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=d730c9e207ab4bdb04d38f71a36c28e4fd379f01;hp=27d0ee22b7dc6a5c2115dd67c5d1f2e09d82bd5c;hb=1c1a0aa8481233240396cf469f08e524b2d86021;hpb=1b2bbfd393cdd9008d15304278bc70e5d0ab5764 diff --git a/dali-toolkit/internal/text/multi-language-support-impl.cpp b/dali-toolkit/internal/text/multi-language-support-impl.cpp index 27d0ee2..d730c9e 100644 --- a/dali-toolkit/internal/text/multi-language-support-impl.cpp +++ b/dali-toolkit/internal/text/multi-language-support-impl.cpp @@ -19,16 +19,9 @@ #include // EXTERNAL INCLUDES -#include #include -#include -#include - -// INTERNAL INCLUDES -#include -#include -#include -#include +#include +#include namespace Dali { @@ -36,6 +29,15 @@ namespace Dali namespace Toolkit { +namespace +{ +#if defined(DEBUG_ENABLED) +Debug::Filter* gLogFilter = Debug::Filter::New(Debug::Concise, true, "LOG_MULTI_LANGUAGE_SUPPORT"); +#endif + +const Dali::Toolkit::Text::Character UTF32_A = 0x0041; +} + namespace Text { @@ -116,24 +118,6 @@ Script GetScript( Length index, return script; } -/** - * @brief Whether the character is valid for all scripts. i.e. the white space. - * - * @param[in] character The character. - * - * @return @e true if the character is valid for all scripts. - */ -bool IsValidForAllScripts( Character character ) -{ - return ( IsWhiteSpace( character ) || - IsZeroWidthNonJoiner( character ) || - IsZeroWidthJoiner( character ) || - IsZeroWidthSpace( character ) || - IsLeftToRightMark( character ) || - IsRightToLeftMark( character ) || - IsThinSpace( character ) ); -} - bool ValidateFontsPerScript::FindValidFont( FontId fontId ) const { for( Vector::ConstIterator it = mValidFonts.Begin(), @@ -202,7 +186,6 @@ Text::MultilanguageSupport MultilanguageSupport::Get() } void MultilanguageSupport::SetScripts( const Vector& text, - const Vector& lineBreakInfo, Vector& scripts ) { const Length numberOfCharacters = text.Count(); @@ -222,8 +205,8 @@ void MultilanguageSupport::SetScripts( const Vector& text, // Reserve some space to reduce the number of reallocations. scripts.Reserve( numberOfCharacters << 2u ); - // Whether the first valid script need to be set. - bool firstValidScript = true; + // Whether the first valid script needs to be set. + bool isFirstScriptToBeSet = true; // Whether the first valid script is a right to left script. bool isParagraphRTL = false; @@ -232,14 +215,15 @@ void MultilanguageSupport::SetScripts( const Vector& text, Length numberOfAllScriptCharacters = 0u; // Pointers to the text and break info buffers. - const Character* textBuffer = text.Begin(); - const LineBreakInfo* breakInfoBuffer = lineBreakInfo.Begin(); + const Character* const textBuffer = text.Begin(); // Traverse all characters and set the scripts. for( Length index = 0u; index < numberOfCharacters; ++index ) { Character character = *( textBuffer + index ); - LineBreakInfo breakInfo = *( breakInfoBuffer + index ); + + // Get the script of the 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: @@ -252,19 +236,25 @@ void MultilanguageSupport::SetScripts( const Vector& text, // Skip those characters valid for many scripts like white spaces or '\n'. bool endOfText = index == numberOfCharacters; while( !endOfText && - IsValidForAllScripts( character ) ) + ( TextAbstraction::COMMON == script ) ) { // Count all these characters to be added into a script. ++numberOfAllScriptCharacters; - if( TextAbstraction::LINE_MUST_BREAK == breakInfo ) + if( TextAbstraction::IsNewParagraph( character ) ) { - // The next character is a new paragraph. - // Know when there is a new paragraph is needed because if there is a white space + // The character is a new paragraph. + // To know when there is a new paragraph is needed because if there is a white space // between two scripts with different directions, it is added to the script with // the same direction than the first script of the paragraph. - firstValidScript = true; - isParagraphRTL = false; + isFirstScriptToBeSet = true; + + // Characters common to all scripts at the end of the paragraph are added to the last script (if the last one is not unknown). + if( TextAbstraction::UNKNOWN != currentScriptRun.script ) + { + currentScriptRun.characterRun.numberOfCharacters += numberOfAllScriptCharacters; + numberOfAllScriptCharacters = 0u; + } } // Get the next character. @@ -273,7 +263,7 @@ void MultilanguageSupport::SetScripts( const Vector& text, if( !endOfText ) { character = *( textBuffer + index ); - breakInfo = *( breakInfoBuffer + index ); + script = TextAbstraction::GetCharacterScript( character ); } } @@ -284,25 +274,33 @@ void MultilanguageSupport::SetScripts( const Vector& text, break; } - // Get the script of the character. - Script script = GetCharacterScript( character ); - // Check if it is the first character of a paragraph. - if( firstValidScript && - ( TextAbstraction::UNKNOWN != script ) ) + if( isFirstScriptToBeSet && + ( TextAbstraction::UNKNOWN != script ) && + ( TextAbstraction::COMMON != script ) ) { // Sets the direction of the first valid script. - isParagraphRTL = ( TextAbstraction::ARABIC == script ); - firstValidScript = false; + isParagraphRTL = TextAbstraction::IsRightToLeftScript( script ); + isFirstScriptToBeSet = false; } - if( script != currentScriptRun.script ) + if( ( script != currentScriptRun.script ) && + ( TextAbstraction::COMMON != script ) ) { // Current run needs to be stored and a new one initialized. - if( isParagraphRTL != ( TextAbstraction::ARABIC == script ) ) + if( ( isParagraphRTL == TextAbstraction::IsRightToLeftScript( currentScriptRun.script ) ) && + ( TextAbstraction::UNKNOWN != currentScriptRun.script ) ) { - // Current script has different direction than the first script of the paragraph. + // 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 ) ) + { + // 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; @@ -316,58 +314,49 @@ void MultilanguageSupport::SetScripts( const Vector& text, // Initialize the new one. currentScriptRun.characterRun.characterIndex = currentScriptRun.characterRun.characterIndex + currentScriptRun.characterRun.numberOfCharacters; - currentScriptRun.characterRun.numberOfCharacters = numberOfAllScriptCharacters; // Adds the white spaces which are at the begining of the script. + currentScriptRun.characterRun.numberOfCharacters = numberOfAllScriptCharacters + 1u; // Adds the white spaces which are at the begining of the script. currentScriptRun.script = script; numberOfAllScriptCharacters = 0u; } else { - // Adds white spaces between characters. - currentScriptRun.characterRun.numberOfCharacters += numberOfAllScriptCharacters; - numberOfAllScriptCharacters = 0u; - } + if( TextAbstraction::UNKNOWN != currentScriptRun.script ) + { + // Adds white spaces between characters. + currentScriptRun.characterRun.numberOfCharacters += numberOfAllScriptCharacters; + numberOfAllScriptCharacters = 0u; + } - if( TextAbstraction::LINE_MUST_BREAK == breakInfo ) - { - // The next character is a new paragraph. - firstValidScript = true; - isParagraphRTL = false; + // Add one more character to the run. + ++currentScriptRun.characterRun.numberOfCharacters; } - - // Add one more character to the run. - ++currentScriptRun.characterRun.numberOfCharacters; } // Add remaining characters into the last script. currentScriptRun.characterRun.numberOfCharacters += numberOfAllScriptCharacters; - 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.PushBack( currentScriptRun ); + DALI_ASSERT_DEBUG( ( 0u != currentScriptRun.characterRun.numberOfCharacters ) && "MultilanguageSupport::SetScripts() Trying to insert a script run with zero characters." ); + + if( TextAbstraction::UNKNOWN == currentScriptRun.script ) + { + // There are only white spaces in the last script. Set the latin script. + currentScriptRun.script = TextAbstraction::LATIN; } -} -void MultilanguageSupport::ReplaceScripts( LogicalModel& model, - CharacterIndex characterIndex, - Length numberOfCharactersToRemove, - Length numberOfCharactersToInsert ) -{ + // Store the last run. + scripts.PushBack( currentScriptRun ); } void MultilanguageSupport::ValidateFonts( const Vector& text, const Vector& scripts, Vector& fonts ) { + DALI_LOG_INFO( gLogFilter, Debug::Verbose, "-->MultilanguageSupport::ValidateFonts\n" ); const Length numberOfCharacters = text.Count(); if( 0u == numberOfCharacters ) { + DALI_LOG_INFO( gLogFilter, Debug::Verbose, "<--MultilanguageSupport::ValidateFonts\n" ); // Nothing to do if there are no characters. return; } @@ -417,6 +406,20 @@ void MultilanguageSupport::ValidateFonts( const Vector& text, 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() ); + } +#endif + if( TextAbstraction::UNKNOWN == script ) { DALI_LOG_WARNING( "MultilanguageSupport::ValidateFonts. Unknown script!" ); @@ -426,6 +429,11 @@ void MultilanguageSupport::ValidateFonts( const Vector& text, // Whether the font being validated is a default one not set by the user. const bool