#include <dali/integration-api/debug.h>
// INTERNAL INCLUDES
+#include <dali-toolkit/internal/text/emoji-helper.h>
#include <dali-toolkit/internal/text/multi-language-helper-functions.h>
namespace Dali
{
// 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 + 1, NULL);
+ mDefaultFontPerScriptCache.Resize(TextAbstraction::GetNumberOfScripts(), 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 + 1, NULL);
+ mValidFontsPerScriptCache.Resize(TextAbstraction::GetNumberOfScripts(), NULL);
}
MultilanguageSupport::~MultilanguageSupport()
// Traverse all characters and set the scripts.
const Length lastCharacter = startIndex + numberOfCharacters;
+
for(Length index = startIndex; index < lastCharacter; ++index)
{
Character character = *(textBuffer + index);
// Skip those characters valid for many scripts like white spaces or '\n'.
bool endOfText = index == lastCharacter;
+
+ //Handle all Emoji Sequence cases
+ if(IsNewSequence(textBuffer, currentScriptRun.script, index, lastCharacter, script))
+ {
+ AddCurrentScriptAndCreatNewScript(script,
+ false,
+ false,
+ currentScriptRun,
+ numberOfAllScriptCharacters,
+ scripts,
+ scriptIndex);
+ }
+ else if(IsScriptChangedToFollowSequence(currentScriptRun.script, character, script))
+ {
+ currentScriptRun.script = script;
+ }
+ else if(IsOneOfEmojiScripts(currentScriptRun.script) && (TextAbstraction::COMMON == script))
+ {
+ // Emojis doesn't mix well with characters common to all scripts. Insert the emoji run.
+ AddCurrentScriptAndCreatNewScript(TextAbstraction::UNKNOWN,
+ false,
+ false,
+ currentScriptRun,
+ numberOfAllScriptCharacters,
+ scripts,
+ scriptIndex);
+ }
+
while(!endOfText &&
(TextAbstraction::COMMON == 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);
- ++scriptIndex;
-
- // Initialize the new one.
- currentScriptRun.characterRun.characterIndex = currentScriptRun.characterRun.characterIndex + currentScriptRun.characterRun.numberOfCharacters;
- currentScriptRun.characterRun.numberOfCharacters = 0u;
- currentScriptRun.script = TextAbstraction::UNKNOWN;
- numberOfAllScriptCharacters = 0u;
- }
-
// Count all these characters to be added into a script.
++numberOfAllScriptCharacters;
// the same direction than the first script of the paragraph.
isFirstScriptToBeSet = true;
- // Characters common to all scripts at the end of the paragraph are added to the last script.
- currentScriptRun.characterRun.numberOfCharacters += numberOfAllScriptCharacters;
-
- // Store the script run.
- scripts.Insert(scripts.Begin() + scriptIndex, currentScriptRun);
- ++scriptIndex;
-
- // Initialize the new one.
- currentScriptRun.characterRun.characterIndex = currentScriptRun.characterRun.characterIndex + currentScriptRun.characterRun.numberOfCharacters;
- currentScriptRun.characterRun.numberOfCharacters = 0u;
- currentScriptRun.script = TextAbstraction::UNKNOWN;
- numberOfAllScriptCharacters = 0u;
- // Initialize whether is right to left direction
- currentScriptRun.isRightToLeft = false;
+ AddCurrentScriptAndCreatNewScript(TextAbstraction::UNKNOWN,
+ false,
+ false,
+ currentScriptRun,
+ numberOfAllScriptCharacters,
+ scripts,
+ scriptIndex);
}
// Get the next character.
