // Cache the font. - if( NULL == defaultFontsPerScript ) + if(!isCommonScript && (script != TextAbstraction::UNKNOWN)) + { + // Cache the font if it is not an unknown script + if(NULL == defaultFontsPerScript) { - defaultFontsPerScript = *( defaultFontPerScriptCacheBuffer + script ); + defaultFontsPerScript = *(defaultFontPerScriptCacheBuffer + script); - if( NULL == defaultFontsPerScript ) + if(NULL == defaultFontsPerScript) { - defaultFontsPerScript = new DefaultFonts(); - *( defaultFontPerScriptCacheBuffer + script ) = defaultFontsPerScript; + defaultFontsPerScript = new DefaultFonts(); + *(defaultFontPerScriptCacheBuffer + script) = defaultFontsPerScript; } } - defaultFontsPerScript->Cache( currentFontDescription, fontId ); + defaultFontsPerScript->Cache(currentFontDescription, fontId); } - } // !isValidFont (3) - } // !isValidFont (2) - } // !isCommonScript - } // !isValidFont (1) + } + } // !isValidFont (3) + } // !isValidFont (2) + } // !isValidFont (1) + + // Store the font id when the first character is an emoji. + if(isEmojiScript && !isPreviousEmojiScript) + { + if(0u != fontId) + { + previousEmojiFontId = fontId; + } + } #ifdef DEBUG_ENABLED { Dali::TextAbstraction::FontDescription description; - fontClient.GetDescription( fontId, description ); - DALI_LOG_INFO( gLogFilter, - Debug::Verbose, - " Validated font set\n Character : %x, Script : %s, Font : %s \n", - character, - Dali::TextAbstraction::ScriptName[script], - description.path.c_str() ); + fontClient.GetDescription(fontId, description); + DALI_LOG_INFO(gLogFilter, + Debug::Verbose, + " Validated font set\n Character : %x, Script : %s, Font : %s \n", + character, + Dali::TextAbstraction::ScriptName[script], + description.path.c_str()); } #endif - if( isFirstSetToBeValidated && !isCommonScript ) - { - currentFontRun.fontId = fontId; - isFirstSetToBeValidated = false; - } + // Whether bols style is required. + isBoldRequired = (currentFontDescription.weight >= TextAbstraction::FontWeight::BOLD); + + // Whether italic style is required. + isItalicRequired = (currentFontDescription.slant >= TextAbstraction::FontSlant::ITALIC); // The font is now validated. - if( ( fontId != currentFontRun.fontId ) || - isNewParagraphCharacter ) + if((fontId != currentFontRun.fontId) || + isNewParagraphCharacter || + // If font id is same as previous but style is diffrent, initialize new one + ((fontId == currentFontRun.fontId) && ((isBoldRequired != currentFontRun.isBoldRequired) || (isItalicRequired != currentFontRun.isItalicRequired)))) { // Current run needs to be stored and a new one initialized. - if( 0u != currentFontRun.characterRun.numberOfCharacters ) + if(0u != currentFontRun.characterRun.numberOfCharacters) { // Store the font run. - fonts.Insert( fonts.Begin() + fontIndex, currentFontRun ); + fonts.Insert(fonts.Begin() + fontIndex, currentFontRun); ++fontIndex; } // Initialize the new one. - currentFontRun.characterRun.characterIndex = currentFontRun.characterRun.characterIndex + currentFontRun.characterRun.numberOfCharacters; + currentFontRun.characterRun.characterIndex = currentFontRun.characterRun.characterIndex + currentFontRun.characterRun.numberOfCharacters; currentFontRun.characterRun.numberOfCharacters = 0u; - currentFontRun.fontId = fontId; - - if( isNewParagraphCharacter ) - { - isFirstSetToBeValidated = true; - } + currentFontRun.fontId = fontId; + currentFontRun.isBoldRequired = isBoldRequired; + currentFontRun.isItalicRequired = isItalicRequired; } // Add one more character to the run. ++currentFontRun.characterRun.numberOfCharacters; // Whether the current character is a new paragraph character. - isNewParagraphCharacter = TextAbstraction::IsNewParagraph( character ); - previousFontId = currentFontId; - isPreviousEmojiScript = isEmojiScript; + isNewParagraphCharacter = TextAbstraction::IsNewParagraph(character); + isPreviousEmojiScript = isEmojiScript; } // end traverse characters. - if( 0u != currentFontRun.characterRun.numberOfCharacters ) + if(0u != currentFontRun.characterRun.numberOfCharacters) { // Store the last run. - fonts.Insert( fonts.Begin() + fontIndex, currentFontRun ); + fonts.Insert(fonts.Begin() + fontIndex, currentFontRun); ++fontIndex; } - if( fontIndex < fonts.Count() ) + if(fontIndex < fonts.Count()) { // Update the indices of the next font runs. - const FontRun& run = *( fonts.Begin() + fontIndex - 1u ); + const FontRun& run = *(fonts.Begin() + fontIndex - 1u); CharacterIndex nextCharacterIndex = run.characterRun.characterIndex + run.characterRun.numberOfCharacters; - for( Vector::Iterator it = fonts.Begin() + fontIndex, - endIt = fonts.End(); - it != endIt; - ++it ) + for(Vector::Iterator it = fonts.Begin() + fontIndex, + endIt = fonts.End(); + it != endIt; + ++it) { FontRun& run = *it; @@ -746,7 +743,7 @@ void MultilanguageSupport::ValidateFonts( const Vector& text, } } - DALI_LOG_INFO( gLogFilter, Debug::General, "<--MultilanguageSupport::ValidateFonts\n" ); + DALI_LOG_INFO(gLogFilter, Debug::General, "<--MultilanguageSupport::ValidateFonts\n"); } } // namespace Internal