isDefault = ( 0u == fontId ); + DALI_LOG_INFO( gLogFilter, + Debug::Verbose, + " Is a default font : %s\n", + ( isDefault ? "true" : "false" ) ); + // The default font point size. PointSize26Dot6 pointSize = TextAbstraction::FontClient::DEFAULT_POINT_SIZE; @@ -440,12 +448,32 @@ void MultilanguageSupport::ValidateFonts( const Vector& text, { // Check in the valid fonts cache. ValidateFontsPerScript* validateFontsPerScript = *( validFontsPerScriptCacheBuffer + script ); + + if( NULL == validateFontsPerScript ) + { + validateFontsPerScript = new ValidateFontsPerScript(); + + *( validFontsPerScriptCacheBuffer + script ) = validateFontsPerScript; + } + if( NULL != validateFontsPerScript ) { if( !validateFontsPerScript->FindValidFont( fontId ) ) { // Use the font client to validate the font. - const GlyphIndex glyphIndex = fontClient.GetGlyphIndex( fontId, character ); + GlyphIndex glyphIndex = fontClient.GetGlyphIndex( fontId, character ); + + // Emojis are present in many monochrome fonts; prefer color by default. + if( TextAbstraction::EMOJI == script && + 0u != glyphIndex ) + { + BufferImage bitmap = fontClient.CreateBitmap( fontId, glyphIndex ); + if( bitmap && + Pixel::BGRA8888 != bitmap.GetPixelFormat() ) + { + glyphIndex = 0; + } + } if( 0u == glyphIndex ) { @@ -458,34 +486,32 @@ void MultilanguageSupport::ValidateFonts( const Vector& text, else { // Add the font to the valid font cache. - validateFontsPerScript->mValidFonts.PushBack( fontId ); - } - } - } - else - { - // Use the font client to validate the font. - const GlyphIndex glyphIndex = fontClient.GetGlyphIndex( fontId, character ); - if( 0u == glyphIndex ) - { - // Get the point size of the current font. It will be used to get a default font id. - pointSize = fontClient.GetPointSize( fontId ); + // At this point the validated font supports the given character. However, characters + // common for all scripts, like white spaces or new paragraph characters, need to be + // processed differently. + // + // i.e. A white space can have assigned a DEVANAGARI script but the font assigned may not + // support none of the DEVANAGARI glyphs. This font can't be added to the cache as a valid + // font for the DEVANAGARI script but the COMMON one. + if( TextAbstraction::IsCommonScript( character ) ) + { + validateFontsPerScript = *( validFontsPerScriptCacheBuffer + TextAbstraction::COMMON ); + + if( NULL == validateFontsPerScript ) + { + validateFontsPerScript = new ValidateFontsPerScript(); + + *( validFontsPerScriptCacheBuffer + TextAbstraction::COMMON ) = validateFontsPerScript; + } + } - // The font is not valid. Set to zero and a default one will be set. - fontId = 0u; - } - else - { - // Add the font to the valid font cache. - validateFontsPerScript = new ValidateFontsPerScript(); - *( validFontsPerScriptCacheBuffer + script ) = validateFontsPerScript; - - validateFontsPerScript->mValidFonts.PushBack( fontId ); + validateFontsPerScript->mValidFonts.PushBack( fontId ); + } } } } - } + } // !isDefault // The font has not been validated. Find a default one. if( 0u == fontId ) @@ -496,14 +522,40 @@ void MultilanguageSupport::ValidateFonts( const Vector& text, // If the cache has not a default font, get one from the font client. if( 0u == fontId ) { + // Emojis are present in many monochrome fonts; prefer color by default. + bool preferColor = ( TextAbstraction::EMOJI == script ); + // Find a default font. - fontId = fontClient.FindDefaultFont( character, pointSize ); + fontId = fontClient.FindDefaultFont( character, pointSize, preferColor ); + + // If the system does not support a suitable font, fallback to Latin + if( 0u == fontId ) + { + fontId = *( defaultFontPerScriptCacheBuffer + TextAbstraction::LATIN ); + } + if( 0u == fontId ) + { + fontId = fontClient.FindDefaultFont( UTF32_A, pointSize ); + } // Cache the font. *( defaultFontPerScriptCacheBuffer + script ) = 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() ); + } +#endif + // The font is now validated. if( ( fontId != currentFontRun.fontId ) || @@ -533,13 +585,7 @@ void MultilanguageSupport::ValidateFonts( const Vector& text, // Store the last run. fonts.PushBack( currentFontRun ); } -} - -void MultilanguageSupport::ValidateFonts( LogicalModel& model, - CharacterIndex characterIndex, - Length numberOfCharactersToRemove, - Length numberOfCharactersToInsert ) -{ + DALI_LOG_INFO( gLogFilter, Debug::Verbose, "<--MultilanguageSupport::ValidateFonts\n" ); } } // namespace Internal