{
character = *(textBuffer + index);
script = TextAbstraction::GetCharacterScript(character);
+
+ //Handle all Emoji Sequence cases
+ if(IsNewSequence(textBuffer, currentScriptRun.script, index, lastCharacter, script))
+ {
+ AddCurrentScriptAndCreatNewScript(script,
+ false,
+ false,
+ currentScriptRun,
+ numberOfAllScriptCharacters,
+ scripts,
+ scriptIndex);
+ }
+ else if(IsScriptChangedToFollowSequence(currentScriptRun.script, character, script))
+ {
+ currentScriptRun.script = script;
+ }
}
} // end while( !endOfText && ( TextAbstraction::COMMON == script ) )
if(isFirstScriptToBeSet &&
(TextAbstraction::UNKNOWN != script) &&
(TextAbstraction::COMMON != script) &&
- (TextAbstraction::EMOJI != script))
+ (TextAbstraction::EMOJI != script) &&
+ (TextAbstraction::EMOJI_TEXT != script) &&
+ (TextAbstraction::EMOJI_COLOR != script) &&
+ (!TextAbstraction::IsSymbolScript(script)))
{
// Sets the direction of the first valid script.
isParagraphRTL = currentScriptRun.isRightToLeft || TextAbstraction::IsRightToLeftScript(script);
numberOfAllScriptCharacters = 0u;
}
else if((TextAbstraction::UNKNOWN == currentScriptRun.script) &&
- (TextAbstraction::EMOJI == script))
+ (TextAbstraction::IsSymbolOrEmojiOrTextScript(script)))
{
currentScriptRun.characterRun.numberOfCharacters += numberOfAllScriptCharacters;
numberOfAllScriptCharacters = 0u;
}
- if(0u != currentScriptRun.characterRun.numberOfCharacters)
- {
- // Store the script run.
- scripts.Insert(scripts.Begin() + scriptIndex, currentScriptRun);
- ++scriptIndex;
- }
-
- // Initialize the new one.
- 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;
- // Check if whether is right to left script.
- currentScriptRun.isRightToLeft = TextAbstraction::IsRightToLeftScript(currentScriptRun.script);
+ // Adds the white spaces which are at the begining of the script.
+ numberOfAllScriptCharacters++;
+ AddCurrentScriptAndCreatNewScript(script,
+ TextAbstraction::IsRightToLeftScript(script),
+ true,
+ currentScriptRun,
+ numberOfAllScriptCharacters,
+ scripts,
+ scriptIndex);
}
else
{
Vector<ScriptRun>::ConstIterator scriptRunEndIt = scripts.End();
bool isNewParagraphCharacter = false;
- bool isPreviousEmojiScript = false;
- FontId previousEmojiFontId = 0u;
+ FontId previousEmojiFontId = 0u;
+ TextAbstraction::Script previousScript = TextAbstraction::UNKNOWN;
CharacterIndex lastCharacter = startIndex + numberOfCharacters;
for(Length index = startIndex; index < lastCharacter; ++index)
}
bool isCommonScript = false;
- bool isEmojiScript = TextAbstraction::EMOJI == script;
-
- if(isEmojiScript && !isPreviousEmojiScript)
- {
- if(0u != currentFontRun.characterRun.numberOfCharacters)
- {
- // Store the font run.
- fonts.Insert(fonts.Begin() + fontIndex, currentFontRun);
- ++fontIndex;
- }
-
- // Initialize the new one.
- currentFontRun.characterRun.characterIndex = currentFontRun.characterRun.characterIndex + currentFontRun.characterRun.numberOfCharacters;
- currentFontRun.characterRun.numberOfCharacters = 0u;
- currentFontRun.fontId = fontId;
- currentFontRun.isItalicRequired = false;
- currentFontRun.isBoldRequired = false;
- }
+ bool isEmojiScript = TextAbstraction::IsEmojiScript(script) || TextAbstraction::IsEmojiColorScript(script) || TextAbstraction::IsEmojiTextScript(script);
- // ZWJ, ZWNJ between emojis should use the previous emoji font.
- if(isEmojiScript && (TextAbstraction::IsZeroWidthJoiner(character) || TextAbstraction::IsZeroWidthNonJoiner(character)))
+ if(isEmojiScript && (previousScript == script))
{
+ // Emoji sequence should use the previous emoji font.
if(0u != previousEmojiFontId)
{
fontId = previousEmojiFontId;
//
// 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) || TextAbstraction::IsEmojiPresentationSelector(character);
// Check in the valid fonts cache.
