// EXTERNAL INCLUDES
#include <memory.h>
#include <dali/integration-api/debug.h>
-#include <dali/public-api/adaptor-framework/singleton-service.h>
-#include <dali/public-api/text-abstraction/font-client.h>
+#include <dali/devel-api/adaptor-framework/singleton-service.h>
+#include <dali/devel-api/text-abstraction/font-client.h>
+#include <dali/devel-api/text-abstraction/script.h>
// INTERNAL INCLUDES
-#include <dali-toolkit/internal/text/logical-model.h>
+#include <dali-toolkit/internal/text/logical-model-impl.h>
#include <dali-toolkit/internal/text/font-run.h>
-#include <dali-toolkit/internal/text/script.h>
#include <dali-toolkit/internal/text/script-run.h>
+#include <dali-toolkit/internal/text/text-io.h>
namespace Dali
{
#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
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<FontId>::ConstIterator it = mValidFonts.Begin(),
// Skip those characters valid for many scripts like white spaces or '\n'.
bool endOfText = index == numberOfCharacters;
while( !endOfText &&
- IsValidForAllScripts( character ) )
+ TextAbstraction::IsCommonScript( character ) )
{
// Count all these characters to be added into a script.
++numberOfAllScriptCharacters;
}
// Get the script of the character.
- Script script = GetCharacterScript( character );
+ Script script = TextAbstraction::GetCharacterScript( character );
// Check if it is the first character of a paragraph.
if( firstValidScript &&
( TextAbstraction::UNKNOWN != script ) )
{
// Sets the direction of the first valid script.
- isParagraphRTL = ( TextAbstraction::ARABIC == script );
+ isParagraphRTL = TextAbstraction::IsRightToLeftScript( script );
firstValidScript = false;
}
{
// Current run needs to be stored and a new one initialized.
- if( isParagraphRTL != ( TextAbstraction::ARABIC == script ) )
+ if( isParagraphRTL != TextAbstraction::IsRightToLeftScript( script ) )
{
// Current script has different 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.
const Vector<ScriptRun>& scripts,
Vector<FontRun>& 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;
}
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!" );
// 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;
{
// 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 )
{
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 );
-
- // 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;
+ // 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;
+ }
+ }
- validateFontsPerScript->mValidFonts.PushBack( fontId );
+ validateFontsPerScript->mValidFonts.PushBack( fontId );
+ }
}
}
}
- }
+ } // !isDefault
// The font has not been validated. Find a default one.
if( 0u == fontId )
// 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 );
+ }
-#ifdef DEBUG_ENABLED
- Dali::TextAbstraction::FontDescription description;
- fontClient.GetDescription( fontId, description );
- DALI_LOG_INFO( gLogFilter, Debug::Concise, "Script: %s; Selected font: %s\n", Dali::TextAbstraction::ScriptName[script], description.path.c_str() );
-#endif
// 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 ) ||
// Store the last run.
fonts.PushBack( currentFontRun );
}
+ DALI_LOG_INFO( gLogFilter, Debug::Verbose, "<--MultilanguageSupport::ValidateFonts\n" );
}
void MultilanguageSupport::ValidateFonts( LogicalModel& model,