[dali_2.3.22] Merge branch 'devel/master'

[platform/core/uifw/dali-toolkit.git] / dali-toolkit / internal / text / multi-language-support-impl.cpp

diff --git a/dali-toolkit/internal/text/multi-language-support-impl.cpp b/dali-toolkit/internal/text/multi-language-support-impl.cpp
index 5a5c0d8..41ba5ac 100644 (file)
--- a/dali-toolkit/internal/text/multi-language-support-impl.cpp
+++ b/dali-toolkit/internal/text/multi-language-support-impl.cpp
@@ -21,6 +21,7 @@
 // EXTERNAL INCLUDES
 #include <dali/devel-api/common/singleton-service.h>
 #include <dali/devel-api/text-abstraction/font-client.h>
+#include <dali/integration-api/adaptor-framework/adaptor.h>
 #include <dali/integration-api/debug.h>
 #include <dali/integration-api/trace.h>
 
@@ -256,7 +257,8 @@ void DefaultFonts::Cache(const TextAbstraction::FontDescription& description, Fo
 
 MultilanguageSupport::MultilanguageSupport()
 : mDefaultFontPerScriptCache(),
-  mValidFontsPerScriptCache()
+  mValidFontsPerScriptCache(),
+  mLocale(std::string())
 {
   // 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.
@@ -265,6 +267,11 @@ MultilanguageSupport::MultilanguageSupport()
   // 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::GetNumberOfScripts(), NULL);
+
+  if(Dali::Adaptor::IsAvailable())
+  {
+    Dali::Adaptor::Get().LocaleChangedSignal().Connect(this, &MultilanguageSupport::OnLocaleChanged);
+  }
 }
 
 MultilanguageSupport::~MultilanguageSupport()
@@ -288,6 +295,29 @@ MultilanguageSupport::~MultilanguageSupport()
   }
 }
 
+void MultilanguageSupport::OnLocaleChanged(std::string locale)
+{
+  if(mLocale != locale)
+  {
+    mLocale = locale;
+    ClearCache();
+  }
+}
+
+void MultilanguageSupport::ClearCache()
+{
+  mDefaultFontPerScriptCache.Clear();
+  mValidFontsPerScriptCache.Clear();
+
+  mDefaultFontPerScriptCache.Resize(TextAbstraction::GetNumberOfScripts(), NULL);
+  mValidFontsPerScriptCache.Resize(TextAbstraction::GetNumberOfScripts(), NULL);
+}
+
+std::string MultilanguageSupport::GetLocale()
+{
+  return mLocale;
+}
+
 Text::MultilanguageSupport MultilanguageSupport::Get()
 {
   Text::MultilanguageSupport multilanguageSupportHandle;
@@ -633,7 +663,6 @@ void MultilanguageSupport::ValidateFonts(const Vector<Character>&
   Vector<ScriptRun>::ConstIterator scriptRunEndIt          = scripts.End();
   bool                             isNewParagraphCharacter = false;
 
-  FontId                  previousEmojiFontId = 0u;
   FontId                  currentFontId       = 0u;
   FontId                  previousFontId      = 0u;
   TextAbstraction::Script previousScript      = TextAbstraction::UNKNOWN;
@@ -710,15 +739,16 @@ void MultilanguageSupport::ValidateFonts(const Vector<Character>&
       isValidFont = fontClient.IsCharacterSupportedByFont(fontId, character);
     }
 
-    bool isCommonScript = false;
-    bool isEmojiScript  = TextAbstraction::IsOneOfEmojiScripts(script);
+    bool isEmojiScript = IsEmojiColorScript(script) || IsEmojiTextScript(script);
+    bool isZWJ         = TextAbstraction::IsZeroWidthJoiner(character);
 
-    if(isEmojiScript && (previousScript == script))
+    if((previousScript == script) &&
+       (isEmojiScript || isZWJ))
     {
-      // Emoji sequence should use the previous emoji font.
-      if(0u != previousEmojiFontId)
+      // This sequence should use the previous font.
+      if(0u != previousFontId)
       {
-        fontId      = previousEmojiFontId;
+        fontId      = previousFontId;
         isValidFont = true;
       }
     }
@@ -732,6 +762,9 @@ void MultilanguageSupport::ValidateFonts(const Vector<Character>&
       isValidFont = true;
     }
 
+    // This is valid after CheckFontSupportsCharacter();
+    bool isCommonScript = false;
+
     // If the given font is not valid, it means either:
     // - there is no cached font for the current script yet or,
     // - the user has set a different font than the default one for the current script or,
@@ -778,19 +811,6 @@ void MultilanguageSupport::ValidateFonts(const Vector<Character>&
       }
     }
 
-    // Store the font id when the first character is an emoji.
-    if(isEmojiScript)
-    {
-      if(0u != fontId && previousScript != script)
-      {
-        previousEmojiFontId = fontId;
-      }
-    }
-    else
-    {
-      previousEmojiFontId = 0u;
-    }
-
 #ifdef DEBUG_ENABLED
     if(gLogFilter->IsEnabledFor(Debug::Verbose))
     {
@@ -849,6 +869,7 @@ void MultilanguageSupport::ValidateFonts(const Vector<Character>&
     // Whether the current character is a new paragraph character.
     isNewParagraphCharacter = TextAbstraction::IsNewParagraph(character);
     previousScript          = script;
+    currentFontId           = fontId;
     previousFontId          = currentFontId;
   } // end traverse characters.