ValidateFontsPerScript* validateFontsPerScript = *(validFontsPerScriptCacheBuffer + script);
} // !isValidFont (2)
} // !isValidFont (1)
+ if(isEmojiScript && (previousScript != script))
+ {
+ //New Emoji sequence should select font according to the variation selector (VS15 or VS16).
+ if(0u != currentFontRun.characterRun.numberOfCharacters)
+ {
+ // Store the font run.
+ fonts.Insert(fonts.Begin() + fontIndex, currentFontRun);
+ ++fontIndex;
+ }
+
+ // Initialize the new one.
+ currentFontRun.characterRun.characterIndex = currentFontRun.characterRun.characterIndex + currentFontRun.characterRun.numberOfCharacters;
+ currentFontRun.characterRun.numberOfCharacters = 0u;
+ currentFontRun.fontId = fontId;
+ currentFontRun.isItalicRequired = false;
+ currentFontRun.isBoldRequired = false;
+
+ if(TextAbstraction::IsEmojiColorScript(script) || TextAbstraction::IsEmojiTextScript(script))
+ {
+ bool isModifiedByVariationSelector = false;
+ GlyphIndex glyphIndexChar = fontClient.GetGlyphIndex(fontId, character);
+ GlyphIndex glyphIndexCharByVS = fontClient.GetGlyphIndex(fontId, character, Text::GetVariationSelectorByScript(script));
+
+ isModifiedByVariationSelector = glyphIndexChar != glyphIndexCharByVS;
+
+ if(isModifiedByVariationSelector)
+ {
+ FontId requestedFontId = fontClient.FindDefaultFont(character, currentFontPointSize, IsEmojiColorScript(script));
+ if(0u != requestedFontId)
+ {
+ currentFontRun.fontId = fontId = requestedFontId;
+ isValidFont = true;
+ }
+ }
+ }
+ }
+
// Store the font id when the first character is an emoji.
- if(isEmojiScript && !isPreviousEmojiScript)
+ if(isEmojiScript)
{
- if(0u != fontId)
+ if(0u != fontId && previousScript != script)
{
previousEmojiFontId = fontId;
}
}
+ else
+ {
+ previousEmojiFontId = 0u;
+ }
#ifdef DEBUG_ENABLED
{
// Whether the current character is a new paragraph character.
isNewParagraphCharacter = TextAbstraction::IsNewParagraph(character);
- isPreviousEmojiScript = isEmojiScript;
+ previousScript = script;
} // end traverse characters.
if(0u != currentFontRun.characterRun.numberOfCharacters)
DALI_LOG_INFO(gLogFilter, Debug::General, "<--MultilanguageSupport::ValidateFonts\n");
}
+void MultilanguageSupport::AddCurrentScriptAndCreatNewScript(const Script requestedScript,
+ const bool isRightToLeft,
+ const bool addScriptCharactersToNewScript,
+ ScriptRun& currentScriptRun,
+ Length& numberOfAllScriptCharacters,
+ Vector<ScriptRun>& scripts,
+ ScriptRunIndex& scriptIndex)
+{
+ // Add the pending characters to the current script
+ currentScriptRun.characterRun.numberOfCharacters += (addScriptCharactersToNewScript ? 0u : numberOfAllScriptCharacters);
+
+ // In-case the current script is empty then no need to add it for scripts
+ if(0u != currentScriptRun.characterRun.numberOfCharacters)
+ {
+ // Store the script run.
+ scripts.Insert(scripts.Begin() + scriptIndex, currentScriptRun);
+ ++scriptIndex;
+ }
+
+ // Initialize the new one by the requested script
+ currentScriptRun.characterRun.characterIndex = currentScriptRun.characterRun.characterIndex + currentScriptRun.characterRun.numberOfCharacters;
+ currentScriptRun.characterRun.numberOfCharacters = (addScriptCharactersToNewScript ? numberOfAllScriptCharacters : 0u);
+ currentScriptRun.script = requestedScript;
+ numberOfAllScriptCharacters = 0u;
+ // Initialize whether is right to left direction
+ currentScriptRun.isRightToLeft = isRightToLeft;
+}
+
} // namespace Internal
} // namespace Text
projects / platform / core / uifw / dali-toolkit.git / blobdiff